How to Display the Temperature on the LCD Screen

Step 1:LCD wiring

How to Display the Temperature on the LCD Screen 1

Here are some instructions for LCD wiring: in this case, pins 7 to 10 are not used. Pins 11 to 14 are used to send characters to the display. Pin 14 is the power supply of LED backlight, which needs to be connected in series to 5V through a 220 ohm resistor. Pin 16 is the ground wire of the LED backlight and needs to be connected to the ground wire of Arduino. Pin 1 (VSS) needs to be grounded. Pin 2 needs to be connected to 5V. Both pins 1 and 2 supply power to the LCD display. Pin 3 needs to be connected to the middle connector of the potentiometer and used to control the contrast of the display. Pin 4 is the register selection connector, which is used to control the display position of characters on the display screen. This pin is connected to pin 12 of Arduino UNO. Pin 5 is the read / write pin, and since we will use the display to display things, we will write to the display. To use write mode, we need to ground pin 5. Pin 6 is the enable pin that tells the display that it will receive commands. This is the 11 pin connection to Arduino UNO.

Wiring tmp36 temperature sensorThe sensor has 3 pins. When facing the flat side of the sensor, this is the pin layout:Left pin: 5V

Intermediate pin: analog output (0-5V)Right pin: GNDDo not switch left and right pins!

Step 2: Step 2: write codeThe code is not difficult to understand. The key to the code is that the value of the sensor changes every time you cycle through it and write it to the display. To avoid this, I read sensorvalue once a second and store it in an array. After 30 seconds, I'm averaging these values and writing them to the display. The value will still be different, but much more stable.

GET IN TOUCH WITH Us
recommended articles
FAQ
If the LCD Screen Encounters Flower Screen Failure, How Should We Deal with It
If the LCD Screen Encounters Flower Screen Failure, How Should We Deal with It
LCD screen may encounter flower screen failure during use. The flower screen failure of industrial LCD screen may have an image, but the image is covered with dot, sheet, mosaic and other interference.If we encounter LCD flower screen, what aspects should we check? Generally, LCD flower screen can be processed from the aspects of checking signal source, logic board, LVDS signal, motherboard, screen parameter, LCD screen, etc. The specific process is as follows:1. The problem of industrial LCD screen cable arrangement is whether the cable connecting the screen and the main board is burned or loose. The interface should be plugged tightly to avoid short circuit or poor contact. In this case, just change the cable arrangement.2. Use a multimeter to check whether the power supply of the LCD is grounded. This may also be the reason for the screen flower. If there is a problem, just ground the power supply.3. If the LCD motherboard is broken, you can replace it with a new motherboard, but this probability is relatively small, but it is not ruled out. You can replace the motherboard and have a try.4. If the failure phenomenon of industrial LCD flower screen is irregular flower screen, the image in the middle of the flower screen is mixed with many small color dots. Corresponding maintenance idea: the LVDS patch cord is in poor contact.5. If the fault phenomenon of industrial LCD flower screen is that the stripes and colors of flowers change after repeated power on. Check logic board6. If the fault phenomenon of flower screen of industrial LCD is that the stripes and colors of flowers do not change after repeated power on. Corresponding maintenance idea: it is likely that the screen itself is broken.7. If there is interference in the image, there is also interference in the characters. Corresponding ideas: logic board, screen signal wiring, digital board signal output circuit.8. If the character is normal, the image has block and dot interference. YPbPr input signal, no interference. Then input from the AV port, and the image is disturbed. Corresponding maintenance ideas: false soldering of frame memory, broken control signal line of image enhancement processing IC.9. Industrial LCD screen flower screen fault phenomenon, if the images are all flower dots, finely broken flower screen, the characters are normal. Corresponding maintenance idea: the fault is in the video decoder circuit. Because the fault generated by the image enhancement processing circuit is massive, not fragmented.The above are the reasons why the LCD screen may flower. If the problem is still not found after troubleshooting, you can contact the LCD screen supplier and motherboard manufacturer to ask their professional technicians to troubleshoot the problem.fqj
Will the LCD Screen Be Equipped with Off-screen Fingerprint Identification Technology?
Will the LCD Screen Be Equipped with Off-screen Fingerprint Identification Technology?
Payment app fingerprint security authentication, joint account withdrawal encryption fingerprint authentication... Many fingerprint identification behaviors are expected to be realized in a way of higher security and convenience through under LCD screen (internal) fingerprint identification technology.Due to the opaque characteristics of LCD screen, it is difficult to realize this technology. Nevertheless, many panel and mobile phone manufacturers have challenged LCD off screen fingerprint technology, which is evolving towards high integration, full screen fingerprint multipoint identification and high screen share.Evolution from "off screen" to "on screen"At present, the off-screen fingerprint identification technology applied to OLED mobile phones has been very mature. Due to the high cost, the selling price of mobile phones is generally high. Although the cost of LCD screen is low, the LCD screen itself cannot transmit light, so it is difficult to realize the fingerprint technology under the LCD screen. Nevertheless, in recent years, many panel and mobile phone manufacturers have challenged the fingerprint technology under the LCD screen and achieved certain results.In May 2019, AU Optronics displayed a full screen optical fingerprint identification LCD screen.In June 2019, BOE revealed that the optical fingerprint sensing technology under LCD screen has been successfully developed. In August 2019, Huawei glory demonstrated the LCD mobile phone prototype equipped with off-screen fingerprint unlocking. It is reported that this prototype is the result of joint development between glory and BOE.In March 2020, Lu Weibing, vice president of Xiaomi group and general manager of Hongmi brand, announced that Hongmi team had overcome the problem of screen fingerprint, realized screen fingerprint on LCD screen and had mass production.In June 2020, TCL Huaxing announced that it had developed fixed single point on-screen fingerprint technology. It is expected to launch full screen single point on-screen fingerprint technology this year and Full Screen multi-point on-screen fingerprint technology in 2021.In July 2020, the world's first LCD on-screen multi-point fingerprint solution (Ted finger print) developed by Tianma was officially released. The scheme embeds the fingerprint image collector in the TFT display substrate, realizing the integration of touch, display and fingerprint identification.What is the evolution process from "off screen" to "on screen"?It is understood that the development of off screen fingerprint is mainly divided into off screen fingerprint (fixed single point), on-screen fingerprint (full screen single point), on-screen fingerprint (Full Screen multi-point Ted embedded), etc. Off screen fingerprint identification includes capacitive, optical and ultrasonic types. However, due to technology and cost, most of the products equipped with this technology can only realize single point fingerprint identification in a fixed area. Now, the latest R & D achievement - on-screen multi-point fingerprint solution adopts the optical fingerprint identification mode, integrates the fingerprint image collector into the display screen, and can realize "Full Screen multi-point" fingerprint identification on the full screen, which has a larger screen identification area than off screen fingerprint products.Integration and multipoint recognition become the direction of attack"The future development direction of on-screen multi-point fingerprint solution must be high integration, full screen fingerprint multi-point identification and high screen proportion." Wu Zhen, director of marketing department of Tianma Microelectronics Co., Ltd., said in an interview with China Electronics News.Specifically, the first is high integration. It is mainly to realize the three in one of touch, display and fingerprint identification. It is necessary to break through the limitation that the optical fingerprint in the LCD screen is difficult to match the thickness of the normal cover plate, so as to have more market competitiveness and mass production; At the same time, because the optical path modulation unit is integrated in the display screen, the thickness of the display screen is reduced by more than 50% compared with the external collimating optical path design scheme, making the design of terminal products lighter and thinner. The second is full screen fingerprint multipoint identification. To support full Screen multi-point fingerprint identification in any display area, it can be applied to full screen blind unlocking, APP encryption unlocking and user-defined fingerprint control to achieve high security and high privacy. The third is the proportion of high screen. The fingerprint identification function is built into the display screen to effectively improve the screen proportion of terminal products and bring users a more ultimate visual experience.In addition, the development and improvement of fingerprint under (in) LCD screen is inseparable from the dimensions of high brightness, high fingerprint recognition rate and improvement of unlocking experience. High brightness requires the brightness of the module to be more than 450 nits. To ensure that more image details are displayed, it can effectively solve the problem of serious brightness loss and bring a smooth viewing and game experience; The ultra-high fingerprint recognition rate refers to the FRR of 3%, which can reach the OLED level; in terms of unlocking experience, the use of unlocking or consumption functions is more intuitive, avoiding accidental touch, simplifying the buttons of mobile phone accessories and improving the overall beauty.It is understood that in the process of tackling the key problems of LCD off screen fingerprint technology, TCL Huaxing has solved the problems such as the development of Blu films, the improvement of TPM brightness and the improvement of infrared sensor recognition accuracy through continuous transformation and attempt of LCD backlight. Finally, TCL Huaxing has launched the LCD panel off screen fingerprint that can clearly see the fingerprint image, and realized the rapid identification function of LCD off screen fingerprint.Optimize cost and find the way of differentiated competitionThe advantage of fingerprint in LCD screen is that it can do large-area and multi fingerprint identification, and can improve the diversified space of human-computer interaction experience of intelligent terminal. For example, it can deeply encrypt app, ensure wealth security and improve vehicle driving experience; it can also provide higher-level guarantee for the information security of smart factory, smart city, smart home, smart transportation and intelligent medical treatment.According to Wu Zhen, in the future, the fingerprint on the LCD screen can encrypt any app. When users click the app icon, they need to complete fingerprint verification before they can further open and run the app. Compared with the encryption method that the existing mobile phone app needs to press the finger at the specified position for fingerprint verification, it is more convenient. The fingerprint on the LCD screen can even realize that when using a joint account on the ATM, two people need to use it at the same time The operation function of transfer can only be realized by inputting fingerprint.Since the release of full screen optical fingerprint identification LCD screen by Youda optoelectronics, Tianma's latest LCD multi touch in screen fingerprint scheme has met the conditions for mass production, and is sending samples to terminals of world-famous brands. The off screen (in) fingerprint scheme has been launched for a long time, but it has not been commercialized on a large scale. What step has the overall off screen fingerprint taken in the process of mass production application?Liu Yushi, senior analyst of cinno research, said in an interview that the under screen (inner) fingerprint of LCD has been opened up technically. Compared with the rigid OLED with optical under screen fingerprint, it has no advantage in mass production cost, so there is little practical application at present. At present, the under screen (inner) fingerprint of LCD is actively optimizing the cost and looking for a way to compete with the off screen fingerprint of OLED.Xu Jingjing, senior analyst of semiconductor device research at sigaintell, said in an interview with China Electronics News that the fingerprint scheme under the LCD screen (inside) is still in the research and development stage. From the perspective of application field, compared with mobile phone terminals, it is expected to be promoted in the vehicle display and door lock Market in the future, and mass production is expected to be realized in the second half of 2021.One of the evolution trends of touch display is to help the touch display module continuously add value by adding more functions from the device structure level. Although the latest LCD on-screen fingerprint solution still has some details to be optimized, the release of this technology has revived the confidence of practitioners in LCD fingerprint solution.
Will the LCD Screen Be Equipped with Off-screen Fingerprint Identification Technology?
Will the LCD Screen Be Equipped with Off-screen Fingerprint Identification Technology?
Payment app fingerprint security authentication, joint account withdrawal encryption fingerprint authentication... Many fingerprint identification behaviors are expected to be realized in a way of higher security and convenience through under LCD screen (internal) fingerprint identification technology.Due to the opaque characteristics of LCD screen, it is difficult to realize this technology. Nevertheless, many panel and mobile phone manufacturers have challenged LCD off screen fingerprint technology, which is evolving towards high integration, full screen fingerprint multipoint identification and high screen share.Evolution from "off screen" to "on screen"At present, the off-screen fingerprint identification technology applied to OLED mobile phones has been very mature. Due to the high cost, the selling price of mobile phones is generally high. Although the cost of LCD screen is low, the LCD screen itself cannot transmit light, so it is difficult to realize the fingerprint technology under the LCD screen. Nevertheless, in recent years, many panel and mobile phone manufacturers have challenged the fingerprint technology under the LCD screen and achieved certain results.In May 2019, AU Optronics displayed a full screen optical fingerprint identification LCD screen.In June 2019, BOE revealed that the optical fingerprint sensing technology under LCD screen has been successfully developed. In August 2019, Huawei glory demonstrated the LCD mobile phone prototype equipped with off-screen fingerprint unlocking. It is reported that this prototype is the result of joint development between glory and BOE.In March 2020, Lu Weibing, vice president of Xiaomi group and general manager of Hongmi brand, announced that Hongmi team had overcome the problem of screen fingerprint, realized screen fingerprint on LCD screen and had mass production.In June 2020, TCL Huaxing announced that it had developed fixed single point on-screen fingerprint technology. It is expected to launch full screen single point on-screen fingerprint technology this year and Full Screen multi-point on-screen fingerprint technology in 2021.In July 2020, the world's first LCD on-screen multi-point fingerprint solution (Ted finger print) developed by Tianma was officially released. The scheme embeds the fingerprint image collector in the TFT display substrate, realizing the integration of touch, display and fingerprint identification.What is the evolution process from "off screen" to "on screen"?It is understood that the development of off screen fingerprint is mainly divided into off screen fingerprint (fixed single point), on-screen fingerprint (full screen single point), on-screen fingerprint (Full Screen multi-point Ted embedded), etc. Off screen fingerprint identification includes capacitive, optical and ultrasonic types. However, due to technology and cost, most of the products equipped with this technology can only realize single point fingerprint identification in a fixed area. Now, the latest R & D achievement - on-screen multi-point fingerprint solution adopts the optical fingerprint identification mode, integrates the fingerprint image collector into the display screen, and can realize "Full Screen multi-point" fingerprint identification on the full screen, which has a larger screen identification area than off screen fingerprint products.Integration and multipoint recognition become the direction of attack"The future development direction of on-screen multi-point fingerprint solution must be high integration, full screen fingerprint multi-point identification and high screen proportion." Wu Zhen, director of marketing department of Tianma Microelectronics Co., Ltd., said in an interview with China Electronics News.Specifically, the first is high integration. It is mainly to realize the three in one of touch, display and fingerprint identification. It is necessary to break through the limitation that the optical fingerprint in the LCD screen is difficult to match the thickness of the normal cover plate, so as to have more market competitiveness and mass production; At the same time, because the optical path modulation unit is integrated in the display screen, the thickness of the display screen is reduced by more than 50% compared with the external collimating optical path design scheme, making the design of terminal products lighter and thinner. The second is full screen fingerprint multipoint identification. To support full Screen multi-point fingerprint identification in any display area, it can be applied to full screen blind unlocking, APP encryption unlocking and user-defined fingerprint control to achieve high security and high privacy. The third is the proportion of high screen. The fingerprint identification function is built into the display screen to effectively improve the screen proportion of terminal products and bring users a more ultimate visual experience.In addition, the development and improvement of fingerprint under (in) LCD screen is inseparable from the dimensions of high brightness, high fingerprint recognition rate and improvement of unlocking experience. High brightness requires the brightness of the module to be more than 450 nits. To ensure that more image details are displayed, it can effectively solve the problem of serious brightness loss and bring a smooth viewing and game experience; The ultra-high fingerprint recognition rate refers to the FRR of 3%, which can reach the OLED level; in terms of unlocking experience, the use of unlocking or consumption functions is more intuitive, avoiding accidental touch, simplifying the buttons of mobile phone accessories and improving the overall beauty.It is understood that in the process of tackling the key problems of LCD off screen fingerprint technology, TCL Huaxing has solved the problems such as the development of Blu films, the improvement of TPM brightness and the improvement of infrared sensor recognition accuracy through continuous transformation and attempt of LCD backlight. Finally, TCL Huaxing has launched the LCD panel off screen fingerprint that can clearly see the fingerprint image, and realized the rapid identification function of LCD off screen fingerprint.Optimize cost and find the way of differentiated competitionThe advantage of fingerprint in LCD screen is that it can do large-area and multi fingerprint identification, and can improve the diversified space of human-computer interaction experience of intelligent terminal. For example, it can deeply encrypt app, ensure wealth security and improve vehicle driving experience; it can also provide higher-level guarantee for the information security of smart factory, smart city, smart home, smart transportation and intelligent medical treatment.According to Wu Zhen, in the future, the fingerprint on the LCD screen can encrypt any app. When users click the app icon, they need to complete fingerprint verification before they can further open and run the app. Compared with the encryption method that the existing mobile phone app needs to press the finger at the specified position for fingerprint verification, it is more convenient. The fingerprint on the LCD screen can even realize that when using a joint account on the ATM, two people need to use it at the same time The operation function of transfer can only be realized by inputting fingerprint.Since the release of full screen optical fingerprint identification LCD screen by Youda optoelectronics, Tianma's latest LCD multi touch in screen fingerprint scheme has met the conditions for mass production, and is sending samples to terminals of world-famous brands. The off screen (in) fingerprint scheme has been launched for a long time, but it has not been commercialized on a large scale. What step has the overall off screen fingerprint taken in the process of mass production application?Liu Yushi, senior analyst of cinno research, said in an interview that the under screen (inner) fingerprint of LCD has been opened up technically. Compared with the rigid OLED with optical under screen fingerprint, it has no advantage in mass production cost, so there is little practical application at present. At present, the under screen (inner) fingerprint of LCD is actively optimizing the cost and looking for a way to compete with the off screen fingerprint of OLED.Xu Jingjing, senior analyst of semiconductor device research at sigaintell, said in an interview with China Electronics News that the fingerprint scheme under the LCD screen (inside) is still in the research and development stage. From the perspective of application field, compared with mobile phone terminals, it is expected to be promoted in the vehicle display and door lock Market in the future, and mass production is expected to be realized in the second half of 2021.One of the evolution trends of touch display is to help the touch display module continuously add value by adding more functions from the device structure level. Although the latest LCD on-screen fingerprint solution still has some details to be optimized, the release of this technology has revived the confidence of practitioners in LCD fingerprint solution.
Will the LCD Screen Be Equipped with Off-screen Fingerprint Identification Technology?
Will the LCD Screen Be Equipped with Off-screen Fingerprint Identification Technology?
Payment app fingerprint security authentication, joint account withdrawal encryption fingerprint authentication... Many fingerprint identification behaviors are expected to be realized in a way of higher security and convenience through under LCD screen (internal) fingerprint identification technology.Due to the opaque characteristics of LCD screen, it is difficult to realize this technology. Nevertheless, many panel and mobile phone manufacturers have challenged LCD off screen fingerprint technology, which is evolving towards high integration, full screen fingerprint multipoint identification and high screen share.Evolution from "off screen" to "on screen"At present, the off-screen fingerprint identification technology applied to OLED mobile phones has been very mature. Due to the high cost, the selling price of mobile phones is generally high. Although the cost of LCD screen is low, the LCD screen itself cannot transmit light, so it is difficult to realize the fingerprint technology under the LCD screen. Nevertheless, in recent years, many panel and mobile phone manufacturers have challenged the fingerprint technology under the LCD screen and achieved certain results.In May 2019, AU Optronics displayed a full screen optical fingerprint identification LCD screen.In June 2019, BOE revealed that the optical fingerprint sensing technology under LCD screen has been successfully developed. In August 2019, Huawei glory demonstrated the LCD mobile phone prototype equipped with off-screen fingerprint unlocking. It is reported that this prototype is the result of joint development between glory and BOE.In March 2020, Lu Weibing, vice president of Xiaomi group and general manager of Hongmi brand, announced that Hongmi team had overcome the problem of screen fingerprint, realized screen fingerprint on LCD screen and had mass production.In June 2020, TCL Huaxing announced that it had developed fixed single point on-screen fingerprint technology. It is expected to launch full screen single point on-screen fingerprint technology this year and Full Screen multi-point on-screen fingerprint technology in 2021.In July 2020, the world's first LCD on-screen multi-point fingerprint solution (Ted finger print) developed by Tianma was officially released. The scheme embeds the fingerprint image collector in the TFT display substrate, realizing the integration of touch, display and fingerprint identification.What is the evolution process from "off screen" to "on screen"?It is understood that the development of off screen fingerprint is mainly divided into off screen fingerprint (fixed single point), on-screen fingerprint (full screen single point), on-screen fingerprint (Full Screen multi-point Ted embedded), etc. Off screen fingerprint identification includes capacitive, optical and ultrasonic types. However, due to technology and cost, most of the products equipped with this technology can only realize single point fingerprint identification in a fixed area. Now, the latest R & D achievement - on-screen multi-point fingerprint solution adopts the optical fingerprint identification mode, integrates the fingerprint image collector into the display screen, and can realize "Full Screen multi-point" fingerprint identification on the full screen, which has a larger screen identification area than off screen fingerprint products.Integration and multipoint recognition become the direction of attack"The future development direction of on-screen multi-point fingerprint solution must be high integration, full screen fingerprint multi-point identification and high screen proportion." Wu Zhen, director of marketing department of Tianma Microelectronics Co., Ltd., said in an interview with China Electronics News.Specifically, the first is high integration. It is mainly to realize the three in one of touch, display and fingerprint identification. It is necessary to break through the limitation that the optical fingerprint in the LCD screen is difficult to match the thickness of the normal cover plate, so as to have more market competitiveness and mass production; At the same time, because the optical path modulation unit is integrated in the display screen, the thickness of the display screen is reduced by more than 50% compared with the external collimating optical path design scheme, making the design of terminal products lighter and thinner. The second is full screen fingerprint multipoint identification. To support full Screen multi-point fingerprint identification in any display area, it can be applied to full screen blind unlocking, APP encryption unlocking and user-defined fingerprint control to achieve high security and high privacy. The third is the proportion of high screen. The fingerprint identification function is built into the display screen to effectively improve the screen proportion of terminal products and bring users a more ultimate visual experience.In addition, the development and improvement of fingerprint under (in) LCD screen is inseparable from the dimensions of high brightness, high fingerprint recognition rate and improvement of unlocking experience. High brightness requires the brightness of the module to be more than 450 nits. To ensure that more image details are displayed, it can effectively solve the problem of serious brightness loss and bring a smooth viewing and game experience; The ultra-high fingerprint recognition rate refers to the FRR of 3%, which can reach the OLED level; in terms of unlocking experience, the use of unlocking or consumption functions is more intuitive, avoiding accidental touch, simplifying the buttons of mobile phone accessories and improving the overall beauty.It is understood that in the process of tackling the key problems of LCD off screen fingerprint technology, TCL Huaxing has solved the problems such as the development of Blu films, the improvement of TPM brightness and the improvement of infrared sensor recognition accuracy through continuous transformation and attempt of LCD backlight. Finally, TCL Huaxing has launched the LCD panel off screen fingerprint that can clearly see the fingerprint image, and realized the rapid identification function of LCD off screen fingerprint.Optimize cost and find the way of differentiated competitionThe advantage of fingerprint in LCD screen is that it can do large-area and multi fingerprint identification, and can improve the diversified space of human-computer interaction experience of intelligent terminal. For example, it can deeply encrypt app, ensure wealth security and improve vehicle driving experience; it can also provide higher-level guarantee for the information security of smart factory, smart city, smart home, smart transportation and intelligent medical treatment.According to Wu Zhen, in the future, the fingerprint on the LCD screen can encrypt any app. When users click the app icon, they need to complete fingerprint verification before they can further open and run the app. Compared with the encryption method that the existing mobile phone app needs to press the finger at the specified position for fingerprint verification, it is more convenient. The fingerprint on the LCD screen can even realize that when using a joint account on the ATM, two people need to use it at the same time The operation function of transfer can only be realized by inputting fingerprint.Since the release of full screen optical fingerprint identification LCD screen by Youda optoelectronics, Tianma's latest LCD multi touch in screen fingerprint scheme has met the conditions for mass production, and is sending samples to terminals of world-famous brands. The off screen (in) fingerprint scheme has been launched for a long time, but it has not been commercialized on a large scale. What step has the overall off screen fingerprint taken in the process of mass production application?Liu Yushi, senior analyst of cinno research, said in an interview that the under screen (inner) fingerprint of LCD has been opened up technically. Compared with the rigid OLED with optical under screen fingerprint, it has no advantage in mass production cost, so there is little practical application at present. At present, the under screen (inner) fingerprint of LCD is actively optimizing the cost and looking for a way to compete with the off screen fingerprint of OLED.Xu Jingjing, senior analyst of semiconductor device research at sigaintell, said in an interview with China Electronics News that the fingerprint scheme under the LCD screen (inside) is still in the research and development stage. From the perspective of application field, compared with mobile phone terminals, it is expected to be promoted in the vehicle display and door lock Market in the future, and mass production is expected to be realized in the second half of 2021.One of the evolution trends of touch display is to help the touch display module continuously add value by adding more functions from the device structure level. Although the latest LCD on-screen fingerprint solution still has some details to be optimized, the release of this technology has revived the confidence of practitioners in LCD fingerprint solution.
Apple still Uses Cheaper LCD Screens and Decides to Produce Them by Itself, Endangering the Interests of Many Screen Suppliers
Apple still Uses Cheaper LCD Screens and Decides to Produce Them by Itself, Endangering the Interests of Many Screen Suppliers
It is reported that Apple plans to use cheaper LCD screens on most iPhone models next year, while delaying the full conversion to high-tech organic light emitting diode (OLED) screens, which also reflects consumers' price sensitivity.According to the Wall Street Journal, apple is expected to launch an LCD model and two OLED models this fall, and the LCD model is expected to account for most of its iPhone sales. It is expected that Apple will continue to use LCD next year, which is completely inconsistent with the previous report of a complete transition to OLED.Apple announced in March that it was testing its internal microled screen.Apple's decision to insist on using cheaper LCD screens has brought more uncertainty to its screen suppliers; In addition, Apple's decision to produce its own screen endangers the interests of many suppliers.Since apple is not expected to use these products in its OLED screen, the shares of Apple's three LCD suppliers, including sharp, LG display and Japan display, have fallen sharply in the past year. Subsequently, when it was revealed in March that Apple was already testing its microled screen, the shares of many display suppliers, including Samsung, sharp and LG display, fell again. This also damages the interests of general display and Synaptics. After reports showed that Apple would use more LCD screens than expected, the share price of general display company, which provides OLED display materials, began to fall.The Wall Street Journal pointed out that Apple's decision to postpone the implementation of OLED screens does not necessarily bring opportunities for LCD suppliers. For example, LG display has planned to invest in OLED screens.Apple has been facing the problem of supply shortage in the past. If suppliers have to change their production plans, Apple may face supply shortage again. It is reported that Japan display raised $320 million in April to meet the expected demand for its advanced LCD.According to recent reports, Apple has communicated its transformation plan to its suppliers, including plans to reduce parts procurement from suppliers by nearly 20% this year. At the same time, the uncertainty of the continuous expansion of Apple's supply chain will also make the new iPhone more expensive than ever.
Apple still Uses Cheaper LCD Screens and Decides to Produce Them by Itself, Endangering the Interests of Many Screen Suppliers
Apple still Uses Cheaper LCD Screens and Decides to Produce Them by Itself, Endangering the Interests of Many Screen Suppliers
It is reported that Apple plans to use cheaper LCD screens on most iPhone models next year, while delaying the full conversion to high-tech organic light emitting diode (OLED) screens, which also reflects consumers' price sensitivity.According to the Wall Street Journal, apple is expected to launch an LCD model and two OLED models this fall, and the LCD model is expected to account for most of its iPhone sales. It is expected that Apple will continue to use LCD next year, which is completely inconsistent with the previous report of a complete transition to OLED.Apple announced in March that it was testing its internal microled screen.Apple's decision to insist on using cheaper LCD screens has brought more uncertainty to its screen suppliers; In addition, Apple's decision to produce its own screen endangers the interests of many suppliers.Since apple is not expected to use these products in its OLED screen, the shares of Apple's three LCD suppliers, including sharp, LG display and Japan display, have fallen sharply in the past year. Subsequently, when it was revealed in March that Apple was already testing its microled screen, the shares of many display suppliers, including Samsung, sharp and LG display, fell again. This also damages the interests of general display and Synaptics. After reports showed that Apple would use more LCD screens than expected, the share price of general display company, which provides OLED display materials, began to fall.The Wall Street Journal pointed out that Apple's decision to postpone the implementation of OLED screens does not necessarily bring opportunities for LCD suppliers. For example, LG display has planned to invest in OLED screens.Apple has been facing the problem of supply shortage in the past. If suppliers have to change their production plans, Apple may face supply shortage again. It is reported that Japan display raised $320 million in April to meet the expected demand for its advanced LCD.According to recent reports, Apple has communicated its transformation plan to its suppliers, including plans to reduce parts procurement from suppliers by nearly 20% this year. At the same time, the uncertainty of the continuous expansion of Apple's supply chain will also make the new iPhone more expensive than ever.
Will the LED Transparent Screen Become the "Darling" of the LED Screen Market?
Will the LED Transparent Screen Become the "Darling" of the LED Screen Market?
Led transparent screen is a popular subdivision screen in the LED field in recent years. We often see the figure of transparent screen whether it is glass curtain wall, glass window or shopping mall. As one of the high-end display products, the price problem of the original transparent screen makes many users can only wait and see from a distance.With the rapid development of LED transparent screen, its price has also decreased significantly to the acceptable range of users, and various spacing and special-shaped display products emerge in endlessly. Transparent screen is gradually emerging in the commercial display field because of its unique display style.Scientific and technological progress is the core of social development and the first productive force. The transformation and upgrading of science and technology has not only greatly improved the modern production capacity of enterprises, but also further improved human vision in social development. In recent years, with the strong support of the construction industry in big cities, the glass curtain wall area of commercial buildings has reached a new peak. In this regard, led transparent screen manufacturers have made major technical upgrades to the transparent display scheme of large-area glass curtain wall. As a provider of indoor and outdoor LED transparent screen display solutions, Shenzhen Jingang vision is also very happy to contribute to our strength under the mainstream of this market.In order to expand the scope of commercial display application market, we continue to integrate new technologies and introduce various innovative technologies, products and solutions to the market. In recent years, led transparent screen solutions have become more and more common due to the use of advanced technology and most market participation. This popularity has also prompted the outbreak of urban commercial exhibition industry, which is also due to the continuous improvement of infrastructure and the rapid development of urbanization.When it comes to transparent screens, the market segments are relatively broad, and the market segments are based on products, technologies, components, display types, screen sizes and application scenarios. Based on various segments, led transparent screen can help enterprises choose growth niche market and strategic development, and determine the difference between the core application field of products and the target market.
Principle of Touch Screen Capacitance Screen_ What Are the Application Areas of Touch Screen
Principle of Touch Screen Capacitance Screen_ What Are the Application Areas of Touch Screen
Principle of touch screen capacitance screenTouch screen is the most friendly computer user interface at present. It is more and more widely used in consumer electronic products. The touch detection device and touch screen controller are good. The mechanical structure of the detection device is damaged in the process of touch screen device, resulting in the decline of touch accuracy and shortening of service life of the touch screen; In addition, the cost of commonly used capacitive and resistive touch screens is relatively high. Inductive touch screen can avoid damage to the touch detection device during touch and prolong the service life of touch screen products.The working principle of inductive touch screen, as well as the hardware circuit and part of the program design of the controller, all of the controller circuits have passed the verification. The non-direct contact touch of inductive touch screen avoids the damage to the touch detection device, prolongs the service life of the whole touch control system, and the repetition accuracy and touch sensitivity of touching the same point meet the expected design requirements.The capacitive induction touch screen is not affected by dirt, dust or oil stains, but it will be affected by the surrounding environment to varying degrees because it adopts the electric field coupling principle. At the same time, the capacitive induction touch screen has serious drift phenomenon.What are the application areas of touch screenTouch screen has become a hot spot in the market. In the market, shopping malls, hotels and other places, it is still dominated by smart phones. The growth momentum of the smartphone market slowed down and entered a period of gentle development. The application of touch screen outside mobile phones, such as automotive electronics, retail, medical treatment, public facilities, leisure and entertainment, will promote the rapid growth of touch screen market.In addition to applications in large fields, touch screens can be innovated in subdivided fields. In the field of "pen writing tablet", innovate the touch screen.The products have been extended to tablet with pen writing function, e-book, all-in-one machine, electronic whiteboard, etc. And the pen and hand can be used at the same time. When one hand is touching, the pen can also write at the same time.The traditional materials of capacitive touch screen are ITO, metal grid, nano silver wire, carbon nanotube, conductive polymer, graphene, etc. Metal mesh and nano silver wire have more supporters. Both materials are metals (silver or copper) and their conductivity is better than ITO.
Screen Fingerprint Identification Will Be Applied to LCD Screen, Not Just OLED
Screen Fingerprint Identification Will Be Applied to LCD Screen, Not Just OLED
Fingerprint identification on mobile phones has become an indispensable part of our daily life.Especially during the epidemic, face recognition is mostly paralyzed due to wearing masks, and fingerprint recognition has become the current optimal solution.Of course, if you use a mobile phone without fingerprint identification such as iPhone x, you have to find a way by yourself...9to5mac also gave a tutorial on using face ID with mask Screen fingerprint identification has become the mainstream, and the technology is also very mature. However, Tony saw a news while surfing the Internet today, saying that Tianma, a domestic LCD and LCM design company, released the world's first LCD Screen multi-point fingerprint identification scheme (Ted finger print, referred to as TFP).The strength of this scheme is that the off-screen fingerprint identification mobile phones we use now are basically OLED screens, while the LCD screen basically has no on-screen fingerprint identification...One plus 6T off screen fingerprint identification diagram As we all know, the screen fingerprint unlocking needs the illumination of the light source for fingerprint identification, but the LCD screen is relatively thick and has poor light transmittance; Second, the LCD screen cannot emit light actively, and the backlight will interfere with the identification of optical fingerprints.These two problems make LCD basically bid farewell to screen fingerprint recognition.Therefore, mobile phones with LCD screen basically adopt side fingerprint identification, and some will be combined with the power key on the side of the mobile phone.But OLED screens don't have this problem. Because the OLED screen is thinner and more transparent, it is natural to use fingerprints on and off the screen.Then why do manufacturers not directly on the OLED screen, but want to operate madly on the LCD screen? The reason is also simple: because LCD screens are cheap...Although Lu Weibing, vice president of Xiaomi, said publicly some time ago that Hongmi team successfully realized fingerprint recognition under LCD screen on a redmi note8 Pro prototype, so far, no manufacturer has officially announced this technology, and Tianma is the first.So Tony was surprised when he saw the news. This fingerprint identification scheme can be said to break through the two obstacles of current screen fingerprint identification technology - LCD screen and identification area.If the multi-point fingerprint identification in the LCD screen can achieve mass production, it means that the LCD screen can also use fingerprint identification!Another point is the identification area of off screen fingerprint identification.So far, the identification area of screen fingerprint is basically fixed, almost at the lower position of the screen. People will subconsciously put their fingers at the approximate position when unlocking the mobile phone.But no one can guarantee that every time the finger is pressed on the fingerprint identification area, because the identification area is so large, it is inevitable that there will be deviations...The scheme announced by Tianma this time shows that it can make the whole LCD screen recognize fingerprints!Tony mended his brain, that is, I could identify my fingerprint and unlock my mobile phone by placing my finger anywhere on the screen.If this multi-point fingerprint identification technology can be mass produced, the efficiency of unlocking the screen will be much higher than now. You don't have to find the identification area and poke it on the screen.It can be said that Tianma's operation directly makes the LCD screen ride on the head of OLED in fingerprint identification. Once LCD screens didn't even deserve fingerprint identification. Now they not only have fingerprint identification, but also can identify 5 at a time...As for why the multi-point fingerprint solution in the TFP screen can realize these functions, high integration has played a great role.In short, it is to integrate touch, display and fingerprint identification, replace the previous design of fingerprint identification module and reduce the thickness of the screen, so that the screen fingerprint identification is feasible on the LCD.At the same time, in order to realize fingerprint identification on the whole screen, Tianma covers the whole screen with optical path and sensors.As for how multi-point fingerprint identification can play new tricks, it still depends on the subsequent operations of manufacturers.As for the fate of LCD screen after mass production of this scheme, we still don't know, but before that, LCD screen has never been the first choice for mobile phone manufacturers.After all, the OLED screen is thinner, can emit light by itself, and the color is more bright. The experience is much better than that of LCD, but there are still problems of stroboscopic and screen burning, and the price is relatively expensive.When it comes to the LCD screen, the advantages and disadvantages are reversed...The price of iPhone 11 with LCD screen is lower For most users, OLED screen is their first choice, but there are still a group of people who stick to the LCD screen.In addition to having a larger viewing angle, another reason is that they can't accept the strobe of OLED screen. They think it's really hurting their eyes...Therefore, once the TFP scheme realizes mass production, the defect that the LCD screen has no off screen fingerprint will be supplemented. If the price can be controlled well, the current situation of the screen in the mobile phone market may change a lot.However, before that, the mobile phone market was still dominated by OLED screens, not to mention the suoper AMOLED screens such as Samsung. The evolution of LCD screens has a long way to go...
What Is the Forming Process of the Flexible Touch Screen
What Is the Forming Process of the Flexible Touch Screen
Every day, new products, new experiences, professional membrane switch proofing factory, 12 hour expedited shipmentFrom the hot sale of Samsung Galaxy edge flagship series to the advent of various curved screen bracelets and TVs, it is no doubt that curved screen technology has been widely valued and sought after by consumers and the industry in recent years. In the future, with the continuous development and improvement of fixed curvature curved screen technology, the flexible touch screen that can realize arbitrary bending will become an important development direction. On the 25th, at the 13th International touch screen and display technology development forum, Huang Hanfeng, deputy general manager of touch R & D from Shenzhen oufeiguang technology, made a detailed introduction to the flexible touch screen from the perspective of the industrial chain around the four key elements of flexible display, flexible touch, flexible cover plate and flexible bonding.Flexible displayFor LCD display, the LCD is usually responsible for controlling the display gray, and the three primary color filters control the display color, which requires them to correspond one by one in order to display normally. If the LCD panel is used as a curved screen, the inner circumference and outer circumference will be unequal, and the original one-to-one corresponding liquid crystal and filter will have position deviation, resulting in color distortion. In addition, it will also cause a series of problems such as light leakage, dark screen ghosting and snowflakes. Therefore, for the curved screen, the OLED display technology represented by AMOLED has almost become the best choice.Huang Hanfeng said that at present, Samsung is the undisputed AMOLED overlord in terms of patents, production capacity, yield and technology accumulation. The sixth generation AMOLED panel that began mass production at the end of 2014 can now produce 50000 pieces per month, and the yield can reach 60%. The second is LG, but LG has been focusing on large screen curved TV. At present, with the increasingly obvious trend of small screen AMOLED, LG is also accelerating the layout of small and medium-sized flexible screens. Although its output is not as good as Samsung, its yield can also reach more than 60%. The latest release of Xiaomi note 2 is the flexible AMOLED screen of LG. In addition, Japan's JDI and sharp (already acquired by Hon Hai), Taiwan's Youda, domestic BOE, Rouyu and other screen manufacturers are also accelerating the layout of their own AMOLED technology. It is the general trend for AMOLED to replace LCD.Flexible touchIn terms of touch control, ITO (indium tin oxide) transparent conductive film has become the most important touch layer material for display screens such as non curved LCD and OLED due to its good light transmittance, low thickness, excellent hardness and conductivity, mature manufacturing technology and many other reasons. However, as ITO itself is a brittle material, it is not suitable for making flexible touch layer with large curvature or even free bending, and the cost and cost are high. At present, it accounts for about 30% - 40% of the cost of the upstream material part of the whole touch screen industry, and uses "indium", a rare metal with limited reserves. Therefore, with the advent of the era of curved surface and flexibility, it is likely to be replaced.Huang Hanfeng said that at present, the main substitutes for ITO materials are graphene, carbon nanotubes, nano silver and metal mesh. Graphene and carbon nanotubes are very good substitutes for ITO from the characteristics of the material itself. However, graphene is still in the R & D stage and is still far from mass production. The industrial mass production technology of carbon nanotubes is not perfect, and the conductivity of the thin film products made of carbon nanotubes is not as good as that of ITO. Therefore, from the perspective of technology and marketization, metal grid and nano silver technology will be the protagonists of development in recent years. Metal grid technology has been applied in some PC display markets.The metal mesh technology mentioned here is a conductive metal mesh formed by pressing metal conductive materials such as silver and copper or oxides on thin film substrates such as pet. Its main advantages are low raw material cost and good folding ability. However, due to the problem of Murray interference ripple caused by yield, output and high-speed pixels, it is more suitable for desktop all-in-one computers, laptops, televisions and other products with low resolution and relatively long-distance use.Nano silver technology means that nano silver ink material is coated on pet or glass substrate, and then laser lithography is used to depict the conductive network of nano silver wire. Its main advantages are high yield, small linewidth, good conductivity and folding resistance, while its disadvantage is high cost. Moreover, compared with metal mesh, nano silver material has smaller radius of curvature and small resistance change rate during bending. In addition, due to the linewidth, it is more suitable for high-resolution close-up scenes such as mobile phones, smart watches and bracelets."By comprehensive comparison, I think nano silver has more advantages than metal grid," Huang Hanfeng said.Flexible cover plateIn order to bend at will, in addition to solving the flexible display and flexible touch, the last and most critical part is the flexible cover plate and fitting. However, due to its hard and fragile characteristics, glass cover plate is not the best choice in the field of flexibility.Huang Hanfeng said that compared with glass, pet and PI (polyimide) materials with high surface hardness and high light transmittance are better choices, but at present, pet and PI also have many problems to be solved. On the one hand, they are not resistant to high temperature and have poor light transmittance: pet and PI will have problems of partial melting and property change at low ambient temperature, and they do not have good light transmittance compared with glass.Secondly, it is difficult to achieve a balance between hardness and folding. Huang Hanfeng said that if you want to meet certain hardness requirements, you need to apply the hardened layer, but after coating the hardened layer, after repeated folding, the hardened layer will crack and reduce the hardness. Therefore, how to achieve a balance between the two is the biggest bottleneck at present.Compared with the flexible cover plate that needs further development, the 3D glass cover plate necessary for curved screen mobile phones has a very good development prospect.Some data show that 2018 may become the outbreak year of 3D glass cover plate. It is expected that the mobile phone penetration rate of 3D glass cover plate will exceed 50% around 2020. With the maturity of 3D glass cover plate processing technology and the decline of unit price, the penetration rate will further improve. It is expected that the market scale will reach more than 19 billion yuan in the future.Huang Hanfeng said that the common manufacturing processes of 1R (single radian bending) and 2R cover plates have been basically mature. They basically achieve a bending effect through hot bending technology. The difference is mainly in the coating of hardened layer. However, the yield is a problem to be solved, which is basically only 30%, and there is no room for improvement in the short term. If 4R is to be done in the future, the yield will be lower. Therefore, the yield is one of the urgent problems to be solved in the manufacture of cover plate.Flexible fitAfter the cover plate is selected, it is fitted, that is, the cover plate is integrated with the touch and display layer below to form a complete module. At present, there are two common methods: roller type and vacuum bonding: the roller has high efficiency and needs to roll the pasted object. The efficiency of vacuum type is relatively low, but it does not need to roll the pasted object, so it is not easy to cause damage to the pasted object.Huang Hanfeng said that if the curvature is large, you can only choose vacuum bonding. However, for the possible 4R bonding in the future, due to its special four side bending characteristics, it is difficult to avoid wrinkles and bubbles in places with large radians even if vacuum is adopted. At present, the industry has adopted customized extrusion airbags or plastic parts to alleviate this problem, but it has not been completely solved. Therefore, the industry still has room for progress in multi surface and high curvature fitting technology.Huang Hanfeng frankly said: "from the perspective of the supply chain, it will take several years for the flexible screen to really realize mass production. At the same time, it also needs the upstream and downstream supply chain to jointly overcome the relevant technical problems."For future development, Huang Hanfeng believes that the integration of various modules will be the general trend. He said: "in the incell technology of LCD, ITO touch film and liquid crystal layer are integrated together, which is a good integration. Now the fingerprint module is independent, and it can also be integrated with touch in the future. I think there will be a process of mutual integration and progress between functional modules in the future."
no data
Contact US

    Bao’an District  Shenzhen City, China

     +86 189 3806 5764

NEWSLETTER SUBSCRIBE
no data
Copyright © 2021 CrowBerry

   

chat online
NEED HELP? WE'RE HERE!