Flexible OLED applications have limited screen fingerprints have to look at LCD

- Apr 24, 2018-


In the case where the hardware performance of smartphones has reached a bottleneck, the biggest consumer of mobile phones and mobile phone-producing countries, China, cannot temporarily overcome cost disadvantages in chips and memory, and China’s smartphone market is rapidly changing from an incremental market. To the stock market, how to differentiate and compete on other smart phone components has become the number one problem for Chinese smart phone manufacturers.

In order to intuitively export product differentiation features to consumers, most companies in the industry have upgraded the components of their smartphones to the touch-sensitive, visual, and audio-related handset bodies, fingerprint identification, display screens, and cameras and audio processing.

In recent years, mobile phones that are differentiated and competed by audio processing have been difficult to distinguish due to the limitations of mobile phone body space, the homogeneity of the quality of the chip model, the quality of the music source, and the individual differences in individual musical sensations. Competitors form a substantive distinction and have slowly been diluted by the industry.

Due to the different competition in mobile phone body materials, due to the large amount of front-end testing costs, Chinese mobile phone manufacturers rarely make achievements in this area. In addition to a limited number of millet models such as millet using a ceramic body, they are generally The models previously released by international brands are reference designs to save the cost of their own exploration. Therefore, taking the mobile phone body as a way to make a fuss, it is difficult to get through in the Chinese mobile phone market.

At present, China's mobile phone manufacturers are the most intensely differentiated three different components, mainly in the field of display screens, fingerprint recognition, and cameras. These three components are directly reflected in the consumers' sense of touch and visual use. If they are publicized, it is easy for consumers to resonate.

However, as the AI artificial intelligence algorithm gradually begins to gain popularity in the mobile phone industry, many different functions in the camera field will be replaced by later software algorithms. The final focus may only be the focus and storage speed, and they will no longer pay attention. The software quality that can be completed by the later software algorithm, so the competition in the camera field will soon be likened to the industry as audio processing.

So now the smart phone manufacturers have transferred the object of differential competition to the display screen and fingerprint recognition, the labeling of the OLED and the LCD, the identification of the pre-fingerprint and the post-fingerprint, the identification of the external fingerprint and the fingerprint recognition under the screen. The benchmarking has gradually become a hot topic in the industry.

The competition between pre-fingerprint identification and post-fingerprint identification, due to the promotion of full-screen display technology, has once again been precluded by the post-fingerprint identification technology in the short-term, allowing the original efforts to increase the penetration rate of fingerprint identification chips and deploy fingerprint identification covers. The manufacturers that fit the production capacity have once again returned to the original point.

The breakthrough of full-screen display technology has allowed the fingerprint technology under the screen to begin to show a turning point, and has allowed manufacturers who have accumulated technology in the penetration of fingerprint recognition chips to see the hope again. Everyone is turning to work hard to develop how to display on the screen. The following is a normal working fingerprint identification chip and related fingerprint identification module technology.

According to information Li Xing learned from the industry, the transparent capacitive fingerprint sensor technology applied under the cover plate or under the polarizer can support both OLED and LCD display screens; it can be applied to the TFT drive layer or the bottom substrate of the display screen. The back of the optical fingerprint sensor, you can also support both OLED and LCD display; applied to the back of the display board on the back of the ultrasonic fingerprint sensor, can only temporarily support OLED display.

The vast majority of screen fingerprint recognition mobile phones that have been released and will be released in the industry are equipped with easy-to-implement flexible OLED displays, mainly supplied by Samsung and LG. Samsung's and LG's use of on-screen fingerprinting technology on their own mobile phones is still relatively conservative, and the industry is basically still testing the water phase. Therefore, the current under-screen fingerprinting technology urgently needs to overcome how to implement on the LCD screen.

Among them, in addition to the limited production capacity of OLEDs and the high cost, fingerprint identification technology under the screen is a screenable and negligible function relative to the promotion of OLED display technology, which is only an experience for consumers. Difference, a little inconvenience; and OLED display technology to replace the LCD display technology, if the display effect of the situation, the consumer will determine the phone's failure, the risk is much greater.

If you can use a stable, under-screen fingerprint recognition technology, with a stable LCD display technology, this product portfolio does not have the advantages of OLED display, but it can give consumers a better overall experience. Therefore, to achieve breakthroughs in fingerprint recognition technology under the screen, it may be possible to use LCD display technology, which will be a powerful tool to guide industry competition again before the popularity of 3D face recognition technology.

At present, fingerprint identification chip manufacturers are concentrating on attempting to overcome fingerprint recognition technology under LCD screens. Among display manufacturers, JDI has announced that it will launch integrated screen fingerprint identification products this year, including LCD and OLED technologies. However, in order to be truly competitive, smart phone manufacturers, LCD manufacturers, and fingerprint identification chip manufacturers may have to work together.