In recent years, with the increasing demand of end users for viewing movies and entertainment, full-screen mobile phones with high screen-to-body ratio have been favored by the market. Recently, BOE launched a new generation of flexible OLED true 400PPI FDC (FDC, Full Display with Camera) under-screen camera technology. Different from the "one-drive-multiple" pixel circuit design on the market, the BOE FDC under-screen camera technology adopts a one-drive-one-pixel circuit design. There is no difference between the FDC camera area and the peripheral screen display, and there is no thin line display at the edge of the camera area. It has the ultimate panoramic display effect, and the FDC shooting and imaging effect has reached the leading level in the industry, and has been applied to the under-screen camera type of the first-line mobile phone manufacturers, becoming the vane leading the development of the industry's mobile phone under-screen camera technology!
FDC technology refers to a technical solution that cancels the camera hole of the front camera on the original screen and builds the front camera under the display screen. Compared with the notch screens and water drop screens currently on the market, it achieves a true full screen without holes.
OLED screens can support under-screen cameras because the gaps between OLED pixels are transparent. Under the conditions of the same photosensitive device, the higher the light transmittance, the better the shooting effect of the under-screen camera. However, due to the presence of various metal lines such as pixel drive circuits and anodes in the camera area under the screen, light will be diffracted on the grid structure formed by these metal lines, causing glare and reduced resolution when taking pictures. How to achieve both non-porous display and shooting?
BOE's flexible OLED FDC technology uses 1 drive 1 pixel circuit, that is, one pixel circuit drives one OLED pixel unit. This solution does not reduce the pixel density of the camera area and does not reduce the pixel drive circuit, and optimizes the spatial arrangement of pixels in the camera area. And film stacking design, improve the visible light transmittance, increase the amount of light entering the camera under the screen, while improving the camera effect, realizing a high-resolution undifferentiated true full-screen display;
At the same time, based on the powerful optical simulation capabilities, the circuit and backplane design are further optimized, the shape of the pixel unit is optimized, the degree of light diffraction is minimized, the glare is reduced, and the imaging resolution is greatly improved, combined with the terminal de-yellowness algorithm and diffraction The AI algorithm truly achieves both perfect display and shooting.
Finally, BOE’s leading brightness compensation algorithm can increase the lifespan of the screen by 50%, and also ensure the mass production of this technology, which is conducive to the future promotion to more product platforms and consumer use scenarios, such as under-screen structures. Light to realize face recognition and so on.
In terms of long-term technological development, BOE will continue to iterate on FDC technology. The goal is to continue to increase the light transmittance and the refresh rate of FDC screens. It is willing to cooperate with more manufacturers to make this technology perfect.