Organic light emitting diode (OLED) is a liquid crystal display with LED as backlight, that is, only when the LED shines on the four borders of the screen can you see the characters and colors displayed in the liquid crystal.
Because the LED only exists in the middle of the special frame, the light emitted by the diode in the middle of the screen will weaken and darken in the middle of the screen after the screen is large, so it is not suitable for the big screen.
Extended data
Development of oled display technology
Organic light emitting diode display technology is different from the traditional liquid crystal display mode. It does not need backlight, and uses very thin organic material coating and glass substrate. These organic materials will emit light when current passes through them. In addition, the organic light-emitting diode display screen can be made lighter and thinner, with a larger viewing angle, and can significantly save electricity.
Among the two technical systems of organic light-emitting diodes, the technology of low-molecular-weight organic light-emitting diodes is mastered by Japan, and the so-called OEL of polymer PLEDLG mobile phone is this system, and the technology and patents are mastered by British technology company CDT. There are still difficulties in coloring PLED products. Low molecular OLEDs are easier to be colored. Not long ago, Samsung released 65,530 color OLEDs for mobile phones.