At present, the challenge of OLED is the application on the screen. How to replace LCD as a new screen material is a problem that OLED needs to solve. The reason why LCD can be replaced is because it is very complicated, and there are many layers of structure, such as some brightening film, so that its display effect can be very beautiful. The OLED has only two layers, and it can emit light after being energized, and the material of the light-emitting layer is different. Compared with LCD, the biggest difference of OLED is that black is black. It is a self-illuminating product. When the power is turned off, it can no longer be illuminated. If the display is made with OLED, there will be high contrast. It is not unique to the light source, but it is very important for the display.
OLED has shown superior performance in some applications. Although OLED and LED are not much different in mobile phone display, the application of TV screen needs to overcome many obstacles, which is also very important for the application development of OLED. For example, an OLED TV from LG is 77 inches in size and can be curled. In the middle of the screen is a white OLED as a filter. According to this technology, our display will be able to expand indefinitely. The 77-inch is just a display, but the size of an OLED TV can be larger than this.
At present, OLED TVs are already on the market in Hong Kong and the United States. It performs better than LED displays and sells for $10,000. In addition to LG's use of white OLEDs as TV display materials, Samsung is also developing OLED TVs, which it believes will replace LCD TVs in the future.
At present, according to market forecast data, by 2016, the number of OLED TV displays will continue to grow.
It has a high color efficiency for OLED applications in lighting, and it will appear black when the power is cut. For different applications, the characteristics of OLEDs can be presented as advantages and can also be a disadvantage. Since it is a scattered light source, it cannot be used as a point source. At present, OLED is a light source, which is very expensive. The luminous flux price of 1000 lm reaches 800 US dollars, while the LED only needs 16 US dollars. Therefore, OLEDs must reduce costs in order to be more competitive.
In addition, LEDs have a lot of blue light, but there is not enough green light. OLEDs have a lot of green light and very little blue light, so they can be made into very soft light.
For the future application of OLED, it is hoped to reduce the price of OLED and enhance its performance, which will eventually promote its large-scale application in lighting and display.
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