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Company News >> Academician of the Chinese Academy of Sciences Ouyang Zhongcan: OLED does not necessarily replace LCD 3rd,Dec,2018
                                             At present, OLEDs continue to move forward toward higher resolution and flexibility; LCDs are also constantly innovating, moving toward higher definition, larger size, and lower cost. Who is the OLED and LCD? Can OLED really replace LCD? At the "2016 Cross-Strait (Nanjing) New Display Industry Summit Forum" held on June 23, the Chinese Academy of Sciences academician Ouyang Zhongcan pointed out that OLED and LCD have different development space.

"Now the controversy about OLED and LCD is not the first time." Ouyang Zhongcan said, "A few years ago, an economist said that OLED should replace LCD all day long, and later found out that he was trying to speculate on the 'fire' stock market. Now it is Some stock analysts are speculating that OLEDs will replace LCDs."

At present, there are controversies about OLED TV and quantum dot TV in China, and the representative enterprises are Skyworth and TCL. It is reported that Samsung will skip OLED TV and directly enter QLED. According to a recent report from DisplaySearch, it is expected that the OLED market will grow at a CAGR of 93.4% from 2015 to 2019. Skyworth said that in 2016, only Skyworth's OLED TV sales will increase by 10 times. By 2019, OLED products will replace LCD TVs and become the mainstream of the color TV market.

Ouyang Zhongcan stressed that Samsung claimed to do OLED TV three years ago, but now Samsung does not plan to implement OLED TV immediately. Instead, it will do quantum dot TV and prefer LCD.

A comment on "OLED-Info newsletter" is also worth considering. The comment reminds: to prevent spending money. Ouyang Zhongcan said that South Korea's production line was built earlier than mainland China, mostly a-Si, while mainland China is low-temperature polysilicon, which is more competitive than South Korea, so Korean manufacturers hope other manufacturers buy equipment and earn equipment money. .

The current LCD process is deterministic, and the OLED process is not determined. In addition, lifetime is a weakness of OLEDs. A theoretical physicist's explanation: According to the quantum theory uncertainty principle, the product of the energy level width and the energy state lifetime is constant, and the energy level is inversely proportional to the wavelength, so the blue light lifetime is shorter than the red light, and the OLED will become "red face" after a long time. . Ouyang Zhongcan explained that red light and blue light under the same energy, the blue light is weak and the life is short. In the future, the use of mobile phones will become longer and longer, and will OLED mobile phone screens become "red faces"? So OLEDs don't necessarily replace LCDs.

Ouyang Zhongcan said that some people compared OLED TV with the best 4K LCD TV last year. OLED TV has the upper hand in blackness, brightness and viewing angle. But there are also points of view: "The choice of a TV depends entirely on its use. In terms of picture quality and dazzling movie experience, OLED TV is theoretically superior. This is due to its unprecedented perfect black level and picture reproduction. This kind of function comes from cost. If the screen is only used to watch general content and music, then 4K TV is the best for you."

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