From smart advertising machines to high-end TVs, the market for liquid crystal display screens is being swallowed step by step, and OLED liquid crystal display screens are beginning to rise. Needless to say, the performance of OLED display screens in the smart phone market, under the influence of comprehensive display planning and foldable display screens, Apple has also devoted itself to the embrace of OLED liquid crystal display screens.
I don't know when it started, OLED liquid crystal display screens will gradually become the mainstream of the market. From smart advertising machines to high-end TVs, the market for liquid crystal display screens is being swallowed step by step, and OLED liquid crystal display screens are beginning to rise. Needless to say, the performance of OLED display screens in the smart phone market, under the influence of comprehensive display planning and foldable display screens, Apple has also devoted itself to the embrace of OLED liquid crystal display screens.
In the LCD TV market, the situation is not as absolute as in the smart advertising machine market, but in 2018, the global sales of OLED TV panels will hit the 4 million mark, maintaining a trend of rapid growth. At the same time, in the proportion of high-end TV shopping malls, HIS research data shows that OLED liquid crystal display screen products account for more than 60% of TV products priced at more than US$2,500. It can be seen that whether it is a smart advertising machine market or an LCD TV market, OLED display screens have given extremely eye-catching results, and the proportion of high-end commercial venues is increasing.
Reasons to promote the popularization of OLED
The OLED liquid crystal display screen can be very popular, and the most important thing is still its display function. Thanks to its self-luminous properties, OLED display screens can provide a wider view point. In addition, OLED display screens can also bring near-infinite contrast. This means that the OLED screen can bring the ultimate black performance. The color gamut of OLED screens is also wider. Compared with the lightness of the LCD screen, the beauty of the OLED screen is obviously more pleasing.
Since there is no backlight module, this makes OLED liquid crystal display screens thinner and lighter, resulting in thinner and lighter OLED TVs. In the future, when the skills develop to a certain stage, OLED TVs may be able to be as thin as paper.
Everyone hurts their eyes?
Even if the OLED display screen is as good as possible, there are still many customers in the shopping mall who firmly support the LCD screen. The reason is that a large proportion of customers will experience eye discomfort after watching the OLED screen for a long time. Once you switch back to the LCD liquid crystal display screen device, this symptom will immediately disappear.
It can be seen that the OLED screen may be harmful to human eyes.
But after research by professionals, we can know that the eye injury problem of OLED screens depends on personal physique. Some customers do experience visual fatigue and other symptoms when viewing the OLED screen, but at the same time, a large number of customers still indicate that it has no effect.
The culprit PWM dimming
PWM dimming is not a linear relationship for brightness control, but instead depends on the relationship between lighting and calming frequencies. That is, in a unit time, when the display screen is bright, it means that the number of times of alternating on and off of the screen is high, and when the display screen is dark, the number of times of alternating on and off may be low.
This means that the brighter the OLED screen, the higher its stroboscopic (the number of times the screen turns on and off). The darker the screen, the lower the screen flicker. The IEEE also has data display. OLED screens that use PWM dimming should at least control the screen flicker frequency above 1250HZ if you want to not hurt your eyes. If you want to not affect human health at all, you must increase the flicker to above 3000 Hz. However, the current mainstream OLED screen strobe is basically maintained between 200Hz-500Hz, which is far lower than the health standard given by IEEE.
However, the current LCD liquid crystal display screen is always on, so there is no problem of stroboscopic, so it is relatively safer. But it must be clear that the LCD screen can also be PWM dimmable. Only with the continuous development of skills, the LCD screen of PWM dimming has been screened.
