After defeating the CRT, LCD technology became the undisputed king of the display field for almost 20 years. In October 2013, Panasonic announced the suspension of plasma TVs at the end of March 2014. An era was formally ended, and the historical mission of challenging LCDs was taken over by OLED.
From LCD to OLED, ironic dynasty replacement
Ironically, the flat surface LCD technology replaced the curved CRT cathode ray tube 20 years ago; after 20 years, it is also possible to replace the LCD with a curved surface technology, OLED (Organic Light Emitting Diode).
At the CES show in early 2013, the world’s first curved OLED TV was introduced by LG. What is more ironic is that, just as manufacturers sold their flat-panel CRT monitors for the CRT's continued life, the same as the year, Sony launched the world's first curved LED TV in response to the looming OLED.
Technology is cruel, LCD LCDs have beaten CRT, but LCD will soon be replaced by other technologies. However, before being replaced, manufacturers will continue to launch transition products for the original LCD production line. This time, it is trying to seize the curved LCD TV that originally belonged to the OLED market.
OLED TV structure
East Shi effect, why ordinary LCD should not be made of curved surface?
The curved surface display can be used to obtain a relatively larger user's field of vision, enhance the sense of presence of the watch, and the curved television has a more shocking appearance. So it can be easily made into a curved OLED, and it is designed by LG as a curved OLED TV. But the same thing has been put on the LCD to be completely effective.
LCD liquid crystal imaging principle and structure is more complicated. It controls the rotation of liquid crystal molecules through voltage control, thereby blocking the backlight to control the color depth (grayscale brightness), and then allowing different sub-pixels to display the three primary colors through the polarizer and the filter, so that the sub-pixel points with controllable depth and color can be obtained. Different images are displayed through the pixel array.
The TN, IPS, MVA, and PVA panels that we usually listen to are all TFT-driven LCD displays. Their differences are mainly the arrangement of liquid crystal molecules. In the actual structure, the key liquid crystal molecules are sandwiched between two glasses and driven by a voltage applied by a TFT (Thin Film Transistor).
For each sub-pixel point, the liquid crystal is responsible for controlling the gray scale, and the three primary color filters control the colors. They must correspond one by one to display the correct color. If the LCD panel is bent, the inner perimeter will be smaller than the outer perimeter, and the original one-to-one correspondence between the liquid crystal and the filter will cause a positional deviation, resulting in a distorted color change. Other side effects include light leakage, dark screen ghosting, and snowflakes.
