The hottest light guide plate is used on LCD TV pa

2022-08-16
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Light guide plates are used on LCD TV panels to help LCD catch up with OLED panels in the high-end market

Samsung LG develops ultra-thin LCD panels that are as thin as OLEDs. Soon, TV manufacturers will launch ultra-thin LCD TVs with a thickness of only 5 mm. The current "wallpaper TVs" use OLED screens, and LCD TVs will soon be the same thin. It is estimated that from 2018, TV manufacturers will compete in the ultra-thin high-end TV market, which is more intense than before, because the market has an increasing appetite for 70 inch and larger TVs, and manufacturers have competed very hard

industry sources revealed on the 6th of this month that LG display has recently started mass production of new LCD panels, which use glass light guide plates, not plastic light guide plates. Samsung display has also developed a new quantum dot panel. Samsung has coated the glass light guide plate with QD material. At present, Samsung is attracting customers

oled does not need independent light source, LCD needs light source and other components, so LCD TV is thicker than OLED TV. LG Electronics has developed a wallpaper OLED TV, which is very thin, just like wallpaper, with a thickness of only 4mm. Generally speaking, the thickness of ordinary LCD TV is about mm

if the light guide plate is used on the LCD TV panel, the thickness can be greatly reduced. With this technology, LCD can catch up with OLED in the high-end market, which not only values thickness and weight, but also pursues ultra-high image quality and super size

light guide plate is the main part of backlight unit (BLU). In the LED LCD panel, the LED light is installed next to the light guide plate, and the light is sprayed on the surface of the large screen through the light guide plate. The light guide plate distributes light evenly and illuminates the surface

generally speaking, the light guide material used by enterprises is transparent polymethylmethacrylate (PMMA) in the future. Because PMMA is very strong and light, it is not easy to crack, and PMMA has excellent transparency and brilliance. When placed where there is visible light, the light absorption ability of the polymer is also very weak. Unfortunately, PM can efficiently enrich and grab the harmful heavy metal element MA in the soil, which is not heat-resistant and moisture resistant, and will deform and stretch over time

in order to solve these problems, manufacturers will install a wider frame when designing TVs, leaving a wider air gap, but in this way, the thickness of Blu will increase

enterprises can use glass as light guide material because it is heat-resistant and moisture-resistant. Why didn't enterprises choose glass? Because glass also has shortcomings, compared with other materials, its gloss is worse. The display manufacturer changed the composition of the glass and developed a special glass, which is particularly suitable for light guide plates

for example, the functions of as are introduced as follows: AHI glass has developed a new type of glass light guide plate, called xcv, which is 20 times stronger than the existing light guide plate. Moisture will affect the heat strain speed and expansion speed of the light guide plate. Xvc is 8 times and 100 times better in these two aspects respectively. Since last year, Asahi Glass has provided LG with xcv light guide plate. The thickness of the light guide plate is only 1.8mm, which is suitable for large screen TVs

lg display plans to mass produce super large and ultra-thin LCD panels with Asahi Glass SCV light guide plate. These LCD panels have almost no frame and can be used in ultra-thin products, as well as high-end LCD TVs

in 2015, Corning launched iris glass light guide plate. It also cooperated with Japan SDP to launch 70 inch 4K LCD module prototype products. Corning explained that if iris is used to make LCD TV, the thickness can be reduced to 5mm

Samsung Electronics once launched a 65 inch UHD ultra-thin curved LCD prototype panel with a thickness of 4.9 mm, using Corning iris light guide plate. Although Samsung has not yet determined who to supply, since the middle of this year, Samsung has promoted new products to Chinese enterprises

in order to reduce the thickness, Samsung displays are coated with QD material on the glass light guide plate, and QD film is not used. This method also has defects. Samsung needs to use barrier film to protect QD materials from heat and moisture. In order to overcome the shortcomings, SamSung monitor is preparing to launch a product with better color expressiveness and higher brightness. Not only that, Samsung also integrates color light leakage film with QD to reduce the thickness

once Korean enterprises begin to supply LCD panels with glass light guide plates, the competition in the global high-end TV market will be more fierce, and TV manufacturers will compete to launch products with more unique designs

source: Tencent

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