At present, LED backlight technology in the field of LCD TV is mainly used in three ways: straight down three primary color RGB-LED light source, straight down white LED light source and side type white LED light source. Direct-down RGB-LED light source technology in the comprehensive display advantage of the absolute first, but the price cost is also the highest, does not have the possibility of market popularity. At present, the market sales of LED TV is generally the use of straight-down white LED light source and side-into white LED light source products.
Samsung, SONY is using side-by-hand white LED technology, while Sharp, Hisense is the use of straight-down white LED technology. Straight down: Emphasize the excellent quality performance of the use of straight-down LED technology enterprises believe that the advantages of direct-down LED technology in the screen regulation to be excellent in the side of the LED technology, and the side of the LED TV price is inflated. Compared with the two ways, the straight-down performance of the picture quality is more perfect. Take the 55-inch LED TV as an example, the straight down product will be more than 3,000 LED lights evenly distributed in the back of the panel, so that the backlight can be evenly conveyed to the entire screen, the details of the picture more delicate and realistic. The lateral type is to install more than 400 LED lights at the border of the panel, so that the light source shines from the side.
This minimizes thickness, but reduces the number of LED lights by nearly 7 times times, making it easy to reduce the shape of the picture brightness (that is, four weeks brighter than the central position). In addition, the use of direct-down LED TV also divides the LED backlight into several cells, in the display of black, directly turn off its corresponding LED area of light, you can show a very perfect black.Therefore, the use of direct-down LED technology enterprises believe that the direct LED backlight can more accurately present the image, and show excellent color and light and dark contrast effect.