Edge-lit backlight development
  With the continuous development of technology, the side-side LED backlight will develop from a single LED at the top and bottom to a single LED at the end. The 32" two-end single LED backlight TVs that are usually seen in the market use about 120 to 150 LEDs. If the TV backlight is replaced by a single-sided single LED, the number of LEDs can be reduced to 80-100 (it can be reduced after all The number of LEDs is determined by brand skills). If the skills can be cooperated, in the foreseeable future, a single LED will be turned from the long side (up or down) to the short side (left or right). Such a change will use less LED Number of particles.

Life extension
     Reducing the use of LEDs not only has a positive effect on cost control, but we also see other positive effects on modules. For example, the temperature of the module will be reduced by using less LEDs. If we take the above 32” LCD TV as an example, reducing the number of LEDs can probably reduce the module temperature by 10%-15%. Although we cannot scientifically calculate how much this number can extend the lifespan of electronic components and even TVs, Generally speaking, temperature reduction must have a positive effect on the life of electronic parts. This assistance is more significant in larger area LED backlight TVs, because there are fewer LEDs that are relatively infrequently used.

Wider viewing angle
    In addition, the use of high-performance brightness enhancement film solutions also play a positive role in the TV viewing angle. Because the technical principle of the high-efficiency brightness enhancement film is to make the polarized light reflect in the backlight module until it penetrates the glass. The backlight module that uses the brightness enhancement film improves the brightness by about 30% compared with the module that does not usually use the optical film. Because the high-efficiency brightness enhancement film is different from the usual prism film, it does not need to sacrifice the viewing angle to increase the brightness, so such a high-efficiency brightness enhancement film is very much expected by domestic and foreign TV manufacturers. The area of LCD TV is getting bigger and bigger, and consumers are beginning to have certain requests for viewing angle. A 47” LCD TV with over 10,000 inches is placed in the center of the living room. Of course, the head of the household hopes that guests sitting at any point of view can enjoy the same quality TV screen.

Energy saving
    Of course, the masses can most directly experience the advantages of edge-lit LED backlights, that is, the overall energy consumption of the TV decreases. Generally, 32" LED backlight TVs usually consume 80W at the current level. This level is equivalent to level 3 in the country’s latest power efficiency specifications.

     If manufacturers want to improve TV energy consumption specifications, there are many corresponding solutions, but the use of high-efficiency brightness enhancement film should be the simplest and direct and effective way to improve energy consumption. If we cooperate with high-performance brightening film, the energy consumption can be reduced by about 20%-30% under the same brightness level (after all, it depends on the skills of each brand). From a numerical calculation, the energy consumption of the TV can basically be improved from 80W to 60W through the high-performance brightening film. The improvement of energy consumption not only allows manufacturers to cooperate vigorously with the national environmental protection policy, but also slightly assists consumers in related electricity bills.

    From the above technical analysis, we can see that the edge-lit backlight design has great advantages for manufacturers and consumers. In the near future, edge-lit single-sided single LEDs must be the ultimate destination of LED backlights.

    The side-light type is also called side-in type, and its biggest disadvantage is that it cannot be partially dimmed. Because the LED lights are gathered on the edge of the TV, the light must be uniformly output to the TV screen by the light guide plate. Therefore, it is difficult to adjust the brightness of a certain area of the screen. The direct type, because a certain part of the LED switch can be completed by the LED driver chip, so the advantage of partial dimming is significant. As a result, a new partially dimmable matrix backlight plan that links the advantages of direct and side-by-side technologies has emerged, and has become a key research direction for backlight manufacturers.

    The side-light type is also called side-in type, and its biggest disadvantage is that it cannot be partially dimmed. Because the LED lights are gathered on the edge of the TV, the light must be uniformly output to the TV screen by the light guide plate. Therefore, it is difficult to adjust the brightness of a certain area of the screen. And the direct type, because a certain part of the LED switch can be realized through the LED driver chip, so the partial dimming advantage is significant. As a result, a new partially dimmable matrix backlight plan that combines the strengths of direct-down and side-in technologies has emerged, and has become a key research direction for backlight manufacturers.