The advantage of LED as a backlight source is that it can replace the use of color filter. The three-color RGB LED uses color sequential technology to achieve full-color effects by utilizing the characteristics of human vision persistence, so it can replace color filters. Of course, this must be achieved with the response speed of the liquid crystal. However, to reach this state, there are still many difficulties that must be overcome. The outstanding features of LED are high photoelectric conversion rate, high color saturation, small size, vibration resistance, no toxic substances, low-voltage power supply, human safety, long life and so on.
The LED backlight module is not without its shortcomings, and the problem of power consumption is still an important issue that the LED backlight module must overcome. Due to the use of more LEDs, in addition to the increase in power consumption, it also leads to the problem of temperature rise. Therefore, cooling systems and sensors must be added to solve this problem. Therefore, the thickness is thicker than that of products using CCFL backlights. .
Although LED backlight technology has many advantages, it also has unavoidable difficulties in popularization and application. First of all, products using this new technology are not yet competitive in price. Furthermore, LED technology is in the hands of a few manufacturers. Its popularity brings difficulties. Finally, it is the reason of the technology itself. LED backlight technology is not very good in luminous efficiency, current control and heat dissipation. From a long-term trend, LED backlight technology is an alternative. The existence of technical products will surely gradually spread, and according to relevant industry expectations, this large-scale application should be in 2008. Of course, with the rapid development of Samsung and LG's new panel technology, it may also be applied in a large area in advance.
Post time: Nov-17-2023