LED TV backlight structure simplified in 2012 may unilateral light

Led import LCD TV LCD TV trend is clear, at present each big brand, system and component suppliers are actively developing backlight design more cost-effective, hoping to accelerate the popularization of LED backlight LCD tv. In 2009 LED TV side light type backlight design, structure with up and down about a total of 6 LED light bar design, but this year the side light type LED backlight TV, the backlight structure has been reduced to the upper and lower sides of a total of 4 LED light bar design. Manufacturers may further launch next year, both sides only in the panel around the 1 LED light bar light backlight design, 2012 TV may even into unilateral light.

At present, LED backlight LCD TV, the main backlight structure is divided into direct backlight design and side light backlight design. Direct type backlight design early with RGB trichrome LED, but the cost is high, then the use of white LED (add fluorescent powder in the blue chip harmonic) as back light source, white LED is used to design the backlight. Side light backlight design due to the use of the number of LED significantly reduced, mainly through the light guide light guide, so that the light evenly distributed, the most cost-effective.

According to the manufacturer's data, in 2009 the side light type TV backlight structure mainly adopts the above two LED light bar, two LED light bar, both sides of the 1 LED light bar, total design above and below there are 6 LED light bar, luminous efficiency of LED by the use of ca. 52 lm/ W. In the continuous reduction of cost considerations, in 2010 to develop only by the above two LED light bar, two LED light bar, a total of 4 sides of root LED light bar backlight design. The use of LED luminous efficiency up to 62 lm/W, but the amount of LED is reduced by 20%-25%.

It is reported that LED manufacturers are continuing to cooperate with customers, toward the direction of the development of simplified LED backlight structure. Is the fastest in the next year (2011), the market will appear only in the right and left sides using 1 LED light about bar light (about luminescent backlight design new models). After 2012, may even be launched only by unilateral light (luminescence), also refers to the TV panel on the left side, or on the right side, a new kind of backlight design using only 1 LED light bar.

With the backlight structure is becoming more and more simplified, the number of LED used less and less, LED industry stressed that the application of the TV backlight LED, the size of the larger and larger will also become an inevitable trend. The larger the size of the LED, the greater the current through the heat dissipation is more important. Because the heat will not only affect the reliability, but also will cause the luminous efficiency decreased, especially the greater the power of the LED heating effect is more obvious.