Earlier of this year, SAMSUNG promoted full-color LED LCD TV sets desperately. Many people felt surprised. Six months later, when the LED TV business rapidly popularized in the global market, competitions can only admired the predict and clever marketing of SAMSUNG. SAMSUNG’s endeavor contributed to the fast popularization of LED LCD TVs in the international market, since a new technological solution has been promoted during this time – white side-lighting LED TV.
As an upgraded version of CCFL (cold cathode fluorescent tube) backlight, LED backlight technology received high attention from Sony, Sharp and we Samsung since been promoted. In the meanwhile, the large enterprises invested heavily in research and development of technology to reduce costs. When Sony, Sharp concentrated on reducing production costs of RGB LED backlight technology, Samsung shifted their attention to develop white LED light sources, and meanwhile used side-lighting mode to take place of direct-lighting mode. Not perfect, but boosted the popularity of LED Tunnel Light LCD TV technology.
The high cost of RGB LED backlight technology hard to drop in short term. Any good technologies want to widely used, production cost reduction is the premise. Currently, LED became the most popular word in the TV market.
There are three major LED backlight technologies: direct-lighting RGB-LED source, direct-lighting white LED source, side-lighting white LED source. RGB LED backlight technology is the oldest one.
Compared with traditional CCFL backlight technology, RGB-LED TVs have more advanced capabilities in color performance and contrast. As a result of the independent RGB light-emitting components, the color gamut of RGB-LED TV sets can reach more than 120% of the NTSC. Some well-tuned models can even reach up to 150% of the color gamut, completely exceeds the level of plasma TVs.
In addition, RGB-LED TV sets can also support technical adjustment and brightness adjustment in the backlight area. Thus in the aspect of contrast, they are able to realize ten million dynamic contrast ratio, which plays a crucial role to enhance the image quality of televisions.
RGB LED backlight technology has obvious advantages, making Sony, Sharp and Samsung all spent a lot of money and energy on this part. These three TV giants promoted several related products based on RGB-LED technology, but with ridiculously high selling prices as a result of immature development. From the very beginning to now, after several years of development, RGB-LED did not realize an essential price dropping in production cost. Gradually, these companies reduced investment in the research and development of RGB-LED technology.