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Samsung unveils world's largest LCD panel without color filter

Posted: 13 Oct 2005 ?? ?Print Version ?Bookmark and Share

Keywords:lcd? liquid crystal display? panel array? tft lcd?

Samsung revealed the development of the largest thin-film transistor, liquid crystal display (TFT-LCD) panel that does not require the use of color filter. The 32-inch LCD panel uses a sequential color processing method that rapidly determines accurate color tones based on how long red, green and blue (RGB) lights are from the LED backlight.

Compared to conventional LCDs that require both cold cathode fluorescent backlight (CCFL) and color filter to separate the white light eliminated by the backlight into RGB sup-pixels, the pixels of the new LCD are not spatially arranged eliminating the need for a color filter.

Seongsik Shin, vice president of the Samsung Electronics LCD R&D Center said, "With the less independent development of the color filter-less LCD, Samsung is able to produce the highest quality LCD panels at a lower cost. This further improves our market leadership position for high-definition LCD TVs of 32, 40" and 46" industry-standard screen sizes." He added that the new technology will reduce the investment cost for new facilities, shorten production times and increase production yields.

Samsung Electronics' LCD R&D team used a novel RGB-emitting LCD backlight to achieve the "sequential" display. The new LCD panel provides color saturation that is 110% of the NTSC standard, while the aperture ratio is an exceptionally high 78% for television with brightness at 500nit.

In addition, the new display panel consumes only 82 watts, just 60% of the power needed by a conventional 500nit in CCFL backlight. Also, its response time is 5ms or faster, suited for multimedia and video applications, which require accurate color reproduction.

The new filter-less 32" TFT-LCD for TV applications will be showcased at the Flat Panel Display International 2005 at Yokohama, Japan on October 19. Mass production is scheduled in the second half of 2006.





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