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Friday, May 13, 2011
Samsung Demonstrates PenTile RGBCW Multiprimary LCD with 2D RGB Local Dimming Backlight for Next-Gen HDTVs


At SID Display Week 2011 International Symposium May 17-19, Samsung will be exhibiting a first-of-its-kind technology developed with its affiliate Nouvoyance that blends three technologies to enhance ultra-low power High Definition TV (HDTV) display products while enabling power savings.

In this demonstration, frame sequential color (FSC), PenTile technology, and RGB local dimming have been combined to produce a TV display technology that features a wider array of colors, virtually eliminates color breakup, and operates at approximately 25 percent of the power of legacy LCD TV technology.

Samsung and Nouvoyance have been able to blend fixed color filters with clear subpixels of FSC using a PenTile RGBCW (red, green, blue, cyan, and white) color filter array. A 2D dimming RGB backlight has been highly localized to work in conjunction with the PenTile RGBCW array. The PenTile technology?s white (W) subpixels are clear and capable of crisply transmitting Red, Green, or Blue light from the backlight as needed in any given display zone. Samsung claims that color breakup is nearly eliminated when the color primaries are independently chosen for each zone to minimize field-to-field color excursions of the FSC display. Algorithms have been developed to analyze images, calculate gamut mapping, determine subpixel rendering and control the backlight. These techniques will be demonstrated for both still and video images.

For this technology demonstration, Samsung will use a 15.1-inch 816 x 490 LCD, but the panel can be readily scaled to larger sizes and finer resolutions, the copmpany added.


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