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CPT develops display with RGBW technology

Posted: 21 Oct 2005     Print Version  Bookmark and Share

Keywords:cpt  chunghwa  qvga display  rgbw 

Taiwan display supplier Chunghwa Picture Tubes Ltd has developed a high-brightness, low-power 2.0-inch qVGA display utilizing Clairvoyante's PenTile RGBW technology.

According to Clairvoyante (Cupertino, Calif.) the amorphous silicon display uses half the power of RGB Stripe legacy designs. It is driven by the SW1605 PenTile inclusive driver chip from Clairvoyante licensee Silicon Works (Daejon, Korea).

Silicon Works' driver chip has the same interface as standard RGB Stripe smart driver ICs, but only requires two-thirds of the memory, and the single-chip design saves further board space, said Clairvoyante. By incorporating PenTile RGBW technology, one-third fewer data drivers are required; cutting the number of interconnects and frame buffer size by one-third.

Clairvoyante developed the PenTile Matrix technology using human vision system principles to produce cost-effective displays that consume less power and offer higher brightness at high visual resolution. PenTile RGBW technology adds a white subpixel to the conventional RGB subpixels in order to enhance luminance and color reproduction.

In addition, the benefits of PenTile-based LCDs can be realized without costly plant or process modifications.

- Spencer Chin

EE Times

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