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P‐68: Color‐Sequential TFT‐LCD with SAM (Shared Array Mask) Structure and Color breakup Reduction Schema
Author(s) -
KuanHung Liu,
JhenShen Liao,
YiNan Chu,
WenTse Tseng,
HongTien Yu
Publication year - 2007
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2785329
Subject(s) - gamut , rgb color model , backlight , computer science , computer vision , artificial intelligence , color depth , primary color , computer graphics (images) , liquid crystal display , pixel , high color , color balance , rgb color space , color difference , color image , image processing , image (mathematics) , operating system , filter (signal processing)
In a Color‐Sequential display, the three primary colors — red, green, and blue (RGB) are rendered in a time‐multiplexed fashion. Input frame image is decomposed into RGB sub‐frames, which are displayed sequentially at very short intervals such that the human eye cannot perceive the timing difference and the observer will see the original color of the image. Chunghwa Picture Tubes, LTD. (CPT) has successfully developed the 7 inches Color‐Sequential TFT‐LCD module. The main features of CPT Color‐Sequential display module include 800×480 resolution, TTL digital interface, fast response time with Optically Compensated Bend Type, wider color gamut and high color expression characteristic using LED backlight illuminated by the red, green, and blue accordingly. Furthermore, our Color‐Sequential display module has SAM (Shared Array Mask) structure that the panel circuit layout same as the commercial TFT‐LCD product, where a pixel consists of three sub‐pixels, it only needs to change the module design when applying the SAM structure, the manufacturing prime cost is reduced directly. We also invent the novel driving method with color breakup reduction schema to drive the Color‐Sequential display. The schema we applied is the way to control the width percentage of LED enable signal that the intermediate white color is inserted among the RGB periods to lighten the color breakup defect.