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A new pixel design and a novel driving scheme for multi‐domain vertically aligned LCDs
Author(s) -
Shih PoSheng,
Wang WeiHsin,
Pan HsuanLin,
Yang KeiHsiung
Publication year - 2007
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.2709735
Subject(s) - color gel , pixel , liquid crystal display , transmittance , materials science , thin film transistor , mode (computer interface) , filter (signal processing) , substrate (aquarium) , computer science , contrast ratio , optics , contrast (vision) , viewing angle , optoelectronics , electrode , lithography , computer vision , nanotechnology , physics , oceanography , layer (electronics) , quantum mechanics , geology , operating system
— By using a new pixel design and a novel driving scheme that adds a bias electrode and a bias TFT to the ordinary pixel structure, a high‐contrast‐ratio and wide‐viewing‐angle LCD mode, refered to as the biased vertical‐alignment (BVA) mode, has been sucessfully developed. Compared to the published data on the PVA and MVA modes, the BVA mode has a distinct advantage of lower manufacturing cost due to the elimination of a lithographic process step that forms either ITO cuts or protrusions on the color‐filter substrates. The BVA mode requires ITO cuts on the TFT substrate similar to that for the PVA and MVA modes. The 15‐in. BVA‐mode XGA prototype exhibits a high contrast ratio of 1200:1 and high cell transmittance of 4.3%.