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17.4: Low‐cost Method to Improve Viewing‐Angle Characteristics of Twisted‐Nematic Mode Liquid‐Crystal Displays
Author(s) -
Wright S. L.,
Greier P. F.
Publication year - 2002
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 - 10.1889/1.1830883
Subject(s) - halftone , pixel , luminance , viewing angle , liquid crystal display , optics , liquid crystal , computer vision , materials science , mode (computer interface) , artificial intelligence , tone (literature) , computer science , physics , art , literature , operating system
By processing pixel data, a low‐cost halftone method is proposed to improve viewing‐angle characteristics of TN‐mode TFTLCDs. The algorithm reduces the occurence of pixels in natural images with mid‐tone graylevels, preserving the local luminance. The improvement in viewing‐angle characteristics occurs with some loss of image detail. As the pixel density is increased, the halftone pattern becomes less noticeable.