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P‐156: Distinguished Poster: Curved Vertical‐alignment Liquid Crystal Display with Uniform brightness: from Pixel Design to Verification
Author(s) -
Cao Jie,
Chen Jianhong,
Du Peng,
Ying Jianjian,
Huang Tien-Chun,
Chen Lixuan,
Zhao Bin,
Zhang Xin
Publication year - 2020
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 - 10.1002/sdtp.14299
Subject(s) - liquid crystal display , brightness , liquid crystal , curvature , materials science , optics , viewing angle , bending , flat panel display , flat panel , pixel , optoelectronics , physics , geometry , composite material , mathematics
Curved liquid crystal displays (LCD) suffers from an issue of uneven brightness among the vertical‐alignment (VA) LCD panels based on thin glass substrates. In this work, we investigared its origin through optical simulation and successfully realized uniform brilliance for 27‐inch curved LCD panels. The optical simulation revealed that the dark areas on the bending sides of the curved LCD panel originated from the reduced azimuth angle of the liquid crystals (LC) next to the ITO trunk. This issue could be resolved by decreasing the pretilt angle of the LC on the color filter (CF) side. Through developing pretilt angle tuning (PAT) technologies, we experimentally verified that the uniform brilliance could be achieved for 27‐inch curved LCD panels with 900‐mm curvature on thin glass substrates.