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54‐4: A 142‐in. IGZO‐TFT Glass‐Substrate AM MiniLED Tiled Display with External Compensation and Multilayer Demura Algorithm
Author(s) -
Huo Yingdong,
Liu Linfeng,
Liu Guohui,
Wang Zhenling,
Chang Tsung-Lung
Publication year - 2021
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.14792
Subject(s) - ntsc , backplane , gamut , thin film transistor , compensation (psychology) , liquid crystal display , luminance , diagonal , active matrix , viewing angle , computer science , flat panel display , crts , substrate (aquarium) , materials science , computer graphics (images) , optoelectronics , layer (electronics) , computer hardware , computer vision , telecommunications , mathematics , high definition television , psychology , geometry , psychoanalysis , composite material , oceanography , geology
A 142″ʺ active matrix miniLED tiled display with a pitch size of 1.6 mm has been developed by using IGZO TFT glass backplanes. In this work, a uniform threshold voltage(V th ) of the driving TFTs is optimized through external compensation; the tiled screen which is composed of 160 11‐inch panels is corrected by a multi‐layer demura algorithm and finally exhibits a uniform luminance and a wide color gamut characteristics as 90% and 113% in National Television System Committee (NTSC) 1931, respectively; every 11‐inch panel is bezel‐less, so the diagonal size and resolution of the tiled screen could be adjustable from 142″ʺ 2K to 568″ʺ8K.