54‐4: A 142‐in. IGZO‐TFT Glass‐Substrate AM MiniLED Tiled Display with External Compensation and Multilayer Demura Algorithm

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(Vth) of the driving TFTs is optimized through external compensation; the tiled screen which is composed of 160 11‐inch panels is co...

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Bibliographic Details
Published in:SID International Symposium Digest of technical papers 2021-05, Vol.52 (1), p.753-756
Main Authors: Huo, Yingdong, Liu, Linfeng, Liu, Guohui, Wang, Zhenling, Chang, Tsung-Lung
Format: Article
Language:English
Subjects:
Active matrix
Algorithms
Backplanes
Compensation
Glass Backplane
Glass substrates
IGZO TFT
Indium gallium zinc oxide
miniLED
Multilayers
Threshold voltage
tiled display
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Summary: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(Vth) 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.
ISSN:0097-966X
2168-0159
DOI:10.1002/sdtp.14792