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New pixel driving circuit using self‐discharging compensation method for high‐resolution OLED micro displays on a silicon backplane
Author(s) -
Kimura Kei,
Onoyama Yusuke,
Tanaka Taizo,
Toyomura Naobumi,
Kitagawa Hideyuki
Publication year - 2017
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 - 10.1002/jsid.540
Subject(s) - amoled , dot pitch , pixel , video graphics array , liquid crystal on silicon , backplane , oled , materials science , luminance , driver circuit , compensation (psychology) , computer science , optoelectronics , transistor , thin film transistor , voltage , electrical engineering , computer hardware , cmos , liquid crystal display , artificial intelligence , active matrix , psychology , layer (electronics) , psychoanalysis , composite material , engineering
Abstract A new 4T2C pixel circuit formed on a silicon substrate is proposed to realize a high‐resolution 7.8‐μm pixel pitch AMOLED microdisplay. In order to achieve high luminance uniformity, the pixel circuit compensates its Vth variation of the MOSFET for the driving transistor internally by using self‐discharging method. Also presented are 0.5‐in Quad‐VGA and 1.25‐in wide Quad‐XGA microdisplays with the proposed pixel circuit.