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Letter: A new compensation pixel circuit with metal oxide thin‐film transistors for active‐matrix organic light‐emitting diode displays
Author(s) -
Xia XingHeng,
Wu WeiJing,
Li GuanMing,
Zhou Lei,
Zhang LiRong,
Ning HongLong,
Xu Miao,
Wang Lei,
Peng JunBiao
Publication year - 2015
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.354
Subject(s) - active matrix , materials science , thin film transistor , optoelectronics , pixel , compensation (psychology) , transistor , diode , oled , electronic circuit , threshold voltage , light emitting diode , voltage , computer science , electrical engineering , nanotechnology , layer (electronics) , artificial intelligence , engineering , psychology , psychoanalysis
This paper presents a novel compensation pixel circuit for active‐matrix organic light‐emitting diode displays, in which the coupling effect mask technology is developed to compensate the threshold voltage of driving thin‐film transistor whether it is positive or negative. Twenty discrete compensation pixel circuits have been fabricated by In‐Zn‐O thin‐film transistors process. It is measured that the non‐uniformity of the proposed pixel circuit is significantly reduced with an average value of 8.6%. Furthermore, the organic light‐emitting diode emission current remains constant during 6 h continuous operation, which also confirms the validity of the proposed pixel circuit.