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P‐20: An AMOLED Pixel for the V T Compensation of TFT and a p‐Type LTPS Shift Register by Employing 1 Phase Clock Signal
Author(s) -
Jung SangHoon,
Shin HeeSun,
Lee JaeHoon,
Han MinKoo
Publication year - 2005
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 - 10.1889/1.2036430
Subject(s) - thin film transistor , amoled , shift register , materials science , signal (programming language) , transistor , electronic circuit , clock signal , optoelectronics , electronic engineering , voltage , electrical engineering , computer science , engineering , active matrix , layer (electronics) , composite material , programming language
A voltage modulated AMOLED pixel design using low temperature polycrystalline silicon thin film transistor (LTPS‐TFT) is proposed. The proposed pixel, which consists of 5 p‐type LTPS TFTs and 1‐capacitor, successfully suppressed the threshold voltage variation problem in LTPS TFTs and OLEDs. A new p‐type LTPS shift register employing only 1 clock signal is also proposed for the integration driving circuits. In order to eliminate the clock skew problem, only 1 phase clock signal is used in the proposed shift register. The proposed circuits were verified by simulation and experimental results.