DocumentCode :
835888
Title :
An Output Channel Nonuniformity Compensation Driving Method in Flat Panel Display Driving Circuits
Author :
Kim, Jin-Ho ; Ahn, Soon-Sung ; Kwon, Christine H. ; Kim, Seon-Yung ; Lee, Jae-Sic ; Choi, Byong-Deok
Author_Institution :
Inf. Display Res. Inst., Hanyang Univ., Seoul
Volume :
2
Issue :
4
fYear :
2006
Firstpage :
386
Lastpage :
392
Abstract :
Modern flat panel displays, including thin-film transistor liquid crystal displays (TFT-LCDs) and organic light-emitting diodes (OLEDs), pursue more and more natural color expression. This requires the data driving system should produce very fine and accurate signal voltages or currents. Especially, the uniformity among channels of a driving system is critically important because the color or luminance differences among columns are easily noticeable. We propose a simple and efficient driving method for solving the artifacts caused by the existing nonuniformity among channels of a driving system, and confirms its impact by simulations using C-programming. The nonuniformity among channels mostly stem from the random offset of the output circuits of a driving system, which in turn is caused by the process variations. The proposed driving method shares N-output circuits between N-output channels such that the existing offsets of the channels are averaged out. Thus, the output signal error due to the offsets spreads out among the channels, improving the uniformity between the channels
Keywords :
driver circuits; flat panel displays; C-programming; driving system; flat panel display driving circuits; output channel nonuniformity compensation driving method; output signal error; Circuits; Computer displays; Flat panel displays; Large screen displays; Liquid crystal displays; Organic light emitting diodes; Plasma displays; TV; Thin film transistors; Voltage; Flat panel display; driving system; offset; uniformity;
fLanguage :
English
Journal_Title :
Display Technology, Journal of
Publisher :
ieee
ISSN :
1551-319X
Type :
jour
DOI :
10.1109/JDT.2006.884695
Filename :
4016018
Link To Document :
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