Title :
Gamma Correction of Pulse Width Modulation With Current Uniformization for AM-OLEDs
Author :
Kimura, Mutsumi ; Suzuki, Daisuke ; Sawamura, Shigeki ; Kato, Masakazu ; Nishinohara, Daisuke
Author_Institution :
Dept. of Electron. & Inf., Ryukoku Univ., Otsu, Japan
fDate :
5/1/2012 12:00:00 AM
Abstract :
We consider gamma correction of pulse width modulation with current uniformization for AM-OLEDs and propose two correction methods, “quadratic data method” and “quadratic sweep method.” It is found that both methods can produce correct gamma curves, but the quadratic sweep method is superior from the viewpoint of image quality because it can suppress undesirable light emission at the lowest grayscale level.
Keywords :
amplitude modulation; light emitting diodes; pulse width modulation; AM-OLED; current uniformization; gamma correction; image quality; pulse width modulation; quadratic data method; quadratic sweep method; Awards activities; Educational institutions; Gray-scale; Instruments; Organic light emitting diodes; Pulse width modulation; Thin film transistors; Active-matrix organic light-emitting diode displays (AM-OLEDs); Gamma correction; current uniformization (CU); pulse width modulation (PWM); quadratic data method; quadratic sweep method;
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2011.2173294
