Pulsewidth Modulation With Current Uniformization for AM-OLEDs

被引：14

作者：

Kimura, Mutsumi ^{[1
]}

Suzuki, Daisuke ^{[1
]}

Koike, Masamichi ^{[1
]}

Sawamura, Shigeki ^{[1
]}

Kato, Masakazu ^{[1
]}

机构：

[1] Ryukoku Univ, Dept Elect & Informat, Otsu, Shiga 5202194, Japan

来源：

IEEE TRANSACTIONS ON ELECTRON DEVICES | 2010年 / 57卷 / 10期

关键词：

Active-matrix organic light-emitting diode display (AM-OLED); current uniformization; driving method; organic light-emitting diode (OLED); pulsewidth modulation; thin-film transistor (TFT); THIN-FILM TRANSISTORS; TIME-RATIO GRAYSCALE; POLY-SI TFTS;

D O I：

10.1109/TED.2010.2055871

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We propose a novel conception of driving methods, pulsewidth modulation with current uniformization, for active-matrix organic light-emitting diode displays (AM-OLEDs). This driving conception can simultaneously achieve precise grayscale and exceedingly improve luminance uniformity. We evaluate a concrete example, in which a pixel circuit includes seven transistors and a driving period consists of addressing-programming and light-emitting periods. The working and the tolerance against characteristic deviations of thin-film transistors and OLEDs are confirmed using circuit simulation and actual equivalent circuits.

引用

页码：2624 / 2630

页数：7

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