A New Low Temperature Polycrystalline Silicon Thin Film Transistor Pixel Circuit for Active Matrix Organic Light Emitting Diode

被引：5
|
作者：
Fan, Ching-Lin [1 ,2 ]
Lin, Yi-Yan [1 ]
Chang, Jyu-Yu [1 ]
Sun, Bo-Jhang [2 ]
Liu, Yan-Wei [1 ]
机构：
[1] Natl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei 106, Taiwan
[2] Natl Taiwan Univ Sci & Technol, Grad Inst Electroopt Engn, Taipei 106, Taiwan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2010年 / 49卷 / 06期
关键词：
BRIGHTNESS UNIFORMITY; TFT PIXEL; COMPENSATION;
D O I：
10.1143/JJAP.49.064201
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
This study presents one novel compensation pixel design and driving method for active matrix organic light-emitting diode (AMOLED) displays that use low-temperature polycrystalline silicon thin-film transistors (LTPS-TFTs) with a voltage feed-back method and the simulation results are proposed and verified by SPICE simulator. The measurement and simulation of LTPS TFT characteristics demonstrate the good fitting result. The proposed circuit consists of four TFTs and two capacitors with an additional signal line. The error rates of OLED anode voltage variation are below 0.3% under the threshold voltage deviation of driving TFT (Delta V-TH = +/- 0.33 V). The simulation results show that the pixel design can improve the display image non-uniformity by compensating the threshold voltage deviation of driving TFT and the degradation of OLED threshold voltage at the same time. (C) 2010 The Japan Society of Applied Physics
引用
收藏
页码：0642011 / 0642015
页数：5
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