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Study on Driving Circuit of Organic Light Emitting Display

Author: GuoYingYing
Tutor: LiRongYu
School: Shanghai Jiaotong University
Course: Electromagnetic Field and Microwave Technology
Keywords: OLED Grayscale The pixel drive circuit TFT Hspice AMOLED
CLC: TN873.3
Type: Master's thesis
Year: 2009
Downloads: 106
Quote: 0
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Abstract


Since the organic light-emitting diode OLED in 1979 , research organizations around the world have been it . With further research , the OLED light emitting devices gradually variety of display devices for mass production . Sony , Samsung Display Devices manufacturers large-screen OLED displays , and gradually expand the applications of OLED , Tsinghua University, China 's researchers OLED for the aerospace industry . The article is in the context of this study , the organic light emitting display . This paper studies the OLED gray programs, as well as the OLED pixel circuits . Area ratio on the basis of the existing gradation program gradation ratio of the gradation of the current implementations, can be found by comparison with the area ratio grayscale This gradation method can achieve a more level gradation . The subfield ratio grayscale implementation of the simulation, In this paper, the 4-TFT AMOLED pixel circuit simulation circuit simulation using Hspice software to achieve 4-TFT AMOLED sub-field gray . Taking into account a 2-TFT AMOLED pixel drive circuit , changes in the threshold voltage of the flowing through the OLED current impact, and a voltage driving method difficult to achieve accurate gradation control , this paper presents the 4 - TFT of the pixel driving circuit , simulation prove the circuit solves the above problems in the 2 - TFT the AMOLED pixel drive circuit .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Terminal equipment > Display device,the display > Electroluminescent display
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