Improvement of uniformity in active-matrix light-emitting diodes
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概要
- 論文の詳細を見る
An approach to improve the drive-current uniformity of the low-temperature POly-Si(LTPS)thin film transistors (TFTs)applied to active-matrix organic light-emitting diodes(AMOLED)device was investigated. The non-uniformity feature of LTPS-TFTs is due to the fact that the grain boundaries and sizes of poly-Si are nearly non-controllable during the laser annealing process. In order to obtain the better uniformity of drive current and performance of gray-scale linearity for AMOLED pixels, we suggest that a resistor connected serially to the source terminal of the drive TFT should improve the non-uniformity feature dramatically. Alter measuring the I-V characteristics, a simulation process based on the basic circuit theory was proceeded to calculate the characteristics with a serially connected resistor. The calculated results revealed that the maximum current Variation could be changed from 45%(without a resistor)to 10%(with a serially connected resistor)when the threshold voltage of drive TFT varies 0.3V.
- 社団法人電子情報通信学会の論文
- 2000-10-13
著者
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Wang Wen-chun
Novel Display Technology Development Division
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Wang Wen-chun
Electronic Research & Service Organization
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Chuang F‐y
Novel Display Technology Development Division
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Han Cheng-xian
Industrial Technology Research Institute Hsinchu Taiwan R. O. C.
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CHUANG Feng-Yu
Electronic Research & Service Organization, ITRI
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Chuang Feng-Yu
Industrial Technology Research Institute
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Han Cheng-Xian
Electronic Research & Service Organization
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Yeh Yung-Hui
Electronic Research & Service Organization
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Sheu Chai-Yuan
Electronic Research & Service Organization
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Yang Heng-Long
Electronic Research & Service Organization
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Ni Fens-Chou
Industrial Technology Research Institute, Hsinchu, Taiwan, R. O. C.
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Cheng Hua-chi
Industrial Technology Research Institule
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Yeh Yung-hui
Electronic Research & Service Organization
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Ni Fens-chou
Industrial Technology Research Institute Hsinchu Taiwan R. O. C.
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Yang Heng-long
Electronic Research & Service Organization
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Sheu Chai-yuan
Electronic Research & Service Organization
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Ni Fens-chou
Electronic Research & Service Organization/industrial Technology Research Institute Hsinchu Taiw
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