A new pixel circuit compensating for brightness variation in large size and high resolution AMOLED displays

Hau Yan Lu; Ting Chang Chang; Ya-Hsiang Tai; Po-Tsun Liu; Sien Chi

doi:10.1109/JDT.2007.900921

A new pixel circuit compensating for brightness variation in large size and high resolution AMOLED displays

Hau Yan Lu^*, Ting Chang Chang, Ya-Hsiang Tai, Po-Tsun Liu, Sien Chi

^*Corresponding author for this work

Department of Photonics

Research output: Contribution to journal › Article › peer-review

52 Scopus citations

Abstract

A new pixel design and driving method for active-matrix organic light-emitting diode (AMOLED) display using low-temperature polycrystalline silicon thin-film transistor (LTPS-TFT) is proposed. The new circuit consists of five TFTs and one capacitor to eliminate the variation in the threshold voltage of the TFTs, and the drop in the supply voltage in a single frame operation. The proposed pixel circuit has been verified to realize uniform output current by the simulation work using HSPICE software. The simulated error rate of the output current is also discussed in this paper. The novel pixel design has great potential for use in large size and high resolution AMOLED displays.

Original language	English
Pages (from-to)	398-403
Number of pages	6
Journal	IEEE/OSA Journal of Display Technology
Volume	3
Issue number	4
DOIs	https://doi.org/10.1109/JDT.2007.900921
State	Published - Dec 2007

Keywords

Active-matrix organic light-emitting diode (AMOLED)
Currrent-resistance (I-R) drop
Pixel design
Poly-crystalline silicon thin-film transistors (poly-Si TFTs)
Uniformity

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10.1109/JDT.2007.900921

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abstract = "A new pixel design and driving method for active-matrix organic light-emitting diode (AMOLED) display using low-temperature polycrystalline silicon thin-film transistor (LTPS-TFT) is proposed. The new circuit consists of five TFTs and one capacitor to eliminate the variation in the threshold voltage of the TFTs, and the drop in the supply voltage in a single frame operation. The proposed pixel circuit has been verified to realize uniform output current by the simulation work using HSPICE software. The simulated error rate of the output current is also discussed in this paper. The novel pixel design has great potential for use in large size and high resolution AMOLED displays.",

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author = "Lu, {Hau Yan} and Chang, {Ting Chang} and Ya-Hsiang Tai and Po-Tsun Liu and Sien Chi",

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AU - Chang, Ting Chang

AU - Tai, Ya-Hsiang

AU - Liu, Po-Tsun

AU - Chi, Sien

PY - 2007/12

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A new pixel circuit compensating for brightness variation in large size and high resolution AMOLED displays

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Keywords

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