New pixel circuit to improve current uniformity for high-resolution AMOLED displays

Chih Lung Lin; Po Chun Lai; Ming Yang Deng

doi:10.1002/sdtp.10101

New pixel circuit to improve current uniformity for high-resolution AMOLED displays

Chih Lung Lin, Po Chun Lai, Ming Yang Deng

Department of Electrical Engineering

Research output: Contribution to journal › Conference article › peer-review

5 Citations (Scopus)

Abstract

This work presents a new pixel circuit based on low temperature polysilicon thin-film transistor (LTPS-TFT) for active-matrix organic light-emitting diode (AMOLED) displays. This circuit compensates for variations of threshold voltage (VTH) and mobility of TFTs and utilizes the parallel addressing scheme to extend the compensation time for ensuring the feasibility of application for high resolution displays. Based on the simulation results, the relative current error rates of proposed driving scheme are all lower than 2.1% for 0.5V VTH variations of TFTs and are all lower than 2.5% for 30% mobility variations of TFTs, showing effective compensation for variations of threshold voltage and mobility of TFTs.

Original language	English
Pages (from-to)	1297-1300
Number of pages	4
Journal	Digest of Technical Papers - SID International Symposium
Volume	46
Issue number	Book 3
DOIs	https://doi.org/10.1002/sdtp.10101
Publication status	Published - 2015 Jun 1
Event	2015 SID International Symposium - San Jose, United States Duration: 2015 Jun 4 → …

All Science Journal Classification (ASJC) codes

General Engineering

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10.1002/sdtp.10101

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title = "New pixel circuit to improve current uniformity for high-resolution AMOLED displays",

abstract = "This work presents a new pixel circuit based on low temperature polysilicon thin-film transistor (LTPS-TFT) for active-matrix organic light-emitting diode (AMOLED) displays. This circuit compensates for variations of threshold voltage (VTH) and mobility of TFTs and utilizes the parallel addressing scheme to extend the compensation time for ensuring the feasibility of application for high resolution displays. Based on the simulation results, the relative current error rates of proposed driving scheme are all lower than 2.1% for 0.5V VTH variations of TFTs and are all lower than 2.5% for 30% mobility variations of TFTs, showing effective compensation for variations of threshold voltage and mobility of TFTs.",

author = "Lin, {Chih Lung} and Lai, {Po Chun} and Deng, {Ming Yang}",

note = "Publisher Copyright: {\textcopyright} 2015 SID.; 2015 SID International Symposium ; Conference date: 04-06-2015",

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T1 - New pixel circuit to improve current uniformity for high-resolution AMOLED displays

AU - Lin, Chih Lung

AU - Lai, Po Chun

AU - Deng, Ming Yang

PY - 2015/6/1

Y1 - 2015/6/1

N2 - This work presents a new pixel circuit based on low temperature polysilicon thin-film transistor (LTPS-TFT) for active-matrix organic light-emitting diode (AMOLED) displays. This circuit compensates for variations of threshold voltage (VTH) and mobility of TFTs and utilizes the parallel addressing scheme to extend the compensation time for ensuring the feasibility of application for high resolution displays. Based on the simulation results, the relative current error rates of proposed driving scheme are all lower than 2.1% for 0.5V VTH variations of TFTs and are all lower than 2.5% for 30% mobility variations of TFTs, showing effective compensation for variations of threshold voltage and mobility of TFTs.

AB - This work presents a new pixel circuit based on low temperature polysilicon thin-film transistor (LTPS-TFT) for active-matrix organic light-emitting diode (AMOLED) displays. This circuit compensates for variations of threshold voltage (VTH) and mobility of TFTs and utilizes the parallel addressing scheme to extend the compensation time for ensuring the feasibility of application for high resolution displays. Based on the simulation results, the relative current error rates of proposed driving scheme are all lower than 2.1% for 0.5V VTH variations of TFTs and are all lower than 2.5% for 30% mobility variations of TFTs, showing effective compensation for variations of threshold voltage and mobility of TFTs.

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VL - 46

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JO - Digest of Technical Papers - SID International Symposium

JF - Digest of Technical Papers - SID International Symposium

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New pixel circuit to improve current uniformity for high-resolution AMOLED displays

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