A new organic TFT based current programmed pixel circuit for driving active-matrix OLEDs

Sang Jun Hwang; Aram Shin; Yohan Kim; Man Young Sung

A new organic TFT based current programmed pixel circuit for driving active-matrix OLEDs

Sang Jun Hwang, Aram Shin, Yohan Kim, Man Young Sung

* Honorary professors

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A new current-driving pixel circuit for active-matrix organic light-emitting diodes (AMOLEDs), composed of four organic thin-film transistors (OTFTs) and one capacitor, is proposed using a current scaling method. Designing pixel circuits with OTFTs has many problems due to the instability of the OTFT parameters with the material characteristics still unknown. Despite the problems in using OTFTs to drive the pixel circuit, our work could be set as a goal for future OTFT development. The simulation results show enhanced reliability between the OTFT parameters with improved linearity between input data and OLED luminescence at low current levels. Also, large variation of OTFT parameters such as threshold voltage and mobility was successfully compensated to reliable values.

Original language	English
Title of host publication	AD'07 - Proceedings of Asia Display 2007
Pages	1499-1503
Number of pages	5
Publication status	Published - 2007
Event	Asia Display 2007, AD'07 - Shanghai, China Duration: 2007 Mar 12 → 2007 Mar 16

Publication series

Name	AD'07 - Proceedings of Asia Display 2007
Volume	2

Other

Other	Asia Display 2007, AD'07
Country/Territory	China
City	Shanghai
Period	07/3/12 → 07/3/16

Keywords

Active-matrix
Organic light-emitting diode (OLED)
Organic thin-film transistor (OTFT)
Pixel circuit

ASJC Scopus subject areas

Hardware and Architecture
Electrical and Electronic Engineering

Cite this

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title = "A new organic TFT based current programmed pixel circuit for driving active-matrix OLEDs",

abstract = "A new current-driving pixel circuit for active-matrix organic light-emitting diodes (AMOLEDs), composed of four organic thin-film transistors (OTFTs) and one capacitor, is proposed using a current scaling method. Designing pixel circuits with OTFTs has many problems due to the instability of the OTFT parameters with the material characteristics still unknown. Despite the problems in using OTFTs to drive the pixel circuit, our work could be set as a goal for future OTFT development. The simulation results show enhanced reliability between the OTFT parameters with improved linearity between input data and OLED luminescence at low current levels. Also, large variation of OTFT parameters such as threshold voltage and mobility was successfully compensated to reliable values.",

keywords = "Active-matrix, Organic light-emitting diode (OLED), Organic thin-film transistor (OTFT), Pixel circuit",

author = "Hwang, {Sang Jun} and Aram Shin and Yohan Kim and Sung, {Man Young}",

year = "2007",

language = "English",

isbn = "9787561752289",

series = "AD'07 - Proceedings of Asia Display 2007",

pages = "1499--1503",

booktitle = "AD'07 - Proceedings of Asia Display 2007",

note = "Asia Display 2007, AD'07 ; Conference date: 12-03-2007 Through 16-03-2007",

}

TY - GEN

T1 - A new organic TFT based current programmed pixel circuit for driving active-matrix OLEDs

AU - Hwang, Sang Jun

AU - Shin, Aram

AU - Kim, Yohan

AU - Sung, Man Young

PY - 2007

Y1 - 2007

N2 - A new current-driving pixel circuit for active-matrix organic light-emitting diodes (AMOLEDs), composed of four organic thin-film transistors (OTFTs) and one capacitor, is proposed using a current scaling method. Designing pixel circuits with OTFTs has many problems due to the instability of the OTFT parameters with the material characteristics still unknown. Despite the problems in using OTFTs to drive the pixel circuit, our work could be set as a goal for future OTFT development. The simulation results show enhanced reliability between the OTFT parameters with improved linearity between input data and OLED luminescence at low current levels. Also, large variation of OTFT parameters such as threshold voltage and mobility was successfully compensated to reliable values.

AB - A new current-driving pixel circuit for active-matrix organic light-emitting diodes (AMOLEDs), composed of four organic thin-film transistors (OTFTs) and one capacitor, is proposed using a current scaling method. Designing pixel circuits with OTFTs has many problems due to the instability of the OTFT parameters with the material characteristics still unknown. Despite the problems in using OTFTs to drive the pixel circuit, our work could be set as a goal for future OTFT development. The simulation results show enhanced reliability between the OTFT parameters with improved linearity between input data and OLED luminescence at low current levels. Also, large variation of OTFT parameters such as threshold voltage and mobility was successfully compensated to reliable values.

KW - Active-matrix

KW - Organic light-emitting diode (OLED)

KW - Organic thin-film transistor (OTFT)

KW - Pixel circuit

UR - http://www.scopus.com/inward/record.url?scp=77958071600&partnerID=8YFLogxK

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M3 - Conference contribution

AN - SCOPUS:77958071600

SN - 9787561752289

T3 - AD'07 - Proceedings of Asia Display 2007

SP - 1499

EP - 1503

BT - AD'07 - Proceedings of Asia Display 2007

T2 - Asia Display 2007, AD'07

Y2 - 12 March 2007 through 16 March 2007

ER -

A new organic TFT based current programmed pixel circuit for driving active-matrix OLEDs

Abstract

Publication series

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Keywords

ASJC Scopus subject areas

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