Using integrated optical feedback to counter pixel aging and stabilize light output of organic LED display technology

Jennifer Yu; Jonathan R. Tischler; Charles G. Sodini; Vladimir Bulović

doi:10.1109/jdt.2008.921771

Using integrated optical feedback to counter pixel aging and stabilize light output of organic LED display technology

Jennifer Yu, Jonathan R. Tischler, Charles G. Sodini, Vladimir Bulović

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

7 Scopus citations

Abstract

We define a metric of useful operating lifetime of an organic light-emitting device (OLED) display and relate it to the commonly measured half-life of constituent OLED pixels. We enumerate sources of OLED operational instability and propose an optical feedback solution in a novel integrated configuration to counter pixel aging and maintain stable light output across all of the pixels of an OLED display. Such optical feedback can correct pixel imperfections in both active matrix and passive matrix OLED displays. As an example, we analyze lifetime data previously published by Kwong et al. in 2002, and demonstrate that our optical feedback technique could maintain 100 cd/m ² display light output within a 2% brightness accuracy for more than 25 000 hours of continuous use for this specific OLED system. From this example we draw conclusions generally applicable to extending stable operating lifetime of other OLED structures.

Original language	English
Article number	4484937
Pages (from-to)	308-313
Number of pages	6
Journal	IEEE/OSA Journal of Display Technology
Volume	4
Issue number	3
DOIs	https://doi.org/10.1109/jdt.2008.921771
State	Published - Sep 2008
Externally published	Yes

Bibliographical note

Funding Information:
Manuscript received December 11, 2007; revised February 4, 2008. First published April 11, 2008; last published August 20, 2008 (projected). This work was supported in part by the Focus Center for Circuit & System Solutions (C2S2), one of five research centers funded under the Focus Center Research Program, a Semiconductor Research Corporation Program and the Presidential Early Career Award for Scientists and Engineers (PECASE).

Funding

Manuscript received December 11, 2007; revised February 4, 2008. First published April 11, 2008; last published August 20, 2008 (projected). This work was supported in part by the Focus Center for Circuit & System Solutions (C2S2), one of five research centers funded under the Focus Center Research Program, a Semiconductor Research Corporation Program and the Presidential Early Career Award for Scientists and Engineers (PECASE).

Funders	Funder number
Focus Center for Circuit & System Solutions	C2S2
Semiconductor Research Corporation Program

Keywords

Display
Half-life
Lifetime
Optical feedback
Organic LED (OLED)
Reliability
Stability

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10.1109/jdt.2008.921771

Cite this

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title = "Using integrated optical feedback to counter pixel aging and stabilize light output of organic LED display technology",

abstract = "We define a metric of useful operating lifetime of an organic light-emitting device (OLED) display and relate it to the commonly measured half-life of constituent OLED pixels. We enumerate sources of OLED operational instability and propose an optical feedback solution in a novel integrated configuration to counter pixel aging and maintain stable light output across all of the pixels of an OLED display. Such optical feedback can correct pixel imperfections in both active matrix and passive matrix OLED displays. As an example, we analyze lifetime data previously published by Kwong et al. in 2002, and demonstrate that our optical feedback technique could maintain 100 cd/m 2 display light output within a 2% brightness accuracy for more than 25 000 hours of continuous use for this specific OLED system. From this example we draw conclusions generally applicable to extending stable operating lifetime of other OLED structures.",

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author = "Jennifer Yu and Tischler, {Jonathan R.} and Sodini, {Charles G.} and Vladimir Bulovi{\'c}",

note = "Funding Information: Manuscript received December 11, 2007; revised February 4, 2008. First published April 11, 2008; last published August 20, 2008 (projected). This work was supported in part by the Focus Center for Circuit & System Solutions (C2S2), one of five research centers funded under the Focus Center Research Program, a Semiconductor Research Corporation Program and the Presidential Early Career Award for Scientists and Engineers (PECASE).",

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Using integrated optical feedback to counter pixel aging and stabilize light output of organic LED display technology

Abstract

Bibliographical note

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Keywords

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