P‐19: Vth Shift Overcompensation in AMOLEDs for Differential Aging Compensation | Zendy

Miwa Koichi | Zendy; Maekawa Yuichi | Zendy; Tsujimura Takatoshi | Zendy

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P‐19: Vth Shift Overcompensation in AMOLEDs for Differential Aging Compensation

Author(s) -

Miwa Koichi,

Maekawa Yuichi,

Tsujimura Takatoshi

Publication year - 2009

Publication title -

sid symposium digest of technical papers

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.351

H-Index - 44

eISSN - 2168-0159

pISSN - 0097-966X

DOI - 10.1889/1.3256489

Subject(s) - amoled , compensation (psychology) , differential (mechanical device) , pixel , materials science , oled , thin film transistor , optoelectronics , physics , optics , composite material , psychology , layer (electronics) , active matrix , psychoanalysis , thermodynamics

AMOLED displays suffer from differential aging of pixels, leading to image burn‐in on a display. Vth shift ofa‐Si TFT can be utilized as a stress monitor of an OLED to compensate for differential aging. A Vth shift overcompensation pixel circuit is proposed and simulation results are provided. The simulation indicates that the Vth overcompensation improves burn‐in lifetime by a factor of 10 compared with a conventional Vth compensation.

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