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P‐52: A New Current Programming Pixel Circuit for Compensating Luminance Degradation of AMOLED
Author(s) -
Lin ChihLung,
Hung ChiaChe,
Hsu ShengKai,
Chou KuanWen,
Tu ChunDa
Publication year - 2011
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 - 10.1889/1.3621072
Subject(s) - amoled , thin film transistor , luminance , oled , active matrix , materials science , optoelectronics , threshold voltage , pixel , diode , transistor , voltage , electrical engineering , computer science , engineering , artificial intelligence , nanotechnology , layer (electronics)
A new pixel circuit using low‐temperature polycrystalline‐silicon (LTPS) thin‐film transistors for Active Matrix Organic Light Emitting Diodes (AMOLEDs) is presented. The proposed current programming circuit without charging time problem at low gray level compensates for the threshold voltage variation of TFT as well as OLED luminance decay. The simulation results demonstrate driving current of this circuit is independent of the variation of TFT and maintain luminance for long term operation.