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38.1: Optical Feedback for AMOLED Display Compensation using LTPS and a‐Si:H Technologies
Author(s) -
Fish David,
Young Nigel,
Deane Steve,
Steer Andrew,
George David,
Giraldo Andrea,
Lifka Herbert,
Gielkens Olaf,
Oepts Wouter
Publication year - 2005
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 - 10.1889/1.2036254
Subject(s) - oled , amoled , thin film transistor , compensation (psychology) , photodiode , materials science , electronic circuit , optoelectronics , electronic engineering , computer science , electrical engineering , engineering , active matrix , nanotechnology , psychology , layer (electronics) , psychoanalysis
Abstract New optical feedback pixel circuits for a‐Si:H and LTPS technologies will be presented. The circuits will enable correction of threshold voltage drift of the drive TFT and degradation of the OLED. In the a‐Si:H case this will be achieved with a standard a‐Si:H process and for LTPS an a‐Si NIP photodiode is integrated. Operation, technology and measurements will be presented.