Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2011-06-14
2011-06-14
Wang, Quan-Zhen (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
Reexamination Certificate
active
07961160
ABSTRACT:
A display device in which a current supplied to a light emitting element is corrected depending on a degradation level of the light emitting element and display variations due to the degradation of each light emitting element are suppressed. Further, according to the display device of the invention, the effect of variations in TFTs is reduced and writing time of a signal is shortened. To achieve the aforementioned display device, according to the invention, a current value supplied to a light emitting element is corrected in accordance with the degradation thereof instead of correcting a video signal. Further, the display device comprises at least a supply source for supplying a corrected current depending on the degradation of a light emitting element and a current source for supplying the corrected current from the supply source to the light emitting element. Moreover, according to such a display device, a first current source of the supply source supplies a corrected current corresponding to the degradation of the least degraded light emitting element of the light emitting elements connected to the same signal line, meanwhile a second current source supplies a corrected current corresponding to the degradation of the most degraded light emitting element of the light emitting elements connected to the same signal line.
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M.T. Johnson et al., “Active Matrix PolyLED Displays,” IDW '00, pp. 235-238.
Kimura Hajime
Koyama Jun
Abdin Shaheda A
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
Semiconductor Energy Laboratory Co,. Ltd.
Wang Quan-Zhen
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