Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2007-12-11
2007-12-11
Dinh, Duc (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S076000, C315S169300
Reexamination Certificate
active
10428831
ABSTRACT:
To provide a passive self-luminous device having a function for correcting a degradation of a light emitting element, which is capable of performing display with uniformity across a screen without occurrence of brightness variance. A counter counts an accumulated illumination time or an accumulated illumination time and illumination intensity in each pixel using a first image signal to store the count result in a volatile memory or a non-volatile memory. In a correction circuit, from the accumulated illumination time or the accumulated illumination time and illumination intensity, the first image signal is corrected according to a degree of degradation of each light emitting element based on correction data stored in advance in a correction data storage unit, to obtain a second image signal. With the second image signal, it is possible to eliminate the brightness variance and obtain a display with a uniformity across the screen in a display device, even when a light emitting element in a portion of pixels is degraded.
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Koyama Jun
Osame Mitsuaki
Costellia Jeffrey L.
Dinh Duc
Semiconductor Energy Laboratory Co,. Ltd.
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