Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2011-05-31
2011-05-31
Osorio, Ricardo L (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S204000
Reexamination Certificate
active
07952541
ABSTRACT:
A driving method that does not allow a change in temperature of the surroundings to change the luminance of a light emitting element of a pixel is provided for a display device with less uneven display, higher gradation, and reduced power consumption. A time ratio gradation driving method is applied to a pixel that is structured to have a current mirror circuit and use a current drive method. The bit number of digital video signals to be sampled by a source signal line driving circuit is reduced with the use of a switching signal, thereby saving the power consumption when high gradation display is not necessary.
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Fish & Richardson P.C.
Osorio Ricardo L
Semiconductor Energy Laboratory Co,. Ltd.
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