Display apparatus with luminance adjustment function

Details Display apparatus with luminance adjustment function Display apparatus with luminance adjustment function

2005-05-31

2005-05-31

Tran, Henry N. (Department: 2674)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S044000, C345S055000, C345S082000, C313S463000, C315S169300, C348S657000

Reexamination Certificate

active

06900784

ABSTRACT:
A display apparatus is capable of displaying an image at a proper luminance based on an input video signal without being influenced by temperature changes or time-dependent changes. The display apparatus is provided with a monitoring circuit constituted by a monitoring luminescent device, a reference current source of a reference drive current for causing the monitoring luminescent device to emit light at a luminance of K %, a transistor for supplying the reference drive current to the monitoring luminescent device, and a switch for connecting an output end of the reference drive current and a control end of the transistor. An input video signal is corrected to have a level according to the voltage value on the control end of the transistor driving the monitoring luminescent device when the luminance indicated by the video signal is K % of a maximum luminance level.

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