Matrix type display apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 1, 2003
Grant Date -
N/A
app pub date -
Apr 7, 2000
filing date -
Oct 8, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A matrix type display apparatus such as a liquid crystal display is provided which has a simple circuit structure and is capable of enlarging the display of a screen. A shift section is provided with 1024 FF (flip-flop) circuits. When enlarged display mode is designated by a mode signal MOD, one FF circuit is connected in parallel to two FF circuits via a switch SW (an analog switch). Accordingly, R, G, B data for 640 pixels is increased to 960 display voltages and fed to the Y electrodes of a liquid crystal panel. A shift section is provided with 768 FF (flip-flop) circuits. When enlarged display mode is designated, one FF circuit is connected in parallel to two FF circuits via a switch SW. Accordingly, scan voltages for 720 lines are generated from the scan signals of 480 lines and fed to the X electrodes of a liquid crystal panel. Accordingly, a screen display is enlarged vertically and horizontally by a factor of 1.5.
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