The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 01, 2003
Filed:
Apr. 07, 2000
Hiromasa Kanno, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
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.