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:
Jun. 09, 1998
Filed:
Dec. 08, 1995
Nobuaki Koshobu, Kariya, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A scanning signal from a scanning electrode drive circuit and a data signal from a signal electrode drive circuit are applied to a liquid crystal panel to perform image display in the liquid crystal panel. Here, as well as power supply to the scanning electrode drive circuit and the signal electrode drive circuit being from separate power supply circuits, a voltage for producing a data signal in the liquid crystal drive voltage power supply circuit is generated with a central voltage of a liquid crystal drive voltage power supply circuit, which is for generating a voltage for producing the scanning signal, as a reference voltage. Because power is supplied separately to the scanning electrode drive circuit and the signal electrode drive circuit, the breakdown voltage of the signal electrode drive circuit is alleviated and thus power consumption is reduced, and further, flickering does not occur in the display, etc., even if there are fluctuations in the power supply voltage.