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. 15, 1999
Filed:
Feb. 28, 1995
Masafumi Hoshino, Chiba, JP;
Shuhei Yamamoto, Chiba, JP;
Hiroyuki Fujita, Chiba, JP;
Hirotomo Oniwa, Chiba, JP;
Kentaro Yagi, Chiba, JP;
Fujio Matsu, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
A display device includes a liquid crystal panel, a controller, a common driver and a segment driver. The common driver is powered by a high power supply voltage and outputs row driving waveforms having predetermined voltage levels, which are relatively high. The segment driver is powered by a low power supply voltage and outputs column driving waveforms having predetermined voltage levels, which are relatively low. By this construction, it is not necessary for both the segment and common drivers to be high withstand voltage integrated circuit devices.