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:
Oct. 27, 1981
Filed:
Dec. 29, 1978
Yoshihiro Mitsui, Shiojiri, JP;
Kabushiki Kaisha Suwa Seikosha, Tokyo, JP;
Abstract
A power supply for a liquid crystal display including a power source for delivering a voltage larger than the driving voltage of the display and a voltage regulator for adjusting the voltage applied to the display to that required to drive the display is provided. The liquid crystal display includes at least two plates having electrodes thereon in a liquid crystal material disposed between the plates. The voltage regulator has a temperature characteristic corresponding to that of a liquid crystal display wherein the driving voltage of the display decreases with an increase in temperature. The power supply allows use of batteries having inferior discharge characteristics and operating the display in the 1/4 duty-driving mode.