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:
Dec. 30, 1980
Filed:
Sep. 13, 1978
Shinji Morozumi, Suwa, JP;
Yoshio Yamazaki, Suwa, JP;
Tatsushi Asakawa, Suwa, JP;
Yasunori Nakazaki, Suwa, JP;
Kabushiki Kaisha Suwa Seikosha, Tokyo, JP;
Abstract
A liquid crystal display driving circuit arrangement that is formed entirely of elements that can be monolithically integrated in a circuit chip and that adjusts the effective voltage of the drive signals applied to the liquid crystal display cells in response to variations in external conditions is provided. A sensing circuit is adapted to produce a signal representative of a change in an external condition and in response thereto produce a sensing signal representative thereof. A pulse control circuit is adapted to detect the condition signal and in response thereto produce a control signal representative of a variation in effective voltage to be applied to the display cells. A driving circuit is coupled to a liquid crystal display for applying drive signals produced by display control circuit having a variable effective voltage. The driving circuit is adapted to vary the effective voltage of the drive signals applied to the liquid crystal digital display cells by an amount determined by the control signal applied thereto.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile