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. 19, 2007
Filed:
Aug. 14, 2006
Kazuya Endo, Higashimurayama, JP;
Naoki Miyamoto, Kodaira, JP;
Toshio Mizuno, Tokyo, JP;
Takayuki Nakaji, Tachikawa, JP;
Takatoshi Uchida, Kokubunji, JP;
Kazuo Ookado, Kokubunji, JP;
Yoshikazu Yokota, Kokubunji, JP;
Kazuya Endo, Higashimurayama, JP;
Naoki Miyamoto, Kodaira, JP;
Toshio Mizuno, Tokyo, JP;
Takayuki Nakaji, Tachikawa, JP;
Takatoshi Uchida, Kokubunji, JP;
Kazuo Ookado, Kokubunji, JP;
Yoshikazu Yokota, Kokubunji, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
There is to be provided a liquid crystal drive controller with a built-in power supply circuit wherein latch-up is made difficult to arise even if one amplitude level of the segment line drive voltage is set to the ground potential and the levels of other liquid crystal drive voltages are determined accordingly. A semiconductor integrated circuit with a built-in power supply circuit, wherein a negative voltage generated in a power supply circuit is applied to a substrate or a well region as a bias voltage, is provided with a switch for temporarily applying the ground potential to the substrate or well region to be biased with the negative voltage at the time of starting up the power supply circuit.