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:
Sep. 25, 2007
Filed:
Feb. 01, 2007
Katsumi Matsumoto, Mobara, JP;
Kozo Yasuda, Mobara, JP;
Hiroshi Kageyama, Hachioji, JP;
Hideo Sato, Hitachi, JP;
Toshio Miyazawa, Chiba, JP;
Katsumi Matsumoto, Mobara, JP;
Kozo Yasuda, Mobara, JP;
Hiroshi Kageyama, Hachioji, JP;
Hideo Sato, Hitachi, JP;
Toshio Miyazawa, Chiba, JP;
Hitachi Displays, Ltd., Chiba-ken, JP;
Abstract
An oscillator circuit includes (2n+1) inverters connected in series when n is a natural number, an integrator circuit having an input terminal connected to an output terminal of a (2n+1)-th inverter and an output terminal connected to an input terminal of a first inverter, first and second p-type transistors connected in series between the input terminal of the first inverter and a first reference potential, and first and second n-type transistors connected in series between the input terminal of the first inverter and a second reference potential. An output voltage of a j-th inverter is applied to control electrodes of the first p-type transistor and the first n-type transistor. An output voltage of a k-th inverter is applied to control-electrodes of the second p-type transistor and the second n-type transistor. Symbol j is an odd number, k is an even number, and j<k=2n is satisfied.