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:
Jul. 11, 2000
Filed:
Jun. 07, 1995
Jun Ohta, Amagasaki, JP;
Masaya Oita, Amagasaki, JP;
Yoshikazu Nitta, Amagasaki, JP;
Kunihiko Hara, Amagasaki, JP;
Takashi Toyoda, Amagasaki, JP;
Eiichi Funatsu, Amagasaki, JP;
Yasunari Miyake, Amagasaki, JP;
Syuichi Tai, Amagasaki, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A photodetector device for converting incident light to an electrical signal has two pn junctions or two MOS junctions fabricated in a silicon substrate. Preferably, a control terminal is provided between the two junctions. A photodetection circuit including a photodetector device has a variable sensitivity and can change the polarity of the output of the photodetector device. For example, the photodetection circuits may have a circuit for providing a bias voltage of one of the two polarities to the photodetector device. The photodetection circuit may have a circuit for changing the polarity of the output signal from the photodetector device.