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. 18, 1994
Filed:
Sep. 15, 1992
Miyo Miyashita, Itami, JP;
Takayuki Katoh, Itami, JP;
Teruyuki Shimura, Itami, JP;
Kazuhiko Nakahara, Itami, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An optoelectronic integrated circuit includes a light responsive element for converting an optical signal into an electrical signal and an electronic circuit for processing the electrical signal. The light responsive element is disposed on a first surface of a substrate and includes p side electrodes and n side electrodes alternatingly arranged parallel to each other. The electronic circuit is disposed on a second surface of the substrate. The light responsive element is electrically connected to the electronic circuit by a via hole penetrating the substrate. In this structure, light incident on the first surface is almost completely absorbed by the substrate and hardly reaches the electronic circuit on the second surface. Therefore, variations in operation of the electronic circuit, such as an increase in drain current, are reduced. In addition, since the degree of freedom in arranging these elements on both surfaces of the substrate is increased, high-density integration is achieved, resulting in a small-sized IC chip.