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:
Aug. 26, 1997
Filed:
Jan. 23, 1996
Applicant:
Inventors:
Taro Itatani, Tsukuba, JP;
Kazuhiko Matsumoto, Tsukuba, JP;
Masami Ishii, Tsukuba, JP;
Tadashi Nakagawa, Tsukuba, JP;
Yoshinobu Sugiyama, Tsukuba, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257432 ; 257436 ; 385130 ;
Abstract
A high-speed, high-sensitivity photo-receiving device has a light-absorbing substrate, on which a pair of electrodes are provided. An insulative optical guide is located over an exposed surface portion of the substrate constituting an optical window. The optical guide is permeable to incident light, and the width of the optical guide does not exceed the wavelength of the incident light.