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:
Dec. 14, 2004
Filed:
Feb. 01, 2002
Applicant:
Inventor:
Reiji Ono, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 3/10328 ; H01L 3/10336 ;
U.S. Cl.
CPC ...
H01L 3/10328 ; H01L 3/10336 ;
Abstract
A semiconductor light detecting device has a light absorbing layer; and a pn junction, carriers generated by the light absorbing layer absorbing the light in a light detecting region being detected as a photoelectric current through a depletion layer provided by applying a backward voltage to the pn junction, wherein the light detecting region in the light absorbing layer is all depleted in a slate where an operating voltage is applied.