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:
Jun. 10, 2014
Filed:
Mar. 23, 2011
Applicants:
Fumiyasu Utsunomiya, Chiba, JP;
Taro Yamasaki, Chiba, JP;
Isamu Fujii, Chiba, JP;
Inventors:
Assignee:
Seiko Instruments Inc., Chiba-Shi, Chiba, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 27/00 (2006.01); H01L 31/00 (2006.01); H04N 7/18 (2006.01); G03B 17/00 (2006.01); H01L 27/088 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided is a proximity sensor using a photosensor, which is easy to use and reduced in power consumption. In the proximity sensor, a first photosensor is used to detect a change in amount of ambient light entering the first photosensor, which is caused when a finger is coming close thereto, and a detection signal is output based on a result of the detection. The photosensor includes, for example, one or a plurality of PN junction elements connected in parallel.