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. 24, 2017
Filed:
Dec. 08, 2016
Applicant:
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;
Inventors:
Kiyoshi Kato, Sagamihara, JP;
Toshihiko Saito, Atsugi, JP;
Assignee:
Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken, JP;
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/36 (2006.01); G02F 1/1333 (2006.01); G02F 1/1368 (2006.01); G02F 1/1343 (2006.01); G02F 1/1345 (2006.01); G06F 3/044 (2006.01); G06F 3/041 (2006.01); H01L 27/12 (2006.01);
U.S. Cl.
CPC ...
G02F 1/13338 (2013.01); G02F 1/1368 (2013.01); G02F 1/13439 (2013.01); G02F 1/13454 (2013.01); G02F 1/133305 (2013.01); G02F 1/133345 (2013.01); G06F 3/044 (2013.01); G06F 3/0412 (2013.01); G09G 3/36 (2013.01); H01L 27/1218 (2013.01); G02F 2201/123 (2013.01);
Abstract
A variable capacitor is formed from a pair of electrodes and a dielectric interposed between the electrodes over a substrate, and an external input is detected by changing capacitance of the variable capacitor by a physical or electrical force. Specifically, a variable capacitor and a sense amplifier are provided over the same substrate, and the sense amplifier reads the change of capacitance of the variable capacitor and transmits a signal in accordance with the input to a control circuit.