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. 29, 2024
Filed:
Feb. 03, 2023
Applicant:
Primax Electronics Ltd., Taipei, TW;
Inventor:
Lei-Lung Tsai, Taipei, TW;
Assignee:
Primax Electronics Ltd., Taipei, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01H 13/703 (2006.01); H01H 13/7073 (2006.01);
U.S. Cl.
CPC ...
H01H 13/703 (2013.01); H01H 13/7073 (2013.01); H01H 2233/07 (2013.01);
Abstract
A membrane switch includes a first conductive pattern, a second conductive pattern and a processor. The first circuit layer is aligned with the second conductive pattern. The first conductive pattern and the second conductive pattern have different shapes. When the second conductive pattern is contacted with and covered by the first conductive pattern, a conductive contact surface is formed. The conductive contact surface has a resistance value corresponding to an area of the conductive contact surface. A processor judges whether a key signal is generated according to the resistance value.