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:
Apr. 21, 2020
Filed:
Apr. 02, 2019
Chicony Electronics Co., Ltd., New Taipei, TW;
Chia-Hung Fu, New Taipei, TW;
Chun-Wei Chien, New Taipei, TW;
Chicony Electronics Co., Ltd., New Taipei, TW;
Abstract
A keyboard device includes a substrate, keycaps, and a membrane circuit board. The substrate has an upper surface including assembly areas, and the upper surface has an assembly member. The keycaps are disposed on the substrate and respectively corresponding to the assembly areas. The membrane circuit board is disposed between the substrate and the keycaps. The membrane circuit board includes an upper membrane layer having an upper layer hole, a lower membrane layer having a lower layer hole, and a spacing layer having a middle layer hole. The upper layer hole, the middle layer hole, and the lower layer hole communicate with each other. The assembly member protrudes upwardly from the lower layer hole, the middle layer hole, and the upper layer hole. The upper membrane layer includes a water-baffling edge between edges of the upper layer hole and the middle layer hole.