Title:
MEMBRANE SWITCH, MEMBRANE SWITCH KEY AND MEMBRANE SWITCH KEYBOARD
Document Type and Number:
WIPO Patent Application WO/2022/057496
Kind Code:
A1
Abstract:
Disclosed are a membrane switch, a membrane switch key and a membrane switch keyboard. The membrane switch comprises: a first circuit layer and a second circuit layer which are arranged opposite each other, wherein the first circuit layer comprises a first contact, the second circuit layer comprises a second contact, and the first contact and the second contact are arranged opposite each other. The membrane switch further comprises: a gas escape layer, wherein the gas escape layer is located between the first circuit layer and the second circuit layer, or the gas escape layer is located outside the first circuit layer or the second circuit layer; the gas escape layer comprises a gas escape channel, and a channel between the first contact and the second contact is in communication with the gas escape channel; and when a force is applied to the first circuit layer and the second circuit layer and same approach each other, the first contact and the second contact come into contact to create electrical conduction. Therefore, a gas escape layer is arranged independently of a circuit layer, such that a gas escape channel can be isolated from a circuit, thereby increasing the width of an adhesive layer to the greatest possible extent, and improving the waterproof capability thereof.
Inventors:
ZHANG HAIZHOU (CN)
TANG HUIJUN (CN)
TANG HUIJUN (CN)
Application Number:
PCT/CN2021/110885
Publication Date:
March 24, 2022
Filing Date:
August 05, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H01H13/705
Foreign References:
| CN106847592A | 2017-06-13 | |||
| CN201126776Y | 2008-10-01 | |||
| JP2001118458A | 2001-04-27 |
Attorney, Agent or Firm:
BEIJING ZBSD PATENT&TRADEMARK AGENT LTD. (CN)
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