Invention Grant
- Patent Title: Waterproof film and keyboard thereof
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Application No.: US17103911Application Date: 2020-11-24
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Publication No.: US11289288B2Publication Date: 2022-03-29
- Inventor: Zheng-Hong Lai , Chih-Ho Hsu , Chin-Lung Chan , Che-Wei Lee , Chang-En Sun
- Applicant: DARFON ELECTRONICS CORP.
- Applicant Address: TW Taoyuan
- Assignee: DARFON ELECTRONICS CORP.
- Current Assignee: DARFON ELECTRONICS CORP.
- Current Assignee Address: TW Taoyuan
- Agent Winston Hsu
- Priority: TW108147189 20191223
- Main IPC: H01H13/86
- IPC: H01H13/86 ; H01H13/83

Abstract:
A waterproof film includes a film reinforcing layer, a light shielding layer, a texture layer, and a pattern. The light shielding layer is combined under the film reinforcing layer and forms a plurality of protruding structures cooperatively with the film reinforcing layer by a hot pressing process. The texture layer is attached to a release film and then formed on a top surface and a side surface of each protruding structure after a hot pressing process is performed and the release film is then peeled. The pattern is formed on the texture layer or the light shielding layer.
Public/Granted literature
- US20210193411A1 WATERPROOF FILM AND KEYBOARD THEREOF Public/Granted day:2021-06-24
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