公开(公告)号：US10978261B2

公开(公告)日：2021-04-13

申请号：US16897384

申请日：2020-06-10

Applicant: Darfon Electronics Corp.

Inventor： Zheng-Hong Lai ,  Chih-Ho Hsu ,  Che-Wei Lee ,  Jin-Long Chan ,  Yuan-bao Chen ,  Chang-En Sun

IPC: H01H13/86 ,  H01H13/705 ,  H01H13/06

Abstract: A method for fabricating a keyboard covering film is provided. The method includes steps of: coating a transparent plastic material on an upper surface of a fabric layer before the transparent plastic material is cured; treating the fabric layer and the transparent plastic material by a hot press process to cure the transparent plastic material to form a transparent layer and to make the transparent layer and the fabric layer jointly form a number of keycap receiving sections; forming a mask layer on a lower surface of the fabric layer; removing a portion of the mask layer and a portion of the fabric layer located within each of the keycap receiving sections to form a number of hollow patterns.

公开(公告)号：US20210193411A1

公开(公告)日：2021-06-24

申请号：US17103911

申请日：2020-11-24

Applicant: DARFON ELECTRONICS CORP.

Inventor： Zheng-Hong Lai ,  Chih-Ho Hsu ,  Chin-Lung Chan ,  Che-Wei Lee ,  Chang-En Sun

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.

公开(公告)号：US11289288B2

公开(公告)日：2022-03-29

申请号：US17103911

申请日：2020-11-24

Applicant: DARFON ELECTRONICS CORP.

Inventor： Zheng-Hong Lai ,  Chih-Ho Hsu ,  Chin-Lung Chan ,  Che-Wei Lee ,  Chang-En Sun

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.

公开(公告)号：US10770246B2

公开(公告)日：2020-09-08

申请号：US15971021

申请日：2018-05-04

Applicant: Darfon Electronics Corp.

Inventor： Zheng-Hong Lai ,  Chih-Ho Hsu ,  Che-Wei Lee ,  Jin-Long Chan ,  Yuan-bao Chen ,  Chang-En Sun

IPC: H01H13/86 ,  H01H13/705 ,  H01H13/06

Abstract: A keyboard covering film including a fabric layer, a transparent layer and a mask layer is disclosed. The transparent layer is disposed on an upper surface of the fabric layer. The mask layer is disposed on a lower surface of the fabric layer. The transparent layer and the fabric layer are treated by a hot pressing process to form a number of keycap receiving sections. The keycap receiving sections, the fabric layer and the mask layer are located on the same side of the transparent layer. The fabric layer and the mask layer have hollow patterns within the keycap receiving sections, wherein the hollow patterns are formed by removing a portion of the fabric layer and the mask layer.