公开(公告)号：US20200075271A1

公开(公告)日：2020-03-05

申请号：US16193914

申请日：2018-11-16

Applicant: Primax Electronics Ltd.

Inventor： Ming-Han Wu ,  Che-Wei Yang ,  Yi-Wei Chen ,  Hsien-Tsan Chang ,  Chen-Hsuan Hsu

IPC: H01H13/86 ,  H01H13/85 ,  H01H13/88

Abstract: A keyboard device includes a keyboard base, a flexible protection cover and a protective frame. The flexible protection cover is located over the keyboard base to cover the key structures that are disposed on the keyboard base. The protective frame is disposed on the flexible protection cover. Moreover, plural hollow protrusion structures of the flexible protection cover are partially penetrated through corresponding openings of the protective frame and exposed outside the protective frame. The elastic buffering parts of the flexible protection cover are disposed within corresponding concave structures of the protective frame and covered by the protective frame.

公开(公告)号：US20190172663A1

公开(公告)日：2019-06-06

申请号：US16189314

申请日：2018-11-13

Applicant: Primax Electronics Ltd.

Inventor： Tien-Yu Yeh ,  Che-Wei Yang

IPC: H01H13/83 ,  H01H3/12 ,  H01H13/7065 ,  H01H13/02 ,  F21V33/00

Abstract: A luminous keyboard includes a key module, a light guide plate, a top-view light-emitting element and a light-shading element. The top-view light-emitting element emits a light beam. The light guide plate is located under the key module. The top-view light-emitting element is located under the light guide plate. A light-outputting surface of the top-view light-emitting element is contacted with the light guide plate. The light-shading element is disposed on the light guide plate for shading the light beam. A portion of the light-shading element is inserted into the light guide plate opening and formed as a reflective part in the light guide plate opening. After the light beam is projected on the reflective part and reflected by the reflective part, the light beam is transferred within the light guide plate and projected to the key module.

公开(公告)号：US10254467B2

公开(公告)日：2019-04-09

申请号：US15676200

申请日：2017-08-14

Applicant: Primax Electronics Ltd.

Inventor： Tien-Yu Yeh ,  Che-Wei Yang

IPC: F21V8/00

Abstract: The present invention provides a backlight structure, including: a light source module having a first slant surface, where a slot is provided on the first slant surface, and the slot is configured to accommodate a light emitting element; a light guiding module having a light guiding plate and a light shielding layer, where a second slant surface is provided at a side of the light guiding module; and a baseplate configured to bear the light guiding module and the light source module. The light source module is engaged with the second slant surface of the light guiding module by means of the first slant surface.

公开(公告)号：US20180053611A1

公开(公告)日：2018-02-22

申请号：US15360150

申请日：2016-11-23

Applicant: PRIMAX ELECTRONICS LTD.

Inventor： Che-Wei Yang ,  Chun-Yuan Liu

IPC: H01H13/83 ,  H01H13/7065

CPC classification number: H01H13/83 ,  H01H3/125 ,  H01H13/7065 ,  H01H2215/006 ,  H01H2219/039 ,  H01H2219/048 ,  H01H2219/054 ,  H01H2219/062

Abstract: A light color changeable illuminated keyboard includes a circuit layer, plural keys, a switching key, a bicolor light-emitting element and a control unit. The plural keys and the switching key are disposed on the circuit layer. The bicolor light-emitting element is located under the plural keys. The bicolor light-emitting element selectively emits a first color light or a second color light. The control unit is electrically connected with the switching key and the bicolor light-emitting element. If the switching key is pressed down when the bicolor light-emitting element emits the first color light, a pressing signal is generated. In response to the pressing signal, the color light emitted by the bicolor light-emitting element is switched from the first color light to the second color light under control of the control unit.

公开(公告)号：US20170358406A1

公开(公告)日：2017-12-14

申请号：US15220196

申请日：2016-07-26

Applicant: PRIMAX ELECTRONICS LTD.

Inventor： Che-Wei Yang

IPC: H01H13/14 ,  H01H13/52

CPC classification number: H01H3/125 ,  G06F1/1666 ,  H01H2221/058 ,  H01H2221/068 ,  H01H2223/052 ,  H01H2231/042

Abstract: A key structure includes a supporting plate, a keycap, a scissors-type connecting element, a movable element and a coupling structure. The keycap is disposed over the supporting plate. The coupling structure is connected with the scissors-type connecting element and the movable element. For operating the key structure, the cooperation of the movable element and the coupling structure allows the keycap to be at a higher first height. Consequently, the tactile feel of depressing the key structure is enhanced. Moreover, the cooperation of the movable element and the coupling structure can lower the height of the keycap. Consequently, the key structure has a slim appearance.