Invention Grant
- Patent Title: Keyboard key switches
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Application No.: US16895277Application Date: 2020-06-08
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Publication No.: US11557444B2Publication Date: 2023-01-17
- Inventor: Jian-Cheng Lai , Wei-Min Liang , Kuo Shou Yu
- Applicant: Hewlett-Packard Development Company, L.P.
- Applicant Address: US TX Spring
- Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee Address: US TX Spring
- Agency: Quarles & Brady LLP
- Main IPC: H01H13/04
- IPC: H01H13/04 ; H01H13/14 ; H01H13/7073 ; G01D5/34 ; H03K17/94

Abstract:
Key switches of the inventive subject matter are designed to give users the tactile feel of key switches from expensive mechanical keyboards without drawback typically associated with alternative key switches. In some embodiments, key switches described in this application are designed to function with a sheet of membrane switches, while in other embodiments, key switches of the inventive subject matter incorporate optical switching in place of membrane switching. Embodiments for use with membrane switching feature a plunger and rocker combination that prevents the pressure from a user's key press from being directly transferred to a membrane switch, thereby reducing wear and tear. In optical switching embodiments, pressing the key switch causes an actuator, e.g., come between an optical emitter/receiver pair to register a key press.
Public/Granted literature
- US20210383986A1 KEYBOARD KEY SWITCHES Public/Granted day:2021-12-09
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