Invention Grant
- Patent Title: Keyboard dome overlay structure
- Patent Title (中): 键盘圆顶覆盖结构
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Application No.: US12696563Application Date: 2010-01-29
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Publication No.: US08258418B2Publication Date: 2012-09-04
- Inventor: Chao Chen
- Applicant: Chao Chen
- Applicant Address: CA Waterloo
- Assignee: Research In Motion Limited
- Current Assignee: Research In Motion Limited
- Current Assignee Address: CA Waterloo
- Agency: Fitch, Even, Tabin & Flannery, LLP
- Main IPC: H01H9/04
- IPC: H01H9/04

Abstract:
A dome overlay structure for a mobile device keyboard includes a plurality of dome switches, a circuit board disposed beneath the plurality of dome switches with each dome switch electrically coupled to the circuit board, a main overlay disposed over the plurality of dome switches, and a first adhesive dab centrally interposed between the dome switch and the main overlay with a second adhesive dab surrounding the first adhesive dab. Each dome switch has a central portion and a non-central portion. The first adhesive dab can bond the central portion of the dome switch to the main overlay. The second adhesive dab is configured to form a gap between the second adhesive dab and the non-central portion of the dome switch in an unactuated configuration and configured to contact the non-central portion of the dome switch in an actuated configuration.
Public/Granted literature
- US20110186413A1 KEYBOARD DOME OVERLAY STRUCTURE Public/Granted day:2011-08-04
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