Invention Grant
- Patent Title: Backlighting inductive touch buttons
- Patent Title (中): 背光感应触摸按钮
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Application No.: US12787474Application Date: 2010-05-26
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Publication No.: US08408723B2Publication Date: 2013-04-02
- Inventor: Stephen B. Porter , Keith Curtis
- Applicant: Stephen B. Porter , Keith Curtis
- Applicant Address: US AZ Chandler
- Assignee: Microchip Technology Incorporated
- Current Assignee: Microchip Technology Incorporated
- Current Assignee Address: US AZ Chandler
- Agency: King & Spalding L.L.P.
- Main IPC: G02F1/13357
- IPC: G02F1/13357 ; H04M99/00

Abstract:
Backing lighting of induction touch keys is accomplished with a spacer layer surrounding an inductive touch sensor coil and a light source on a substrate, and light transmissive layer having a suspended metal disk proximate to the inductive touch sensor coil. A protective fascia may be placed over the light transmissive layer and spacer layer. When the light transmissive layer is displaced toward the inductive touch sensor coil the impedance value of the inductive touch sensor coil changes and the change is detected. Materials used that are translucent (light transmissive) may be continuous and solid, and opaque materials may have openings therein for transmission of light therethrough.
Public/Granted literature
- US20110050626A1 BACKLIGHTING INDUCTIVE TOUCH BUTTONS Public/Granted day:2011-03-03
Information query
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