发明申请
- 专利标题： PHYSICAL FORCE CAPACITIVE TOUCH SENSORS HAVING CONDUCTIVE PLANE AND BACKLIGHTING
- 专利标题（中）： 具有导电平面和背光的物理电容触摸传感器
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申请号： US13468504申请日： 2012-05-10
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公开(公告)号： US20120217147A1公开(公告)日： 2012-08-30
- 发明人: Stephen B. Porter , Keith Curtis , Fanie Duvenhage
- 申请人： Stephen B. Porter , Keith Curtis , Fanie Duvenhage
- 专利权人： Microchip Technology Incorporated
- 当前专利权人： Microchip Technology Incorporated
- 主分类号： H03K17/975
- IPC分类号： H03K17/975
摘要：
A physical force capacitive touch sensor comprises a capacitive sensor element on a substrate, a physically deformable electrically insulating spacer over the capacitive sensor element and a conductive plane over the physically deformable electrically insulating spacer. A protective fascia may be placed over the conductive plane provides an environmental seal for physical and weather protection, but is not essential to operation of the capacitive touch sensor. Back lighting is accomplished with a light transmissive layer having a suspended metal target proximate to the capacitive touch sensor plate. When the light transmissive layer and metal target are displaced toward the capacitive touch sensor plate the capacitance value of the capacitive touch sensor plate changes and that change is detected.