发明名称 |
PEN STYLUS ENABLED CAPACITIVE TOUCH SYSTEM AND METHOD |
摘要 |
Described is a capacitive touch screen apparatus. An indium tin oxide (ITO) ground screen covers and protects an optical display. One or more support structures are secured atop the ground screen layer. A first capacitance sensing patterned ITO trace layer is secured atop the support structures such that an air gap exists between the layers. A second capacitance sensing patterned ITO trace layer can be secured atop the first patterned ITO trace layer. A pointed object brought into contact with the outermost patterned ITO trace layer will deform the surface and penetrate a portion of the air gap sufficiently to register a change in capacitance at the point of contact. A protective transparent film layer covering the outermost patterned ITO trace layer can be utilized to protect the surface of the ITO layer from damage. The ITO layers are electronically coupled with a controller capable of sensing changes in capacitance.
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申请公布号 |
US2009256825(A1) |
申请公布日期 |
2009.10.15 |
申请号 |
US20080101506 |
申请日期 |
2008.04.11 |
申请人 |
KLINGHULT GUNNAR;FUTTER PAUL |
发明人 |
KLINGHULT GUNNAR;FUTTER PAUL |
分类号 |
G06F3/033;G06F3/041 |
主分类号 |
G06F3/033 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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