Invention Grant
US08411045B2 Touch sensitive displays with coplanar capacitive touch and proximity sensor pads and related touch panels 失效
使用共平面电容触摸和接近传感器焊盘和相关触摸面板的触敏显示器

Touch sensitive displays with coplanar capacitive touch and proximity sensor pads and related touch panels
Abstract:
An electronic touch panel includes a plurality of spaced apart touch sensor pads that are arranged in a first direction on a planar layer. A proximity sensor pad is on the planar layer and is electrically isolated from the touch sensor pads. The proximity sensor pad has a greater surface area than a plurality of the touch sensor pads. A position detection circuit is configured to electrically charge the touch sensor pads to generate capacitive coupling to an adjacent user object and to detect therefrom a location of the user object relative to the first direction across the planar layer, and configured to electrically charge the proximity sensor pad to generate a higher level of capacitive coupling to the user object than a plurality of the touch sensor pads and to detect therefrom a proximity of the user object in a perpendicular direction to the planar layer. The proximity sensor pad may extend as a continuous line on the planar layer between adjacent spaced apart columns of the touch sensor pads.
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