Touch panel display with light source modules and camera for touch point detection
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United States of America Patent
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Apr 30, 2013
Grant Date -
Oct 21, 2010
app pub date -
Dec 11, 2009
filing date -
Apr 21, 2009
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An exemplary touch panel display includes a display panel, light source modules, and a camera. The display panel includes a touch surface. The light source modules are disposed on a periphery of the display panel. Light from the light source modules cooperatively forms a substantially planar illumination field. The camera is provided at a periphery of the display panel. When an object contacts or is adjacent to the touch surface, some of the light of the illumination field is reflected by the object to the camera.
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