Optical touch-screen imager
AssigneeOmniVision Technologies, Inc.
InventorDominic Massetti
Life of this patent
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Abstract
Embodiments of an apparatus comprising a CMOS image sensor including a pixel array formed in a substrate and a light guide formed on the substrate to receive light traveling in a plane parallel to a plane of the pixel array and incident on the edge of the image sensor and to re-direct the incident light into at least one pixel of the pixel array. Embodiments of an optical touch-screen imager comprising a substantially planar touch area and a detector positioned adjacent to the touch area, the detector comprising a CMOS image sensor as described above.
Claims33
An apparatus comprising:
- a CMOS image sensor including a pixel array formed in a CMOS image sensor substrate;
- a light guide formed on the CMOS image sensor substrate to receive light traveling parallel to a plane of the pixel array and incident on the edge of the CMOS image sensor and to re-direct the incident light into at least one pixel of the pixel array.
An optical touch-screen imager comprising:
- a substantially planar touch area;
- a detector positioned adjacent to the touch area, the detector comprising:
- a CMOS image sensor including a pixel array formed in a CMOS image sensor substrate, the image sensor being positioned so that a plane of the pixel array is substantially parallel to the plane of the touch area, and
- a light guide formed on the CMOS image sensor substrate to receive light traveling parallel to a plane of the pixel array and incident on the edge of the CMOS image sensor and to re-direct the incident light into at least one pixel of the pixel array.
A process comprising:
- forming a pixel array in a CMOS image sensor substrate;
- forming a light guide on the CMOS image sensor substrate to receive light traveling parallel to a plane of the pixel array and incident on the edge of the CMOS image sensor, and to re-direct the incident light into at least one pixel of the pixel array.
Dependencies are inferred from the claim text.