Light guide and touch screen assembly
AssigneeHewlett-Packard Development Company, L.P.
InventorsKatherine Weilbacher, Jeffrey Lueschen, Lawrence J Gutkowski, Maria Del Carmen Tate, Ethan Bret Nusbaum
Life of this patent
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Abstract
The present disclosure provides a light guide comprising a frame defining a central space, at least first reflective surface formed on a bottom side of the frame and at least second reflective surface formed on a top side of the frame. A light emitted by a light emitting element is capable of being reflected by the at least first reflective surface and the at least second reflective surface to a light receiving element. The present disclosure also provides a touch screen assembly.
Claims18
A light guide comprising:
- a frame defining a central space;
- a first reflective surface formed on a bottom side of the frame;
- and
- a second reflective surface formed on a top side of the frame, wherein light from a plurality of light emitting elements, reflected by the first reflective surface and the second reflective surface, is received by a plurality of light receiving elements, wherein each light emitting element is disposed on a first side of a circuit board and is paired with a light receiving element disposed on a second side of the circuit, the second side of the circuit board opposite the first side of the circuit board, wherein the light is to form an optical matrix within the central space.
A touch screen assembly comprising:
- a light guide defining a central space;
- a printed circuit assembly comprising a printed circuit board, a plurality of light emitting elements, the light emitting elements disposed onto a first side of the printed circuit board, each light emitting element paired with one of a plurality of light receiving elements, the light receiving elements disposed onto a second side of the printed circuit board, the second side of the printed circuit board opposite the first side of the printed circuit board, and the printed circuit assembly being attached to a bottom side of the light guide wherein light from the plurality of light emitting elements directed through the light guide to the plurality of light receiving elements is to form a light matrix within the central space;
- a color and graphics display disposed within the central space of the light guide and above the printed circuit assembly;
- a touch panel disposed within the central space of the light guide and above the color and graphics display;
- and
- a bezel holding the printed circuit assembly, the light guide, the color and graphics display and the touch panel in place.
Dependencies are inferred from the claim text.