Infrared sensor integrated in a touch panel
First Claim
Patent Images
1. A touch panel system comprising:
- a touchable surface;
a backlight including visible light sources and at least one infrared source, wherein the at least one infrared source is configured to direct infrared radiation through the touchable surface for illuminating objects that are in contact with or adjacent to the touchable surface with infrared radiation;
a touch panel display configured to illuminate pixels for visibly displaying an image, the touch panel display comprising;
a matrix circuit including pixel circuit elements; and
infrared sensors that are integrated in the matrix circuit with the pixel circuit elements and distributed parallel to the touchable surface, wherein;
the infrared sensors are configured to detect reflected infrared radiation incident on the infrared sensors,infrared radiation directed by the at least one infrared source through the touchable surface is not detected by the infrared sensors, andthe infrared sensors are shielded from visible light emitted by the visible light sources and visible light radiated by the pixels via filters located between the touchable surface and each of the infrared sensors; and
a computing device coupled to the touch panel display for processing reflected infrared radiation detected by the infrared sensors, wherein the computing device is configured to;
cause a multi-player game to be displayed by the touch panel display,process reflected infrared radiation detected by the infrared sensors that is directed through the touchable surface by different physical game pieces which are in contact with the touchable surface and which are associated with different players of the multi-player game,identify and distinguish between the different physical game pieces,detect locations of the different physical game pieces, andalter display of the multi-player game based on the locations of the different physical game pieces.
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Abstract
An infrared source is configured to illuminate the underside of one or more objects on or above a touchable surface of a touch panel. Infrared light reflected from the underside of the object(s) is detected by an infrared sensor integrated in the touch panel below the touchable surface.
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Citations
20 Claims
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1. A touch panel system comprising:
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a touchable surface; a backlight including visible light sources and at least one infrared source, wherein the at least one infrared source is configured to direct infrared radiation through the touchable surface for illuminating objects that are in contact with or adjacent to the touchable surface with infrared radiation; a touch panel display configured to illuminate pixels for visibly displaying an image, the touch panel display comprising; a matrix circuit including pixel circuit elements; and infrared sensors that are integrated in the matrix circuit with the pixel circuit elements and distributed parallel to the touchable surface, wherein; the infrared sensors are configured to detect reflected infrared radiation incident on the infrared sensors, infrared radiation directed by the at least one infrared source through the touchable surface is not detected by the infrared sensors, and the infrared sensors are shielded from visible light emitted by the visible light sources and visible light radiated by the pixels via filters located between the touchable surface and each of the infrared sensors; and a computing device coupled to the touch panel display for processing reflected infrared radiation detected by the infrared sensors, wherein the computing device is configured to; cause a multi-player game to be displayed by the touch panel display, process reflected infrared radiation detected by the infrared sensors that is directed through the touchable surface by different physical game pieces which are in contact with the touchable surface and which are associated with different players of the multi-player game, identify and distinguish between the different physical game pieces, detect locations of the different physical game pieces, and alter display of the multi-player game based on the locations of the different physical game pieces. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A touch panel display comprising:
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a touchable surface; a plurality of pixels for visibly displaying an image on the touchable surface; a color backlight comprising a plurality of color light sources for emitting visible light; at least one infrared source configured to direct infrared radiation through the touchable surface for illuminating one or more objects that are in contact with or adjacent to the touchable surface with infrared radiation; a backplane including pixel circuit elements; infrared sensors that are integrated in the backplane with the pixel circuit elements and distributed parallel to the touchable surface, wherein; the infrared sensors are configured to detect reflected infrared radiation incident on the infrared sensors, infrared radiation directed by the at least one infrared source through the touchable surface is not detected by the infrared sensors, and the infrared sensors are shielded from visible light emitted by the color light sources and visible light radiated by the pixels via filters located between the touchable surface and each of the infrared sensors; and a computing device for processing reflected infrared radiation detected by the infrared sensors, wherein the computing device is configured to; cause a game to be displayed on the touchable surface, process reflected infrared radiation detected by the infrared sensors that is directed through the touchable surface by different physical game pieces which are in contact with the touchable surface, identify the different physical game pieces based on symbols or codes imprinted on the different physical game pieces, and alter display of the game on the touchable surface. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method performed in a touch panel system, the method comprising:
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emitting visible light from a backlight of the touch panel system; visibly displaying a game on a touchable surface of a touch panel display by illuminating pixels of the touch panel display; directing infrared radiation from at least one infrared source integrated in the touch panel system through the touchable surface for illuminating different physical game pieces that are in contact with the touchable surface with infrared radiation; detecting reflected infrared radiation incident on infrared sensors which are integrated in the touch panel display with pixel circuit elements and distributed parallel to the touchable surface, wherein; infrared radiation directed by the at least one infrared source through the touchable surface is not detected by the infrared sensors, and the infrared sensors are shielded from visible light emitted by the backlight and visible light radiated by the pixels via filters located between the touchable surface and each of the infrared sensors; and processing reflected infrared radiation that is directed through the touchable surface by the different physical game pieces and detected by the infrared sensors to; identify the different physical game pieces based on symbols or codes imprinted on the different physical game pieces, and alter display of the game on the touchable surface of the touch panel display. - View Dependent Claims (19, 20)
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Specification