LIGHT SENSING ASSEMBLY AND INTERACTIVE DISPLAY DEVICE HAVING THE SAME
First Claim
Patent Images
1. A light sensing assembly comprising:
- a first light guide plate;
a light-emitting diode part at a side portion of the first light guide plate, wherein the light-emitting diode part emits white lights of a displayed image;
an infrared light-emitting diode part which emits infrared lights of a detected touch;
a second light guide plate below the first light guide plate, wherein the second light guide plate guides a path of the infrared lights of the detected touch which are inputted in accordance with a touch operation; and
a first sensor array at a side portion of the second light guide plate, wherein the first sensor array senses the infrared lights which are guided by the second light guide plate.
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Abstract
A light sensing assembly includes a first light guide plate (“LGP”), a light-emitting diode (“LED”) part, an infrared LED part, a second LGP and a first sensor array. The LED part is at a side portion of the first LGP and emits white lights of a displayed image. The infrared LED part emits infrared lights of a detected touch. The second LGP is below the first LGP. The second LGP guides a path of the infrared lights of the detected touch inputted in accordance with a touch operation. The first sensor array is at a side portion of the second LGP and senses the reflected infrared lights which are guided by the second LGP.
28 Citations
22 Claims
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1. A light sensing assembly comprising:
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a first light guide plate; a light-emitting diode part at a side portion of the first light guide plate, wherein the light-emitting diode part emits white lights of a displayed image; an infrared light-emitting diode part which emits infrared lights of a detected touch; a second light guide plate below the first light guide plate, wherein the second light guide plate guides a path of the infrared lights of the detected touch which are inputted in accordance with a touch operation; and a first sensor array at a side portion of the second light guide plate, wherein the first sensor array senses the infrared lights which are guided by the second light guide plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An interactive display device comprising:
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a display panel which displays an image; a first light guide plate below the display panel; a white light-emitting diode part adjacent to a side portion of the first light guide plate, wherein the white light-emitting diode part emits white lights and the first light guide plate guides a path of the white lights to the display panel which displays the image; an infrared light-emitting diode part which emits infrared lights; a second light guide plate below the first light guide plate, wherein the second light guide plate guides a path of the infrared lights reflected in a touch operation at the display panel, to a first sensor array; and the first sensor array at a side portion of the second light guide plate, wherein the first sensor array senses the infrared lights which are guided by the second light guide plate. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. An interactive display device comprising:
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a display panel which displays an image; a first light guide plate below the display panel; a white light-emitting diode part at a side portion of the first light guide plate, wherein the white light-emitting diode part emits white lights and the first light guide plate guides a path of the white lights to the display panel which displays the image; an infrared light-emitting diode part at a first side of the first light guide plate, wherein the infrared light-emitting diode part emits infrared lights; a second light guide plate below a first area of the first light guide plate, wherein the second light guide plate guides a path of the infrared lights reflected in a touch operation at the display panel; a third light guide plate below a second area of the first light guide plate different than the first area, wherein the third light guide plate guides a path of the reflected infrared lights; a first sensor array at a first side portion of the second light guide plate, wherein the first sensor array senses the reflected infrared lights which are guided by the second light guide plate; and a second sensor array at a first side portion of the third light guide plate, wherein the second sensor array senses the reflected infrared lights which are guided by the third light guide plate. - View Dependent Claims (21, 22)
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Specification