Light-emitting assembly and interactive display device having the same
First Claim
1. A light-emitting assembly comprising:
- a light guide plate (LGP) having printed patterns formed on a lower surface thereof;
a first infrared light-emitting part including a plurality of first infrared light-emitting diodes (LEDs) disposed at a first side of the LGP, the first infrared LEDs spaced apart by first intervals wherein at least two of the first intervals have different sizes;
a second infrared light-emitting part including a plurality of second infrared LEDs disposed at a second side of the LGP, the second infrared LEDs spaced apart by second intervals wherein at least two of the second intervals have different sizes; and
a visible light-emitting part including a plurality of visible LEDs disposed at a third side of the LGP, the visible LEDs spaced apart by third intervals wherein at least two of the third intervals have different sizes,wherein the first intervals between the first infrared LEDs and the second intervals between the second infrared LEDs are gradually increased in a direction away from the visible light-emitting part.
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Accused Products
Abstract
A light-emitting assembly includes a light guide plate (LGP), a first infrared light-emitting part, a second infrared light-emitting part and a visible light-emitting part. The LGP has printed circuit patterns formed on a lower surface thereof. The first infrared light-emitting part includes a plurality of first infrared light-emitting diodes (LEDs) disposed at a first side of the LGP and spaced apart by intervals having different sizes. The second infrared light-emitting part includes a plurality of second infrared LEDs disposed at a second side of the LGP and spaced apart by intervals having different sizes. The visible light-emitting part includes a plurality of visible LEDs disposed at a third side of the LGP and spaced apart by intervals having different sizes, so that infrared light and visible light that is emitted from the two different kinds of light sources may be uniformly provided to a touch screen panel.
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Citations
18 Claims
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1. A light-emitting assembly comprising:
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a light guide plate (LGP) having printed patterns formed on a lower surface thereof; a first infrared light-emitting part including a plurality of first infrared light-emitting diodes (LEDs) disposed at a first side of the LGP, the first infrared LEDs spaced apart by first intervals wherein at least two of the first intervals have different sizes; a second infrared light-emitting part including a plurality of second infrared LEDs disposed at a second side of the LGP, the second infrared LEDs spaced apart by second intervals wherein at least two of the second intervals have different sizes; and a visible light-emitting part including a plurality of visible LEDs disposed at a third side of the LGP, the visible LEDs spaced apart by third intervals wherein at least two of the third intervals have different sizes, wherein the first intervals between the first infrared LEDs and the second intervals between the second infrared LEDs are gradually increased in a direction away from the visible light-emitting part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An interactive display device comprising:
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a touch screen panel; and a light-emitting assembly disposed below the touch screen panel to provide the touch screen panel with light for displaying an image and light for identifying a touch, the light-emitting assembly comprising; a light guide plate (LGP) having printed patterns formed on a lower surface thereof; a first infrared light-emitting part including a plurality of first infrared light-emitting diodes (LEDs) disposed at a first side of the LGP, the first infrared LEDs spaced apart by first intervals wherein at least two of the first intervals have different sizes; a second infrared light-emitting part including a plurality of second infrared LEDs disposed at a second side of the LGP, the second infrared LEDs spaced apart by second intervals wherein at least two of the second intervals have different sizes; and a visible light-emitting part including a plurality of visible LEDs disposed at a third side of the LGP, the visible LEDs spaced apart by third intervals wherein at least two of the third intervals have different sizes, wherein the first intervals between the first infrared LEDs and second intervals between the second infrared LEDs are gradually increased in a direction away from the visible light-emitting part. - View Dependent Claims (15, 16)
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17. A light-emitting assembly comprising:
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a light guide plate (LGP) having printed patterns formed on a lower surface thereof; a first infrared light-emitting part including a plurality of first infrared light-emitting diodes (LEDs) disposed at a first side of the LGP, the first infrared LEDs spaced apart by first intervals wherein at least two of the first intervals have different sizes; a second infrared light-emitting part including a plurality of second infrared LEDs disposed at a second side of the LGP, the second infrared LEDs spaced apart by second intervals wherein at least two of the second intervals have different sizes; and a visible light-emitting part including a plurality of visible LEDs disposed at a third side of the LGP, the visible LEDs spaced apart by third intervals wherein at least two of the third intervals have different sizes, wherein the third intervals between the visible LEDs of the visible light-emitting part are decreased in a direction away from a center portion of the LGP.
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18. A interactive display device comprising:
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a touch screen panel; and a light-emitting assembly disposed below the touch screen panel to provide the touch screen panel with light for displaying an image and light for identifying a touch, the light-emitting assembly comprising; a light guide plate (LGP) having printed patterns formed on a lower surface thereof; a first infrared light-emitting part including a plurality of first infrared light-emitting diodes (LEDs) disposed at a first side of the LGP, the first infrared LEDs spaced apart by first intervals wherein at least two of the first intervals have different sizes; a second infrared light-emitting part including a plurality of second infrared LEDs disposed at a second side of the LGP, the second infrared LEDs spaced apart by second intervals wherein at least two of the second intervals have different sizes; and a visible light-emitting part including a plurality of visible LEDs disposed at a third side of the LGP, the visible LEDs spaced apart by third intervals wherein at least two of the third intervals have different sizes, wherein the third intervals between the visible LEDs of the visible light-emitting part are decreased in a direction away from a center portion of the LGP.
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Specification