Light-emitting assembly and interactive display device having the same

An interactive display device comprising:

• 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.

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 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.

A interactive display device comprising:

• 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.