LCD Backlight unit and LCD having the same
First Claim
1. A Light Emitting Display (LCD) backlight apparatus comprising:
- a light guide plate placed under an LCD panel of the LCD to guide light to the LCD panel, the light guide plate having an even upper surface and a scattering pattern formed in a bottom surface; and
a plurality of monochromatic light sources placed in line at a side of the light guide plate to radiate light along the plane direction of the light guide plate between the upper and bottom surfaces of the light guide plate, wherein the light sources are adapted to radiate light beams in a predetermined beam angle so that the light beams reach the scattering pattern only after having propagated a predetermined reference length necessary for forming white light when mixed together.
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Accused Products
Abstract
The invention relates to an LCD backlight apparatus, which includes a light guide plate placed under an LCD panel of the LCD to guide light to the LCD panel. The light guide plate has an even upper surface and a scattering pattern formed in a bottom surface. A plurality of monochromatic light sources are placed in line at a side of the light guide plate to radiate light along the plane direction of the light guide plate between the upper and bottom surfaces of the light guide plate. The light sources are adapted to radiate light beams in a predetermined beam angle so that the light beams reach the scattering pattern only after having propagated a predetermined reference length necessary for forming white light when mixed together. The LCD backlight apparatus can reduce the Bezel width without increasing the thickness of an LCD.
20 Citations
18 Claims
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1. A Light Emitting Display (LCD) backlight apparatus comprising:
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a light guide plate placed under an LCD panel of the LCD to guide light to the LCD panel, the light guide plate having an even upper surface and a scattering pattern formed in a bottom surface; and
a plurality of monochromatic light sources placed in line at a side of the light guide plate to radiate light along the plane direction of the light guide plate between the upper and bottom surfaces of the light guide plate, wherein the light sources are adapted to radiate light beams in a predetermined beam angle so that the light beams reach the scattering pattern only after having propagated a predetermined reference length necessary for forming white light when mixed together. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A Liquid Crystal Display (LCD) comprising:
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an LCD panel for displaying images in response input electric signals;
a circuit board for applying the electric signals to the LCD panel;
a backlight apparatus placed under the LCD panel to backlight the LCD panel, wherein the backlight apparatus includes;
a light guide plate placed under an LCD panel of the LCD to guide light to the LCD panel, the light guide plate having an even upper surface and a scattering pattern formed in a bottom surface; and
a plurality of monochromatic light sources placed in line at a side of the light guide plate to radiate light along the plane direction of the light guide plate between the upper and bottom surfaces of the light guide plate, wherein the light sources are adapted to radiate light beams in a predetermined beam angle so that the light beams reach the scattering pattern only after having propagated a predetermined reference length necessary for forming white light when mixed together; and
a housing for housing the LCD panel, the circuit board and the backlight unit. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification