LIGHT GUIDE PLATE AND LIQUID CRYSTAL DISPLAY APPARATUS USING THE SAME
First Claim
Patent Images
1. A light guide plate, which allows light emitted from a light source to enter through an incident plane,the light guide plate comprising:
- a pattern unit spaced a predetermined distance away from the incident plane and at least partially disposed in a first direction in parallel with the incident plane,wherein the light guide plate comprises a bezel area blocked by a bezel and a display area outside the bezel area,wherein the pattern unit is configured to diffuse light incident through the incident plane in the first direction in the bezel area, andwherein the bezel area comprises an emission area, which falls within the range of the directivity angle of the light source, and a shaded area, which is out of the range of the directivity angle of the light source, andwherein a part of the pattern unit is formed in the shaded area.
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Abstract
Light can be uniformly distributed in the bezel area by diffusing the light in the bezel area blocked by an upper case, or by providing an optical pattern for light concentration. Accordingly, the brightness of light is similar for all positions at the boundary between the bezel area and the display area, thereby solving the hot spot problem caused by a brightness difference depending on position.
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Citations
15 Claims
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1. A light guide plate, which allows light emitted from a light source to enter through an incident plane,
the light guide plate comprising: -
a pattern unit spaced a predetermined distance away from the incident plane and at least partially disposed in a first direction in parallel with the incident plane, wherein the light guide plate comprises a bezel area blocked by a bezel and a display area outside the bezel area, wherein the pattern unit is configured to diffuse light incident through the incident plane in the first direction in the bezel area, and wherein the bezel area comprises an emission area, which falls within the range of the directivity angle of the light source, and a shaded area, which is out of the range of the directivity angle of the light source, and wherein a part of the pattern unit is formed in the shaded area. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A liquid crystal display apparatus comprising:
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a liquid crystal display panel; and a backlight unit comprising a light source; and a light guide plate, which allows light emitted from a light source to enter through an incident plane, the light guide plate comprising; a pattern unit spaced a predetermined distance away from the incident plane and at least partially disposed in a first direction in parallel with the incident plane, wherein the light guide plate comprises a bezel area blocked by a bezel and a display area outside the bezel area, wherein the pattern unit is configured to diffuse light incident through the incident plane in the first direction in the bezel area, and wherein the bezel area comprises an emission area, which falls within the range of the directivity angle of the light source, and a shaded area, which is out of the range of the directivity angle of the light source, and wherein a part of the pattern unit is formed in the shaded area. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification