Back light module for flat display device
First Claim
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1. A backlight module for a flat display device, comprising:
- a light guide plate comprising a top surface that has an edge section, and a bottom surface terminating with a slant surface below the edge section, the slant surface comprising light diffusion elements;
a reflector below the bottom surface including a slant reflector section below the slant surface; and
a light source positioned relative to the edge section of the top surface, wherein light from the light source is transmitted through the edge section of the top surface and directed towards the slant reflector section, to be redirected towards the top surface to be emitted through the top surface.
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Abstract
A back light module for flat display device for decreasing the thickness of light guide plate is disclosed. This invention comprises a light guide plate having a first section, a second section and a light-emitting surface; a light source above the light guide plate; a reflector below the light guide plate; and a flexible printed circuit board located at the lateral end of light source wherein most of the light rays emitted from the light source enter into the second section through the first section, then emit from the light-emitting surface.
76 Citations
18 Claims
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1. A backlight module for a flat display device, comprising:
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a light guide plate comprising a top surface that has an edge section, and a bottom surface terminating with a slant surface below the edge section, the slant surface comprising light diffusion elements; a reflector below the bottom surface including a slant reflector section below the slant surface; and a light source positioned relative to the edge section of the top surface, wherein light from the light source is transmitted through the edge section of the top surface and directed towards the slant reflector section, to be redirected towards the top surface to be emitted through the top surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A backlight module for a flat display device, comprising:
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a light guide plate comprising a top surface that has an edge section, and a bottom surface terminating with a slant surface below the edge section; a reflector below the bottom surface including a slant reflector section below the slant surface; and a point light source positioned above the edge section of the top surface, wherein light from the point light source is directed through the light guide plate towards the slant reflector section, to be redirected towards the top surface. - View Dependent Claims (16, 17)
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18. A method of providing backlight for a flat display device, comprising:
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providing a light guide plate comprising a top surface that has an edge section, and a bottom surface terminating with a slant surface below the edge section, the slant surface comprising light diffusion elements; providing a reflector below the bottom surface including a slant reflector section below the slant surface; and providing a point light source positioned relative to the edge section of the top surface, wherein light from the light source is transmitted through the edge section of the top surface and directed towards the slant reflector section, to be redirected towards the top surface.
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Specification