Backlight unit of liquid crystal display
First Claim
1. A backlight unit for enhancing brightness of a TFT-LCD device comprises of:
- a lamp for providing a light;
a light guide plate having a top surface and one side, wherein said light is multiple reflected in said light guide plate and emitted from said top surface of said light guide plate, said lamp is fastened to said side of said light guide plate to illuminate said light into said light guide plate with an edgelight form;
an optical film disposed on said light guide plate to spread uniformly said light emitted from said light guide plate; and
an adhesive layer disposed between said light guide plate and said optical film to fill gaps between said light guide plate and said optical film to prevent said light from multiple reflections between said light guide plate and said optical film.
1 Assignment
0 Petitions
Accused Products
Abstract
A backlight unit for enhancing brightness of a TFT-LCD device is disclosed. The backlight unit comprises a lamp and a light guide plate. The light guide plate has a top surface and one side. And the lamp is fastened to the side of the light guide plate for illumination. The light is multiple reflected in the light guide plate and emitted from the top surface of the light guide plate. The backlight unit further comprises an optical film and an adhesive layer, wherein the optical film is disposed on the light guide plate to spread the light uniformly, and the adhesive layer is applied to fill gaps between the light guide plate and the optical film. The adhesive layer has a refractive index equal to that of the light guide plate and the optical film for decreasing multiple reflections therebetween.
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Citations
20 Claims
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1. A backlight unit for enhancing brightness of a TFT-LCD device comprises of:
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a lamp for providing a light;
a light guide plate having a top surface and one side, wherein said light is multiple reflected in said light guide plate and emitted from said top surface of said light guide plate, said lamp is fastened to said side of said light guide plate to illuminate said light into said light guide plate with an edgelight form;
an optical film disposed on said light guide plate to spread uniformly said light emitted from said light guide plate; and
an adhesive layer disposed between said light guide plate and said optical film to fill gaps between said light guide plate and said optical film to prevent said light from multiple reflections between said light guide plate and said optical film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A backlight unit for enhancing brightness of a TFT-LCD device comprises of:
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a lamp for providing a light;
a light guide plate having a top surface, wherein said light is multiple reflected in said light guide plate and emitted from said top surface thereof, said lamp is disposed beneath said light guide plate to illuminate said light into said light guide plate with an backlight form;
an optical film disposed on said light guide plate to spread said light emitted from said light guide plate uniformly; and
an adhesive layer disposed between said light guide plate and said optical film to fill gaps therebetween to reduce multiple reflections of said light between said light guide plate and said optical film. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification