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US 7,018,059 B2Granted
Direct type backlight module
AssigneeAu Optronics Corporation
InventorsChuan-Pei Yu, Chien-Hung Kuo, Han-Chou Liu
Life of this patent
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Abstract
A direct type backlight module. The backlight module includes a reflector, a diffuser plate, lamps, and a light-distributing device. The diffuser plate is disposed on the reflector, and the lamps are disposed between the reflector and the diffuser plate. The light-distributing device is disposed between the lamp and the diffuser plate, and guides light from the lamp to the diffuser plate. A space is defined between the light-distributing device and the diffuser plate.
Claims16
A direct type backlight module comprising:
- a reflector;
- a diffuser plate disposed on the reflector;
- a lamp disposed between the reflector and the diffuser plate;
- and
- a light-distributing device, comprising a metallic film with a plurality of holes thereon and disposed between the lamp and the diffuser plate, for guiding light from the lamp to the diffuser plate, wherein a space is defined between the light-distributing device and the diffuser plate.
2 more elements
A direct type backlight module comprising:
- a reflector;
- a diffuser plate disposed on the reflector;
- a lamp disposed between the reflector and the diffuser plate;
- and
- a light-distributing device, comprising a light guide plate with a plurality of indexes of refraction thereon and disposed between the lamp and the diffuser plate, for guiding light from the lamp to the diffuser plate, wherein a space is defined between the light-distributing device and the diffuser plate;
- wherein the indexes of refraction are increased from a center of the light guide plate to a periphery of the light guide plate.
3 more elements
Dependencies are inferred from the claim text.