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US 2014/0177270 A1Published application
Backlight module
AssigneeHon Hai Precision Industry Co., Ltd.
InventorPO-CHOU CHEN
Life of this patent
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Abstract
A backlight module includes LEDs; a light guiding plate receiving light emitted from the LEDs; a diffusion sheet arranged above the light guiding plate; and a lens arranged above on the diffusion sheet. The lens comprises a light incident surface facing the diffusion sheet, and the light incident surface has a plurality of prism protrusions formed thereon. Each prism protrusion has a cross section of an inverted triangle with a bottom vertex having an internal angle of 50-57 degrees.
Claims14
A backlight module comprising:
- LEDs;
- a light guiding plate receiving light emitted from the LEDs;
- a diffusion sheet arranged above the light guiding plate;
- and
- a lens arranged above on the diffusion sheet, the lens comprising a light incident surface facing the diffusion sheet, the light incident surface having a plurality of prism protrusions formed thereon, each prism protrusion having a cross section with a shape of an inverted triangle.
2 more elements
A backlight module comprising:
- a light guiding plate comprising two light input surfaces and a light output surface adjacent to and connected to the light input surfaces;
- LEDs respectively facing the light input surfaces;
- a diffusion sheet arranged above the light output surface of the light guiding plate;
- and
- a lens arranged above on the diffusion sheet, the lens comprising a light incident surface facing the diffusion sheet, the light incident surface having a series of prism protrusions formed thereon, the prism protrusions each having a vertex pointed toward the diffusion sheet.
2 more elements
A backlight module comprising:
- LEDs;
- a diffusion sheet arranged above light output surfaces of the LEDs;
- and
- a lens arranged above on the diffusion sheet, the lens comprising a light incident surface facing the diffusion sheet, the light incident surface having a series of prism protrusions formed thereon, each prism protrusion having a cross section of an inverted triangle.
1 more element
Dependencies are inferred from the claim text.