Backlight module
AssigneeCoretronic Corporation
InventorsChien-Hsiang Chen, Shi-Chi Hou
Life of this patent
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Abstract
A backlight module includes a light guide plate which has a first sidewall and two opposite second sidewalls extending transversely of the first sidewalls. The first and second sidewalls interconnect two opposite first and second faces. Alight source is disposed at one of the second sidewalls and projects light rays onto the first sidewall at an oblique angle. A first reflection layer is disposed over the first sidewall, and a second reflection layer is disposed over the second face. Total reflection of light into the light guide plate from the first sidewall and second face increases brightness and enhances evenness of brightness.
Claims15
A backlight module comprising:
- a light guide plate including opposite first and second faces, at least one first sidewall, and two opposite second sidewalls, said first and second sidewalls being connected to and extending between said first and second faces, said second sidewalls extending transversely at two opposite ends of said first sidewall;
- at least one light source disposed proximate to at least one of said second sidewalls and projecting light rays onto said first sidewall;
- and
- a first reflection layer disposed over said first sidewall for reflecting the light rays into said light guide plate.
A side-light type backlight module comprising:
- a light guide plate including at least one first sidewall which is provided with a reflection layer, and two opposite second sidewalls perpendicular to said first sidewall, and at least one light source disposed at one of said second sidewalls and projecting light rays onto said reflection layer along a direction oblique to said reflection layer, wherein the reflection area of the backlight module and uniformity of the reflected light may be enhanced through the pre-designed synchronous emission and projection of light onto the reflection layer by said light sources and through the reflection of light by said reflection layer.
Dependencies are inferred from the claim text.