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US 2013/0279191 A1Published application
Light guide plate and corresponding backlight module
AssigneeShenzhen China Star Optoelectronics Technology Co., Ltd.
InventorKuangyao Chang
Life of this patent
Estimating the term…
Abstract
The present invention relates to a light guide plate and a corresponding backlight module. The light guide plate has a plate body, a light-exiting prism structure and a reflecting prism structure. The reflecting prism structure is mounted on a reflecting area on a light-exiting surface of the plate body. The light guide plate and the corresponding backlight module can reduce light leakage at the junction between the light guide and a fixing plastic frame by the reflecting prism structure mounted at sides of the light guide plate.
Claims15
A light guide plate comprising:
- a plate body having an incident surface, a light-exiting surface being perpendicular to the incident surface and two side surfaces being perpendicular to both of the incident surface and the light-exiting surface, wherein the light-exiting surface including a reflecting area and a non-reflecting area, and the reflecting area is disposed at two ends of the light-exiting surface that are close to the side surfaces;
- a light-exiting prism structure mounted in the non-reflecting area and including a plurality of light-exiting strip-shaped prisms being parallel to each other, wherein a length direction of each of the light-exiting strip-shaped prisms is perpendicular to the incident surface and parallel to the side surfaces;
- and
- a reflecting prism structure mounted in the reflecting area of the light-exiting surface for reflecting lights back to the plate body;
- wherein
- the reflecting prism structure is a plane mirror;
- and
- the light guide plate is made by a hot-embossing process or a roll-forming process.
5 more elements
A light guide plate comprising:
- a plate body having an incident surface, a light-exiting surface being perpendicular to the incident surface and two side surfaces being perpendicular to both of the incident surface and the light-exiting surface, wherein the light-exiting surface including a reflecting area and a non-reflecting area, and the reflecting area is disposed at two ends of the light-exiting surface that are close to the side surfaces;
- a light-exiting prism structure mounted in the non-reflecting area and including a plurality of light-exiting strip-shaped prisms being parallel to each other, wherein a length direction of each of the light-exiting strip-shaped prisms is perpendicular to the incident surface and parallel to the side surfaces;
- and
- a reflecting prism structure mounted in the reflecting area of the light-exiting surface for reflecting lights back to the plate body.
1 more element
A backlight module comprising:
- a light source;
- a light guide plate mounted beside a light-emitting surface of the light source and having:
- a plate body having an incident surface, a light-exiting surface being perpendicular to the incident surface and two side surfaces being perpendicular to both of the incident surface and the light-exiting surface, wherein the light-exiting surface including a reflecting area and a non-reflecting area, and the reflecting area is disposed at two ends of the light-exiting surface that are close to the side surfaces;
- a light-exiting prism structure mounted in the non-reflecting area and including a plurality of light-exiting strip-shaped prisms being parallel to each other, wherein a length direction of each of the light-exiting strip-shaped prisms is perpendicular to the incident surface and parallel to the side surfaces;
- and
- a reflecting prism structure mounted in the reflecting area of the light-exiting surface for reflecting lights back to the plate body;
- and
- a fixing plastic frame used to fix the light guide plate via a part of the light guide plate that corresponds to the reflecting area.
5 more elements
Dependencies are inferred from the claim text.