Reflection structure, backlight module and display device

Patent metadata

Field	Value
Publication number	US-10132985-B2
Application number	US-201514907773-A
Country	US
Kind code	B2
Filing date	Jun 15, 2015
Priority date	Jan 4, 2015
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

A reflection structure, a backlight module and a display device, the backlight module comprises a light source and a back plate and the light source is disposed on a side edge of the back plate, the reflection structure comprises: a first reflection plate disposed on the back plate, an end close to the light source of which can extend freely; and at least one second reflection plate disposed on an edge of the first reflection plate, wherein a first end of the second reflection plate overlaps the first reflection plate, a second end of the second reflection plate extends toward the side edge of the back plate, and at least one of the first end and the second end of the second reflection plate can extend freely.

First claim

The invention claimed is:

1. A reflection structure for a backlight module, wherein the backlight module comprises a light source, a back plate, and a light guide plate which is disposed on the reflection structure, the light source is disposed on a side edge of the back plate, there is a gap between the light source and a side wall of the light guide plate, wherein the reflection structure comprises:
a first reflection plate disposed on the back plate, an end close to the light source of which can extend freely; and
at least one second reflection plate disposed on an edge of the first reflection plate, wherein a first end of the second reflection plate overlaps the first reflection plate, a second end of the second reflection plate extends toward the side edge of the back plate, at least one of the first end and the second end of the second reflection plate can extend freely, and the second reflection plate is provided with a retractable extendable structure on the end close to the light source,
wherein the retractable extendable structure and the end of the first reflection plate close to the light source are spaced from each other, and the retractable extendable structure is positioned corresponding to the gap only.

2. The reflection structure according to claim 1 , wherein the retractable extendable structure is a hollow structure or a wrinkle structure.

3. The reflection structure according to claim 1 , wherein the second end of the second reflection plate extends from a bottom surface of the light guide plate to a light-exit surface of the light guide plate to form a half-surrounded structure wrapping the light source.

4. The reflection structure according to claim 3 , wherein an end of the half-surrounded structure extends along a direction that is parallel to the light guide plate and covers the gap from a side of the light-exit surface.

5. The reflection structure according to claim 3 , wherein the half-surrounded structure comprises a bent part in a rounded shape.

6. The reflection structure according to claim 1 , wherein an edge of the first reflection plate close to the light source corresponds to a frame shielding area which is disposed in the backlight module.

7. A backlight module, comprising the reflection structure according to claim 1 .

8. The backlight module according to claim 7 , wherein a concave structure is disposed in the back plate, and is configured to contain the first end of the second reflection plate and provide an extending space for the first end.

9. The backlight module according to claim 8 , wherein a half-surrounded structure wrapping the light source is formed by the second reflection plate, and two corners of the half-surrounded structure adjacent to the light source are rounded angles.

10. The backlight module according to claim 7 , wherein a half-surrounded structure wrapping the light source is formed by the second reflection plate, and two corners of the half-surrounded structure adjacent to the light source are rounded angles.

11. The backlight module according to claim 7 , wherein a positioning column configured for installing the second reflection plate is disposed on the back plate.

12. A display device comprising the backlight module according to claim 7 .

13. The backlight module according to claim 8 , wherein a positioning column configured for installing the second reflection plate is disposed on the back plate.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Xu Jian
• Ma Yongda
• Wu Xinyin

Classifications

• F21V7/18

  with provision for folding or collapsing · CPC title

• G02B6/0088

  of the light guide or other optical sheets in the package · CPC title

• G02B6/0031

  Reflecting element, sheet or layer · CPC title

• G02B6/0055 Primary

  Reflecting element, sheet or layer · CPC title