Backlight module and display device including the same

Patent metadata

Field	Value
Publication number	US-11487156-B2
Application number	US-202117410456-A
Country	US
Kind code	B2
Filing date	Aug 24, 2021
Priority date	Sep 14, 2020
Publication date	Nov 1, 2022
Grant date	Nov 1, 2022

Abstract

A backlight module includes: a back plate; an optical film disposed on the back plate; and a support module disposed on the back plate and between the back plate and the optical film, wherein the support module includes a base, and an elasticity coefficient of the base is greater than or equal to 0.4 kgf/mm and smaller than or equal to 0.6 kgf/mm.

First claim

What is claimed is:

1. A backlight module, comprising:
a back plate;
an optical film disposed on the back plate; and
a support module disposed on the back plate and between the back plate and the optical film,
wherein the support module includes a base, and an elasticity coefficient of the base is greater than or equal to 0.4 kgf/mm and smaller than or equal to 0.6 kgf/mm,
wherein the base comprises a first part and a second part, the first part and the second part are connected to form a hollow structure, and the first part has a curved structure.

2. The backlight module of claim 1 , wherein the support module further comprises a support unit, and the support unit and the first part of the base are assembled.

3. The backlight module of claim 1 , wherein the support module further comprises a positioning component, and the positioning component is connected to the second part.

4. The backlight module of claim 1 , wherein a curvature radius of the curved structure is greater than or equal to 4 mm and smaller than or equal to 8 mm.

5. The backlight module of claim 2 , wherein the curved structure includes two recessed portions and two arc portions, in which the two recessed portions are respectively disposed on two sides of the support unit, and are respectively connected to the two arc portions.

6. The backlight module of claim 5 , wherein a curvature radius of each of the two recessed portions is greater than or equal to 6 mm and smaller than or equal to 8 mm.

7. The backlight module of claim 5 , wherein a curvature radius of each of the two arc portions is greater than or equal to 4 mm and smaller than or equal to 6 mm.

8. The backlight module of claim 5 , wherein, in a normal direction of the back plate, a shortest distance from one of the recessed portions to the second part is defined as a first distance, and half of a length of the first part in a length direction of the base is defined as a first length, in which a ratio of the first distance to the first length is greater than or equal to 0.23 and smaller than or equal to 0.37.

9. The backlight module of claim 3 , further comprising a reflective sheet disposed on the back plate, wherein the reflective sheet is provided with an opening disposed corresponding to the support module.

10. The backlight module of claim 9 , wherein the reflective sheet is disposed under the positioning component for being positioned by the positioning component.

11. The backlight module of claim 1 , wherein the second part has an unequal width along a direction perpendicular to a normal direction of the back plate.

12. The backlight module of claim 1 , wherein the second part further comprises a plurality of holes.

13. The backlight module of claim 1 , further comprising a light source disposed in a chamber formed by the optical film and the back plate, wherein, in a normal direction of the back plate, a projection of the light source on the back plate and a projection of the support module on the back plate do not overlap.

14. The backlight module of claim 5 , wherein the recessed portion is a portion formed by the first part bent in a direction toward to the back plate, and the arc portion is an arc-shaped area in the first part that is connected to one of the recessed portions and the second part.

15. The backlight module of claim 2 , wherein the curved structure comprises two protruding portions and two arc portions, in which the two protruding portions are respectively disposed on two sides of the support unit, and are respectively connected to the two arc portions.

16. The backlight module of claim 15 , wherein a curvature radius of each of the two protruding portions is greater than or equal to 6 mm and smaller than or equal to 8 mm.

17. The backlight module of claim 15 , wherein a curvature radius of each of the two arc portions is greater than or equal to 4 mm and smaller than or equal to 6 mm.

18. The backlight module of claim 15 , wherein in a normal direction of the back plate, a shortest distance from one of the protruding portions to the second part is defined as a second distance, and half of a length of the first part in a length direction of the base is defined as a first length, wherein a ratio of the second distance to the first length is greater than or equal to 0.23 and smaller than or equal to 0.37.

19. The backlight module of claim 15 , wherein the protruding portion is a portion formed by the first part protruding in a direction away from the back plate, and the arc portion is an arc-shaped portion in the first part that is connected to one of the protruding portions and the second part.

Assignees

• Innolux Corp

Inventors

• Wang Ming-Tien
• Tsai Chin-Tu
• Hsu Chih-Hung
• Liu Chih-Hung
• Juan Hsiang-Yu

Classifications

• G02F1/133603 Primary

  with LEDs · CPC title

• G02F1/133605

  including specially adapted reflectors · CPC title

• G02F1/133608 Primary

  including particular frames or supporting means · CPC title

• G02F1/133308 Primary

  Support structures for LCD panels, e.g. frames or bezels · CPC title