Backlight module and display panel

Patent metadata

Field	Value
Publication number	US-11262496-B2
Application number	US-202017254570-A
Country	US
Kind code	B2
Filing date	Jun 30, 2020
Priority date	Jul 4, 2019
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

The present disclosure relates to the field of display technology and, in particular, to a backlight module and a display panel. The backlight module may include a backplane, an optical film, and a light emitting plate. The backplane includes a bottom plate, a first side plate, and a second side plate, where the first side plate and the second side plate are arranged at two opposite sides of the bottom plate in a first direction, and both have support parts protruding toward an inner side of the back board. The optical film is arranged on a side of the support part away from the bottom plate, and has two opposite ends supported on the support parts. The light emitting part is arranged on the bottom plate and positioned at a side of the support part facing the bottom plate, and a light emitting direction of the light emitting part is toward the optical film.

First claim

What is claimed is:

1. A backlight module, comprising:
a backplane comprising a bottom plate, a first side plate, and a second side plate, wherein the first side plate and the second side plate extend from a surface of the bottom plate in a direction away from the bottom plate and are arranged at two opposite sides of the bottom plate in a first direction, and both have support parts protruding toward an inner side of the backplane;
an optical film arranged on a side of the support part away from the bottom plate, and having two opposite ends supported on the support parts; and
a light emitting part arranged on the bottom plate and positioned at a side of the support part facing the bottom plate, wherein a light emitting direction of the light emitting part is toward the optical film, wherein:
the backplane further comprises a plurality of first auxiliary support plates and a plurality of second auxiliary support plates, and the first auxiliary support plate and the second auxiliary support plate are arranged at two opposite sides of the bottom plate in a second direction which is perpendicular to the first direction;
each of the first auxiliary support plates and the second auxiliary support plates comprises a connection part and an auxiliary support part, the connection part has one end coupled to the bottom plate and extends in the direction away from the bottom plate, and auxiliary support part has one end coupled to the other end of the connection part in an extending direction of the connection part and extends toward the inner side of the backplane; and
the connection parts of the plurality of first auxiliary support plates are spaced apart from each other in the first direction through a gap, and the connection parts of the plurality of second auxiliary support plates are spaced apart from each other in the first direction through a gap.

2. The backlight module according to claim 1 , wherein:
each of the first side plate and the second side plate comprises a vertical plate and a bent plate which are integrally formed;
the vertical plate has one end coupled to the bottom plate and extends in the direction away from the bottom plate; and
the bent plate has one end coupled to the bottom plate, and is bent toward the inner side of the backplane to form the support part.

3. The backlight module according to claim 2 , wherein:
the bent plate comprises a first part and a second part;
the first part has one end coupled to the bottom plate and extends in the direction away from the bottom plate; and
the second part has one end coupled to the other end of the first part in an extending direction of the first part and extends toward the inner side of the backplane to form the support part.

4. The backlight module according to claim 2 , wherein a distance between the other end of the vertical plate in the extending direction of the vertical plate and the bottom plate is greater than a distance between the surface of the support part away from the bottom plate and the bottom plate.

5. The backlight module according to claim 2 , wherein each of the first side plate and the second side plate comprises a plurality of vertical plates and a plurality of bent plates, and the plurality of vertical plates and the plurality of bent plates are arranged alternately.

6. The backlight module according to claim 1 , wherein:
a surface of the auxiliary support part away from the bottom plate and the surface of the support part away from the bottom plate are located on a same plane.

7. The backlight module according to claim 6 , wherein the auxiliary support part and the support part have a same thickness in a direction perpendicular to the surface of the bottom plate.

8. The backlight module according to claim 1 , wherein a gap is positioned between the support part and the light emitting part in a direction perpendicular to the surface of the bottom plate.

9. The backlight module according to claim 1 , wherein a distance between the optical film and the light emitting part is 2.5 mm.

10. The backlight module according to claim 1 , further comprising a transparent support plate arranged on the support part and positioned at a side of the optical film facing the support part.

11. The backlight module according to claim 1 , wherein the optical film comprises a quantum dot sheet, a diffusion sheet, a prism sheet, and a reflective polarizing sheet that are sequentially stacked on the support part.

12. The backlight module according to claim 1 , wherein the light emitting part comprises a circuit board and a plurality of light emitting diodes, the circuit board is arranged on the bottom plate, and each of the light emitting diodes is arranged at a side of the circuit board away from the bottom plate.

13. The backlight module according to claim 2 , wherein the optical film is arranged in the first direction, and is arranged between the vertical plate of the first side plate and the vertical plate of the second side plate.

14. A display panel comprising a display module, wherein the display module comprises:
a backlight module, comprising:
a backplane comprising a bottom plate, a first side plate, and a second side plate, wherein the first side plate and the second side plate extend from a surface of the bottom plate in a direction away from the bottom plate, and are arranged at two opposite sides of the bottom plate in a first direction, and both have support parts protruding toward an inner side of the backplane;
an optical film arranged on a side of the support part away from the bottom plate, and having two opposite ends supported on the support parts; and
a light emitting part arranged on the bottom plate and positioned at a side of the support part facing the bottom plate, wherein a light emitting direction of the light emitting part is toward the optical film; and

a display screen arranged at a side of the optical film away from the support part, wherein:
the backplane further comprises a plurality of first auxiliary support plates and a plurality of second auxiliary support plates, and the first auxiliary support plate and the second auxiliary support plate are arranged at two opposite sides of the bottom plate in a second direction which is perpendicular to the first direction;
each of the first auxiliary support plates and the second auxiliary support plates comprises a connection part and an auxiliary support part, the connection part has one end coupled to the bottom plate and extends in the direction away from the bottom plate, and auxiliary support part has one end coupled to the other end of the connection part in an extending direction of the connection part and extends toward the inner side of the backplane; and
the connection parts of the plurality of first auxiliary support plates are spaced apart from each other in the first direction through a gap, and the connection parts of the plurality of second auxiliary support plates are spaced apart from each other in the first direction through a gap.

15. The display panel according to claim 14 , wherein:
the display module further comprises an edging adhesive tape;
the edging adhesive tape comprises a top edging adhesive tape and a bottom edging adhesive tape that are arranged oppositely, and a side edging adhesive tape connecting the top edging adhesive tape and the bottom edging adhesive tape; and
the top edging adhesive tape is adhered to a top edge of the display screen, the bottom edging adhesive tape is adhered to a bottom edge of the bottom plate, and the side edging adhesive tape is adhered to side surfaces of the display screen and the backlight modu

Assignees

• Beijing Boe Optoelectronics Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Li Wenyang
• Han Rui
• Cui Dong
• Tong Zeyuan
• Ma Qing
• Leng Shouyang
• Guan Dong
• Wang Fengping
• Chi Weining
• Zhang Zhipeng
• Zhai Yue
• Zhang Zan
• Wang Yaoyao
• Wang Xiaoxia

Classifications

• G02B6/0088 Primary

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

• G02B6/0068

  Arrangements of plural sources, e.g. multi-colour light sources · CPC title

• G02F1/133608 Primary

  including particular frames or supporting means · CPC title

• G09F9/301

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title

• G02B6/009

  of the light source in the package (G02B6/0021 takes precedence) · CPC title