Support frame with concave groove, manufacturing method thereof, backlight assembly and display device

Patent metadata

Field	Value
Publication number	US-12197077-B2
Application number	US-202117913910-A
Country	US
Kind code	B2
Filing date	Oct 28, 2021
Priority date	Mar 9, 2021
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

Abstract

There is provided a support frame ( 2 ), including: a first support structure ( 3 ) having a first support surface provided with a concave groove ( 301 ); and a light-transmitting structure ( 4 ) on the first support surface, including: an engaging portion ( 401 ) and a light-transmitting portion ( 402 ), which are connected to each other, with the engaging portion ( 401 ) located in the groove ( 301 ) and fixed with the groove ( 301 ) by engagement, the light-transmitting portion ( 402 ) located outside the groove ( 301 ) and having a second support surface on a side of the light-transmitting portion ( 402 ) opposite to the engaging portion ( 401 ), and the second support surface configured to support a display panel ( 1 ).

First claim

What is claimed is:

1. A support frame, comprising:
a first support structure having a first support surface provided with a concave groove; and
a light-transmitting structure on the first support surface, comprising: an engaging portion and a light-transmitting portion, which are connected to each other, with the engaging portion located in the groove and fixed with the groove by engagement, the light-transmitting portion located outside the groove and having a second support surface on a side of the light-transmitting portion opposite to the engaging portion, and the second support surface configured to support a display panel;
wherein the first support structure and the light-transmitting structure are arranged along a first direction, an orthogonal projection of a top opening of the groove on a plane perpendicular to the first direction has a first area, and an orthogonal projection of the whole groove on the plane perpendicular to the first direction has a second area which is larger than the first area; and
wherein an area of a cross section of the groove gradually decreases along the first direction and a direction from a bottom of the groove to a top of the groove, and the cross section is perpendicular to the first direction.

2. The support frame of claim 1 , wherein a longitudinal section of the groove is trapezoidal, and is parallel to the first direction and perpendicular to an extending direction of the groove.

3. The support frame of claim 1 , wherein the first support surface is in a shape of ring;
the groove is in a shape of ring; or
a plurality of grooves are provided instead of the groove and are arranged in a shape of ring.

4. The support frame of claim 1 , wherein the first support surface is a plane; or
at least part of the first support surface is a concave cambered surface.

5. The support frame of claim 1 , wherein the second support surface is a plane.

6. The support frame of claim 1 , wherein the first support structure and the light-transmitting structure are arranged along a first direction; and
a minimum distance between the second support surface and the first support surface along the first direction is greater than or equal to 1 mm.

7. The support frame of claim 1 , wherein a material of the engaging portion is the same as that of the light-transmitting portion, and the engaging portion and the light-transmitting portion have a one-piece structure.

8. The support frame of claim 7 , wherein the material of the engaging portion and the light-transmitting portion comprises plastic.

9. A backlight assembly, comprising: the support frame of claim 1 .

10. A display device, comprising:
a backlight assembly, which is the backlight assembly of claim 9 ; and
a display panel fixed on the second support surface with a fixing glue.

11. A manufacturing method of a support frame, the support frame being the support frame of claim 1 , the manufacturing method comprising:
forming the first support structure, which has the first support surface provided with the concave groove; and
forming the light-transmitting structure on the first support surface, with the light-transmitting structure comprising: the engaging portion and the light-transmitting portion, which are connected to each other, the engaging portion located in the groove and fixed with the groove by engagement, the light-transmitting portion located outside the groove and having the second support surface on the side of the light-transmitting portion opposite to the engaging portion, and the second support surface configured to support the display panel.

12. The manufacturing method of claim 11 , wherein the engaging portion and the light-transmitting portion are made of a same material comprising plastic; and
forming the light-transmitting structure on the first support surface comprises:
forming the light-transmitting structure on the first support surface by an injection molding process or a dispensing and curing process.

13. The manufacturing method of claim 12 , wherein the first support structure is made of a metal material; and
forming the first support structure comprises:
forming the first support structure by an extrusion molding process.

Assignees

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

Inventors

• Bu Zhanchang
• Shi Haijun
• Wang Bochang

Classifications

• G02F2202/28

  Adhesive materials or arrangements · CPC title

• G02F1/133314

  Back frames · CPC title

• G02F1/133317

  Intermediate frames, e.g. between backlight housing and front frame · CPC title

• G02F1/133308

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

• G02F1/1336

  Illuminating devices · CPC title