IP Library › Granted Patent US 11,737,217
Granted Patent B2
US 11,737,217 · App. 16/756,162 · Granted Aug 22, 2023

Display device and back plate thereof

Inventor: Zhitao Zhu (Hubei, CN)
Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
H05K5/0017G09F9/301H05K5/03H10K77/111
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Quick Facts
Patent No.
US 11,737,217
App. No.
16/756,162
Granted
Aug 22, 2023
Kind
B2
Abstract

The present invention provides a display device and a back plate thereof, including: a flexible layer having a first surface and a second surface opposite to each other; a framework layer disposed on the first surface, and including at least two framework strips which are spaced apart from each other, wherein the framework layer is made of a material including a polymer; and a filling layer covering a side of the framework layer away from the flexible layer, and embedded in a gap between adjacent ones of the framework strips.

Claims (24)

1. A back plate, comprising:

a flexible layer having a first surface and a second surface opposite to each other;

a framework layer disposed on the first surface, and comprising at least two framework strips which are spaced apart from each other, wherein the framework layer is made of a material comprising a polymer; and

a filling layer covering a side of the framework layer away from the flexible layer, and embedded in a gap between adjacent ones of the framework strips.

2. The back plate according to claim 1 , wherein the framework strips are arranged at intervals along a first direction of the flexible layer and extend in a second direction of the flexible layer.

3. The back plate according to claim 2 , wherein the framework strips are arranged at intervals along the second direction and extend in the first direction, and wherein a grid structure is formed by the framework strips arranged at intervals along the first direction and extending in a second direction and the framework strips arranged at intervals along the second direction and extending in the first direction.

4. The back sheet according to claim 1 , wherein an elastic modulus of the framework layer is greater than an elastic modulus of the filling layer.

5. The back sheet according to claim 1 , wherein an elastic modulus of the flexible layer is smaller than an elastic modulus of the framework layer.

6. The back plate according to claim 1 , wherein the back plate comprises a bending area and a non-bending area, which are disposed adjacent to each other, and a gap between adjacent ones of the framework strips in the bending area is larger than a gap between adjacent ones of the framework strips in the non-bending area.

7. The back sheet according to claim 6 , wherein the framework layer is formed on the first surface by screen printing.

8. The back sheet according to claim 7 , wherein the polymer comprises polyimide, ethylene phthalate, and a cured glue.

9. The back sheet according to claim 1 , wherein the filling layer is made of a material comprising at least one of polyimide and ethylene phthalate.

10. A display device, comprising a panel, a flip-chip thin film substrate, a flexible circuit board, a polarizer, an optical adhesive layer, a cover window, and a back plate, wherein the panel covers the back plate, an end of the panel is connected to the flexible circuit board through the flip-chip thin film substrate, the polarizer covers at least a part of the panel, the optical adhesive layer covers the polarizer, and the cover window covers the optical adhesive layer, wherein the back plate comprises:

a flexible layer having a first surface and a second surface opposite to each other;

a framework layer disposed on the first surface, and comprising at least two framework strips which are spaced apart from each other, wherein the framework layer is made of a material comprising a polymer; and

a filling layer covering a side of the framework layer away from the flexible layer, and embedded in a gap between adjacent ones of the framework strips.

11. The display device according to claim 10 , wherein the framework strips are arranged at intervals along a first direction of the flexible layer and extend in a second direction of the flexible layer.

12. The display device according to claim 11 , wherein the framework strips are arranged at intervals along the second direction and extend in the first direction, and wherein a grid structure is formed by the framework strips arranged at intervals along the first direction and extending in a second direction and the framework strips arranged at intervals along the second direction and extending in the first direction.

13. The display device according to claim 10 , wherein an elastic modulus of the framework layer is greater than an elastic modulus of the filling layer.

14. The display device according to claim 10 , an elastic modulus of the flexible layer is smaller than an elastic modulus of the framework layer.

15. The display device according to claim 10 , wherein the back plate comprises a bending area and a non-bending area, which are disposed adjacent to each other, and a gap between adjacent ones of the framework strips in the bending area is larger than a gap between adjacent ones of the framework strips in the non-bending area.

16. The display device according to claim 15 , wherein the framework layer is formed on the first surface by screen printing.

17. The display device according to claim 16 , wherein the polymer comprises polyimide, ethylene phthalate, and a cured glue.

18. The display device according to claim 17 , wherein the filling layer is made of a material comprising at least one of polyimide and ethylene phthalate.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 15, 2020
From: ZHU, ZHITAO
To: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
Reel/Frame 052401/0636 →
Priority Claims (1)
CN 202010138497.9 · Mar 3, 2020 · national
Continuity (1)
Related Publication 20220312601A1 · Sep 29, 2022