DISPLAY MODULE AND METHOD OF MANUFACTURING SAME

• US 20200136085A1
• Filed: 11/02/2018
• Published: 04/30/2020
• Est. Priority Date: 09/20/2018
• Status: Active Grant

• Current Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: WANG, Haifeng, QIang, TAO
• Granted Patent: US 11,011,729 B2
• Time in Patent Office: Days
• CPC Class Codes: H05K 1/147 at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit H05K1/148 takes precedence
• CPC Class Codes: H05K 1/189 characterised by the use of a flexible or folded printed circuit H05K3/326 takes precedence
• CPC Class Codes: H05K 2201/056 Folded around rigid support or component
• CPC Class Codes: H05K 2201/10128 Display
• CPC Class Codes: H05K 3/361 Assembling flexible printed circuits with other printed circuits
• CPC Class Codes: H05K 5/0017 with operator interface units
• CPC Class Codes: H05K 5/03 Covers
• CPC Class Codes: H10K 2102/311 Flexible OLED
• CPC Class Codes: H10K 50/8426 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 50/86 Arrangements for improving contrast, e.g. preventing reflection of ambient light
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens
• CPC Class Codes: H10K 59/8794 Arrangements for heating and cooling
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass
• CPC Class Codes: H10K 77/111 Flexible substrates
• CPC Class Codes: Y02E 10/549 Organic PV cells
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A display module and a manufacturing thereof are provided. The display module includes a display panel, a first back plate, a second back plate and support layer and a fixing layer. The fixing layer includes a body and at least one protrusion. The display panel includes a first region, a second region and a bending region. At least one via hole is defined in the second back plate and the second region. The second region is bent to a predetermined position on the second back plate with the at least one protrusion fittingly engaged in the at least one via hole.

Claims

1. A display module, comprising:

a display panel comprising a first region, a second region, and a bending region connecting the first region to the second region, wherein the first region is provided with a pixel array, the second region comprises a terminal region, and the bending region has a radius greater than 0.4 mm and less than 0.6 mm;

a back plate layer provided on a surface of one side of the display panel, wherein the back plate layer comprises a first back plate and a second back plate, and the second back plate is located on a surface of the second region;

a support layer provided between the first back plate and the second back plate, wherein the first back plate and the second back plate are fixed by the support layer, the support comprises a foam layer, a graphite layer, and a copper layer; and

a fixing layer provided between the second back plate and the support layer, wherein the fixing layer comprises a body and at least one protrusion disposed on the body;

wherein at least one via hole is provided in the second back plate and the second region, the at least one via hole matches the at least one protrusion, and the second region is bent to a predetermined position on the second back plate with the at least one protrusion fittingly engaged in the at least one via hole.

2. The display module according to claim 1, wherein the second region comprises a substrate and a functional device disposed on the substrate, and the at least one via hole is disposed outside the functional device.

3. The display module according to claim 1, wherein the fixing layer comprises two protrusions, and the protrusions are distributed at two ends of a surface of the body.

4. The display module according to claim 1, wherein the body of the fixing layer is provided at a surface of the second back plate and does not protrude beyond a boundary of the second back plate.

5. The display module according to claim 1, wherein the at least one protrusion is a columnar protrusion, and a height of the columnar protrusion is not greater than a depth of the at least one via hole.

6. A display module, comprising:

a display panel comprising a first region, a second region, and a bending region connecting to the first region and the second region, wherein the first region is provided with a pixel array, and the second region comprises a terminal region;

a back plate layer provided on a surface of one side of the display panel, wherein the back plate layer comprises a first back plate and a second back plate, and the second back plate is located on a surface of the second region;

a support layer provided between the first back plate and the second back plate, wherein the first back plate and the second back plate are fixed by the support layer, the support comprises a foam layer, a graphite layer, and a copper layer; and

a fixing layer provided between the second back plate and the support layer, wherein the fixing layer comprises a body and at least one protrusion disposed on the body;

wherein at least one via hole is provided in the second back plate and the second region, the at least one via hole matches the at least one protrusion, and the second region is bent to a predetermined position on the second back plate with the at least one protrusion fittingly engaged in the at least one via hole.

7. The display module according to claim 6, wherein the second region comprises a substrate and a functional device disposed on the substrate, and the at least one via hole is disposed outside the functional device.

8. The display module according to claim 6, wherein the fixing layer comprises two protrusions, and the protrusions are distributed at two ends of a surface of the body.

9. The display module according to claim 6, wherein the body of the fixing layer is provided at a surface of the second back plate and does not protrude beyond a boundary of the second back plate.

10. The display module according to claim 6, wherein the at least one protrusion is a columnar protrusion, and a height of the columnar protrusion is not greater than a depth of the at least one via hole.

11. The display module according to claim 6, wherein the terminal region comprises an outer lead bonding region.

12. The display module according to claim 6, wherein the display module further comprises:

a touch control layer provided on the display panel that facing away from a side of the first back plate, wherein the touch control layer comprises a touch control electrode layer and a touch flexible circuit board;

an optical adhesive layer provided between the first region and the touch control electrode layer;

a polarizing layer provided on the touch control electrode layer;

a cover plate provided on the polarizing layer;

a first flexible circuit board provided on a surface of the second region facing away from a side of the second back plate; and

a second flexible circuit board attached to the first flexible circuit board.

13. The display module according to claim 6, wherein a first driving circuit is attached to the first flexible circuit board.

14. The display module according to claim 6, wherein a second driving circuit is attached to the second flexible circuit board.

15. A method of manufacturing a display module, comprising:

step S10 providing a display panel, wherein the display panel comprises a first region, a second region, and a bending connecting the first region to the second region, and the first region is provided with a pixel array;

step S20 attaching a first back plate to a surface of the first region, wherein a second back plate is provided on a surface of the second region to form a back plate layer comprising the first back plate and the second back plate;

step S30 providing a support layer and a fixing layer in sequence on a side of the first back plate facing away from the display panel, wherein the fixing layer comprises a body and at least one protrusion disposed on the body; and

step S40 defining at least one via hole matching the at least one protrusion at the second back plate and a target position of the second region, wherein the bending region is bent with the at least one protrusion fittingly engaged in the at least one via hole.

16. The method of manufacturing a display module according to claim 15, wherein the at least one via hole penetrate through the second back plate and the second region.

17. The method of manufacturing a display module according to claim 15, wherein the at least one via hole is defined at the second back plate and the second region by laser cutting.

18. The method of manufacturing a display module according to claim 15, wherein the second region comprises a terminal region.

19. The method of manufacturing a display module according to claim 15, wherein the display module comprises:

a touch control layer provided on the display panel that facing away from a side of the first back plate, wherein the touch control layer comprises a touch control electrode layer and a touch flexible circuit board;

an optical adhesive layer provided between the first region and the touch control electrode layer;

a polarizing layer provided on the touch control electrode layer;

a cover plate provided on the polarizing layer;

a first flexible circuit board provided on a surface of the second region facing away from a side of the second back plate; and

a second flexible circuit board attaching to the first flexible circuit board.

20. The method of manufacturing a display module according to claim 15, wherein a first driving circuit is attached to the first flexible circuit board.