DISPLAY DEVICE AND METHOD OF MANUFACTURING ELECTRONIC DEVICE USING THE SAME

• US 20180076412A1
• Filed: 09/08/2017
• Published: 03/15/2018
• Est. Priority Date: 09/09/2016
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: KIM, Minki, KIM, Taesoo, KIM, Min-seop, JUNG, Younhwan, NAM, Yunoh, KIM, Kijong, KIM, Younggu, BAE, Kyuhan, CHA, Jaelok
• Granted Patent: US 10,490,770 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 1/1637 Details related to the display arrangement, including those related to the mounting of the display in the housing
• CPC Class Codes: H01L 21/022 the layer being a laminate, i.e. composed of sublayers, e.g. stacks of alternating high-k metal oxides adhesion layers or buffer layers H01L21/02304, H01L21/02362
• CPC Class Codes: H01L 21/02304 formation of intermediate layers, e.g. buffer layers, layers to improve adhesion, lattice match or diffusion barriers
• CPC Class Codes: H01L 21/823462 with a particular manufacturing method of the gate insulating layers, e.g. different gate insulating layer thicknesses, particular gate insulator materials or particular gate insulator implants
• CPC Class Codes: H04M 1/0266 for a display module assembly
• CPC Class Codes: H04M 1/0277 for a printed circuit board assembly
• CPC Class Codes: H10K 50/84 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass

Abstract

A display device includes a window member, a display module, a protective cover, and a coupling structure. The display module includes a non-bending area on a rear surface of the window member and a bending area bent from the non-bending area. The protective cover is on a rear surface of the display module to cover the bending area of the display module. The coupling structure couples the display module to the protective cover. The display module is coupled to other components of an electronic device after the protective cover is detached from the display module.

Claims

1. A display device comprising:

a window member;

a display module comprising a non-bending area overlapped with a display area of the window member and a bending area bent from the non-bending area;

a protective cover on a rear surface of the display module to cover the bending area of the display module; and

a coupling structure coupling the display module to the protective cover.

2. The display device of claim 1, wherein the coupling structure comprises a first adhesive member comprising a first adhesive surface attached to the display module and a second adhesive surface attached to the protective cover.

3. The display device of claim 2, wherein the first adhesive member comprises a first part overlapped with the protective cover and a second part extending from the first part and protruding outward from the window member when viewed in a plan view.

4. The display device of claim 3, wherein the first part comprises a base layer and first and second adhesive layers respectively on front and rear surfaces of the base layer, and the second part comprises a base layer integrally formed with the base layer of the first part.

5. The display device of claim 3, wherein each of the first part and the second part comprises a base layer and first and second adhesive layers respectively on both front and rear surfaces of the base layer, and the second part further comprises cover layers respectively on the first adhesive layer and the second adhesive layer.

6. The display device of claim 3, wherein the window member comprises a base member and a bezel layer on a rear surface of the base member, the bezel layer comprises at least one hole defined therethrough, and the first adhesive member covers the at least one hole of the bezel layer.

7. The display device of claim 2, wherein the protective cover comprises:

a roof part spaced apart from the rear surface of the display module to face the rear surface of the display module;

wall parts bent from the roof part; and

combine parts bent from at least a portion of the wall parts to face the rear surface of the display module,

wherein the first adhesive member attaches one of said combine parts to the rear surface of the display module.

8. The display device of claim 7, wherein the protective cover further comprises a holding part connected to at least one of the roof part and the wall parts, and the holding part protrudes outward from the window member when viewed in a plan view.

9. The display device of claim 2, wherein the first adhesive surface has an adhesive force greater than an adhesive force of the second adhesive surface.

10. The display device of claim 2, wherein the first adhesive member comprises a first adhesive layer comprising the first adhesive surface, a second adhesive layer attached to the first adhesive layer comprises the second adhesive surface, and an adhesive force of each of the first and second adhesive surfaces is greater than each of an adhesive force of an inner adhesive surface of the first adhesive layer and an adhesive force of an inner adhesive surface of the second adhesive layer, wherein the inner adhesive surface of the second adhesive layer is attached to the inner adhesive surface of the first adhesive layer.

11. The display device of claim 1, further comprising a driving control module on the rear surface of the display module and connected to the bending area of the display module, wherein the protective cover further covers the driving control module.

12. The display device of claim 11, wherein the driving control module comprises:

a main circuit board;

a flexible circuit board connecting the main circuit board to the display module; and

a protective can coupled to the main circuit board to cover electronic parts mounted on the main circuit board, and wherein the coupling structure further comprises a second adhesive member attaching the protective can to the protective cover.

13. The display device of claim 1, wherein the coupling structure comprises an adhesive sheet comprising a first adhesive part attached to the protective cover, a second adhesive part attached to the display module, and a cutting line defining a boundary between the first adhesive part and the second adhesive part.

14. The display device of claim 1, wherein the protective cover comprises a hook part coupled to an edge of the window member, the hook part comprising a groove defined therein, and wherein the edge of the window member is configured to be inserted into the groove.

15. The display device of claim 1, wherein the display module comprises:

a display panel on a rear surface of the window member comprising the non-bending area and the bending area;

a touch sensing unit located between the window member and the display panel; and

a support panel on the rear surface of the display panel.

16. The display device of claim 15, wherein the display module further comprises an adhesive member to couple the rear surface of the display panel and the support panel, the support panel comprising at least one opening formed therethrough to expose a portion of the adhesive member, wherein the coupling structure comprises the portion of the exposed adhesive member, and a portion of the protective cover is located in the at least one opening of the support panel and attached to the coupling structure.

17. The display device of claim 15, wherein the display panel comprises:

a base layer located in the non-bending area and the bending area;

a circuit layer on a front surface of the base layer and located in the non-bending area and the bending area;

an element layer on a front surface of the circuit layer to overlap with the non-bending area;

an encapsulation layer on the element layer; and

a protective film on a rear surface of the base layer.

18. The display device of claim 17, wherein the bending area comprises:

a curvature area connected to the non-bending area; and

a pad area connected to the curvature area, facing the non-bending area, and spaced apart from the non-bending area, and wherein the protective film is located in the non-bending area and the pad area and not in the curvature area.

19. The display device of claim 18, further comprising a stress control film on a front surface of the display panel in the curvature area and not overlapped with the display area of the window member.

20. The display device of claim 1, wherein the coupling structure comprises a protrusion structure and an insertion structure defining a coupling recess or a coupling hole into which the protrusion structure is inserted, wherein one of the protrusion structure and the insertion structure is connected to the protective cover, and the other of the protrusion structure and the insertion structure is connected to the display module.

21. A method of manufacturing an electronic device, the method comprising:

providing a display device comprising a window member, a display module, a protective cover covering a bending area of the display module, and a coupling structure coupling the display module and the protective cover;

detaching the protective cover from the display module; and

coupling the display module to a component of the electronic device.

22. The method of claim 21, wherein the display device further comprises a driving control module connected to the display module, and the component of the electronic device comprises a mother board electrically connected to the driving control module through a connector.

23. The method of claim 21, wherein the coupling structure comprises an adhesive member to attach the display module to the protective cover, and wherein when the protective cover is detached from the display module, the adhesive member remains attached to display module.

24. The method of claim 21, wherein the component of the electronic device comprises a bracket or an external case physically coupled to the display module.

25. The method of claim 24, wherein the coupling structure comprises an adhesive member to attach the display module to the protective cover, the adhesive member comprises a plurality of adhesive layers, and wherein when the protective cover is detached from the display module, some of the adhesive layers are removed and remain attached to the protective cover.

26. The method of claim 25, wherein when the protective cover is detached from the display module, other adhesive layers that are not removed with the protective cover are configured to couple the display module to a bracket or an external case during the coupling of the display module and the component of the electronic device.