DISPLAY DEVICE AND METHOD OF MANUFACTURING DISPLAY DEVICE

• US 20200136044A1
• Filed: 01/02/2020
• Published: 04/30/2020
• Est. Priority Date: 07/13/2017
• Status: Active Grant

• Current Assignee: Japan Display Incorporated
• Original Assignee: Japan Display Incorporated
• Inventors: NAKAGAWA, Takuya
• Granted Patent: US 10,854,817 B2
• Time in Patent Office: Days
• CPC Class Codes: B29C 41/08 Coating a former, core or other substrate by spraying or fluidisation, e.g. spraying powder spray-up of reinforcing fibres B29C70/305
• CPC Class Codes: B29C 41/42 Removing articles from moulds, cores or other substrates B29C33/444 and B29C37/0017 take precedence
• CPC Class Codes: B29K 2079/08 PI, i.e. polyimides or derivatives thereof
• CPC Class Codes: B29L 2031/3475 Displays, monitors, TV-sets, computer screens
• CPC Class Codes: H10K 2102/311 Flexible OLED
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/1201 Manufacture or treatment
• CPC Class Codes: H10K 59/873 Encapsulations
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass
• CPC Class Codes: H10K 71/80 using temporary substrates
• 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 method of manufacturing a display device according to an embodiment of the present invention includes in order: forming a sacrificial layer in a predetermined position on a substrate; forming a base material containing resin on the substrate with the sacrificial layer therebetween; forming a display region including a plurality of pixels on the base material; irradiating the substrate with laser light from a side of the substrate on which the base material is not formed; and peeling the substrate from the base material. A region where the base material and the substrate are in contact with each other is present at least a part of an edge portion of the base material.

Claims

1. A flexible device comprising:

a flexible base material including a first surface and a second surface opposite to the first surface; and

a thin film transistor on the first surface, wherein

the second surface has a first area and a second area,

the second surface of the second area is rougher than the second surface of the first area.

2. The flexible device according to claim 1, wherein

the flexible base material includes a first outermost edge and a second outermost edge,

the first outermost edge is not an extension of the second outermost edge, and

the first outermost edge and the second outermost edge are at the first area.

3. The flexible device according to claim 2, wherein

the first outermost edge and the second outermost edge are straight

4. The flexible device according to claim 1, further comprising a display region and a frame region surrounding the display region, wherein

the first area overlaps the frame region in a plan view.

5. The flexible device according to claim 4, wherein

the second area overlaps the display region in a plan view.

6. The flexible device according to claim 4, further comprising a component mounting region, wherein

the first area overlaps the component mounting region in a plan view.

7. The flexible device according to claim 6, wherein

the component mounting region is in the frame region.

8. The flexible device according to claim 1, further comprising a display region and a frame region surrounding the display region, wherein

the first area overlaps the display region in a plan view.

9. The flexible device according to claim 8, wherein

the display region is between the first outermost edge and the second outermost edge.

10. The flexible device according to claim 8, wherein

the second area overlaps the frame region in a plan view.

11. The flexible device according to claim 8, further comprising a component mounting region, wherein

the first area overlaps the component mounting region in a plan view

12. The flexible device according to claim 1, wherein

the second surface has a third area separating apart from the first area, and

the second surface of the second area is rougher than the third surface of the second area.

13. The flexible device according to claim 1, wherein

the second surface has a fourth area separating apart from the second area, and

the second surface of the fourth area is rougher than the second surface of the first area.