Display device using a flexible substrate with alignment marks for folding

Patent metadata

Field	Value
Publication number	US-11315997-B2
Application number	US-202016826389-A
Country	US
Kind code	B2
Filing date	Mar 23, 2020
Priority date	Oct 4, 2017
Publication date	Apr 26, 2022
Grant date	Apr 26, 2022

Abstract

Display device includes a flexible substrate, a plurality of pixels disposed on a first surface of flexible substrate, and a plurality of alignment marks disposed along one side of the flexible substrate and identified each other. The plurality of alignment marks may be arranged in the same layer. When the plurality of pixels includes thin film transistor, the plurality of alignment marks may be formed of the same metal layer as the metal layer forming thin film transistor.

First claim

What is claimed is:

1. A display device comprising:
a flexible substrate;
pixels disposed on a first surface of the flexible substrate; and
alignment marks disposed along one side of the flexible substrate and being distinguishable from each other, wherein
a distance between any two neighboring alignment marks is constant.

2. The display device according to claim 1 , wherein the alignment marks are arranged in a same layer.

3. The display device according to claim 2 , wherein each of the pixels includes a thin film transistor, and
the alignment marks are formed from a same metal layer forming the thin film transistor.

4. The display device according to claim 1 , wherein each of the alignment marks is constituted by an opening part provided in an organic insulating film on the first surface.

5. The display device according to claim 1 , wherein each of the alignment marks is constituted by a concave part provided on an end surface of the flexible substrate.

6. The display device according to claim 1 , wherein each of the alignment marks has a different shape.

7. The display device according to claim 1 , wherein each of the alignment marks has an indicator, and each indicator is different.

8. The display device according to claim 7 , wherein indicators are numerals, letters, symbols, or combinations thereof.

9. The display device according to claim 7 , wherein the indicators are arranged on the first surface;
other indicators corresponding to the alignment marks are arranged on a second surface opposite to the first surface of the flexible substrate, and
the indicators on the first surface and the other indicators on the second surface are distinguishable from each other.

10. A display device comprising:
a flexible substrate;
pixels disposed on a first surface of the flexible substrate;
first alignment marks arranged along one side of the flexible substrate;
a resin film connected on the first surface, and
second alignment marks arranged along one side of the resin film, wherein
the first alignment marks and the second alignment marks are arranged on a same straight line and are distinguishable from each other.

11. The display device according to claim 10 , wherein each of the second alignment marks has a different shape.

12. The display device according to claim 10 , wherein each of the second alignment marks has an indicator, and each indicator is different.

13. The display device according to claim 12 , wherein indicators are numerals, letters, symbols, or combinations thereof.

14. The display device according to claim 10 , wherein each of the second alignment marks is constituted by a concave part provided on an end surface of the flexible substrate.

15. A display device comprising:
a flexible substrate;
pixels disposed on a first surface of the flexible substrate;
a first alignment mark arranged along one side of the flexible substrate;
a spacer disposed adjacent to a second surface of the flexible substrate opposite to the first surface; and
second alignment marks disposed along one side of the spacer and being distinguishable from each other, wherein
the flexible substrate has a curved part such that a part of the second surface faces another part of the second surface via the spacer,
the first alignment mark is disposed in a region opposite to a region in which the pixels are disposed with respect to the curved part,
one of the second alignment marks faces the first alignment mark in a planar view, and
each of the second alignment marks has a different shape.

16. The display device according to claim 15 , wherein each of the second alignment marks has an indicator, and each indicator is different.

17. The display device according to claim 16 , wherein indicators are numerals, letters, symbols, or combinations thereof.

Assignees

• Japan Display Inc

Inventors

• Aoki Hayata
• Kato Kengo
• Hanari Jun
• Yamada Yasuyuki

Classifications

• H10K59/1213

  the pixel elements being TFTs · CPC title

• H10K59/12 Primary

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• B32B3/02

  characterised by features of form at particular places, e.g. in edge regions {(non-uniform thickness B32B3/263)} · CPC title

• G09F9/00

  Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements (in which the variable information is permanently attached to a movable support G09F11/00; abacus G06C1/00; slide-rules G06G1/00) · CPC title