Current-driven display and method for producing the same

Patent metadata

Field	Value
Publication number	US-11114637-B2
Application number	US-201916588008-A
Country	US
Kind code	B2
Filing date	Sep 30, 2019
Priority date	Apr 25, 2019
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

The present disclosure provides a current-driven display, including a substrate and a first electrode layer stacked on the substrate in a stacking direction. The substrate includes a plurality of light-emitting units and a spacer separating each of the plurality of light-emitting units from one another. The first electrode layer includes a first region and a second region. The first region and the second region contact one of the plurality of light-emitting units, respectively, and are separated by the spacer. The current-driven display further includes a second electrode layer, which equipotentially connects the first region and the second region across the spacer. The present disclosure also provides a method for producing a current-driven display.

First claim

What is claimed is:

1. A current-driven display, comprising:
a substrate, comprising a plurality of light-emitting units and a spacer separating each of the plurality of light-emitting units from one another;
a first electrode layer, stacked on the substrate in a stacking direction, wherein the first electrode layer comprises a first region and a second region, wherein the first region and the second region contact one of the plurality of light-emitting units, respectively, and are separated by the spacer; and
a second electrode layer, equipotentially connecting the first region and the second region across the spacer,
wherein the first electrode layer comprises a first overlapping area and a first non-overlapping area, and the second electrode layer comprises a second overlapping area and a second non-overlapping area, the first overlapping area overlaps with the second overlapping area, the first non-overlapping area includes the first electrode layer and free from the second electrode layer, and the second non-overlapping area includes the second electrode layer and free from the first electrode layer.

2. The current-driven display of claim 1 , wherein in a horizontal direction perpendicular to the stacking direction, the first non-overlapping area and the second non-overlapping area are connected.

3. The current-driven display of claim 1 , wherein in a horizontal direction perpendicular to the stacking direction, the first overlapping area is at least adjacent to the first non-overlapping area or the second non-overlapping area.

4. The current-driven display of claim 1 , wherein in a horizontal direction perpendicular to the stacking direction, the first non-overlapping area is adjacent to the second non-overlapping area.

5. The current-driven display of claim 1 , wherein the substrate comprises a non-patterned area that is not covered by the plurality of light-emitting units, the spacer, the first electrode layer, and the second electrode layer.

6. The current-driven display of claim 5 , wherein in a horizontal direction perpendicular to the stacking direction, the non-patterned area is adjacent to at least one of the first overlapping area, the first non-overlapping area and the second non-overlapping area.

7. The current-driven display of claim 5 , further comprising a sensor, located in the non-patterned area.

8. The current-driven display of claim 1 , further comprising a third electrode layer, at least equipotentially connected with the first electrode layer or the second electrode layer, directly or indirectly.

9. The current-driven display of claim 8 , further comprising an insulating material, located between any two of the first electrode layer, the second electrode layer, and the third electrode layer.

10. The current-driven display of claim 8 , wherein the third electrode layer partially contacts the spacer.

11. The current-driven display of claim 1 , wherein the second electrode layer comprises a plurality of third regions; in a horizontal direction perpendicular to the stacking direction, the spacer is located between any two of the plurality of third regions.

12. The current-driven display of claim 11 , wherein the first region and the second region are in a strip shape extending in a first direction and discontinuous in a second direction; wherein the plurality of third regions are in a strip shape extending in the second direction and discontinuous in the first direction; and wherein the first direction and the second direction are perpendicular to the stacking direction.

13. The current-driven display of claim 1 , wherein at least one of the first electrode layer and the second electrode layer is a composite structure made of two or more materials.

14. The current-driven display of claim 1 , further comprising a lower electrode, located between the first electrode layer and the substrate or between the substrate and the second electrode layer.

15. The current-driven display of claim 14 , wherein the spacer covers a periphery of the lower electrode.

16. The current-driven display of claim 1 , wherein the first electrode layer partially contacts the spacer.

17. A method for producing a current-driven display, comprising:
providing a substrate, wherein the substrate comprises a plurality of light-emitting units and a spacer separating each of the plurality of light-emitting units from one another;
depositing a first electrode layer on the substrate in a stacking direction, wherein the first electrode layer comprises a first region and a second region, wherein the first region and the second region contact one of the plurality of light-emitting units, respectively, and are separated by the spacer;
depositing a second electrode layer on the substrate in the stacking direction, wherein the second electrode layer equipotentially connects the first region and the second region across the spacer; and
partially covering the first electrode layer with the second electrode layer to form an overlapping area;
wherein the first electrode layer covers the overlapping area and a first non-overlapping area, and the second electrode layer covers the overlapping area and a second non-overlapping area, the first non-overlapping area is free from the second electrode layer, and the second non-overlapping area is free from the first electrode layer.

18. The method for producing the current-driven display of claim 17 , further comprising:
disposing an insulating material between the first electrode layer and the second electrode layer.

19. The method for producing the current-driven display of claim 17 , further comprising:
forming a non-patterned area on the substrate, wherein the non-patterned area is not covered by the plurality of light-emitting units, the spacer, the first electrode layer, and the second electrode layer.

20. The method for producing the current-driven display of claim 19 , further comprising:
arranging a sensor on the non-patterned area.

Assignees

• Int Tech Co Ltd

Inventors

• Lee Shin-Shian

Classifications

• H10K71/00

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

• H10K59/179

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/8791

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title

• H10K59/80521

  characterised by their shape · CPC title