Display device

• US 10,672,685 B2
• Filed: 11/06/2017
• Issued: 06/02/2020
• Est. Priority Date: 06/30/2017
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: InnoLux Corporation
• Inventors: Yueh, Jui-Jen, Lee, Kuan-Feng, Wu, Yuan-Lin, Lius, Chandra
• Primary Examiner(s): Menz, Laura M
• Assistant Examiner(s): Chan, Candice
• Application Number:
  US15/804,259
• Publication Number:
  US 20190004359A1
• Time in Patent Office: 939 Days
• CPC Class Codes: G02F 1/13306 Circuit arrangements or driving methods for the control of single liquid crystal cells G02F1/132, G02F1/133382 take precedence
• CPC Class Codes: G02F 1/133345 Insulating layers G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: G02F 1/136227 Through-hole connection of the pixel electrode to the active element through an insulation layer
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence
• CPC Class Codes: G02F 2202/16 conductive
• CPC Class Codes: G02F 2202/28 Adhesive materials or arrangements
• CPC Class Codes: H01L 23/481 Internal lead connections, e.g. via connections, feedthrough structures
• CPC Class Codes: H01L 23/49827 Via connections through the substrates, e.g. pins going through the substrate, coaxial cables H01L23/49822, H01L23/49833, H01L23/4985, H01L23/49861 take precedence
• CPC Class Codes: H01L 27/156 two-dimensional arrays
• CPC Class Codes: H01L 33/483 Containers
• CPC Class Codes: H10K 50/8426 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 59/8722 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 77/10 Substrates, e.g. flexible substrates
• CPC Class Codes: Y02E 10/549 Organic PV cells

Abstract

A display device is disclosed, which includes: a substrate having a first surface and a second surface, wherein the first surface is opposite to the second surface; a first conductive element disposed on the first surface; a second conductive element disposed on the second surface; and a connecting element disposed in a through via of the substrate, wherein the connecting element electrically connects the first conductive element and the second conductive element; wherein the second conductive element has a first oxygen atomic concentration, the connecting element has a second oxygen atomic concentration, and the first oxygen atomic concentration is greater than the second oxygen atomic concentration.

Claims

1. A display device, comprising:

a substrate having a first surface and a second surface, wherein the first surface is opposite to the second surface;

a transistor array disposed on the first surface;

a first conductive element disposed on the first surface and comprising a first metal;

a second conductive element disposed on the second surface; and

a connecting element disposed in a through via of the substrate and comprising a second metal, wherein the connecting element electrically connects the first conductive element and the second conductive element;

a sealing layer disposed on the a border region of the substrate;

wherein the sealing layer is disposed on only a part of the first conductive element, and the other part of the first conductive element does not overlap the sealing layer;

wherein the through via is disposed on the border region of the substrate;

wherein the second conductive element has a first oxygen atomic concentration, the connecting element has a second oxygen atomic concentration, and the first oxygen atomic concentration is greater than the second oxygen atomic concentration;

wherein an oxidation potential of the first metal is greater than an oxidation potential of the second metal;

wherein, in a cross sectional view, the connecting element has at least two different widths.

2. The display device of claim 1, wherein a ratio of the second oxygen atomic concentration to the first oxygen atomic concentration is between 0.00001 and 0.5.

3. The display device of claim 1, wherein the connecting element comprises a metal or an alloy.

4. The display device of claim 1, wherein the second conductive element comprises a metal oxide layer.

5. The display device of claim 1, wherein the second conductive element comprises a metal layer and a metal oxide layer, and the metal layer is disposed between the metal oxide layer and the connecting element.

6. The display device of claim 5, wherein a thickness of the metal oxide layer is greater than or equal to 10 nm and less than 1000 nm.

7. The display device of claim 1, wherein the second conductive element comprises a third metal, and an oxidation potential of the third metal is greater than the oxidation potential of the second metal.

8. The display device of claim 1, further comprising an insulating layer disposed on the first surface, wherein the insulating layer is disposed on at least a part of the first conductive element.

9. The display device of claim 8, wherein the insulating layer contacts the first conductive element.

10. The display device of claim 1, wherein the sealing layer contacts the first conductive element.

11. The display device of claim 1, wherein the sealing layer is disposed on at least a part of an insulating layer disposed on the first surface.

12. The display device of claim 11, wherein the sealing layer contacts the insulating layer.

13. The display device of claim 1, wherein the sealing layer is disposed on at least a part of the connecting element.

14. The display device of claim 1, wherein the sealing layer is further disposed on a display region of the substrate.

15. The display device of claim 1, further comprising a driving unit electrically connected to the second conductive element through a conductive adhesive.

16. The display device of claim 15, further comprising a printed circuit board, wherein the second conductive element electrically connects to the printed circuit board through the conductive adhesive, and the printed circuit board electrically connects to the driving unit.

17. The display device of claim 15, wherein the driving unit electrically connects to the transistor array through the connecting element.