Display panel and display device including the same

• US 10,470,306 B2
• Filed: 11/30/2017
• Issued: 11/05/2019
• Est. Priority Date: 03/17/2017
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Park, Hyunae, Kwak, Wonkyu, Kim, Dongsoo, Lee, Jieun, Lee, Soyoung, Hwang, Wonmi
• Primary Examiner(s): Chen, Xiaoliang
• Application Number:
  US15/827,212
• Publication Number:
  US 20180270950A1
• Time in Patent Office: 705 Days
• Field of Search: 174260, 349 43, 349 44, 349 66, 349141, 349149, 257 59, 257 99, 257734, 257737, 257778, 345174, 438 30, 438158, 438608
• CPC Class Codes: G02F 1/13458 Terminal pads
• CPC Class Codes: G02F 2201/122 having a particular pattern
• CPC Class Codes: G02F 2201/123 pixel
• CPC Class Codes: H05K 1/028 Bending or folding regions of flexible printed circuits H05K1/0283 takes precedence
• CPC Class Codes: H05K 1/113 Via provided in pad; Pad over filled via
• CPC Class Codes: H10K 2102/302 of OLED structures
• CPC Class Codes: H10K 50/8445 multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
• CPC Class Codes: H10K 59/123 Connection of the pixel electrodes to the thin film transistors [TFT]
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 59/8731 multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
• 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 display panel includes: a substrate including a display area and a peripheral area outside the display area; and a first conductive layer in the peripheral area, an entire upper surface of which is exposed to an outside of the display device. The first conductive layer includes a main part and a plurality of protrusions protruding from the main part in a direction parallel to an upper surface of the substrate.

Claims

1. A display device comprising:

a substrate comprising a display area and a peripheral area outside the display area;

a first conductive layer in the peripheral area, wherein the first conductive layer comprises a main part and a plurality of protrusions protruding from a side of the main part in a direction parallel to an upper surface of the substrate when viewed from a plan view in a thickness direction of the first conductive layer, wherein an edge of an upper surface of the first conductive layer is not covered by an insulating layer; and

a conductive material layer directly contacting the upper surface of the first conductive layer.

2. The display device of claim 1, wherein

at least a portion of the main part has a three-layered structure, and

at least a portion of a protrusion of the plurality of protrusions has a two-layered structure.

3. The display device of claim 2, wherein

the three-layered structure of the at least a portion of the main part is defined by a lower main layer, an intermediate main layer on the lower main layer, and an upper main layer on the intermediate main layer, and

the two layered-structure of the at least a portion of the protrusion is defined by a lower protrusion layer and an intermediate protrusion layer on the lower protrusion layer.

4. The display device of claim 3, wherein

the lower main layer and the lower protrusion layer are integrally formed as a single unitary body, and

the intermediate main layer and the intermediate protrusion layer are integrally formed as a single unitary body.

5. The display device of claim 3, wherein an outer side of the intermediate protrusion layer is closer to a center of the main part than an outer side of the lower protrusion layer is.

6. The display device of claim 1, wherein

at least a portion of the main part has a two-layered structure, and

at least a portion of a protrusion of the plurality of protrusions has a single-layered structure.

7. The display device of claim 6, wherein

the two-layered structure of the at least a portion of the main is defined by a lower main layer and an upper main layer on the lower main layer, and

the single-layered structure of the at least a portion of the protrusion is defined by a lower protrusion layer.

8. The display device of claim 7, wherein the lower main layer and the lower protrusion layer are integrally formed as a single unitary body.

9. The display device of claim 1, wherein a width of a distal portion of the plurality of protrusions in a direction away from the main part is greater than a width of a proximal portion of the plurality of protrusions in a direction toward the main part.

10. The display device of claim 1, wherein a width of a distal portion of the plurality of protrusions in a direction away from the main part is less than a width of a proximal portion of the plurality of protrusions in a direction toward the main part.

11. The display device of claim 1, wherein

at least a portion of the main part has a multi-layered structure, and

at least a portion of a protrusion of the plurality of protrusions has a multi-layered structure the same as the multi-layered structure of the at least a portion of the main part.

12. The display device of claim 1, further comprising:

a second conductive layer under the first conductive layer,

wherein the second conductive layer has a shape corresponding to a shape of the main part.

13. The display device of claim 12, wherein an orthogonal projection of an edge of the main part onto the substrate overlaps an orthogonal projection of an edge of the second conductive layer onto the substrate.

14. The display device of claim 12, further comprising:

an insulating layer between the first conductive layer and the second conductive layer,

wherein an opening is defined through the insulating layer, and

wherein a central portion of the second conductive layer directly contacts a central portion of the main part via the opening.

15. The display device of claim 12, wherein an orthogonal projection of the plurality of protrusions onto the substrate is located outside an orthogonal projection of an edge of the second conductive layer onto the substrate.

16. The display device of claim 1, wherein a width of at least one of the plurality of protrusions is less than a distance between the first conductive layer and a conductive layer adjacent to the first conductive layer.

17. The display device of claim 1, wherein the conductive material layer is a conductive adhesive layer.

18. The display device of claim 17, wherein the conductive adhesive layer covers an entire upper surface of at least one of the plurality of protrusions.

19. The display device of claim 1, wherein the conductive material layer is a bump of an electronic element or a pad of a printed circuit board.

20. The display device of claim 1, wherein the conductive material layer is a portion of an integrated circuit element.