# US 12,604,607 B2 · Display device

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- Number: US 12,604,607 B2
- Document ID: US12604607B2
- Status: Granted
- Kind: B2
- Application number: 17/961,548
- Filed: 2022-10-06
- Published: 2023-04-20
- Granted: 2026-04-14
- Earliest claimed: 2021-10-19
- Assignees: LG Display Co., Ltd.
- Applicants: LG Display Co., Ltd.
- Inventors: Hoiyong Kwon; Jihun Song
- Web page: https://patentgrep.com/patent/US12604607B2

## CPC

- H10K 50/844: Encapsulations
- H10K 77/10: Substrates, e.g. flexible substrates
- H10K 59/122: Pixel-defining structures or layers, e.g. banks
- H10K 59/131: Interconnections, e.g. wiring lines or terminals
- H10K 59/8722: {Peripheral sealing arrangements, e.g. adhesives, sealants}
- H10K 71/00: Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10W 72/073: {of die-attach connectors}
- H10W 72/30: Die-attach connectors
- H10K 59/1201: {Manufacture or treatment}
- H10K 71/80: using temporary substrates
- H10K 2102/101: {comprising transparent conductive oxides [TCO]}
- H10K 2102/311: {Flexible OLED}
- H10K 2102/351: {Thickness}
- H10W 72/07302: {using an auxiliary member}
- H10W 72/07307: {the auxiliary member being a temporary substrate, e.g. a removable substrate}
- H10W 72/342: {relative to the surface, e.g. recessed, protruding}
- H10W 72/387: {Flow barriers}
- H10W 72/90: Bond pads, in general
- H10W 72/9415: {relative to the surface, e.g. recessed, protruding}
- H10W 90/734: {between a chip and a stacked insulating package substrate, interposer or RDL}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10

## Abstract

In order to achieve the above-described objects, according to an aspect of the present disclosure, a display device includes a substrate which includes an active area and a non-active area extending from the active area and including a pad area and is formed of any one of a transparent conducting oxide and an oxide semiconductor; a plurality of inorganic insulating layers disposed on the substrate; a dam member having one end disposed on the pad area and the other end disposed at the outside of the substrate; and a plurality of flexible films which is disposed to cover the dam member and has one end disposed in the pad area. Accordingly, the dam member which covers the pad area is formed to minimize the crack of the plurality of inorganic insulating layers at the edge of the substrate.

## Claims

### Claim 1

A display device, comprising:
a substrate which includes an active area and a non-active area extending from the active area and including a pad area, the substrate formed of either a transparent conducting oxide or an oxide semiconductor;
a plurality of inorganic insulating layers disposed on the substrate;
a dam member having a first end disposed on the pad area and a second end disposed beyond an end of the substrate; and
a plurality of flexible films covering the dam member a first end of the flexible films disposed in the pad area,
wherein a part of a lower surface of the dam member is in contact with the plurality of inorganic insulating layers, and a remaining part of the lower surface of the dam member is exposed from the plurality of inorganic insulating layers and the substrate.

### Claim 2 (depends on 1)

The display device according to claim 1, further comprising:
a plurality of pads disposed between the dam member and the active area in the pad area; and
a plurality of conductive adhesive members disposed between the plurality of pads and the plurality of flexible films,
wherein first edges of the plurality of conductive adhesive members are disposed on the dam member beyond the end of the substrate.

### Claim 3 (depends on 2)

The display device according to claim 2, further comprising:
a seal member which covers the pad area on the plurality of flexible films,
wherein the plurality of conductive adhesive members and the seal member are partially disposed beyond the end of the substrate to cover the dam member.

### Claim 4 (depends on 3)

The display device according to claim 3, wherein an edge of the seal member disposed on the dam member is disposed to be closer to inside of the substrate than the first edges of the plurality of conductive adhesive members.

### Claim 5 (depends on 2)

The display device according to claim 2, wherein the dam member includes:
a first dam having a first end disposed on the pad area; and
a second dam which has a first end disposed on the pad area and is disposed on the first dam, and
wherein the first dam is formed of a different material from the second dam.

### Claim 6 (depends on 5)

The display device according to claim 5, wherein the plurality of conductive adhesive members cover the first ends of the first dam and the second dam.

### Claim 7 (depends on 5)

The display device according to claim 5, further comprising:
a plurality of tapes which are disposed between the second dam and each of the plurality of flexible films.

### Claim 8 (depends on 1)

The display device according to claim 1, wherein a lower surface of the dam member is disposed to be higher than an upper surface of the substrate.

### Claim 9 (depends on 1)

The display device according to claim 1, further comprising:
a light emitting diode which is disposed on the plurality of inorganic insulating layers in the active area and includes an anode, a light emitting layer, and a cathode; and
a bank disposed between the anode and the light emitting layer, in the active area,
wherein at least a part of the dam member is formed of the same material as the bank.

### Claim 10

A display device, comprising:
a substrate which includes a plurality of first areas in which a plurality of pads are disposed and a plurality of second areas between the plurality of first areas, the substrate formed of either a transparent conducting oxide or an oxide semiconductor;
a plurality of inorganic insulating layers disposed between the substrate and the plurality of pads;
a dam member which covers a first edge of the substrate in the plurality of first areas and the plurality of second areas;
a plurality of flexible films which is disposed on the dam member and is electrically connected to the plurality of pads; and
a plurality of conductive adhesive members which are disposed between the plurality of pads and the plurality of flexible films,
wherein a part of the dam member is disposed on the substrate and a remaining part of the dam member is disposed beyond a first end of the substrate,
wherein a part of a lower surface of the dam member is in contact with the plurality of inorganic insulating layers, and a remaining part of the lower surface of the dam member is exposed from the plurality of inorganic insulating layers and the substrate.

### Claim 11 (depends on 10)

The display device according to claim 10, further comprising:
a seal member on the plurality of flexible films in the plurality of first areas and the plurality of second areas,
wherein the seal member covers the plurality of inorganic insulating layers in the plurality of second areas.

### Claim 12 (depends on 11)

The display device according to claim 11, wherein first edges of the plurality of conductive adhesive members are disposed beyond a first edge of the seal member away from the first end of the substrate.

### Claim 13 (depends on 10)

The display device according to claim 10, further comprising:
a bank disposed on the substrate; and
a planarization layer disposed between the bank and the plurality of inorganic insulating layers,
wherein a part of a lower surface of the dam member disposed beyond the first end of the substrate is disposed to be higher than the substrate.

### Claim 14 (depends on 13)

The display device according to claim 13, wherein the dam member is formed of the same material as the bank, and a thickness of a part of the dam member disposed beyond the first end of the substrate is greater than a thickness of the bank.

### Claim 15 (depends on 13)

The display device according to claim 13, wherein the dam member includes:
a first dam which is formed of the same material as the bank; and
a second dam which is disposed on the first dam and is formed of a different material from the first dam.

### Claim 16 (depends on 15)

The display device according to claim 15, wherein a thickness of a part of the first dam beyond the first end of the substrate is equal to a thickness of the bank.

### Claim 17 (depends on 15)

The display device according to claim 15, further comprising:
a plurality of tapes which are attached between the second dam and each of the plurality of flexible films.

### Claim 18

A display device, comprising:
a substrate formed of either a transparent conducting oxide or an oxide semiconductor, the substrate including an active area and a non-active area extending from the active area and including a pad area;
a plurality of inorganic insulating layers disposed on the substrate;
a plurality of flexible films disposed in the pad area;
a plurality of pads disposed in the pad area;
a plurality of conductive adhesive members disposed between the plurality of pads and the plurality of flexible films; and
a dam member including at least a first part and a second part, the first part disposed on and extending in a first direction away from at least one of the inorganic insulating layers in the pad area, and the second part extending away from the first part and the pads in a second direction intersecting the first direction,
wherein a part of a lower surface of the dam member is in contact with the plurality of inorganic insulating layers, and a remaining part of the lower surface of the dam member is exposed from the plurality of inorganic insulating layers and the substrate.

### Claim 19 (depends on 18)

The display device according to claim 18, wherein the conductive adhesive members are disposed on the dam member.

### Claim 20 (depends on 18)

The display device according to claim 18, wherein the dam member includes:
a first dam; and
a second dam disposed on the first dam,
wherein the first dam is formed of a different material from the second dam.

### Claim 21 (depends on 18)

The display device according to claim 18, further comprising:
a tape disposed between the dam member and a corresponding one of the plurality of flexible films.

### Claim 22 (depends on 18)

The display device according to claim 18, wherein a lower surface of the second part of the dam member is disposed to be higher than an upper surface of the substrate.

### Claim 23 (depends on 18)

The display device according to claim 18, further comprising:
a seal member which covers the pad area on the plurality of flexible films, the seal member extending in the second direction less than the second part of the dam member.