# US 12,016,195 B2 · Display device including corner display having cutouts and dams

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- Number: US 12,016,195 B2
- Document ID: US12016195B2
- Status: Granted
- Kind: B2
- Application number: 17/483,629
- Filed: 2021-09-23
- Published: 2022-03-24
- Granted: 2024-06-18
- Earliest claimed: 2020-09-24
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Hye Min Lee; Hyoung Sub Lee; Jin Ho Hyun; Woo Yong Sung
- Web page: https://patentgrep.com/patent/US12016195B2

## CPC

- H10K 59/121: characterised by the geometry or disposition of pixel elements
- H10K 59/12: Active-matrix OLED [AMOLED] displays
- H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers}
- G02F 1/133331: {Cover glasses}
- G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable}
- G09F 9/301: {flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED}
- G09G 2380/02: Flexible displays
- H05K 2201/09909: Special local insulating pattern, e.g. as dam around component
- H10K 50/15: Hole transporting layers
- H10K 50/16: Electron transporting layers
- H10K 50/171: {Electron injection layers}
- H10K 59/122: Pixel-defining structures or layers, e.g. banks
- H10K 59/124: Insulating layers formed between TFT elements and OLED elements
- H10K 59/38: comprising colour filters or colour changing media [CCM]
- H10K 59/40: OLEDs integrated with touch screens
- H10K 77/111: {Flexible substrates}
- H10K 2102/311: {Flexible OLED}
- H10K 2102/351: {Thickness}
- Y02E 10/549: Organic PV cells
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A display device includes: a display panel having a front portion, a first bending portion, a second bending portion, and a corner portion, the display panel including a plurality of first pixels disposed in the front portion and a plurality of second pixels disposed in the corner portion. The display panel includes: a substrate; a first dam surrounding the plurality of first pixels; and a second dam surrounding the plurality of second pixels. The substrate includes a plurality of cutout patterns disposed in the corner portion, the plurality of second pixels and the second dam are disposed in each of the plurality of cutout patterns, and a height of an upper surface of the first dam is higher than a height of an upper surface of the second dam, based on one surface of the substrate.

## Claims

### Claim 1

A display device, comprising:
a display panel having a front portion, a first bending portion extending from a first side of the front portion, a second bending portion extending from a second side of the front portion, and a corner portion disposed between the first bending portion and the second bending portion, the display panel comprising a plurality of first pixels disposed in the front portion and a plurality of second pixels disposed in the corner portion,
wherein the display panel comprising:
a substrate;
a first dam disposed on the substrate and surrounding the plurality of first pixels; and
a second dam disposed on the substrate and surrounding the plurality of second pixels,
wherein the substrate comprises a plurality of cutout patterns disposed in the corner portion, at least some of the plurality of cutout patterns being separated from each other,
the plurality of second pixels and the second dam are disposed in each of the plurality of cutout patterns, and
a height of an upper surface of the first dam is higher than a height of an upper surface of the second dam, based on one surface of the substrate.

### Claim 2 (depends on 1)

The display device of claim 1, wherein the first dam comprises a plurality of first unit patterns and a plurality of second unit patterns, and wherein:
the plurality of first unit patterns are repeatedly arranged and spaced apart from each other, and
the plurality of second unit patterns are repeatedly arranged and spaced apart from each other.

### Claim 3 (depends on 2)

The display device of claim 2, wherein the plurality of first unit patterns and the plurality of second unit patterns are arranged in substantially parallel.

### Claim 4 (depends on 3)

The display device of claim 3, wherein each of the first unit patterns and the second unit patterns has a rectangular shape or a hexagonal shape.

### Claim 5 (depends on 2)

The display device of claim 2, further comprising a connection dam disposed on the substrate and connecting the second dam respectively disposed in the plurality of cutout patterns.

### Claim 6 (depends on 1)

The display device of claim 1, further comprising an organic encapsulation layer comprising:
a first organic layer disposed on the plurality of first pixels and covering the plurality of first pixels, and
a second organic layer disposed on the plurality of second pixels and covering the plurality of second pixels,
wherein the first organic layer overlaps the first dam and the second dam.

### Claim 7 (depends on 6)

The display device of claim 6, wherein the first organic layer covers an entire area of the first dam, and fills an area between the first dam and the second dam.

### Claim 8 (depends on 7)

The display device of claim 7, wherein a thickness of the first organic layer is greater than a thickness of the second organic layer.

### Claim 9 (depends on 8)

The display device of claim 8, wherein the thickness of the first organic layer is in a range of about 7 μm to about 9 μm, and the thickness of the second organic layer is in a range of about 3 μm to about 5 μm.

### Claim 10 (depends on 1)

The display device of claim 1, wherein each of the first dam and the second dam has an under-cut shape.

### Claim 11 (depends on 1)

The display device of claim 1, wherein:
the first bending portion has a first curvature,
the second bending portion has a second curvature, and
the corner portion has a double curvature bent by the first curvature and the second curvature.

### Claim 12 (depends on 11)

The display device of claim 11, wherein the first curvature is different from the second curvature.

### Claim 13

A display device, comprising:
a display panel having a front portion, a first bending portion extending from a first side of the front portion, a second bending portion extending from a second side of the front portion, and a corner portion disposed between the first bending portion and the second bending portion, the display panel comprising a plurality of first pixels disposed in the front portion and a plurality of second pixels disposed in the corner portion,
wherein the display panel comprises:
a substrate;
a first dam disposed on the substrate and surrounding the plurality of first pixels;
a second dam disposed on the substrate and surrounding the plurality of second pixels; and
an organic encapsulation layer comprising a first organic layer disposed on the plurality of first pixels and covering the plurality of first pixels, and a second organic layer disposed on the plurality of second pixels and covering the plurality of second pixels,
wherein the substrate comprises a plurality of cutout patterns disposed in the corner portion and at least some thereof being separated from each other,
the plurality of second pixels and the second dam are disposed in each of the cutout patterns, and
the first organic layer overlaps the first dam and the second dam.

### Claim 14 (depends on 13)

The display device of claim 13, wherein the first organic layer covers an entire area of the first dam, and fills an area between the first dam and the second dam.

### Claim 15 (depends on 14)

The display device of claim 14, wherein a thickness of the first organic layer is in a range of about 7 μm to about 9 μm, and a thickness of the second organic layer is in a range of about 3 μm to about 5 μm.

### Claim 16 (depends on 13)

The display device of claim 13, wherein a height of an upper surface of the first dam is higher than a height of an upper surface of the second dam, based on one surface of the substrate.

### Claim 17 (depends on 16)

The display device of claim 16, wherein the first dam comprises a plurality of first unit patterns and a plurality of second unit patterns, and wherein:
the plurality of first unit patterns are repeatedly arranged, and
the plurality of second unit patterns are repeatedly arranged.

### Claim 18 (depends on 17)

The display device of claim 17, further comprising a connection dam disposed on the substrate and connecting the second dam respectively disposed in the plurality of cutout patterns.

### Claim 19

A display device, comprising:
a substrate having a base portion and a plurality of cutout patterns protruding from the base portion;
a plurality of first pixels disposed on the base portion;
a plurality of second pixels disposed in each of the cutout patterns;
a first dam disposed on the base portion and surrounding the plurality of first pixels; and
a second dam disposed in each of the plurality of cutout patterns and surrounding the plurality of second pixels,
wherein a height of an upper surface of the first dam is higher than a height of an upper surface of the second dam, based on one surface of the substrate.

### Claim 20 (depends on 19)

The display device of claim 19, further comprising an organic encapsulation layer comprising:
a first organic layer disposed on the plurality of first pixels and covering the plurality of first pixels, and
a second organic layer disposed on the plurality of second pixels and covering the plurality of second pixels,
wherein the first organic layer overlaps the first dam and the second dam.