# US 12,016,240 B2 · Display device and method of manufacturing the same

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- Number: US 12,016,240 B2
- Document ID: US12016240B2
- Status: Granted
- Kind: B2
- Application number: 15/726,194
- Filed: 2017-10-05
- Published: 2018-06-21
- Granted: 2024-06-18
- Earliest claimed: 2016-10-17
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Sunhee Lee; Pilsuk Lee; Juchan Park; Younggug Seol
- Web page: https://patentgrep.com/patent/US12016240B2

## CPC

- B32B 27/08: of synthetic resin
- B32B 3/08: characterised by added members at particular parts {(layer formed of separate pieces of material which are juxtaposed side-by-side B32B3/14, B32B3/18)}
- B32B 3/26: characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids {(foam layer B32B5/18; layer of synthetic resin characterised by fillers that create voids or cavities B32B27/205); characterised by an apertured layer}
- B32B 27/28: comprising synthetic resins not wholly covered by any one of the sub-groups {B32B27/30 - B32B27/42}
- B32B 27/281: {comprising polyimides}
- B32B 27/283: {comprising polysiloxanes}
- B32B 27/285: {comprising polyethers}
- B32B 27/286: {comprising polysulphones; polysulfides}
- B32B 27/308: {comprising acrylic (co)polymers}
- B32B 27/36: comprising polyesters
- B32B 27/365: {comprising polycarbonates}
- H10K 59/12: Active-matrix OLED [AMOLED] displays
- H10K 59/873: {Encapsulations}
- H10K 77/111: {Flexible substrates}
- B32B 3/10: characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B 2255/20: Inorganic coating
- B32B 2255/205: Metallic coating
- B32B 2255/24: Organic non-macromolecular coating
- B32B 2255/26: Polymeric coating
- B32B 2255/28: Multiple coating on one surface
- B32B 2307/212: Electromagnetic interference shielding
- B32B 2307/51: Elastic
- B32B 2307/54: Yield strength; Tensile strength
- B32B 2307/546: Flexural strength; Flexion stiffness
- B32B 2307/714: Inert, i.e. inert to chemical degradation, corrosion
- B32B 2307/7244: Oxygen barrier
- B32B 2307/7246: Water vapor barrier
- B32B 2457/20: Displays, e.g. liquid crystal displays, plasma displays
- B32B 2457/206: Organic displays, e.g. OLED
- H10K 85/20: Carbon compounds, e.g. carbon nanotubes or fullerenes
- H10K 85/221: {Carbon nanotubes}
- H10K 2102/311: {Flexible OLED}
- Y02E 10/549: Organic PV cells
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A display device includes a reinforced substrate; and a display layer disposed on the reinforced substrate and configured to display an image, wherein the reinforced substrate includes a first reinforced layer including a flexible region including a plurality of patterns spaced apart from one another; and a first substrate disposed on the first reinforced layer and has flexibility. A modulus of elasticity of the first reinforced layer is greater than a modulus of elasticity of the first substrate.

## Claims

### Claim 1

A display device comprising:
a reinforced substrate having a flexible region and a reinforced region adjacent to the flexible region;
a display layer disposed on the reinforced substrate and including a thin-film transistor, an organic light emitting display and a thin-film encapsulating layer, wherein the thin-film encapsulating layer is disposed on the organic light emitting display; and
a first barrier layer configured to block moisture or oxygen toward the display layer and disposed between the reinforced substrate and the display layer,
wherein the reinforced substrate comprises:
a first reinforced layer comprising a reinforced portion disposed in the reinforced region and a plurality of patterns disposed in the flexible region, each of the plurality of patterns being disconnected from one another by respective ones of a plurality of patterned spaces and disconnected from the reinforced portion; and
a first substrate that is disposed on the first reinforced layer and has flexibility,
wherein a modulus of elasticity of the first reinforced layer is greater than a modulus of elasticity of the first substrate,
wherein the first substrate surrounds at least three surfaces of the reinforced portion of the first reinforced layer,
wherein the organic light emitting display includes a pixel electrode including a reflective electrode, an intermediate layer disposed on the pixel electrode, and a counter electrode disposed on the intermediate layer,
wherein the organic light emitting display emits light in a direction opposite from the reinforced substrate, and
wherein the light emitted from the organic light emitting display is emitted to outside of the display device through the thin-film encapsulating layer.

### Claim 2 (depends on 1)

The display device of claim 1, wherein the first substrate surrounds at least three surfaces of the first reinforced layer including two side surfaces and an upper surface facing the first substrate.

### Claim 3 (depends on 1)

The display device of claim 1, wherein a bottom surface of the first reinforced layer is exposed without being surrounded by the first substrate.

### Claim 4 (depends on 1)

The display device of claim 1, wherein the first reinforced layer includes an inorganic material.

### Claim 5 (depends on 1)

The display device of claim 1, wherein the first reinforced layer comprises a conductive material.

### Claim 6 (depends on 5)

The display device of claim 5, wherein the conductive material comprises any one selected from a group including molybdenum (Mo), titanium (Ti), silver (Ag), carbon nanotubes (CNT), and graphene.

### Claim 7 (depends on 1)

The display device of claim 1, wherein the first pattern, the second pattern, and the third pattern have different widths.

### Claim 8 (depends on 1)

The display device of claim 1, wherein the plurality of patterns in the flexible region has different sizes and shapes.

### Claim 9 (depends on 1)

The display device of claim 1, wherein the first reinforced layer comprises a plurality of flexible regions.

### Claim 10 (depends on 1)

The display device of claim 1, wherein, in the flexible region, the first reinforced layer comprises a supporter and a convex portion protruding from the supporter.

### Claim 11 (depends on 1)

The display device of claim 1, wherein the first substrate fills the plurality of patterned spaces between adjacent patterns of the first reinforced layer in the flexible region.

### Claim 12 (depends on 1)

The display device of claim 1, further comprising:
a second substrate that is disposed on the first barrier layer and has flexibility; and
a second barrier layer disposed on the second substrate.

### Claim 13 (depends on 1)

The display device of claim 1, further comprising:
a second substrate that is disposed below the first substrate and has flexibility; and
a second barrier layer disposed on the second substrate.

### Claim 14 (depends on 1)

The display device of claim 1, further comprising a second substrate and a second reinforced layer comprising a second flexible region and surrounded by the second substrate on at least three surfaces,
wherein a modulus of elasticity of the second reinforced layer is greater than a modulus of elasticity of the second substrate.