# US 2019/0357366 A1 · Display apparatus and method of manufacturing the same

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- Number: US 2019/0357366 A1
- Document ID: US20190357366A1
- Status: Published application
- Kind: A1
- Application number: 16/395,050
- Filed: 2019-04-25
- Published: 2019-11-21
- Earliest claimed: 2018-05-18
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Sung Chul CHOI; Han Sun RYOU; Mansik MYEONG; Dongwoo SEO
- Web page: https://patentgrep.com/patent/US20190357366A1

## CPC

- B32B 3/30: characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)}
- B32B 3/263: {characterised by a layer having non-uniform thickness}
- B32B 5/18: characterised by features of a layer {of} foamed material
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 15/046: {of foam}
- B32B 15/18: comprising iron or steel {(B32B15/011, B32B15/012 and B32B15/013 take precedence)}
- B32B 27/065: {of foam}
- B32B 27/281: {comprising polyimides}
- B32B 27/302: {comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers}
- B32B 27/306: {comprising vinyl acetate or vinyl alcohol (co)polymers}
- B32B 27/308: {comprising acrylic (co)polymers}
- B32B 27/36: comprising polyesters
- B32B 27/365: {comprising polycarbonates}
- G06F 1/1601: {Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays (constructional details related to flat displays integrated in a portable computer, e.g. laptop, handheld computer G06F1/1637; constructional details related to television receivers H04N5/64)}
- G06F 1/1641: {the display being formed by a plurality of foldable display components (G06F1/1647 takes precedence)}
- G06F 1/1643: {the display being associated to a digitizer, e.g. laptops that can be used as penpads (details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615)}
- 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}
- H04M 1/0268: {including a flexible display panel}
- B32B 2250/03: 3 layers
- B32B 2250/40: Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
- B32B 2266/0214: Materials belonging to B32B27/00
- B32B 2266/0242: Acrylic resin
- B32B 2266/0257: Polyamide
- B32B 2266/0278: Polyurethane
- B32B 2307/748: Releasability
- B32B 2457/20: Displays, e.g. liquid crystal displays, plasma displays
- B32B 2457/206: Organic displays, e.g. OLED
- G06F 2200/1612: Flat panel monitor
- H04B 1/3827: Portable transceivers
- H10K 59/87: {Passivation; Containers; Encapsulations}
- H10K 59/873: {Encapsulations}
- 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
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08)
- H04B: TRANSMISSION
- 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 apparatus includes: a flexible display panel including a first display area, a second display area which is spaced apart from the first display area, and a folding area between the first display area and the second display area; a first supporting part under the flexible display panel corresponding to the first display area; a second supporting part under the flexible display panel corresponding to the second display area; and a first adhesive layer between the flexible display panel and the first and second supporting parts in the first display area, the second display area, and the folding area, and attached to the first and second supporting parts.

## Claims

### Claim 1

A display apparatus, comprising:
a flexible display panel comprising a first display area, a second display area spaced apart from the first display area, and a folding area between the first display area and the second display area;
a first supporting part under the flexible display panel corresponding to the first display area;
a second supporting part under the flexible display panel corresponding to the second display area; and
a first adhesive layer between the flexible display panel and the first and second supporting parts in the first display area, the second display area, and the folding area, and attached to the first and second supporting parts.

### Claim 2 (depends on 1)

The display apparatus of claim 1, wherein the first adhesive layer comprises one adhesive sheet corresponding to the first display area, the folding area, and the second display area of the flexible display panel.

### Claim 3 (depends on 2)

The display apparatus of claim 2, wherein an upper surface of the first supporting part comprises a first non-attachment area which is not bonded to the first adhesive layer, and
an upper surface of the second supporting part comprises a second non-attachment area which is not bonded to the first adhesive layer,

### Claim 4 (depends on 3)

The display apparatus of claim 3, wherein the first and second non-attachment areas are formed by surface treatment on the upper surfaces of the first and second support portions.

### Claim 5 (depends on 4)

The display apparatus of claim 4, wherein the surface treatment comprises olefin treatment, silicon treatment, long chain alkyl treatment, or fluorine treatment.

### Claim 6 (depends on 3)

The display apparatus of claim 3, wherein a recess is formed at the first supporting part in the first non-attachment area, and a first non-attachment part is received in the recess,
a recess is formed at the second supporting part in the second non-attachment area, and a second non-attachment part is received in the recess,
the upper surface of the first supporting part and an upper surface of the first non-attachment part are on a same plane, and
the upper surface of the second supporting part and an upper surface of the second non-attachment part are on a same plane.

### Claim 7 (depends on 2)

The display apparatus of claim 2, wherein a portion of the first adhesive layer corresponding to the folding area of the flexible display panel has a lower adhesive force than a portion of the first adhesive layer corresponding to the first or second display areas.

### Claim 8 (depends on 7)

The display apparatus of claim 7, wherein the first adhesive layer comprises a pressure sensitive adhesive sheet comprising a UV-reactive agent.

### Claim 9 (depends on 1)

The display apparatus of claim 1, wherein an image is displayed in both the first display area, the second display area, and the folded area, and the folding area is foldable.

### Claim 10 (depends on 9)

The display apparatus of claim 9, wherein the first adhesive layer corresponding to the folded area is spaced apart from the first and second supporting parts when the flexible display panel is folded.

### Claim 11 (depends on 1)

The display apparatus of claim 1, further comprising a non-attachment supporting part arranged corresponding to the folding area, and
wherein the first supporting part and the second supporting part are arranged corresponding to the first display area and the second display area, respectively,
the non-attachment supporting part contacts the first adhesive layer when the flexible display panel is unfolded, and
the non-attachment supporting part is spaced apart from the first adhesive layer when the flexible display panel is folded.

### Claim 12 (depends on 1)

The display apparatus of claim 1, further comprising:
a cushion layer between the first adhesive layer and the flexible display panel; and
a second adhesive layer between the cushion layer and the flexible display panel.

### Claim 13 (depends on 1)

The display apparatus of claim 1, wherein the first adhesive layer comprises an adhesive having an elongation percentage of 100% to 1,000%.

### Claim 14

A display apparatus, comprising:
a flexible display panel which is foldable;
a first supporting part attached to the flexible display panel;
a second supporting part which is attached to the flexible display panel and is movable relative to the first supporting part as the flexible display panel is folded; and
a first adhesive layer between the flexible display panel and the first and second supporting parts.

### Claim 15 (depends on 14)

The display apparatus of claim 14, wherein the first and second supporting parts make contact with the first adhesive layer when the flexible display panel is unfolded, and
a portion of the first supporting part and a portion of the second supporting part are spaced apart from the first adhesive layer when the flexible display panel is folded.

### Claim 16 (depends on 15)

The display apparatus of claim 15, wherein an upper surface of the first supporting part comprises a first non-attachment area which is not bonded to the first adhesive layer, and
an upper surface of the second supporting part comprises a second non-attachment area which is not bonded to the first adhesive layer,

### Claim 17 (depends on 16)

The display apparatus of claim 16, wherein a portion of the first adhesive layer corresponding to the portions of the first and second supporting parts spaced apart from the first adhesive layer has a lower adhesive force than other portions of the first adhesive layer.

### Claim 18

A method of manufacturing a display apparatus, the method comprising:
providing first and second supporting parts;
providing a flexible display panel comprising a first display area, a second display area which is spaced apart from the first display area, and a folding area between the first display area and the second display area, wherein a first adhesive layer is attached thereon; and
attaching the first adhesive layer to upper surfaces of the first and second supporting parts, and
wherein the first adhesive layer is arranged corresponding to the first display area, the second display area, and the folding area.

### Claim 19 (depends on 18)

The method of claim 18, further comprising:
performing a surface treatment to portions of the upper surfaces of the first and second supporting parts, and
wherein the surface treatment comprises olefin treatment, silicon treatment, long chain alkyl treatment, or fluorine treatment.

### Claim 20 (depends on 18)

The method of claim 18, wherein the first adhesive layer comprises a UV-reactive agent, and
the method further comprises irradiating UV light to a portion of the first adhesive layer.