# US 2019/0172855 A1 · Display apparatus

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- Number: US 2019/0172855 A1
- Document ID: US20190172855A1
- Status: Published application
- Kind: A1
- Application number: 16/204,794
- Filed: 2018-11-29
- Published: 2019-06-06
- Earliest claimed: 2016-06-02
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Sangwol Lee; Sungku Kang; Jinkyu Kim
- Web page: https://patentgrep.com/patent/US20190172855A1

## CPC

- H10K 77/111: {Flexible substrates}
- H10D 86/0212: {comprising manufacture, treatment or coating of substrates}
- H10D 86/411: {characterised by materials, geometry or structure of the substrates}
- H10D 86/441: {Interconnections, e.g. scanning lines}
- H10D 86/60: wherein the TFTs are in active matrices
- H10K 59/871: {Self-supporting sealing arrangements}
- H10K 59/131: Interconnections, e.g. wiring lines or terminals
- H10K 59/8722: {Peripheral sealing arrangements, e.g. adhesives, sealants}
- H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers}
- H10K 59/8791: {Arrangements for improving contrast, e.g. preventing reflection of ambient light}
- H10W 72/325: {Die-attach connectors having a filler embedded in a matrix}
- H10W 72/352: {comprising metals or metalloids, e.g. solders}
- H10W 72/856: {Bump connectors and die-attach connectors (bumps embedded in underfills H10W74/15)}
- H10W 90/732: {between stacked chips}
- H10W 90/734: {between a chip and a stacked insulating package substrate, interposer or RDL}
- Y02E 10/549: Organic PV cells
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- 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 capable of reducing a defect rate during manufacturing and utilizing thereof, the display apparatus includes a substrate comprising a display area and a peripheral area outside the display area; a display unit over an upper surface of the substrate to correspond to the display area; and a protective film including a protective film base and an adhesive layer, the protective film being attached to the lower surface of the substrate by the adhesive layer, wherein the protective film base includes a first protective film base corresponding at least to the display area, and a second protective film base having physical properties that are different from physical properties of the first protective film base and corresponding to at least a part of the peripheral area.

## Claims

### Claim 1

A display apparatus comprising:
a substrate comprising a display area and a peripheral area outside the display area;
a display unit over an upper surface of the substrate to correspond to the display area; and
a protective film comprising a protective film base and an adhesive layer, the protective film being attached to the lower surface of the substrate by the adhesive layer,
wherein the protective film base comprises a first protective film base corresponding at least to the display area, and a second protective film base having physical properties that are different from physical properties of the first protective film base and corresponding to at least a part of the peripheral area.

### Claim 2 (depends on 1)

The display apparatus of claim 1, wherein the second protective film base has a light transmittance that is greater than a light transmittance of the first protective film base.

### Claim 3 (depends on 1)

The display apparatus of claim 1, wherein the first protective film base has a thermal resistance that is greater than a thermal resistance of the second protective film base.

### Claim 4 (depends on 3)

The display apparatus of claim 3, wherein the first protective film base has a heat deformation temperature that is higher than a heat deformation temperature of the second protective film base.

### Claim 5 (depends on 1)

The display apparatus of claim 1, further comprising an electronic device or a printed circuit board over the upper surface of the substrate so as to correspond to an electronic device area included in the peripheral area,
wherein the second protective film base corresponds at least to the electronic device area.

### Claim 6 (depends on 5)

The display apparatus of claim 5, wherein the second protective film base extends to an edge of the substrate facing away from the display area.

### Claim 7 (depends on 5)

The display apparatus of claim 5, wherein a first end portion of the first protective film base in a direction to the electronic device area is in surface-contact with a second end portion of the second protective film base in a direction to the display area.

### Claim 8 (depends on 7)

The display apparatus of claim 7, wherein the first end portion and the second end portion correspond to an edge of the display area in the direction to the electronic device area.

### Claim 9 (depends on 7)

The display apparatus of claim 7, wherein the first end portion and the second end portion correspond to an edge of the electronic device area in the direction to the display area.

### Claim 10 (depends on 5)

The display apparatus of claim 5, wherein a first end portion of the first protective film base in a direction to the electronic device area corresponds to an edge of the display area in a direction to the electronic device area.

### Claim 11 (depends on 5)

The display apparatus of claim 5, wherein a second end portion of the second protective film base in a direction to the display area corresponds to an edge of the electronic device area in a direction to the display area.

### Claim 12 (depends on 5)

The display apparatus of claim 5, wherein a first end portion of the first protective film base in a direction to the electronic device area is spaced apart from a second end portion of the second protective film base in a direction to the display area.

### Claim 13 (depends on 12)

The display apparatus of claim 12, wherein the adhesive layer comprises a first adhesive layer corresponding to the first protective film base and a second adhesive layer corresponding to the second protective film base, and an end portion of the first adhesive layer in the direction to the electronic device area is spaced apart from an end portion of the second adhesive layer in the direction to the display area.

### Claim 14 (depends on 1)

The display apparatus of claim 1, wherein the adhesive layer comprises a first adhesive layer corresponding to the first protective film base and a second adhesive layer having a physical property different from a physical property of the first adhesive layer and corresponding to the second protective film base.

### Claim 15 (depends on 1)

The display apparatus of claim 1, wherein the peripheral area comprises a bending area and the substrate is bent at the bending area.

### Claim 16 (depends on 15)

The display apparatus of claim 15, wherein the first protective film base corresponds to the bending area.

### Claim 17 (depends on 16)

The display apparatus of claim 16, wherein a part of the first protective film base corresponding to the bending area is at least partially removed.

### Claim 18 (depends on 16)

The display apparatus of claim 16, wherein a part of the first protective film base corresponding to the bending area comprises a plurality of openings or a plurality of grooves.

### Claim 19 (depends on 18)

The display apparatus of claim 18, wherein each of the plurality of openings or each of the plurality of grooves extends from the display area toward the peripheral area in a virtual curved surface that is in parallel with the upper surface of the substrate that is bent.

### Claim 20 (depends on 18)

The display apparatus of claim 18, wherein, from among the plurality of openings or the plurality of grooves, openings or grooves locating at a center portion of the bending area have areas that are greater than areas of openings or grooves locating near edges of the bending area.

### Claim 21 (depends on 18)

The display apparatus of claim 18, wherein inner side surfaces of the plurality of openings or the plurality of grooves are non-perpendicular to the upper surface of the substrate.

### Claim 22 (depends on 18)

The display apparatus of claim 18, wherein a portion of the first protective film base, wherein the portion includes the plurality of openings or the plurality of grooves, has an area that is less than an area of the bending area.

### Claim 23 (depends on 18)

The display apparatus of claim 18, wherein a portion of the first protective film base, wherein the portion includes the plurality of openings or the plurality of grooves, has an area that is equal to an area of the bending area.

### Claim 24 (depends on 18)

The display apparatus of claim 18, wherein a portion of the first protective film base, wherein the portion includes the plurality of openings or the plurality of grooves, has an area that is greater than an area of the bending area.

### Claim 25 (depends on 15)

The display apparatus of claim 15, wherein the second protective film base corresponds to the bending area and an adjacent portion to the bending area.

### Claim 26 (depends on 25)

The display apparatus of claim 25, wherein a part of the second protective film base corresponding to the bending area is at least partially removed.

### Claim 27 (depends on 25)

The display apparatus of claim 25, wherein a part of the second protective film base corresponding to the bending area comprises a plurality of openings or a plurality of grooves.

### Claim 28 (depends on 27)

The display apparatus of claim 27, wherein each of the plurality of openings or each of the plurality of grooves extends from the display area toward the peripheral area in a virtual curved surface that is in parallel with the upper surface of the substrate that is bent.

### Claim 29 (depends on 27)

The display apparatus of claim 27, wherein, from among the plurality of openings or the plurality of grooves, openings or grooves locating at a center portion of the bending area have areas that are greater than areas of openings or grooves locating near edges of the bending area.

### Claim 30 (depends on 15)

The display apparatus of claim 15, wherein the adhesive layer comprises an opening corresponding to the bending area.

### Claim 31 (depends on 30)

The display apparatus of claim 30, wherein the opening is filled with air.

### Claim 32 (depends on 30)

The display apparatus of claim 30, wherein the protective film base comprises an opening corresponding to the opening of the adhesive layer.

### Claim 33 (depends on 15)

The display apparatus of claim 15, wherein the adhesive layer comprises a plurality of openings corresponding to the bending area.

### Claim 34 (depends on 33)

The display apparatus of claim 33, wherein the first protective film base corresponds to the bending area, and the first protective film base comprises a plurality of openings or a plurality of grooves corresponding to the plurality of openings of the adhesive layer.

### Claim 35 (depends on 33)

The display apparatus of claim 33, wherein the second protective film base corresponds to the bending area and an adjacent portion to the bending area, and the second protective film base comprises a plurality of openings or a plurality of grooves corresponding to the plurality of openings of the adhesive layer.