# US 11,029,451 B2 · Cover window and display device having the same

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- Number: US 11,029,451 B2
- Document ID: US11029451B2
- Status: Granted
- Kind: B2
- Application number: 16/738,994
- Filed: 2020-01-09
- Published: 2020-05-14
- Granted: 2021-06-08
- Earliest claimed: 2014-02-26
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Soo-Won Kim
- Web page: https://patentgrep.com/patent/US11029451B2

## CPC

- G02B 1/18: Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films (G02B1/16 takes precedence)
- G02B 5/18: Diffraction gratings {(holographic optical elements G02B5/32, G03H; integrally combined with optical fibres G02B6/02057; for coupling light guides G02B6/34; integrally combined with optical integrated light guides G02B6/12; grating systems G02B27/44)}
- G02F 1/133308: {Support structures for LCD panels, e.g. frames or bezels}
- G02F 1/133502: {Antiglare, refractive index matching layers}
- G06F 1/1656: {Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories (mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203)}
- G02F 1/133388: {with constructional differences between the display region and the peripheral region}
- H04N 5/64: Constructional details of receivers, e.g. cabinets or dust covers (furniture aspects {of television cabinets} A47B81/06)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- 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)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

A cover window covering a display panel of a display device comprises a base member covering a display area and a non-display area of the display panel, and an inorganic layer disposed on the base member. The inorganic layer has substantially uniform thickness on the display area, and has a diffraction grating structure on the non-display area.

## Claims

### Claim 1

A cover of a display device, the cover comprising:
a base member including a first area and a second area; and
an inorganic layer located on the base member, the inorganic layer having a substantially uniform thickness on the first area and having a diffraction grating structure on the second area,
wherein the diffraction grating structure comprises a plurality of grooves arranged in parallel in a first direction.

### Claim 2 (depends on 1)

The cover of claim 1, further comprising:
a coating layer located on the inorganic layer,
wherein the coating layer has a substantially uniform thickness such that the coating layer has a substantially flat shape on the first area and has a diffraction grating structure corresponding to the diffraction grating structure of the inorganic layer in the second area.

### Claim 3 (depends on 2)

The cover of claim 2, wherein the coating layer comprises an anti-fingerprint coating layer.

### Claim 4 (depends on 3)

The cover of claim 3, wherein the anti-fingerprint layer comprises a fluorine-containing coating material.

### Claim 5 (depends on 1)

The cover of claim 1, wherein the inorganic layer comprises a silicon oxide.

### Claim 6 (depends on 1)

The cover of claim 1, further comprising:
an anti-reflection layer located between the inorganic layer and the base member.

### Claim 7 (depends on 6)

The cover of claim 6, wherein the anti-reflection layer comprises a plurality of layers having different refractive indexes.

### Claim 8 (depends on 7)

The cover of claim 7, wherein the anti-reflection layer comprises a titanium oxide layer and a silicon oxide layer.

### Claim 9

A cover of a display device, the cover comprising:
a base member on a display area and a non-display area of the display device; and
an inorganic layer located on the base member, the inorganic layer extending continuously on the display area and having a diffraction grating structure on the non-display area,
wherein the diffraction grating structure comprises a plurality of grooves arranged in parallel in a first direction.

### Claim 10 (depends on 9)

The cover of claim 9, further comprising:
a coating layer located on the inorganic layer,
wherein the coating layer has a diffraction grating structure corresponding to the diffraction grating structure of the inorganic layer.

### Claim 11 (depends on 10)

The cover of claim 10, wherein the coating layer comprises an anti-fingerprint coating layer.

### Claim 12 (depends on 11)

The cover of claim 11, wherein the anti-fingerprint layer comprises a fluorine-containing coating material.

### Claim 13 (depends on 9)

The cover of claim 9, wherein the inorganic layer comprises a silicon oxide.

### Claim 14 (depends on 9)

The cover of claim 9, further comprising:
an anti-reflection layer located between the inorganic layer and the base member.

### Claim 15 (depends on 14)

The cover of claim 14, wherein the anti-reflection layer comprises a plurality of layers having different refractive indexes.

### Claim 16 (depends on 15)

The cover of claim 15, wherein the anti-reflection layer comprises a titanium oxide layer and a silicon oxide layer.