# US 11,994,763 B2 · Display panel and method of providing the same

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- Number: US 11,994,763 B2
- Document ID: US11994763B2
- Status: Granted
- Kind: B2
- Application number: 16/951,183
- Filed: 2020-11-18
- Published: 2021-08-12
- Granted: 2024-05-28
- Earliest claimed: 2020-02-06
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., LTD.
- Inventors: Young Gu Kim; Baekkyun Jeon; Jiyun Park; Jongho Son; Hyelim Jang; Kyungseon Tak
- Web page: https://patentgrep.com/patent/US11994763B2

## CPC

- G02F 1/133526: {Lenses, e.g. microlenses or Fresnel lenses}
- G02B 5/3058: {comprising electrically conductive elements, e.g. wire grids, conductive particles}
- G02F 1/133504: {Diffusing, scattering, diffracting elements (associated to illuminating devices G02F1/133606)}
- G02F 1/133528: {Polarisers}
- G02F 1/133548: {Wire-grid polarisers}
- G06F 1/1637: {Details related to the display arrangement, including those related to the mounting of the display in the housing}
- G02F 1/133502: {Antiglare, refractive index matching layers}
- 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
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A display panel includes a first base layer, a second base layer facing the first base layer, and in order between the first base layer and the second base layer, from the first base layer: an image display layer which provides light, a polarization layer which receives the light from the image display layer and transmits a polarized component of the light toward the second base layer, and a lens layer.

## Claims

### Claim 1

A display panel, comprising:
a first base layer;
a second base layer facing the first base layer;
an image display layer which is between the first base layer and the second base layer and provides light;
a polarization layer which is between the image display layer and the second base layer, receives the light from the image display layer and transmits a polarized component of the light toward the second base layer, the polarization layer including a plurality of patterns extending along an extension direction and spaced apart from each other along a direction intersecting the extension direction; and
a plurality of pattern layers which are between the polarization layer and the second base layer and have refractive indices different from each other,
wherein the plurality of pattern layers which are between the polarization layer and the second base layer includes:
a lower refractive layer and an upper refractive layer which face each other, the lower refractive layer having a refractive index greater than a refractive index of the upper refractive layer, and
the lower refractive layer which has the refractive index greater than the refractive index of the upper refractive layer defining a plurality of protrusions of a lens layer which extend along the direction in which the plurality of patterns of the polarization layer are spaced apart from each other.

### Claim 2 (depends on 1)

The display panel of claim 1, wherein the polarization layer includes a wire-grid polarizer.

### Claim 3 (depends on 1)

The display panel of claim 1, wherein the lens layer includes in order from the first base layer to the second base layer:
the lower refractive layer defining the plurality of protrusions protruding toward the second base layer; and
the upper refractive layer covering the plurality of protrusions of the lower refractive layer.

### Claim 4 (depends on 3)

The display panel of claim 3, wherein each of the plurality of protrusions has a rectangular shape in cross-section.

### Claim 5 (depends on 3)

The display panel of claim 3, wherein each of the plurality of protrusions has a trapezoidal shape in cross-section.

### Claim 6 (depends on 5)

The display panel of claim 5, wherein
each of the plurality of protrusions has a thickness in a direction from the first base layer to the second base layer, and
the thickness is about 10 micrometers to about 100 micrometers.

### Claim 7 (depends on 4)

The display panel of claim 4, wherein
each of the plurality of protrusions includes:
a top surface which is furthest from the first base layer and having an upper width along the first base layer, and
a bottom surface which is closest to the first base layer and having a lower width along the first base layer, and
each of the upper width of the top surface and the lower width of the bottom surface is about 10 micrometers to about 60 micrometers.

### Claim 8 (depends on 7)

The display panel of claim 7, wherein
adjacent protrusions among the plurality of protrusions include bottom surfaces spaced apart from each other by a distance, and
the distance is about 5 micrometers to about 30 micrometers.

### Claim 9 (depends on 3)

The display panel of claim 3, wherein
the refractive index of the lower refractive layer is equal to or greater than about 1.55 and less than about 1.75, and
the refractive index of the upper refractive layer is equal to or greater than about 1.20 and less than about 1.55.

### Claim 10 (depends on 1)

The display panel of claim 1, wherein
the image display layer includes in order from the first base layer:
a first electrode; and
a second electrode facing the first electrode,
the image display layer emits the light in a direction from the first electrode toward the second electrode.

### Claim 11 (depends on 1)

The display panel of claim 1, further comprising a low-refractive layer facing the lens layer with the second base layer therebetween,
wherein
the low-refractive layer has a refractive index and the second base layer has a refractive index, and
the refractive index of the low-refractive layer is less than the refractive index of the second base layer.

### Claim 12

A display panel, comprising:
an image display layer which provides light;
a polarization layer including a plurality of nano-patterns extending along an extension direction and spaced apart from each other along a direction intersecting the extension direction; and
a plurality of pattern layers which are on the polarization layer and have refractive indices different from each other,
wherein the plurality of pattern layers includes:
a lower refractive layer and an upper refractive layer which face each other, the lower refractive layer having a refractive index greater than a refractive index of the upper refractive layer, and
the lower refractive layer which has the refractive index greater than the refractive index of the upper refractive layer defining a plurality of protrusions of a lens layer which extend along the direction in which the plurality of patterns of the polarization layer are spaced apart from each other.

### Claim 13 (depends on 12)

The display panel of claim 12, wherein
the image display layer provides the light in a light-emitting direction, and
the polarization layer and the lens layer are in order from the image display layer, in the light-emitting direction.

### Claim 14 (depends on 12)

The display panel of claim 12, wherein the lens layer includes in order from the image display layer:
the lower refractive layer; and
the upper refractive layer covering the lower refractive layer.

### Claim 15

A method of providing a display panel, the method comprising:
providing an image display layer on a first base layer;
providing a polarization layer facing the first base layer with the image display layer therebetween, the polarization layer including a plurality of nano-patterns extending along an extension direction and spaced apart from each other along a direction intersecting the extension direction;
providing a plurality of pattern layers which are on the polarization layer and have refractive indices different from each other, the plurality of pattern layers including a lower refractive layer and an upper refractive layer which face each other, the lower refractive layer having a refractive index greater than a refractive index of the upper refractive layer; and
providing the lower refractive layer which has the refractive index greater than the refractive index of the upper refractive layer defining a plurality of protrusions of a lens layer which extend along the direction in which the plurality of patterns of the polarization layer are spaced apart from each other.

### Claim 16 (depends on 15)

The method of claim 15, wherein the providing the lens layer includes providing in order from the first base layer:
the lower refractive layer defining the plurality of protrusions protruding in a direction away from the first base layer; and
the upper refractive layer covering the lower refractive layer.

### Claim 17 (depends on 15)

The method of claim 15, wherein
the providing the lens layer includes providing a second base layer facing the polarization layer with the lens layer therebetween, and
the lens layer and the polarization layer are between the first base layer and the second base layer.