# US 12,225,754 B2 · Display device

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- Number: US 12,225,754 B2
- Document ID: US12225754B2
- Status: Granted
- Kind: B2
- Application number: 17/389,271
- Filed: 2021-07-29
- Published: 2022-05-26
- Granted: 2025-02-11
- Earliest claimed: 2020-11-24
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., LTD.
- Inventors: Nak Cho Choi; Dong Hyun Son; Se Wan Son
- Web page: https://patentgrep.com/patent/US12225754B2

## CPC

- H10K 59/121: characterised by the geometry or disposition of pixel elements
- H10K 59/122: Pixel-defining structures or layers, e.g. banks
- H10K 59/124: Insulating layers formed between TFT elements and OLED elements
- H10K 59/126: Shielding, e.g. light-blocking means over the TFTs
- H10K 59/38: comprising colour filters or colour changing media [CCM]
- H10K 59/40: OLEDs integrated with touch screens
- H10K 59/65: OLEDs integrated with inorganic image sensors
- H10K 59/8723: {Vertical spacers, e.g. arranged between the sealing arrangement and the OLED}
- H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers}
- H10K 59/8792: {comprising light absorbing layers, e.g. black layers}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

A display device includes: a substrate on which a display area and a transmission area are defined; a metal blocking layer disposed in the display area on the substrate; an inorganic insulation layer disposed on the metal blocking layer; an organic insulation layer disposed on the inorganic insulation layer; a pixel defining layer disposed on the organic insulation layer, where an opening is defined through the pixel defining layer; an emission layer disposed on the organic insulation layer, and in the opening; a planarization layer disposed in the transmission area, on the organic insulation layer; and an encapsulation layer disposed in the display area and the transmission area. The inorganic insulation layer is at least partially removed in the transmission area, the organic insulation layer is disposed in the display area and the transmission area, and the planarization layer contacts a side surface of the pixel defining layer.

## Claims

### Claim 1

A display device comprising:
a substrate on which a display area and a transmission area are defined;
a metal blocking layer disposed in the display area on the substrate;
an inorganic insulation layer disposed on the metal blocking layer;
an organic insulation layer disposed on the inorganic insulation layer;
a pixel defining layer disposed on the organic insulation layer, wherein an opening is defined through the pixel defining layer;
an emission layer disposed on the organic insulation layer and in the opening of the pixel defining layer;
a planarization layer disposed in the transmission area on the organic insulation layer; and
an encapsulation layer disposed in the display area and the transmission area,
wherein the inorganic insulation layer is at least partially removed in the transmission area,
the organic insulation layer is disposed in the display area and the transmission area, and
the planarization layer contacts a side surface of the pixel defining layer.

### Claim 2 (depends on 1)

The display device of claim 1, further comprising:
a spacer disposed on the pixel defining layer,
wherein the planarization layer is defined by a same layer as the spacer.

### Claim 3 (depends on 1)

The display device of claim 1, further comprising:
a spacer disposed on the pixel defining layer,
wherein the organic insulation layer includes a step portion disposed in the transmission area,
the planarization layer is disposed in the step portion, and
the planarization layer is defined by a same layer as the spacer.

### Claim 4 (depends on 1)

The display device of claim 1, wherein
a difference in surface level of the planarization layer disposed below the encapsulation layer of the transmission area is about 0.5 μm or less.

### Claim 5 (depends on 1)

The display device of claim 1, further comprising:
a light blocking layer and a color filter, which are disposed on the emission layer of the display area,
wherein an edge of the light blocking layer protrudes toward the transmission area more than an edge of the metal blocking layer.

### Claim 6 (depends on 5)

The display device of claim 5, wherein
a first opening is defined through the metal blocking layer to overlap the transmission area,
a second opening is defined through the light blocking layer to overlap the transmission area, and
a planar area of the second opening is smaller than a planar area of the first opening.

### Claim 7 (depends on 6)

The display device of claim 6, wherein a planar shape of the first opening and a planar shape of the second opening are substantially the same as each other.

### Claim 8 (depends on 5)

The display device of claim 5, further comprising:
a spacer disposed on the pixel defining layer,
wherein the planarization layer is defined by a same layer as the spacer.

### Claim 9 (depends on 5)

The display device of claim 5, further comprising:
a spacer disposed on the pixel defining layer,
wherein the organic insulation layer includes a step portion disposed in the transmission area,
the planarization layer is disposed in the step portion, and
the planarization layer is defined by a same layer as the spacer.

### Claim 10 (depends on 5)

The display device of claim 5, wherein a difference in surface height of the planarization layer disposed below the encapsulation layer of the transmission area is about 0.5 μm or less.

### Claim 11

A display device comprising:
a first display area including a first pixel area;
a second display area including a second pixel area and a transmission area which neighbor each other;
an optical device which overlaps the second display area;
a metal blocking layer disposed in the second pixel area;
an inorganic insulation layer disposed in the first pixel area, the second pixel area, and an edge of the transmission area;
an organic insulation layer disposed in the first display area and the second display area;
a pixel defining layer disposed on the organic insulation layer;
a planarization layer disposed in the transmission area on the organic insulation layer; and
an encapsulation layer disposed in the first display area and the second display area,
wherein the inorganic insulation layer covers an edge of the metal blocking layer, and
the planarization layer contacts a side surface of the pixel defining layer.

### Claim 12 (depends on 11)

The display device of claim 11, further comprising:
a spacer disposed on the pixel defining layer,
wherein the planarization layer is defined by a same layer as the spacer.

### Claim 13 (depends on 12)

The display device of claim 12, wherein a difference in surface height of the planarization layer disposed below the encapsulation layer of the transmission area is about 0.5 μm or less.

### Claim 14 (depends on 12)

The display device of claim 12, wherein
the organic insulation layer includes a step portion disposed in the transmission area, and
the planarization layer is disposed in the step portion.

### Claim 15 (depends on 11)

The display device of claim 11, further comprising:
an emission layer disposed in the first pixel area and the second pixel area; and
a light blocking layer and a color filter which are disposed on the emission layer,
wherein an edge of the light blocking layer protrudes toward the transmission area more than an edge of the metal blocking layer.

### Claim 16 (depends on 15)

The display device of claim 15, wherein the light blocking layer and the color filter are disposed on the encapsulation layer.

### Claim 17 (depends on 15)

The display device of claim 15, wherein
a first opening is defined through the metal blocking layer to overlap the transmission area,
a second opening is defined through the light blocking layer to overlap the transmission area, and
a planar area of the second opening is smaller than a planar area of the first opening.

### Claim 18 (depends on 17)

The display device of claim 17, wherein a planar shape of the first opening and a planar shape of the second opening are substantially to the same as each other.

### Claim 19 (depends on 15)

The display device of claim 15, further comprising:
a spacer disposed on the pixel defining layer,
wherein the planarization layer is defined by a same layer as the spacer.

### Claim 20 (depends on 15)

The display device of claim 15, further comprising:
a spacer disposed on the pixel defining layer,
wherein the organic insulation layer includes a step portion disposed in the transmission area,
the planarization layer is disposed in the step portion, and
the planarization layer is defined by a same layer as the spacer.