# US 2022/0285656 A1 · Display device and method of manufacturing the same

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- Number: US 2022/0285656 A1
- Document ID: US20220285656A1
- Status: Published application
- Kind: A1
- Application number: 17/517,887
- Filed: 2021-11-03
- Published: 2022-09-08
- Earliest claimed: 2021-03-05
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: YOUNGKI CHAI; DONGJO KIM; YOUNGJI KIM; SEONGGEUN WON; DANBI CHOI; YOUNG SEO CHOI; SOUKJUNE HWANG
- Web page: https://patentgrep.com/patent/US20220285656A1

## CPC

- H10K 59/121: characterised by the geometry or disposition of pixel elements
- H10K 59/126: Shielding, e.g. light-blocking means over the TFTs
- H10K 59/353: {characterised by the geometrical arrangement of the RGB subpixels}
- H10K 59/65: OLEDs integrated with inorganic image sensors
- H10K 59/8791: {Arrangements for improving contrast, e.g. preventing reflection of ambient light}
- H10K 59/873: {Encapsulations}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

A display device with increased light transmittance to a functional module includes a substrate, a light blocking layer, an insulating layer, emission elements, and a polarization member. The substrate includes a first display region including a first pixel region and a transmission region, and a second display region surrounding at least a portion of the first display region and including a second pixel region. The light blocking layer is disposed in both display regions on the substrate and includes a first opening overlapping the transmission region. The insulating layer covers the light blocking layer on the substrate. The emission elements are disposed in the first and second pixel regions on the insulating layer. The polarization member is disposed on the emission elements and includes a second opening overlapping die first opening. An area of the second opening is greater than or equal to an area of the first opening.

## Claims

### Claim 1

A display device comprising:
substrate including a first display region including a first pixel region and a transmission region, and a second display region surrounding at least a portion of the first display region and including a second pixel region;
a light blocking layer disposed on the substrate and in the first and second display regions, wherein the light blocking layer includes a first opening overlapping the transmission region in a vertical direction normal to a surface of the substrate;
an insulating layer covering the light blocking layer on the substrate;
emission elements disposed on the insulating layer in the first and second pixel regions; and
a polarization member disposed on the emission elements, wherein the polarization member includes a second opening overlapping the first opening in the vertical direction;
wherein an area of the second opening is greater than or equal to an area of the first opening.

### Claim 2 (depends on 1)

The display device of claim 1. further comprising:
a functional module disposed under the substrate and corresponding to the first display region.

### Claim 3 (depends on 2)

The display device of claim 2, wherein the functional module includes:
a camera module, a face recognition sensor module, a pupil recognition sensor, an acceleration sensor module, a proximity sensor module, an infrared sensor module, or a illuminance sensor module.

### Claim 4 (depends on 1)

The display device of claim 1, wherein the polarization member includes:
a phase delay layer disposed on the emission elements;
a support layer disposed on the phase layer; and
a polarization layer disposed on the support layer.

### Claim 5 (depends on 4)

The display device of claim 4, wherein the support layer includes tri acetyl cellulose (“TAC”), and
wherein the polarization layer includes polyvinyl alcohol (“PVA”).

### Claim 6 (depends on 4)

The display device of claim 4, wherein the second opening is a removed portion of the polarization layer.

### Claim 7

The display device of claim. 1. wherein the first display region further comprises:
a peripheral region surrounding the first pixel region and the transmission region.

### Claim 8 (depends on 7)

The display device of claim 7, wherein the light blocking layer overlaps the first pixel region, the second pixel region, and the peripheral region, and
wherein the light blocking layer does not overlap the transmission region.

### Claim 9 (depends on 1)

The display device of claim 1, further comprising:
an encapsulation layer disposed between the emission elements and the polarization member; and
a window member disposed on the polarization member.

### Claim 10

A method of manufacturing a display device, the method comprising:
providing a substrate including a first display region including a first pixel region and a transmission region, and a second display region surrounding at least a portion of the first display region and including a second pixel region;
forming a light blocking layer in the first and second display regions on the substrate;
forming a first opening by removing a portion of the light blocking layer overlapping the transmission region;
forming an insulating layer covering the light blocking layer on the substrate;
forming emission elements in the first and second pixel regions on the insulating layer;
forming a polarization member on the emission elements; and
forming a second opening by irradiating a laser to a lower portion of the substrate overlapping the transmission region in order to remove a portion of the polarization member overlapping the first opening.

### Claim 11 (depends on 10)

The method of claim 10, wherein the polarization member includes:
a phase delay layer formed on the emission elements;
a support layer formed on fhe phase delay layer; and
a polarization layer formed on the support layer.

### Claim 12 (depends on 11)

The method of claim 11, wherein the support layer includes tri acetyl cellulose (“TAC”) and the polarization layer includes polyvinyl alcohol (“PVA”).

### Claim 13 (depends on 11)

The method of claim 11, wherein the second opening is a removed portion of the polarization layer.

### Claim 14 (depends on 11)

The method of claim 11, wherein the forming of the second opening includes:
scanning a portion of the polarization layer overlapping the first opening in a first direction using the laser, and
forming the second opening in a second direction that is perpendicular to the fist direction.

### Claim 15 (depends on 10)

The method of claim 10, wherein an area of the second opening is greater than or equal to an area of the first opening.

### Claim 16 (depends on 10)

The method of claim 10, wherein the light blocking layer overlaps the first pixel region, the second pixel region, and the peripheral region, and
wherein the light blocking layer does not overlap the transmission region.

### Claim 17 (depends on 10)

The method of claim 10, further comprising:
cleaning the second opening with a neutral solution after forming the second opening.

### Claim 18 (depends on 17)

The method of claim 17, wherein the neutral solution has a temperature of about 5° C. to about 90° C.

### Claim at position 19 (depends on 10)

l9. The method of claim 10, wherein the laser includes a continuous wave laser or a pulsed laser.

### Claim 20 (depends on 10)

The method of claim 10, wherein a wavelength of the laser is about 340 nm to about 1000 nm, and
wherein an intensity of the laser is about 0.5 W to about 20 W.