# US 12,225,782 B2 · Display apparatus and method of manufacturing the same

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- Number: US 12,225,782 B2
- Document ID: US12225782B2
- Status: Granted
- Kind: B2
- Application number: 18/454,420
- Filed: 2023-08-23
- Published: 2023-12-14
- Granted: 2025-02-11
- Earliest claimed: 2020-07-01
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Chungi You; Hyounghak Kim
- Web page: https://patentgrep.com/patent/US12225782B2

## CPC

- 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 59/123: Connection of the pixel electrodes to the thin film transistors [TFT]
- H10K 59/124: Insulating layers formed between TFT elements and OLED elements
- H10K 59/352: {the areas of the RGB subpixels being different}
- H10K 59/65: OLEDs integrated with inorganic image sensors
- H10K 59/873: {Encapsulations}
- H10K 2102/102: {comprising tin oxides, e.g. fluorine-doped SnO2}
- H10K 2102/103: {comprising indium oxides, e.g. ITO}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

A display apparatus includes a substrate including a main display area, a component area, and a peripheral area. The component area includes a transmission area, and the peripheral area is arranged outside the main display area. The display apparatus further includes a main thin-film transistor arranged in the main display area, a main organic light-emitting diode arranged in the main display area and connected to the main thin-film transistor, an auxiliary thin-film transistor arranged in the component area, an auxiliary organic light-emitting diode arranged in the component area and connected to the auxiliary thin-film transistor, and a lower metal layer arranged between the substrate and the auxiliary thin-film transistor in the component area and having an undercut structure.

## Claims

### Claim 1

A display apparatus, comprising:
a substrate comprising a main display area, a component area, and a peripheral area,
wherein the component area comprises a transmission area, and the peripheral area is arranged outside the main display area;
a main thin-film transistor arranged in the main display area;
a main organic light-emitting diode arranged in the main display area and connected to the main thin-film transistor;
an auxiliary thin-film transistor arranged in the component area;
an auxiliary organic light-emitting diode arranged in the component area and connected to the auxiliary thin-film transistor; and
a lower metal layer arranged between the substrate and the auxiliary thin-film transistor in the component area and having an undercut structure.

### Claim 2 (depends on 1)

The display apparatus of claim 1, wherein the lower metal layer comprises a first metal layer having a first thickness in a thickness direction of the display apparatus, and a second metal layer having a second thickness in the thickness direction of the display apparatus,
wherein the second thickness is greater than the first thickness.

### Claim 3 (depends on 2)

The display apparatus of claim 2, wherein the first thickness is about 200 Å to about 400 Å, and the second thickness is about 2,500 Å to about 3,500 Å.

### Claim 4 (depends on 2)

The display apparatus of claim 2, wherein the lower metal layer comprises a first hole corresponding to the transmission area.

### Claim 5 (depends on 2)

The display apparatus of claim 2, wherein the second metal layer has the undercut structure.

### Claim 6 (depends on 2)

The display apparatus of claim 2, wherein the first metal layer comprises at least one of Ti, Cr, ITO, IZO, ZnO, ln2O3, IGO, and AZO.

### Claim 7 (depends on 2)

The display apparatus of claim 2, wherein the second metal layer comprises Mo.

### Claim 8 (depends on 1)

The display apparatus of claim 1, wherein the lower metal layer is directly arranged on an upper surface of the substrate.

### Claim 9 (depends on 1)

The display apparatus of claim 1, wherein the lower metal layer and the auxiliary thin-film transistor at least partially overlap each other.

### Claim 10 (depends on 1)

The display apparatus of claim 1, further comprising:
an encapsulation substrate arranged above the substrate.

### Claim 11 (depends on 1)

The display apparatus of claim 1, further comprising:
a component arranged below the substrate in the component area.

### Claim 12 (depends on 11)

The display apparatus of claim 11, wherein the component comprises an imaging device or a sensor.

### Claim 13

A display apparatus, comprising:
a substrate comprising a main display area, a component area, and a peripheral area,
wherein the component area comprises a transmission area, and the peripheral area is arranged outside the main display area;
a main thin-film transistor arranged in the main display area;
a main organic light-emitting diode arranged in the main display area and connected to the main thin-film transistor;
an auxiliary thin-film transistor arranged in the component area;
an auxiliary organic light-emitting diode arranged in the component area and connected to the auxiliary thin-film transistor;
a lower metal layer arranged between the substrate and the auxiliary thin-film transistor in the component area; and
a metal layer arranged on the lower metal layer and having an undercut structure.

### Claim 14 (depends on 13)

The display apparatus of claim 13, further comprising:
an auxiliary storage capacitor arranged in the component area,
wherein the auxiliary thin-film transistor comprises an auxiliary gate electrode, and the auxiliary storage capacitor comprises an auxiliary lower electrode and an auxiliary upper electrode.

### Claim 15 (depends on 14)

The display apparatus of claim 14, wherein the metal layer comprises a first metal layer and a second metal layer arranged on the first metal layer and having the undercut structure.

### Claim 16 (depends on 15)

The display apparatus of claim 15, wherein the metal layer is arranged on a same layer as the auxiliary gate electrode.

### Claim 17 (depends on 15)

The display apparatus of claim 15, wherein the metal layer is arranged on a same layer as the auxiliary upper electrode.