# US 12,225,771 B2 · Display device and method of manufacturing the same

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- Number: US 12,225,771 B2
- Document ID: US12225771B2
- Status: Granted
- Kind: B2
- Application number: 17/318,350
- Filed: 2021-05-12
- Published: 2022-03-10
- Granted: 2025-02-11
- Earliest claimed: 2020-09-10
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Hyungjun Kim; Soyoung Koo; Eok Su Kim; Yunyong Nam; Jun Hyung Lim; Kyungjin Jeon
- Web page: https://patentgrep.com/patent/US12225771B2

## CPC

- H10D 86/481: {integrated with passive devices, e.g. auxiliary capacitors}
- H10D 86/60: wherein the TFTs are in active matrices
- H10K 59/1216: {the pixel elements being capacitors}
- H10K 59/126: Shielding, e.g. light-blocking means over the TFTs
- H10K 59/131: Interconnections, e.g. wiring lines or terminals
- H10D 86/441: {Interconnections, e.g. scanning lines}
- H10K 59/1201: {Manufacture or treatment}
- H10K 59/123: Connection of the pixel electrodes to the thin film transistors [TFT]
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

A display device includes a first transistor including a first transistor including a light blocking pattern on a substrate, an active pattern on the light blocking pattern, and a gate electrode on the active pattern, a second transistor configured to provide a data voltage to the first transistor in response to a gate signal, and a storage capacitor electrically connected to the gate electrode and the light blocking pattern, and including a first conductive pattern in a same layer as the light blocking pattern, a second conductive pattern on the first conductive pattern and overlapping the first conductive pattern, a third conductive pattern in a same layer as the gate electrode, overlapping the second conductive pattern, and electrically connected to the first conductive pattern, and a fourth conductive pattern on the third conductive pattern, overlapping the third conductive pattern, and electrically connected to the second conductive pattern.

## Claims

### Claim 1

A display device comprising:
a first transistor comprising a light blocking pattern on a substrate, an active pattern comprising a drain region and a source region on the light blocking pattern, and a gate electrode on the active pattern;
a second transistor for providing a data voltage to the first transistor in response to a gate signal;
a first electrode on the gate electrode, directly electrically connected to the light blocking pattern, and directly electrically connected to the drain region or the source region;
an emission layer on the first electrode;
a storage capacitor electrically connected to the gate electrode and the light blocking pattern, and comprising:
a first conductive pattern in a same layer as the light blocking pattern;
a second conductive pattern on the first conductive pattern and overlapping the first conductive pattern;
a third conductive pattern in a same layer as the gate electrode, overlapping the second conductive pattern, at a different layer than the first conductive pattern, and electrically connected to the first conductive pattern; and
a fourth conductive pattern on the third conductive pattern, overlapping the third conductive pattern, and electrically connected to the second conductive pattern; and
a semiconductor pattern in a same layer as the active pattern, and contacting the second conductive pattern, wherein the semiconductor pattern is not doped,
wherein the first electrode directly contacts the emission layer and the light blocking pattern, and directly contacts the drain region or the source region.

### Claim 2 (depends on 1)

The display device of claim 1, wherein the first conductive pattern and the second conductive pattern form a first capacitance.

### Claim 3 (depends on 2)

The display device of claim 2, wherein the second conductive pattern and the third conductive pattern form a second capacitance.

### Claim 4 (depends on 3)

The display device of claim 3, wherein the third conductive pattern and the fourth conductive pattern form a third capacitance.

### Claim 5 (depends on 1)

The display device of claim 1, wherein the first conductive pattern, the second conductive pattern, and the third conductive pattern overlap each other.

### Claim 6 (depends on 1)

The display device of claim 1, wherein the first conductive pattern, the second conductive pattern, and the fourth conductive pattern overlap each other.

### Claim 7 (depends on 1)

The display device of claim 1, wherein the first conductive pattern, the third conductive pattern, and the fourth conductive pattern overlap each other.

### Claim 8 (depends on 1)

The display device of claim 1, wherein the second conductive pattern, the third conductive pattern, and the fourth conductive pattern overlap each other.

### Claim 9 (depends on 1)

The display device of claim 1, further comprising a second electrode on the emission layer,
wherein the fourth conductive pattern is in a same layer as the first electrode.

### Claim 10 (depends on 1)

The display device of claim 1, wherein the first conductive pattern, the third conductive pattern, and the gate electrode are for receiving a first signal, and
wherein the second conductive pattern, the fourth conductive pattern, and the light blocking pattern are for receiving a second signal.

### Claim 11 (depends on 1)

The display device of claim 1, wherein the first conductive pattern and the third conductive pattern comprise a same material.