# US 2026/0090221 A1 · Display device

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- Number: US 2026/0090221 A1
- Document ID: US20260090221A1
- Status: Published application
- Kind: A1
- Application number: 19/313,603
- Filed: 2025-08-28
- Published: 2026-03-26
- Earliest claimed: 2024-09-26
- Assignees: LG Display Co., Ltd.
- Applicants: LG Display Co., Ltd.
- Inventors: Jinseong KIM; Yongchan PARK
- Web page: https://patentgrep.com/patent/US20260090221A1

## CPC

- H10K 59/126: Shielding, e.g. light-blocking means over the TFTs
- G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element
- H10K 59/123: Connection of the pixel electrodes to the thin film transistors [TFT]
- H10K 59/131: Interconnections, e.g. wiring lines or terminals
- G09G 2300/0426: Layout of electrodes and connections
- G09G 2300/0819: used for counteracting undesired variations, e.g. feedback or autozeroing
- G09G 2300/0852: being a dynamic memory with more than one capacitor
- G09G 2300/0861: with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)

## Abstract

A display device according to one embodiment includes a substrate including a display area and a non-display area adjacent to the display area. A first light-blocking layer is on the substrate. An active layer including a semiconductor area of a first transistor is on the first light-blocking layer, and a gate layer including a gate electrode of the first transistor is on the active layer. A source metal layer is on the gate layer and includes an anode connection electrode directly connected to the active layer to receive a driving current from the first transistor. A pixel electrode is on the source metal layer and directly connected to the anode connection electrode. A light-emitting layer is on the pixel electrode, and a common electrode is on the light-emitting layer. This structure supports efficient electrical connectivity and a simplified manufacturing process.

## Claims

### Claim 1

A display device comprising:
a substrate including a display area and a non-display area adjacent to the display area;
a first light-blocking layer on the substrate;
a first transistor on the first light-blocking layer, the first transistor including a semiconductor area, a source electrode, a drain electrode, and a gate electrode;
an active layer including the semiconductor area of the first transistor;
a gate layer including the gate electrode of the first transistor on the active layer;
a source metal layer on the gate layer and including an anode connection electrode that is directly connected to the active layer and receives a driving current from the first transistor;
a pixel electrode on the source metal layer and directly connected to the anode connection electrode;
a light-emitting layer on the pixel electrode; and
a common electrode on the light-emitting layer.

### Claim 2 (depends on 1)

The display device of claim 1, further comprising:
a second light-blocking layer between the first light-blocking layer and the active layer; and
a first capacitor between the gate electrode of the first transistor and the source electrode of the first transistor,
wherein the first capacitor includes:
a first capacitor electrode disposed in the first light-blocking layer and electrically connected to the gate electrode of the first transistor; and
a second capacitor electrode disposed in the second light-blocking layer and electrically connected to the source electrode of the first transistor.

### Claim 3 (depends on 2)

The display device of claim 2, wherein the first and second capacitor electrodes overlap the semiconductor area of the first transistor.

### Claim 4 (depends on 2)

The display device of claim 2, further comprising:
a first scan line disposed in the first light-blocking layer and supplying a first scan signal; and
a second transistor supplying a data voltage to the gate electrode of the first transistor based on the first scan signal.

### Claim 5 (depends on 4)

The display device of claim 4, further comprising:
a third transistor supplying a reference voltage to the gate electrode of the first transistor based on a second scan signal;
a fourth transistor supplying a driving voltage to the drain electrode of the first transistor based on a first light-emitting signal; and
a fifth transistor electrically connecting the source electrode of the first transistor to the pixel electrode based on a second light-emitting signal.

### Claim 6 (depends on 5)

The display device of claim 5, further comprising a sixth transistor supplying an initialization voltage to the pixel electrode of the light-emitting element based on a third scan signal.

### Claim 7 (depends on 2)

The display device of claim 2, wherein the source metal layer further includes a first connection electrode electrically connecting the gate electrode of the first transistor to the first capacitor electrode.

### Claim 8 (depends on 1)

The display device of claim 1, further comprising:
a flexible film on one side of the substrate; and
a pad part disposed in the first light-blocking layer and electrically connected to the flexible film.

### Claim 9 (depends on 8)

The display device of claim 8, further comprising:
a first driving voltage line disposed in the source metal layer and extending from a first side of the non-display area adjacent to the flexible film, the display area, and a second side opposite to the first side of the non-display area in a first direction;
a second driving voltage line disposed in the first light-blocking layer and extending in a second direction intersecting the first direction in the display area; and
third driving voltage lines disposed in the gate layer and extending from the first side and the second side of the non-display area in the second direction.

### Claim 10 (depends on 9)

The display device of claim 9, further comprising:
a data driver between the flexible film and the display area and supplying a data voltage; and
a fan out line disposed in the first light-blocking layer, extending from the data driver to the display area, and overlapping the first driving voltage line and the third driving voltage line.

### Claim 11 (depends on 9)

The display device of claim 9, further comprising:
first low-potential lines disposed in the gate layer and extending from the first side and the second side of the non-display area in the first direction; and
a second low-potential line disposed in the source metal layer and extending from a third side adjacent to the first side of the non-display area in the second direction to electrically connect the first low-potential lines.

### Claim 12 (depends on 11)

The display device of claim 11, further comprising:
a fourth driving voltage line disposed in the source metal layer and extending from the third side of the non-display area in the second direction to electrically connect the third driving voltage lines; and
a gate driver between the fourth driving voltage line and the second low-potential line and supplying a gate signal.

### Claim 13

A display device comprising:
a substrate including a display area and a non-display area adjacent to the display area;
a light-emitting element including a pixel electrode and emits light;
a first transistor supplying a driving current to the pixel electrode;
an active layer on the substrate and including a semiconductor area of the first transistor;
a second transistor supplying the data voltage to a gate electrode of the first transistor based on a first scan signal;
a third transistor supplying a reference voltage to the gate electrode of the first transistor based on a second scan signal;
a fourth transistor supplying a driving voltage to a drain electrode of the first transistor based on a first light-emitting signal;
a fifth transistor including a drain electrode and a source electrode disposed in the active layer and electrically connecting the source electrode of the first transistor to the pixel electrode based on a second light-emitting signal; and
an anode connection electrode directly connecting the source electrode of the fifth transistor to the pixel electrode.

### Claim 14 (depends on 13)

The display device of claim 13, further comprising:
a first light-blocking layer between the substrate and the active layer;
a gate layer including a gate electrode of the first transistor on the active layer; and
a source metal layer on the gate layer and including the anode connection electrode.

### Claim 15 (depends on 14)

The display device of claim 14, further comprising:
a second light-blocking layer between the first light-blocking layer and the active layer; and
a first capacitor including a first capacitor electrode disposed in the first light-blocking layer and electrically connected to the gate electrode of the first transistor, and a second capacitor electrode disposed in the second light-blocking layer and electrically connected to the source electrode of the first transistor.

### Claim 16 (depends on 15)

The display device of claim 15, wherein the source metal layer further includes a first connection electrode electrically connecting the gate electrode of the first transistor to the first capacitor electrode.

### Claim 17 (depends on 14)

The display device of claim 14, further comprising:
a first scan line disposed in the first light-blocking layer and supplying the first scan signal to a gate electrode of the second transistor; and
a second scan line disposed in the first light-blocking layer and supplying the second scan signal to a gate electrode of the third transistor.

### Claim 18 (depends on 14)

The display device of claim 14, further comprising:
a flexible film on one side of the substrate; and
a pad part disposed in the first light-blocking layer and electrically connected to the flexible film.

### Claim 19 (depends on 18)

The display device of claim 18, further comprising:
a first driving voltage line disposed in the source metal layer and extending from a first side of the non-display area adjacent to the flexible film, the display area, and a second side opposite to the first side of the non-display area in a first direction;
a second driving voltage line disposed in the first light-blocking layer and extending in a second direction intersecting the first direction in the display area; and
third driving voltage lines disposed in the gate layer and extending from the first side and the second side of the non-display area in the second direction.

### Claim 20 (depends on 19)

The display device of claim 19, further comprising:
a data driver between the flexible film and the display area and supplying a data voltage; and
a fan out line disposed in the first light-blocking layer, extending from the data driver to the display area, and overlapping the first driving voltage line and the third driving voltage line.