# US 12,601,943 B2 · Display panel, preparation method of display panel and display device

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- Number: US 12,601,943 B2
- Document ID: US12601943B2
- Status: Granted
- Kind: B2
- Application number: 18/647,149
- Filed: 2024-04-26
- Published: 2024-08-22
- Granted: 2026-04-14
- Earliest claimed: 2023-12-29
- Assignees: Xiamen Tianma Optoelectronics Co., Ltd.
- Applicants: Xiamen Tianma Optoelectronics Co., Ltd.
- Inventors: Wenxing Xi; Jixiang Chen; Xuhui Peng; Qiaoning Zheng; Hongyuan Huang; Xiaolin Wang; Wei Huang
- Web page: https://patentgrep.com/patent/US12601943B2

## CPC

- G02F 1/133502: {Antiglare, refractive index matching layers}
- G02F 1/13338: {Input devices, e.g. touch panels}
- G02F 1/136209: {Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element}
- G02F 1/136286: {Wiring, e.g. gate line, drain line}
- G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)}
- G02F 1/133514: {Colour filters}
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS

## Abstract

Provided are a display panel and a preparation method thereof and a display device. The display panel includes an array substrate, where the array substrate includes a first base, a first signal wire layer located on a side of the first base and an anti-reflection layer located between the first signal wire layer and the first base. The display panel further includes a display region and a non-display region; the first signal wire layer includes a first signal wire located in the display region, and the anti-reflection layer includes a first anti-reflection structure located in the display region and a second anti-reflection structure located in the non-display region. An orthographic projection of the first anti-reflection structure on a plane where the first base is located covers at least part of an orthographic projection of the first signal wire on the plane where the first base is located.

## Claims

### Claim 1

A display panel, comprising an array substrate, wherein
the array substrate comprises a first base, a first signal wire layer located on a side of the first base, and an anti-reflection layer located between the first signal wire layer and the first base;
wherein the display panel further comprises a display region and a non-display region; the first signal wire layer comprises a first signal wire located in the display region, and the anti-reflection layer comprises a first anti-reflection structure located in the display region and a second anti-reflection structure located in the non-display region; and
an orthographic projection of the first anti-reflection structure on a plane where the first base is located covers at least part of an orthographic projection of the first signal wire on the plane where the first base is located;
wherein the first signal wire layer further comprises a second signal wire located in the non-display region; the second anti-reflection structure comprises a first anti-reflection sub-structure and a second anti-reflection sub-structure, the second anti-reflection sub-structure is located on a side of the first anti-reflection sub-structure facing an edge of the first base, and a first gap exists between the first anti-reflection sub-structure and the second anti-reflection sub-structure, wherein the first gap penetrates through the anti-reflection layer; and an orthographic projection of the first anti-reflection sub-structure on the plane where the first base is located covers an orthographic projection of the second signal wire on the plane where the first base is located; and
wherein the display panel further comprises a light absorption layer located on a side of the anti-reflection layer facing away from the first base, an orthographic projection of the light absorption layer on the plane where the first base is located covers an orthographic projection of the first gap on the plane where the first base is located.

### Claim 2 (depends on 1)

The display panel according to claim 1, further comprising an opposing substrate located on a side of the array substrate, wherein the opposing substrate comprises a second base;
wherein the light absorption layer comprises a black light absorption layer located in the opposing substrate, and the black light absorption layer is located on a side of the second base facing the array substrate.

### Claim 3 (depends on 1)

The display panel according to claim 1, further comprising an opposing substrate located on a side of the array substrate, wherein the opposing substrate comprises a second base;
wherein the light absorption layer comprises light-filtering structures having at least two different colors, the light-filtering structures are arranged to be stacked in the opposing substrate, and the light-filtering structures are located on a side of the second base facing the array substrate.

### Claim 4 (depends on 1)

The display panel according to claim 1, wherein the second anti-reflection structure extends to an edge of the first base.

### Claim 5 (depends on 1)

The display panel according to claim 1, wherein the first signal wire layer comprises a plurality of first signal wires, and the plurality of first signal wires extend along a first direction and are arranged along a second direction, wherein the first direction intersects the second direction;
the anti-reflection layer comprises a plurality of first anti-reflection structures, and the plurality of first anti-reflection structures extend along the first direction and are arranged along the second direction; and
the plurality of first signal wires correspond to the plurality of first anti-reflection structures.

### Claim 6 (depends on 1)

The display panel according to claim 1, wherein a shape of the first anti-reflection structure is similar to a shape of the first signal wire;
the first signal wire comprises a first boundary, and the first anti-reflection structure comprises a second boundary; and
two positions in the first boundary comprise a first position and a second position, a minimum distance between the first position and the second boundary is d1, and a minimum distance between the second position and the second boundary is d2, wherein |d1−d2|/d1≤10%.

### Claim 7 (depends on 6)

The display panel according to claim 6, wherein 0<d1<1.5 μm; and 0<d2<1.5 μm.

### Claim 8 (depends on 6)

The display panel according to claim 6, wherein the first signal wire layer and the anti-reflection layer are adjacent and in contact with each other; and
the first anti-reflection structure shares a photomask with the first signal wire.

### Claim 9 (depends on 1)

A preparation method of the display panel according to claim 1, comprising:
providing the first base, and sequentially preparing the anti-reflection layer and the first signal wire layer on the side of the first base; and
patterning the anti-reflection layer and the first signal wire layer to form, in the anti-reflection layer, the first anti-reflection structure located in the display region and the second anti-reflection structure located in the non-display region, and to form, in the first signal wire layer, the first signal wire located in the display region.

### Claim 10 (depends on 9)

The preparation method according to claim 9, wherein patterning the anti-reflection layer and the first signal wire layer comprises:
patterning the anti-reflection layer and the first signal wire layer by using a same grayscale mask process to form, in the anti-reflection layer, the first anti-reflection structure located in the display region and the second anti-reflection structure located in the non-display region, and to form, in the first signal wire layer, the first signal wire located in the display region, wherein
a shape of the first anti-reflection structure is similar to a shape of the first signal wire;
the first signal wire comprises a first boundary, and the first anti-reflection structure comprises a second boundary; and
two positions in the first boundary comprise a first position and a second position, a minimum distance between the first position and the second boundary is d1, and a minimum distance between the second position and the second boundary is d2, wherein |d1−d2|/d1≤10%.

### Claim 11 (depends on 9)

The preparation method according to claim 9, wherein patterning the anti-reflection layer and the first signal wire layer comprises:
patterning the anti-reflection layer and the first signal wire layer by using a same grayscale mask process to form, in the anti-reflection layer, the first anti-reflection structure and a third anti-reflection structure which are located in the display region and the second anti-reflection structure located in the non-display region, and to form, in the first signal wire layer, the first signal wire located in the display region; and
the preparation method further comprises:
preparing a second signal wire layer on a side of the first signal wire layer facing away from the first base; and
patterning the second signal wire layer to form a plurality of third signal wires, wherein an orthographic projection of the third anti-reflection structure on the plane where the first base is located covers at least part of an orthographic projection of a third signal wire of the plurality of third signal wires on the plane where the first base is located.

### Claim 12 (depends on 9)

The preparation method according to claim 9, wherein patterning the anti-reflection layer and the first signal wire layer comprises:
patterning the anti-reflection layer and the first signal wire layer by using a same grayscale mask process to form, in the anti-reflection layer, a first anti-reflection sub-structure and a second anti-reflection sub-structure which are located in the non-display region, wherein the second anti-reflection sub-structure is located on a side of the first anti-reflection sub-structure facing an edge of the first base, and a first gap exists between the first anti-reflection sub-structure and the second anti-reflection sub-structure; and
cutting the first base and the second anti-reflection structure along a cutting line.

### Claim 13 (depends on 1)

A display device, comprising the display panel according to claim 1.

### Claim 14

A display panel, comprising an array substrate, wherein the array substrate comprises a first base, a first signal wire layer located on a side of the first base, and an anti-reflection layer located between the first signal wire layer and the first base;
wherein the display panel further comprises a display region and a non-display region; the first signal wire layer comprises a first signal wire located in the display region, and the anti-reflection layer comprises a first anti-reflection structure located in the display region and a second anti-reflection structure located in the non-display region; and an orthographic projection of the first anti-reflection structure on a plane where the first base is located covers at least part of an orthographic projection of the first signal wire on the plane where the first base is located;
wherein the display panel further comprises at least one second signal wire layer, the at least one second signal wire layer is located on a side of the first signal wire layer facing away from the first base, and the at least one second signal wire layer comprises a plurality of third signal wires; and
wherein the anti-reflection layer further comprises a third anti-reflection structure located in the display region, and an orthographic projection of the third anti-reflection structure on the plane where the first base is located covers at least part of an orthographic projection of a third signal wire of the plurality of third signal wires on the plane where the first base is located.

### Claim 15 (depends on 14)

The display panel according to claim 14, wherein the plurality of third signal wires comprise a data signal wire; and the orthographic projection of the third anti-reflection structure on the plane where the first base is located covers at least part of an orthographic projection of the data signal wire on the plane where the first base is located; or
wherein the plurality of third signal wires comprise a touch signal wire; and the orthographic projection of the third anti-reflection structure on the plane where the first base is located covers at least part of an orthographic projection of the touch signal wire on the plane where the first base is located; or
wherein the plurality of third signal wires comprise a data signal wire and a touch signal wire; and the data signal wire and the touch signal wire are disposed in a same layer, or the data signal wire and the touch signal wire are disposed in different layers.

### Claim 16 (depends on 14)

The display panel according to claim 14, wherein the anti-reflection layer comprises a plurality of first anti-reflection structures, and the plurality of first anti-reflection structures extend along a first direction and are arranged along a second direction, wherein the first direction intersects the second direction;
the third anti-reflection structure comprises a plurality of anti-reflection subdivisions, wherein the plurality of anti-reflection subdivisions extend along the second direction and are arranged along the second direction;
along the second direction, an anti-reflection subdivision of the plurality of anti-reflection subdivisions is located between two adjacent first anti-reflection structures of the plurality of first anti-reflection structures, and a second gap exists between the anti-reflection subdivision and a first anti-reflection structure of the two adjacent first anti-reflection structures;
a third signal wire of the plurality of third signal wires comprises a first wire subdivision and a second wire subdivision connected to each other, an orthographic projection of the anti-reflection subdivision on the plane where the first base is located covers an orthographic projection of the first wire subdivision on the plane where the first base is located, and an orthographic projection of the second gap on the plane where the first base is located overlaps an orthographic projection of the second wire subdivision on the plane where the first base is located; and
the display panel further comprises a light-shielding layer, and an orthographic projection of the light-shielding layer on the plane where the first base is located covers at least part of the orthographic projection of the second wire subdivision on the plane where the first base is located.

### Claim 17 (depends on 14)

A display device, comprising the display panel according to claim 14.

### Claim 18 (depends on 14)

The display panel according to claim 14, wherein the first signal wire layer further comprises a second signal wire located in the non-display region;
the second anti-reflection structure comprises a first anti-reflection sub-structure and a second anti-reflection sub-structure, the second anti-reflection sub-structure is located on a side of the first anti-reflection sub-structure facing an edge of the first base, and a first gap exists between the first anti-reflection sub-structure and the second anti-reflection sub-structure, wherein the first gap penetrates through the anti-reflection layer; and
an orthographic projection of the first anti-reflection sub-structure on the plane where the first base is located covers an orthographic projection of the second signal wire on the plane where the first base is located.

### Claim 19

A display panel, comprising an array substrate, wherein the array substrate comprises a first base, a first signal wire layer located on a side of the first base, and an anti-reflection layer located between the first signal wire layer and the first base;
wherein the display panel further comprises a display region and a non-display region; the first signal wire layer comprises a first signal wire located in the display region, and the anti-reflection layer comprises a first anti-reflection structure located in the display region and a second anti-reflection structure located in the non-display region; and an orthographic projection of the first anti-reflection structure on a plane where the first base is located covers at least part of an orthographic projection of the first signal wire on the plane where the first base is located;
wherein the array substrate further comprises an opposing substrate, the opposing substrate is located on a side of the array substrate facing away from a light emission side of the display panel; or the opposing substrate is located on a side of the array substrate facing a light emission side of the display panel; and
wherein the array substrate further comprises a pixel circuit, a first electrode and a second electrode which are located on a side of the first base facing the opposing substrate;
the pixel circuit comprises a thin-film transistor, the thin-film transistor comprises a gate, a source and a drain, the gate is located in the first signal wire layer, and the source or the drain is electrically connected to and in contact with the first electrode; and
the opposing substrate comprises a second base, a light-filtering structure and a black light absorption layer, wherein the light-filtering structure and the black light absorption layer are located on a side of the second base facing the array substrate.

### Claim 20 (depends on 19)

A display device, comprising the display panel according to claim 19.