# US 11,906,856 B2 · Display panel and display device

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- Number: US 11,906,856 B2
- Document ID: US11906856B2
- Status: Granted
- Kind: B2
- Application number: 16/963,833
- Filed: 2020-07-08
- Published: 2023-03-23
- Granted: 2024-02-20
- Earliest claimed: 2020-05-12
- Assignees: Tcl China Star Optoelectronics Technology Co., Ltd.
- Applicants: Tcl China Star Optoelectronics Technology Co., Ltd.
- Inventors: Jing Liu
- Web page: https://patentgrep.com/patent/US11906856B2

## CPC

- G02F 1/134345: {Subdivided pixels, e.g. for grey scale or redundancy}
- G02F 1/136222: {Colour filters incorporated in the active matrix substrate}
- G02F 1/133707: {Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes}
- 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

A display panel and a display device are provided. The display panel includes an array substrate, a color filter substrate disposed opposite to the array substrate, and a liquid crystal layer disposed between the color filter substrate and the array substrate. Through applying voltages at different partitions on a side of a color filter substrate, liquid crystal molecules have different deflection angles at different voltage parts, which can arrange the liquid crystal molecules in multiple directions on a vertical plane, ensuring high aperture ratio, and improving display viewing angles of the display device while increasing alignment domains.

## Claims

### Claim 1

A display panel, comprising:
an array substrate comprising a plurality of sub-pixels;
a color filter substrate disposed opposite to the array substrate and provided with a first pixel electrode, wherein the first pixel electrode has at least two voltage parts insulated from each other in an area corresponding to each of the sub-pixels, and there is a voltage difference between the at least two voltage parts; and
a liquid crystal layer disposed between the color filter substrate and the array substrate,
wherein the at least two voltage parts comprise a first voltage part and a second voltage part, and the first voltage part is disposed surrounding the second voltage part.

### Claim 2 (depends on 1)

The display panel according to claim 1, wherein the array substrate is provided with a second pixel electrode,
a gray-scale voltage is applied to the second pixel electrode,
the first pixel electrode applies a first voltage to the first voltage part and applies a second voltage to the second voltage part, and
when the gray-scale voltage is a negative gray-scale voltage, the second voltage is a negative voltage, and when the gray-scale voltage is a positive gray-scale voltage, the second voltage is a positive voltage.

### Claim 3 (depends on 2)

The display panel according to claim 2, wherein a voltage difference between the first voltage and the second voltage ranges from 2V to 5V.

### Claim 4 (depends on 3)

The display panel according to claim 3, wherein a voltage value of the first voltage ranges from 0V to 3V and a voltage value of the second voltage ranges from 2V to 5V, or
the voltage value of the first voltage ranges from −3V to 0V and the voltage value of the second voltage ranges from −5V to −2V.

### Claim 5

A display device comprising a display panel, wherein the display panel comprises:
an array substrate comprising a plurality of sub-pixels;
a color filter substrate disposed opposite to the array substrate and provided with a first pixel electrode, wherein the first pixel electrode has at least two voltage parts insulated from each other in an area corresponding to each of the sub-pixels, and there is a voltage difference between the at least two voltage parts; and
a liquid crystal layer disposed between the color filter substrate and the array substrate,
wherein the at least two voltage parts comprise a first voltage part and a second voltage part, and the first voltage part is disposed surrounding the second voltage part.

### Claim 6 (depends on 5)

The display device according to claim 5, wherein the array substrate is provided with a second pixel electrode,
a gray-scale voltage is applied to the second pixel electrode,
the first pixel electrode applies a first voltage to the first voltage part and applies a second voltage to the second voltage part, and
when the gray-scale voltage is a negative gray-scale voltage, the second voltage is a negative voltage, and when the gray-scale voltage is a positive gray-scale voltage, the second voltage is a positive voltage.

### Claim 7 (depends on 6)

The display device according to claim 6, wherein a voltage difference between the first voltage and the second voltage ranges from 2V to 5V.

### Claim 8 (depends on 7)

The display device according to claim 7, wherein a voltage value of the first voltage ranges from 0V to 3V and a voltage value of the second voltage ranges from 2V to 5V, or
the voltage value of the first voltage ranges from −3V to 0V and the voltage value of the second voltage ranges from −5V to −2V.