# US 11,906,861 B2 · Display panel and display device

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- Number: US 11,906,861 B2
- Document ID: US11906861B2
- Status: Granted
- Kind: B2
- Application number: 17/617,083
- Filed: 2020-11-17
- Published: 2023-07-13
- Granted: 2024-02-20
- Earliest claimed: 2020-09-30
- Assignees: Xiamen Tianma Micro-Electronics Co., Ltd.
- Applicants: Xiamen Tianma Micro-Electronics Co., Ltd.
- Inventors: Ankai Ling; Limei Zhou; Menglan Chen; Poping Shen
- Web page: https://patentgrep.com/patent/US11906861B2

## CPC

- G02F 1/136286: {Wiring, e.g. gate line, drain line}
- B60K 35/10: Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
- B60K 35/22: Display screens
- B60K 35/60: Instruments characterised by their location or relative disposition in or on vehicles (arrangements of lighting devices on dashboards B60Q3/10)
- G02F 1/134345: {Subdivided pixels, e.g. for grey scale or redundancy}
- 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 1/136222: {Colour filters incorporated in the active matrix substrate}
- B60K 2360/1523: Matrix displays
- G02F 1/134363: {for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]}
- G02F 1/134372: {for fringe field switching [FFS] where the common electrode is not patterned}
- 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
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES

## Abstract

Provided are a display panel and a display device. The display panel includes multiple data lines and multiple scanning lines. The multiple data lines intersect with the multiple scanning lines to define multiple pixel units arranged in an array, and the data lines are insulated from the scanning lines; and pixel electrodes of pixel units that are among the multiple pixel units and in at least portion of the array include multiple first branch electrodes arranged in parallel; along a direction of the multiple scanning lines, each of the multiple first branch electrodes includes multiple first branch electrode segments connected sequentially; and an included angle between two adjacently connected first branch electrode segments of the multiple first branch electrode segments is less than 180°.

## Claims

### Claim 1

A display panel, comprising:
a plurality of data lines and a plurality of scanning lines,
wherein the plurality of data lines intersects with the plurality of scanning lines to define a plurality of pixel units arranged in an array, and the plurality of data lines are insulated from the plurality of scanning lines; and
wherein pixel electrodes of pixel units in at least part of the array comprise a plurality of first branch electrodes arranged in parallel;
along a direction of the plurality of scanning lines, each of the plurality of first branch electrodes comprises a plurality of first branch electrode segments connected sequentially, and an included angle between two adjacently connected first branch electrode segments of the plurality of first branch electrode segments is less than 180°;
wherein along the direction of the plurality of scanning lines, the display panel comprises a first area, a second area and a third area which are sequentially arranged, and the first area is an area closest to a viewer;
wherein each of pixel electrodes of pixel units in the second area and the third area comprise a plurality of first branch electrodes arranged in parallel;
along the direction of the plurality of scanning lines, each of the plurality of first branch electrodes comprises a plurality of first branch electrode segments sequentially connected; and
an included angle between two adjacently connected first branch electrode segments of the plurality of first branch electrode segments is less than 180°; and
wherein each of pixel electrodes of pixel units in the first area comprises M second branch electrodes sequentially arranged along a direction of the plurality of data lines;
along the direction of the plurality of data lines, second branch electrodes numbered from a first second branch electrode to a j-th second branch electrode are parallel; second branch electrodes numbered from a (j+1)-th second branch electrode to an M-th second branch electrode of the M second branch electrodes are parallel; and an included angle between the j-th second branch electrode and the (j+1)-th second branch electrode is less than 180°,
wherein M is a positive integer greater than 2, and j is a positive integer greater than 1 and less than (M−1).

### Claim 2 (depends on 1)

The display panel of claim 1, wherein each of the plurality of scanning lines is a straight line.

### Claim 3 (depends on 1)

The display panel of claim 1, further comprising: a black matrix;
wherein the black matrix comprises a plurality of openings, a vertical projection of the pixel electrodes onto a plane where the black matrix is located overlaps the plurality of openings of the black matrix, and the plurality of pixel units further comprises a pixel circuit; and
along the direction of the plurality of data lines, the black matrix comprises a first portion and a second portion disposed between two adjacent openings of the plurality of openings; and
along the direction of the plurality of data lines, a width of the first portion is greater than a width of the second portion, and a vertical projection of the pixel circuit onto the plane where the black matrix is located is within the first portion.

### Claim 4 (depends on 3)

The display panel of claim 3, wherein the pixel circuit is disposed at a corner of an area defined by the plurality of data lines intersecting with the plurality of scanning lines.

### Claim 5 (depends on 1)

The display panel of claim 1, wherein each of the pixel electrodes further comprises one terminal electrode,
wherein the one terminal electrode extends along the direction of the plurality of data lines, and the one terminal electrode is disposed between one of the plurality of data lines and the plurality of first branch electrodes comprised in the pixel electrode; and
first terminals of the plurality of first branch electrodes in one pixel unit of the plurality of pixel units are all electrically connected to the one terminal electrode, and second terminals of the plurality of first branch electrodes in the one pixel unit are configured in a floating state; or
the second terminals of the first branch electrodes in one pixel unit of the plurality of pixel units are all electrically connected to the one terminal electrode, and the first terminals of the plurality of first branch electrodes in the one pixel unit are configured in a floating state.

### Claim 6 (depends on 1)

The display panel of claim 1, wherein the pixel electrodes further comprise a first terminal electrode and a second terminal electrode;
wherein the first terminal electrode and the second terminal electrode both extend along the direction of the plurality of data lines, the first terminal electrode is disposed between one of the plurality of data lines and first terminals of the plurality of first branch electrodes comprised in the plurality of pixel units, and the second terminal electrode is disposed between one of the plurality of data lines and second terminals of the plurality of first branch electrodes.

### Claim 7 (depends on 6)

The display panel of claim 6, wherein the first terminal electrode comprises a plurality of first terminal electrode segments, and the second terminal electrode comprises a plurality of second terminal electrode segments,
wherein among N first branch electrodes sequentially arranged along the direction of the plurality of data lines, every three adjacent first branch electrodes are configured as an i-th first branch electrode, an (i+1)-th first branch electrode and an (i+2)-th first branch electrode, a first terminal of the i-th first branch electrode is electrically connected to a first terminal of the (i+1)-th first branch electrode through one of the plurality of first terminal electrode segments, and a second terminal of the (i+1)-th first branch electrode is electrically connected to a second terminal of the (i+2)-th first branch electrode through one of the plurality of second terminal electrode segments,
wherein N is a positive integer greater than 2, i is a positive integer greater than or equal to 1 and less than or equal to (N−2).

### Claim 8 (depends on 6)

The display panel of claim 6, wherein
among N first branch electrodes sequentially arranged along the direction of the plurality of data lines, the first terminals of a first branch electrode to an i-th first branch electrode are electrically connected through the first terminal electrode, and the second terminals of the first branch electrode to an (i−1) first branch electrode are configured in a floating state; and
the second terminals of the i-th first branch electrode to an N-th first branch electrode are electrically connected through the second terminal electrode, and the first terminals of an (i+1)-th first branch electrode to the N-th first branch electrode are configured in a floating state,
wherein N is a positive integer greater than 2, and i is a positive integer greater than 1 and less than (N−1).

### Claim 9 (depends on 5, 6, 7, 8)

The display panel of any one of claims 5 to 8, further comprising:
a black matrix, wherein the black matrix comprises a plurality of openings, and a vertical projection of the pixel electrodes onto a plane where the black matrix is located overlaps the plurality of openings of the black matrix;
along the direction of the plurality of scanning lines, the black matrix comprises notches disposed between two adjacent openings of the plurality of openings; and
wherein a vertical projection of the terminal electrode on the plane where the black matrix is located is within the black matrix.

### Claim 10 (depends on 1)

The display panel of claim 1, wherein the plurality of scanning lines is parallel to the plurality of first branch electrodes.

### Claim 11 (depends on 1)

The display panel of claim 1, wherein the direction of the plurality of scanning lines is a row direction of the array of the plurality of pixel units; and
the first branch electrodes of adjacent pixel units in a same column of the plurality of pixel units are symmetrical with respect to the row direction of the array; or the first branch electrodes of the adjacent pixel units in a same row of the plurality of pixel units are centrosymmetric; or the first branch electrodes of the adjacent pixel units in the same column of the plurality of pixel units are symmetrical with respect to the row direction of the array and the first branch electrodes of the adjacent pixel units in the same row of the plurality of pixel units are centrosymmetric.

### Claim 12 (depends on 1)

The display panel of claim 1, further comprising:
an array substrate and a color filter substrate disposed opposite to each other; and
a liquid crystal layer disposed between the array substrate and the color filter substrate; and
wherein the pixel electrodes are disposed in the array substrate, the array substrate further comprises a common electrode insulated from the pixel electrodes.

### Claim 13 (depends on 12)

The display panel of claim 12, further comprising:
a first polarizer disposed on one side of the array substrate facing away from the color filter substrate, a second polarizer disposed on one side of the color filter substrate facing away from the array substrate, and an optical compensation film disposed between the first polarizer and the array substrate; and
the optical compensation film is configured to reduce a phase delay of the liquid crystal layer with respect to light.

### Claim 14 (depends on 1)

The display panel of claim 1, further comprising:
a black matrix, wherein the black matrix comprises a plurality of openings, a vertical projection of the pixel electrodes onto a plane where the black matrix is located overlaps the plurality of openings of the black matrix, and a vertical projection of a connection portion of two adjacent first branch electrode segments of the plurality of first branch electrode segments in a plane where the black matrix is located is disposed in the black matrix.

### Claim 15

A display device, comprising: a display panel, wherein the display panel comprises:
a plurality of data lines and a plurality of scanning lines,
wherein the plurality of data lines intersect with the plurality of scanning lines to define a plurality of pixel units arranged in an array, and the plurality of data lines are insulated from the plurality of scanning lines; and
wherein pixel electrodes of pixel units in at least part of the array comprise a plurality of first branch electrodes arranged in parallel;
along a direction of the plurality of scanning lines, each of the plurality of first branch electrodes comprises a plurality of first branch electrode segments connected sequentially, and an included angle between two adjacently connected first branch electrode segments of the plurality of first branch electrode segments is less than 180°;
wherein along the direction of the plurality of scanning lines, the display panel comprises a first area, a second area and a third area which are sequentially arranged, and the first area is an area closest to a viewer;
wherein each of pixel electrodes of pixel units in the second area and the third area comprise a plurality of first branch electrodes arranged in parallel;
along the direction of the plurality of scanning lines, each of the plurality of first branch electrodes comprises a plurality of first branch electrode segments sequentially connected; and
an included angle between two adjacently connected first branch electrode segments of the plurality of first branch electrode segments is less than 180°; and
wherein each of pixel electrodes of pixel units in the first area comprises M second branch electrodes sequentially arranged along a direction of the plurality of data lines;
along the direction of the plurality of data lines, second branch electrodes numbered from a first second branch electrode to a j-th second branch electrode are parallel; second branch electrodes numbered from a (j+1)-th second branch electrode to an M-th second branch electrode of the M second branch electrodes are parallel; and an included angle between the j-th second branch electrode and the (j+1)-th second branch electrode is less than 180°,
wherein M is a positive integer greater than 2, and j is a positive integer greater than 1 and less than (M−1).