# US 12,222,615 B2 · Display panel and display device

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- Number: US 12,222,615 B2
- Document ID: US12222615B2
- Status: Granted
- Kind: B2
- Application number: 18/556,942
- Filed: 2021-10-22
- Published: 2024-06-27
- Granted: 2025-02-11
- Earliest claimed: 2021-04-26
- Assignees: Boe Technology Group Co., Ltd.
- Applicants: BOE Technology Group Co., Ltd.
- Inventors: Zheng Fang; Xue Dong; Pengxia Liang; Jiahui Han
- Web page: https://patentgrep.com/patent/US12222615B2

## CPC

- 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 1/133553: {Reflecting elements (associated to illuminating devices G02F1/133605)}
- G02F 1/1343: Electrodes {(reflective electrodes G02F1/133553)}
- 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)}
- G06F 3/011: {Arrangements for interaction with the human body, e.g. for user immersion in virtual reality (blind teaching G09B21/00)}
- G06T 19/006: {Mixed reality (object pose determination, tracking or camera calibration for mixed reality G06T7/00)}
- 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
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL

## Abstract

A display panel includes a first base substrate, a driving layer, a plurality of pixel electrodes, a common electrode, and a reflection layer. The driving layer is at a side of the first base substrate. The pixel electrodes are at a side of the driving layer away from the first base substrate and are electrically connected with the driving layer. The common electrode is at a side of the pixel electrodes away from the driving layer, is insulated from the pixel electrodes, and includes a plurality of openings for exposing the pixel electrodes. At least a partial region of the common electrode is opaque. The reflective layer is between the first base substrate and the driving layer and includes a plurality of openings for exposing the pixel electrodes.

## Claims

### Claim 1

A display panel, comprising:
a first base substrate;
a driving layer, at a side of the first base substrate;
a plurality of pixel electrodes, at a side of the driving layer away from the first base substrate, wherein each of the pixel electrodes is electrically connected with the driving layer;
a common electrode, at a side of the pixel electrodes away from the driving layer, wherein the common electrode is insulated from the pixel electrodes; the common electrode comprises a plurality of openings for exposing the pixel electrodes, at least a partial region of the common electrode is opaque, and an orthographic projection of a partial region of the common electrode between two adjacent openings which is opaque on the first base substrate and an orthographic projection of either of the pixel electrodes exposed by the two adjacent openings on the first base substrate have an overlapping area;
a reflection layer, between the first base substrate and the driving layer; wherein the reflection layer comprises a plurality of openings for exposing the pixel electrodes, the orthographic projection of the partial region of the common electrode which is opaque on the first base substrate completely covers an orthographic projection of the reflection layer on the first base substrate.

### Claim 2 (depends on 1)

The display panel according to claim 1, wherein the common electrode comprises:
a transparent conductive layer, at a side close to the pixel electrodes;
a light shielding layer, at a side of the transparent conductive layer away from the pixel electrodes;
wherein each of the transparent conductive layer and the light shielding layer comprises openings for exposing the pixel electrodes, an orthographic projection of the light shielding layer on the first base substrate is within a range of an orthographic projection of the transparent conductive layer on the first base substrate.

### Claim 3 (depends on 2)

The display panel according to claim 2, wherein a width of the light shielding layer between two adjacent openings comprised in the light shielding layer is smaller than a width of the transparent conductive layer between two adjacent openings comprised in the transparent conductive layer.

### Claim 4 (depends on 3)

The display panel according to claim 3, wherein the width of the light shielding layer between two adjacent openings comprised in the light shielding layer is 1.8 μm to 2.2 μm.

### Claim 5 (depends on 2)

The display panel according to claim 2, wherein a material of the light shielding layer is metal molybdenum.

### Claim 6 (depends on 4)

The display panel according to claim 4, wherein a width of the reflection layer between two adjacent openings comprised in the reflection layer is 1.8 μm to 2.3 μm.

### Claim 7 (depends on 1)

The display panel according to claim 1, wherein the common electrode is made of a conductive light-shielding material.

### Claim 8 (depends on 7)

The display panel according to claim 7, wherein a width of the common electrode between two adjacent openings comprised in the common electrode is 2.8 μm to 3.4 μm.

### Claim 9 (depends on 7)

The display panel according to claim 7, wherein a material of the common electrode is metal molybdenum.

### Claim 10 (depends on 8)

The display panel according to claim 8, wherein a width of the reflection layer between two adjacent openings comprised in the reflection layer is 2.3 μm to 3.3 μm.

### Claim 11 (depends on 1)

The display panel according to claim 1, wherein the driving layer comprises:
a plurality of scanning signal lines, extending in a first direction and arranged in a second direction, wherein the first direction intersects with the second direction;
a plurality of data signal lines, extending in the second direction and arranged in the first direction; wherein the plurality of scanning signal lines and the plurality of data signal lines define a plurality of sub-pixel units, and the pixel electrodes correspond to the sub-pixel units one by one;
a plurality of transistors, corresponding to the sub-pixel units one by one; wherein control electrodes of the transistors are electrically connected to corresponding scanning signal lines, first electrodes of the transistors are electrically connected to corresponding data signal lines, and second electrodes of the transistors are electrically connected to corresponding pixel electrodes;
the display panel further comprises:
an insulating layer, between each of the pixel electrodes and the common electrode;
a second base substrate, at a side of the common electrode away from the pixel electrodes, wherein a distance between the second base substrate and the common electrode is a set distance;
a color film layer, at a side of the second base substrate facing the common electrode; wherein the color film layer comprises a plurality of color film units corresponding to the sub-pixel units one by one and a black matrix for separating the color film units;
a liquid crystal layer, between the common electrode and the color film layer.

### Claim 12 (depends on 11)

The display panel according to claim 11, wherein;
an orthographic projection of the data signal line on the first base substrate and the orthographic projection of the pixel electrode on the first base substrate do not overlap with each other.

### Claim 13 (depends on 12)

The display panel according to claim 12, wherein the orthographic projection of the data signal line on the first base substrate is within a range of an orthographic projection of the reflection layer on the first base substrate.

### Claim 14 (depends on 1)

A display device, comprising a backlight module, and the display panel according to claim 1 at a light emitting side of the backlight module.

### Claim 15 (depends on 14)

The display device according to claim 14, wherein the display device is a virtual reality display device or an augmented reality display device.

### Claim 16 (depends on 1)

The display panel according to claim 1, wherein all regions of the common electrode are opaque.