# US 12,772,718 B2 · Display panel and display device

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- Number: US 12,772,718 B2
- Document ID: US12772718B2
- Status: Granted
- Kind: B2
- Application number: 19/024,982
- Filed: 2025-01-16
- Published: 2025-05-15
- Granted: 2026-10-20
- Earliest claimed: 2021-01-26
- Assignees: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd.
- Applicants: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd.
- Inventors: Yao Hu
- Web page: https://patentgrep.com/patent/US12772718B2

## CPC

- H10K 59/8792: {comprising light absorbing layers, e.g. black layers}
- G06F 3/0412: {Digitisers structurally integrated in a display}
- G06V 10/141: Control of illumination
- G06V 10/143: Sensing or illuminating at different wavelengths
- G06V 40/1318: {using electro-optical elements or layers, e.g. electroluminescent sensing}
- H10K 59/1315: {comprising structures specially adapted for lowering the resistance}
- H10K 59/40: OLEDs integrated with touch screens
- G06F 3/0421: {by interrupting or reflecting a light beam, e.g. optical touch-screen}
- G09G 3/3225: using an active matrix
- G09G 2300/0426: Layout of electrodes and connections
- G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
- G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor
- G09G 2354/00: Aspects of interface with display user
- H10K 59/131: Interconnections, e.g. wiring lines or terminals
- H10K 59/65: OLEDs integrated with inorganic image sensors
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- 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 panel and a display device are provided, the display panel has a first surface on a surface of the display panel, and includes a driving circuit layer, a light source array, an image sensor array, and a black matrix layer. The light source array includes a plurality of light sources, the image sensor array includes a plurality of image sensors, the black matrix layer includes first light-transmitting openings and second light-transmitting openings. The driving circuit layer includes light-transmitting portions, and each of the first light-transmitting openings is arranged corresponding to at least one of the light-transmitting portions, and a plane size of the first light-transmitting opening in a direction parallel to the surface of the display panel is smaller than a plane size of the light-transmitting portion in the direction parallel to the surface of the display panel.

## Claims

### Claim 1

A display panel, having a first surface on a surface of the display panel, comprising:
a driving circuit layer, comprising a pixel driving circuit;
a light source array, on a side of the driving circuit layer close to the first surface, comprising a plurality of light sources, which are driven by the pixel driving circuit of the driving circuit layer during operation; and
a black matrix layer, on a side of the light source array close to the first surface, comprising a plurality of first light-transmitting openings and a plurality of second light-transmitting openings;
wherein the driving circuit layer comprises a plurality of light-transmitting portions, and each of the plurality of first light-transmitting openings is arranged corresponding to at least one of the plurality of light-transmitting portions for transmitting light, and a plane size of one first light-transmitting opening in a direction parallel to the surface of the display panel is smaller than a plane size of one light-transmitting portion in the direction parallel to the surface of the display panel.

### Claim 2 (depends on 1)

The display panel according to claim 1, wherein the one first light-transmitting opening and the one light-transmitting portion are arranged correspondingly, an orthographic projection of the one first light-transmitting opening in a direction perpendicular to the first surface and an orthographic projection of the one light-transmitting portion in the direction perpendicular to the first surface at least partially overlaps with each other.

### Claim 3 (depends on 1)

The display panel according to claim 1, wherein the pixel driving circuit comprises a plurality of circuit patterns, and orthographic projections of the plurality of light-transmitting portions in the direction perpendicular to the first surface are not overlapped with orthographic projections of the plurality of circuit patterns in the direction perpendicular to the first surface;
the plurality of circuit patterns are respectively arranged in different layers.

### Claim 4 (depends on 1)

The display panel according to claim 1, wherein the driving circuit layer is filled with a light-transmitting material at the plurality of light-transmitting portions.

### Claim 5 (depends on 1)

The display panel according to claim 1, further comprising:
a sensor array, on a side of the driving circuit layer away from the first surface, comprising a plurality of sensors, wherein the plurality of sensors are configured to receive light emitted from the plurality of light sources and reflected to the plurality of sensors by a structure on a side of the first surface away from the plurality of light sources;
wherein in a first direction perpendicular to the surface of the display panel, a distance from a surface of the black matrix layer away from the first surface to the sensor array is H1, a distance from the surface of the black matrix layer away from the first surface to the first surface is H2, and
3
⩾
H
2
/
H
1
⩾
1.

### Claim 6 (depends on 5)

The display panel according to claim 5, wherein the driving circuit layer comprises a semiconductor layer, and a distance from a surface of the semiconductor layer away from the first surface to the surface of the black matrix layer away from the first surface is H3,
in a second direction parallel to the surface of the display panel, a size of a sensing region of a sensor is D1, and a size of a light-transmitting portion is D2, and
D
2
⩾
H
3
*
D
1
/
H
1
.

### Claim 7 (depends on 6)

The display panel according to claim 6, wherein in the second direction parallel to the surface of the display panel, a size of a first light-transmitting opening is Dm, and a distance from a surface of the driving circuit layer away from the first surface to a surface of the black matrix layer close to the first surface is Hm, and
D
m
=
H
m
*
D
1
/
H
1
-
D
2
.

### Claim 8 (depends on 1)

The display panel according to claim 1, further comprising a pixel unit array, wherein the pixel unit array comprises a plurality of pixel units,
each of the plurality of pixel units comprises a plurality of sub-pixels, each of the plurality of sub-pixels comprises a light-emitting device, and
the plurality of light sources comprise light-emitting devices of the plurality of sub-pixels.

### Claim 9 (depends on 8)

The display panel according to claim 8, wherein the plurality of second light-transmitting openings of the black matrix layer are a plurality of sub-pixel openings, the plurality of sub-pixel openings are arranged in one-to-one correspondence with the plurality of sub-pixels, so as to respectively transmit light emitted by the plurality of sub-pixels.

### Claim 10 (depends on 9)

The display panel according to claim 9, wherein the plurality of first light-transmitting openings are arranged in one-to-one correspondence with the plurality of pixel units, or
each of the plurality of first light-transmitting openings is provided corresponding to a plurality of pixel units.

### Claim 11 (depends on 10)

The display panel according to claim 10, wherein in a first light-transmitting opening and a pixel unit that are arranged correspondingly, the first light-transmitting opening and light-emitting layers of light-emitting devices of sub-pixels in the pixel unit do not overlap in a direction perpendicular to the first surface.

### Claim 12 (depends on 11)

The display panel according to claim 11, wherein in the first light-transmitting opening and the pixel unit that are arranged correspondingly, a line connecting centers of light-emitting layers of two adjacent sub-pixels in the pixel unit and a center of the first light-transmitting opening do not overlap in the direction perpendicular to the first surface.

### Claim 13 (depends on 8)

The display panel according to claim 8, wherein the plurality of sub-pixels comprised in each pixel unit comprise a red sub-pixel, a green sub-pixel, and a blue sub-pixel,
the red sub-pixel comprises a first light-emitting device, and the first light-emitting device comprises a first electrode, a second electrode, and a red light-emitting layer between the first electrode and the second electrode,
the green sub-pixel comprises a second light-emitting device, and the second light-emitting device comprises a third electrode, a fourth electrode, and a green light-emitting layer between the third electrode and the fourth electrode,
the blue sub-pixel comprises a third light-emitting device, and the third light-emitting device comprises a fifth electrode, a sixth electrode, and a blue light-emitting layer between the fifth electrode and the sixth electrode,
wherein in a first light-transmitting opening and a pixel unit that are arranged correspondingly, a distance from the first light-transmitting opening to the red light-emitting layer is smaller than a distance from the first light-transmitting opening to the green light-emitting layer and a distance from the first light-transmitting opening to the blue light-emitting layer.

### Claim 14 (depends on 13)

The display panel according to claim 13, further comprising a controller, wherein the controller is configured to light up red sub-pixels in the plurality of pixel units to serve as photosensitive light sources of the plurality of sensors.

### Claim 15 (depends on 13)

The display panel according to claim 13, wherein in a first direction perpendicular to the surface of the display panel, a distance from a surface of the black matrix layer away from the first surface to the sensor array is H1, the driving circuit layer comprises a semiconductor layer, and a distance from a surface of the semiconductor layer away from the first surface to the surface of the black matrix layer away from the first surface is H3, a distance from the surface of the black matrix layer away from the first surface to a surface of the green light-emitting layer or the blue light-emitting layer close to the first surface is H4,
in a second direction parallel to the surface of the display panel, a size of a sensing region of a sensor is D1, and a distance from the light-transmitting portion to the green light-emitting layer or the blue light-emitting layer is L, and
L
⩾
(
H
3
-
H
4
)
*
D
1
/
(
2
*
H
1
)
.

### Claim 16 (depends on 15)

The display panel according to claim 15, wherein
L
⩽
(
2
⁢
H
3
-
H
4
)
*
D
1
/
H
1
.

### Claim 17 (depends on 1)

The display panel according to claim 1, further comprising a touch control layer on a side of the black matrix layer away from or close to the light source array,
wherein in a first direction perpendicular to the surface of the display panel, portions of the touch control layer overlapping with the plurality of first light-transmitting openings are light-transmissive; or
the touch control layer comprises an opaque material, an orthographic projection of the opaque material in a direction perpendicular to the first surface does not overlap with orthographic projections of the plurality of first light-transmitting openings and the plurality of light-transmitting portions in the direction perpendicular to the first surface.

### Claim 18 (depends on 1)

The display panel according to claim 1, wherein the plurality of first light-transmitting openings are arranged in an array, and in a same direction, a distance between any two adjacent first light-transmitting openings is identical;
a plane shape of each of the plurality of first light-transmitting openings is a circle or a convex polygon.

### Claim 19 (depends on 1)

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

### Claim 20

A display panel, having a first surface on a surface of the display panel, comprising:
a driving circuit layer, comprising a pixel driving circuit;
a light source array, on a side of the driving circuit layer close to the first surface, comprising a plurality of light sources, which are driven by the pixel driving circuit of the driving circuit layer during operation; and
a black matrix layer, on a side of the light source array close to the first surface, comprising a plurality of first light-transmitting openings and a plurality of second light-transmitting openings;
wherein the driving circuit layer comprises a plurality of light-transmitting portions, and each of the plurality of first light-transmitting openings is arranged corresponding to at least one of the plurality of light-transmitting portions for transmitting light, and a plane size of one first light-transmitting opening in a direction parallel to the surface of the display panel is smaller than a plane size of one light-transmitting portion in the direction parallel to the surface of the display panel;
the display panel further comprises a touch control layer on a side of the black matrix layer away from or close to the light source array, the touch control layer comprises a metal grid, an orthographic projection of the metal grid in a direction perpendicular to the first surface is not overlapped with orthographic projections of the plurality of first light-transmitting openings and the plurality of light-transmitting portions in the direction perpendicular to the first surface, and the metal grid is provided between adjacent light sources.