# US 12,727,340 B2 · Display panel, manufacturing method thereof, and display device

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- Number: US 12,727,340 B2
- Document ID: US12727340B2
- Status: Granted
- Kind: B2
- Application number: 18/696,851
- Filed: 2023-06-20
- Published: 2026-05-21
- Granted: 2026-09-01
- Earliest claimed: 2023-06-20
- Assignees: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd.; Beijing BOE Technology Development Co., Ltd.
- Applicants: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd.; Beijing Boe Technology Development Co., Ltd.
- Inventors: Liang Yao; Ruqin Zhang; Pingchuan Zeng; Zhimeng Shao; Yige Qi
- Web page: https://patentgrep.com/patent/US12727340B2

## CPC

- H10K 59/122: Pixel-defining structures or layers, e.g. banks
- H10K 59/353: {characterised by the geometrical arrangement of the RGB subpixels}
- B60K 35/22: Display screens
- H10K 50/10: OLEDs or polymer light-emitting diodes [PLED]
- H10K 59/12: Active-matrix OLED [AMOLED] displays
- H10K 59/1201: {Manufacture or treatment}
- H10K 59/35: comprising red-green-blue [RGB] subpixels
- H10K 59/352: {the areas of the RGB subpixels being different}
- H10K 59/38: comprising colour filters or colour changing media [CCM]
- H10K 59/873: {Encapsulations}
- H10K 59/879: {comprising refractive means, e.g. lenses}
- H10K 59/8792: {comprising light absorbing layers, e.g. black layers}
- H10K 77/111: {Flexible substrates}
- B60K 2360/1523: Matrix displays
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- 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

A display panel, a manufacturing method thereof, and a display device are provided. The display panel, including a plurality of pixels located on a base substrate, each of the plurality of pixels includes a plurality of sub-pixels, and each of the plurality of sub-pixels has a pixel opening, the plurality of sub-pixels include a first sub-pixel, a second sub-pixel, and a third sub-pixel, among the first sub-pixel, the second sub-pixel, and the third sub-pixel, a size of the pixel opening of the sub-pixel having a maximum size is Dmax and a size of the pixel opening of the sub-pixel having a minimum size is Dmin, and the display panel meets: Dmax/Dmin≤y, y=0.02*Dmin+0.85, where y is a coefficient.

## Claims

### Claim 1

A display panel, comprising a plurality of pixels located on a base substrate, wherein each of the plurality of pixels comprises a plurality of sub-pixels, and each of the plurality of sub-pixels has a pixel opening,
the plurality of sub-pixels comprise a first sub-pixel, a second sub-pixel, and a third sub-pixel,
among the first sub-pixel, the second sub-pixel, and the third sub-pixel, a size of the pixel opening of the sub-pixel having a maximum size is Dmax and a size of the pixel opening of the sub-pixel having a minimum size is Dmin, and the display panel meets:
D
⁢
max
/
D
⁢
min
≤
y
,
y=0.02*Dmin+0.85, where y is a coefficient.

### Claim 2 (depends on 1)

The display panel according to claim 1, wherein the sub-pixel comprises a light-emitting element, and a size of the pixel opening is D,
the display panel further comprises an encapsulation layer, a black matrix, and a color filter layer, wherein the encapsulation layer is configured to encapsulate the light-emitting element, the black matrix and the color filter layer are located on the encapsulation layer, the black matrix has an opening,
an orthographic projection of the pixel opening on the base substrate falls within an orthographic projection of the opening of the black matrix on the base substrate, and a distance between the orthographic projection of the pixel opening on the base substrate and the orthographic projection of the opening of the black matrix on the base substrate in a length direction or a width direction of the display panel is D2,
an offset distance of light emitted from the light-emitting element is D1, and the display panel meets:
α
=
D
⁢
1
-
D
⁢
2
D
,
where α refers to an extent to which the light emitted from the light-emitting element is influenced by the black matrix.

### Claim 3 (depends on 2)

The display panel according to claim 2, wherein the display panel meets:
L
φ1
=
(
1
-
α
)
*
L
φ0
,
where Lφ1 refers to a luminance of the display panel, and Lφ0 refers to a luminance of a structure obtained by removing the black matrix and the color filter layer from the display panel.

### Claim 4 (depends on 2)

The display panel according to claim 2, wherein
D
⁢
1
=
∑
L
⁢
1
Ln
⁢
d
i
⁢
tan
⁢
θ
i
,
where L1 refers to a film layer closest to a light-exiting side of the light-emitting element, Ln refers to the color filter layer, di refers to a thickness of the ith film layer between the film layer L1 and the film layer Ln, θi refers to a refraction angle of light incident on the ith film layer, 1<i<n, and n>i, i is a positive integer greater than 1, and n is a positive integer greater than 2.

### Claim 5 (depends on 2)

The display panel according to claim 2, wherein the size D of the pixel opening of the first sub-pixel is different from the size D of the pixel opening of the second sub-pixel, the offset distance D1 of the first sub-pixel is different from the offset distance D1 of the second sub-pixel, and the distance D2 of the first sub-pixel is different from the distance D2 of the second sub-pixel.

### Claim 6 (depends on 1)

The display panel according to claim 1, wherein compared with a luminance at 0° viewing angle, a luminance at 30° viewing angle has a luminance decay of less than or equal to 26%.

### Claim 7 (depends on 1)

The display panel according to claim 1, wherein compared with initial operation, a color difference of a white screen is less than 2.5 JNCD after the display panel operates for 300 hours.

### Claim 8 (depends on 1)

The display panel according to claim 1, further comprising a pixel defining layer, wherein the pixel defining layer is configured to define the pixel opening and comprises a pixel segmenting portion, and
an orthographic projection of the pixel segmenting portion on the base substrate overlaps an orthographic projection of the pixel opening of the sub-pixel having the maximum size on the base substrate.

### Claim 9 (depends on 8)

The display panel according to claim 8, wherein the pixel opening of the sub-pixel having the maximum size is completely segmented by the pixel segmenting portion, and a distance between the pixel segmenting portion and an edge, in a first direction, of the pixel opening is greater than a distance between the pixel segmenting portion and an edge, in a second direction, of the pixel opening, wherein the first direction is perpendicular to the second direction.

### Claim 10 (depends on 8)

The display panel according to claim 8, wherein the pixel opening of the sub-pixel having the maximum size is partially segmented by the pixel segmenting portion, and the pixel segmenting portion has a first gap from an edge, in a first direction, of the pixel opening and a second gap from an edge, in a second direction, of the pixel opening, wherein the first direction is perpendicular to the second direction, wherein the first gap is larger than the second gap.

### Claim 11 (depends on 2)

The display panel according to claim 2, wherein the first sub-pixel and the third sub-pixel are located on a same side of the second sub-pixel, the pixel opening of the second sub-pixel is larger than the pixel opening of the first sub-pixel and larger than the pixel opening of the third sub-pixel, the display panel further comprises a pixel defining layer,
the pixel defining layer is configured to define the pixel opening and comprises a pixel segmenting portion,
an orthographic projection of the pixel segmenting portion on the base substrate overlaps an orthographic projection of the pixel opening of the sub-pixel having the maximum size on the base substrate,
the pixel opening of the sub-pixel having the maximum size is completely segmented by the pixel segmenting portion, and a distance between the pixel segmenting portion and an edge, in a first direction, of the pixel opening is greater than a distance between the pixel segmenting portion and an edge, in a second direction, of the pixel opening, or
the pixel opening of the sub-pixel having the maximum size is partially segmented by the pixel segmenting portion, and the pixel segmenting portion has a first gap from an edge, in a first direction, of the pixel opening and a second gap from an edge, in a second direction, of the pixel opening,
wherein the first direction is perpendicular to the second direction.

### Claim 12 (depends on 1)

The display panel according to claim 1, wherein at 0° viewing angle, the luminance of the display panel is SS, and at a same viewing angle, the luminance of the display panel in a vertical direction is SS1, while the luminance of the display panel in a horizontal direction is SS2, and SS1/SS is greater than SS2/SS.

### Claim 13 (depends on 1)

The display panel according to claim 1, wherein in the horizontal direction, the luminance at a viewing angle of greater than 35° decays to below 5% of the luminance at 0° viewing angle.

### Claim 14 (depends on 1)

The display panel according to claim 1, wherein the sub-pixel comprises a light-emitting element, and a size of the pixel opening is D,
the display panel further comprises an encapsulation layer, a black matrix, and a color filter layer, wherein the encapsulation layer is configured to encapsulate the light-emitting element, the black matrix and the color filter layer are located on the encapsulation layer, the black matrix has an opening,
an orthographic projection of the pixel opening on the base substrate falls within an orthographic projection of the opening of the black matrix on the base substrate, and a distance between the orthographic projection of the pixel opening on the base substrate and the orthographic projection of the opening of the black matrix on the base substrate is D2, and
values of at least two of the distance D2 of the first sub-pixel, the distance D2 of the second sub-pixel, and the distance D2 of the third sub-pixel are different.

### Claim 15

A vehicle-mounted display panel, comprising a plurality of pixels, wherein each of the plurality of pixels comprises a plurality of sub-pixels, and each of the plurality of sub-pixels has a pixel opening,
the plurality of sub-pixels comprise a first sub-pixel, a second sub-pixel, and a third sub-pixel,
among the first sub-pixel, the second sub-pixel, and the third sub-pixel, a size of the pixel opening of the sub-pixel having a maximum size is Dmax and a size of the pixel opening of the sub-pixel having a minimum size is Dmin, and the display panel meets:
D
⁢
max
/
D
⁢
min
≤
y
,
y
=
0.02
*
D
⁢
min
+
0.85
,
where y is a coefficient.

### Claim 16 (depends on 15)

The vehicle-mounted display panel according to claim 15, wherein the sub-pixel comprises a light-emitting element, and a size of the pixel opening is D,
the vehicle-mounted display panel further comprises an encapsulation layer, a black matrix, and a color filter layer, wherein the encapsulation layer is configured to encapsulate the light-emitting element, the black matrix and the color filter layer are located on the encapsulation layer, the black matrix has an opening,
an orthographic projection of the pixel opening on the base substrate falls within an orthographic projection of the opening of the black matrix on the base substrate, and a distance between the orthographic projection of the pixel opening on the base substrate and the orthographic projection of the opening of the black matrix on the base substrate is D2, and
an offset distance of light emitted from the light-emitting element is D1, and the vehicle-mounted display panel meets:
α
=
D
⁢
1
-
D
⁢
2
D
,
where α refers to an extent to which the light emitted from the light-emitting element is influenced by the black matrix.

### Claim 17 (depends on 16)

The vehicle-mounted display panel according to claim 16, wherein the vehicle-mounted display panel meets:
L
φ1
=
(
1
-
α
)
*
L
φ0
,
where Lφ1 refers to a luminance of the vehicle-mounted display panel, and Lφ0 refers to a luminance of a structure obtained by removing the black matrix and the color filter layer from the vehicle-mounted display panel.

### Claim 18

A manufacturing method of a display panel, comprising forming a plurality of pixels, wherein forming each of the plurality of pixels comprises forming a plurality of sub-pixels, and each of the plurality of sub-pixels has a pixel opening,
the plurality of sub-pixels comprise a first sub-pixel, a second sub-pixel, and a third sub-pixel,
among the first sub-pixel, the second sub-pixel, and the third sub-pixel, a size of the pixel opening of the sub-pixel having a maximum size is Dmax and a size of the pixel opening of the sub-pixel having a minimum size is Dmin, and the display panel meets:
D
⁢
max
/
D
⁢
min
≤
y
,
y
=
0.02
*
D
⁢
min
+
0.85
,
where y is a coefficient.

### Claim 19 (depends on 18)

The manufacturing method of the display panel according to claim 18, wherein the sub-pixel comprises a light-emitting element, and a size of the pixel opening is D,
the manufacturing method of the display panel further comprises forming an encapsulation layer, a black matrix, and a color filter layer, wherein the encapsulation layer is configured to encapsulate the light-emitting element, the black matrix and the color filter layer are located on the encapsulation layer, the black matrix has an opening,
an orthographic projection of the pixel opening on the base substrate falls within an orthographic projection of the opening of the black matrix on the base substrate, and a distance between the orthographic projection of the pixel opening on the base substrate and the orthographic projection of the opening of the black matrix on the base substrate is D2, and
an offset distance of light emitted from the light-emitting element is D1, and the manufacturing method of the display panel meets:
α
=
D
⁢
1
-
D
⁢
2
D
,
where α refers to an extent to which the light emitted from the light-emitting element is influenced by the black matrix.

### Claim 20 (depends on 19)

The manufacturing method of the display panel according to claim 19, wherein the manufacturing method of the display panel meets:
L
φ1
=
(
1
-
α
)
*
L
φ0
,
where Lφ1 refers to a luminance of the display panel obtained by the manufacturing method, and Lφ0 refers to a luminance of a structure obtained by removing the black matrix and the color filter layer in the manufacturing method of the display panel.