Display panel and manufacturing method therefor, and display apparatus

Abstract

A display panel and a manufacturing method therefor, and a display apparatus. The display panel comprises a plurality of pixels located on a base substrate, wherein each pixel comprise a plurality of sub-pixels, and each sub-pixel is provided with a pixel opening. The plurality of sub-pixels comprise a first sub-pixel, a second sub-pixel and a third sub-pixel, and among the first sub-pixel, the second sub-pixel and the third sub-pixel, the size of a pixel opening of the sub-pixel with the largest size is Dmax, and the size of a pixel opening of the sub-pixel with the minimum size is Dmin; and the display panel satisfies: Dmax / Dmin≤y, and y=0.02*Dmin+0.85, wherein y is a coefficient. In the display panel, size proportion matching is performed on sizes of different sub-pixels, thereby ameliorating the angle-of-view optical characteristics and chromaticity lifetime of the display panel.

Description

Display panel, manufacturing method thereof, and display device Technical Field

[0001] Embodiments of the present disclosure relate to a display panel, a manufacturing method thereof, and a display device. Background Art

[0002] Active-matrix organic light-emitting diode (AMOLED) display devices have the advantages of self-luminescence (no backlight required), simple structure, wide viewing angle, low power consumption, and flexible display. They are one of the most promising display technologies currently.

[0003] With the recent innovation and development of large-scale and rollable OLED display panels, the demand for low power consumption in the display industry has also continued to increase. Increasing the transmittance of the upper components above the light-emitting layer can effectively reduce power consumption. Using a color filter on encapsulation (COE) solution instead of a polarizer (POL) structure is an effective way to improve transmittance, while also achieving thinner display panel modules and promoting the further development of rollable screens.

[0004] Summary of the Invention

[0005] Embodiments of the present disclosure provide a display panel, a manufacturing method thereof, and a display device.

[0006] An embodiment of the present disclosure provides a display panel, comprising a plurality of pixels located on a base substrate, wherein the pixels include a plurality of sub-pixels, each of the sub-pixels having a pixel opening, and 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, the pixel opening of the largest sub-pixel has a size Dmax, and the pixel opening of the smallest sub-pixel has a size Dmin. The display panel satisfies the following conditions: Dmax / Dmin≤y, y=0.02*Dmin+0.85, where y is a coefficient.

[0007] A display panel provided according to an embodiment of the present disclosure, wherein the sub-pixel includes a light-emitting element, the size of the pixel aperture is D, the display panel further includes a packaging layer, a black matrix, and a color film layer. Among them, the packaging layer is configured to package the light-emitting element, the black matrix and the color film layer are located on the packaging layer, the black matrix has an aperture, the orthographic projection of the pixel aperture on the substrate falls within the orthographic projection of the aperture of the black matrix on the substrate, and the distance in the length direction or width direction of the display panel between the orthographic projection of the pixel aperture on the substrate and the orthographic projection of the aperture of the black matrix on the substrate is D2, and the offset distance of the light emitted by the light-emitting element is D1, and the display panel satisfies: Where α represents the degree to which the light emitted by the light-emitting element is affected by the black matrix.

[0008] A display panel provided according to an embodiment of the present disclosure, the display panel satisfies: Where is the brightness of the display panel, is the brightness of the structure obtained by removing the black matrix and the color film layer from the display panel.

[0009] A display panel provided according to an embodiment of the present disclosure, L1 is the film layer closest to the light-emitting side of the light-emitting element, Ln is the color film layer, d i is the thickness of the i-th film layer located between the film layer L1 and the film layer Ln, θ i is the refraction angle of the light incident on the i-th film layer, 1 < i < n, n > i, i is a positive integer greater than 1, and n is a positive integer greater than 2.

[0010] A display panel provided according to an embodiment of the present disclosure, the size of the pixel aperture is the length, diameter, or area of the pixel aperture.

[0011] A display panel provided according to an embodiment of the present disclosure, the shape of the pixel aperture includes a rectangle, a rounded rectangle, or a circle.

[0012] A display panel provided according to an embodiment of the present disclosure, the first sub-pixel, the second sub-pixel, and the third sub-pixel are configured to emit light of different colors.

[0013] A display panel provided according to an embodiment of the present disclosure, the size D of the pixel aperture of the first sub-pixel is different from the size D of the pixel aperture 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.

[0014] According to the display panel provided by the embodiment of the present disclosure, the brightness attenuation at a viewing angle of 30 degrees is less than or equal to 26% compared with the brightness at a viewing angle of 0 degrees.

[0015] According to the display panel provided by the embodiment of the present disclosure, compared with the initial operation, after the display panel has been operated for 300 hours, the color difference of the white screen is less than 2.5JNCD.

[0016] According to the display panel provided by an embodiment of the present disclosure, the display panel also includes a pixel defining layer, which is configured to define the pixel opening. The pixel defining layer includes a pixel dividing portion, and the orthographic projection of the pixel dividing portion on the base substrate overlaps with the orthographic projection of the pixel opening of the largest sub-pixel on the base substrate.

[0017] According to the display panel provided by an embodiment of the present disclosure, the pixel opening of the largest sub-pixel is completely divided by the pixel dividing portion, and the distance between the pixel dividing portion and the edge of the pixel opening in the first direction is greater than the distance between the pixel dividing portion and the edge of the pixel opening in the second direction, wherein the first direction is perpendicular to the second direction.

[0018] According to the display panel provided by an embodiment of the present disclosure, the pixel opening of the largest sub-pixel is partially divided by the pixel dividing portion, the pixel dividing portion has a first interval between the edge of the pixel opening in the first direction, and has a second interval between the edge of the pixel opening in the second direction, wherein the first direction is perpendicular to the second direction.

[0019] According to the display panel provided by an embodiment of the present disclosure, the first interval is greater than the second interval.

[0020] According to the display panel provided by the embodiment of the present disclosure, the first interval is 5 to 10 μm, and the second interval is 3 to 5 μm.

[0021] According to the display panel provided by the embodiment of the present disclosure, the pixel opening of the largest sub-pixel is rectangular.

[0022] According to the display panel provided by the embodiment of the present disclosure, the size of the long side of the pixel opening of the largest sub-pixel is greater than 30 μm.

[0023] According to the display panel provided by the embodiment of the present disclosure, the light-emitting element includes a first light-emitting element, a second light-emitting element and a third light-emitting element, the first light-emitting element includes a first light-emitting layer and a first color deviation adjustment layer, the second light-emitting element includes a second light-emitting layer and a second color deviation adjustment layer, and the third light-emitting element includes a third light-emitting layer.

[0024] According to the display panel provided by the embodiment of the present disclosure, the thickness of the first color deviation adjustment layer is 50 to 100 nm, the thickness of the second color deviation adjustment layer is 25 to 40 nm, and the third light-emitting element further includes a third color deviation adjustment layer, and the thickness of the third color deviation adjustment layer is greater than 0 and less than or equal to 15 nm.

[0025] According to a display panel provided by an embodiment of the present disclosure, the first sub-pixel and the third sub-pixel are located on the 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 also includes a pixel defining layer, the pixel defining layer is configured to define the pixel opening, the pixel defining layer includes a pixel dividing portion, the positive projection of the pixel dividing portion on the substrate overlaps with the positive projection of the pixel opening of the sub-pixel with the largest size on the substrate, the pixel opening of the sub-pixel with the largest size is completely divided by the pixel dividing portion, the distance between the pixel dividing portion and the edge of the pixel opening in the first direction is greater than the distance between the pixel dividing portion and the edge of the pixel opening in the second direction, or the pixel opening of the sub-pixel with the largest size is partially divided by the pixel dividing portion, the pixel dividing portion has a first interval between the edge of the pixel opening in the first direction, and has a second interval between the edge of the pixel opening in the second direction, wherein the first direction is perpendicular to the second direction.

[0026] According to the display panel provided by the embodiment of the present disclosure, the size of the openings of the black matrix is ​​greater than 0 and less than or equal to 2 μm.

[0027] According to the display panel provided by the embodiment of the present disclosure, at a viewing angle of 0°, the brightness of the display panel is SS. At the same viewing angle, the brightness of the display panel in the vertical direction is SS1 and the brightness in the horizontal direction is SS2, and SS1 / SS is greater than SS2 / SS.

[0028] According to the display panel provided by the embodiment of the present disclosure, in the horizontal direction, the brightness at a viewing angle greater than 35 degrees is attenuated to less than 5% of the brightness at a viewing angle of 0 degrees.

[0029] According to the display panel provided by the embodiment of the present disclosure, the sub-pixel includes a light-emitting element, the size of the pixel opening is D, and the display panel also includes 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, the orthographic projection of the pixel opening on the base substrate falls within the orthographic projection of the opening of the black matrix on the base substrate, and the 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 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 have different values.

[0030] An embodiment of the present disclosure also provides a vehicle-mounted display panel, comprising a plurality of pixels, wherein the pixels include a plurality of sub-pixels, each sub-pixel having a pixel opening, and 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, the size of the pixel opening of the largest sub-pixel is Dmax, and the size of the pixel opening of the smallest sub-pixel is Dmin. The display panel satisfies: Dmax / Dmin≤y, y=0.02*Dmin+0.85, wherein y is a coefficient.

[0031] According to an embodiment of the present disclosure, a vehicle-mounted display panel is provided, wherein the sub-pixel includes a light-emitting element, the size of the pixel opening is D, and the vehicle-mounted display panel further includes 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, the orthographic projection of the pixel opening on the base substrate falls within the orthographic projection of the black matrix opening on the base substrate, and the distance between the orthographic projection of the pixel opening on the base substrate and the orthographic projection of the black matrix opening on the base substrate is D2, and the offset distance of the light emitted by the light-emitting element is D1. The vehicle-mounted display panel satisfies the following conditions: Here, α represents the degree to which the light emitted by the light-emitting element is affected by the black matrix.

[0032] According to an embodiment of the present disclosure, a vehicle-mounted display panel is provided, which satisfies: in, is the brightness of the vehicle-mounted display panel, The brightness of the structure obtained by removing the black matrix and the color filter layer from the vehicle-mounted display panel.

[0033] According to the embodiment of the present disclosure, the vehicle-mounted display panel provided, L1 is the film layer closest to the light-emitting side of the light-emitting element, Ln is the color film layer, d i is the thickness of the i-th film layer located between the film layer L1 and the film layer Ln, θ i is the refraction angle of the light incident on the i-th film layer, 1 < i < n, n > i, i is a positive integer greater than 1, and n is a positive integer greater than 2.

[0034] According to the vehicle-mounted display panel provided by an embodiment of the present disclosure, the size of the pixel aperture is the length, diameter or area of the pixel aperture.

[0035] According to the vehicle-mounted display panel provided by an embodiment of the present disclosure, the shape of the pixel aperture includes a rectangle, a rounded rectangle, or a circle.

[0036] According to the vehicle-mounted display panel provided by an embodiment of the present disclosure, the first sub-pixel, the second sub-pixel, and the third sub-pixel are configured to emit light of different colors.

[0037] According to the vehicle-mounted display panel provided by an embodiment of the present disclosure, compared with the brightness at a 0-degree viewing angle, the brightness attenuation at a 30-degree viewing angle is less than or equal to 26%.

[0038] According to the vehicle-mounted display panel provided by an embodiment of the present disclosure, compared with when it starts running, after the vehicle-mounted display panel runs for 300 hours, the color difference of the white screen is less than 2.5 JNCD.

[0039] According to the vehicle-mounted display panel provided by an embodiment of the present disclosure, the vehicle-mounted display panel further includes a pixel defining layer, wherein the pixel defining layer is configured to define the pixel aperture, the pixel defining layer includes a pixel dividing portion, and the orthographic projection of the pixel dividing portion on the substrate overlaps with the orthographic projection of the pixel aperture of the largest-sized sub-pixel on the substrate.

[0040] According to the vehicle-mounted display panel provided by an embodiment of the present disclosure, the pixel aperture of the largest-sized sub-pixel is completely divided by the pixel dividing portion, and the distance between the pixel dividing portion and the edge of the pixel aperture in the first direction is greater than the distance between the pixel dividing portion and the edge of the pixel aperture in the second direction, wherein the first direction is perpendicular to the second direction.

[0041] According to the vehicle-mounted display panel provided by an embodiment of the present disclosure, the pixel aperture of the largest-sized sub-pixel is partially divided by the pixel dividing portion, the pixel dividing portion has a first interval with the edge of the pixel aperture in the first direction, and has a second interval with the edge of the pixel aperture in the second direction, wherein the first direction is perpendicular to the second direction.

[0042] According to the vehicle display panel provided by an embodiment of the present disclosure, the first interval is greater than the second interval.

[0043] According to the vehicle display panel provided by the embodiment of the present disclosure, the first interval is 5 to 10 μm, and the second interval is 3 to 5 μm.

[0044] According to the vehicle-mounted display panel provided by an embodiment of the present disclosure, the pixel opening of the largest sub-pixel is rectangular.

[0045] According to the vehicle display panel provided by the embodiment of the present disclosure, the size of the long side of the pixel opening of the largest sub-pixel is greater than 30 μm.

[0046] According to the vehicle display panel provided by the embodiment of the present disclosure, the size of the openings of the black matrix is ​​greater than 0 and less than or equal to 2 μm.

[0047] According to the vehicle-mounted display panel provided by the embodiment of the present disclosure, when the viewing angle values ​​are the same, the brightness attenuation in the vertical direction is smaller than the brightness attenuation in the horizontal direction.

[0048] According to the in-vehicle display panel provided by the embodiment of the present disclosure, in the horizontal direction, the brightness at a viewing angle greater than 35 degrees is attenuated to less than 5% of the brightness at a viewing angle of 0 degrees.

[0049] According to an embodiment of the present disclosure, a vehicle-mounted display panel is provided, wherein the sub-pixel includes a light-emitting element, the size of the pixel opening is D, and the vehicle-mounted display panel also includes 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, the orthographic projection of the pixel opening on the base substrate falls within the orthographic projection of the opening of the black matrix on the base substrate, and the 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 at least two of the values ​​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.

[0050] An embodiment of the present disclosure further provides a display device, comprising any of the above-mentioned display panels or any of the above-mentioned vehicle-mounted display panels.

[0051] Embodiments of the present disclosure also provide a method for manufacturing a display panel, including forming a plurality of pixels. Among them, forming the pixels includes forming a plurality of sub-pixels. The sub-pixels have pixel apertures. 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, the size of the pixel aperture of the sub-pixel with the largest size is Dmax, and the size of the pixel aperture of the sub-pixel with the smallest size is Dmin. The display panel satisfies: Dmax / Dmin ≤ y, where y = 0.02*Dmin + 0.85, and y is a coefficient.

[0052] According to the method for manufacturing a display panel provided by an embodiment of the present disclosure, the sub-pixel includes a light-emitting element, and the size of the pixel aperture is D. The method for manufacturing the display panel further includes a packaging layer, a black matrix, and a color film layer. Among them, the packaging layer is configured to package the light-emitting element, and the black matrix and the color film layer are located on the packaging layer. The black matrix has an opening, and the orthographic projection of the pixel aperture on the substrate falls within the orthographic projection of the opening of the black matrix on the substrate. The distance between the orthographic projection of the pixel aperture on the substrate and the orthographic projection of the opening of the black matrix on the substrate is D2, and the offset distance of the light emitted by the light-emitting element is D1. The method for manufacturing the display panel satisfies: where α represents the degree to which the light emitted by the light-emitting element is affected by the black matrix.

[0053] According to the method for manufacturing a display panel provided by an embodiment of the present disclosure, the method for manufacturing the display panel satisfies: where is the brightness of the method for manufacturing the display panel, is the brightness of the structure obtained by removing the black matrix and the color film layer from the method for manufacturing the display panel.

[0054] According to the method for manufacturing a display panel provided by an embodiment of the present disclosure, L1 is the film layer closest to the light-emitting side of the light-emitting element, Ln is the color film layer, d i is the thickness of the i-th film layer located between the film layer L1 and the film layer Ln, θ i is the refraction angle of the light incident on the i-th film layer, 1 < i < n, n > i, i is a positive integer greater than 1, and n is a positive integer greater than 2.

[0055] According to the method for manufacturing a display panel provided by an embodiment of the present disclosure, the size of the pixel aperture is the length, diameter, or area of the pixel aperture.

[0056] According to the method for manufacturing a display panel provided by an embodiment of the present disclosure, the shape of the pixel opening includes a rectangle, a rounded rectangle, or a circle.

[0057] According to the method for manufacturing a display panel provided by an embodiment of the present disclosure, the first sub-pixel, the second sub-pixel, and the third sub-pixel are configured to emit light of different colors.

[0058] According to the manufacturing method of the display panel provided by the embodiment of the present disclosure, the brightness attenuation at a viewing angle of 30 degrees is less than or equal to 26% compared with the brightness at a viewing angle of 0 degrees.

[0059] According to the method for manufacturing a display panel provided by an embodiment of the present disclosure, compared with the initial operation, after the method for manufacturing a display panel runs for 300 hours, the color difference of the white screen is less than 2.5 JNCD.

[0060] According to the manufacturing method of the display panel provided by an embodiment of the present disclosure, the manufacturing method also includes forming a pixel defining layer, wherein the pixel defining layer is configured to define the pixel opening, and the pixel defining layer includes a pixel dividing portion, and the orthographic projection of the pixel dividing portion on the base substrate overlaps with the orthographic projection of the pixel opening of the largest sub-pixel on the base substrate.

[0061] According to the manufacturing method of the display panel provided by the embodiment of the present disclosure, the pixel opening of the largest sub-pixel is completely divided by the pixel dividing portion, and the distance between the pixel dividing portion and the edge of the pixel opening in the first direction is greater than the distance between the pixel dividing portion and the edge of the pixel opening in the second direction, wherein the first direction is perpendicular to the second direction.

[0062] According to the manufacturing method of the display panel provided by an embodiment of the present disclosure, the pixel opening of the largest sub-pixel is partially divided by the pixel dividing part, and the pixel dividing part has a first interval between the edge of the pixel opening in the first direction and a second interval between the edge of the pixel opening in the second direction, wherein the first direction is perpendicular to the second direction.

[0063] According to the method for manufacturing a display panel provided by an embodiment of the present disclosure, the first interval is greater than the second interval.

[0064] According to the method for manufacturing a display panel provided by an embodiment of the present disclosure, the first interval is 5 to 10 μm, and the second interval is 3 to 5 μm.

[0065] According to the method for manufacturing a display panel provided by an embodiment of the present disclosure, the pixel opening of the largest sub-pixel is rectangular.

[0066] According to the method for manufacturing a display panel provided by an embodiment of the present disclosure, the size of the long side of the pixel opening of the largest sub-pixel is greater than 30 μm.

[0067] According to the method for manufacturing a display panel provided by an embodiment of the present disclosure, the size of the openings of the black matrix is ​​greater than 0 and less than or equal to 2 μm.

[0068] According to the method for manufacturing a display panel provided by an embodiment of the present disclosure, when the viewing angle values ​​are the same, the brightness attenuation in the vertical direction is smaller than the brightness attenuation in the horizontal direction.

[0069] According to the manufacturing method of the display panel provided by the embodiment of the present disclosure, in the horizontal direction, the brightness at a viewing angle greater than 35 degrees is attenuated to less than 5% of the brightness at a viewing angle of 0 degrees.

[0070] According to the manufacturing method of the display panel provided by the embodiment of the present disclosure, the sub-pixel includes a light-emitting element, the size of the pixel opening is D, and the manufacturing method of the display panel also includes 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, the orthographic projection of the pixel opening on the base substrate falls within the orthographic projection of the opening of the black matrix on the base substrate, and the 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 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 have different values. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, rather than limiting the present disclosure.

[0072] FIG. 1A is a schematic diagram illustrating a viewing angle of a display panel.

[0073] FIG1B is a CIE locus diagram at a W viewing angle.

[0074] FIG1C is a comparison diagram of viewing angle characteristics of OLED display panels with a POL structure and an integrated COE structure.

[0075] FIG. 2A is a schematic diagram of a sub-pixel of a display panel.

[0076] FIG. 2B is a schematic diagram of another sub-pixel of a display panel.

[0077] FIG. 2C is a schematic diagram of another sub-pixel of a display panel.

[0078] FIG3 is a schematic diagram showing the principle of the viewing angle brightness attenuation affecting the display panel with an integrated COE structure (a cross-sectional view of the display panel).

[0079] FIG4 is a CIE shift diagram of a white screen of an OLED display panel after 300 hours of use.

[0080] FIG5 is a schematic diagram of a display panel provided by an embodiment of the present disclosure.

[0081] FIG. 6A is a viewing angle brightness attenuation curve of the display panel shown in FIG. 5 .

[0082] FIG. 6B is a viewing angle color deviation curve of the display panel shown in FIG. 5 .

[0083] FIG. 6C is a CIE locus of the display panel shown in FIG. 5 at a W viewing angle.

[0084] FIG. 6D shows the CIE offset of the white screen of the display panel shown in FIG. 5 .

[0085] FIG7 is a schematic diagram of a display panel provided by an embodiment of the present disclosure.

[0086] FIG. 8A is a viewing angle brightness attenuation curve of the display panel shown in FIG. 7 .

[0087] FIG. 8B is a viewing angle color deviation curve of the display panel shown in FIG. 7 .

[0088] FIG. 8C is a CIE locus of the display panel shown in FIG. 7 at a W viewing angle.

[0089] FIG. 8D shows the CIE offset of the white screen of the display panel shown in FIG. 7 .

[0090] FIG9 is a schematic diagram of a display panel provided by an embodiment of the present disclosure.

[0091] FIG. 10A is a viewing angle brightness attenuation curve of the display panel shown in FIG. 9 .

[0092] FIG. 10B is a viewing angle color deviation curve of the display panel shown in FIG. 9 .

[0093] FIG. 10C is a CIE locus of the W viewing angle of the display panel shown in FIG. 9 .

[0094] FIG. 10D shows the CIE offset of the white screen of the display panel shown in FIG. 9 .

[0095] FIG11 is a schematic diagram of a display panel provided by an embodiment of the present disclosure.

[0096] FIG. 12A is a viewing angle brightness attenuation curve of the display panel shown in FIG. 11 .

[0097] FIG. 12B is a viewing angle color deviation curve of the display panel shown in FIG. 11 .

[0098] FIG. 12C is a CIE locus of the W viewing angle of the display panel shown in FIG. 11 .

[0099] FIG. 12D shows the CIE offset of the white screen of the display panel shown in FIG. 11 .

[0100] FIG13 is a top view of the pixel structure of the display panel provided by an embodiment of the present disclosure.

[0101] FIG14 is a top view of a pixel structure of a display panel provided in another embodiment of the present disclosure.

[0102] FIG15 is a cross-sectional view and a light path diagram of the largest sub-pixel of the display panel provided by an embodiment of the present disclosure.

[0103] FIG16 is a cross-sectional view and a light path diagram of a sub-pixel with the largest size in another display panel provided by an embodiment of the present disclosure.

[0104] FIG17 is a schematic diagram of white light attenuation in the horizontal direction of the display panel provided by FIG13 and FIG15.

[0105] FIG18 is a schematic diagram of white light attenuation in the vertical direction of the display panel provided in FIG13 and FIG15 . DETAILED DESCRIPTION

[0106] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0107] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0108] The inventors discovered that the introduction of a COE structure into an OLED display panel significantly degrades viewing angle characteristics. Figure 1A is a schematic diagram of the viewing angle of a display panel. Figure 1B is a CIE locus diagram of the W viewing angle. Figure 1C compares the viewing angle characteristics of OLED display panels with a POL structure and an integrated COE structure.

[0109] As shown in FIG1A , the display panel 66 has a light emitting surface SE and a normal line Ln. The normal line Ln is perpendicular to the light emitting surface SE. The angle between the line of sight VW and the normal line Ln is the viewing angle θa.

[0110] As shown in Figure 1B, the three dotted circles, from the inside out, represent the trajectories for a color difference of 3JNCD, a color difference of 4.5JNCD, and a color difference of 6JNCD, respectively. As shown in Figure 1B, at wider viewing angles, the POL structure display panel exhibits less color difference than the integrated COE structure display panel. As shown in Figure 1B, the smaller the viewing angle, the closer the rectangular points are to the dotted circle for a color difference of 3JNCD. As shown in Figure 1B, the wider the viewing angle, the greater the color difference of the display panel.

[0111] JNCD (Just Noticeable Color Difference) is used to reflect the degree of color deviation. The smaller the value, the smaller the color deviation and the more accurate the color display. For example, JNCD refers to the difference between two color coordinates.

[0112] As shown in Figure 1C, at the same viewing angle, the brightness attenuation of the display panel with a POL structure is smaller than that of the display panel with an integrated COE structure. As shown in Figure 1C, at the same viewing angle, the brightness attenuation of the display panel with a POL structure is smaller than that of the display panel with an integrated COE structure.

[0113] As shown in FIG1B and FIG1C , the OLED display panel with an integrated COE structure suffers from worse color deviation and viewing angle brightness attenuation. This is mainly due to the absorption and shielding effect of the black matrix (BM) on light, and the black matrix has different shielding degrees for sub-pixels of different colors.

[0114] The embodiments of the present disclosure provide a display panel with an integrated COE structure, a manufacturing method thereof, and a display device, which can effectively improve the problem of deterioration of the viewing angle characteristics of the display panel caused by the introduction of the COE structure, and obtain a display panel with excellent viewing angle optical characteristics.

[0115] Figure 2A is a schematic diagram of a sub-pixel of a display panel. Figure 2B is a schematic diagram of a sub-pixel of another display panel. Figure 2C is a schematic diagram of a sub-pixel of another display panel.

[0116] As shown in Figures 2A to 2C, the display panel includes a pixel PX. Figure 3 shows one pixel PX among the multiple pixels in the display panel. The pixel PX includes a plurality of sub-pixels 100. The plurality of sub-pixels 100 include a first sub-pixel 101, a second sub-pixel 102, and a third sub-pixel 103.

[0117] As shown in FIG. 2A and FIG. 2B , the sub-pixel 100 includes a light emitting element EM. The light emitting element EM includes a first electrode E1 , a second electrode E2 , and a light emitting functional layer FL located between the first electrode E1 and the second electrode E2 .

[0118] 2A to 2C illustrate a first light emitting element EM1 , a second light emitting element EM2 , and a third light emitting element EM3 .

[0119] As shown in Figures 2A to 2C, the light emitting functional layer FL includes a light emitting layer EML. The light emitting layer EML includes a first light emitting layer EML1, a second light emitting layer EML2, and a third light emitting layer EML3. The first light emitting layer EML1, the second light emitting layer EML2, and the third light emitting layer EML3 are non-common layers NCL.

[0120] For example, as shown in FIG2A and FIG2B , the thickness of the first light-emitting layer EML1 ranges from 35 to 55 nm, the thickness of the second light-emitting layer EML2 ranges from 25 to 40 nm, and the thickness of the third light-emitting layer EML3 ranges from 15 to 35 nm.

[0121] As shown in FIG2C , the non-public layer NCL includes a first non-public layer NCL1, a second non-public layer NCL2, and a third non-public layer NCL3. The first non-public layer NCL1 shown in FIG2C may include a first light-emitting layer EML1, the second non-public layer NCL2 may include a second light-emitting layer EML2, and the third non-public layer NCL3 may include a third light-emitting layer EML3.

[0122] As shown in Figures 2A to 2C, sub-pixel 100 further includes color adjustment layers AL. These layers AL include a first color adjustment layer AL1, a second color adjustment layer AL2, and a third color adjustment layer AL3. These layers AL1, AL2, and AL3 are non-common layers NCL. The color adjustment layers AL are provided to reduce visual color shift.

[0123] For example, the color coordinates and color shift can be optimized by adjusting the thickness of the color adjustment layer AL. For example, the color adjustment layer AL can be made of an organic material, such as an organic small molecule material. The color adjustment layer AL can be made of common materials and is not limited here.

[0124] For example, the thickness of the first color deviation adjustment layer AL1 is The thickness of the second color shift adjustment layer AL2 is The thickness of the third color shift adjustment layer AL3 is

[0125] As shown in FIG. 2A and FIG. 2B , the thickness of the first color deviation adjustment layer AL1 ranges from 50 to 100 nm, the thickness of the second color deviation adjustment layer AL2 ranges from 25 to 40 nm, and the thickness of the third color deviation adjustment layer AL3 ranges from 0 to 15 nm.

[0126] As shown in FIG2A to FIG2C , in the light-emitting element EM, the light-emitting functional layer FL further includes a hole injection layer HIL, a hole transport layer HTL, a hole blocking layer HBL, an electron transport layer ETL, and an electron injection layer EIL. Of course, the light-emitting functional layer FL can also adopt other suitable structures, which are not limited here.

[0127] As shown in Figures 2A to 2C, in some embodiments, the thickness of the hole injection layer HIL ranges from 0 to 20 nm, the thickness of the hole transport layer HTL ranges from 70 to 150 nm, the thickness of the hole blocking layer HBL ranges from 0 to 20 nm, the thickness of the electron transport layer ETL ranges from 15 to 50 nm, the thickness of the electron injection layer EIL ranges from 0 to 5 nm, and the thickness of the second electrode E2 ranges from 7 to 30 nm.

[0128] In the embodiment of the present disclosure, a thickness of the film layer of 0 means that the film layer is not provided.

[0129] 2A and 2B further illustrate a light extraction layer CPL1 , which is located on the second electrode E2 , and has a thickness of, for example, 50 to 100 nm.

[0130] 2A and 2B further show a functional film layer CPL2 , which is located on the light extraction layer CPL1 .

[0131] For example, the material of the light extraction layer CPL1 includes an organic material, but is not limited thereto.

[0132] For example, the material of the functional film layer CPL2 includes an organic material or an inorganic material. The organic material may include polydioxyethylenethiophene (PEDOT), and the inorganic material may include silicon oxide or lithium fluoride (LiF), but is not limited thereto.

[0133] For example, as shown in Figures 2A and 2B , the refractive index of the light extraction layer CPL1 is greater than that of the functional film layer CPL2. That is, the light extraction layer CPL1 is made of a high-refractive-index material, while the functional film layer CPL2 is made of a low-refractive-index material. By matching the refractive indices of the light extraction layer CPL1 and the functional film layer CPL2, a better light extraction effect can be achieved. For example, as shown in Figures 2A and 2B , the light extraction layer CPL1 and the functional film layer CPL2 can be referred to as a cover layer. The cover layer is located above the second electrode E2.

[0134] Figures 2B and 2C illustrate a base substrate BS, a buffer layer BF located on the base substrate BS, and a pixel circuit layer PXCL located on the buffer layer BF. The pixel circuit layer PXCL includes a plurality of pixel circuits PXC. The first electrode E1 of the light-emitting element EM is connected to the pixel circuit PXC. The pixel circuit PXC is configured to drive the light-emitting element EM connected thereto to emit light. The light-emitting element EM can be independently controlled by the pixel circuit PXC connected thereto.

[0135] As shown in FIG2C , the pixel defining layer PDL includes a main portion MP and a plurality of pixel openings OPN1. The main portion MP of the pixel defining layer PDL is configured to expose at least a portion of the first electrode E1 of the light emitting element EM. The light emitting area of ​​the light emitting element EM or the sub-pixel 100 corresponds to the area where the pixel openings OPN1 are located.

[0136] As shown in Figure 2C, the light-emitting functional layer FL includes a common layer CL1, a non-common layer NCL, and a common layer CL2. Referring to Figures 2A to 2C, the common layer CL1 may include a hole injection layer HIL and a hole transport layer HTL. The non-common layer NCL may include a light-emitting layer EML, which may also include a color shift adjustment layer AL. The common layer CL2 may include a hole blocking layer HBL, an electron transport layer ETL, and an electron injection layer EIL. Of course, in other embodiments, the common layer CL1, the non-common layer NCL, and the common layer CL2 may be arranged as desired.

[0137] Currently used light-emitting elements, such as OLEDs, mostly adopt a top-emitting device structure, using a reflective first electrode E1 (anode) and a semi-transparent second electrode E2 (cathode) to enhance light extraction efficiency through the microcavity effect.

[0138] According to the characteristics of the light-emitting element, the spectrum of the light-emitting element will be blue-shifted under the viewing angle. The spectrum after microcavity enhancement is referred to as EL spectrum, and the intrinsic spectrum of the material is referred to as PL spectrum. The relationship between the two is: EL(λ)=PL(λ)*Gcav.(λ),

[0139] Wherein, in the above formula, Gcav.(λ) is the microcavity gain.

[0140] The microcavity gain formula is:

[0141] In the above formula, τ cav. and τ con. Corresponding to the excited state lifetimes of the organic material molecules in the microcavity and free space, respectively, R2 is the reflectivity of the light-emitting mirror, R1 is the reflectivity of the total reflection mirror (first electrode E1), A2 is the absorptivity of the light-emitting mirror, (1-R2-A2) is the transmittance of the light-emitting mirror, θ is the light-emitting angle, x is the distance from the light source to the total reflection mirror (first electrode E1, anode), φ BM is the phase at the total reflection mirror (first electrode E1, anode), φ M is the phase at the light-emitting mirror surface (second electrode E2, cathode), L is the microcavity length (the physical length from the first electrode E1 to the second electrode E2, i.e., the physical length from the anode to the cathode), n is the refractive index, and λ is the peak wavelength of the light. The light-emitting mirror surface mentioned above refers to the surface of the second electrode E2 (cathode) close to the first electrode E1, i.e., the lower surface of the second electrode E2 (cathode). It can be seen from the microcavity gain formula that the microcavity gain intensity decreases with increasing angle. Since the intrinsic spectrum of the material remains unchanged, according to the formula for the relationship between the EL spectrum, PL spectrum, and microcavity gain, as the angle increases, the EL spectrum intensity decreases, and the brightness of the display panel decays under the viewing angle.

[0142] Figure 3 is a schematic diagram illustrating the principle of viewing angle brightness attenuation affecting a display panel with an integrated COE structure. Figure 3 is a cross-sectional view of the display panel. Figure 3 is a vertical cross-sectional view of the display panel. As shown in Figure 3, the light-emitting element EM is located on the planar layer PLN. The encapsulation layer EPS is used to encapsulate the light-emitting element EM to protect it from water and oxygen intrusion.

[0143] As shown in Figure 3, the encapsulation layer EPS includes a first encapsulation film EPS1, a second encapsulation film EPS2, and a third encapsulation film EPS3. For example, the first encapsulation film EPS1 and the third encapsulation film EPS3 can be inorganic insulating material layers, and the second encapsulation film EPS2 can be an organic insulating material layer. For example, the inorganic insulating material layer includes at least one of silicon oxide, silicon nitride, or silicon oxynitride, but is not limited thereto. For example, the organic insulating material layer includes resin, but is not limited thereto. For example, the first encapsulation film EPS1 and the third encapsulation film EPS3 can be manufactured using a chemical vapor deposition process. For example, the second encapsulation film EPS2 can be manufactured using an inkjet printing process. For example, the encapsulation layer EPS can also be referred to as a thin film encapsulation layer.

[0144] As shown in FIG3 , the touch structure TL is located on the insulating layer 801 , and the touch structure TL includes a first touch layer TL1 and a second touch layer TL2 , with an insulating layer 802 disposed between the first touch layer TL1 and the second touch layer TL2 .

[0145] As shown in FIG. 3 , the insulating layer 803 is disposed on the touch structure TL, and the black matrix BM is located on the insulating layer 803 .

[0146] As shown in FIG. 3 , the black matrix BM has a main body portion MM and an opening OPN2 .

[0147] As shown in FIG. 3 , the opening OPN2 of the black matrix BM is filled with the color filter layer CF.

[0148] As shown in FIG. 3 , the transparent insulating layer OC is located on the color filter layer CF.

[0149] As shown in FIG3 , the size of the pixel opening OPN1 is D. The orthographic projection of the pixel opening OPN1 on the base substrate BS falls within the orthographic projection of the opening of the black matrix BM on the base substrate BS. The distance between the orthographic projection of the pixel opening OPN1 on the base substrate BS and the orthographic projection of the opening of the black matrix BM on the base substrate BS is D2. The offset distance of the light emitted by the light-emitting element EM is D1. For example, distance D2 is a dimension in the length direction or width direction of the display panel. For example, distance D2 is the maximum distance, but of course, it can also be the minimum distance. That is, the maximum distance between the orthographic projection of the pixel opening OPN1 on the base substrate BS and the orthographic projection of the opening of the black matrix BM on the base substrate in the length direction or width direction of the display panel is D2. The embodiments of the present disclosure are described using the example of the maximum distance D2 between the orthographic projection of the pixel opening OPN1 on the base substrate BS and the orthographic projection of the opening of the black matrix BM on the base substrate in the length direction or width direction of the display panel.

[0150] There are three factors that affect the viewing angle brightness attenuation: the size D of the pixel opening OPN1, the offset distance D1 of the light emitted by the light emitting element EM, and the distance D2 between the orthographic projection of the pixel opening OPN1 on the base substrate BS and the orthographic projection of the opening of the black matrix BM on the base substrate BS.

[0151] 3 shows the light output angles θ1, θ2, and θ of the light emitting element EM. When the offset distance D1 is compared at different positions of the same light emitting element EM, the offset distance D1 of the light at the same light output angle can be compared.

[0152] Figure 4 shows a CIE shift diagram of the white screen of an OLED display panel after 300 hours of use. As shown in Figure 4, the display panel has become severely yellowed after 300 hours of use, with a color difference of more than 5 JNCD compared to its initial state.

[0153] In the display panel, the sub-pixel 100 may include a red sub-pixel (R), a green sub-pixel (G), and a blue sub-pixel (B). The lifespan of the blue sub-pixel is relatively low. If the sub-pixels R / G / B use pixel openings of the same size, the display panel will have a serious yellowing phenomenon after a period of use. To improve this phenomenon, the industry usually designs the blue sub-pixel (B) to have the largest aperture ratio. The embodiment of the present disclosure is described by taking the first sub-pixel 101 as a red sub-pixel (R), the second sub-pixel 102 as a green sub-pixel (G), and the third sub-pixel 103 as a blue sub-pixel (B) as an example. However, it should be noted that the embodiments of the present disclosure include but are not limited to this, and the luminous color of each sub-pixel can be determined as needed.

[0154] For display panels with an integrated COE structure, the size difference between sub-pixels is small, which is conducive to improving the viewing angle optical characteristics, while increasing the size of the blue sub-pixel is conducive to improving the yellowing of the white screen after running for a period of time. That is, the solution to improve the viewing angle optical characteristics is contrary to the design principle of improving the yellowing of the white screen after the product has been running for a period of time.

[0155] FIG5 is a schematic diagram of a display panel provided by an embodiment of the present disclosure. FIG6A is a viewing angle luminance attenuation curve for the display panel shown in FIG5 . FIG6B is a viewing angle color deviation curve for the display panel shown in FIG5 . FIG6C is a W viewing angle CIE trajectory for the display panel shown in FIG5 . FIG6D is a white screen CIE offset for the display panel shown in FIG5 .

[0156] FIG7 is a schematic diagram of a display panel provided by an embodiment of the present disclosure. FIG8A is a viewing angle luminance attenuation curve for the display panel shown in FIG7 . FIG8B is a viewing angle color deviation curve for the display panel shown in FIG7 . FIG8C is a W viewing angle CIE trajectory for the display panel shown in FIG7 . FIG8D is a white screen CIE offset for the display panel shown in FIG7 .

[0157] FIG9 is a schematic diagram of a display panel provided by an embodiment of the present disclosure. FIG10A is a viewing angle luminance attenuation curve for the display panel shown in FIG9 . FIG10B is a viewing angle color deviation curve for the display panel shown in FIG9 . FIG10C is a W viewing angle CIE trajectory for the display panel shown in FIG9 . FIG10D is a white screen CIE offset for the display panel shown in FIG9 .

[0158] FIG11 is a schematic diagram of a display panel provided by an embodiment of the present disclosure. FIG12A is a viewing angle luminance attenuation curve for the display panel shown in FIG11. FIG12B is a viewing angle color deviation curve for the display panel shown in FIG11. FIG12C is a W viewing angle CIE trajectory for the display panel shown in FIG11. FIG12D is a white screen CIE offset for the display panel shown in FIG11.

[0159] As shown in Figures 2A to 2C, Figure 4, Figure 5, Figure 7, Figure 9, and Figure 11, an embodiment of the present disclosure provides a display panel, including a plurality of pixels PX located on a base substrate BS, the pixel PX including a plurality of sub-pixels 100, the sub-pixels 100 having a pixel opening OPN1, the plurality of sub-pixels 100 including a first sub-pixel 101, a second sub-pixel 102, and a third sub-pixel 103, and among the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103, the pixel opening OPN1 of the largest sub-pixel 100 has a size Dmax, and the pixel opening OPN1 of the smallest sub-pixel 100 has a size Dmin, and the display panel satisfies: Dmax / Dmin≤y, y=0.02*Dmin+0.85, where y is a coefficient.

[0160] The display panel provided by the embodiments of the present disclosure performs size ratio matching according to the sizes of different sub-pixels, thereby improving the viewing angle optical characteristics and chromaticity life of the display panel.

[0161] The display panel provided by the embodiments of the present disclosure can effectively improve the problem of deterioration of the viewing angle characteristics of the display panel, thereby obtaining a display panel with excellent viewing angle optical characteristics.

[0162] For example, the smaller the minimum sub-pixel size, the closer the Dmax / Dmin value is to 1, mitigating the luminance decay (L-decay) differences caused by sub-pixel size. A display panel that satisfies the conditions Dmax / Dmin ≤ y, where y = 0.02*Dmin + 0.85, i.e., a display panel designed with this sub-pixel size, exhibits a bluish-white cast, providing excellent visual quality. Luminance decay at a 30° viewing angle is less than or equal to 26%, and after 300 hours of operation, the white image color difference is less than 2.5 JNCD.

[0163] For example, as shown in Figures 5, 7, 9, and 11, the size of the pixel opening OPN1 of the first sub-pixel 101 is Da, the size of the pixel opening OPN1 of the second sub-pixel 102 is Db, and the size of the pixel opening OPN1 of the third sub-pixel 103 is Dc. The display panel shown in Figures 5, 7, 9, and 11 may be a display panel with an integrated COE structure, and its structure may be as shown in Figure 3, but is not limited thereto.

[0164] As shown in FIG5 , in the display panel, the pixel structure is a pentile arrangement. In the pixel structure, the size of the pixel opening OPN1 of the first sub-pixel 101 is the smallest, the size of the pixel opening OPN1 of the second sub-pixel 102 is larger than the size of the first sub-pixel 101, and the size of the pixel opening OPN1 of the third sub-pixel 103 is larger than the size of the pixel opening OPN1 of the second sub-pixel 102, and Da≤Db≤Dc. For example, in some embodiments, Da=10μm, 10μm≤Dc≤11.5μm (the numerical values ​​here are to illustrate the size relationship). According to the relationship between the influence of the sub-pixel placement size on the brightness decay (L-decay), it is required that the monochrome sub-pixels have as many symmetry axes as possible or the periodic pattern composed of sub-pixels of the same color have as many symmetry axes as possible to ensure consistent color deviation in different directions. The sub-pixels in the display panel shown in FIG5 are square in shape, but are not limited to squares.

[0165] The viewing angle optical characteristics achievable by the display panel with the integrated COE structure shown in FIG. 5 are shown in FIG. 6A to FIG. 6C .

[0166] FIG6A is a white screen viewing angle brightness attenuation curve of a display panel with an integrated COE structure. The brightness at a viewing angle of 30° is attenuated by 26%, which is the same as that of a display panel with a POL structure.

[0167] Figure 6B shows the color deviation curve for the white image of a display panel with an integrated COE structure. The color deviation increases with increasing viewing angle, reaching <5 JNCD at a viewing angle of 75°. Figure 6C shows the CIE locus curve for the white image of a display panel with an integrated COE structure. The color of the white image appears cyan-blue at different viewing angles. This design demonstrates excellent viewing angle characteristics for display panels with an integrated COE structure.

[0168] In the display panel with the pixel structure shown in FIG5 , since the size of the third sub-pixel 103 (blue sub-pixel, B) is reduced, the pixel aperture ratio of the third sub-pixel 103 (B) is reduced, and the yellowing of the screen will become more serious after a period of operation. Therefore, the color filter layer CF of the third sub-pixel 103 (B) can be increased to improve the transmittance, but is not limited to this. For example, improving the transmittance of the color filter layer CF can be achieved by adjusting at least one of the film material and reducing the thickness. For example, adjusting the film material includes adding additives thereto. Color filter layers with different transmittances and different colors can be produced by adding different additives. For example, the additives include small molecule dyes, but are not limited to this. The CIE shift of the white screen of the display panel provided by the embodiment of the present disclosure after 300 hours of use is shown in FIG6D . After 300 hours of operation, the color of the white screen of the display panel is yellower than the initial value, and the color difference is less than 2.5JNCD, which is significantly improved compared to the yellowing degree of the sub-pixels R / G / B using the same pixel opening size design.

[0169] In the display panel shown in FIG7 , the pixel structure is a pentile arrangement. The first subpixel 101 (red subpixel, R) has the smallest pixel opening size, Da≤Db≤Dc, Da=15μm, 15μm≤Dc≤17.25μm (these values ​​are for illustrative purposes only). The pixel openings of the subpixels in the display panel shown in FIG7 are circular, but are not limited to circular.

[0170] In the display panel shown in FIG7 , the display panel with an integrated COE structure can achieve viewing angle optical characteristics as shown in FIG8A to FIG8C . FIG8A is a white screen viewing angle brightness attenuation curve of the display panel with an integrated COE structure. The viewing angle brightness attenuation is less than or equal to 26% at 30°. FIG8B is a white screen viewing angle color deviation curve of the display panel with an integrated COE structure. The color deviation value increases with the increase of viewing angle. The color deviation value at a viewing angle of 75° is less than 3JNCD. FIG8C is a white screen viewing angle CIE trajectory curve of the display panel with an integrated COE structure. The color of the white screen is cyan-blue under the viewing angle. Under this design, the display panel with an integrated COE structure has excellent viewing angle characteristics.

[0171] In the embodiments of the present disclosure, CIEx and CIEy represent color coordinates, CIEx being the abscissa and CIEy being the ordinate. For example, in the CIE1931 color space, the coordinates of white light are approximately (0.3, 0.3).

[0172] In the embodiment of the present disclosure, Wx represents the CIEx coordinate of white light (White), and Wy represents the CIEy coordinate of white light (White).

[0173] The CIE shift of the white screen of the display panel shown in FIG7 after 300 hours of use is shown in FIG8D . Compared with the initial value, the color difference of the white screen of the display panel after 300 hours of operation can be less than 2JNCD.

[0174] For example, knowing two coordinates and substituting them into a formula can yield the color difference. For example, the color difference calculation method is as follows: first convert the 1931 coordinate system to the 1976 coordinate system, then calculate the standard deviation of the two coordinates, and finally divide by 0.004 to obtain the color deviation (JNCD).

[0175] For example, the conversion from the 1931 coordinate system to the 1976 coordinate system can be performed using the usual method.

[0176] The CIEx coordinate of white light (White) in the 1931 coordinate system is Wx, the CIEy coordinate of white light (White) is Wy, and the two coordinates of the 1976 coordinate system are u' and v' coordinates, respectively. Then, u'=4*Wx / (-2*Wx+12*Wy+3), v'=9*Wy / (-2*Wx+12*Wy+3), and JNCD=[(u2'-u1') 2+(v2'-v1') 2 ] 1 / 2 / 0.004. The CIE locus of the W viewing angle of the display panel shown in Figure 7 is shown in Figure 8C, and the color difference of the display panel at different viewing angles is shown in Table 1. The JNCD is calculated based on the coordinates at a viewing angle of 0°.

[0177] Table 1 Color difference of the display panel at different viewing angles shown in Figure 7

[0178] As shown in Table 1, the color difference of the white image of the display panel shown in FIG. 7 at a viewing angle of 0° to 60° is less than 2JNCD.

[0179] In the display panel shown in FIG9 , the pixel structure is a pentile arrangement. The first subpixel 101 (red subpixel, R) has the smallest pixel opening size, Da≤Db≤Dc, Da=20μm, 20μm≤Db≤25μm (these values ​​are for illustrative purposes only). In the display panel shown in FIG9 , the pixel opening of each subpixel is a rounded square, but is not limited to a rounded square.

[0180] In the display panel shown in Figure 9, the viewing angle optical characteristics that can be achieved by the display panel with an integrated COE structure are shown in Figures 10A to 10C. Figure 10A is the viewing angle brightness attenuation curve of the white screen of the display panel with an integrated COE structure. The brightness attenuation at a viewing angle of 30° is less than or equal to 26%. Figure 10B is the viewing angle color deviation curve of the white screen of the display panel with an integrated COE structure. The color deviation value increases with the increase of the viewing angle, and the color deviation value at a viewing angle of 75° is <5JNCD. Figure 10C is the viewing angle CIE trajectory curve of the white screen of the display panel with an integrated COE structure. The color of the white screen is cyan-blue under the viewing angle, which is slightly higher than the cyan-blue degree of the display panel shown in Figure 7. Under this design, the display panel with an integrated COE structure has good viewing angle characteristics.

[0181] The CIE shift of the white screen of the display panel shown in FIG9 after 300 hours of use is shown in FIG10D . Compared with the initial value, the color difference of the white screen of the display panel after 300 hours of operation is less than 1.5 JNCD.

[0182] In the display panel shown in FIG11 , the pixel structure is a pentile arrangement. The first subpixel 101 (red subpixel R) has the smallest pixel opening size, Da ≤ Db ≤ Dc. For example, Da = 25 μm, 25 μm ≤ Dc ≤ 33.75 μm (these values ​​are for illustrative purposes only).

[0183] In the display panel shown in Figure 11, the viewing angle optical characteristics that can be achieved by the display panel with an integrated COE structure are shown in Figures 12A to 12C. Figure 12A is the viewing angle brightness attenuation curve of the white screen of the display panel with an integrated COE structure, and the brightness attenuation at a viewing angle of 30° is less than or equal to 26%. Figure 12B is the viewing angle color deviation curve of the white screen of the display panel with an integrated COE structure. As the viewing angle increases, the color deviation value increases, and the color deviation value at a viewing angle of 75° is <4JNCD. Figure 12C is the viewing angle CIE trajectory curve of the white screen of the display panel with an integrated COE structure. The color of the white screen is cyan-blue under the viewing angle. Under this design, the viewing angle characteristics of the display panel with an integrated COE structure are excellent.

[0184] The ordinates in Figures 6A, 8A, 10A, and 12A represent luminous flux percentages. For example, as the viewing angle increases, the brightness gradually decreases. For example, if the brightness at a 0° viewing angle is 500 nits and the brightness at a 30° viewing angle is 400 nits, the brightness at a 30° viewing angle is 80%.

[0185] In the embodiment of the present disclosure, the color of the white screen is cyan-blue under the viewing angle, which means that at the same point, when the viewing angle increases, the screen gradually becomes cyan.

[0186] Figures 6C, 8C, 10C, and 12C show the CIE coordinates at viewing angles of 0, 15, 30, 45, 60, and 75 degrees. From top to bottom in Figures 6C, 8C, 10C, and 12C, they are the CIE coordinates at viewing angles of 0, 15, 30, 45, 60, and 75 degrees, respectively.

[0187] The CIE shift of the white screen of the display panel shown in FIG11 after 300 hours of use is shown in FIG12D . Compared with the initial value, the color difference of the white screen of the display panel after 300 hours of operation is less than 1 JNCD.

[0188] In the display panels shown in Figures 5, 7, 9, and 11, the pixel opening size of the first sub-pixel is the smallest, and the second sub-pixel 102 (green sub-pixel, B) can also be adjusted to be the sub-pixel with the smallest pixel opening size, which is also applicable.

[0189] In the display panels shown in FIG5 , FIG7 , FIG9 , and FIG11 , a pentile arrangement is used as an example for description. The pixel structure can also be adjusted to a real RGB pixel arrangement, and the same is applicable.

[0190] In a display panel with an integrated COE structure, the relationship between the black matrix's influence on the brightness decay (L-decay) of sub-pixels of different colors is as follows: It can also be applied to automotive products to achieve different scenarios. For the formula, please refer to the previous description and will not be repeated here.

[0191] For example, as shown in Figures 5, 7, 9, and 11, in the display panel provided by the embodiments of the present disclosure, the size of the pixel opening OPN1 is the length, diameter, or area of ​​the pixel opening OPN1. By limiting the size D of the pixel opening OPN1 to the length, diameter, or area of ​​the pixel opening OPN1, the parameters in the formula Dmax / Dmin≤0.02*Dmin+0.85 are further clarified. It should be noted that when calculating, the unit of size used for Dmax is the same as the unit of size used for Dmin, that is, when Dmax is identified by length or diameter, Dmin is also identified by length or diameter. When Dmax is identified by area, Dmin is also identified by area.

[0192] For example, as shown in Figures 5, 7, 9, and 11, in the display panel provided by the embodiments of the present disclosure, the shape of the pixel opening OPN1 includes a rectangle, a rounded rectangle, or a circle. Of course, the pixel opening OPN1 in the display panel provided by the embodiments of the present disclosure may also adopt other shapes.

[0193] For example, in the display panel provided in the embodiments of the present disclosure, the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103 are configured to emit light of different colors. The display panel provided in the embodiments of the present disclosure matches the size ratios of monochrome sub-pixels according to the sizes of the different sub-pixels, thereby improving the viewing angle optical characteristics and chromaticity lifespan of the display panel with an integrated COE structure. The display panel provided in the embodiments of the present disclosure is described using the example of the first sub-pixel 101 emitting red light, the second sub-pixel 102 emitting green light, and the third sub-pixel 103 emitting red light.

[0194] For example, as shown in Figures 2A to 2C, Figure 4, Figure 5, Figure 7, Figure 9, and Figure 11, in the display panel provided by the embodiment of the present disclosure, the sub-pixel 100 includes a light-emitting element EM, the size of the pixel opening OPN1 is D, the display panel also includes an encapsulation layer EPS, a black matrix BM and a color filter layer CF, the encapsulation layer EPS is configured to encapsulate the light-emitting element EM, the black matrix BM and the color filter layer CF are located on the encapsulation layer EPS, the black matrix BM has an opening OPN2, the orthographic projection of the pixel opening OPN1 on the substrate BS falls within the orthographic projection of the opening OPN2 of the black matrix BM on the substrate BS, and the distance between the orthographic projection of the pixel opening OPN1 on the substrate BS and the orthographic projection of the opening OPN2 of the black matrix BM on the substrate BS is D2.

[0195] In the embodiment of the present disclosure, the orthographic projection of the pixel opening OPN1 on the base substrate BS is taken as an example, in which the orthographic projection of the opening OPN2 of the black matrix BM on the base substrate BS is completely within the orthographic projection of the opening OPN2 of the black matrix BM on the base substrate BS. Of course, in other embodiments, the orthographic projection of the pixel opening OPN1 on the base substrate BS may not completely fall within the orthographic projection of the opening OPN2 of the black matrix BM on the base substrate BS. As long as the orthographic projection of the pixel opening OPN1 on the base substrate BS overlaps with the orthographic projection of the opening OPN2 of the black matrix BM on the base substrate BS, light can be emitted from the sub-pixel.

[0196] The display panel provided by the embodiments of the present disclosure can effectively improve the problem of deterioration of the viewing angle characteristics of the display panel caused by the introduction of the COE structure, thereby obtaining a display panel with excellent viewing angle optical characteristics.

[0197] For example, as shown in FIG4 , the offset distance of the light emitted by the light emitting element EM is D1, and the display panel satisfies: Here, α represents the degree to which the light emitted by the light emitting element EM is affected by the black matrix BM.

[0198] As can be seen from the above formula, the effect of the black matrix BM on the brightness of the display panel decreases as the size D of the pixel opening OPN1 increases, increases as the offset distance D1 increases, and decreases as the distance D2 increases. The effect of the black matrix BM on the display panel can be reduced by adjusting at least one of the size D of the pixel opening OPN1, the offset distance D1, or the distance D2.

[0199] In the same display panel, the sizes D of the pixel openings OPN1 of sub-pixels of different colors may be different.

[0200] In the above formula, the size D of the pixel opening OPN1 is determined by the product's pixels per inch (PPI). Distance D2 is a product design value. For example, offset distance D1 is related to the thickness and refractive index of the layers between the light-emitting element and the color filter.

[0201] For example, for mobile phone products, the distance D2 is generally designed to be 4 to 6 μm, but is not limited thereto. The distance D2 may be different for different products.

[0202] For example, in the display panel provided in the embodiments of the present disclosure, the display panel satisfies: in, is the brightness of the display panel, is the brightness of the structure obtained by removing the black matrix BM and the color filter layer CF from the display panel, and α is the degree to which the light emitted by the light-emitting element EM is affected by the black matrix BM. α can be obtained using the above formula. That is, Substitute the obtained α into the brightness formula to obtain the brightness of the display panel with the integrated COE structure. The brightness of the structure obtained by removing the black matrix BM and the color filter layer CF from the display panel can be pre-measured by obtaining the structure obtained by removing the black matrix BM and the color filter layer CF. It should be noted that for the accuracy of the brightness value, the difference between the display panel with the integrated COE structure and the structure obtained by removing the black matrix BM and the color filter layer CF is only that the latter does not have the black matrix BM and the color filter layer CF.

[0203] For example, in the display panel provided in the embodiment of the present disclosure, L1 is the film layer closest to the light-emitting side of the light-emitting element EM, Ln is the color filter layer CF, d i is the thickness of the i-th film layer located between the film layer L1 and the film layer Ln, θ i is the refraction angle of the light incident on the i-th film layer, 1 < i < n, n > i, i is a positive integer greater than 1, and n is a positive integer greater than 2. As shown in Figure 3, for example, the offset distance D1 is the horizontal offset distance, that is, the offset distance in the horizontal direction, or the offset distance in the direction X. For example, the offset distance D1 is subject to parameters such as the refractive index and thickness of the film layer through which the light passes. The larger the offset distance D1, the easier it is for the light to be blocked by the black matrix. The offset distance D1 refers to the horizontal distance between the light emission position and the position where the light reaches the color filter layer CF.

[0204] For example, in the embodiment of the present disclosure, the offset distance D1 is the offset distance of the light emitted from the center of the light-emitting element EM. For example, the center of the light-emitting element EM refers to the geometric center of the center of the light-emitting element EM. For example, the center of the light-emitting element EM refers to the center of gravity of the light-emitting element EM, but is not limited thereto.

[0205] For example, as shown in Figure 3, the offset distance D1 is the distance from the intersection of the light with an exit angle of θ emitted from the center of the light-emitting element EM and the plane where the upper surface of the black matrix BM is located to the center of the light-emitting element EM.

[0206] Generally speaking, the offset distance D1 can be the offset distance of the light at any angle between 30° and 60° of the exit angle. As shown in Figure 3, the offset distance D1 in the embodiment of the present disclosure is the offset distance of the light with an exit angle of 30°, of course, it is not limited thereto.

[0207] For example, as shown in FIG3 , the offset distance D1 is the distance from the center of the light-emitting element EM to the intersection of a light ray emitted at an emission angle of θ from the center of the light-emitting element EM and the plane on which the upper surface of the black matrix BM lies, to the center of the light-emitting element EM. For example, the offset distance D1 is less than half the size of the opening OPN2 of the black matrix BM, but is not limited thereto. As shown in FIG3 , the film layer closest to the light-emitting side of the light-emitting element EM is the first encapsulation film EPS1. As shown in FIG3 , the film layers between the film layer L1 and the color filter layer CF include the second encapsulation film EPS2, the third encapsulation film EPS3, the insulating layer 801, the first touch layer TL1, the insulating layer 802, the second touch layer TL2, the insulating layer 803, and the black matrix BM. Of course, the film layers between the film layer L1 and the color filter layer CF are not limited to those shown in FIG3 and can be determined as needed.

[0208] For example, in some display panels, for the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103, the thickness d of each film layer between the light-emitting element and the COE in the sub-pixels emitting light of different colors (R / G / B) is the same, and the refractive index n of the corresponding film layer is also the same. Therefore, it is considered that for the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103, the offset distance D1 is fixed and is assumed to be a constant A. The degree of influence of the COE structure on different sub-pixels That is, the relationship between the black matrix and the brightness decay (L-decay) is as follows: Where i represents a sub-pixel of a different color, for example, j is R, G, or B.

[0209] If the COE structure has the same or similar effect on the viewing angle brightness attenuation of sub-pixels of different colors, for the first sub-pixel 101 being a red sub-pixel (R), the second sub-pixel 102 being a green sub-pixel (G), and the third sub-pixel 103 being a blue sub-pixel (B), the brightness attenuation is consistent, that is, αR = αG = αB, then a display panel with excellent viewing angle optical characteristics can be obtained.

[0210] Of course, in other embodiments, for the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103, the thickness d of each film layer between the light-emitting element and the COE in the sub-pixels (R / G / B) emitting light of different colors may also be different, but the refractive index n of the corresponding film layer is the same. Therefore, the distance D1 can be adjusted by adjusting the thickness d of each film layer between the light-emitting element and the COE at each sub-pixel, so that different sub-pixels can have different distances D1.

[0211] For example, in a display panel provided in an embodiment of the present disclosure, a sub-pixel 100 includes a light-emitting element EM, a pixel opening OPN1 has a size D, and the display panel further includes an encapsulation layer EPS, a black matrix BM, and a color filter layer CF. The encapsulation layer EPS is configured to encapsulate the light-emitting element EM. The black matrix BM and the color filter layer CF are located on the encapsulation layer EPS. The black matrix BM has an opening. The orthographic projection of the pixel opening OPN1 on the base substrate BS falls within the orthographic projection of the opening of the black matrix BM on the base substrate BS. The orthographic projection of the pixel opening OPN1 on the base substrate BS and the orthographic projection of the opening of the black matrix BM on the base substrate BS are separated by a distance D2. At least two of the distances D2 of the first sub-pixel 101, the distance D2 of the second sub-pixel 102, and the distance D2 of the third sub-pixel 103 are different. That is, in the same display panel, different sub-pixels can have different distances D2.

[0212] Thus, in the display panel provided by the embodiments of the present disclosure, for the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103, different sub-pixels may have different pixel opening sizes D, different sub-pixels may have different offset distances D1, and different sub-pixels may have different distances D2. That is, at least two of the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103 may have different pixel opening sizes D, at least two of the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103 may have different offset distances D1, and at least two of the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103 may have different distances D2.

[0213] For example, as shown in FIG6A , FIG8A , FIG10A , and FIG12A , in the display panel provided by the embodiment of the present disclosure, the brightness attenuation at a viewing angle of 30 degrees is less than or equal to 26% compared with the brightness at a viewing angle of 0 degrees.

[0214] For example, as shown in FIG6D , FIG8D , FIG10D , and FIG12D , in the display panel provided by the embodiment of the present disclosure, the color difference of the white screen is less than 2.5JNCD after the display panel has been running for 300 hours compared with the initial operation.

[0215] For example, as shown in Figures 2A to 2C, in the display panel provided by the embodiments of the present disclosure, the light-emitting element EM includes a first light-emitting element EM, a second light-emitting element EM and a third light-emitting element EM, the first light-emitting element EM includes a first light-emitting layer EML1 and a first color deviation adjustment layer AL1, the second light-emitting element EM includes a second light-emitting layer EML2 and a second color deviation adjustment layer AL, and the third light-emitting element EM includes a third light-emitting layer.

[0216] For example, as shown in Figures 2A to 2C , in the display panel provided by the embodiments of the present disclosure, the first color deviation adjustment layer has a thickness of 50 to 100 nm, the second color deviation adjustment layer has a thickness of 25 to 40 nm, and the third light-emitting element EM further includes a third color deviation adjustment layer AL3, the thickness of which is greater than 0 and less than or equal to 15 nm. Of course, the display panel may not include the third color deviation adjustment layer AL3.

[0217] Figure 13 is a top view of a pixel structure of a display panel provided by an embodiment of the present disclosure. Figure 14 is a top view of a pixel structure of a display panel provided by another embodiment of the present disclosure.

[0218] Figure 15 is a cross-sectional view of the largest sub-pixel and a schematic diagram of the optical path of a display panel provided by an embodiment of the present disclosure. Figure 16 is a cross-sectional view of the largest sub-pixel and a schematic diagram of the optical path of another display panel provided by an embodiment of the present disclosure.

[0219] For example, as shown in Figures 13 to 16, in the display panel provided in the embodiments of the present disclosure, the display panel also includes a pixel defining layer PDL, the pixel defining layer PDL is configured to define the pixel opening OPN1, the pixel defining layer PDL includes a pixel dividing portion P0, and the orthographic projection of the pixel dividing portion P0 on the base substrate BS overlaps with the orthographic projection of the pixel opening OPN1 of the largest sub-pixel 100 on the base substrate BS.

[0220] 13 and 14 , the pixel defining layer PDL includes a main portion MP, a pixel opening OPN1, and a pixel dividing portion P0. The pixel dividing portion P0 and the main portion MP can be formed from the same material layer and through the same patterning process.

[0221] As shown in Figures 13 and 14, the second sub-pixel 102 is the largest sub-pixel 100. The second sub-pixel 102 is divided by the pixel divider P0. As shown in Figures 13 and 14, the size of the third sub-pixel 103 can be greater than or equal to the size of the first sub-pixel 101. As shown in Figures 13 and 14, the size of the second sub-pixel 102 is larger than the size of the third sub-pixel 103, and the size of the third sub-pixel 103 is larger than the size of the first sub-pixel 101.

[0222] For example, as shown in Figures 13 and 14, in the display panel provided by the embodiment of the present disclosure, the pixel opening OPN1 of the largest sub-pixel 100 is rectangular. As shown in Figures 13 and 14, the pixel opening OPN1 of the second sub-pixel 102 is rectangular. As shown in Figures 13 and 14, the pixel opening OPN1 of the first sub-pixel 101 is rectangular. As shown in Figures 13 and 14, the pixel opening OPN1 of the third sub-pixel 103 is rectangular.

[0223] For example, as shown in FIG. 13 and FIG. 14 , in the display panel provided by the embodiment of the present disclosure, the size Y0 of the long side of the pixel opening OPN1 of the largest sub-pixel 100 is greater than 30 μm.

[0224] For example, as shown in Figure 13, in the display panel provided by the embodiment of the present disclosure, the pixel opening OPN1 of the largest sub-pixel 100 is partially divided by the pixel dividing portion P0, and the pixel dividing portion P0 has a first interval V1 between the edge of the pixel opening OPN1 in the direction X, and has a second interval V2 between the edge of the pixel opening OPN1 in the direction Y, wherein the direction X is perpendicular to the direction Y.

[0225] For example, as shown in FIG. 13 , in the display panel provided by the embodiment of the present disclosure, the first interval V1 is greater than the second interval V2 .

[0226] For example, as shown in FIG13 , in the display panel provided by the embodiment of the present disclosure, the first interval V1 (distance X1 ) is 5 to 10 μm, and the second interval V2 (distance Y1 ) is 3 to 5 μm.

[0227] As shown in FIG. 13 , the pixel division portion P0 is spaced apart from the main body portion MP.

[0228] For example, as shown in FIG14 , in the display panel provided by an embodiment of the present disclosure, the pixel opening OPN1 of the largest sub-pixel 100 is completely divided by the pixel dividing portion P0, and a distance X3 between the pixel dividing portion P0 and an edge of the pixel opening OPN1 in a direction X is greater than a distance between the pixel dividing portion P0 and an edge of the pixel opening OPN1 in a direction Y, where the direction X is perpendicular to the direction Y. As shown in FIG14 , the distance between the pixel dividing portion P0 and the edge of the pixel opening OPN1 in the direction Y is 0. A third interval V3 is present between the pixel dividing portion P0 and the edge of the pixel opening OPN1 in the direction X.

[0229] As shown in FIG. 14 , the pixel dividing portion P0 and the main body portion MP may be an integrated structure.

[0230] For example, as shown in Figures 13 and 14, in the display panel provided by the embodiment of the present disclosure, the first sub-pixel 101 and the third sub-pixel 103 are located on the same side of the second sub-pixel 102. For example, the first sub-pixel 101 and the third sub-pixel 103 are arranged along the extension direction of the second sub-pixel 102, but are not limited thereto. The shapes of the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103 are not limited to rectangles, and may also be circular or approximately circular. As shown in Figures 13 and 14, the pixel opening OPN1 of the second sub-pixel 102 is larger than the pixel opening OPN1 of the first sub-pixel 101, and larger than the pixel opening OPN1 of the third sub-pixel 103. The display panel further includes a pixel defining layer PDL, which is configured to define the pixel opening OPN1. The pixel defining layer PDL includes a pixel dividing portion P0, and the orthographic projection of the pixel dividing portion P0 on the base substrate BS overlaps with the orthographic projection of the pixel opening OPN1 of the largest sub-pixel 100 on the base substrate BS. The pixel opening OPN1 of the largest sub-pixel 100 OPN1 is completely divided by the pixel dividing portion P0, and the distance X3 between the pixel dividing portion P0 and the edge of the pixel opening OPN1 in the direction X is greater than the distance between the pixel dividing portion P0 and the edge of the pixel opening OPN1 in the direction Y, or the pixel opening OPN1 of the largest sub-pixel 100 is partially divided by the pixel dividing portion P0, and the pixel dividing portion P0 has a first interval V1 between the edge of the pixel opening OPN1 in the direction X and a second interval V2 between the pixel dividing portion P0 and the edge of the pixel opening OPN1 in the direction Y, wherein the direction X is perpendicular to the direction Y.

[0231] As shown in FIG. 13 to FIG. 16 , the second sub-pixel 102 is divided by the pixel dividing portion P0 , but still corresponds to one light-emitting element, which is driven by one pixel circuit.

[0232] For example, as shown in FIG. 15 and FIG. 16 , in the display panel provided by the embodiment of the present disclosure, the orthographic projection of the pixel dividing portion P0 on the base substrate BS overlaps with the orthographic projection of the main portion MM of the black matrix BM on the base substrate BS.

[0233] Figure 16 shows that the light emitting element EM includes a first electrode E1, a second electrode E2, and a light emitting functional layer FL located between the first electrode E1 and the second electrode E2. Figure 15 does not show the specific structure of the light emitting element EM, and reference may be made to other figures for reference.

[0234] For example, in an embodiment of the present disclosure, the first electrode E1 is an anode, and the second electrode E2 is a cathode, but the present invention is not limited thereto.

[0235] For example, as shown in FIG. 15 and FIG. 16 , in the display panel provided by the embodiment of the present disclosure, the size of the opening OPN2 of the black matrix BM is greater than 0 and less than or equal to 2 μm. Of course, other suitable values ​​may also be used.

[0236] Figure 17 is a schematic diagram of white light attenuation in the horizontal direction of the display panels provided in Figures 13 and 15. Figure 18 is a schematic diagram of white light attenuation in the vertical direction of the display panels provided in Figures 13 and 15. For example, the display panel provided in the embodiments of the present disclosure may be an in-vehicle display panel, but is not limited thereto.

[0237] For example, as shown in Figures 17 and 18, in the display panel provided by the embodiment of the present disclosure, when the viewing angle is the same, the brightness attenuation in the vertical direction V is less than the brightness attenuation in the horizontal direction H. That is, the brightness attenuation in the horizontal direction H is greater. For example, at a viewing angle of 0°, the brightness of the display panel is SS, and at the same viewing angle, the brightness of the display panel in the vertical direction is SS1 and the brightness in the horizontal direction is SS2, and SS1 / SS is greater than SS2 / SS. In a vehicle-mounted display panel, this method can be used to make the brightness attenuation in the vertical direction V less than the brightness attenuation in the horizontal direction H, which is beneficial for the driver to see the display panel clearly. For example, one of the vertical direction of the display panel and the horizontal direction of the display panel is the length direction of the display panel, and the other of the vertical direction of the display panel and the horizontal direction of the display panel is the width direction of the display panel.

[0238] For example, as shown in FIG17 , in the display panel provided by an embodiment of the present disclosure, the brightness at a viewing angle greater than 35° in the horizontal direction H is reduced to less than 5% of the brightness at a viewing angle of 0°. In this case, the person sitting in the passenger seat cannot clearly see the content displayed on the display panel.

[0239] The brightness attenuation of the display panel shown in FIG. 16 in the vertical direction V is smaller than the brightness attenuation of the display panel shown in FIG. 15 in the vertical direction V.

[0240] For example, in an embodiment of the present disclosure, the horizontal direction H is parallel to the direction X, and the vertical direction V is parallel to the direction Y.

[0241] For example, the display panel provided by the embodiment of the present disclosure can be an in-vehicle product, that is, an in-vehicle display panel. The relationship between the influence of the COE structure on the brightness decay (L-decay) is as follows: An automotive display panel is designed to implement in-cell light control film (LCF) functionality. Figures 13 and 14 show top views of two pixel structures in the automotive display panel. The pixel structure adopts a Real RGB arrangement. Of the three color sub-pixels, the second sub-pixel 102 (green sub-pixel, G) has the largest area. The center of the second sub-pixel 102 is divided by a pixel partitioning portion P0 in the pixel defining layer (PDL). This structure can be achieved by adjusting the mask of the pixel defining layer (PDL).

[0242] As shown in Figures 13 and 14 , the width of the pixel divider P0 is approximately 6 μm (determined by process capabilities), the distance X1 from the long side of the pixel opening is approximately 5-10 μm, and the distance from the short side Y1 of the pixel opening is approximately 3-5 μm. The pixel structure shown in Figure 14 is similar to that shown in Figure 13 , with the second sub-pixel 102 (green sub-pixel, G) being completely separated by the pixel divider P0.

[0243] As shown in FIG. 13 and FIG. 14 , the width (dimension in the direction X) of the second sub-pixel 102 is approximately 16 to 26 μm, but is not limited thereto.

[0244] For example, as shown in Figures 15 and 16, the display panel (on-board display panel) can be integrated with the COE structure while adding a focusing layer CL0 to focus the side-view light to the front-view output, further reducing the light output at the side view. For example, the focusing layer CL0 includes a transparent optical adhesive layer OC1 and a planarization layer PLN2. The display panel (on-board display panel) also includes a transparent optical adhesive layer OC2, and the transparent optical adhesive layer OC1 is closer to the black matrix BM than the transparent optical adhesive layer OC2. For example, the refractive index of the planarization layer PLN2 is greater than the refractive index of the transparent optical adhesive layer OC1. The planarization layer PLN2 can use a high-refractive-index film layer. For example, the material of the planarization layer PLN2 includes resin, and the resin includes acrylic resin or epoxy resin, but is not limited thereto. For example, the planarization layer PLN2 can use acrylic resin doped with filling particles or epoxy resin doped with filling particles, but is not limited thereto. For example, the particle size of the filling particles is at the nanometer level. For example, the filling particles can be zirconium oxide, but is not limited thereto. For example, the refractive index of the transparent optical adhesive layer OC1 is lower than that of the planarization layer PLN2, so that light can be totally reflected on the transparent optical adhesive layer OC1. As shown in Figures 15 and 16, light incident on the side of the transparent optical adhesive layer OC1 is totally reflected at the interface between the transparent optical adhesive layer OC1 and the planarization layer PLN2, which facilitates light emission from a normal viewing angle. For example, the material of the light-collecting layer CL0 includes a transparent organic material. The materials of the transparent optical adhesive layer OC1 and the transparent optical adhesive layer OC2 include transparent organic materials, but are not limited thereto.

[0245] As shown in Figures 15 and 16, after the EPS encapsulation is completed, the COE and the light-gathering layer structure are arranged on top. For example, as shown in Figures 15 and 16, the opening OPN2 of the black matrix BM is approximately greater than 0 and less than or equal to 2μm, but is not limited thereto.

[0246] As shown in Figures 15 and 16, light with normal and smaller viewing angles is unaffected when emitted through the color filter layer and the light-collecting layer, as shown in optical path L1. When the viewing angle increases, as shown in optical path L2, the majority of the viewing angle light is absorbed by the black matrix BM directly above the sub-pixel. When the viewing angle is further increased, the oblique light passes through the color filter layer CF and reaches the transparent optical adhesive layer OC1 (low-refractive index film layer) of the light-collecting layer CL0, where it is reflected as light with a smaller viewing angle, as shown in optical path L3. A portion of the light with a larger viewing angle (e.g., greater than 30°) is absorbed by the black matrix BM on either side of the sub-pixel, as shown in optical path L4. Because the sub-pixel is divided in the horizontal direction H, the effect of the black matrix BM on luminance decay (L-decay) is reduced to 5-10μm, significantly increasing the impact of the black matrix BM on luminance decay (L-decay) in the horizontal direction H. Figure 16 shows optical path L5. Of course, the sub-pixel in Figure 16 can also be completely divided, that is, no light is left on the left and right sides of the pixel dividing portion P0.

[0247] For example, as shown in Figures 4, 15, and 16, the thickness of the second encapsulation film EPS2 in the encapsulation layer EPS can be increased to further enhance the effect of the black matrix BM on the brightness decay (L-decay) in the horizontal direction H. The structure of the encapsulation layer EPS in Figures 15 and 16 can be referred to Figure 4.

[0248] 13 and 14 , since the size Y0 of the long side of the pixel opening of the sub-pixel is very large (>30 μm), the influence of the black matrix BM on the brightness decay (L-decay) is significantly reduced, and only has an impact at the sub-pixel division. The overall brightness decay (L-decay) is negligibly affected by the black matrix BM, and the brightness decays slowly at the vertical viewing angle V.

[0249] As shown in Figure 17, the brightness attenuates rapidly at the horizontal viewing angle H, dropping to less than 5% when the viewing angle is greater than 35°. As shown in Figure 18, the brightness attenuates slowly at the vertical viewing angle V, allowing the display panel (screen) to be clearly seen at large viewing angles.

[0250] An embodiment of the present disclosure further provides a display device, comprising any of the above-mentioned display panels.

[0251] For example, the display device includes a vehicle-mounted display device, but is not limited thereto.

[0252] An embodiment of the present disclosure also provides a method for manufacturing a display panel, including forming a plurality of pixels PX, wherein forming the pixel PX includes forming a plurality of sub-pixels 100, the sub-pixel 100 having a pixel opening OPN1, the plurality of sub-pixels 100 including a first sub-pixel 101, a second sub-pixel 102, and a third sub-pixel 103, and among the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103, the size of the pixel opening OPN1 of the largest sub-pixel 100 is Dmax, and the size of the pixel opening OPN1 of the smallest sub-pixel 100 is Dmin, and the display panel satisfies: Dmax / Dmin≤y, y=0.02*Dmin+0.85, wherein y is a coefficient.

[0253] The manufacturing method of the display panel provided by the embodiment of the present disclosure matches the size ratio of different sub-pixels to improve the viewing angle optical characteristics and chromaticity life of the display panel.

[0254] For example, in the method for manufacturing a display panel provided in an embodiment of the present disclosure, the sub-pixel 100 includes a light-emitting element EM, and the size of the pixel opening OPN1 is D. The method for manufacturing the display panel further includes an encapsulation layer EPS, a black matrix BM, and a color filter layer CF, wherein the encapsulation layer EPS is configured to encapsulate the light-emitting element EM, the black matrix BM and the color filter layer CF are located on the encapsulation layer EPS, the black matrix BM has an opening, the orthographic projection of the pixel opening OPN1 on the base substrate BS falls within the orthographic projection of the opening of the black matrix BM on the base substrate BS, and the distance between the orthographic projection of the pixel opening OPN1 on the base substrate BS and the orthographic projection of the opening of the black matrix BM on the base substrate BS is D2, and the offset distance of the light emitted by the light-emitting element EM is D1. The method for manufacturing the display panel satisfies the following conditions:

[0255] Wherein, α represents the degree to which the light emitted by the light-emitting element EM is affected by the black matrix BM. As can be seen from the above formula, in the method for manufacturing a display panel provided in the embodiments of the present disclosure, the effect of the black matrix BM on the display panel can be reduced by adjusting at least one of the size D, offset distance D1, and distance D2 of the pixel opening OPN1.

[0256] For example, in the method for manufacturing a display panel provided in an embodiment of the present disclosure, the following conditions are met: in, The brightness of the display panel is shown in the following figure. The brightness of the structure obtained by removing the black matrix BM and the color filter layer CF from the display panel manufacturing method. α is the degree to which the light emitted by the light-emitting element EM is affected by the black matrix BM. α can be calculated using the above formula. Reference may be made to the previous description and will not be elaborated here.

[0257] For example, in the method for manufacturing a display panel provided in an embodiment of the present disclosure, L1 is the film layer closest to the light-emitting side of the light-emitting element EM, Ln is the color filter layer CF, d i is the thickness of the i-th film layer located between the film layer L1 and the film layer Ln, θ i is the refraction angle of the light incident on the i-th film layer, 1 < i < n, n > i, i is a positive integer greater than 1, and n is a positive integer greater than 2. Regarding the offset distance D1, reference may be made to the previous description and will not be elaborated here.

[0258] For example, in the method for manufacturing a display panel provided in an embodiment of the present disclosure, the size D of the pixel aperture OPN1 is the length, diameter, or area of the pixel aperture OPN1. In this manufacturing method, by defining the size D of the pixel aperture OPN1 as the length, diameter, or area of the pixel aperture OPN1, the parameters in the formula Dmax / Dmin ≤ 0.02*Dmin + 0.85 are further clarified.

[0259] For example, in the method for manufacturing a display panel provided in an embodiment of the present disclosure, the shape of the pixel aperture OPN1 includes a rectangle, a rounded rectangle, or a circle.

[0260] For example, in the method for manufacturing a display panel provided in an embodiment of the present disclosure, the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103 are configured to emit light of different colors.

[0261] For example, in the method for manufacturing a display panel provided in an embodiment of the present disclosure, the brightness attenuation is less than or equal to 26% when the brightness at a 30-degree viewing angle is compared with the brightness at a 0-degree viewing angle.

[0262] For example, in the method for manufacturing a display panel provided in an embodiment of the present disclosure, compared with the initial operation, after the method for manufacturing the display panel runs for 300 hours, the color difference of the white screen is less than 2.5 JNCD.

[0263] For example, as shown in FIGS. 13 to 16, in the method for manufacturing a display panel provided in an embodiment of the present disclosure, the manufacturing method further includes forming a pixel defining layer PDL. Among them, the pixel defining layer PDL is configured to define the pixel aperture OPN1, and the pixel defining layer PDL includes a pixel dividing portion P0. The orthographic projection of the pixel dividing portion P0 on the substrate substrate BS overlaps with the orthographic projection of the pixel aperture OPN1 of the sub-pixel 100 with the largest size on the substrate substrate BS.

[0264] For example, as shown in FIG14 and FIG15 , in the method for manufacturing a display panel provided by an embodiment of the present disclosure, the pixel opening OPN1 of the largest sub-pixel 100 is completely divided by the pixel dividing portion P0, and a distance X3 between the pixel dividing portion P0 and an edge of the pixel opening OPN1 in direction X is greater than a distance between the pixel dividing portion P0 and an edge of the pixel opening OPN1 in direction Y (this distance is 0), and direction X is perpendicular to direction Y. For example, distance X3 is 5 to 10 μm, but is not limited thereto.

[0265] For example, as shown in Figures 13 and 15, in the manufacturing method of the display panel provided in the embodiment of the present disclosure, the pixel opening OPN1 of the largest sub-pixel 100 is partially divided by the pixel dividing portion P0, and the pixel dividing portion P0 has a first interval V1 between the edge of the pixel opening OPN1 in the direction X, and has a second interval V2 between the edge of the pixel opening OPN1 in the direction Y, wherein the direction X is perpendicular to the direction Y.

[0266] For example, as shown in FIG13 , in the method for manufacturing a display panel provided in an embodiment of the present disclosure, the first interval V1 is greater than the second interval V2 .

[0267] For example, in the method for manufacturing a display panel provided in an embodiment of the present disclosure, the first interval V1 is 5 to 10 μm, and the second interval V2 is 3 to 5 μm.

[0268] For example, in the method for manufacturing a display panel provided in an embodiment of the present disclosure, the pixel opening OPN1 of the largest sub-pixel 100 is rectangular, but the present invention is not limited thereto.

[0269] For example, as shown in FIG. 13 and FIG. 14 , in the method for manufacturing a display panel provided by an embodiment of the present disclosure, the size of the long side of the pixel opening OPN1 of the largest sub-pixel 100 is greater than 30 μm.

[0270] For example, as shown in FIG. 15 and FIG. 16 , in the method for manufacturing a display panel provided by an embodiment of the present disclosure, a size Y0 of the opening OPN2 of the black matrix BM is greater than 0 and less than or equal to 2 μm.

[0271] For example, in the method for manufacturing a display panel provided in an embodiment of the present disclosure, when the viewing angle values ​​are the same, the brightness attenuation in the vertical direction is smaller than the brightness attenuation in the horizontal direction.

[0272] For example, as shown in FIG17 , in the method for manufacturing a display panel provided by an embodiment of the present disclosure, in the horizontal direction H, the brightness at a viewing angle greater than 35° is attenuated to less than 5% of the brightness at a viewing angle of 0°.

[0273] For example, in a method for manufacturing a display panel provided in an embodiment of the present disclosure, a sub-pixel 100 includes a light-emitting element EM, and a pixel opening OPN1 has a size D. The method for manufacturing the display panel further includes an encapsulation layer EPS, a black matrix BM, and a color filter layer CF. The encapsulation layer EPS is configured to encapsulate the light-emitting element EM, the black matrix BM and the color filter layer CF are located on the encapsulation layer EPS, the black matrix BM has an opening, the orthographic projection of the pixel opening OPN1 on the base substrate BS falls within the orthographic projection of the opening of the black matrix BM on the base substrate BS, and the distance between the orthographic projection of the pixel opening OPN1 on the base substrate BS and the orthographic projection of the opening of the black matrix BM on the base substrate BS is D2. At least two of the distance D2 of the first sub-pixel 101, the distance D2 of the second sub-pixel 102, and the distance D2 of the third sub-pixel 103 are different. The distance D2 of different sub-pixels can be set as needed.

[0274] Due to the inherent disadvantages of the COE structure, the viewing angle characteristics of the display panel deteriorate, resulting in poor angular color deviation. The embodiments of the present disclosure provide a display panel, a method for manufacturing the same, and a display device. By designing the sub-pixel size relationship and / or pixel structure, the relative relationship between the pixel size and viewing angle brightness attenuation of the integrated COE structure is matched to the viewing angle brightness attenuation of the POL product, thereby achieving a display panel with excellent optical characteristics under different viewing angles.

[0275] For example, the embodiments of the present disclosure provide a display panel, a method for manufacturing the same, and a display device based on the influence of the black matrix (BM) on the brightness attenuation from viewing angles. By designing the size relationship and / or pixel structure of the sub-pixels, the relative relationship between the pixel size and the brightness attenuation from viewing angles of the POL product is matched to the pixel size of the integrated COE structure, thereby obtaining a display panel with excellent optical properties under viewing angles. At the same time, the function of a light control film (LCF) for an in-vehicle screen can also be realized. The light control film solves the problem of reflected imaging of large-size display panels on the windshield of a car by controlling the direction of light emission.

[0276] In some figures of the embodiments of the present disclosure, the plan views show directions Y and X, and the cross-sectional views show direction Z. Directions Y and X are both directions parallel to the main surface of the substrate BS. Direction Z is a direction perpendicular to the main surface of the substrate BS. Direction Z is perpendicular to direction X and to direction Y. For example, direction Y and direction X intersect. The embodiments of the present disclosure are described using the example in which direction Y and direction X are perpendicular. As shown in the cross-sectional view, the main surface of the substrate BS is the surface of the substrate BS used to manufacture various components. As shown in the cross-sectional view, the upper surface of the substrate BS is the main surface of the substrate BS.

[0277] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A display panel comprising a plurality of pixels on a substrate, wherein: The pixel includes a plurality of sub-pixels, each of which has a pixel opening. The plurality of sub-pixels include a first sub-pixel, a second sub-pixel, and a third sub-pixel, In the first sub-pixel, the second sub-pixel, and the third sub-pixel, the size of the pixel opening of the largest sub-pixel is Dmax, and the size of the pixel opening of the smallest sub-pixel is Dmin, and the display panel satisfies: Dmax / Dmin≤y, y=0.02*Dmin+0.85, Among them, y is the coefficient.

2. The display panel according to claim 1, wherein: The sub-pixel includes a light-emitting element, and the size of the pixel opening is D. The display panel further includes 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, and the black matrix has an opening. The orthographic projection of the pixel opening on the base substrate falls within the orthographic projection of the opening of the black matrix on the base substrate, and the 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 the length direction or the width direction of the display panel is D2, The offset distance of the light emitted by the light emitting element is D1, and the display panel satisfies: Herein, α represents the degree to which the light emitted by the light-emitting element is affected by the black matrix.

3. The display panel according to claim 2, wherein: The display panel meets the following requirements: in, is the brightness of the display panel, The brightness of the structure obtained by removing the black matrix and the color filter layer from the display panel.

4. The display panel according to claim 2 or 3, wherein: L1 is the film layer closest to the light-emitting side of the light-emitting element, Ln is the color film layer, d i is the thickness of the i-th film layer located between the film layer L1 and the film layer Ln, θ i is the refraction angle of the light incident on the i-th film layer, 1 < i < n, n > i, i is a positive integer greater than 1, and n is a positive integer greater than 2.

5. The display panel according to any one of claims 1 to 4, wherein: The size of the pixel opening is the length, diameter or area of ​​the pixel opening.

6. The display panel according to any one of claims 1 to 5, wherein: The shape of the pixel opening includes a rectangle, a rounded rectangle, or a circle.

7. The display panel according to any one of claims 1 to 6, wherein: The first sub-pixel, the second sub-pixel, and the third sub-pixel are configured to emit light of different colors.

8. The display panel according to any one of claims 2 to 4, wherein: The size D of the pixel opening of the first subpixel is different from the size D of the pixel opening of the second subpixel, the offset distance D1 of the first subpixel is different from the offset distance D1 of the second subpixel, and the distance D2 of the first subpixel is different from the distance D2 of the second subpixel.

9. The display panel according to any one of claims 1 to 8, wherein: The brightness at a viewing angle of 30 degrees is attenuated by less than or equal to 26% compared to the brightness at a viewing angle of 0 degrees.

10. The display panel according to any one of claims 1 to 9, wherein: Compared with the initial operation, after the display panel has been running for 300 hours, the color difference of the white picture is less than 2.5 JNCD.

11. The display panel according to any one of claims 1 to 10, further comprising a pixel defining layer, wherein: The pixel defining layer is configured to define the pixel opening, and the pixel defining layer includes a pixel dividing portion, The orthographic projection of the pixel dividing portion on the base substrate overlaps with the orthographic projection of the pixel opening of the largest sub-pixel on the base substrate.

12. The display panel according to claim 11, wherein: The pixel opening of the largest sub-pixel is completely divided by the pixel dividing portion, and the distance between the pixel dividing portion and the edge of the pixel opening in the first direction is greater than the distance between the pixel dividing portion and the edge of the pixel opening in the second direction, wherein the first direction is perpendicular to the second direction.

13. The display panel according to claim 11, wherein: The pixel opening of the largest sub-pixel is partially divided by the pixel dividing portion, and the pixel dividing portion has a first interval between the edge of the pixel opening in the first direction and a second interval between the edge of the pixel opening in the second direction, wherein the first direction is perpendicular to the second direction.

14. The display panel according to claim 13, wherein: The first interval is greater than the second interval. 15 . The display panel according to claim 14 , wherein the first interval is 5 to 10 μm, and the second interval is 3 to 5 μm.

16. The display panel according to any one of claims 11 to 15, wherein: The pixel opening of the sub-pixel with the largest size is rectangular.

17. The display panel according to claim 16, wherein: The size of the long side of the pixel opening of the largest sub-pixel is greater than 30 μm.

18. The display panel according to any one of claims 2 to 4, wherein: The light-emitting element includes a first light-emitting element, a second light-emitting element and a third light-emitting element. The first light-emitting element includes a first light-emitting layer and a first color deviation adjustment layer. The second light-emitting element includes a second light-emitting layer and a second color deviation adjustment layer. The third light-emitting element includes a third light-emitting layer.

19. The display panel according to claim 18, wherein: The thickness of the first color deviation adjustment layer is 50-100 nm, the thickness of the second color deviation adjustment layer is 25-40 nm, and the third light emitting element further includes a third color deviation adjustment layer, the thickness of the third color deviation adjustment layer is greater than 0 and less than or equal to 15 nm.

20. The display panel according to any one of claims 2 to 4, wherein: The first sub-pixel and the third sub-pixel are located on the 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, and the display panel further includes a pixel defining layer, The pixel defining layer is configured to define the pixel opening, and the pixel defining layer includes a pixel dividing portion, The orthographic projection of the pixel dividing portion on the base substrate overlaps with the orthographic projection of the pixel opening of the largest sub-pixel on the base substrate, The pixel opening of the largest sub-pixel is completely divided by the pixel dividing portion, and the distance between the pixel dividing portion and the edge of the pixel opening in the first direction is greater than the distance between the pixel dividing portion and the edge of the pixel opening in the second direction, or, The pixel opening of the largest sub-pixel is partially divided by the pixel dividing portion, the pixel dividing portion has a first interval with an edge of the pixel opening in the first direction, and has a second interval with an edge of the pixel opening in the second direction, The first direction is perpendicular to the second direction.

21. The display panel according to any one of claims 2 to 4, wherein: The size of the openings of the black matrix is ​​greater than 0 and less than or equal to 2 μm.

22. The display panel according to any one of claims 1 to 21, wherein: At a viewing angle of 0°, the brightness of the display panel is SS. At the same viewing angle, the brightness of the display panel in the vertical direction is SS1 and the brightness in the horizontal direction is SS2, and SS1 / SS is greater than SS2 / SS.

23. The display panel according to any one of claims 1 to 22, wherein: In the horizontal direction, the brightness at a viewing angle greater than 35° is attenuated to less than 5% of the brightness at a viewing angle of 0°.

24. The display panel according to claim 1, wherein: The sub-pixel includes a light-emitting element, and the size of the pixel opening is D. The display panel further includes 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, and the black matrix has an opening. The orthographic projection of the pixel opening on the base substrate falls within the orthographic projection of the opening of the black matrix on the base substrate, and the 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. 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 have different values.

25. A vehicle-mounted display panel, comprising a plurality of pixels, wherein: The pixel includes a plurality of sub-pixels, each of which has a pixel opening. The plurality of sub-pixels include a first sub-pixel, a second sub-pixel, and a third sub-pixel, In the first sub-pixel, the second sub-pixel, and the third sub-pixel, the size of the pixel opening of the largest sub-pixel is Dmax, and the size of the pixel opening of the smallest sub-pixel is Dmin, and the display panel satisfies: Dmax / Dmin≤y, y=0.02*Dmin+0.85, Among them, y is the coefficient.

26. The vehicle-mounted display panel according to claim 25, wherein: The sub-pixel includes a light-emitting element, and the size of the pixel opening is D. The vehicle-mounted display panel further includes 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, and the black matrix has an opening. The orthographic projection of the pixel opening on the base substrate falls within the orthographic projection of the opening of the black matrix on the base substrate, and the 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. The offset distance of the light emitted by the light emitting element is D1, and the vehicle-mounted display panel satisfies: Herein, α represents the degree to which the light emitted by the light-emitting element is affected by the black matrix.

27. The vehicle-mounted display panel according to claim 26, wherein: The vehicle-mounted display panel meets the following requirements: in, is the brightness of the vehicle-mounted display panel, The brightness of the structure obtained by removing the black matrix and the color filter layer from the vehicle-mounted display panel.

28. The vehicle-mounted display panel according to claim 26 or 27, wherein: L1 is the film layer closest to the light-emitting side of the light-emitting element, Ln is the color film layer, d i is the thickness of the i-th film layer located between the film layer L1 and the film layer Ln, θ i is the refraction angle of the light incident on the i-th film layer, 1 < i < n, n > i, i is a positive integer greater than 1, and n is a positive integer greater than 2.

29. The vehicle-mounted display panel according to any one of claims 25 to 28, wherein: The size of the pixel opening is the length, diameter or area of ​​the pixel opening.

30. The vehicle-mounted display panel according to any one of claims 25 to 29, wherein: The shape of the pixel opening includes a rectangle, a rounded rectangle, or a circle.

31. The vehicle-mounted display panel according to any one of claims 25 to 30, wherein: The first sub-pixel, the second sub-pixel, and the third sub-pixel are configured to emit light of different colors.

32. The vehicle-mounted display panel according to any one of claims 25 to 31, wherein: The brightness at a viewing angle of 30 degrees is attenuated by less than or equal to 26% compared to the brightness at a viewing angle of 0 degrees.

33. The vehicle-mounted display panel according to any one of claims 25 to 32, wherein: Compared with the initial operation, after the vehicle-mounted display panel has been running for 300 hours, the color difference of the white screen is less than 2.5JNCD.

34. The vehicle-mounted display panel according to any one of claims 25 to 33, further comprising a pixel defining layer, wherein: The pixel defining layer is configured to define the pixel opening, and the pixel defining layer includes a pixel dividing portion, The orthographic projection of the pixel dividing portion on the base substrate overlaps with the orthographic projection of the pixel opening of the largest sub-pixel on the base substrate.

35. The vehicle-mounted display panel according to claim 34, wherein: The pixel opening of the largest sub-pixel is completely divided by the pixel dividing portion, and the distance between the pixel dividing portion and the edge of the pixel opening in the first direction is greater than the distance between the pixel dividing portion and the edge of the pixel opening in the second direction, wherein the first direction is perpendicular to the second direction.

36. The vehicle-mounted display panel according to claim 35, wherein: The pixel opening of the largest sub-pixel is partially divided by the pixel dividing portion, and the pixel dividing portion has a first interval between the edge of the pixel opening in the first direction and a second interval between the edge of the pixel opening in the second direction, wherein the first direction is perpendicular to the second direction.

37. The vehicle-mounted display panel according to claim 36, wherein: The first interval is greater than the second interval.

38. The vehicle-mounted display panel according to claim 37, wherein: The first interval is 5 to 10 μm, and the second interval is 3 to 5 μm.

39. The vehicle-mounted display panel according to any one of claims 34 to 38, wherein: The pixel opening of the sub-pixel with the largest size is rectangular.

40. The vehicle-mounted display panel according to claim 39, wherein: The size of the long side of the pixel opening of the largest sub-pixel is greater than 30 μm.

41. The vehicle-mounted display panel according to any one of claims 26 to 28, wherein: The size of the openings of the black matrix is ​​greater than 0 and less than or equal to 2 μm.

42. The vehicle-mounted display panel according to any one of claims 25 to 41, wherein: When the viewing angle is the same, the brightness attenuation in the vertical direction is smaller than the brightness attenuation in the horizontal direction.

43. The vehicle-mounted display panel according to any one of claims 25 to 42, wherein: In the horizontal direction, the brightness at a viewing angle greater than 35° is attenuated to less than 5% of the brightness at a viewing angle of 0°.

44. The vehicle-mounted display panel according to claim 25, wherein: The sub-pixel includes a light-emitting element, and the size of the pixel opening is D. The vehicle-mounted display panel further includes 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, and the black matrix has an opening. The orthographic projection of the pixel opening on the base substrate falls within the orthographic projection of the opening of the black matrix on the base substrate, and the 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. 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 have different values.

45. A display device, comprising the display panel according to any one of claims 1 to 24 or the vehicle-mounted display panel according to any one of claims 25 to 44.

46. ​​A method for manufacturing a display panel, comprising forming a plurality of pixels, wherein: Forming the pixel includes forming a plurality of sub-pixels, the sub-pixels having a pixel opening, The plurality of sub-pixels include a first sub-pixel, a second sub-pixel, and a third sub-pixel, In the first sub-pixel, the second sub-pixel, and the third sub-pixel, the size of the pixel opening of the largest sub-pixel is Dmax, and the size of the pixel opening of the smallest sub-pixel is Dmin, and the display panel satisfies: Dmax / Dmin≤y, y=0.02*Dmin+0.85, Among them, y is the coefficient.

47. The method for manufacturing a display panel according to claim 46, wherein: The sub-pixel includes a light-emitting element, and the size of the pixel opening is D. The manufacturing method of the display panel further includes 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, and the black matrix has an opening. The orthographic projection of the pixel opening on the base substrate falls within the orthographic projection of the opening of the black matrix on the base substrate, and the 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. The offset distance of the light emitted by the light emitting element is D1, and the manufacturing method of the display panel satisfies: Herein, α represents the degree to which the light emitted by the light-emitting element is affected by the black matrix.

48. The method for manufacturing a display panel according to claim 47, wherein: The manufacturing method of the display panel meets the following requirements: in, is the brightness of the display panel manufacturing method, The brightness of the structure obtained by removing the black matrix and the color filter layer from the manufacturing method of the display panel.

49. The method for manufacturing a display panel according to claim 47 or 48, wherein: L1 is the film layer closest to the light-emitting side of the light-emitting element, Ln is the color filter layer, d i is the thickness of the i-th film layer located between the film layer L1 and the film layer Ln, θ i is the refraction angle of the light incident on the i-th film layer, 1 < i < n, n > i, i is a positive integer greater than 1, and n is a positive integer greater than 2.

50. The method for manufacturing a display panel according to any one of claims 46 to 49, wherein: The size of the pixel opening is the length, diameter or area of ​​the pixel opening.

51. The method for manufacturing a display panel according to any one of claims 46 to 50, wherein: The shape of the pixel opening includes a rectangle, a rounded rectangle, or a circle.

52. The method for manufacturing a display panel according to any one of claims 46 to 51, wherein: The first sub-pixel, the second sub-pixel, and the third sub-pixel are configured to emit light of different colors.

53. The method for manufacturing a display panel according to any one of claims 46 to 52, wherein: The brightness at a viewing angle of 30 degrees is attenuated by less than or equal to 26% compared to the brightness at a viewing angle of 0 degrees.

54. The method for manufacturing a display panel according to any one of claims 46 to 53, wherein: Compared with the initial operation, after the display panel manufacturing method is operated for 300 hours, the color difference of the white screen is less than 2.5JNCD.

55. The method for manufacturing a display panel according to any one of claims 46 to 54, further comprising forming a pixel defining layer, wherein: The pixel defining layer is configured to define the pixel opening, and the pixel defining layer includes a pixel dividing portion, The orthographic projection of the pixel dividing portion on the base substrate overlaps with the orthographic projection of the pixel opening of the largest sub-pixel on the base substrate.

56. The method for manufacturing a display panel according to claim 55, wherein: The pixel opening of the largest sub-pixel is completely divided by the pixel dividing portion, and the distance between the pixel dividing portion and the edge of the pixel opening in the first direction is greater than the distance between the pixel dividing portion and the edge of the pixel opening in the second direction, wherein the first direction is perpendicular to the second direction.

57. The method for manufacturing a display panel according to claim 55, wherein: The pixel opening of the largest sub-pixel is partially divided by the pixel dividing portion, and the pixel dividing portion has a first interval between the edge of the pixel opening in the first direction and a second interval between the edge of the pixel opening in the second direction, wherein the first direction is perpendicular to the second direction.

58. The method for manufacturing a display panel according to claim 57, wherein: The first interval is greater than the second interval.

59. The method for manufacturing a display panel according to claim 58, wherein: The first interval is 5 to 10 μm, and the second interval is 3 to 5 μm.

60. The method for manufacturing a display panel according to any one of claims 55 to 59, wherein: The pixel opening of the sub-pixel with the largest size is rectangular.

61. The method for manufacturing a display panel according to claim 60, wherein: The size of the long side of the pixel opening of the largest sub-pixel is greater than 30 μm.

62. The method for manufacturing a display panel according to any one of claims 47 to 49, wherein: The size of the openings of the black matrix is ​​greater than 0 and less than or equal to 2 μm.

63. The method for manufacturing a display panel according to any one of claims 46 to 62, wherein: When the viewing angle is the same, the brightness attenuation in the vertical direction is smaller than the brightness attenuation in the horizontal direction.

64. The method for manufacturing a display panel according to any one of claims 46 to 63, wherein: In the horizontal direction, the brightness at a viewing angle greater than 35° is attenuated to less than 5% of the brightness at a viewing angle of 0°.

65. The method for manufacturing a display panel according to claim 46, wherein: The sub-pixel includes a light-emitting element, and the size of the pixel opening is D. The manufacturing method of the display panel further includes 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, and the black matrix has an opening. The orthographic projection of the pixel opening on the base substrate falls within the orthographic projection of the opening of the black matrix on the base substrate, and the 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. 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 have different values.

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