Display panel and display device

Abstract

The present disclosure relates to the technical field of display. A display panel comprises: a display backplane comprising a first sub-pixel and a second sub-pixel; a touch layer group that is disposed on a light-exit side of the display backplane and comprises a first touch function layer, the first touch function layer comprising a dummy portion, the dummy portion being provided with a via, and the orthographic projection of the via on the display backplane covers the first sub-pixel; a light adjustment layer disposed on the side of the first touch function layer facing away from the display backplane, and provided with a first recessed portion and a second recessed portion, the orthographic projection of the first recessed portion on the display backplane overlapping with the first sub-pixel, and the orthographic projection of the second recessed portion on the display backplane overlapping with the second sub-pixel, wherein the dummy portion extends at least to a sidewall of the first recessed portion; a first filter layer, at least part of which is located in the first recessed portion, the refractive index of the first filter layer being greater than that of the light adjustment layer; and a second filter layer, at least part of which is located in the second recessed portion, the refractive index of the second filter layer being greater than that of the light adjustment layer and less than that of the first filter layer.

Description

Display panel and display device

[0001] Cross-reference to related applications

[0002] The present disclosure claims priority to Chinese Patent Application No. 202411081719.2, filed on August 7, 2024, entitled “Display panel and display device”, the entire contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of display, in particular, to a display panel and a display device. BACKGROUND

[0004] OLED (Organic Electroluminescence Display) display panel, due to its high brightness, low power consumption, fast response, high definition, good flexibility, high luminous efficiency and other advantages, can meet the new needs of consumers for display technology.

[0005] However, the light extraction efficiency of different color sub-pixels of the current display panel is different, which leads to the display panel being prone to color deviation defects.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0007] The purpose of the present disclosure is to overcome the shortcomings of the prior art, and to provide a display panel and a display device.

[0008] According to one aspect of the present disclosure, a display panel is provided, comprising:

[0009] A display backplane comprising a first sub-pixel, a second sub-pixel and a third sub-pixel;

[0010] A touch layer group is provided on the light-emitting side of the display backplane, and the touch layer group comprises a first touch functional layer, the first touch functional layer comprises a dummy part, the dummy part is provided with a via hole, and the orthographic projection of the via hole on the display backplane covers the first sub-pixel;

[0011] A light adjusting layer is provided on the side of the first touch functional layer away from the display backplane, the light adjusting layer is provided with a first recess and a second recess, the orthographic projection of the first recess on the display backplane at least partially overlaps the first sub-pixel, and the orthographic projection of the second recess on the display backplane at least partially overlaps the second sub-pixel; the dummy part at least extends to the sidewall of the first recess;

[0012] a first filter layer, at least part of the first filter layer is located in the first recess, a refractive index of the first filter layer is greater than a refractive index of the light adjusting layer;

[0013] a second filter layer, at least part of the second filter layer is located in the second recess, a refractive index of the second filter layer is greater than the refractive index of the light adjusting layer, and the refractive index of the second filter layer is less than the refractive index of the first filter layer.

[0014] In an example embodiment of the present disclosure, a distance between an edge line of a normal projection of the via on the display backplane and an edge line of the first sub-pixel is greater than or equal to 0 and less than or equal to 1 micrometer.

[0015] In an example embodiment of the present disclosure, a distance between an edge line of a normal projection of the via on the display backplane and an edge line of a normal projection of the first recess on the display backplane is greater than or equal to 0 and less than or equal to 2 micrometers.

[0016] In an example embodiment of the present disclosure, the dummy portion is arranged in a ring shape, and a ring width of the dummy portion is greater than or equal to 3 micrometers and less than or equal to 4 micrometers.

[0017] In an example embodiment of the present disclosure, a third recess is further arranged on the light adjusting layer, a normal projection of the third recess on the display backplane at least partially overlaps with the third sub-pixel, and the display panel further comprises:

[0018] a third filter layer, at least part of the third filter layer is located in the third recess, a refractive index of the third filter layer is greater than the refractive index of the light adjusting layer, and the refractive index of the third filter layer is less than the refractive index of the first filter layer.

[0019] In an example embodiment of the present disclosure, a normal projection of the first recess on the display backplane completely covers the first sub-pixel, and / or a normal projection of the second recess on the display backplane completely covers the second sub-pixel, and / or a normal projection of the third recess on the display backplane completely covers the third sub-pixel.

[0020] In an example embodiment of the present disclosure, the first recess, the second recess, and the third recess are through holes arranged on the light adjusting layer.

[0021] In an example embodiment of the present disclosure, the light adjusting layer comprises a second island and a third island, the second island is located in the second recess, and the third island is located in the third recess.

[0022] In an example embodiment of the present disclosure, a height of a sidewall of the second island in a second direction increases as a distance from a center of the second sub-pixel in a first direction decreases; a height of a sidewall of the third island in the second direction increases as a distance from a center of the third sub-pixel in the first direction decreases; the second direction is perpendicular to a face of the display backplane on which the touch layer set is disposed, and the first direction is parallel to the face of the display backplane on which the touch layer set is disposed.

[0023] In an example embodiment of the present disclosure, the sidewall of the second island includes a slope, and an included angle between the sidewall of the second island and a first reference plane is greater than or equal to 55° and less than or equal to 85°; the sidewall of the third island includes a slope, and an included angle between the sidewall of the third island and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the first reference plane is parallel to a face of the display backplane on which the touch layer set is disposed.

[0024] In an example embodiment of the present disclosure, a ratio of an area of a projection of the second island on the display backplane to an area of a projection of the second recess on the display backplane is greater than or equal to 3% and less than or equal to 40%, and a ratio of an area of a projection of the third island on the display backplane to an area of a projection of the third recess on the display backplane is greater than or equal to 3% and less than or equal to 40%.

[0025] In an example embodiment of the present disclosure, a maximum dimension of a projection of the second island on the display backplane is greater than or equal to 3 microns and less than or equal to 5 microns, and a maximum dimension of a projection of the third island on the display backplane is greater than or equal to 3 microns and less than or equal to 5 microns.

[0026] In an example embodiment of the present disclosure, the first recess is a blind hole disposed on the light adjusting layer, and the second recess and the third recess are through holes disposed on the light adjusting layer.

[0027] In an example embodiment of the present disclosure, a thickness of the light adjusting layer is greater than or equal to 1.5 microns and less than or equal to 2.5 microns, and a thickness of the light adjusting layer at the first recess is greater than or equal to 0.5 microns and less than or equal to 1 micron.

[0028] In an example embodiment of the present disclosure, a height of a sidewall of the first recess in a second direction increases as a distance from a center of the first sub-pixel in a first direction increases; a height of a sidewall of the second recess in the second direction increases as a distance from a center of the second sub-pixel in the first direction increases; a height of a sidewall of the third recess in the second direction increases as a distance from a center of the third sub-pixel in the first direction increases; the second direction is perpendicular to a face of the display backplane on which the touch layer group is disposed, and the first direction is parallel to the face of the display backplane on which the touch layer group is disposed.

[0029] In an example embodiment of the present disclosure, a sidewall of the first recess includes a slope, an included angle between the sidewall of the first recess and a first reference plane is greater than or equal to 55° and less than or equal to 85°; a sidewall of the second recess includes a slope, an included angle between the sidewall of the second recess and the first reference plane is greater than or equal to 55° and less than or equal to 85°; a sidewall of the third recess includes a slope, an included angle between the sidewall of the third recess and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the first reference plane is parallel to a face of the display backplane on which the touch layer group is disposed.

[0030] In an example embodiment of the present disclosure, the display panel further comprises:

[0031] A light shielding layer is disposed on a side of the light adjusting layer facing away from the display backplane, the light shielding layer is provided with a first via hole, a second via hole and a third via hole, a normal projection of the first via hole on the display backplane covers the first sub-pixel, a normal projection of the second via hole on the display backplane covers the second sub-pixel, and a normal projection of the third via hole on the display backplane covers the third sub-pixel.

[0032] A second planarization layer is disposed on a side of the light shielding layer facing away from the display backplane.

[0033] In an example embodiment of the present disclosure, the first filter layer is located in the first via hole, the second filter layer is located in the second via hole, and the third filter layer is located in the third via hole, a spacing between a hole wall of the first via hole and the first filter layer is greater than or equal to 0 and less than or equal to 2 microns, a spacing between a hole wall of the second via hole and the second filter layer is greater than or equal to 0 and less than or equal to 2 microns, and a spacing between a hole wall of the third via hole and the third filter layer is greater than or equal to 0 and less than or equal to 2 microns.

[0034] In an example embodiment of the present disclosure, a portion of the first filter layer, the second filter layer, and the third filter layer extends to a side of the light adjusting layer facing away from the display backplane and does not overlap; a ring width of the overlapping portion of the first filter layer and the light adjusting layer is greater than or equal to 0 and less than or equal to 2 microns, a ring width of the overlapping portion of the second filter layer and the light adjusting layer is greater than or equal to 0 and less than or equal to 2 microns, and a ring width of the overlapping portion of the third filter layer and the light adjusting layer is greater than or equal to 0 and less than or equal to 2 microns.

[0035] In an example embodiment of the present disclosure, the light adjusting layer is provided with a fourth recess, a fifth recess, and a sixth recess, the fourth recess surrounds the first recess, the fifth recess surrounds the second recess, and the sixth recess surrounds the third recess; the light shielding layer is further provided in the fourth recess, the fifth recess, and the sixth recess, or the light shielding layer is further provided in the fourth recess, the fifth recess, and the sixth recess, and the first filter layer is further provided in the fourth recess, the second filter layer is further provided in the fifth recess, and the third filter layer is further provided in the sixth recess.

[0036] In an example embodiment of the present disclosure, a portion of the first filter layer, the second filter layer, and the third filter layer extends to a side of the light adjusting layer facing away from the display backplane and does not overlap, and the light shielding layer is at least provided on a side of the first filter layer, the second filter layer, and the third filter layer facing away from the display backplane.

[0037] In an example embodiment of the present disclosure, a distance between an edge line of a normal projection of the first via on the display backplane and an edge line of a normal projection of the first recess on the display backplane is greater than or equal to 1 micron and less than or equal to 3 microns, a distance between an edge line of a normal projection of the second via on the display backplane and an edge line of a normal projection of the second recess on the display backplane is greater than or equal to 1 micron and less than or equal to 3 microns, a distance between an edge line of a normal projection of the third via on the display backplane and an edge line of a normal projection of the third recess on the display backplane is greater than or equal to 1 micron and less than or equal to 3 microns, and a portion of the first filter layer, the second filter layer, and the third filter layer extends to a side of the light shielding layer facing away from the display backplane.

[0038] In an example embodiment of the present disclosure, a thickness of the first filter layer is greater than a thickness of the second filter layer, and a thickness of the first filter layer is greater than a thickness of the third filter layer.

[0039] According to another aspect of the present disclosure, there is provided a display device comprising the display panel of any one of the above.

[0040] It should be understood that the general description above and the detailed description below are merely exemplary and explanatory and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0041] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure. It is readily apparent to one skilled in the art that the following description of the drawings is merely exemplary and explanatory of the present disclosure and that other drawings can be derived from these drawings without resorting to an inventive faculty.

[0042] FIG. 1 is a structural schematic diagram of a first exemplary embodiment of a display panel according to the present disclosure.

[0043] FIG. 2 is a structural schematic diagram of a display backplane and a touch layer group in FIG. 1.

[0044] FIG. 3 is a structural schematic diagram of a first recess, a second recess, and a third recess in FIG. 1.

[0045] FIG. 4 is a structural schematic diagram of a second exemplary embodiment of a display panel according to the present disclosure.

[0046] FIG. 5 is a structural schematic diagram of a second island and a third island in FIG. 4.

[0047] FIG. 6 is a structural schematic diagram of a third exemplary embodiment of a display panel according to the present disclosure.

[0048] FIG. 7 is a structural schematic diagram of a fourth exemplary embodiment of a display panel according to the present disclosure.

[0049] FIG. 8 is a structural schematic diagram of a fifth exemplary embodiment of a display panel according to the present disclosure.

[0050] FIG. 9 is a structural schematic diagram of a sixth exemplary embodiment of a display panel according to the present disclosure.

[0051] FIG. 10 is a structural schematic diagram of a seventh exemplary embodiment of a display panel according to the present disclosure.

[0052] FIG. 11 is a structural schematic diagram of an eighth exemplary embodiment of a display panel according to the present disclosure.

[0053] FIG. 12 is a structural schematic diagram of a ninth exemplary embodiment of a display panel according to the present disclosure.

[0054] FIG. 13 is a structural schematic diagram of a tenth exemplary embodiment of a display panel according to the present disclosure.

[0055] FIG. 14 is a structural schematic diagram of an eleventh exemplary embodiment of a display panel according to the present disclosure.

[0056] FIG. 15 is a structural schematic diagram of a twelfth example embodiment of a display panel of the present disclosure.

[0057] FIG. 16 is a structural schematic diagram of a thirteenth example embodiment of a display panel of the present disclosure.

[0058] FIG. 17 is a structural schematic diagram of a fourteenth example embodiment of a display panel of the present disclosure.

[0059] FIG. 18 is a structural schematic diagram of a fifteenth example embodiment of a display panel of the present disclosure.

[0060] FIG. 19 is a structural schematic diagram of a sixteenth example embodiment of a display panel of the present disclosure.

[0061] BRIEF DESCRIPTION OF REFERENCE NUMERALS: 10, display backplane; 1, substrate substrate; 2, drive substrate; 21, shielding layer; 22, buffer layer; 231, channel portion; 232, source connection portion; 233, drain connection portion; 24, gate insulation layer; 25, gate electrode layer; 251, gate electrode; 26, interlayer dielectric layer; 27, first connection conductor layer; 271, source electrode; 272, drain electrode; 28, first planarization layer; 3, light-emitting substrate; 31, first electrode; 32, pixel definition layer; 321, opening portion; 33, light-emitting layer group; 34, second electrode; 35, sub-pixel; 35R, first sub-pixel; 35G, second sub-pixel; 35B, third sub-pixel; 4, encapsulation layer group; 5, touch layer group; 51, base layer; 52, second touch function layer; 53, touch insulation layer; 54, first touch function layer; 541, dummy portion; 5411, via hole; 55, protective layer; 542, touch electrode; 6, light regulation layer; 61, first recessed portion; 611, first portion; 612, second portion; 613, third portion; 62, second recessed portion; 621, fourth portion; 622, fifth portion; 623, sixth portion; 63, third recessed portion; 631, seventh portion; 632, eighth portion; 633, ninth portion; 64, fourth recessed portion; 65, fifth recessed portion; 66, sixth recessed portion; 67, second island; 671, first segment; 672, second segment; 673, third segment; 68, third island; 681, fourth segment; 682, fifth segment; 683, sixth segment; 7R, first filter layer; 7G, second filter layer; 7B, third filter layer; 8, light shielding layer; 81, first via hole; 82, second via hole; 83, third via hole; 9, second planarization layer; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0062] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations can be implemented in any number of manners, and are not limited to the example implementations described herein; rather, examples implementations should be understood as illustrative in nature. Like reference numerals refer to like elements throughout the drawings, and detailed descriptions of the drawings are omitted for brevity. Further, the drawings are not necessarily drawn to scale.

[0063] Although relative terms such as "upper", "lower", etc. are used herein to describe one component's relationship to another component of the icon, these terms are used herein solely for convenience, e.g., based on the orientation of the examples shown in the drawings. It will be understood that if the device of the icon is turned over so that what is described as the "upper" component becomes the "lower" component, then the descriptions will be reversed. When a structure is "on" another structure, it can mean that the structure is formed integrally with the other structure, or that the structure is "directly" on the other structure, or that the structure is "indirectly" on the other structure via another structure.

[0064] The terms "one", "a", "an", "the", and "at least one" are used to mean that "one or more" of something is present; the terms "comprising", "having", and "including" are used to mean "including, but not limited to"; the term "first", "second", and "third" are used to distinguish elements with like reference numerals and are not used to limit the number of elements; and the term "plurality" is used to mean "a plurality of, i.e., one or more.

[0065] In the present application, unless specifically stated and limited otherwise, the term "connected" is used broadly and encompasses direct and indirect connections, fixed and removable connections, and one component integrally formed with another component. The term "and / or" is used to mean "and", "or", or both, for example, A and / or B can mean A or B or both A and B. In addition, the term "or" as used herein is used to mean "and / or", e.g., A or B or C can mean A or B or C or AB or BC or AC or ABC (A and B and C).

[0066] The display panel provided by the example embodiments of the present disclosure can include a display backplane 10, a touch layer group 5, a light adjusting layer 6, a first filter layer 7R, and a second filter layer 7G. The display backplane 10 can include a first sub-pixel 35R, a second sub-pixel 35G, and a third sub-pixel 35B. The touch layer group 5 is arranged on the light-emitting side of the display backplane 10. The touch layer group 5 can include a first touch functional layer 54, which can include a dummy portion 541 provided with a via hole 5411. The orthogonal projection of the via hole 5411 on the display backplane 10 covers the first sub-pixel 35R. The light adjusting layer 6 is arranged on the side of the first touch functional layer 54 away from the display backplane 10. The light adjusting layer 6 is provided with a first recessed portion 61 and a second recessed portion 62. The orthogonal projection of the first recessed portion 61 on the display backplane 10 at least partially overlaps the first sub-pixel 35R. The orthogonal projection of the second recessed portion 62 on the display backplane 10 at least partially overlaps the second sub-pixel 35G. The dummy portion 541 extends at least to the sidewall of the first recessed portion 61. At least part of the first filter layer 7R is located in the first recessed portion 61. The refractive index of the first filter layer 7R is greater than that of the light adjusting layer 6. At least part of the second filter layer 7G is located in the second recessed portion 62. The refractive index of the second filter layer 7G is greater than that of the light adjusting layer 6, and the refractive index of the second filter layer 7G is less than that of the first filter layer 7R.

[0067] In the display panel of the present disclosure, light emitted from the first filter layer 7R to the light adjusting layer 6 is emitted from a denser medium to a rarer medium. Therefore, total reflection is likely to occur at the interface between the first filter layer 7R and the sidewall of the first recessed portion 61. The sidewall of the first recessed portion 61 causes the total reflection of the oblique emitted light to form total reflection light, changes the angle of the emitted light, and thus makes the total reflection light more concentrated, which is emitted from the front of the display panel, thereby improving the light-emitting efficiency of the front of the display panel. Light emitted from the second filter layer 7G to the light adjusting layer 6 is emitted from a denser medium to a rarer medium. Therefore, total reflection is likely to occur at the interface between the second filter layer 7G and the sidewall of the second recessed portion 62. The sidewall of the second recessed portion 62 causes the total reflection of the oblique emitted light to form total reflection light, changes the angle of the emitted light, and thus makes the total reflection light more concentrated, which is emitted from the front of the display panel, thereby improving the light-emitting efficiency of the front of the display panel.

[0068] On the other hand, the dummy part 541 extends at least to the sidewall of the first recessed part 61, so that a part of the sidewall of the first recessed part 61 is occupied by the dummy part 541 and cannot perform total reflection, thereby reducing the light rays that produce total reflection at the interface between the first filter layer 7R and the light ray adjusting layer 6, and further reducing the light emission efficiency of the first sub-pixel 35R. Moreover, the dummy part 541 can shield the light rays emitted from the first sub-pixel 35R, further reducing the light emission efficiency of the first sub-pixel 35R, and can reduce or even avoid the color deviation caused by the different gains of the light emission efficiency of different color sub-pixels 35.

[0069] The display backplane 10 can be an OLED (Organic Electroluminescence Display) display backplane 10, a QLED (Quantum Dot Light Emitting Diodes) display backplane 10, or the like. The display backplane 10 has a light emission side and a non-light emission side, the light emission side and the non-light emission side are oppositely arranged, and a display picture can be displayed on the light emission side. One side of the display picture is a display surface.

[0070] In the following, the OLED display backplane 10 is taken as an example for illustration.

[0071] In the present example embodiment, referring to FIG. 2, the display backplane 10 can include a substrate 1, and the material of the substrate 1 can include an inorganic material, for example, the inorganic material can be glass, quartz, metal, or the like. The material of the substrate 1 can also include an organic material, for example, the organic material can be a resin material such as polyimide, polycarbonate, polyacrylate, polyetherimide, polyethersulfone, polyethylene terephthalate, and polyethylene naphthalate. The substrate 1 can be formed by multiple layers of materials, for example, the substrate 1 can include multiple substrate layers, and the material of the substrate layers can be any of the above materials. Of course, the substrate 1 can also be provided as a single layer, and can be any of the above materials.

[0072] Referring to FIG. 2, the display backplane 10 can further include a driving substrate 2 and a light emitting substrate 3. The driving substrate 2 is arranged on one side of the substrate 1, and the light emitting substrate 3 is arranged on the side of the driving substrate 2 away from the substrate 1. The driving substrate 2 can include a plurality of driving circuits arranged in an array, and the light emitting substrate 3 can include a plurality of light emitting devices arranged in an array. The driving circuits can drive the light emitting devices to emit light.

[0073] Specifically, referring to FIG. 2, a shielding layer 21 can be provided on one side of the substrate 1. Light rays entering the active layer from the substrate 1 can generate photo-generated carriers in the active layer, which can greatly affect the characteristics of the thin film transistor and ultimately affect the display quality of the display device. The shielding layer 21 can shield the light rays entering from the substrate 1, thereby avoiding affecting the characteristics of the thin film transistor and avoiding affecting the display quality of the display device. Depending on the type of thin film transistor, the shielding layer 21 can be omitted.

[0074] A buffer layer 22 can also be formed on the side of the shielding layer 21 away from the substrate 1. The buffer layer 22 can block water vapor and impurity ions in the substrate 1 (particularly organic material), and can also add hydrogen ions to the subsequently formed active layer. The buffer layer 22 can be made of an insulating material to insulate and separate the shielding layer 21 from the active layer. The buffer layer 22 can include silicon nitride, silicon oxide, or silicon oxynitride. Depending on the type of substrate 1 or process conditions, the buffer layer 22 can be omitted.

[0075] The active layer can include a channel portion 231 and conductor portions provided at both ends of the channel portion 231. One of the two conductor portions is a source connection portion 232, and the other is a drain connection portion 233. A gate insulating layer 24 can be provided on the side of the active layer away from the substrate 1. A gate layer 25 can be provided on the side of the gate insulating layer 24 away from the substrate 1. The gate layer 25 can include a gate 251 and a gate line (not shown in the figure).

[0076] An interlayer dielectric layer 26 can be provided on the side of the gate layer 25 away from the substrate 1. Connection vias can be provided on the interlayer dielectric layer 26 and connected to the source connection portion 232 and the drain connection portion 233. A first connection conductor layer 27 can be provided on the side of the interlayer dielectric layer 26 away from the substrate 1. The first connection conductor layer 27 can include a source 271, a drain 272, and a data line (not shown in the figure). The data line can be connected to the source 271 or can be part of the data line as the source 271. The source 271 is connected to the source connection portion 232 through the connection vias on the interlayer dielectric layer 26, and the drain 272 is connected to the drain connection portion 233 through the connection vias on the interlayer dielectric layer 26.

[0077] In some example embodiments of the present disclosure, a passivation layer can be provided on the side of the first connection conductor layer 27 away from the substrate 1. Connection vias can also be provided on the passivation layer. A second connection conductor layer can be provided on the side of the passivation layer away from the substrate 1. The second connection conductor layer can include a second source and / or a second drain. The second source and the second drain are connected to the source and the drain, respectively, through the connection vias on the passivation layer. Of course, a third connection conductor layer, a fourth connection conductor layer, and the like can also be provided as needed.

[0078] Please continue to refer to FIG. 2, a first planarization layer 28 is disposed on the side of the first connection conductor layer 27 away from the substrate 1, a connection via is disposed on the first planarization layer 28, and the connection via is connected to the drain 272. The channel portion 231, the gate 251, the source 271, and the drain 272 form a thin film transistor.

[0079] It should be noted that the thin film transistor described in the present specification is a top-gate type thin film transistor, and in other example embodiments of the present disclosure, the thin film transistor can also be a bottom-gate type or a dual-gate type, and the specific structure thereof will not be described here. Moreover, in the case of using a thin film transistor with opposite polarity or in the case of changing the current direction in circuit operation, the functions of the "source 271" and the "drain 272" are sometimes interchanged. Therefore, in the present specification, the "source 271" and the "drain 272" can be interchanged.

[0080] Please continue to refer to FIG. 2, a light-emitting substrate 3 is disposed on the side of the first planarization layer 28 away from the substrate 1, and the light-emitting substrate 3 can include a first electrode 31, a pixel definition layer 32, a light-emitting layer group 33, and a second electrode 34.

[0081] Specifically, the first electrode 31 is disposed on the side of the first planarization layer 28 away from the substrate 1, and the first electrode 31 is connected to the drain 272 of the driving backplane through the connection via, and the first electrode 31 is provided with a driving signal through the drain 272. The first electrode 31 can be an anode (pixel electrode).

[0082] The pixel definition layer 32 is disposed on the side of the first electrode 31 away from the substrate 1, and as shown in FIG. 2, the pixel definition layer 32 is provided with an opening portion 321, and the opening portion 321 is communicated to the first electrode 31, that is, at least part of the first electrode 31 is not covered by the pixel definition layer 32. The pixel definition layer 32 can be made of a black material capable of absorbing photons, for example, the material of the pixel definition layer 32 can be black ink; stray light can be absorbed through the pixel definition layer 32, thereby improving the display effect.

[0083] The light-emitting layer group 33 is disposed on the side of the pixel definition layer 32 away from the substrate 1, and at least part of the light-emitting layer group 33 is located in the opening portion 321. The second electrode 34 is disposed on the side of the light-emitting layer group 33 away from the substrate 1, and the second electrode 34 can be a cathode (common electrode). The light-emitting layer group 33 in one opening portion 321 emits light to form one sub-pixel 35, so that the orthographic projection of the sub-pixel 35 on the substrate 1 is the orthographic projection of the light-emitting layer group 33 in the opening portion 321 on the substrate 1.

[0084] It should be noted that, since the side wall of the opening part 321 of the pixel definition layer 32 is inclined, the sub-pixel 35 refers to the range of the bottom wall of the opening part 321 of the pixel definition layer 32, that is, the sub-pixel 35 refers to the range enclosed by the edge of the opening part 321 of the pixel definition layer 32 close to the substrate substrate 1.

[0085] The display backplane 10 can include a plurality of sub-pixels 35, specifically, the display backplane 10 can include a plurality of first sub-pixels 35R, a plurality of second sub-pixels 35G, and a plurality of third sub-pixels 35B; the first sub-pixel 35R can be a red sub-pixel, that is, the first sub-pixel 35R can emit red light; the second sub-pixel 35G can be a green sub-pixel, that is, the second sub-pixel 35G can emit green light; the third sub-pixel 35B can be a blue sub-pixel, that is, the third sub-pixel 35B can emit blue light. Of course, in some other example embodiments of the present disclosure, the display backplane 10 can include a plurality of fourth sub-pixels, which can be white sub-pixels, that is, the fourth sub-pixels can emit white light; it can also be that the first sub-pixel 35R, the second sub-pixel 35G, and the third sub-pixel 35B all emit white light, and then filtered through the red filter layer, the green filter layer, and the blue filter layer.

[0086] The light-emitting layer group 33 can include a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer, and an electron injection layer which are sequentially stacked, the hole injection layer is in contact with the first electrode 31, and the electron injection layer is in contact with the second electrode 34. Of course, in some other example embodiments of the present disclosure, the light-emitting layer group 33 can only include a hole transport layer, a light-emitting layer, and an electron transport layer, and the light-emitting layer group 33 can also be other structures, and the specific structure can be set as needed.

[0087] Holes are injected into the organic light-emitting layer from the side of the first electrode 31, and electrons are injected into the organic light-emitting layer from the side of the second electrode 34, and finally the holes and the electrons recombine in the organic light-emitting layer to generate excitons, and when the generated excitons relax from the excited state to the ground state, the OLED emits visible light.

[0088] The display back plate 10 can further include an encapsulation layer group 4 disposed on the side of the light-emitting substrate 3 away from the substrate substrate 1. For example, the encapsulation layer group 4 can include a first inorganic layer, an organic layer, and a second inorganic layer. The first inorganic layer is disposed on the side of the second electrode 34 away from the substrate substrate 1. The first inorganic layer can be made of silicon nitride (SiNx), silicon oxynitride (SiNO), or the like. The first inorganic layer can be formed on the side of the second electrode 34 away from the substrate substrate 1 by chemical vapor deposition (CVD). The organic layer is disposed on the side of the first inorganic layer away from the substrate substrate 1. The organic layer can be made of an organic material such as acrylic or epoxy. The second inorganic layer is disposed on the side of the organic layer away from the substrate substrate 1. The second inorganic layer can be made of silicon nitride (SiNx), silicon oxynitride (SiNO), or the like. The second inorganic layer can be formed on the side of the organic layer away from the substrate substrate 1 by chemical vapor deposition (CVD). The light-emitting layer group 33 can be encapsulated by the encapsulation layer group 4 to prevent corrosion by water / oxygen in the air.

[0089] In some example embodiments of the present disclosure, referring to FIG. 2, the display back plate 10 can further include a touch layer group 5 disposed on the side of the encapsulation layer group 4 away from the substrate substrate 1. The touch layer group 5 enables the display panel to realize a touch function.

[0090] The touch layer group 5 can include a base layer 51, a second touch functional layer 52, a touch insulating layer 53, and a first touch functional layer 54. The base layer 51 is disposed on the side of the encapsulation layer group 4 away from the substrate substrate 1. The second touch functional layer 52 is disposed on the side of the base layer 51 away from the substrate substrate 1. The touch insulating layer 53 is disposed on the side of the second touch functional layer 52 away from the substrate substrate 1. The first touch functional layer 54 is disposed on the side of the touch insulating layer 53 away from the substrate substrate 1. The touch layer group 5 can further include a protective layer 55 disposed on the side of the first touch functional layer 54 away from the substrate substrate 1. The protective layer 55 can protect the first touch functional layer 54.

[0091] The first touch function layer 54 is arranged in a grid shape, and one grid can correspond to one sub-pixel 35, so as to avoid the first touch function layer 54 from shielding the forward light emission of each sub-pixel 35. Referring to FIG. 1, the first touch function layer 54 can include a touch electrode 542 and a dummy part 541, and the touch electrode 542 and the dummy part 541 can be disconnected through a broken line. The dummy part 541 is provided with a via hole 5411, and a projection of the via hole 5411 on the display backboard 10 covers the first sub-pixel 35R. For example, an edge line of the projection of the via hole 5411 on the display backboard 10 can coincide with an edge line of the first sub-pixel 35R, or an area of the projection of the via hole 5411 on the display backboard 10 can be greater than an area of the first sub-pixel 35R. In this way, the dummy part 541 is arranged to avoid shielding the forward light emission of the first sub-pixel 35R.

[0092] Referring to FIG. 1, a light adjusting layer 6 is arranged on a side of the first touch function layer 54 away from the display backboard 10, and the light adjusting layer 6 is provided with a first recessed part 61, a second recessed part 62, and a third recessed part 63. The light adjusting layer 6 covers the touch electrode 542, and the light adjusting layer 6 can replace the protective layer 55 to play a role of protecting the first touch function layer 54.

[0093] The first recessed part 61 is in one-to-one correspondence with the first sub-pixel 35R. Specifically, the number of the first recessed part 61 is the same as the number of the first sub-pixel 35R, and the shape of the first recessed part 61 is the same as the shape of the first sub-pixel 35R. For example, the first sub-pixel 35R is arranged in a circular shape, and the first recessed part 61 is also arranged in a circular shape; the first sub-pixel 35R is arranged in a rectangular shape, and the first recessed part 61 is also arranged in a rectangular shape; of course, in other example embodiments of the present disclosure, the shape of the first sub-pixel 35R and the shape of the first recessed part 61 can also be other shapes, which are not described one by one here.

[0094] The projection of the first recessed part 61 on the display backboard 10 at least partially overlaps the first sub-pixel 35R. For example, an edge line of the projection of the first recessed part 61 on the display backboard 10 can coincide with an edge line of the first sub-pixel 35R, or the projection of the first recessed part 61 on the display backboard 10 can cover and be greater than the first sub-pixel 35R. In these two cases, the projection of the first recessed part 61 on the display backboard 10 completely covers the first sub-pixel 35R.

[0095] Of course, in some other example embodiments of the present disclosure, a part of the projection of the first recessed part 61 on the display backboard 10 can overlap a part of the first sub-pixel 35R.

[0096] The first recessed portion 61 can include a side wall and a bottom wall, the bottom wall being parallel to the display surface, and the side wall intersecting the display surface. It should be noted that since the side wall of the first recessed portion 61 is inclined, when compared with the first sub-pixel 35R, the range of the orthographic projection of the first recessed portion 61 on the display backboard 10 refers to the orthographic projection of the side of the first recessed portion 61 close to the display backboard 10 (the bottom wall) on the display backboard 10, that is, the orthographic projection of the bottom wall of the first recessed portion 61 on the display backboard 10 at least partially overlaps the first sub-pixel 35R; so as to ensure that in the case that the orthographic projection of the first recessed portion 61 on the display backboard 10 completely covers the first sub-pixel 35R, the side wall of the first recessed portion 61 does not overlap the first sub-pixel 35R, further ensuring the converging effect on the light and the uniformity of the light.

[0097] The second recessed portion 62 is one-to-one corresponding to the second sub-pixel 35G, specifically, the number of the second recessed portion 62 is the same as the number of the second sub-pixel 35G, and the shape of the second recessed portion 62 is the same as the shape of the second sub-pixel 35G, for example, the second sub-pixel 35G is set to be circular, and the second recessed portion 62 is also set to be circular; the second sub-pixel 35G is set to be rectangular, and the second recessed portion 62 is also set to be rectangular; of course, in other example embodiments of the present disclosure, the shape of the second sub-pixel 35G and the shape of the second recessed portion 62 can also be other shapes, which are not described one by one here.

[0098] The orthographic projection of the second recessed portion 62 on the display backboard 10 at least partially overlaps the second sub-pixel 35G, for example, the edge line of the orthographic projection of the second recessed portion 62 on the display backboard 10 can coincide with the edge line of the second sub-pixel 35G, or the orthographic projection of the second recessed portion 62 on the display backboard 10 can cover and be larger than the second sub-pixel 35G, both of which make the orthographic projection of the second recessed portion 62 on the display backboard 10 completely cover the second sub-pixel 35G.

[0099] Of course, in some other example embodiments of the present disclosure, the orthographic projection of the second recessed portion 62 on the display backboard 10 can also partially overlap the second sub-pixel 35G.

[0100] The second recessed portion 62 can include a side wall and a bottom wall, the bottom wall being parallel to the display surface, and the side wall intersecting the display surface. It should be noted that since the side wall of the second recessed portion 62 is inclined, when compared with the second sub-pixel 35G, the range of the orthographic projection of the second recessed portion 62 on the display backboard 10 refers to the orthographic projection of the side of the second recessed portion 62 close to the display backboard 10 (the bottom wall) on the display backboard 10, that is, the orthographic projection of the bottom wall of the second recessed portion 62 on the display backboard 10 at least partially overlaps with the second sub-pixel 35G; so as to ensure that in the case that the orthographic projection of the second recessed portion 62 on the display backboard 10 completely covers the second sub-pixel 35G, the side wall of the second recessed portion 62 does not overlap with the second sub-pixel 35G, further ensuring the converging effect on the light and the uniformity of the light.

[0101] The third recessed portion 63 is in one-to-one correspondence with the third sub-pixel 35B, specifically, the number of the third recessed portion 63 is the same as the number of the third sub-pixel 35B, and the shape of the third recessed portion 63 is the same as the shape of the third sub-pixel 35B, for example, the third sub-pixel 35B is set to be circular, and the third recessed portion 63 is also set to be circular; the third sub-pixel 35B is set to be rectangular, and the third recessed portion 63 is also set to be rectangular; of course, in other example embodiments of the present disclosure, the shape of the third sub-pixel 35B and the shape of the third recessed portion 63 can also be other shapes, which are not described one by one here.

[0102] The orthographic projection of the third recessed portion 63 on the display backboard 10 at least partially overlaps with the third sub-pixel 35B, for example, the edge line of the orthographic projection of the third recessed portion 63 on the display backboard 10 can coincide with the edge line of the third sub-pixel 35B, or the orthographic projection of the third recessed portion 63 on the display backboard 10 can cover and be larger than the third sub-pixel 35B, both of which make the orthographic projection of the third recessed portion 63 on the display backboard 10 completely cover the third sub-pixel 35B.

[0103] Of course, in some other example embodiments of the present disclosure, the orthographic projection of the third recessed portion 63 on the display backboard 10 can also partially overlap with the third sub-pixel 35B.

[0104] The third recessed portion 63 can include a side wall and a bottom wall, the bottom wall being parallel to the display surface, and the side wall intersecting the display surface. It should be noted that since the side wall of the third recessed portion 63 is inclined, when compared with the third sub-pixel 35B, the range of the orthographic projection of the third recessed portion 63 on the display back plate 10 refers to the orthographic projection of the side of the third recessed portion 63 close to the display back plate 10 (the bottom wall) on the display back plate 10, that is, the orthographic projection of the bottom wall of the third recessed portion 63 on the display back plate 10 at least partially overlaps the third sub-pixel 35B; so as to ensure that in the case that the orthographic projection of the third recessed portion 63 on the display back plate 10 completely covers the third sub-pixel 35B, the side wall of the third recessed portion 63 does not overlap the third sub-pixel 35B, further ensuring the converging effect on the light rays and the uniformity of the light rays.

[0105] Referring to FIG. 1, at least part of the first filter layer 7R is located in the first recessed portion 61, for example, part of the first filter layer 7R can be located in the first recessed portion 61, or the first filter layer 7R can be entirely located in the first recessed portion 61. Generally, the thickness of the first filter layer 7R can be equal to the depth of the first recessed portion 61, so as to fill the first recessed portion 61. The first filter layer 7R can be a red filter layer, that is, the first filter layer 7R can only pass red light.

[0106] The refractive index of the first filter layer 7R is greater than the refractive index of the light adjusting layer 6. Specifically, the refractive index of the first filter layer 7R is greater than or equal to 1.65 and less than or equal to 1.75, for example, the refractive index of the first filter layer 7R can be 1.68, 1.7, 1.73, etc. The refractive index of the light adjusting layer 6 is greater than or equal to 1.45 and less than or equal to 1.55, for example, the refractive index of the light adjusting layer 6 is 1.47, 1.5, 1.53, etc.

[0107] Referring to FIG. 1, the light rays from the first filter layer 7R to the light adjusting layer 6 are from a denser medium to a less dense medium, so the light rays are prone to total reflection at the interface between the first filter layer 7R and the side wall of the first recessed portion 61. The side wall of the first recessed portion 61 can cause the total reflection of the inclined outgoing light to form total reflection light, change the angle of the outgoing light, and thus make the total reflection light more convergent, so as to be emitted from the front of the display panel, improve the light emission efficiency of the front of the display panel, reduce the light emission efficiency of the side of the display panel, and increase the privacy effect.

[0108] Moreover, in the case that the ambient light is relatively strong, only red light is emitted into the display panel after the ambient light is filtered by the first filter layer 7R, and only red light is emitted from the display panel after the reflection of the display panel, so as to achieve the purpose of anti-glare.

[0109] At least part of the second filter layer 7G is located in the second recess 62, for example, part of the second filter layer 7G can be located in the second recess 62, or the entire second filter layer 7G can be located in the second recess 62. Generally, the thickness of the second filter layer 7G can be equal to the depth of the second recess 62, and the second recess 62 is filled. The second filter layer 7G can be a green filter layer, that is, the second filter layer 7G can only pass green light.

[0110] The refractive index of the second filter layer 7G is greater than the refractive index of the light adjusting layer 6. Specifically, the refractive index of the second filter layer 7G is greater than or equal to 1.55 and less than or equal to 1.65, for example, the refractive index of the second filter layer 7G can be 1.58, 1.6, 1.62, etc.

[0111] Referring to FIG. 1, the light from the second filter layer 7G to the light adjusting layer 6 is from a light-dense medium to a light-lean medium, so the light is easily totally reflected at the interface between the second filter layer 7G and the side wall of the second recess 62. The side wall of the second recess 62 causes the tilted outgoing light to be totally reflected to form totally reflected light, changes the angle of the outgoing light, so that the totally reflected light is more concentrated, and is emitted from the front of the display panel, thereby improving the light emission efficiency of the front of the display panel, reducing the light emission efficiency of the side of the display panel, and increasing the privacy effect.

[0112] Moreover, in the case of strong ambient light, only green light is emitted into the display panel after the ambient light is filtered by the second filter layer 7G, and after reflection in the display panel, only green light is emitted from the display panel, thereby achieving the purpose of anti-glare.

[0113] At least part of the third filter layer 7B is located in the third recess 63, for example, part of the third filter layer 7B can be located in the third recess 63, or the entire third filter layer 7B can be located in the third recess 63. Generally, the thickness of the third filter layer 7B can be equal to the depth of the third recess 63, and the third recess 63 is filled. The third filter layer 7B can be a blue filter layer, that is, the third filter layer 7B can only pass blue light.

[0114] The refractive index of the third filter layer 7B is greater than the refractive index of the light adjusting layer 6. Specifically, the refractive index of the third filter layer 7B is greater than or equal to 1.55 and less than or equal to 1.65, for example, the refractive index of the third filter layer 7B can be 1.58, 1.6, 1.62, etc.

[0115] Referring to FIG. 1, light rays are emitted from the third filter layer 7B to the light adjusting layer 6, which is from a light-dense medium to a light-lean medium. Therefore, total reflection easily occurs at the interface between the third filter layer 7B and the sidewall of the third recessed portion 63, the sidewall of the third recessed portion 63 causes the total reflection of the inclined outgoing light to form the total reflection light, changes the angle of the outgoing light, and thus the total reflection light is more convergent, is emitted from the front of the display panel, improves the light emission efficiency of the front of the display panel, reduces the light emission efficiency of the side of the display panel, and increases the privacy effect.

[0116] Moreover, in the case that the ambient light is strong, only blue light is emitted into the display panel after the ambient light is filtered by the third filter layer 7B. After reflection in the display panel, only blue light is emitted from the display panel, thereby achieving the purpose of anti-glare.

[0117] However, since the refractive index of the second filter layer 7G is less than that of the first filter layer 7R, and the refractive index of the third filter layer 7B is less than that of the first filter layer 7R, the critical angle of total reflection at the interface between the first filter layer 7R and the light adjusting layer 6 is smaller, and more light is totally reflected. The critical angle of total reflection at the interface between the second filter layer 7G and the light adjusting layer 6 and the interface between the third filter layer 7B and the light adjusting layer 6 is larger, and less light is totally reflected. Thus, the light emission efficiency gain of sub-pixels 35 of different colors is different, thereby causing color cast.

[0118] In the present example embodiment, referring to FIG. 1, the dummy portion 541 extends to at least the sidewall of the first recessed portion 61. For example, the dummy portion 541 can extend to the sidewall of the first recessed portion 61 and be flush with the sidewall of the first recessed portion 61. In this way, part of the sidewall of the first recessed portion 61 is occupied by the dummy portion 541 and cannot be totally reflected, thereby reducing the light that is totally reflected at the interface between the first filter layer 7R and the light adjusting layer 6, further reducing the light emission efficiency of the first sub-pixel 35R, and reducing or even avoiding color cast caused by the different light emission efficiency gains of sub-pixels 35 of different colors.

[0119] Of course, the dummy portion 541 can also extend to the sidewall of the first recessed portion 61 and protrude from the sidewall of the first recessed portion 61. In this way, part of the sidewall of the first recessed portion 61 is occupied by the dummy portion 541 and cannot be totally reflected, thereby reducing the light that is totally reflected at the interface between the first filter layer 7R and the light adjusting layer 6, further reducing the light emission efficiency of the first sub-pixel 35R, and reducing or even avoiding color cast caused by the different light emission efficiency gains of sub-pixels 35 of different colors. Moreover, the dummy portion 541 can shield the light emitted from the first sub-pixel 35R, further reduce the light emission efficiency of the first sub-pixel 35R, and reduce or even avoid color cast caused by the different light emission efficiency gains of sub-pixels 35 of different colors.

[0120] Specifically, referring to FIG. 1, the distance D1 between the edge line of the orthogonal projection of the via hole 5411 on the display backplane 10 and the edge line of the first sub-pixel 35R is greater than or equal to 0 and less than or equal to 1 microns, for example, the distance D1 between the edge line of the orthogonal projection of the via hole 5411 on the display backplane 10 and the edge line of the first sub-pixel 35R can be 0.1 microns, 0.2 microns, 0.3 microns, 0.4 microns, 0.5 microns, 0.6 microns, 0.7 microns, 0.8 microns, 0.9 microns, and the like.

[0121] If the distance D1 between the edge line of the orthogonal projection of the via hole 5411 on the display backplane 10 and the edge line of the first sub-pixel 35R is too large, so that the dummy part 541 cannot extend to the side wall of the first recessed part 61, that is, part of the side wall of the first recessed part 61 cannot be occupied by the dummy part 541, the light that produces total reflection at the interface of the first filter layer 7R and the light adjusting layer 6 cannot be reduced, and the light extraction efficiency of the first sub-pixel 35R cannot be reduced. The above numerical range ensures that part of the side wall of the first recessed part 61 is occupied by the dummy part 541, which cannot produce total reflection, thereby reducing the light that produces total reflection at the interface of the first filter layer 7R and the light adjusting layer 6, and further reducing the light extraction efficiency of the first sub-pixel 35R.

[0122] The dummy part 541 at least extends to the side wall of the first recessed part 61, which can also be said that the orthogonal projection of the via hole 5411 on the display backplane 10 is located within the orthogonal projection of the first recessed part 61 on the display backplane 10. Specifically, the distance D2 between the edge line of the orthogonal projection of the via hole 5411 on the display backplane 10 and the edge line of the orthogonal projection of the first recessed part 61 on the display backplane 10 is greater than or equal to 0 and less than or equal to 2 microns, for example, the distance D2 between the edge line of the orthogonal projection of the via hole 5411 on the display backplane 10 and the edge line of the orthogonal projection of the first recessed part 61 on the display backplane 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 microns, 1.2 microns, 1.5 microns, 1.7 microns, and the like.

[0123] If the distance D2 between the edge line of the orthogonal projection of the via hole 5411 on the display backplane 10 and the edge line of the orthogonal projection of the first recessed part 61 on the display backplane 10 is too large, so that the size of the dummy part 541 protruding from the side wall of the first recessed part 61 is too large, the dummy part 541 is easy to block the first sub-pixel 35R, resulting in excessive reduction of the light extraction efficiency of the first sub-pixel 35R. The above numerical range ensures that the dummy part 541 will not block the first sub-pixel 35R, and ensures the light extraction efficiency of the first sub-pixel 35R.

[0124] In the example embodiment, the dummy portion 541 can be annular, and the annular width of the dummy portion 541 is greater than or equal to 3 microns and less than or equal to 4 microns, for example, the annular width of the dummy portion 541 can be 3.1 microns, 3.2 microns, 3.3 microns, 3.4 microns, 3.5 microns, 3.6 microns, 3.7 microns, 3.8 microns, 3.9 microns, etc.

[0125] If the annular width of the dummy portion 541 is too large, the dummy portion 541 is easy to be electrically connected with the touch electrode 542, which affects the touch signal.

[0126] If the annular width of the dummy portion 541 is too small, the dummy portion 541 is difficult to extend to the sidewall of the first recessed portion 61, that is, a part of the sidewall of the first recessed portion 61 cannot be occupied by the dummy portion 541, which cannot reduce the light that is totally reflected at the interface between the first filter layer 7R and the light adjusting layer 6, and cannot reduce the light extraction efficiency of the first sub-pixel 35R.

[0127] The above numerical range not only ensures that a part of the sidewall of the first recessed portion 61 is occupied by the dummy portion 541, which cannot be totally reflected, thereby reducing the light that is totally reflected at the interface between the first filter layer 7R and the light adjusting layer 6, and further reducing the light extraction efficiency of the first sub-pixel 35R; but also the dummy portion 541 will not be electrically connected with the touch electrode 542, which will not affect the touch signal.

[0128] It should be noted that the dummy portion 541 can be a closed annular structure, or can be an annular structure with a break, and the break can be one or two or more.

[0129] In the example embodiment, referring to FIG. 1, the thickness of the light adjusting layer 6 is greater than or equal to 1.5 microns and less than or equal to 2.5 microns, for example, the thickness of the light adjusting layer 6 can be 1.55 microns, 1.6 microns, 1.65 microns, 1.7 microns, 1.75 microns, 1.8 microns, 1.85 microns, 1.9 microns, 1.95 microns, 2 microns, 2.05 microns, 2.1 microns, 2.15 microns, 2.2 microns, 2.25 microns, 2.3 microns, 2.35 microns, 2.4 microns, 2.45 microns.

[0130] The first recessed portion 61 can be a through hole penetrating through the light adjusting layer 6, in this case, the depth of the first recessed portion 61 is equal to the thickness of the light adjusting layer 6, that is, the depth of the first recessed portion 61 is greater than or equal to 1.5 microns and less than or equal to 2.5 microns.

[0131] Generally, the first filter layer 7R at least needs to fill the first recessed portion 61, therefore, the thickness of the first filter layer 7R is greater than or equal to the depth of the first recessed portion 61.

[0132] The height of the sidewall of the first recess 61 in the second direction Y increases with the distance from the center of the first sub-pixel 35R in the first direction X, so that the first recess 61 forms a structure in which the opening part 321 is larger than the bottom part.

[0133] It should be noted that in the present disclosure, the second direction Y is perpendicular to the display surface of the display backboard 10, that is, the second direction Y is perpendicular to the surface of the display backboard 10 on which the light adjusting layer 6 is arranged; the first direction X is parallel to the display surface of the display backboard 10, that is, the first direction X is parallel to the surface of the display backboard 10 on which the light adjusting layer 6 is arranged.

[0134] In some example embodiments of the present disclosure, referring to FIG. 3, the sidewall of the first recess 61 can include a curved surface; the sidewall of the first recess 61 can include a first part 611, a second part 612 and a third part 613 connected smoothly in sequence, the first part 611 is closer to the display backboard 10 relative to the third part 613, the second part 612 is arranged as an inclined surface, the first part 611 and the third part 613 are arranged as arc surfaces, the first part 611 can be arranged as a concave shape, and the third part 613 can be arranged as a convex shape; specifically, the part of the sidewall of the first recess 61 close to the display backboard 10 can be a circular arc surface, the middle part of the sidewall of the first recess 61 can be arranged as an inclined surface, and the part of the sidewall of the first recess 61 away from the display backboard 10 can be a circular arc surface. In other example embodiments of the present disclosure, the sidewall of the first recess 61 can be arranged as an inclined surface, and the sidewall of the first recess 61 can only include the first part 611 and the third part 613 connected smoothly, but the sidewall of the first recess 61 is inclined overall.

[0135] The included angle β1 between the sidewall of the first recess 61 and the first reference plane is greater than or equal to 55° and less than or equal to 85°, for example, the included angle β1 between the sidewall of the first recess 61 and the first reference plane can be 55°, 57°, 60°, 63°, 65°, 68°, 70°, 72°, 75°, 77°, 80°, 82°, etc. The first reference plane is parallel to the surface of the display backboard 10 on which the light adjusting layer 6 is arranged.

[0136] If the included angle β1 between the sidewall of the first recess 61 and the first reference plane is too large, so that the sidewall of the first recess 61 is almost perpendicular to the display backboard 10, when the first filter layer 7R is filled into the first recess 61, it cannot be filled into the corner of the bottom wall of the first recess 61, that is, a gap is easily formed at the corner of the bottom wall of the first recess 61, and full reflection cannot be achieved well, the full reflection surface is lost, and the converging effect on the outgoing light cannot be achieved well.

[0137] If the included angle β1 between the sidewall of the first recessed portion 61 and the first reference plane is too small, such that the sidewall of the first recessed portion 61 is relatively flat, the angles of most of the emergent light rays emitted from the first sub-pixel 35R are greater than the included angle between the sidewall of the first recessed portion 61 and the first reference plane, such that the emergent light rays cannot be emitted to the sidewall of the first recessed portion 61, and thus total reflection cannot be achieved, and the converging effect on the emergent light rays cannot be achieved.

[0138] The above numerical range can ensure that the light rays with a large inclination angle emitted from the first sub-pixel 35R can achieve total reflection, thereby achieving the converging effect on the emergent light rays.

[0139] The second recessed portion 62 can be a through hole penetrating the light ray adjusting layer 6, in which case the depth of the second recessed portion 62 is equal to the thickness of the light ray adjusting layer 6, that is, the depth of the second recessed portion 62 is greater than or equal to 1.5 microns and less than or equal to 2.5 microns.

[0140] Generally, the second filter layer 7G at least needs to fill the second recessed portion 62, and thus the thickness of the second filter layer 7G is greater than or equal to the depth of the second recessed portion 62.

[0141] The height of the sidewall of the second recessed portion 62 in the second direction Y increases with the distance between the center of the second sub-pixel 35G and the first direction X, such that the second recessed portion 62 forms a structure in which the opening portion 321 is greater than the bottom portion.

[0142] In some example embodiments of the present disclosure, referring to FIG. 3, the sidewall of the second recessed portion 62 can include a curved surface; the sidewall of the second recessed portion 62 can include a fourth portion 621, a fifth portion 622, and a sixth portion 623 that are sequentially and smoothly connected, the fourth portion 621 is closer to the display backboard 10 than the sixth portion 623, the fifth portion 622 is provided as an inclined surface, the fourth portion 621 and the sixth portion 623 are provided as arc surfaces, the fourth portion 621 can be provided as a concave shape, and the sixth portion 623 can be provided as a protruding shape; specifically, the portion of the sidewall of the second recessed portion 62 close to the display backboard 10 can be a circular arc surface, the middle portion of the sidewall of the second recessed portion 62 can be provided as an inclined surface, and the portion of the sidewall of the second recessed portion 62 away from the display backboard 10 can be a circular arc surface. In other example embodiments of the present disclosure, the sidewall of the second recessed portion 62 can be provided as an inclined surface, and the sidewall of the second recessed portion 62 can only include the fourth portion 621 and the sixth portion 623 that are smoothly connected, but the sidewall of the second recessed portion 62 is generally provided as an inclined surface.

[0143] The included angle β2 between the sidewall of the second recessed portion 62 and the first reference plane is greater than or equal to 55° and less than or equal to 85°, for example, the included angle β2 between the sidewall of the second recessed portion 62 and the first reference plane can be 55°, 57°, 60°, 63°, 65°, 68°, 70°, 72°, 75°, 77°, 80°, 82°, and the like.

[0144] If the included angle β2 between the sidewall of the second recessed portion 62 and the first reference plane is too large, so that the sidewall of the second recessed portion 62 is almost perpendicular to the display back plate 10, when the second filter layer 7G is filled into the second recessed portion 62, it cannot be filled into the corner of the bottom wall of the second recessed portion 62, that is, a gap is easily formed at the corner of the bottom wall of the second recessed portion 62, and full reflection cannot be well achieved, the total reflection surface is lost, and the converging effect on the outgoing light cannot be well achieved.

[0145] If the included angle β2 between the sidewall of the second recessed portion 62 and the first reference plane is too small, so that the sidewall of the second recessed portion 62 is relatively flat, the angle of most of the outgoing light rays emitted from the second sub-pixel 35G is greater than the included angle between the sidewall of the second recessed portion 62 and the first reference plane, so that the outgoing light rays cannot be emitted to the sidewall of the second recessed portion 62, and full reflection cannot be achieved, and the converging effect on the outgoing light cannot be achieved.

[0146] The above numerical range can ensure that the light rays with a large inclination angle emitted from the second sub-pixel 35G can achieve full reflection, thereby achieving the converging effect on the outgoing light.

[0147] The third recessed portion 63 can be a through hole penetrating the light adjusting layer 6, in this case, the depth of the third recessed portion 63 is equal to the thickness of the light adjusting layer 6, that is, the depth of the third recessed portion 63 is greater than or equal to 1.5 microns and less than or equal to 2.5 microns.

[0148] Generally, the third filter layer 7B at least needs to fill the third recessed portion 63, therefore, the thickness of the third filter layer 7B is greater than or equal to the depth of the third recessed portion 63.

[0149] The height of the sidewall of the third recessed portion 63 in the second direction Y increases with the distance from the center of the third sub-pixel 35B in the first direction X, so that the third recessed portion 63 forms an opening portion 321 larger than the bottom portion.

[0150] In some example embodiments of the present disclosure, referring to FIG. 3, the sidewall of the third recessed portion 63 can include a curved surface; the sidewall of the third recessed portion 63 can include a seventh portion 631, an eighth portion 632 and a ninth portion 633 connected smoothly in sequence, the seventh portion 631 is closer to the display backplane 10 relative to the ninth portion 633, the eighth portion 632 is arranged as an inclined surface, the seventh portion 631 and the ninth portion 633 are arranged as arc surfaces, the seventh portion 631 can be arranged as a concave shape, and the ninth portion 633 can be arranged as a convex shape; specifically, the portion of the sidewall of the third recessed portion 63 close to the display backplane 10 can be a circular arc surface, the middle portion of the sidewall of the third recessed portion 63 can be arranged as an inclined surface, and the portion of the sidewall of the third recessed portion 63 away from the display backplane 10 can be a circular arc surface. In other example embodiments of the present disclosure, the sidewall of the third recessed portion 63 can be arranged as an inclined surface, and the sidewall of the third recessed portion 63 can only include the seventh portion 631 and the ninth portion 633 connected smoothly, but the sidewall of the third recessed portion 63 is generally arranged as an inclined surface.

[0151] The included angle β3 between the sidewall of the third recessed portion 63 and the first reference plane is greater than or equal to 55° and less than or equal to 85°, for example, the included angle β3 between the sidewall of the third recessed portion 63 and the first reference plane can be 55°, 57°, 60°, 63°, 65°, 68°, 70°, 72°, 75°, 77°, 80°, 82°, etc.

[0152] If the included angle β3 between the sidewall of the third recessed portion 63 and the first reference plane is too large, so that the sidewall of the third recessed portion 63 is almost perpendicular to the display backplane 10, when the third filter layer 7B fills into the third recessed portion 63, it cannot fill into the corner of the bottom wall of the third recessed portion 63, that is, a gap is easily formed at the corner of the bottom wall of the third recessed portion 63, and full reflection cannot be achieved well, the full reflection surface is lost, and the converging effect on the emitted light cannot be achieved well.

[0153] If the included angle β3 between the sidewall of the third recessed portion 63 and the first reference plane is too small, so that the sidewall of the third recessed portion 63 is relatively flat, and the angle of most of the emitted light emitted from the third sub-pixel 35B is greater than the included angle between the sidewall of the third recessed portion 63 and the first reference plane, so that the emitted light cannot be emitted to the sidewall of the third recessed portion 63, and full reflection cannot be achieved, and the converging effect on the emitted light cannot be achieved.

[0154] The above numerical range can ensure that the light with a large inclination angle emitted from the third sub-pixel 35B can achieve full reflection, thereby achieving the converging effect on the emitted light.

[0155] Referring to FIG. 4, the light adjusting layer 6 can further include a second island 67 and a third island 68. The second island 67 is located in the second recessed portion 62, such that the second recessed portion 62 is arranged in a ring shape. The shape of the second island 67 can be the same as the shape of the second sub-pixel 35G. For example, when the second sub-pixel 35G is arranged in a circular shape, the second island 67 is also arranged in a circular shape. When the second sub-pixel 35G is arranged in a rectangular shape, the second island 67 is also arranged in a rectangular shape. Of course, in other example embodiments of the present disclosure, the shape of the second sub-pixel 35G and the shape of the second island 67 can also be other shapes, which are not described one by one here.

[0156] When the light from the second filter layer 7G is incident on the light adjusting layer 6, the light is incident from a denser medium to a rarer medium. Therefore, total reflection is likely to occur at the interface between the second filter layer 7G and the sidewall of the second island 67. The sidewall of the second island 67 causes the tilted emergent light to be totally reflected to form totally reflected light, changes the angle of the emergent light, and thus makes the totally reflected light more convergent, so as to be emitted from the front of the display panel, thereby improving the light emission efficiency of the front of the display panel. That is, the second island 67 can increase the light participating in the total reflection, thereby improving the light emission efficiency of the second sub-pixel 35G and making up for the insufficient refractive index of the second filter layer 7G.

[0157] The third island 68 is located in the third recessed portion 63, such that the third recessed portion 63 is arranged in a ring shape. The shape of the third island 68 can be the same as the shape of the third sub-pixel 35B. For example, when the third sub-pixel 35B is arranged in a circular shape, the third island 68 is also arranged in a circular shape. When the third sub-pixel 35B is arranged in a rectangular shape, the third island 68 is also arranged in a rectangular shape. Of course, in other example embodiments of the present disclosure, the shape of the third sub-pixel 35B and the shape of the third island 68 can also be other shapes, which are not described one by one here.

[0158] When the light from the third filter layer 7B is incident on the light adjusting layer 6, the light is incident from a denser medium to a rarer medium. Therefore, total reflection is likely to occur at the interface between the third filter layer 7B and the sidewall of the third island 68. The sidewall of the third island 68 causes the tilted emergent light to be totally reflected to form totally reflected light, changes the angle of the emergent light, and thus makes the totally reflected light more convergent, so as to be emitted from the front of the display panel, thereby improving the light emission efficiency of the front of the display panel. That is, the third island 68 can increase the light participating in the total reflection, thereby improving the light emission efficiency of the third sub-pixel 35B and making up for the insufficient refractive index of the third filter layer 7B.

[0159] The height of the sidewall of the second island 67 in the second direction Y increases with the distance from the center of the second sub-pixel 35G in the first direction X, such that the second island 67 forms a structure in which the opening portion 321 is larger than the bottom portion.

[0160] In some example embodiments of the present disclosure, referring to FIG. 5, the sidewall of the second island 67 can include a curved surface; the sidewall of the second island 67 can include a first segment 671, a second segment 672 and a third segment 673 which are sequentially and smoothly connected, the first segment 671 is closer to the display backboard 10 relative to the third segment 673, the second segment 672 is arranged as an inclined surface, the first segment 671 and the third segment 673 are arranged as arc surfaces, the first segment 671 can be arranged as a concave surface, and the third segment 673 can be arranged as a convex surface; specifically, the portion of the sidewall of the second island 67 close to the display backboard 10 can be a circular arc surface, the middle portion of the sidewall of the second island 67 can be arranged as an inclined surface, and the portion of the sidewall of the second island 67 away from the display backboard 10 can be a circular arc surface. In other example embodiments of the present disclosure, the sidewall of the second island 67 can be arranged as an inclined surface, and the sidewall of the second island 67 can only include the first segment 671 and the third segment 673 which are smoothly connected, but the sidewall of the second island 67 is generally arranged as an inclined surface.

[0161] The included angle β4 between the sidewall of the second island 67 and the first reference plane is greater than or equal to 55° and less than or equal to 85°, for example, the included angle β4 between the sidewall of the second island 67 and the first reference plane can be 55°, 57°, 60°, 63°, 65°, 68°, 70°, 72°, 75°, 77°, 80°, 82°, etc.

[0162] If the included angle β4 between the sidewall of the second island 67 and the first reference plane is too large, so that the sidewall of the second island 67 is almost perpendicular to the display backboard 10, when the second filter layer 7G is filled into the second recessed portion 62, it cannot be filled into the corner of the bottom wall of the second recessed portion 62, i.e. a gap is easily formed at the corner of the bottom of the second island 67, and the total reflection cannot be well achieved, the total reflection surface is lost, and the converging effect on the emitted light cannot be well achieved.

[0163] If the included angle β4 between the sidewall of the second island 67 and the first reference plane is too small, so that the sidewall of the second island 67 is relatively flat, and the angle of most of the emitted light emitted from the second sub-pixel 35G is greater than the included angle between the sidewall of the second island 67 and the first reference plane, so that the emitted light cannot be emitted to the sidewall of the second island 67, and the total reflection and the converging effect on the emitted light cannot be achieved.

[0164] The above numerical range can ensure that the light with a large inclination angle emitted from the second sub-pixel 35G can achieve total reflection, thereby achieving the converging effect on the emitted light.

[0165] The height of the sidewall of the third island 68 in the second direction Y increases with the distance of the center of the third sub-pixel 35B in the first direction X, so that the third island 68 forms a structure with a larger opening portion 321 than a bottom portion.

[0166] In some example embodiments of the present disclosure, referring to FIG. 5, the sidewall of the third island 68 can include a curved surface; the sidewall of the third island 68 can include a fourth segment 681, a fifth segment 682 and a sixth segment 683 connected smoothly in sequence, the fourth segment 681 is closer to the display backplane 10 relative to the sixth segment 683, the fifth segment 682 is arranged as an inclined surface, the fourth segment 681 and the sixth segment 683 are arranged as arc surfaces, the fourth segment 681 can be arranged as a concave shape, and the sixth segment 683 can be arranged as a convex shape; specifically, the portion of the sidewall of the third island 68 close to the display backplane 10 can be a circular arc surface, the middle portion of the sidewall of the third island 68 can be arranged as an inclined surface, and the portion of the sidewall of the third island 68 away from the display backplane 10 can be a circular arc surface. In other example embodiments of the present disclosure, the sidewall of the third island 68 can be arranged as an inclined surface, and the sidewall of the third island 68 can only include the fourth segment 681 and the sixth segment 683 connected smoothly, but the sidewall of the third island 68 is inclined overall.

[0167] The included angle β5 between the sidewall of the third island 68 and the first reference plane is greater than or equal to 55° and less than or equal to 85°, for example, the included angle β5 between the sidewall of the third island 68 and the first reference plane can be 55°, 57°, 60°, 63°, 65°, 68°, 70°, 72°, 75°, 77°, 80°, 82°, etc. The first reference plane is parallel to the one side of the display backplane 10 on which the light adjusting layer 6 is arranged.

[0168] If the included angle β5 between the sidewall of the third island 68 and the first reference plane is too large, so that the sidewall of the third island 68 is almost perpendicular to the display backplane 10, when the third filter layer 7B fills into the third recessed portion 63, it cannot fill into the corner of the bottom wall of the third recessed portion 63, that is, a gap is easily formed at the corner of the bottom of the third island 68, and the total reflection cannot be well achieved, the total reflection surface is lost, and the converging effect on the emitted light cannot be well achieved.

[0169] If the included angle β5 between the sidewall of the third island 68 and the first reference plane is too small, so that the sidewall of the third island 68 is relatively flat, and the angle of most of the emitted light emitted from the third sub-pixel 35B is greater than the included angle between the sidewall of the third island 68 and the first reference plane, so that the emitted light cannot be emitted to the sidewall of the third island 68, and the total reflection and the converging effect on the emitted light cannot be achieved.

[0170] The above numerical range can ensure that the light with a large inclination angle emitted from the third sub-pixel 35B can achieve total reflection, thereby achieving the converging effect on the emitted light.

[0171] The ratio of the area of the second island 67 in orthographic projection on the display backplane 10 to the area of the second recess 62 in orthographic projection on the display backplane 10 is greater than or equal to 3% and less than or equal to 40%, for example, the ratio of the area of the second island 67 in orthographic projection on the display backplane 10 to the area of the second recess 62 in orthographic projection on the display backplane 10 can be 5%, 8%, 10%, 12%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 32%, 35%, 37%, and the like.

[0172] If the ratio of the area of the second island 67 in orthographic projection on the display backplane 10 to the area of the second recess 62 in orthographic projection on the display backplane 10 is too large, the occupying area of the second island 67 to the second recess 62 is too large, resulting in the area of the part of the second filter layer 7G with a relatively thin thickness being too large, affecting the light emission purity of the second sub-pixel 35G.

[0173] If the ratio of the area of the second island 67 in orthographic projection on the display backplane 10 to the area of the second recess 62 in orthographic projection on the display backplane 10 is too small, it is difficult to form the second island 67 in the above numerical range.

[0174] The above numerical range not only ensures the light emission purity of the second sub-pixel 35G, but also ensures that the second island 67 in the above numerical range is easy to form.

[0175] The ratio of the area of the third island 68 in orthographic projection on the display backplane 10 to the area of the third recess 63 in orthographic projection on the display backplane 10 is greater than or equal to 3% and less than or equal to 40%, for example, the ratio of the area of the third island 68 in orthographic projection on the display backplane 10 to the area of the third recess 63 in orthographic projection on the display backplane 10 can be 5%, 8%, 10%, 12%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 32%, 35%, 37%, and the like.

[0176] If the ratio of the area of the third island 68 in orthographic projection on the display backplane 10 to the area of the third recess 63 in orthographic projection on the display backplane 10 is too large, the occupying area of the third island 68 to the third recess 63 is too large, resulting in the area of the part of the third filter layer 7B with a relatively thin thickness being too large, affecting the light emission purity of the third sub-pixel 35B.

[0177] If the ratio of the area of the third island 68 in orthographic projection on the display backplane 10 to the area of the third recess 63 in orthographic projection on the display backplane 10 is too small, it is difficult to form the third island 68 in the above numerical range.

[0178] The above numerical range not only ensures the light emission purity of the third sub-pixel 35B, but also ensures that the third island 68 in the above numerical range is easy to form.

[0179] Specifically, the maximum size of the second island 67 in the orthographic projection on the display backplane 10 is greater than or equal to 3 microns and less than or equal to 5 microns, for example, the maximum size of the second island 67 in the orthographic projection on the display backplane 10 can be 3.2 microns, 3.5 microns, 3.7 microns, 4 microns, 4.3 microns, 4.5 microns, 4.8 microns, and the like.

[0180] The maximum size of the third island 68 in the orthographic projection on the display backplane 10 is greater than or equal to 3 microns and less than or equal to 5 microns, for example, the maximum size of the third island 68 in the orthographic projection on the display backplane 10 can be 3.2 microns, 3.5 microns, 3.7 microns, 4 microns, 4.3 microns, 4.5 microns, 4.8 microns, and the like.

[0181] Referring to FIG. 6, in some example embodiments of the present disclosure, the first recess 61 can be a blind hole provided on the light adjusting layer 6, that is, the light adjusting layer 6 is also provided at the bottom of the first recess 61, only the thickness of the light adjusting layer 6 at the first recess 61 is smaller than that of other parts; the second recess 62 and the third recess 63 can be through holes provided on the light adjusting layer 6.

[0182] In this way, the depth of the first recess 61 is smaller than the depth of the second recess 62, and the depth of the first recess 61 is smaller than the depth of the third recess 63, so that the width of the sidewall of the first recess 61 is smaller than the width of the sidewall of the second recess 62, and the width of the sidewall of the first recess 61 is smaller than the width of the sidewall of the third recess 63, thereby reducing the interface of the first recess 61 that causes total reflection, thereby reducing the light extraction efficiency of the first sub-pixel 35R, and the color deviation caused by the different gains of the light extraction efficiency of sub-pixels 35 of different colors can be reduced or even avoided.

[0183] The thickness of the light adjusting layer 6 at the first recess 61 is greater than or equal to 0.5 microns and less than or equal to 1 micron, that is, the thickness of the light adjusting layer 6 at the bottom of the blind hole is greater than or equal to 0.5 microns and less than or equal to 1 micron, for example, the thickness of the light adjusting layer 6 at the first recess 61 can be 0.55 microns, 0.6 microns, 0.65 microns, 0.7 microns, 0.75 microns, 0.8 microns, 0.85 microns, 0.9 microns, 0.95 microns, and the like.

[0184] If the thickness of the light adjusting layer 6 at the first recess 61 is too large, the depth of the first recess 61 is too small, which causes the interface of the first recess 61 that causes total reflection to be too small, which excessively reduces the light extraction efficiency of the first sub-pixel 35R, and also causes the color deviation caused by the different gains of the light extraction efficiency of sub-pixels 35 of different colors.

[0185] Conversely, if the thickness of the light adjusting layer 6 at the first recessed part 61 is too small, the depth of the first recessed part 61 is too large, the interface of the first recessed part 61 that causes total reflection is too large, the effect of reducing the light out efficiency of the first sub-pixel 35R is not large, and the effect of reducing or even avoiding the color deviation caused by the different gain of the light out efficiency of the sub-pixels 35 of different colors is not large.

[0186] The above numerical range ensures the reduction or even avoidance of the color deviation caused by the different gain of the light out efficiency of the sub-pixels 35 of different colors.

[0187] In addition, the thickness of the light adjusting layer 6 at the first recessed part 61 can also be equal to the thickness of the dummy part 541, and the thickness of the light adjusting layer 6 at the first recessed part 61 can also be smaller than the thickness of the dummy part 541.

[0188] Referring to FIG. 1, FIG. 4, and FIG. 6, in some example embodiments of the present disclosure, the display panel can further include a light shielding layer 8 and a second planarization layer 9. The light shielding layer 8 is arranged on the side of the light adjusting layer 6 away from the display back plate 10, and the light shielding layer 8 does not cover the side walls of the first recessed part 61, the second recessed part 62, and the third recessed part 63, that is, the light shielding layer 8 is arranged on the top surface of the light adjusting layer 6 away from the display back plate 10, so as to avoid the light shielding layer 8 affecting the light out efficiency of each sub-pixel 35. The light shielding layer 8 is provided with a first via hole 81, a second via hole 82, and a third via hole 83; the orthographic projection of the first via hole 81 on the display back plate 10 covers the first sub-pixel 35R, and the area of the orthographic projection of the first via hole 81 on the display back plate 10 is greater than the area of the first sub-pixel 35R; the orthographic projection of the second via hole 82 on the display back plate 10 covers the second sub-pixel 35G, and the area of the orthographic projection of the second via hole 82 on the display back plate 10 is greater than the area of the second sub-pixel 35G; the orthographic projection of the third via hole 83 on the display back plate 10 covers the third sub-pixel 35B, and the area of the orthographic projection of the third via hole 83 on the display back plate 10 is greater than the area of the third sub-pixel 35B. In this way, the light shielding layer 8 avoids shielding the normal light out efficiency of the first sub-pixel 35R, the second sub-pixel 35G, and the third sub-pixel 35B.

[0189] The second planarization layer 9 is arranged on the side of the light shielding layer 8 away from the display back plate 10, and the display panel can be protected and planarized through the second planarization layer 9, which is beneficial to subsequent bonding with the cover plate. The material of the second planarization layer 9 can be resin, and the refractive index of the second planarization layer 9 can be smaller than the refractive index of the third filter layer 7B.

[0190] The thickness of the light shielding layer 8 is greater than or equal to 1 micrometer and less than or equal to 2 micrometers, for example, the thickness of the light shielding layer 8 can be 1.2 micrometers, 1.4 micrometers, 1.5 micrometers, 1.6 micrometers, 1.8 micrometers, and the like.

[0191] Referring to FIG. 1, FIG. 4 and FIG. 6, the first via hole 81, the second via hole 82 and the third via hole 83 are arranged at intervals; the first filter layer 7R is located in the first via hole 81, the second filter layer 7G is located in the second via hole 82, and the third filter layer 7B is located in the third via hole 83.

[0192] The interval between the hole wall of the first via hole 81 and the first filter layer 7R is greater than or equal to 0 and less than or equal to 2 microns, for example, the interval between the hole wall of the first via hole 81 and the first filter layer 7R can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.4 microns, 1.5 microns, 1.6 microns, 1.8 microns, etc. The interval between the hole wall of the second via hole 82 and the second filter layer 7G is greater than or equal to 0 and less than or equal to 2 microns, for example, the interval between the hole wall of the second via hole 82 and the second filter layer 7G can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.4 microns, 1.5 microns, 1.6 microns, 1.8 microns, etc. The interval between the hole wall of the third via hole 83 and the third filter layer 7B is greater than or equal to 0 and less than or equal to 2 microns, for example, the interval between the hole wall of the third via hole 83 and the third filter layer 7B can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.4 microns, 1.5 microns, 1.6 microns, 1.8 microns, etc.

[0193] If the interval between the hole wall of the first via hole 81 and the first filter layer 7R is too large, the interval between the hole wall of the second via hole 82 and the second filter layer 7G is too large, and the interval between the hole wall of the third via hole 83 and the third filter layer 7B is too large, it will cause the area of the light shielding layer 8 to be too small, affecting the light shielding effect. The above numerical range can ensure the light shielding effect of the light shielding layer 8.

[0194] In the preparation process, the light shielding layer 8 can be prepared first, and then the first filter layer 7R, the second filter layer 7G and the third filter layer 7B can be prepared.

[0195] Furthermore, part of the first filter layer 7R, the second filter layer 7G and the third filter layer 7B extends to the side of the light adjusting layer 6 away from the display backboard 10 and does not overlap; that is, the first filter layer 7R is not only arranged in the first recessed part 61, but also arranged on the side of the light adjusting layer 6 away from the display backboard 10 around the first recessed part 61; the second filter layer 7G is not only arranged in the second recessed part 62, but also arranged on the side of the light adjusting layer 6 away from the display backboard 10 around the second recessed part 62; the third filter layer 7B is not only arranged in the third recessed part 63, but also arranged on the side of the light adjusting layer 6 away from the display backboard 10 around the third recessed part 63.

[0196] In this way, the first filter layer 7R fills the first recessed portion 61, the second filter layer 7G fills the second recessed portion 62, and the third filter layer 7B fills the third recessed portion 63, thereby ensuring the filtering effect and ensuring the color gamut of the display panel.

[0197] Specifically, the ring width of the overlapping portion of the first filter layer 7R and the light adjusting layer 6 is greater than or equal to 0 and less than or equal to 2 microns, for example, the ring width of the overlapping portion of the first filter layer 7R and the light adjusting layer 6 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc.

[0198] The ring width of the overlapping portion of the second filter layer 7G and the light adjusting layer 6 is greater than or equal to 0 and less than or equal to 2 microns, for example, the ring width of the overlapping portion of the second filter layer 7G and the light adjusting layer 6 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc.

[0199] The ring width of the overlapping portion of the third filter layer 7B and the light adjusting layer 6 is greater than or equal to 0 and less than or equal to 2 microns, for example, the ring width of the overlapping portion of the third filter layer 7B and the light adjusting layer 6 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc.

[0200] The arrangement of the light shielding layer 8 is not limited to the above description, for example, referring to FIGS. 7-12, in some example embodiments of the present disclosure, a fourth recessed portion 64, a fifth recessed portion 65, and a sixth recessed portion 66 are arranged on the light adjusting layer 6, the fourth recessed portion 64, the fifth recessed portion 65, and the sixth recessed portion 66 are all arranged in a ring shape, the fourth recessed portion 64 surrounds the first recessed portion 61, the fifth recessed portion 65 surrounds the second recessed portion 62, and the sixth recessed portion 66 surrounds the third recessed portion 63. The fourth recessed portion 64, the fifth recessed portion 65, and the sixth recessed portion 66 can be ring-shaped through holes arranged on the light adjusting layer 6, or can be ring-shaped blind holes arranged on the light adjusting layer 6.

[0201] Moreover, referring to Figs. 7-9, the light-shielding layer 8 is also arranged in the fourth recessed portion 64, the fifth recessed portion 65 and the sixth recessed portion 66. Specifically, the light-shielding layer 8 is arranged on the side of the light-adjusting layer 6 facing away from the display back plate 10 between the fourth recessed portion 64 and the fifth recessed portion 65, between the fifth recessed portion 65 and the sixth recessed portion 66, and between the fourth recessed portion 64 and the sixth recessed portion 66, and the light-shielding layer 8 extends into the fourth recessed portion 64, the fifth recessed portion 65 and the sixth recessed portion 66.

[0202] In addition, referring to Figs. 10-12, the light-shielding layer 8 is also arranged in the fourth recessed portion 64, the fifth recessed portion 65 and the sixth recessed portion 66, and the first filter layer 7R is also arranged in the fourth recessed portion 64, the second filter layer 7G is also arranged in the fifth recessed portion 65, and the third filter layer 7B is also arranged in the sixth recessed portion 66. Specifically, the light-shielding layer 8 is arranged on the side of the light-adjusting layer 6 facing away from the display back plate 10 between the fourth recessed portion 64 and the fifth recessed portion 65, between the fifth recessed portion 65 and the sixth recessed portion 66, and between the fourth recessed portion 64 and the sixth recessed portion 66, and the light-shielding layer 8 extends into the fourth recessed portion 64, the fifth recessed portion 65 and the sixth recessed portion 66. Moreover, the first filter layer 7R also extends into the fourth recessed portion 64, the second filter layer 7G also extends into the fifth recessed portion 65, and the third filter layer 7B also extends into the sixth recessed portion 66.

[0203] In this way, the part of the light-shielding layer 8 close to the first filter layer 7R, the second filter layer 7G and the third filter layer 7B has a lower height, so that the light-shielding layer 8 does not shield the light with a large inclination angle from being emitted, i.e., the light with a large inclination angle can be emitted, thereby reducing the side viewing angle luminance decay and improving the viewable viewing angle range of the display panel.

[0204] Referring to FIGS. 13-15, in some example embodiments of the present disclosure, a portion of the first filter layer 7R, the second filter layer 7G, and the third filter layer 7B extends to the side of the light adjusting layer 6 facing away from the display backplane 10 and does not overlap, for example, the first filter layer 7R, the second filter layer 7G, and the third filter layer 7B can extend to the side of the light adjusting layer 6 facing away from the display backplane 10, but a gap is provided between the adjacent first filter layer 7R and the second filter layer 7G or the first filter layer 7R and the second filter layer 7G are just connected, and a gap is provided between the adjacent second filter layer 7G and the third filter layer 7B or the second filter layer 7G and the third filter layer 7B are just connected.

[0205] In this case, the light shielding layer 8 is provided at least on the side of the first filter layer 7R, the second filter layer 7G, and the third filter layer 7B facing away from the display backplane 10. For example, in the case where a gap is provided between the adjacent first filter layer 7R and the second filter layer 7G, a portion of the light shielding layer 8 is provided in the gap so that this portion of the light shielding layer 8 is located on the side of the light adjusting layer 6 facing away from the display backplane 10, and another portion of the light shielding layer 8 is provided on the side of the first filter layer 7R and the second filter layer 7G facing away from the display backplane 10; in the case where the first filter layer 7R and the second filter layer 7G are just connected, the light shielding layer 8 is provided on the side of the first filter layer 7R and the second filter layer 7G facing away from the display backplane 10. Similarly, in the case where a gap is provided between the adjacent second filter layer 7G and the third filter layer 7B, a portion of the light shielding layer 8 is provided in the gap so that this portion of the light shielding layer 8 is located on the side of the light adjusting layer 6 facing away from the display backplane 10, and another portion of the light shielding layer 8 is provided on the side of the second filter layer 7G and the third filter layer 7B facing away from the display backplane 10; in the case where the second filter layer 7G and the third filter layer 7B are just connected, the light shielding layer 8 is provided on the side of the second filter layer 7G and the third filter layer 7B facing away from the display backplane 10. In the case where a gap is provided between the adjacent first filter layer 7R and the third filter layer 7B, a portion of the light shielding layer 8 is provided in the gap so that this portion of the light shielding layer 8 is located on the side of the light adjusting layer 6 facing away from the display backplane 10, and another portion of the light shielding layer 8 is provided on the side of the first filter layer 7R and the third filter layer 7B facing away from the display backplane 10; in the case where the first filter layer 7R and the third filter layer 7B are just connected, the light shielding layer 8 is provided on the side of the first filter layer 7R and the third filter layer 7B facing away from the display backplane 10.

[0206] In the preparation process, the first filter layer 7R, the second filter layer 7G, and the third filter layer 7B can be prepared first, and then the light shielding layer 8 is prepared. In this case, the process precision required by the first filter layer 7R, the second filter layer 7G, and the third filter layer 7B can be reduced, thereby reducing the cost and improving the efficiency.

[0207] Referring to FIGS. 16-18, in some example embodiments of the present disclosure, the light shielding layer 8 is arranged on the side of the light adjusting layer 6 away from the display backplate 10, and the light shielding layer 8 does not cover the side walls of the first recessed portion 61, the second recessed portion 62, and the third recessed portion 63, that is, the light shielding layer 8 is arranged on the top surface of the light adjusting layer 6 away from the display backplate 10, so as to avoid the light shielding layer 8 affecting the light extraction efficiency of each sub-pixel 35.

[0208] Specifically, the distance between the edge line of the orthographic projection of the first via hole 81 on the display backplate 10 and the edge line of the orthographic projection of the first recessed portion 61 on the display backplate 10 is greater than or equal to 1 micrometer and less than or equal to 3 micrometers, for example, the distance between the edge line of the orthographic projection of the first via hole 81 on the display backplate 10 and the edge line of the orthographic projection of the first recessed portion 61 on the display backplate 10 can be 1.2 micrometers, 1.5 micrometers, 1.7 micrometers, 2 micrometers, 2.3 micrometers, 2.5 micrometers, 2.8 micrometers, and the like.

[0209] The distance between the edge line of the orthographic projection of the second via hole 82 on the display backplate 10 and the edge line of the orthographic projection of the second recessed portion 62 on the display backplate 10 is greater than or equal to 1 micrometer and less than or equal to 3 micrometers, for example, the distance between the edge line of the orthographic projection of the second via hole 82 on the display backplate 10 and the edge line of the orthographic projection of the second recessed portion 62 on the display backplate 10 can be 1.2 micrometers, 1.5 micrometers, 1.7 micrometers, 2 micrometers, 2.3 micrometers, 2.5 micrometers, 2.8 micrometers, and the like.

[0210] The distance between the edge line of the orthographic projection of the third via hole 83 on the display backplate 10 and the edge line of the orthographic projection of the third recessed portion 63 on the display backplate 10 is greater than or equal to 1 micrometer and less than or equal to 3 micrometers, for example, the distance between the edge line of the orthographic projection of the third via hole 83 on the display backplate 10 and the edge line of the orthographic projection of the third recessed portion 63 on the display backplate 10 can be 1.2 micrometers, 1.5 micrometers, 1.7 micrometers, 2 micrometers, 2.3 micrometers, 2.5 micrometers, 2.8 micrometers, and the like.

[0211] It should be noted that the edge line of the orthographic projection of the first recessed portion 61 on the display backplate 10 refers to the edge line of the orthographic projection of the side of the first recessed portion 61 close to the light shielding layer 8 on the display backplate 10, the edge line of the orthographic projection of the second recessed portion 62 on the display backplate 10 refers to the edge line of the orthographic projection of the side of the second recessed portion 62 close to the light shielding layer 8 on the display backplate 10, and the edge line of the orthographic projection of the third recessed portion 63 on the display backplate 10 refers to the edge line of the orthographic projection of the side of the third recessed portion 63 close to the light shielding layer 8 on the display backplate 10.

[0212] In this case, a part of the first filter layer 7R, the second filter layer 7G, and the third filter layer 7B extends to the side of the light shielding layer 8 away from the display backboard 10.

[0213] In the manufacturing process, the light shielding layer 8 can be manufactured first, and then the first filter layer 7R, the second filter layer 7G, and the third filter layer 7B are manufactured. In this case, the process precision required by the first filter layer 7R, the second filter layer 7G, and the third filter layer 7B can be reduced, thereby reducing the cost and improving the efficiency.

[0214] Referring to FIG. 19, in some example embodiments of the present disclosure, the thickness of the first filter layer 7R is greater than the thickness of the second filter layer 7G, and the thickness of the first filter layer 7R is greater than the thickness of the third filter layer 7B.

[0215] Specifically, the difference between the thickness of the first filter layer 7R and the thickness of the second filter layer 7G is greater than or equal to 0.2 microns and less than or equal to 0.5 microns, for example, the difference between the thickness of the first filter layer 7R and the thickness of the second filter layer 7G can be 0.23 microns, 0.25 microns, 0.28 microns, 0.3 microns, 0.32 microns, 0.35 microns, 0.37 microns, 0.4 microns, 0.43 microns, 0.45 microns, 0.48 microns, and the like.

[0216] The difference between the thickness of the first filter layer 7R and the thickness of the third filter layer 7B is greater than or equal to 0.2 microns and less than or equal to 0.5 microns, for example, the difference between the thickness of the first filter layer 7R and the thickness of the third filter layer 7B can be 0.23 microns, 0.25 microns, 0.28 microns, 0.3 microns, 0.32 microns, 0.35 microns, 0.37 microns, 0.4 microns, 0.43 microns, 0.45 microns, 0.48 microns, and the like.

[0217] In this way, the light extraction efficiency of the first sub-pixel 35R can be reduced, and the color deviation caused by the different gains of the light extraction efficiency of the sub-pixels 35 of different colors can be reduced or even avoided.

[0218] Based on the same inventive concept, the example embodiments of the present disclosure provide a display device, which can include the display panel of any one of the above. The specific structure of the display panel has been described in detail above, and thus will not be described here.

[0219] The specific type of the display device is not particularly limited, and any type of display device commonly used in the art can be used, for example, a mobile device such as a mobile phone, a wearable device such as a watch, a VR device, and the like. The specific type of the display device can be selected by a person skilled in the art according to the specific use of the display device, and thus will not be described here.

[0220] It should be noted that the display device further comprises other necessary components and compositions besides the display panel, for example, a housing, a circuit board, a power cord, etc., which will be supplemented by those skilled in the art according to the specific use requirements of the display device, and will not be described here.

[0221] Compared with the prior art, the display device provided by the example embodiments of the present application has the same beneficial effects as the display panel provided by the example embodiments described above, and will not be described here.

[0222] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses or adaptations of the disclosure that are deemed to fall within the general principles of the disclosure and include examples of the known art or technical means in the field that are not disclosed in the disclosure. The specification and examples are considered to be exemplary only, and the true scope and spirit of the disclosure are indicated by the appended claims.

Claims

1. A display panel, wherein, The display panel comprises: a display backboard comprising a first sub-pixel, a second sub-pixel and a third sub-pixel; a touch layer group arranged on the light-emitting side of the display backboard, the touch layer group comprising a first touch functional layer, the first touch functional layer comprising a dummy portion, the dummy portion being provided with a via hole, a normal projection of the via hole on the display backboard covering the first sub-pixel; a light line adjusting layer arranged on the side of the first touch functional layer away from the display backboard, the light line adjusting layer being provided with a first recessed portion and a second recessed portion, a normal projection of the first recessed portion on the display backboard at least partially overlapping the first sub-pixel, a normal projection of the second recessed portion on the display backboard at least partially overlapping the second sub-pixel, and the dummy portion extending to at least a sidewall of the first recessed portion; a first filter layer, at least a portion of the first filter layer being located in the first recessed portion, the refractive index of the first filter layer being greater than the refractive index of the light line adjusting layer; a second filter layer, at least a portion of the second filter layer being located in the second recessed portion, the refractive index of the second filter layer being greater than the refractive index of the light line adjusting layer, and the refractive index of the second filter layer being less than the refractive index of the first filter layer.

2. The display panel of claim 1, wherein, The distance between the edge line of the normal projection of the via hole on the display backboard and the edge line of the first sub-pixel is greater than or equal to 0 and less than or equal to 1 micrometer.

3. The display panel of claim 1, wherein, The distance between the edge line of the normal projection of the via hole on the display backboard and the edge line of the normal projection of the first recessed portion on the display backboard is greater than or equal to 0 and less than or equal to 2 micrometers.

4. The display panel of claim 1, wherein, The dummy portion is arranged in a ring shape, and the ring width of the dummy portion is greater than or equal to 3 micrometers and less than or equal to 4 micrometers.

5. The display panel of claim 1, wherein, The light line adjusting layer is further provided with a third recessed portion, a normal projection of the third recessed portion on the display backboard at least partially overlapping the third sub-pixel, and the display panel further comprising: a third filter layer, at least a portion of the third filter layer being located in the third recessed portion, the refractive index of the third filter layer being greater than the refractive index of the light line adjusting layer, and the refractive index of the third filter layer being less than the refractive index of the first filter layer.

6. The display panel of claim 5, wherein, The normal projection of the first recessed portion on the display backboard completely covers the first sub-pixel, and / or the normal projection of the second recessed portion on the display backboard completely covers the second sub-pixel, and / or the normal projection of the third recessed portion on the display backboard completely covers the third sub-pixel.

7. The display panel of claim 5, wherein, The first recessed portion, the second recessed portion and the third recessed portion are through holes arranged on the light line adjusting layer.

8. The display panel of claim 7, wherein, The light line adjusting layer comprises a second island and a third island, the second island being located in the second recessed portion, and the third island being located in the third recessed portion.

9. The display panel of claim 8, wherein, A height of a sidewall of the second island in a second direction increases as a distance from a center of the second sub-pixel in a first direction decreases; a height of a sidewall of the third island in the second direction increases as a distance from a center of the third sub-pixel in the first direction decreases; the second direction is perpendicular to a face of the display backplane on which the touch layer group is disposed, and the first direction is parallel to the face of the display backplane on which the touch layer group is disposed.

10. The display panel of claim 9, wherein, The sidewall of the second island includes an inclined surface, and an angle between the sidewall of the second island and a first reference plane is greater than or equal to 55° and less than or equal to 85°; the sidewall of the third island includes an inclined surface, and an angle between the sidewall of the third island and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the first reference plane is parallel to the face of the display backplane on which the touch layer group is disposed.

11. The display panel of claim 8, wherein, A ratio of an area of a projection of the second island on the display backplate to an area of a projection of the second recess on the display backplate is greater than or equal to 3% and less than or equal to 40%, and a ratio of an area of a projection of the third island on the display backplate to an area of a projection of the third recess on the display backplate is greater than or equal to 3% and less than or equal to 40%.

12. The display panel of claim 11, wherein, A maximum dimension of the projection of the second island on the display backplate is greater than or equal to 3 microns and less than or equal to 5 microns, and a maximum dimension of the projection of the third island on the display backplate is greater than or equal to 3 microns and less than or equal to 5 microns.

13. The display panel of claim 5, wherein, The first recess is a blind hole disposed on the light adjusting layer, and the second recess and the third recess are through holes disposed on the light adjusting layer.

14. The display panel of claim 13, wherein, A thickness of the light adjusting layer is greater than or equal to 1.5 microns and less than or equal to 2.5 microns, and a thickness of the light adjusting layer at the first recess is greater than or equal to 0.5 microns and less than or equal to 1 micron.

15. The display panel of claim 5, wherein, A height of a sidewall of the first recess in a second direction increases as a distance from a center of the first sub-pixel in a first direction increases; a height of a sidewall of the second recess in the second direction increases as a distance from a center of the second sub-pixel in the first direction increases; a height of a sidewall of the third recess in the second direction increases as a distance from a center of the third sub-pixel in the first direction increases; the second direction is perpendicular to a face of the display backplane on which the touch layer group is disposed, and the first direction is parallel to the face of the display backplane on which the touch layer group is disposed.

16. The display panel of claim 15, wherein, The sidewall of the first recess includes an inclined surface, and an angle between the sidewall of the first recess and a first reference plane is greater than or equal to 55° and less than or equal to 85°; the sidewall of the second recess includes an inclined surface, and an angle between the sidewall of the second recess and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the sidewall of the third recess includes an inclined surface, and an angle between the sidewall of the third recess and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the first reference plane is parallel to the face of the display backplane on which the touch layer group is disposed.

17. The display panel according to any one of claims 5 to 16, wherein The display panel further includes: A light shielding layer is disposed on a side of the light adjusting layer away from the display backplane, and the light shielding layer is provided with a first via hole, a second via hole, and a third via hole. A projection of the first via hole on the display backplane covers the first sub-pixel, a projection of the second via hole on the display backplane covers the second sub-pixel, and a projection of the third via hole on the display backplane covers the third sub-pixel. A second planarization layer is disposed on a side of the light shielding layer away from the display backplane.

18. The display panel of claim 17, wherein, The first filter layer is located in the first via hole, the second filter layer is located in the second via hole, and the third filter layer is located in the third via hole. A spacing between a hole wall of the first via hole and the first filter layer is greater than or equal to 0 and less than or equal to 2 microns, a spacing between a hole wall of the second via hole and the second filter layer is greater than or equal to 0 and less than or equal to 2 microns, and a spacing between a hole wall of the third via hole and the third filter layer is greater than or equal to 0 and less than or equal to 2 microns.

19. The display panel of claim 17, wherein, A part of the first filter layer, the second filter layer, and the third filter layer extends to a side of the light adjusting layer away from the display backplane and does not overlap. A ring width of an overlapping part of the first filter layer and the light adjusting layer is greater than or equal to 0 and less than or equal to 2 microns, a ring width of an overlapping part of the second filter layer and the light adjusting layer is greater than or equal to 0 and less than or equal to 2 microns, and a ring width of an overlapping part of the third filter layer and the light adjusting layer is greater than or equal to 0 and less than or equal to 2 microns.

20. The display panel of claim 17, wherein, The light adjusting layer is provided with a fourth recess, a fifth recess, and a sixth recess. The fourth recess is disposed around the first recess, the fifth recess is disposed around the second recess, and the sixth recess is disposed around the third recess. The light shielding layer is further disposed in the fourth recess, the fifth recess, and the sixth recess, or the light shielding layer is further disposed in the fourth recess, the fifth recess, and the sixth recess, and the first filter layer is further disposed in the fourth recess, the second filter layer is further disposed in the fifth recess, and the third filter layer is further disposed in the sixth recess.

21. The display panel of claim 17, wherein, A part of the first filter layer, the second filter layer, and the third filter layer extends to a side of the light adjusting layer away from the display backplane and does not overlap, and the light shielding layer is at least disposed on a side of the first filter layer, the second filter layer, and the third filter layer away from the display backplane.

22. The display panel of claim 17, wherein, A distance between an edge line of a projection of the first via on the display backplate and an edge line of a projection of the first recess on the display backplate is greater than or equal to 1 micrometer and less than or equal to 3 micrometers, a distance between an edge line of a projection of the second via on the display backplate and an edge line of a projection of the second recess on the display backplate is greater than or equal to 1 micrometer and less than or equal to 3 micrometers, a distance between an edge line of a projection of the third via on the display backplate and an edge line of a projection of the third recess on the display backplate is greater than or equal to 1 micrometer and less than or equal to 3 micrometers, and a portion of the first filter layer, the second filter layer, and the third filter layer extends to a side of the light-shielding layer facing away from the display backplate.

23. The display panel according to any one of claims 5 to 16, wherein A thickness of the first filter layer is greater than a thickness of the second filter layer, and a thickness of the first filter layer is greater than a thickness of the third filter layer.

24. A display device comprising: The display panel comprises: The display panel of any one of claims 1-23.

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