Display panel and display device

Abstract

The utility model relates to a display panel and a display device. The display panel comprises a display back plate and a display panel, wherein the display back plate comprises three sub-pixels; the touch layer group, the first light filtering layer and the second light filtering layer are arranged on the light emitting side of the display backboard, the touch layer group comprises an insulating layer group, the insulating layer group comprises at least two insulating layers and is provided with a first concave part and a second concave part, and the orthographic projection of the first concave part on the display backboard is overlapped with the first sub-pixel; at least part of the first filter layer is located in the first sunken part, and the refractive index of the first filter layer is larger than that of the insulating layer provided with the first sunken part; at least part of the second filter layer is located in the second concave part, and the refractive index of the second filter layer is different from that of the first filter layer and larger than that of the insulating layer provided with the second concave part; the orthographic projection of the second concave part on the display back plate is overlapped with the second sub-pixel, and the area of the total reflection surface of the concave part corresponding to one of the first filter layer and the second filter layer with the larger refractive index is small.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Organic Light-Emitting Display (OLED) display panels have become the mainstream development direction in the field of display technology due to their advantages such as self-luminescence, high brightness, good image quality and low energy consumption.

[0003] However, sub-pixels of different colors in current display panels have different light extraction efficiencies, which causes the display panel to easily suffer from color shift.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Utility Model Content

[0005] The purpose of the present disclosure is to overcome the above-mentioned deficiencies of the prior art and to provide a display panel and a display device.

[0006] According to one aspect of the present disclosure, there is provided a display panel, comprising:

[0007] A display backplane comprising a first sub-pixel, a second sub-pixel, and a third sub-pixel;

[0008] a touch layer group, disposed on the light-emitting side of the display backplane, the touch layer group including an insulating layer group including at least two insulating layers, a first recessed portion being provided on the insulating layer group, an orthographic projection of the first recessed portion on the display backplane at least partially overlapping with the first sub-pixel;

[0009] a first filter layer provided on the light-emitting side of the display backplane, wherein at least a portion of the first filter layer is located in the first recessed portion, and a refractive index of the first filter layer is greater than a refractive index of the insulating layer in which the first recessed portion is provided;

[0010] a second filter layer, provided on the light-emitting side of the display backplane, wherein the refractive index of the second filter layer is different from that of the first filter layer;

[0011] A second recessed portion is provided on the insulating layer group, an orthographic projection of the second recessed portion on the display backplane at least partially overlaps with the second sub-pixel, at least a portion of the second filter layer is located within the second recessed portion, a refractive index of the second filter layer is greater than a refractive index of the insulating layer in which the second recessed portion is provided, and an area of ​​a total reflection surface of the recessed portion corresponding to the one with the larger refractive index between the first filter layer and the second filter layer is smaller;

[0012] Alternatively, the insulating layer group includes a second protrusion, the orthographic projection of the second protrusion on the display backplane at least partially overlaps with the second sub-pixel, the second filter layer is arranged on the side of the second protrusion facing away from the display backplane, and covers at least a portion of the side wall of the second protrusion, the refractive index of the second filter layer is smaller than the refractive index of the second protrusion, and the distance between the first recessed portion or the second protrusion corresponding to the one with the larger refractive index between the first filter layer and the second filter layer and the display backplane is small.

[0013] In an exemplary embodiment of the present disclosure, the display panel further includes:

[0014] a third filter layer, provided on the light-emitting side of the display backplane, wherein the refractive index of the third filter layer is different from that of the first filter layer;

[0015] A third recessed portion is provided on the insulating layer group, an orthographic projection of the third recessed portion on the display backplane at least partially overlaps with the third sub-pixel, at least a portion of the third filter layer is located within the third recessed portion, a refractive index of the third filter layer is greater than a refractive index of the insulating layer in which the third recessed portion is provided, and an area of ​​a total reflection surface of the recessed portion corresponding to the one with the larger refractive index between the first filter layer and the third filter layer is smaller;

[0016] Alternatively, the insulating layer group includes a third protrusion, the orthographic projection of the third protrusion on the display backplane at least partially overlaps with the third sub-pixel, the third filter layer is arranged on a side of the third protrusion facing away from the display backplane, and covers at least a portion of the side wall of the third protrusion, the refractive index of the third filter layer is smaller than the refractive index of the insulating layer on which the third protrusion is arranged, and the distance between the first recessed portion or the third protrusion corresponding to the one with the larger refractive index between the first filter layer and the third filter layer and the display backplane is small.

[0017] In an exemplary embodiment of the present disclosure, a distance between a surface of the first recessed portion close to the display back plate and the display back plate is a first distance, a distance between a surface of the second protruding portion close to the display back plate and the display back plate is a second distance, and a distance between a surface of the third protruding portion close to the display back plate and the display back plate is a third distance;

[0018] The refractive index of the third filter layer is smaller than that of the first filter layer, the refractive index of the second filter layer is smaller than that of the first filter layer, the second distance is larger than the first distance, and the third distance is larger than the first distance;

[0019] Alternatively, the refractive index of the third filter layer is greater than that of the first filter layer, the refractive index of the second filter layer is greater than that of the first filter layer, the second distance is smaller than the first distance, and the third distance is smaller than the first distance.

[0020] In an exemplary embodiment of the present disclosure, the refractive index of the second filter layer is equal to the refractive index of the third filter layer, and the second distance is equal to the third distance; or, the refractive index of the second filter layer is smaller than the refractive index of the third filter layer, and the second distance is greater than the third distance; or, the refractive index of the second filter layer is greater than the refractive index of the third filter layer, and the second distance is smaller than the third distance.

[0021] In an exemplary embodiment of the present disclosure, the second protrusion is configured as a single-layer structure or a double-layer structure, and the third protrusion is configured as a single-layer structure or a double-layer structure.

[0022] In an exemplary embodiment of the present disclosure, the touch layer group includes a base layer, a first touch function layer, a touch insulation layer, a second touch function layer, and a protective layer stacked in sequence, wherein the base layer, the touch insulation layer, and the protective layer are all the insulating layers;

[0023] The first recessed portion is provided in the base layer, and the second protruding portion and the third protruding portion are provided in the touch insulating layer; or, the first recessed portion is provided in the base layer, and the second protruding portion and the third protruding portion are provided in the protective layer; or, the first recessed portion is provided in the touch insulating layer, and the second protruding portion and the third protruding portion are provided in the protective layer; or, the first recessed portion is provided in the base layer, the touch insulating layer includes a first sub-protruding portion and a second sub-protruding portion, and the protective layer includes a third sub-protruding portion and a fourth sub-protruding portion, the third sub-protruding portion is provided on a side of the first sub-protruding portion away from the display backplane, the fourth sub-protruding portion is provided on a side of the second sub-protruding portion away from the display backplane, the second protruding portion includes the first sub-protruding portion and the third sub-protruding portion, and the third protruding portion includes the second sub-protruding portion and the fourth sub-protruding portion; or, the first recessed portion is provided in the base layer, the second protruding portion is provided in the The touch insulation layer, the third protrusion is provided on the protective layer; or the first recessed portion is provided on the base layer, the second protrusion is provided on the protective layer, and the third protrusion is provided on the touch insulation layer; or the first recessed portion is provided on the protective layer, and the second protrusion and the third protrusion are provided on the base layer; or the first recessed portion is provided on the touch insulation layer, and the second protrusion and the third protrusion are provided on the base layer; or the first recessed portion is provided on the touch insulation layer, and the second protrusion and the third protrusion are provided on the base layer; or the first recessed portion is provided on the protective layer, the base layer includes a first sub-protrusion and a second sub-protrusion, the touch insulation layer includes a third sub-protrusion and a fourth sub-protrusion, the third sub-protrusion is provided on a side of the first sub-protrusion away from the display backplane, the fourth sub-protrusion is provided on a side of the second sub-protrusion away from the display backplane, the second protrusion includes the first sub-protrusion and the third sub-protrusion, and the third protrusion includes the second sub-protrusion and the fourth sub-protrusion.

[0024] In an exemplary embodiment of the present disclosure, the first recessed portion, the second recessed portion, and the third recessed portion are provided in the same insulating layer.

[0025] In an exemplary embodiment of the present disclosure, the first recessed portion, the second recessed portion and the third recessed portion are provided on one insulating layer, or the first recessed portion, the second recessed portion and the third recessed portion are provided on two adjacent insulating layers.

[0026] In an exemplary embodiment of the present disclosure, the touch layer group includes a base layer, a first touch function layer, a touch insulation layer, a second touch function layer, and a protective layer stacked in sequence, wherein the base layer, the touch insulation layer, and the protective layer are all the insulating layers;

[0027] The first recessed portion, the second recessed portion, and the third recessed portion are provided in the base layer; or, the first recessed portion, the second recessed portion, and the third recessed portion are provided in the touch insulating layer; or, the first recessed portion, the second recessed portion, and the third recessed portion are provided in the protective layer; or, the base layer is provided with a first sub-recessed portion, a second sub-recessed portion, and a third sub-recessed portion, and the touch insulating layer is provided with a fourth sub-recessed portion, a fifth sub-recessed portion, and a sixth sub-recessed portion, the first recessed portion includes the fourth sub-recessed portion and the first sub-recessed portion that are interconnected, and the second recessed portion includes the fourth sub-recessed portion and the first sub-recessed portion that are interconnected. The fifth sub-recessed portion and the second sub-recessed portion are interconnected, and the third recessed portion includes the sixth sub-recessed portion and the third sub-recessed portion that are interconnected; or, the touch insulating layer is provided with a first sub-recessed portion, a second sub-recessed portion and a third sub-recessed portion, and the protective layer is provided with a fourth sub-recessed portion, a fifth sub-recessed portion and a sixth sub-recessed portion, the first recessed portion includes the fourth sub-recessed portion and the first sub-recessed portion that are interconnected, the second recessed portion includes the fifth sub-recessed portion and the second sub-recessed portion that are interconnected, and the third recessed portion includes the sixth sub-recessed portion and the third sub-recessed portion that are interconnected.

[0028] In an exemplary embodiment of the present disclosure, the refractive index of the first filter layer is greater than the refractive index of the second filter layer, and the refractive index of the first filter layer is greater than the refractive index of the third filter layer; the first recessed portion is configured to have a shape that is compatible with the first sub-pixel, the second recessed portion is configured to have a ring shape that is compatible with the second sub-pixel, and the third recessed portion is configured to have a ring shape that is compatible with the third sub-pixel;

[0029] And / or, the first recessed portion is configured as a blind hole that does not penetrate the insulating layer, the second recessed portion is configured as a through hole that penetrates the insulating layer, and the third recessed portion is configured as a through hole that penetrates the insulating layer.

[0030] In an exemplary embodiment of the present disclosure, the touch layer group further includes:

[0031] A functional layer is provided between two adjacent insulating layers, the functional layer includes a dummy portion, the dummy portion is provided with a via, the orthographic projection of the via on the display backplane covers the first sub-pixel, and the dummy portion extends at least to the side wall of the first recessed portion.

[0032] In an exemplary embodiment of the present disclosure, the functional layer is the first touch functional layer or the second touch functional layer.

[0033] In an exemplary embodiment of the present disclosure, the orthographic projection area of ​​one end of the fourth sub-recessed portion close to the first sub-recessed portion on the display back panel is larger than the orthographic projection area of ​​one end of the first sub-recessed portion close to the fourth sub-recessed portion on the display back panel, so that the first recessed portion forms a step structure in which the opening portion is larger than the bottom.

[0034] In an exemplary embodiment of the present disclosure, the first touch functional layer includes a bridging portion, the second touch functional layer includes a touch electrode, the orthographic projection of the first filter layer on the display backplane does not overlap with the orthographic projection of the bridging portion and the touch electrode on the display backplane, the orthographic projection of the second filter layer on the display backplane does not overlap with the orthographic projection of the bridging portion and the touch electrode on the display backplane, and the orthographic projection of the third filter layer on the display backplane does not overlap with the orthographic projection of the bridging portion and the touch electrode on the display backplane.

[0035] In an exemplary embodiment of the present disclosure, the distance between the edge line of the orthographic projection of the via hole on the display backplane and the edge line of the first sub-pixel is greater than or equal to 0 and less than or equal to 1 micron; and / or, the distance between the edge line of the orthographic projection of the via hole on the display backplane and the edge line of the orthographic projection of the first recessed portion on the display backplane is greater than or equal to 0 and less than or equal to 2 microns; and / or, the dummy portion is configured to be annular, and the ring width of the dummy portion is greater than or equal to 3 microns and less than or equal to 4 microns.

[0036] In an exemplary embodiment of the present disclosure, the thickness of the insulating layer in which the first recessed portion is provided is greater than or equal to 1.5 microns and less than or equal to 2.5 microns. When the first recessed portion is provided as a blind hole that does not penetrate the insulating layer, the thickness of the insulating layer at the first recessed portion is greater than or equal to 0.5 microns and less than or equal to 1 micron.

[0037] In an exemplary embodiment of the present disclosure, the orthographic projection of the first recessed portion on the display backplane completely covers the first sub-pixel, and / or the orthographic projection of the second recessed portion on the display backplane completely covers the second sub-pixel, and / or the orthographic projection of the third recessed portion on the display backplane completely covers the third sub-pixel;

[0038] Alternatively, the orthographic projection of the first recessed portion on the display backplane completely covers the first sub-pixel, and / or the orthographic projection of the second protruding portion on the display backplane completely covers the second sub-pixel, and / or the orthographic projection of the third protruding portion on the display backplane completely covers the third sub-pixel.

[0039] In an exemplary embodiment of the present disclosure, a distance between an edge line of an orthographic projection of the first recessed portion on the display backplane and an edge line of the first sub-pixel is greater than or equal to 0.5 micrometers and less than or equal to 2 micrometers, and / or a distance between an edge line of an orthographic projection of the second recessed portion on the display backplane and an edge line of the second sub-pixel is greater than or equal to 0.5 micrometers and less than or equal to 2 micrometers, and / or a distance between an orthographic projection of the third recessed portion on the display backplane and an edge line of the third sub-pixel is greater than or equal to 0.5 micrometers and less than or equal to 2 micrometers.

[0040] Alternatively, the distance between the edge line of the orthographic projection of the first recessed portion on the display backplane and the edge line of the first sub-pixel is greater than or equal to 0.5 microns and less than or equal to 2 microns, and / or the distance between the edge line of the orthographic projection of the second protruding portion on the display backplane and the edge line of the second sub-pixel is greater than or equal to 0.5 microns and less than or equal to 2 microns, and / or the distance between the orthographic projection of the third protruding portion on the display backplane and the edge line of the third sub-pixel is greater than or equal to 0.5 microns and less than or equal to 2 microns.

[0041] In an exemplary embodiment of the present disclosure, a distance between a sidewall of the first recess and a center of the first sub-pixel in the first direction increases as a height of the sidewall of the first recess in the second direction increases;

[0042] The distance between the sidewall of the second recess and the center of the second sub-pixel in the first direction increases as the height of the sidewall of the second recess increases in the second direction, and the distance between the sidewall of the third recess and the center of the third sub-pixel in the first direction increases as the height of the sidewall of the third recess increases in the second direction; or, when the second recess is arranged in an annular shape, the distance between the outer ring sidewall of the second recess and the center of the second sub-pixel in the first direction increases as the height of the outer ring sidewall of the second recess increases in the second direction, and the distance between the inner ring sidewall of the second recess and the center of the second sub-pixel in the first direction decreases as the height of the inner ring sidewall of the second recess increases in the second direction; when the third recess is arranged in an annular shape, the distance between the outer ring sidewall of the third recess and the center of the third sub-pixel in the first direction increases as the height of the outer ring sidewall of the third recess increases in the second direction, and the distance between the inner ring sidewall of the third recess and the center of the third sub-pixel in the first direction decreases as the height of the inner ring sidewall of the third recess increases in the second direction;

[0043] Alternatively, the distance between the sidewall of the second protrusion and the center of the second sub-pixel in the first direction increases as the height of the sidewall of the second protrusion decreases in the second direction, and the distance between the sidewall of the third protrusion and the center of the third sub-pixel in the first direction increases as the height of the sidewall of the third protrusion decreases in the second direction;

[0044] The second direction is perpendicular to a surface of the display backplane where the touch layer group is disposed, and the first direction is parallel to a surface of the display backplane where the touch layer group is disposed.

[0045] In an exemplary embodiment of the present disclosure, the sidewall of the first recessed portion includes an inclined surface, and the angle between the sidewall of the first recessed portion and the first reference plane is greater than or equal to 55° and less than or equal to 85°;

[0046] The side wall of the second recessed portion includes a bevel, and the angle between the side wall of the second recessed portion and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the side wall of the third recessed portion includes a bevel, and the angle between the side wall of the third recessed portion and the first reference plane is greater than or equal to 55° and less than or equal to 85°; or, the outer ring side wall of the second recessed portion includes a bevel, and the angle between the outer ring side wall of the second recessed portion and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the inner ring side wall of the second recessed portion includes a bevel, and the angle between the inner ring side wall of the second recessed portion and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the outer ring side wall of the third recessed portion includes a bevel, and the angle between the outer ring side wall of the third recessed portion and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the inner ring side wall of the third recessed portion includes a bevel, and the angle between the inner ring side wall of the third recessed portion and the first reference plane is greater than or equal to 55° and less than or equal to 85°;

[0047] Alternatively, the sidewall of the second protrusion includes an inclined surface, and the angle between the sidewall of the second protrusion and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the sidewall of the third protrusion includes an inclined surface, and the angle between the sidewall of the third protrusion and the first reference plane is greater than or equal to 55° and less than or equal to 85°;

[0048] The first reference plane is parallel to a surface of the display backplane on which the touch layer group is disposed.

[0049] In an exemplary embodiment of the present disclosure, the refractive index of the first filter layer is greater than or equal to 1.65 and less than or equal to 1.75, the refractive index of the second filter layer is greater than or equal to 1.55 and less than or equal to 1.65, and the refractive index of the third filter layer is greater than or equal to 1.55 and less than or equal to 1.65;

[0050] The refractive index of the insulating layer provided with the first recessed portion, the second recessed portion and the third recessed portion is greater than or equal to 1.45 and less than or equal to 1.55; or, the refractive index of the insulating layer provided with the first recessed portion is greater than or equal to 1.45 and less than or equal to 1.55, the refractive index of the insulating layer provided with the second protruding portion is greater than or equal to 1.7 and less than or equal to 1.85, and the refractive index of the insulating layer provided with the third protruding portion is greater than or equal to 1.7 and less than or equal to 1.85.

[0051] In an exemplary embodiment of the present disclosure, the display panel further includes:

[0052] a light shielding layer provided on a side of the touch layer group facing away from the display backplane, the light shielding layer being provided with a first via hole, a second via hole, and a third via hole, the orthographic projection of the first via hole on the display backplane covering the first sub-pixel, the orthographic projection of the second via hole on the display backplane covering the second sub-pixel, and the orthographic projection of the third via hole on the display backplane covering the third sub-pixel; the orthographic projection of the light shielding layer on the display backplane not overlapping with the orthographic projections of the first recessed portion, the second recessed portion, and the third recessed portion on the display backplane, or the orthographic projection of the light shielding layer on the display backplane not overlapping with the orthographic projections of the first recessed portion, the second protruding portion, and the third protruding portion on the display backplane;

[0053] The second planarization layer is arranged on a side of the light shielding layer away from the display backplane.

[0054] In an exemplary embodiment of the present disclosure, the first sub-pixel is a red sub-pixel, the second sub-pixel is a green sub-pixel, and the third sub-pixel is a blue sub-pixel; the first filter layer is a red filter layer, the second filter layer is a green filter layer, and the third filter layer is a blue filter layer.

[0055] In an exemplary embodiment of the present disclosure, the insulating layer is made of an organic material.

[0056] In an exemplary embodiment of the present disclosure, the display backplane further includes an encapsulation layer group, and the encapsulation layer group is provided on a side of the touch layer group close to the first sub-pixel, the second sub-pixel, and the third sub-pixel.

[0057] According to another aspect of the present disclosure, a display device is provided, comprising: a display panel as described in any one of the above.

[0058] In the display panel disclosed herein, on the one hand, light is emitted from the first filter layer to the side wall of the first recessed portion, which is from an optically dense medium to an optically sparse medium. Therefore, the light is easily totally reflected at the interface between the first filter layer and the side wall of the first recessed portion. The side wall of the first recessed portion causes the inclined outgoing light to be totally reflected to form totally reflected light, changing the angle of the outgoing light, thereby making the totally reflected light more concentrated and emitted from the front of the display panel, thereby improving the light emission efficiency of the front of the display panel. Light is emitted from the second filter layer to the side wall of the second recessed portion, which is from an optically dense medium to an optically sparse medium. Therefore, the light is emitted from the interface between the second filter layer and the side wall of the second recessed portion. Total reflection is likely to occur. The sidewall of the second recessed portion will cause the inclined outgoing light to be totally reflected to form totally reflected light, thereby changing the angle of the outgoing light, thereby making the totally reflected light more convergent and emitted from the front of the display panel, thereby improving the light extraction efficiency from the front of the display panel; alternatively, the sidewall of the second protruding portion can adjust the incident angle of the light emitted from the second sub-pixel at the interface between the second protruding portion and the second filter layer, so that the incident angle is smaller, and refraction occurs at the interface between the second protruding portion and the second filter layer. After refraction at the interface between the second protruding portion and the second filter layer, the outgoing light is offset toward the positive viewing angle, thereby improving the light extraction efficiency.

[0059] On the other hand, the area of ​​the total reflection surface of the recessed portion corresponding to the one with a larger refractive index in the first filter layer or the second filter layer is small, or the distance between the surface of the first recessed portion or the second protruding portion corresponding to the one with a larger refractive index in the first filter layer or the second filter layer close to the display backplane and the display backplane is small; that is, the first sub-pixel and the second sub-pixel improve the light extraction efficiency in different ways, which can reduce or even avoid color shift caused by different light extraction efficiency gains of sub-pixels of different colors due to different refractive indices of the filter layers, thereby effectively improving the light extraction efficiency of both the first sub-pixel and the second sub-pixel, thereby improving the light extraction efficiency of the display panel.

[0060] On the other hand, when the ambient light is strong, after the ambient light is filtered by the first filter layer, only light of one color enters the display panel. After being reflected by the display panel, only light of that one color exits the display panel. After the ambient light is filtered by the second filter layer, only light of another color enters the display panel. After being reflected by the display panel, only light of that other color exits the display panel, thereby achieving the purpose of anti-glare.

[0061] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0063] Figure 1 Schematic diagram of the structure of the first exemplary embodiment of the display panel disclosed herein.

[0064] Figure 2 Schematic diagram of the structure of a second exemplary embodiment of a display panel disclosed herein.

[0065] Figure 3 Schematic diagram of the structure of a third exemplary embodiment of a display panel disclosed herein.

[0066] Figure 4 2 is a schematic structural diagram of a fourth exemplary embodiment of a display panel according to the present disclosure.

[0067] Figure 5 2 is a schematic structural diagram of a fifth exemplary embodiment of a display panel according to the present disclosure.

[0068] Figure 6 Schematic diagram of the structure of a sixth exemplary embodiment of a display panel according to the present disclosure.

[0069] Figure 7 2 is a schematic structural diagram of a seventh exemplary embodiment of a display panel according to the present disclosure.

[0070] Figure 8 Schematic diagram of the structure of an eighth exemplary embodiment of a display panel according to the present disclosure.

[0071] Figure 9 2 is a schematic structural diagram of a ninth exemplary embodiment of a display panel according to the present disclosure.

[0072] Figure 10 FIG. 1 is a schematic structural diagram of a tenth exemplary embodiment of a display panel according to the present disclosure.

[0073] Figure 11 FIG. 1 is a schematic structural diagram of an eleventh exemplary embodiment of a display panel according to the present disclosure.

[0074] Figure 12 2 is a schematic structural diagram of a twelfth exemplary embodiment of a display panel according to the present disclosure.

[0075] Figure 13 FIG. 1 is a schematic structural diagram of a thirteenth exemplary embodiment of a display panel according to the present disclosure.

[0076] Figure 14 14 is a schematic structural diagram of a fourteenth exemplary embodiment of a display panel according to the present disclosure.

[0077] Figure 15 2 is a schematic structural diagram of a fifteenth exemplary embodiment of a display panel according to the present disclosure.

[0078] Figure 16 16 is a schematic structural diagram of a sixteenth exemplary embodiment of a display panel according to the present disclosure.

[0079] Figure 17 2 is a structural diagram of a seventeenth exemplary embodiment of a display panel according to the present disclosure.

[0080] Figure 18 18 is a schematic structural diagram of an eighteenth exemplary embodiment of a display panel according to the present disclosure.

[0081] Figure 19 19 is a schematic structural diagram of a nineteenth exemplary embodiment of a display panel according to the present disclosure.

[0082] Figure 20 2 is a schematic structural diagram of the twentieth exemplary embodiment of the display panel disclosed herein.

[0083] Figure 21 2 is a schematic structural diagram of a twenty-first exemplary embodiment of a display panel according to the present disclosure.

[0084] Figure 22 It is a schematic structural diagram of the twenty-second exemplary embodiment of the display panel disclosed herein.

[0085] Figure 23 It is a schematic structural diagram of the twenty-third exemplary embodiment of the display panel of the present disclosure.

[0086] Figure 24 24 is a schematic structural diagram of a twenty-fourth exemplary embodiment of a display panel according to the present disclosure.

[0087] Figure 25 It is a schematic structural diagram of the twenty-fifth exemplary embodiment of the display panel disclosed herein.

[0088] Figure 26 It is a schematic structural diagram of the twenty-sixth exemplary embodiment of the display panel of the present disclosure.

[0089] Figure 27 27 is a schematic structural diagram of a twenty-seventh exemplary embodiment of a display panel according to the present disclosure.

[0090] Figure 28 2 is a schematic structural diagram of a twenty-eighth exemplary embodiment of a display panel according to the present disclosure.

[0091] Figure 29 It is a schematic structural diagram of a twenty-ninth exemplary embodiment of a display panel according to the present disclosure.

[0092] Figure 303. It is a structural schematic diagram of the thirtieth exemplary embodiment of the display panel disclosed herein.

[0093] Figure 31 It is a structural schematic diagram of the thirty-first exemplary embodiment of the display panel disclosed herein.

[0094] Figure 32 2 is a schematic structural diagram of a thirty-second exemplary embodiment of a display panel according to the present disclosure.

[0095] Figure 33 It is a structural schematic diagram of the thirty-third exemplary embodiment of the display panel disclosed herein.

[0096] Figure 34 It is a structural schematic diagram of a thirty-fourth exemplary embodiment of a display panel according to the present disclosure.

[0097] Figure 35 It is a schematic structural diagram of a thirty-fifth exemplary embodiment of a display panel according to the present disclosure.

[0098] Figure 36 It is a schematic structural diagram of a thirty-sixth exemplary embodiment of a display panel according to the present disclosure.

[0099] Figure 37 for Figure 1-Figure 36 A schematic diagram of the backplane structure is shown in FIG.

[0100] Figure 38 is a curve showing the relationship between the angle of the light ray that strikes the concave portion or the convex portion and the light intensity of the light emitted from the sub-pixel.

[0101] Description of reference numerals:

[0102] 10. Display backplane; 1. Base substrate;

[0103] 2. Drive substrate; 21. Blocking layer; 22. Buffer layer; 231. Channel portion; 232. Source connection portion; 233. Drain connection portion; 24. Gate insulation layer; 25. Gate layer; 251. Gate; 26. Interlayer dielectric layer; 27. First connecting conductor layer; 271. Source; 272. Drain; 28. First planarization layer;

[0104] 3. Light-emitting substrate; 31. First electrode; 32. Pixel definition layer; 321. Opening; 33. Light-emitting layer group; 34. Second electrode; 35. Sub-pixels; 351. First sub-pixel; 352. Second sub-pixel; 353. Third sub-pixel;

[0105] 4. Encapsulation layer group; 41. First inorganic layer; 42. Organic layer; 43. Second inorganic layer;

[0106] 5. Touch layer group; 51. Base layer; 52. First touch functional layer; 521. Bridge portion; 53. Touch insulation layer; 54. Second touch functional layer; 541. Touch electrode; 55. Protective layer;

[0107] 5z, insulating layer group; 5a, insulating layer; 5z1, first recessed portion; 5z11, first sub-recessed portion; 5z12, fourth sub-recessed portion; 5z2, second recessed portion; 5z21, second sub-recessed portion; 5z22, fifth sub-recessed portion; 5z3, third recessed portion; 5z31, third sub-recessed portion; 5z32, sixth sub-recessed portion; 5z4, second isolated island; 5z5, third isolated island; 5z6, second protruding portion; 5z61, first sub-protruding portion; 5z62, third sub-protruding portion; 5z7, third protruding portion; 5z71, second sub-protruding portion; 5z72, fourth sub-protruding portion;

[0108] 5b, functional layer; 5b1, dummy portion; 5b11, via hole;

[0109] 61. First filter layer; 62. Second filter layer; 63. Third filter layer;

[0110] 7. Light shielding layer; 71. First via hole; 72. Second via hole; 73. Third via hole;

[0111] 8. Second planarization layer;

[0112] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0113] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent identical or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the figures are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0114] Although relative terms such as "upper" and "lower" are used in this specification to describe the relationship of one illustrated component to another, these terms are used herein for convenience only, such as in accordance with the orientation of the illustrations in the accompanying drawings. It will be understood that if the illustrated device were flipped upside down, the component described as "upper" would become the component "lower." When a structure is referred to as "on" another structure, this may mean that the structure is integrally formed with the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via the other structure.

[0115] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0116] In this application, unless otherwise specified or limited, the term "connected" should be understood broadly. For example, "connected" can mean fixed, removable, or integrated; it can be directly connected or indirectly connected through an intermediary. "And / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0117] The exemplary embodiment of the present disclosure provides a display panel, referring to Figure 1-Figure 38 As shown, the display panel may include a display backplane 10, a touch layer group 5, a first filter layer 61 and a second filter layer 62; the display backplane 10 may include a first sub-pixel 351, a second sub-pixel 352 and a third sub-pixel 353; the touch layer group 5 is provided on the light-emitting side of the display backplane 10, the touch layer group 5 may include an insulating layer group 5z, the insulating layer group 5z may include at least two insulating layers 5a, and a first recessed portion 5z1 is provided on the insulating layer group 5z. The orthographic projection of portion 5z1 on the display back panel 10 at least partially overlaps with the first sub-pixel 351; the first filter layer 61 is arranged on the light-emitting side of the display back panel 10, at least part of the first filter layer 61 is located in the first recessed portion 5z1, and the refractive index of the first filter layer 61 is greater than the refractive index of the insulating layer 5a in which the first recessed portion 5z1 is set; the second filter layer 62 is arranged on the light-emitting side of the display back panel 10, and the refractive index of the second filter layer 62 is different from the refractive index of the first filter layer 61.

[0118] The insulating layer group 5z is provided with a second recessed portion 5z2. The orthographic projection of the second recessed portion 5z2 on the display backplane 10 at least partially overlaps with the second sub-pixel 352. At least a portion of the second filter layer 62 is located within the second recessed portion 5z2. The refractive index of the second filter layer 62 is greater than the refractive index of the insulating layer 5a in which the second recessed portion 5z2 is provided. The area of ​​the total reflection surface of the recessed portion corresponding to the one with the larger refractive index, the first filter layer 61 or the second filter layer 62, is smaller. Alternatively, the insulating layer group 5z may include a second protruding portion 5z6. The orthographic projection of the second protrusion 5z6 on the display back panel 10 at least partially overlaps with the second sub-pixel 352. The second filter layer 62 is arranged on the side of the second protrusion 5z6 facing away from the display back panel 10, and covers at least part of the side wall of the second protrusion 5z6. The refractive index of the second filter layer 62 is smaller than the refractive index of the second protrusion 5z6. The distance between the first recessed portion 5z1 or the second protrusion 5z6 corresponding to the one with the larger refractive index in the first filter layer 61 and the second filter layer 62 and the display back panel 10 is small.

[0119] In the display panel disclosed in the present invention, on the one hand, the light emitted from the first filter layer 61 to the side wall of the first recessed portion 5z1 is emitted from a denser medium to a less dense medium, so the light is easily totally reflected at the interface between the first filter layer 61 and the side wall of the first recessed portion 5z1. The side wall of the first recessed portion 5z1 causes the inclined outgoing light to be totally reflected to form totally reflected light, changing the angle of the outgoing light, thereby making the totally reflected light more concentrated and emitted from the front of the display panel, thereby improving the light emission efficiency of the front of the display panel; the light emitted from the second filter layer 62 to the side wall of the second recessed portion 5z2 is emitted from a denser medium to a less dense medium, so the light is easily reflected at the interface between the second filter layer 62 and the side wall of the second recessed portion 5z2. Total reflection is likely to occur, and the side wall of the second recessed portion 5z2 will cause the inclined outgoing light to be totally reflected to form totally reflected light, thereby changing the angle of the outgoing light, thereby making the totally reflected light more convergent and emitted from the front of the display panel, thereby improving the light output efficiency of the front of the display panel; or, the side wall of the second protruding portion 5z6 can adjust the incident angle of the light emitted from the second sub-pixel 352 at the interface between the second protruding portion 5z6 and the second filter layer 62, so that the incident angle is smaller, and refraction occurs at the interface between the second protruding portion 5z6 and the second filter layer 62. After refraction at the interface between the second protruding portion 5z6 and the second filter layer 62, the outgoing light is offset toward the positive viewing angle, thereby improving the light output efficiency.

[0120] On the other hand, the area of ​​the total reflection surface of the recessed portion corresponding to the one with a larger refractive index in the first filter layer 61 and the second filter layer 62 is small, or the distance between the side of the first recessed portion 5z1 or the second protruding portion 5z6 corresponding to the one with a larger refractive index in the first filter layer 61 and the second filter layer 62 close to the display back panel 10 is small; that is, the first sub-pixel 351 and the second sub-pixel 352 improve the light output efficiency in different ways, which can reduce or even avoid the color deviation caused by the different light output efficiency gains of sub-pixels 35 of different colors due to the different refractive indices of the filter layers, thereby effectively improving the light output efficiency of the first sub-pixel 351 and the second sub-pixel 352, thereby improving the light output efficiency of the display panel.

[0121] On the other hand, when the ambient light is strong, after the ambient light is filtered by the first filter layer 61, only light of one color enters the display panel. After being reflected by the display panel, only light of that one color exits the display panel. After the ambient light is filtered by the second filter layer 62, only light of another color enters the display panel. After being reflected by the display panel, only light of that other color exits the display panel, thereby achieving the purpose of anti-glare.

[0122] The display backplane 10 can be an OLED (Organic Electroluminescence Display) display backplane 10, a QLED (Quantum Dot Light Emitting Diodes) display backplane 10, etc. The display backplane 10 has a light-emitting side and a non-light-emitting side, and the light-emitting side and the non-light-emitting side are arranged opposite to each other. The light-emitting side can display a picture, and the side that displays the picture is the display surface.

[0123] The following description will be made by taking the OLED display backplane 10 as an example.

[0124] In this example embodiment, referring to Figure 37 As shown, the display backplane 10 may include a base substrate 1, and the material of the base substrate 1 may include an inorganic material, for example, the inorganic material may be glass, quartz or metal. The material of the base substrate 1 may also include an organic material, for example, the organic material may be a resin material such as polyimide, polycarbonate, polyacrylate, polyetherimide, polyethersulfone, polyethylene terephthalate and polyethylene naphthalate. The base substrate 1 may be formed by multiple material layers, for example, the base substrate 1 may include multiple base material layers, and the material of the base material layer may be any of the above materials. Of course, the base substrate 1 may also be set as a single layer, and may be any of the above materials.

[0125] Reference Figure 37As shown, the display backplane 10 may further include a driving substrate 2 and a light-emitting substrate 3. The driving substrate 2 is disposed on one side of the base substrate 1, and the light-emitting substrate 3 is disposed on a side of the driving substrate 2 facing away from the base substrate 1. The driving substrate 2 may include a plurality of driving circuits arranged in an array, and the light-emitting substrate 3 may include a plurality of light-emitting devices arranged in an array. The driving circuits may drive the light-emitting devices to emit light.

[0126] Specifically, refer to Figure 37 As shown, a shielding layer 21 can be provided on one side of the base substrate 1. Light incident from the base substrate 1 into the active layer generates photogenerated carriers in the active layer, significantly affecting the characteristics of the thin-film transistor and ultimately the image quality of the display device. The shielding layer 21 can block the light incident from the base substrate 1, thereby preventing it from affecting the characteristics of the thin-film transistor and thus the image quality of the display device. Depending on the type of thin-film transistor, the shielding layer 21 may be omitted.

[0127] A buffer layer 22 may also be formed on the side of the shielding layer 21 facing away from the base substrate 1. The buffer layer 22 serves to block water vapor and impurity ions in the base substrate 1 (especially the organic material) and to increase hydrogen ions for the subsequently formed active layer. The buffer layer 22 is made of an insulating material and can insulate the shielding layer 21 from the active layer. The buffer layer 22 may include silicon nitride, silicon oxide, or silicon oxynitride. Depending on the type of base substrate 1 or process conditions, the buffer layer 22 may be omitted.

[0128] An active layer is provided on the side of the buffer layer 22 facing away from the base substrate 1. The active layer may 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 is provided on the side of the active layer facing away from the base substrate 1. A gate layer 25 is provided on the side of the gate insulating layer 24 facing away from the base substrate 1. The gate layer 25 may include a gate electrode 251 and a gate line (not shown in the figure).

[0129] An interlayer dielectric layer 26 is provided on the side of the gate layer 25 facing away from the base substrate 1, and a connecting via is provided on the interlayer dielectric layer 26, and the connecting via is connected to the source connecting portion 232 and the drain connecting portion 233; a first connecting conductor layer 27 is provided on the side of the interlayer dielectric layer 26 facing away from the base substrate 1, and the first connecting conductor layer 27 may include a source 271, a drain 272 and a data line (not shown in the figure), and the data line may be connected to the source 271, or may be a part of the data line as the source 271; the source 271 is connected to the source connecting portion 232 through the connecting via on the interlayer dielectric layer 26, and the drain 272 is connected to the drain connecting portion 233 through the connecting via on the interlayer dielectric layer 26.

[0130] In some other exemplary embodiments of the present disclosure, a passivation layer is provided on the side of the first connecting conductor layer 27 facing away from the base substrate 1, and connection vias are also provided on the passivation layer. A second connecting conductor layer is provided on the side of the passivation layer facing away from the base substrate 1. The second connecting conductor layer may include a second source electrode 271 and / or a second drain electrode 272. The second source electrode 271 and the second drain electrode 272 are connected to the source electrode 271 and the drain electrode 272 respectively through the connection vias in the passivation layer. Of course, a third connecting conductor layer, a fourth connecting conductor layer, and so on may also be provided as needed.

[0131] Please continue to refer to Figure 37 As shown, a first planarization layer 28 is provided on the side of the first connection conductor layer 27 facing away from the substrate 1. A connection via is provided 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.

[0132] It should be noted that the thin film transistors described in this specification are top-gate thin film transistors. In other exemplary embodiments of the present disclosure, the thin film transistors may also be bottom-gate or dual-gate thin film transistors, and their specific structures are not described in detail here. Moreover, when using thin film transistors with opposite polarities or when the current direction changes during circuit operation, the functions of the "source 271" and "drain 272" are sometimes interchangeable. Therefore, in this specification, the "source 271" and "drain 272" may be interchangeable.

[0133] Please continue to refer to Figure 37 As shown, a light-emitting substrate 3 is provided on the side of the first planarization layer 28 facing away from the base substrate 1 . The light-emitting substrate 3 may include a first electrode 31 , a pixel definition layer 32 , a light-emitting layer group 33 and a second electrode 34 .

[0134] Specifically, a first electrode 31 is provided on the side of the first planarization layer 28 facing away from the base substrate 1. The first electrode 31 is connected to the drain 272 of the driving backplane through a connecting via. The driving signal is provided to the first electrode 31 through the drain 272. The first electrode 31 can be an anode (pixel electrode).

[0135] A pixel definition layer 32 is provided on the side of the first electrode 31 facing away from the substrate 1. Figure 37 As shown, the pixel definition layer 32 is provided with an opening 321, which is connected to the first electrode 31, so that at least a portion 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 that can absorb photons, for example, the material of the pixel definition layer 32 can be black ink; the pixel definition layer 32 can absorb stray light and improve the display effect.

[0136] A light-emitting layer group 33 is disposed at least on the side of the first electrode 31 facing away from the substrate 1. That is, at least a portion of the light-emitting layer group 33 is located within the opening 321 and connected to the first electrode 31. A second electrode 34 is disposed on the side of the light-emitting layer group 33 facing away from the substrate 1. The second electrode 34 may be a cathode (common electrode). The light-emitting layer group 33 within each opening 321 emits light to form a sub-pixel 35, such that the orthographic projection of the sub-pixel 35 on the substrate 1 is the orthographic projection of the light-emitting layer group 33 within the opening 321 on the substrate 1.

[0137] It should be noted that since the side wall of the opening portion 321 of the pixel definition layer 32 is inclined, the sub-pixel 35 refers to the range of the bottom wall of the opening portion 321 of the pixel definition layer 32, that is, the sub-pixel 35 refers to the range enclosed by the edge of the opening portion 321 of the pixel definition layer 32 close to the base substrate 1.

[0138] The display backplane 10 may include a plurality of sub-pixels 35. Specifically, the display backplane 10 may include a plurality of first sub-pixels 351, a plurality of second sub-pixels 352, and a plurality of third sub-pixels 353. The first sub-pixel 351 may be a red sub-pixel, i.e., the first sub-pixel 351 may emit red light. The second sub-pixel 352 may be a green sub-pixel, i.e., the second sub-pixel 352 may emit green light. The third sub-pixel 353 may be a blue sub-pixel, i.e., the third sub-pixel 353 may emit blue light. Of course, in some other exemplary embodiments of the present disclosure, the display backplane 10 may include a plurality of fourth sub-pixels, and the fourth sub-pixels may be white sub-pixels, i.e., the fourth sub-pixels may emit white light. Alternatively, the first sub-pixel 351, the second sub-pixel 352, and the third sub-pixel 353 may all emit white light, which is then filtered by a red filter layer, a green filter layer, and a blue filter layer.

[0139] It should be noted that the limitation on the luminous color of each sub-pixel 35 is only an example. The present disclosure does not make any specific limitation on the luminous color of each sub-pixel 35. The following description will be made using the example of the first sub-pixel 351, the second sub-pixel 352, and the third sub-pixel 353 corresponding to the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B, respectively.

[0140] The light-emitting layer group 33 may include a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer, and an electron injection layer stacked in sequence. 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 other exemplary embodiments of the present disclosure, the light-emitting layer group 33 may include only the hole transport layer, the light-emitting layer, and the electron transport layer. The light-emitting layer group 33 may also have other structures, and its specific structure can be set as needed.

[0141] Holes are injected into the organic light-emitting layer from the first electrode 31 side, and electrons are injected into the organic light-emitting layer from the second electrode 34 side. Eventually, the holes and electrons recombine in the organic light-emitting layer to generate excitons. When the generated excitons relax from the excited state to the ground state, the OLED emits visible light.

[0142] The display backplane 10 may further include an encapsulation layer group 4, which is disposed on the side of the light-emitting substrate 3 facing away from the base substrate 1. For example, the encapsulation layer group 4 may include a first inorganic layer 41, an organic layer 42, and a second inorganic layer 43. The first inorganic layer 41 is disposed on the side of the second electrode 34 facing away from the base substrate 1. The first inorganic layer 41 may be made of silicon nitride (SiNx) or silicon oxynitride (SiNO), etc., and may be formed on the side of the second electrode 34 facing away from the base substrate 1 via chemical vapor deposition (CVD). The organic layer 42 is disposed on the side of the first inorganic layer 41 facing away from the base substrate 1. The organic layer 42 may be made of an organic material such as acrylic or epoxy. The second inorganic layer 43 is disposed on the side of the organic layer 42 facing away from the base substrate 1. The second inorganic layer 43 can be made of silicon nitride (SiNx) or silicon oxynitride (SiNO), etc. The second inorganic layer 43 can be formed by chemical vapor deposition (CVD) on the side of the organic layer 42 facing away from the base substrate 1. The encapsulation layer group 4 can encapsulate the light-emitting layer group 33 to isolate it from corrosion caused by water / oxygen in the air.

[0143] In some example embodiments of the present disclosure, reference is made to Figure 37 As shown, the display panel may further include a touch layer group 5, which is arranged on the side of the encapsulation layer group 4 away from the base substrate 1, that is, the touch layer group 5 is arranged on the light-emitting side of the display backplane 10. The touch layer group 5 enables the display panel to realize the touch function.

[0144] Reference Figure 1 – Figure 36As shown, the touch layer group 5 may include an insulating layer group 5z, which may include at least two insulating layers 5a stacked in sequence. Specifically, the touch layer group 5 may include a base layer 51, a first touch functional layer 52, a touch insulating layer 53, and a second touch functional layer 54. The base layer 51 is disposed on the side of the encapsulation layer group 4 away from the base substrate 1, the first touch functional layer 52 is disposed on the side of the base layer 51 away from the base substrate 1, the touch insulating layer 53 is disposed on the side of the first touch functional layer 52 away from the base substrate 1, and the second touch functional layer 54 is disposed on the side of the touch insulating layer 53 away from the base substrate 1. The touch layer group 5 may also include a protective layer 55, which is disposed on the side of the second touch functional layer 54 away from the base substrate 1. The protective layer 55 may protect the second touch functional layer 54. In this case, the insulating layer group 5z may include the base layer 51, the touch insulating layer 53, and the protective layer 55. The base layer 51, the touch insulating layer 53, and the protective layer 55 are all insulating layers 5a. Generally, the second touch function layer 54 may include a plurality of touch electrodes 541 arranged in an array, and the first touch function layer 52 may include a plurality of bridging portions 521 . The bridging portions 521 may connect two adjacent touch electrodes 541 through connecting vias provided on the touch insulating layer 53 .

[0145] The base layer 51, the touch insulating layer 53, and the protective layer 55 are all made of organic materials. For example, the base layer 51, the touch insulating layer 53, and the protective layer 55 can be made of epoxy resin, acrylic, or the like. This configuration ensures that the thickness of the base layer 51, the touch insulating layer 53, and the protective layer 55 meets the thickness requirements for the first filter layer 61, the second filter layer 62, and the third filter layer 63, and also meets the thickness requirements for the first, second, and third recesses, or the thickness requirements for the first, second, and third recesses. Furthermore, the refractive index of the organic material is easily adjustable, allowing the refractive index of the base layer 51, the touch insulating layer 53, and the protective layer 55 to meet the requirements. Furthermore, the etching process of the organic material is highly precise, and can meet the morphological requirements for the first, second, and third recesses, or the morphological requirements for the first, second, and third recesses.

[0146] Of course, in some other example embodiments of the present disclosure, the touch layer group 5 may also include a base layer 51, a first touch function layer 52 and a touch insulation layer 53. In this case, the insulation layer group 5z may include a base layer 51 and a touch insulation layer 53, and the base layer 51 and the touch insulation layer 53 are both insulation layers 5a.

[0147] Reference Figure 1 – Figure 27As shown, a first recessed portion 5z1 is provided on the insulating layer group 5z, and the orthographic projection of the first recessed portion 5z1 on the display backplane 10 at least partially overlaps with the first sub-pixel 351. A second recessed portion 5z2 is provided on the insulating layer group 5z, and the orthographic projection of the second recessed portion 5z2 on the display backplane 10 at least partially overlaps with the second sub-pixel 352.

[0148] The orthographic projection of the first recessed portion 5z1 on the display back panel 10 at least partially overlaps with the first sub-pixel 351. For example, the edge line of the orthographic projection of the first recessed portion 5z1 on the display back panel 10 may coincide with the edge line of the first sub-pixel 351, or the orthographic projection of the first recessed portion 5z1 on the display back panel 10 may cover and be larger than the first sub-pixel 351. In both cases, the orthographic projection of the first recessed portion 5z1 on the display back panel 10 completely covers the first sub-pixel 351.

[0149] Of course, in some other exemplary embodiments of the present disclosure, a portion of the orthographic projection of the first recessed portion 5z1 on the display backplane 10 may overlap with a portion of the first sub-pixel 351 .

[0150] The first recessed portion 5z1 may include side walls and a bottom wall, wherein the bottom wall is parallel to the display surface, and the side walls intersect the display surface. It should be noted that, since the side walls of the first recessed portion 5z1 are inclined, when compared with the first sub-pixel 351, the range of the orthographic projection of the first recessed portion 5z1 on the display backplane 10 refers to the orthographic projection of the side (bottom wall) of the first recessed portion 5z1 closest to the display backplane 10 on the display backplane 10, i.e., the orthographic projection of the bottom wall of the first recessed portion 5z1 on the display backplane 10 at least partially overlaps with the first sub-pixel 351. This ensures that when the orthographic projection of the first recessed portion 5z1 on the display backplane 10 completely covers the first sub-pixel 351, the side walls of the first recessed portion 5z1 do not overlap with the first sub-pixel 351, further ensuring the light converging effect and the uniformity of the light.

[0151] The orthographic projection of the second recessed portion 5z2 on the display back panel 10 at least partially overlaps with the second sub-pixel 352. For example, the edge line of the orthographic projection of the second recessed portion 5z2 on the display back panel 10 may coincide with the edge line of the second sub-pixel 352, or the orthographic projection of the second recessed portion 5z2 on the display back panel 10 may cover and be larger than the second sub-pixel 352. In both cases, the orthographic projection of the second recessed portion 5z2 on the display back panel 10 completely covers the second sub-pixel 352.

[0152] Of course, in some other exemplary embodiments of the present disclosure, a portion of the orthographic projection of the second recessed portion 5z2 on the display backplane 10 may overlap with a portion of the second sub-pixel 352 .

[0153] The second recessed portion 5z2 may include sidewalls and a bottom wall, wherein the bottom wall is parallel to the display surface, and the sidewalls intersect the display surface. It should be noted that, since the sidewalls of the second recessed portion 5z2 are inclined, when compared with the second sub-pixel 352, the range of the orthographic projection of the second recessed portion 5z2 on the display backplane 10 refers to the orthographic projection of the side (bottom wall) of the second recessed portion 5z2 that is closest to the display backplane 10. That is, the orthographic projection of the bottom wall of the second recessed portion 5z2 on the display backplane 10 at least partially overlaps with the second sub-pixel 352. This ensures that, when the orthographic projection of the second recessed portion 5z2 on the display backplane 10 completely covers the second sub-pixel 352, the sidewalls of the second recessed portion 5z2 do not overlap with the second sub-pixel 352, further ensuring the convergence of light and the uniformity of light.

[0154] Reference Figure 1 As shown, the first filter layer 61 is disposed on the light-emitting side of the display backplane 10. At least a portion of the first filter layer 61 is located within the first recessed portion 5z1. For example, a portion of the first filter layer 61 may be located within the first recessed portion 5z1, or the entire first filter layer 61 may be located within the first recessed portion 5z1. Generally, the thickness of the first filter layer 61 may be greater than or equal to the depth of the first recessed portion 5z1, thereby completely filling the first recessed portion 5z1. The first filter layer 61 may be a red filter layer, i.e., the first filter layer 61 only transmits red light.

[0155] The refractive index of the first filter layer 61 is greater than the refractive index of the insulating layer 5a in which the first recess 5z1 is provided. Specifically, the refractive index of the first filter layer 61 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 61 can be 1.68, 1.7, 1.73, or the like. The refractive index of the insulating layer 5a in which the first recess 5z1 is provided is greater than or equal to 1.45 and less than or equal to 1.55. For example, the refractive index of the insulating layer 5a in which the first recess 5z1 is provided can be 1.47, 1.5, 1.53, or the like.

[0156] Reference Figure 1 As shown, the light is emitted from the first filter layer 61 to the insulating layer 5a where the first recessed portion 5z1 is set, which is from a denser medium to a less dense medium. Therefore, the light is easily totally reflected at the interface between the first filter layer 61 and the side wall of the first recessed portion 5z1. The side wall of the first recessed portion 5z1 will cause the inclined outgoing light to be totally reflected to form totally reflected light, change the angle of the outgoing light, and thus make the totally reflected light more convergent and emitted from the front of the display panel, thereby improving the light output efficiency of the front of the display panel and reducing the light output efficiency of the side of the display panel, increasing the anti-peeping effect, and reducing the display power consumption.

[0157] Moreover, when the ambient light is strong, only red light enters the display panel after being filtered by the first filter layer 61 , and only red light exits the display panel after being reflected by the display panel, thereby achieving the purpose of anti-glare.

[0158] The second filter layer 62 is disposed on the light-emitting side of the display backplane 10. At least a portion of the second filter layer 62 is located within the second recessed portion 5z2. For example, a portion of the second filter layer 62 may be located within the second recessed portion 5z2, or the entire second filter layer 62 may be located within the second recessed portion 5z2. Generally, the thickness of the second filter layer 62 may be greater than or equal to the depth of the second recessed portion 5z2, thereby completely filling the second recessed portion 5z2. The second filter layer 62 may be a green filter layer, i.e., the second filter layer 62 only transmits green light.

[0159] The refractive index of the second filter layer 62 is greater than the refractive index of the insulating layer 5a in which the second recess 5z2 is provided. Specifically, the refractive index of the second filter layer 62 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 62 can be 1.58, 1.6, 1.62, etc. The refractive index of the insulating layer 5a in which the second recess 5z2 is provided is greater than or equal to 1.45 and less than or equal to 1.55. For example, the refractive index of the insulating layer 5a in which the second recess 5z2 is provided can be 1.47, 1.5, 1.53, etc.

[0160] Reference Figure 1 As shown, the light is emitted from the second filter layer 62 to the insulating layer 5a where the second recessed portion 5z2 is set, which is from a denser medium to a less dense medium. Therefore, the light is easily totally reflected at the interface between the second filter layer 62 and the side wall of the second recessed portion 5z2. The side wall of the second recessed portion 5z2 will cause the inclined outgoing light to be totally reflected to form totally reflected light, change the angle of the outgoing light, and thus make the totally reflected light more convergent and emitted from the front of the display panel, thereby improving the light output efficiency of the front of the display panel and reducing the light output efficiency of the side of the display panel, increasing the anti-peeping effect, and reducing the display power consumption.

[0161] Moreover, when the ambient light is strong, only green light enters the display panel after being filtered by the second filter layer 62 . After being reflected by the display panel, only green light exits the display panel, thereby achieving the purpose of anti-glare.

[0162] However, since the refractive index of the second filter layer 62 is different from that of the first filter layer 61, the critical angle of total reflection between the first filter layer 61 and the first recessed portion 5z1 is different from the critical angle of total reflection between the second filter layer 62 and the second recessed portion 5z2, resulting in different gains in the light output efficiency of sub-pixels 35 of different colors, which leads to color deviation.

[0163] In this example embodiment, the area of ​​the total reflection surface of the recessed portion corresponding to the one with the larger refractive index between the first filter layer 61 and the second filter layer 62 is small. Specifically, when the refractive index of the second filter layer 62 is smaller than the refractive index of the first filter layer 61, the total reflection interface of the second recessed portion 5z2 is larger than the total reflection interface of the first recessed portion 5z1. Since the refractive index of the second filter layer 62 is smaller than that of the first filter layer 61, the critical angle of total reflection between the first filter layer 61 and the first recessed portion 5z1 is smaller, and more light is totally reflected, while the critical angle of total reflection between the second filter layer 62 and the second recessed portion 5z2 is larger, and less light is totally reflected, resulting in a lower light output efficiency of the second sub-pixel 352; the total reflection interface of the second recessed portion 5z2 is larger than the total reflection interface of the first recessed portion 5z1, thereby increasing the light that is totally reflected between the second filter layer 62 and the second recessed portion 5z2, thereby improving the light output efficiency of the second sub-pixel 352 and compensating for the lower refractive index of the second filter layer 62.

[0164] Of course, in other exemplary embodiments of the present disclosure, the refractive index of the second filter layer 62 may be greater than that of the first filter layer 61. In this case, the total internal reflection interface of the second recessed portion 5z2 is smaller than that of the first recessed portion 5z1. Because the refractive index of the second filter layer 62 is greater than that of the first filter layer 61, the critical angle for total internal reflection between the second filter layer 62 and the second recessed portion 5z2 is smaller, resulting in more light being totally reflected, while the critical angle for total internal reflection between the first filter layer 61 and the first recessed portion 5z1 is larger, resulting in less light being totally reflected. The total internal reflection interface of the first recessed portion 5z1 is larger than that of the second recessed portion 5z2, thereby increasing the amount of light being totally reflected between the first filter layer 61 and the first recessed portion 5z1, thereby improving the light extraction efficiency of the first sub-pixel 351 and compensating for the lower refractive index of the first filter layer 61.

[0165] In some example embodiments of the present disclosure, reference is made to Figure 1 As shown, a third recessed portion 5z3 is provided on the insulating layer group 5z, and the orthographic projection of the third recessed portion 5z3 on the display backplane 10 at least partially overlaps with the third sub-pixel 353.

[0166] The orthographic projection of the third recessed portion 5z3 on the display back panel 10 at least partially overlaps with the third sub-pixel 353. For example, the edge line of the orthographic projection of the third recessed portion 5z3 on the display back panel 10 may coincide with the edge line of the third sub-pixel 353, or the orthographic projection of the third recessed portion 5z3 on the display back panel 10 may cover and be larger than the third sub-pixel 353. In both cases, the orthographic projection of the third recessed portion 5z3 on the display back panel 10 completely covers the third sub-pixel 353.

[0167] Of course, in some other exemplary embodiments of the present disclosure, a portion of the orthographic projection of the third recessed portion 5z3 on the display backplane 10 may overlap with a portion of the third sub-pixel 353 .

[0168] The third recessed portion 5z3 may include sidewalls and a bottom wall, wherein the bottom wall is parallel to the display surface, and the sidewalls intersect the display surface. It should be noted that, since the sidewalls of the third recessed portion 5z3 are inclined, when compared with the third sub-pixel 353, the range of the orthographic projection of the third recessed portion 5z3 on the display backplane 10 refers to the orthographic projection of the side (bottom wall) of the third recessed portion 5z3 closest to the display backplane 10 on the display backplane 10, i.e., the orthographic projection of the bottom wall of the third recessed portion 5z3 on the display backplane 10 at least partially overlaps with the third sub-pixel 353. This ensures that, when the orthographic projection of the third recessed portion 5z3 on the display backplane 10 completely covers the third sub-pixel 353, the sidewalls of the third recessed portion 5z3 do not overlap with the third sub-pixel 353, further ensuring the convergence of light and the uniformity of light.

[0169] The third filter layer 63 is disposed on the light-emitting side of the display backplane 10. At least a portion of the third filter layer 63 is located within the third recessed portion 5z3. For example, a portion of the third filter layer 63 may be located within the third recessed portion 5z3, or the entire third filter layer 63 may be located within the third recessed portion 5z3. Generally, the thickness of the third filter layer 63 may be greater than or equal to the depth of the third recessed portion 5z3, thereby completely filling the third recessed portion 5z3. The third filter layer 63 may be a blue filter layer, i.e., the third filter layer 63 only transmits blue light.

[0170] It should be noted that the above-mentioned limitations on the filter colors of the various filter layers are merely examples. The present disclosure does not impose specific limitations on the filter colors of the various filter layers. The specific implementation is described using an example in which the first filter layer 61 , the second filter layer 62 , and the third filter layer 63 correspond to a red filter layer, a green filter layer, and a blue filter layer, respectively.

[0171] The refractive index of the third filter layer 63 is greater than the refractive index of the insulating layer 5a in which the third recess 5z3 is provided. Specifically, the refractive index of the third filter layer 63 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 63 can be 1.58, 1.6, 1.62, or the like. The refractive index of the insulating layer 5a in which the third recess 5z3 is provided is greater than or equal to 1.45 and less than or equal to 1.55. For example, the refractive index of the insulating layer 5a in which the second recess 5z2 is provided can be 1.47, 1.5, 1.53, or the like.

[0172] Reference Figure 1As shown, the light emitted from the third filter layer 63 to the insulating layer 5a where the third recessed portion 5z3 is provided is emitted from a denser medium to a less dense medium. Therefore, the light is easily totally reflected at the interface between the third filter layer 63 and the side wall of the third recessed portion 5z3. The side wall of the third recessed portion 5z3 will cause the inclined outgoing light to be totally reflected to form totally reflected light, thereby changing the angle of the outgoing light, thereby making the totally reflected light more convergent and emitted from the front of the display panel, thereby improving the light output efficiency from the front of the display panel, reducing the light output efficiency from the side of the display panel, increasing the anti-peeping effect, and reducing the display power consumption.

[0173] Moreover, when the ambient light is strong, only blue light enters the display panel after being filtered by the third filter layer 63 . After being reflected by the display panel, only blue light exits the display panel, thereby achieving the purpose of anti-glare.

[0174] However, since the refractive index of the third filter layer 63 is different from that of the first filter layer 61, the critical angle of total reflection between the first filter layer 61 and the first recessed portion 5z1 is different from the critical angle of total reflection between the third filter layer 63 and the third recessed portion 5z3, resulting in different gains in the light output efficiency of sub-pixels 35 of different colors, which leads to color deviation.

[0175] In this example embodiment, the area of ​​the total reflection surface of the recessed portion corresponding to the one with the larger refractive index between the first filter layer 61 and the third filter layer 63 is small. Specifically, when the refractive index of the third filter layer 63 is smaller than the refractive index of the first filter layer 61, the total reflection interface of the third recessed portion 5z3 is larger than the total reflection interface of the first recessed portion 5z1. Since the refractive index of the third filter layer 63 is smaller than that of the first filter layer 61, the critical angle of total reflection between the first filter layer 61 and the first recessed portion 5z1 is smaller, and more light is totally reflected, while the critical angle of total reflection between the third filter layer 63 and the third recessed portion 5z3 is larger, and less light is totally reflected, resulting in a lower light output efficiency of the third sub-pixel 353; the total reflection interface of the third recessed portion 5z3 is larger than the total reflection interface of the first recessed portion 5z1, thereby increasing the light that is totally reflected between the third filter layer 63 and the third recessed portion 5z3, thereby improving the light output efficiency of the third sub-pixel 353 and compensating for the lower refractive index of the third filter layer 63.

[0176] Of course, in other exemplary embodiments of the present disclosure, the refractive index of the third filter layer 63 may be greater than that of the first filter layer 61. In this case, the total internal reflection interface of the third recessed portion 5z3 is smaller than that of the first recessed portion 5z1. Because the refractive index of the third filter layer 63 is greater than that of the first filter layer 61, the critical angle for total internal reflection between the third filter layer 63 and the third recessed portion 5z3 is smaller, resulting in more light being totally reflected. Meanwhile, the critical angle for total internal reflection between the first filter layer 61 and the first recessed portion 5z1 is larger, resulting in less light being totally reflected. The total internal reflection interface of the first recessed portion 5z1 is larger than that of the third recessed portion 5z3, thereby increasing the amount of light being totally reflected between the first filter layer 61 and the first recessed portion 5z1, thereby improving the light extraction efficiency of the first sub-pixel 351 and compensating for the lower refractive index of the first filter layer 61.

[0177] Reference Figure 1-Figure 27 As shown, the first recessed portion 5z1 , the second recessed portion 5z2 and the third recessed portion 5z3 may be provided in the same insulating layer 5a.

[0178] Reference Figures 1-13 As shown, a first recessed portion 5z1, a second recessed portion 5z2 and a third recessed portion 5z3 are provided on an insulating layer 5a; for example, referring to Figure 1-Figure 3 As shown, the first recessed portion 5z1, the second recessed portion 5z2 and the third recessed portion 5z3 can be provided in the base layer 51; the specific process is to prepare the base layer 51 and pattern it to form the first recessed portion 5z1, the second recessed portion 5z2 and the third recessed portion 5z3, and then prepare the first filter layer 61, the second filter layer 62 and the third filter layer 63, the first touch function layer 52, the touch insulation layer 53, the second touch function layer 54 and the protective layer 55 in sequence.

[0179] The first filter layer 61, the second filter layer 62, and the third filter layer 63 do not completely cover the top surface of the base layer 51 facing away from the display backplane 10. Specifically, the ring width of the portion of the first filter layer 61 that overlaps with the side of the base layer 51 facing away from the display backplane 10 is greater than or equal to 0 and less than or equal to 2 microns. For example, the ring width of the portion of the first filter layer 61 that overlaps with the side of the base layer 51 facing away from the display backplane 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc. The ring width of the portion of the second filter layer 62 that overlaps with the side of the base layer 51 facing away from the display backplane 10 is greater than or equal to 0 and less than or equal to 2 microns. For example, the ring width of the portion of the second filter layer 62 that overlaps with the side of the base layer 51 facing away from the display backplane 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc. The ring width of the overlapping portion of the third filter layer 63 and the base layer 51 facing away from the display back panel 10 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 63 and the base layer 51 facing away from the display back panel 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc.

[0180] Reference Figure 4-Figure 8 As shown, the first recessed portion 5z1, the second recessed portion 5z2 and the third recessed portion 5z3 can be provided in the touch insulating layer 53; the specific process is to prepare the base layer 51, the first touch functional layer 52, and the touch insulating layer 53 in sequence, and pattern the touch insulating layer 53 to form the first recessed portion 5z1, the second recessed portion 5z2 and the third recessed portion 5z3, and then prepare the first filter layer 61, the second filter layer 62 and the third filter layer 63, the second touch functional layer 54 and the protective layer 55 in sequence.

[0181] The first filter layer 61, the second filter layer 62, and the third filter layer 63 do not completely cover the top surface of the touch insulating layer 53 facing away from the display backplane 10. Specifically, the ring width of the portion where the first filter layer 61 overlaps with the surface of the touch insulating layer 53 facing away from the display backplane 10 is greater than or equal to 0 and less than or equal to 2 microns. For example, the ring width of the portion where the first filter layer 61 overlaps with the surface of the touch insulating layer 53 facing away from the display backplane 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, and so on. The ring width of the portion of the second filter layer 62 that overlaps the surface of the touch insulating layer 53 facing away from the display backplane 10 is greater than or equal to 0 and less than or equal to 2 microns. For example, the ring width of the portion of the second filter layer 62 that overlaps the surface of the touch insulating layer 53 facing away from the display backplane 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc. The ring width of the portion of the third filter layer 63 that overlaps the surface of the touch insulating layer 53 facing away from the display backplane 10 is greater than or equal to 0 and less than or equal to 2 microns. For example, the ring width of the portion of the third filter layer 63 that overlaps the surface of the touch insulating layer 53 facing away from the display backplane 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc.

[0182] Reference Figures 9-13 As shown, the first recessed portion 5z1, the second recessed portion 5z2, and the third recessed portion 5z3 can be provided in the protective layer 55. The specific process is to sequentially form the base layer 51, the first touch function layer 52, the touch insulation layer 53, the second touch function layer 54, and the protective layer 55, and then pattern the protective layer 55 to form the first recessed portion 5z1, the second recessed portion 5z2, and the third recessed portion 5z3. Finally, the first filter layer 61, the second filter layer 62, and the third filter layer 63 are sequentially formed.

[0183] The first filter layer 61, the second filter layer 62, and the third filter layer 63 do not completely cover the top surface of the protective layer 55 facing away from the display backplane 10. Specifically, the ring width of the portion of the first filter layer 61 that overlaps with the side of the protective layer 55 facing away from the display backplane 10 is greater than or equal to 0 and less than or equal to 2 microns. For example, the ring width of the portion of the first filter layer 61 that overlaps with the side of the protective layer 55 facing away from the display backplane 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc. The ring width of the portion of the second filter layer 62 that overlaps with the side of the protective layer 55 facing away from the display backplane 10 is greater than or equal to 0 and less than or equal to 2 microns. For example, the ring width of the portion of the second filter layer 62 that overlaps with the side of the protective layer 55 facing away from the display backplane 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc. The ring width of the overlapping portion of the third filter layer 63 and the protective layer 55 facing away from the display back panel 10 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 63 and the protective layer 55 facing away from the display back panel 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc.

[0184] Reference Figures 14-27 As shown, a first recessed portion 5z1, a second recessed portion 5z2 and a third recessed portion 5z3 are provided on two adjacent insulating layers 5a; for example, referring to Figures 14-20As shown, the first recessed portion 5z1, the second recessed portion 5z2 and the third recessed portion 5z3 can be provided in the base layer 51 and the touch insulating layer 53. Specifically, the first sub-recessed portion 5z11, the second sub-recessed portion 5z21 and the third sub-recessed portion 5z31 can be provided on the base layer 51, and the fourth sub-recessed portion 5z12, the fifth sub-recessed portion 5z22 and the sixth sub-recessed portion 5z32 can be provided on the touch insulating layer 53. The first sub-recessed portion 5z11 is connected to the fourth sub-recessed portion 5z12 to form the first recessed portion 5z1, that is, the first recessed portion 5z1 can include the fourth sub-recessed portion 5z12 and the first sub-recessed portion 5z11 that are connected to each other; the second sub-recessed portion 5z21 is connected to the fifth sub-recessed portion 5z22 to form the second recessed portion 5z2. That is, the second recessed portion 5z2 may include a fifth sub-recessed portion 5z22 and a second sub-recessed portion 5z21 that are interconnected; the third sub-recessed portion 5z31 is connected to the sixth sub-recessed portion 5z32 to form a third recessed portion 5z3, that is, the third recessed portion 5z3 includes a sixth sub-recessed portion 5z32 and a third sub-recessed portion 5z31 that are interconnected; the specific process is to prepare the base layer 51, the first touch function layer 52, and the touch insulation layer 53 in sequence, and pattern the touch insulation layer 53 and the base layer 51 to form the first recessed portion 5z1, the second recessed portion 5z2 and the third recessed portion 5z3, and then prepare the first filter layer 61, the second filter layer 62 and the third filter layer 63, the second touch function layer 54 and the protective layer 55 in sequence.

[0185] The first filter layer 61, the second filter layer 62, and the third filter layer 63 do not completely cover the top surface of the touch insulating layer 53 facing away from the display backplane 10. Specifically, the ring width of the portion where the first filter layer 61 overlaps with the surface of the touch insulating layer 53 facing away from the display backplane 10 is greater than or equal to 0 and less than or equal to 2 microns. For example, the ring width of the portion where the first filter layer 61 overlaps with the surface of the touch insulating layer 53 facing away from the display backplane 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, and so on. The ring width of the portion of the second filter layer 62 that overlaps the surface of the touch insulating layer 53 facing away from the display backplane 10 is greater than or equal to 0 and less than or equal to 2 microns. For example, the ring width of the portion of the second filter layer 62 that overlaps the surface of the touch insulating layer 53 facing away from the display backplane 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc. The ring width of the portion of the third filter layer 63 that overlaps the surface of the touch insulating layer 53 facing away from the display backplane 10 is greater than or equal to 0 and less than or equal to 2 microns. For example, the ring width of the portion of the third filter layer 63 that overlaps the surface of the touch insulating layer 53 facing away from the display backplane 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc.

[0186] Reference Figure 21-Figure 27 As shown, the first recessed portion 5z1, the second recessed portion 5z2 and the third recessed portion 5z3 can be provided in the touch insulating layer 53 and the protective layer 55. Specifically, a first sub-recessed portion 5z11, a second sub-recessed portion 5z21 and a third sub-recessed portion 5z31 can be provided on the touch insulating layer 53, and a fourth sub-recessed portion 5z12, a fifth sub-recessed portion 5z22 and a sixth sub-recessed portion 5z32 can be provided on the protective layer 55. The first sub-recessed portion 5z11 is connected to the fourth sub-recessed portion 5z12 to form the first recessed portion 5z1, that is, the first recessed portion 5z1. The recess 5z1 may include a fourth sub-recess 5z12 and a first sub-recess 5z11 that are interconnected; the second sub-recess 5z21 is connected to the fifth sub-recess 5z22 to form a second recess 5z2, that is, the second recess 5z2 may include a fifth sub-recess 5z22 and a second sub-recess 5z21 that are interconnected; the third sub-recess 5z31 is connected to the sixth sub-recess 5z32 to form a third recess 5z3, that is, the third recess 5z3 includes a sixth sub-recess 5z32 and a third sub-recess 5z31 that are interconnected. The specific process is to prepare the base layer 51, the first touch function layer 52, the touch insulation layer 53, the second touch function layer 54 and the protective layer 55 in sequence, and pattern the protective layer 55 and the touch insulation layer 53 to form the first recessed portion 5z1, the second recessed portion 5z2 and the third recessed portion 5z3, and then prepare the first filter layer 61, the second filter layer 62 and the third filter layer 63 in sequence.

[0187] The first filter layer 61, the second filter layer 62, and the third filter layer 63 do not completely cover the top surface of the protective layer 55 facing away from the display backplane 10. Specifically, the ring width of the portion of the first filter layer 61 that overlaps with the side of the protective layer 55 facing away from the display backplane 10 is greater than or equal to 0 and less than or equal to 2 microns. For example, the ring width of the portion of the first filter layer 61 that overlaps with the side of the protective layer 55 facing away from the display backplane 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc. The ring width of the portion of the second filter layer 62 that overlaps with the side of the protective layer 55 facing away from the display backplane 10 is greater than or equal to 0 and less than or equal to 2 microns. For example, the ring width of the portion of the second filter layer 62 that overlaps with the side of the protective layer 55 facing away from the display backplane 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc. The ring width of the overlapping portion of the third filter layer 63 and the protective layer 55 facing away from the display back panel 10 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 63 and the protective layer 55 facing away from the display back panel 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc.

[0188] The orthographic projection of the first filter layer 61 on the display backplane 10 does not overlap with the orthographic projection of the bridging portion 521 and the touch electrode 541 on the display backplane 10; the orthographic projection of the second filter layer 62 on the display backplane 10 does not overlap with the orthographic projection of the bridging portion 521 and the touch electrode 541 on the display backplane 10; and the orthographic projection of the third filter layer 63 on the display backplane 10 does not overlap with the orthographic projection of the bridging portion 521 and the touch electrode 541 on the display backplane 10. Such arrangement ensures that no matter in which layer the first recessed portion 5z1, the second recessed portion 5z2 and the third recessed portion 5z3 are arranged, the plane formed by the bridge portion 521 and the touch electrode 541 is relatively flat, thereby avoiding the uneven plane formed by the bridge portion 521 and the touch electrode 541 caused by the first filter layer 61, the second filter layer 62 and the third filter layer 63 being arranged between the touch layer group 5, which would cause the bridge portion 521 and the touch electrode 541 to climb and break, thereby ensuring the touch effect.

[0189] Reference Figure 1-Figure 27 As shown, the first recessed portion 5z1 corresponds to the first sub-pixel 351 one-to-one. Specifically, the number of the first recessed portions 5z1 is the same as the number of the first sub-pixels 351, and the shape of the first recessed portion 5z1 is the same as the shape of the first sub-pixel 351, that is, the first recessed portion 5z1 is set to a shape that matches the first sub-pixel 351. For example, if the first sub-pixel 351 is set to a circle, the first recessed portion 5z1 is also set to a circle; if the first sub-pixel 351 is set to a rectangle, the first recessed portion 5z1 is also set to a rectangle; of course, in other example embodiments of the present disclosure, the shape of the first sub-pixel 351 and the shape of the first recessed portion 5z1 can also be other shapes, which are not explained here one by one.

[0190] The distance between the sidewall of the first recessed portion 5z1 and the center of the first sub-pixel 351 in the first direction X increases as the height of the sidewall of the first recessed portion 5z1 in the second direction Y increases, so that the first recessed portion 5z1 forms a structure in which the opening is larger than the bottom.

[0191] It should be noted that in the present disclosure, the second direction Y is perpendicular to the display surface of the display backplane 10, that is, the second direction Y is perpendicular to the side of the display backplane 10 where the touch layer group 5 is set; the first direction X is parallel to the display surface of the display backplane 10, that is, the first direction X is parallel to the side of the display backplane 10 where the touch layer group 5 is set.

[0192] In some exemplary embodiments of the present disclosure, the sidewall of the first recessed portion 5z1 may include a curved surface; the sidewall of the first recessed portion 5z1 may include a first portion, a second portion, and a third portion that are smoothly connected in sequence, the first portion being closer to the display back plate 10 than the third portion, the second portion being configured as an inclined surface, the first portion and the third portion being configured as arcuate surfaces, the first portion being configured as a recessed shape, and the third portion being configured as a protruding shape; specifically, the portion of the sidewall of the first recessed portion 5z1 that is close to the display back plate 10 may be an arcuate surface, the middle portion of the sidewall of the first recessed portion 5z1 may be configured as an inclined surface, and the portion of the sidewall of the first recessed portion 5z1 that is away from the display back plate 10 may be an arcuate surface. In other exemplary embodiments of the present disclosure, the sidewall of the first recessed portion 5z1 may be configured as an inclined surface, or the sidewall of the first recessed portion 5z1 may only include the smoothly connected first and third portions, but the sidewall of the first recessed portion 5z1 is generally inclined.

[0193] The angle between the sidewall of the first recessed portion 5z1 and the first reference plane is greater than or equal to 55° and less than or equal to 85°. For example, the angle between the sidewall of the first recessed portion 5z1 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 backplane 10 on which the touch layer assembly 5 is disposed.

[0194] If the angle between the side wall of the first recessed portion 5z1 and the first reference plane is too large, so that the side wall of the first recessed portion 5z1 is almost perpendicular to the display back panel 10, when the first filter layer 61 is filled into the first recessed portion 5z1, it cannot be filled to the corner of the bottom wall of the first recessed portion 5z1, that is, gaps are easily formed at the corner of the bottom wall of the first recessed portion 5z1, and total reflection cannot be achieved well. The total reflection surface is lost, and the converging effect of the outgoing light cannot be achieved well.

[0195] If the angle between the side wall of the first recessed portion 5z1 and the first reference plane is too small, making the side wall of the first recessed portion 5z1 relatively flat, the angle of most of the outgoing light emitted from the first sub-pixel 351 may be greater than the angle between the side wall of the first recessed portion 5z1 and the first reference plane, so that the outgoing light cannot reach the side wall of the first recessed portion 5z1, thereby failing to achieve total reflection and failing to achieve the converging effect on the outgoing light.

[0196] The above numerical range can ensure that the light emitted from the first sub-pixel 351 with a large inclination angle can be totally reflected, thereby achieving a converging effect on the emitted light.

[0197] Reference Figure 2 、 Figure 5 、 Figure 7 、 Figure 10 、 Figure 12 、 Figure 15 、 Figure 19 、 Figure 22 、 Figure 26 As shown, the second recessed portion 5z2 corresponds to the second sub-pixel 352 one-to-one. Specifically, the number of the second recessed portions 5z2 is the same as the number of the second sub-pixels 352, and the shape of the second recessed portion 5z2 is the same as the shape of the second sub-pixel 352, that is, the second recessed portion 5z2 is set to a shape that matches the second sub-pixel 352. For example, if the second sub-pixel 352 is set to a circle, the second recessed portion 5z2 is also set to a circle; if the second sub-pixel 352 is set to a rectangle, the second recessed portion 5z2 is also set to a rectangle; of course, in other example embodiments of the present disclosure, the shape of the second sub-pixel 352 and the shape of the second recessed portion 5z2 can also be other shapes, which are not explained here one by one.

[0198] The distance between the side wall of the second recessed portion 5z2 and the center of the second sub-pixel 352 in the first direction X increases as the height of the side wall of the second recessed portion 5z2 in the second direction Y increases, so that the second recessed portion 5z2 forms a structure with an opening larger than the bottom.

[0199] In some exemplary embodiments of the present disclosure, the sidewall of the second recessed portion 5z2 may include a curved surface; the sidewall of the second recessed portion 5z2 may include a fourth portion, a fifth portion, and a sixth portion that are smoothly connected in sequence, the fourth portion being closer to the display back plate 10 than the sixth portion, the fifth portion being configured as an inclined surface, the fourth portion and the sixth portion being configured as arcuate surfaces, the fourth portion being configured as a recessed shape, and the sixth portion being configured as a protruding shape; specifically, the portion of the sidewall of the second recessed portion 5z2 that is close to the display back plate 10 may be an arcuate surface, the middle portion of the sidewall of the second recessed portion 5z2 may be configured as an inclined surface, and the portion of the sidewall of the second recessed portion 5z2 that is away from the display back plate 10 may be an arcuate surface. In other exemplary embodiments of the present disclosure, the sidewall of the second recessed portion 5z2 may be configured as an inclined surface, or the sidewall of the second recessed portion 5z2 may only include the smoothly connected fourth and sixth portions, but the sidewall of the second recessed portion 5z2 is generally configured as an inclined surface.

[0200] The angle between the side wall of the second recessed portion 5z2 and the first reference plane is greater than or equal to 55° and less than or equal to 85°. For example, the angle between the side wall of the second recessed portion 5z2 and the first reference plane can be 55°, 57°, 60°, 63°, 65°, 68°, 70°, 72°, 75°, 77°, 80°, 82°, etc.

[0201] If the angle between the side wall of the second recessed portion 5z2 and the first reference plane is too large, so that the side wall of the second recessed portion 5z2 is almost perpendicular to the display back panel 10, when the second filter layer 62 is filled into the second recessed portion 5z2, it cannot be filled to the corner of the bottom wall of the second recessed portion 5z2, that is, gaps are easily formed at the corner of the bottom wall of the second recessed portion 5z2, and total reflection cannot be achieved well. The total reflection surface is lost, and the converging effect of the outgoing light cannot be achieved well.

[0202] If the angle between the side wall of the second recessed portion 5z2 and the first reference plane is too small, making the side wall of the second recessed portion 5z2 relatively flat, the angle of most of the outgoing light emitted from the second sub-pixel 352 may be greater than the angle between the side wall of the second recessed portion 5z2 and the first reference plane, making it impossible for the outgoing light to reach the side wall of the second recessed portion 5z2, thereby failing to achieve total reflection and failing to achieve the converging effect on the outgoing light.

[0203] The above numerical range can ensure that the light emitted from the second sub-pixel 352 with a large inclination angle can be totally reflected, thereby achieving a converging effect on the emitted light.

[0204] Reference Figure 2 、 Figure 5 、 Figure 7 、 Figure 10 、 Figure 12 、 Figure 15 、 Figure 19 、 Figure 22 、 Figure 26 As shown, the third recessed portion 5z3 corresponds to the third sub-pixel 353 one-to-one. Specifically, the number of the third recessed portions 5z3 is the same as the number of the third sub-pixels 353, and the shape of the third recessed portion 5z3 is the same as the shape of the third sub-pixel 353, that is, the third recessed portion 5z3 is set to a shape that matches the third sub-pixel 353. For example, if the third sub-pixel 353 is set to a circle, the third recessed portion 5z3 is also set to a circle; if the third sub-pixel 353 is set to a rectangle, the third recessed portion 5z3 is also set to a rectangle; of course, in other example embodiments of the present disclosure, the shape of the third sub-pixel 353 and the shape of the third recessed portion 5z3 can also be other shapes, which are not explained here one by one.

[0205] The distance from the center of the third sub-pixel 353 of the sidewall of the third recessed portion 5z3 in the first direction X increases with the height of the sidewall of the third recessed portion 5z3 in the second direction Y, so that the third recessed portion 5z3 forms a structure with an opening larger than the bottom.

[0206] In some exemplary embodiments of the present disclosure, the sidewall of the third recessed portion 5z3 may include a curved surface; the sidewall of the third recessed portion 5z3 may include a seventh portion, an eighth portion, and a ninth portion that are smoothly connected in sequence, the seventh portion being closer to the display back plate 10 than the ninth portion, the eighth portion being configured as an inclined surface, the seventh portion and the ninth portion being configured as arcuate surfaces, the seventh portion being configured as a recessed shape, and the ninth portion being configured as a protruding shape; specifically, the portion of the sidewall of the third recessed portion 5z3 that is close to the display back plate 10 may be an arcuate surface, the middle portion of the sidewall of the third recessed portion 5z3 may be configured as an inclined surface, and the portion of the sidewall of the third recessed portion 5z3 that is away from the display back plate 10 may be an arcuate surface. In other exemplary embodiments of the present disclosure, the sidewall of the third recessed portion 5z3 may be configured as an inclined surface, or the sidewall of the third recessed portion 5z3 may only include the smoothly connected seventh and ninth portions, but the sidewall of the third recessed portion 5z3 is generally inclined.

[0207] The angle between the side wall of the third recess 5z3 and the first reference plane is greater than or equal to 55° and less than or equal to 85°. For example, the angle between the side wall of the third recess 5z3 and the first reference plane can be 55°, 57°, 60°, 63°, 65°, 68°, 70°, 72°, 75°, 77°, 80°, 82°, etc.

[0208] If the angle between the side wall of the third recessed portion 5z3 and the first reference plane is too large, so that the side wall of the third recessed portion 5z3 is almost perpendicular to the display back panel 10, when the third filter layer 63 is filled into the third recessed portion 5z3, it cannot be filled to the corner of the bottom wall of the third recessed portion 5z3, that is, gaps are easily formed at the corner of the bottom wall of the third recessed portion 5z3, and total reflection cannot be achieved well. The total reflection surface is lost, and the converging effect of the outgoing light cannot be achieved well.

[0209] If the angle between the side wall of the third recessed portion 5z3 and the first reference plane is too small, making the side wall of the third recessed portion 5z3 relatively flat, the angle of most of the outgoing light emitted from the third sub-pixel 353 may be greater than the angle between the side wall of the third recessed portion 5z3 and the first reference plane, so that the outgoing light cannot reach the side wall of the third recessed portion 5z3, thereby failing to achieve total reflection and failing to achieve the converging effect on the outgoing light.

[0210] The above numerical range can ensure that the light emitted from the third sub-pixel 353 with a large inclination angle can be totally reflected, thereby achieving a converging effect on the emitted light.

[0211] In this case, refer to Figure 2 、 Figure 5 、 Figure 10 、 Figure 15 、 Figure 19 、 Figure 22 、 Figure 26 As shown, the first recessed portion 5z1 can be set as a blind hole that does not penetrate the insulating layer 5a, that is, an insulating layer 5a is also provided at the bottom of the first recessed portion 5z1, but the thickness of the insulating layer 5a at the first recessed portion 5z1 is less than the thickness of other parts; the second recessed portion 5z2 can be set as a through hole that penetrates the insulating layer 5a, and the third recessed portion 5z3 can be set as a through hole that penetrates the insulating layer 5a.

[0212] Such arrangement makes the depth of the first recessed portion 5z1 smaller than the depth of the second recessed portion 5z2, and the depth of the first recessed portion 5z1 smaller than the depth of the third recessed portion 5z3, so that the area of ​​the side wall of the first recessed portion 5z1 is smaller than the area of ​​the side wall of the second recessed portion 5z2, and the area of ​​the side wall of the first recessed portion 5z1 is smaller than the area of ​​the side wall of the third recessed portion 5z3, thereby reducing the interface of the first recessed portion 5z1 that produces total reflection, and thereby reducing the light output efficiency of the first sub-pixel 351, which can reduce or even avoid color deviation caused by different gains in the light output efficiency of sub-pixels 35 of different colors.

[0213] Reference Figure 1 、 Figure 3 、 Figure 4 、 Figure 6 、 Figure 8 、 Figure 9 、 Figure 11 、 Figure 13 、 Figure 14 、 Figure 16-18 、 Figure 20 、 Figure 21 、 Figure 23-Figure 25 as well as Figure 27 As shown, the second recessed portion 5z2 can be set to a ring shape that is compatible with the second sub-pixel 352, so that the total reflection interface of the second recessed portion 5z2 is larger than the total reflection interface of the first recessed portion 5z1; for example, the second sub-pixel 352 is set to a circle, and the second recessed portion 5z2 is also set to a circular ring; the second sub-pixel 352 is set to a rectangle, and the second recessed portion 5z2 is also set to a rectangular ring; of course, in other example embodiments of the present disclosure, the shape of the second sub-pixel 352 and the shape of the second recessed portion 5z2 can also be other shapes, which are not explained here one by one.

[0214] Such arrangement enables the area of ​​the side wall of the first recess 5z1 to be smaller than the area of ​​the side wall of the second recess 5z2. Specifically, the insulating layer 5a may include a second island 5z4, and the shape of the second island 5z4 may be the same as the shape of the second sub-pixel 352. For example, the second sub-pixel 352 is configured as a circle, and the second island 5z4 is also configured as a circle; the second sub-pixel 352 is configured as a rectangle, and the second island 5z4 is also configured as a rectangle. Of course, in other example embodiments of the present disclosure, the shape of the second sub-pixel 352 and the shape of the second island 5z4 may also be other shapes, which are not described one by one here.

[0215] Light traveling from the second filter layer 62 to the insulating layer 5a is traveling from an optically dense medium to an optically rarefaction medium. Therefore, light is easily subject to total internal reflection at the interface between the second filter layer 62 and the sidewalls of the second island 5z4. The sidewalls of the second island 5z4 cause the angled outgoing light to undergo total internal reflection, thus altering the angle of the outgoing light. This results in a more concentrated total internal reflection, which is then emitted from the front of the display panel, improving the light extraction efficiency from the front of the display panel. In other words, the second island 5z4 increases the amount of light participating in total internal reflection, thereby improving the light extraction efficiency of the second sub-pixel 352 and compensating for the lower refractive index of the second filter layer 62.

[0216] When the second recessed portion 5z2 is set to a ring shape, the distance between the outer ring side wall of the second recessed portion 5z2 and the center of the second sub-pixel 352 in the first direction X increases as the height of the outer ring side wall of the second recessed portion 5z2 in the second direction Y increases, and the distance between the inner ring side wall of the second recessed portion 5z2 and the center of the second sub-pixel 352 in the first direction X decreases as the height of the inner ring side wall of the second recessed portion 5z2 in the second direction Y increases, so that the second recessed portion 5z2 forms a ring shape with an opening larger than the bottom.

[0217] The outer ring side wall of the second recessed portion 5z2 is the side wall of the above-mentioned second recessed portion 5z2, and its specific structure has been described in detail above, so it will not be repeated here.

[0218] The inner ring side wall of the second recessed portion 5z2 is the side wall of the second island 5z4, that is, the distance between the side wall of the second island 5z4 and the center of the second sub-pixel 352 in the first direction X decreases as the height of the side wall of the second island 5z4 in the second direction Y increases, so that the second island 5z4 forms a structure with a top smaller than a bottom.

[0219] In some exemplary embodiments of the present disclosure, the sidewall of the second island 5z4 may include a curved surface; the sidewall of the second island 5z4 may include a first segment, a second segment, and a third segment that are smoothly connected in sequence, the first segment being closer to the display backplane 10 than the third segment, the second segment being configured as an inclined surface, the first segment and the third segment being configured as arcuate surfaces, the first segment being configured as a recessed shape, and the third segment being configured as a protruding shape; specifically, the portion of the sidewall of the second island 5z4 that is close to the display backplane 10 may be an arcuate surface, the middle portion of the sidewall of the second island 5z4 may be configured as an inclined surface, and the portion of the sidewall of the second island 5z4 that is away from the display backplane 10 may be an arcuate surface. In other exemplary embodiments of the present disclosure, the sidewall of the second island 5z4 may be configured as an inclined surface, or the sidewall of the second island 5z4 may only include the smoothly connected first segment and third segment, but the sidewall of the second island 5z4 is generally configured as an inclined surface.

[0220] The inner ring side wall of the second recessed portion 5z2 includes a slope, and the angle between the inner ring side wall of the second recessed portion 5z2 and the first reference plane is greater than or equal to 55° and less than or equal to 85°, that is, the angle between the side wall of the second island 5z4 and the first reference plane is greater than or equal to 55° and less than or equal to 85°. For example, the angle between the side wall of the second island 5z4 and the first reference plane can be 55°, 57°, 60°, 63°, 65°, 68°, 70°, 72°, 75°, 77°, 80°, 82°, etc.

[0221] If the angle between the side wall of the second island 5z4 and the first reference plane is too large, so that the side wall of the second island 5z4 is almost perpendicular to the display back panel 10, when the second filter layer 62 is filled into the second recessed portion 5z2, it cannot be filled to the corner of the bottom wall of the second recessed portion 5z2, that is, a gap is easily formed at the corner of the bottom of the second island 5z4, and total reflection cannot be achieved well. The total reflection surface is lost, and the converging effect of the outgoing light cannot be achieved well.

[0222] If the angle between the side wall of the second island 5z4 and the first reference plane is too small, making the side wall of the second island 5z4 relatively flat, the angle of most of the outgoing light emitted from the second sub-pixel 352 may be greater than the angle between the side wall of the second island 5z4 and the first reference plane, making it impossible for the outgoing light to reach the side wall of the second island 5z4, thereby failing to achieve total reflection and failing to achieve the converging effect on the outgoing light.

[0223] The above numerical range can ensure that the light emitted from the second sub-pixel 352 with a large inclination angle can be totally reflected, thereby achieving a converging effect on the emitted light.

[0224] The maximum size of the orthographic projection of the second island 5z4 on the display back panel 10 is greater than or equal to 3 microns and less than or equal to 5 microns, that is, the maximum size of the orthographic projection of the inner annular surface of the second recess 5z2 on the display back panel 10 is greater than or equal to 3 microns and less than or equal to 5 microns, or it can be said that the bottom width of the second island 5z4 is greater than or equal to 3 microns and less than or equal to 5 microns; for example, the maximum size of the orthographic projection of the second island 5z4 on the display back panel 10 can be 3.2 microns, 3.5 microns, 3.7 microns, 4 microns, 4.3 microns, 4.5 microns, 4.8 microns, and so on.

[0225] Reference Figure 1 、 Figure 3 、 Figure 4 、 Figure 6 、 Figure 8 、 Figure 9 、 Figure 11 、 Figure 13 、 Figure 14 、 Figure 16-Figure 18 、 Figure 20 、 Figure 21 、 Figure 23-25 as well as Figure 27 As shown, the third recessed portion 5z3 can be set to a ring shape that is compatible with the third sub-pixel 353, so that the total reflection interface of the third recessed portion 5z3 is larger than the total reflection interface of the first recessed portion 5z1; for example, the third sub-pixel 353 is set to a circle, and the third recessed portion 5z3 is also set to a circular ring; the third sub-pixel 353 is set to a rectangle, and the third recessed portion 5z3 is also set to a rectangular ring; of course, in other example embodiments of the present disclosure, the shape of the third sub-pixel 353 and the shape of the third recessed portion 5z3 can also be other shapes, which are not explained here one by one.

[0226] Such arrangement enables the area of ​​the side wall of the first recess 5z1 to be smaller than the area of ​​the side wall of the third recess 5z3. Specifically, the insulating layer 5a may include a third island 5z5, and the shape of the third island 5z5 may be the same as the shape of the third sub-pixel 353. For example, the third sub-pixel 353 is configured as a circle, and the third island 5z5 is also configured as a circle; the third sub-pixel 353 is configured as a rectangle, and the third island 5z5 is also configured as a rectangle. Of course, in other example embodiments of the present disclosure, the shape of the third sub-pixel 353 and the shape of the third island 5z5 may also be other shapes, which are not explained here one by one.

[0227] Light traveling from the third filter layer 63 to the insulating layer 5a is traveling from an optically dense medium to an optically rarefaction medium. Therefore, light is likely to undergo total internal reflection at the interface between the third filter layer 63 and the sidewalls of the third island 5z5. The sidewalls of the third island 5z5 cause the angled outgoing light to undergo total internal reflection, thus altering the angle of the outgoing light. This results in a more focused total internal reflection, which is then emitted from the front of the display panel, improving light extraction efficiency from the front of the display panel. In other words, the third island 5z5 increases the amount of light participating in total internal reflection, thereby improving light extraction efficiency from the third sub-pixel 353 and compensating for the lower refractive index of the third filter layer 63.

[0228] When the third recessed portion 5z3 is set to a ring shape, the distance between the outer ring side wall of the third recessed portion 5z3 and the center of the third sub-pixel 353 in the first direction X increases as the height of the outer ring side wall of the third recessed portion 5z3 in the second direction Y increases, and the distance between the inner ring side wall of the third recessed portion 5z3 and the center of the third sub-pixel 353 in the first direction X decreases as the height of the inner ring side wall of the third recessed portion 5z3 in the second direction Y increases, so that the third recessed portion 5z3 forms a ring shape with an opening larger than the bottom.

[0229] The outer ring side wall of the third recessed portion 5z3 is the side wall of the third recessed portion 5z3 mentioned above, and its specific structure has been described in detail above, so it will not be repeated here.

[0230] The inner ring side wall of the third recessed portion 5z3 is the side wall of the third island 5z5, that is, the distance between the side wall of the third island 5z5 and the center of the third sub-pixel 353 in the first direction X decreases as the height of the side wall of the third island 5z5 in the second direction Y increases, so that the third island 5z5 forms a structure with a top smaller than a bottom.

[0231] In some example embodiments of the present disclosure, the sidewall of the third island 5z5 may include a curved surface; the sidewall of the third island 5z5 may include a fourth segment, a fifth segment, and a sixth segment that are smoothly connected in sequence, the fourth segment being closer to the display backplane 10 than the sixth segment, the fifth segment being configured as an inclined surface, the fourth and sixth segments being configured as arcuate surfaces, the fourth segment being configured as a recessed shape, and the sixth segment being configured as a protruding shape; specifically, the portion of the sidewall of the third island 5z5 that is close to the display backplane 10 may be an arcuate surface, the middle portion of the sidewall of the third island 5z5 may be configured as an inclined surface, and the portion of the sidewall of the third island 5z5 that is away from the display backplane 10 may be an arcuate surface. In other example embodiments of the present disclosure, the sidewall of the third island 5z5 may be configured as an inclined surface, or the sidewall of the third island 5z5 may only include the smoothly connected fourth and sixth segments, but the sidewall of the third island 5z5 is generally configured as an inclined surface.

[0232] The inner sidewall of the third recess 5z3 includes an inclined surface. The angle between the inner sidewall of the third recess 5z3 and the first reference plane is greater than or equal to 55° and less than or equal to 85°. That is, the angle between the sidewall of the third island 5z5 and the first reference plane is greater than or equal to 55° and less than or equal to 85°. For example, the angle between the sidewall of the third island 5z5 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 backplane 10 on which the touch layer group 5 is disposed.

[0233] If the angle between the side wall of the third island 5z5 and the first reference plane is too large, so that the side wall of the third island 5z5 is almost perpendicular to the display back panel 10, when the third filter layer 63 is filled into the third recessed portion 5z3, it cannot be filled to the corner of the bottom wall of the third recessed portion 5z3, that is, gaps are easily formed at the corners of the bottom of the third island 5z5, and total reflection cannot be achieved well. The total reflection surface is lost, and the converging effect of the outgoing light cannot be achieved well.

[0234] If the angle between the side wall of the third island 5z5 and the first reference plane is too small, making the side wall of the third island 5z5 relatively flat, the angle of most of the outgoing light emitted from the third sub-pixel 353 may be greater than the angle between the side wall of the third island 5z5 and the first reference plane, making it impossible for the outgoing light to reach the side wall of the third island 5z5, thereby failing to achieve total reflection and failing to achieve the converging effect on the outgoing light.

[0235] The above numerical range can ensure that the light emitted from the third sub-pixel 353 with a large inclination angle can be totally reflected, thereby achieving a converging effect on the emitted light.

[0236] The maximum size of the orthographic projection of the third island 5z5 on the display back panel 10 is greater than or equal to 3 microns and less than or equal to 5 microns, that is, the maximum size of the orthographic projection of the inner annular surface of the third recess 5z3 on the display back panel 10 is greater than or equal to 3 microns and less than or equal to 5 microns, or it can be said that the bottom width of the third island 5z5 is greater than or equal to 3 microns and less than or equal to 5 microns; for example, the maximum size of the orthographic projection of the third island 5z5 on the display back panel 10 can be 3.2 microns, 3.5 microns, 3.7 microns, 4 microns, 4.3 microns, 4.5 microns, 4.8 microns, and so on.

[0237] Reference Figure 7 、 Figure 8 、 Figure 12 、 Figure 13 、 Figures 18-20 as well as Figure 25-27As shown, in some exemplary embodiments of the present disclosure, the touch layer assembly 5 may further include a functional layer 5b. The functional layer 5b is disposed between two adjacent insulating layers 5a. The functional layer 5b is arranged in a grid pattern, with each grid corresponding to a sub-pixel 35, to prevent the functional layer 5b from blocking the forward light output of each sub-pixel 35. The functional layer 5b may include a dummy portion 5b1, which is provided with a via 5b11. The orthographic projection of the via 5b11 on the display backplane 10 covers the first sub-pixel 351. For example, the edge of the orthographic projection of the via 5b11 on the display backplane 10 may coincide with the edge of the first sub-pixel 351, or the area of ​​the orthographic projection of the via 5b11 on the display backplane 10 may be larger than the area of ​​the first sub-pixel 351. This arrangement prevents the dummy portion 5b1 from blocking the forward light output of the first sub-pixel 351.

[0238] The dummy portion 5b1 extends at least to the side wall of the first recessed portion 5z1. For example, the dummy portion 5b1 may extend to the side wall of the first recessed portion 5z1 and be flush with the side wall of the first recessed portion 5z1. In this way, a portion of the side wall of the first recessed portion 5z1 is occupied by the dummy portion 5b1 and cannot be totally reflected, thereby reducing the light that is totally reflected at the interface between the first filter layer 61 and the first recessed portion 5z1, thereby reducing the light output efficiency of the first sub-pixel 351, and can reduce or even avoid color deviation caused by different gains in the light output efficiency of sub-pixels 35 of different colors.

[0239] Of course, the dummy portion 5b1 may also extend to the sidewall of the first recessed portion 5z1 and protrude from the sidewall of the first recessed portion 5z1. This configuration allows a portion of the sidewall of the first recessed portion 5z1 to be occupied by the dummy portion 5b1, preventing total internal reflection. This reduces the amount of light that is totally reflected at the interface between the first filter layer 61 and the first recessed portion 5z1, thereby reducing the light extraction efficiency of the first sub-pixel 351 and reducing or even avoiding color shift caused by differences in light extraction efficiency gains between sub-pixels 35 of different colors. Furthermore, the dummy portion 5b1 can block light emitted from the first sub-pixel 351, further reducing the light extraction efficiency of the first sub-pixel 351 and reducing or even avoiding color shift caused by differences in light extraction efficiency gains between sub-pixels 35 of different colors.

[0240] Specifically, refer to Figure 12 As shown, the distance D1 between the edge line of the orthographic projection of the via hole 5b11 on the display back panel 10 and the edge line of the first sub-pixel 351 is greater than or equal to 0 and less than or equal to 1 micron. For example, the distance D1 between the edge line of the orthographic projection of the via hole 5b11 on the display back panel 10 and the edge line of the first sub-pixel 351 can be 0.1 micron, 0.2 micron, 0.3 micron, 0.4 micron, 0.5 micron, 0.6 micron, 0.7 micron, 0.8 micron, 0.9 micron, etc.

[0241] If the distance D1 between the edge of the orthographic projection of the via hole 5b11 on the display backplane 10 and the edge of the first sub-pixel 351 is too large, the dummy portion 5b1 cannot extend to the sidewall of the first recessed portion 5z1. In other words, a portion of the sidewall of the first recessed portion 5z1 cannot be occupied by the dummy portion 5b1, which cannot reduce the amount of light that is totally reflected at the interface between the first filter layer 61 and the first recessed portion 5z1, thereby reducing the light extraction efficiency of the first sub-pixel 351. Within the above numerical range, a portion of the sidewall of the first recessed portion 5z1 is occupied by the dummy portion 5b1, preventing total reflection. This reduces the amount of light that is totally reflected at the interface between the first filter layer 61 and the first recessed portion 5z1, thereby reducing the light extraction efficiency of the first sub-pixel 351.

[0242] The dummy portion 5b1 extends at least to the sidewall of the first recessed portion 5z1. In other words, the orthographic projection of the via hole 5b11 on the display backplane 10 is located within the orthographic projection of the first recessed portion 5z1 on the display backplane 10. Specifically, a distance D2 between an edge line of the orthographic projection of the via hole 5b11 on the display backplane 10 and an edge line of the orthographic projection of the first recessed portion 5z1 on the display backplane 10 is greater than or equal to 0 and less than or equal to 2 micrometers. For example, the distance D2 between an edge line of the orthographic projection of the via hole 5b11 on the display backplane 10 and an edge line of the orthographic projection of the first recessed portion 5z1 on the display backplane 10 can be 0.3 micrometers, 0.5 micrometers, 0.8 micrometers, 1 micrometer, 1.2 micrometers, 1.5 micrometers, 1.7 micrometers, and so on.

[0243] If the distance D2 between the edge of the orthographic projection of the via hole 5b11 on the display backplane 10 and the edge of the orthographic projection of the first recessed portion 5z1 on the display backplane 10 is too large, the dummy portion 5b1 will protrude too far from the sidewall of the first recessed portion 5z1, and the dummy portion 5b1 will easily block the first sub-pixel 351, resulting in a significant reduction in the light extraction efficiency of the first sub-pixel 351. The above numerical range ensures that the dummy portion 5b1 does not block the first sub-pixel 351, ensuring the light extraction efficiency of the first sub-pixel 351 in the forward direction.

[0244] In this example embodiment, the dummy portion 5b1 can be set to a ring shape, and the ring width of the dummy portion 5b1 is greater than or equal to 3 microns and less than or equal to 4 microns. For example, the ring width of the dummy portion 5b1 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.

[0245] If the ring width of the dummy portion 5b1 is too large, the dummy portion 5b1 may be easily electrically connected to the touch electrode 541 , affecting the touch signal; or the dummy portion 5b1 may block a large amount of light from the sub-pixel 35 .

[0246] If the ring width of the dummy portion 5b1 is too small, it will be difficult for the dummy portion 5b1 to extend to the side wall of the first recessed portion 5z1, that is, a portion of the side wall of the first recessed portion 5z1 cannot be occupied by the dummy portion 5b1, and the light that is totally reflected at the interface between the first filter layer 61 and the first recessed portion 5z1 cannot be reduced, and the light extraction efficiency of the first sub-pixel 351 cannot be reduced.

[0247] The above numerical range not only ensures that a portion of the side wall of the first recessed portion 5z1 is occupied by the dummy portion 5b1 and cannot be totally reflected, thereby reducing the light that is totally reflected at the interface between the first filter layer 61 and the first recessed portion 5z1, thereby reducing the light output efficiency of the first sub-pixel 351; but also the dummy portion 5b1 will not be electrically connected to the touch electrode 541, will not affect the touch signal; and will not block the light output of the sub-pixel 35.

[0248] It should be noted that the dummy portion 5b1 can be a closed ring structure or a ring structure with a break, and the number of the break can be one, two or more.

[0249] Reference Figure 7 and Figure 8 As shown, when the first recessed portion 5z1, the second recessed portion 5z2 and the third recessed portion 5z3 are provided in the touch insulating layer 53, the functional layer 5b is the first touch functional layer 52, that is, the first touch functional layer 52 may include a dummy portion 5b1 and a bridging portion 521, the connection between the bridging portion 521 and the dummy portion 5b1 may be disconnected by breaking the wire, and the dummy portion 5b1 blocks the bottom of the first recessed portion 5z1.

[0250] Reference Figure 12 and Figure 13 As shown, when the first recessed portion 5z1, the second recessed portion 5z2 and the third recessed portion 5z3 are provided in the protective layer 55, the functional layer 5b is the second touch functional layer 54, that is, the second touch functional layer 54 may include a dummy portion 5b1 and a touch electrode 541, and the touch electrode 541 and the dummy portion 5b1 may be disconnected by breaking the wire, and the dummy portion 5b1 blocks the bottom of the first recessed portion 5z1.

[0251] Reference Figures 18-20 As shown, when the first recessed portion 5z1, the second recessed portion 5z2 and the third recessed portion 5z3 are provided in the base layer 51 and the touch insulating layer 53, the functional layer 5b is the first touch functional layer 52, that is, the first touch functional layer 52 may include a dummy portion 5b1 and a bridging portion 521, the connection between the bridging portion 521 and the dummy portion 5b1 may be disconnected by breaking the wire, and the dummy portion 5b1 blocks the middle portion of the first recessed portion 5z1.

[0252] Reference Figure 25-27As shown, when the first recessed portion 5z1, the second recessed portion 5z2 and the third recessed portion 5z3 are provided in the touch insulating layer 53 and the protective layer 55, the functional layer 5b is the second touch functional layer 54, that is, the second touch functional layer 54 may include a dummy portion 5b1 and a touch electrode 541, the touch electrode 541 and the dummy portion 5b1 may be disconnected by breaking the wire, and the dummy portion 5b1 blocks the middle portion of the first recessed portion 5z1.

[0253] Reference Figure 17 and Figure 24 As shown, when the first recess 5z1 is provided in two insulating layers 5a, that is, when the first recess 5z1 includes a first sub-recess 5z11 and a fourth sub-recess 5z12, the orthographic projection area of ​​one end of the fourth sub-recess 5z12 close to the first sub-recess 5z11 on the display back panel 10 is larger than the orthographic projection area of ​​one end of the first sub-recess 5z11 close to the fourth sub-recess 5z12 on the display back panel 10, so that the first recess 5z1 forms a step structure in which the opening portion is larger than the bottom.

[0254] Such arrangement enables the first sub-recess 5z11 to block the fourth sub-recess 5z12 to a certain extent, that is, the light emitted from the first sub-pixel 351 cannot reach the end of the fourth sub-recess 5z12 close to the first sub-recess 5z11 due to the blockage of the first sub-recess 5z11, thereby reducing the total reflection interface of the first recess 5z1, reducing the light that is totally reflected at the interface between the first filter layer 61 and the first recess 5z1, and further reducing the light output efficiency of the first sub-pixel 351, which can reduce or even avoid color deviation caused by different gains in the light output efficiency of sub-pixels 35 of different colors.

[0255] In the above example embodiment, the refractive index of the base layer 51, the touch insulating layer 53 and the protective layer 55 can be the same. Specifically, the refractive index of the base layer 51, the touch insulating layer 53 and the protective layer 55 can be greater than or equal to 1.45 and less than or equal to 1.55. For example, the refractive index can be 1.47, 1.5, 1.53, etc.

[0256] The thickness of the base layer 51 can be greater than or equal to 1.5 microns and less than or equal to 2.5 microns. For example, the thickness of the base layer 51 can be 1.8 microns, 2 microns, 2.3 microns, etc. The thickness of the touch insulation layer 53 can be greater than or equal to 1.5 microns and less than or equal to 2.5 microns. For example, the thickness of the touch insulation layer 53 can be 1.8 microns, 2 microns, 2.3 microns, etc. The thickness of the protective layer 55 can be greater than or equal to 1.5 microns and less than or equal to 2.5 microns. For example, the thickness of the protective layer 55 can be 1.8 microns, 2 microns, 2.3 microns, etc.

[0257] Of course, in some other exemplary embodiments of the present disclosure, the first recessed portion 5z1 , the second recessed portion 5z2 , and the third recessed portion 5z3 may also be provided in different insulating layers 5a .

[0258] It should be noted that the above-mentioned structure for reducing the total reflection interface of the first recessed portion 5z1 can be used alone for the display panel, or it can be a combination of one, two or more structures of the above-mentioned structure for reducing the total reflection interface of the first recessed portion 5z1 and adding a total reflection interface of the second recessed portion 5z2 and adding a total reflection interface of the third recessed portion 5z3 for use in the display panel, or it can be a combination of one, two or more structures of adding a total reflection interface of the second recessed portion 5z2 and adding a total reflection interface of the third recessed portion 5z3 for use in the display panel.

[0259] In some example embodiments of the present disclosure, reference is made to Figure 28 – Figure 36 As shown, a first recessed portion 5z1 is provided on the insulating layer group 5z, and at least a portion of the first filter layer 61 is located in the first recessed portion 5z1. The specific structure and relationship of the first recessed portion 5z1 and the first filter layer 61 have been described in detail above, so they will not be repeated here.

[0260] The insulating layer group 5z may include a second protrusion 5z6 , and an orthographic projection of the second protrusion 5z6 on the display backplane 10 at least partially overlaps with the second sub-pixel 352 .

[0261] Reference Figure 28 – Figure 36 As shown, the second protrusion 5z6 may include side walls and a top wall, the top wall being parallel to the display surface, and the side wall intersecting the display surface. The second protrusion 5z6 and the second sub-pixel 352 may have a one-to-one correspondence. Specifically, the number of the second protrusions 5z6 is the same as the number of the second sub-pixels 352, and the shape of the second protrusion 5z6 is the same as the shape of the second sub-pixel 352. For example, if the second sub-pixel 352 is configured as a circle, the second protrusion 5z6 is also configured as a circle; if the second sub-pixel 352 is configured as a rectangle, the second protrusion 5z6 is also configured as a rectangle. Of course, in other example embodiments of the present disclosure, the shape of the second sub-pixel 352 and the shape of the second protrusion 5z6 may also be other shapes, which are not described here one by one.

[0262] The orthographic projection of the second protrusion 5z6 on the display backplane 10 at least partially overlaps with the second sub-pixel 352. For example, the edge line of the orthographic projection of the second protrusion 5z6 on the display backplane 10 may coincide with the edge line of the second sub-pixel 352, or the orthographic projection of the second protrusion 5z6 on the display backplane 10 may cover and be larger than the second sub-pixel 352. In both cases, the orthographic projection of the second protrusion 5z6 on the display backplane 10 completely covers the second sub-pixel 352. In this case, the distance between the edge line of the orthographic projection of the second protrusion 5z6 on the display backplane 10 and the edge line of the second sub-pixel 352 in the first direction X is greater than or equal to 0.5 microns and less than or equal to 2 microns. For example, the distance between the edge line of the orthographic projection of the second protrusion 5z6 on the display backplane 10 and the edge line of the second sub-pixel 352 in the first direction X may be 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, and so on.

[0263] Of course, in some other exemplary embodiments of the present disclosure, a portion of the orthographic projection of the second protrusion 5z6 on the display backplane 10 may overlap with a portion of the second sub-pixel 352 .

[0264] It should be noted that since the side wall of the second protrusion 5z6 is inclined, when compared with the second sub-pixel 352, the range of the positive projection of the second protrusion 5z6 on the display back panel 10 refers to the positive projection of the side (bottom wall) of the second protrusion 5z6 close to the display back panel 10 on the display back panel 10, that is, the positive projection of the bottom wall of the second protrusion 5z6 on the display back panel 10 at least partially overlaps with the second sub-pixel 352.

[0265] The distance between the side wall of the second protrusion 5z6 and the center of the second sub-pixel 352 in the first direction X increases as the height of the side wall of the second protrusion 5z6 in the second direction Y decreases, so that the second protrusion 5z6 forms a roughly truncated cone structure with a top smaller than a bottom.

[0266] In some exemplary embodiments of the present disclosure, the sidewall of the second protrusion 5z6 may include a curved surface; the sidewall of the second protrusion 5z6 may include a tenth portion, an eleventh portion, and a twelfth portion that are smoothly connected in sequence, the tenth portion being closer to the display back plate 10 than the twelfth portion, the eleventh portion being configured as an inclined surface, the tenth portion and the twelfth portion being configured as arcuate surfaces, the tenth portion being configured as a recessed shape, and the twelfth portion being configured as a protruding shape; specifically, the portion of the sidewall of the second protrusion 5z6 that is close to the display back plate 10 may be an arcuate surface, the middle portion of the sidewall of the second protrusion 5z6 may be configured as an inclined surface, and the portion of the sidewall of the second protrusion 5z6 that is away from the display back plate 10 may be an arcuate surface. In other exemplary embodiments of the present disclosure, the sidewall of the second protrusion 5z6 may be configured as an inclined surface, or the sidewall of the second protrusion 5z6 may only include the smoothly connected tenth and twelfth portions, but the sidewall of the second protrusion 5z6 is generally configured as an inclined surface.

[0267] The second filter layer 62 is disposed on the side of the second protrusion 5z6 facing away from the display backplate 10. The second filter layer 62 may be a green filter layer, that is, the second filter layer 62 only transmits green light. The second filter layer 62 covers at least a portion of the sidewall of the second protrusion 5z6. For example, the second filter layer 62 may cover the entire sidewall of the second protrusion 5z6, or may cover a portion of the sidewall of the second protrusion 5z6.

[0268] The following description will be made by taking an example where the second filter layer 62 can cover the entire sidewall of the second protrusion 5z6.

[0269] The refractive index of the second filter layer 62 is lower than that of the second protrusion 5z6. Specifically, the refractive index of the second filter layer 62 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 62 can be 1.58, 1.6, 1.62, etc. The refractive index of the second protrusion 5z6 is greater than or equal to 1.7 and less than or equal to 1.85. In other words, the refractive index of the insulating layer 5a on which the second protrusion 5z6 is provided is greater than or equal to 1.7 and less than or equal to 1.85. For example, the refractive index of the second protrusion 5z6 can be 1.72, 1.75, 1.77, 1.8, 1.82, etc.

[0270] The light emitted from the second protrusion 5z6 to the second filter layer 62 is emitted from a denser medium to a less dense medium. The side wall of the second protrusion 5z6 can adjust the incident angle of the light emitted from the second sub-pixel 352 at the interface between the second protrusion 5z6 and the second filter layer 62, so that the incident angle is smaller, and then the interface between the second protrusion 5z6 and the second filter layer 62 can be refracted instead of totally reflected, and the incident light is located on the side of the normal close to the display back panel 10. After refraction at the interface between the second protrusion 5z6 and the second filter layer 62, the outgoing light is offset toward the positive viewing angle, thereby improving the light extraction efficiency.

[0271] Moreover, the first sub-pixel 351 and the second sub-pixel 352 improve the light output efficiency in different ways, which can reduce or even avoid the color deviation caused by the different gains of the light output efficiency of sub-pixels 35 of different colors, thereby effectively improving the light output efficiency of the first sub-pixel 351 and the second sub-pixel 352, thereby improving the light output efficiency of the display panel.

[0272] Furthermore, when the ambient light is strong, only green light enters the display panel after being filtered by the second filter layer 62 . After being reflected by the display panel, only green light exits the display panel, thereby achieving the purpose of anti-glare.

[0273] The angle between the side wall of the second protrusion 5z6 and the first reference plane is greater than or equal to 55° and less than or equal to 85°. For example, the angle between the side wall of the second protrusion 5z6 and the first reference plane can be 57°, 60°, 63°, 65°, 68°, 70°, 72°, 75°, 77°, 80°, 83°, etc.

[0274] If the angle between the side wall of the second protrusion 5z6 and the first reference plane is too large, so that the side wall of the second protrusion 5z6 is almost perpendicular to the display back panel 10, when the second filter layer 62 covers the side wall of the second protrusion 5z6, it cannot be filled to the corner formed by the second protrusion 5z6 and the display back panel 10, that is, a gap is easily formed at the corner formed by the second protrusion 5z6 and the display back panel 10, and reflection cannot be achieved well, the reflective surface is lost, and the converging effect of the outgoing light cannot be achieved well.

[0275] If the angle between the side wall of the second protrusion 5z6 and the first reference plane is too small, making the side wall of the second protrusion 5z6 relatively flat, since the outgoing light emitted from the second sub-pixel 352 is emitted from the second protrusion 5z6 to the second filter layer 62, that is, from a denser medium to a less dense medium, the light with a larger inclination angle is prone to total reflection at the interface, resulting in an inability to emit. Even if part of the light is refracted and emitted, it has a diffusion effect on the light.

[0276] The above numerical range can adjust the angle of the outgoing light emitted from the second sub-pixel 352 at the interface between the second protrusion 5z6 and the second filter layer 62, and produce a converging effect on the light through refraction.

[0277] The thickness of the second protrusion 5z6 is greater than or equal to 1.5 microns and less than or equal to 2.5 microns. For example, the thickness of the second protrusion 5z6 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, etc.

[0278] The thickness of the second filter layer 62 is greater than or equal to 3 microns and less than or equal to 5 microns. For example, the thickness of the second filter layer 62 can be 3.2 microns, 3.5 microns, 3.7 microns, 4 microns, 4.3 microns, 4.5 microns, 4.8 microns, etc.

[0279] Reference Figure 28 – Figure 36 As shown, the insulating layer group 5z may include a third protrusion 5z7 , and the orthographic projection of the third protrusion 5z7 on the display backplane 10 at least partially overlaps with the third sub-pixel 353 .

[0280] Reference Figure 28 – Figure 36 As shown, the third protrusion 5z7 may include side walls and a top wall, the top wall being parallel to the display surface, and the side walls intersecting the display surface. The third protrusion 5z7 and the third sub-pixel 353 may have a one-to-one correspondence. Specifically, the number of the third protrusions 5z7 is the same as the number of the third sub-pixels 353, and the shape of the third protrusion 5z7 is the same as the shape of the third sub-pixel 353. For example, if the third sub-pixel 353 is configured as a circle, the third protrusion 5z7 is also configured as a circle; if the third sub-pixel 353 is configured as a rectangle, the third protrusion 5z7 is also configured as a rectangle. Of course, in other example embodiments of the present disclosure, the shape of the third sub-pixel 353 and the shape of the third protrusion 5z7 may also be other shapes, which are not described here one by one.

[0281] The orthographic projection of the third protrusion 5z7 on the display backplane 10 at least partially overlaps with the third sub-pixel 353. For example, the edge line of the orthographic projection of the third protrusion 5z7 on the display backplane 10 may coincide with the edge line of the third sub-pixel 353, or the orthographic projection of the third protrusion 5z7 on the display backplane 10 may cover and be larger than the third sub-pixel 353. In both cases, the orthographic projection of the third protrusion 5z7 on the display backplane 10 completely covers the third sub-pixel 353. In this case, the distance between the edge line of the orthographic projection of the third protrusion 5z7 on the display backplane 10 and the edge line of the third sub-pixel 353 in the first direction X is greater than or equal to 0.5 microns and less than or equal to 2 microns. For example, the distance between the edge line of the orthographic projection of the third protrusion 5z7 on the display backplane 10 and the edge line of the third sub-pixel 353 in the first direction X may be 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, and so on.

[0282] Of course, in some other exemplary embodiments of the present disclosure, a portion of the orthographic projection of the third protrusion 5z7 on the display backplane 10 may overlap with a portion of the third sub-pixel 353 .

[0283] It should be noted that since the side wall of the third protrusion 5z7 is inclined, when compared with the third sub-pixel 353, the range of the positive projection of the third protrusion 5z7 on the display back panel 10 refers to the positive projection of the side (bottom wall) of the third protrusion 5z7 close to the display back panel 10 on the display back panel 10, that is, the positive projection of the bottom wall of the third protrusion 5z7 on the display back panel 10 at least partially overlaps with the third sub-pixel 353.

[0284] The distance between the side wall of the third protrusion 5z7 and the center of the third sub-pixel 353 in the first direction X increases as the height of the side wall of the third protrusion 5z7 in the second direction Y decreases, so that the third protrusion 5z7 forms a roughly truncated cone structure with a top smaller than a bottom.

[0285] In some exemplary embodiments of the present disclosure, the sidewall of the third protrusion 5z7 may include a curved surface; the sidewall of the third protrusion 5z7 may include a thirteenth portion, a fourteenth portion, and a fifteenth portion that are smoothly connected in sequence, the thirteenth portion being closer to the display back plate 10 than the fifteenth portion, the fourteenth portion being configured as an inclined surface, the thirteenth portion and the fifteenth portion being configured as arcuate surfaces, the thirteenth portion being configured as a recessed shape, and the fifteenth portion being configured as a protrusion; specifically, the portion of the sidewall of the third protrusion 5z7 that is close to the display back plate 10 may be an arcuate surface, the middle portion of the sidewall of the third protrusion 5z7 may be configured as an inclined surface, and the portion of the sidewall of the third protrusion 5z7 that is away from the display back plate 10 may be an arcuate surface. In other exemplary embodiments of the present disclosure, the sidewall of the third protrusion 5z7 may be configured as an inclined surface, or the sidewall of the third protrusion 5z7 may only include the smoothly connected thirteenth and fifteenth portions, but the sidewall of the third protrusion 5z7 is generally configured as an inclined surface.

[0286] The third filter layer 63 is disposed on the side of the third protrusion 5z7 facing away from the display backplate 10. The third filter layer 63 may be a blue filter layer, i.e., the third filter layer 63 only transmits blue light. The third filter layer 63 covers at least a portion of the sidewall of the third protrusion 5z7. For example, the third filter layer 63 may cover the entire sidewall of the third protrusion 5z7, or may cover a portion of the sidewall of the third protrusion 5z7.

[0287] The following description will be made by taking an example where the third filter layer 63 can cover the entire sidewall of the third protrusion 5z7.

[0288] The refractive index of the third filter layer 63 is lower than that of the third protrusion 5z7. Specifically, the refractive index of the third filter layer 63 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 63 can be 1.58, 1.6, 1.62, etc. The refractive index of the third protrusion 5z7 is greater than or equal to 1.7 and less than or equal to 1.85. In other words, the refractive index of the insulating layer 5a on which the third protrusion 5z7 is provided is greater than or equal to 1.7 and less than or equal to 1.85. For example, the refractive index of the third protrusion 5z7 can be 1.72, 1.75, 1.77, 1.8, 1.82, etc.

[0289] The light emitted from the third protrusion 5z7 to the third filter layer 63 is emitted from a denser medium to a less dense medium. The side wall of the third protrusion 5z7 can adjust the incident angle of the light emitted from the third sub-pixel 353 at the interface between the third protrusion 5z7 and the third filter layer 63, so that the incident angle is smaller, and then refraction instead of total reflection can occur at the interface between the third protrusion 5z7 and the third filter layer 63, and the incident light is located on the side whose normal is close to the display back panel 10. After refraction at the interface between the third protrusion 5z7 and the third filter layer 63, the outgoing light is offset toward the positive viewing angle, thereby improving the light extraction efficiency.

[0290] Moreover, the first sub-pixel 351 and the third sub-pixel 353 improve the light output efficiency in different ways, which can reduce or even avoid the color deviation caused by the different gains of the light output efficiency of sub-pixels 35 of different colors, thereby effectively improving the light output efficiency of the first sub-pixel 351 and the third sub-pixel 353, thereby improving the light output efficiency of the display panel.

[0291] Furthermore, when the ambient light is strong, only blue light enters the display panel after being filtered by the third filter layer 63 . After being reflected by the display panel, only blue light exits the display panel, thereby achieving the purpose of anti-glare.

[0292] The angle between the side wall of the third protrusion 5z7 and the first reference plane is greater than or equal to 55° and less than or equal to 85°. For example, the angle between the side wall of the third protrusion 5z7 and the first reference plane can be 57°, 60°, 63°, 65°, 68°, 70°, 72°, 75°, 77°, 80°, 83°, etc.

[0293] If the angle between the side wall of the third protrusion 5z7 and the first reference plane is too large, so that the side wall of the third protrusion 5z7 is almost perpendicular to the display back panel 10, when the third filter layer 63 covers the side wall of the third protrusion 5z7, it cannot be filled to the corner formed by the third protrusion 5z7 and the display back panel 10, that is, a gap is easily formed at the corner formed by the third protrusion 5z7 and the display back panel 10, and reflection cannot be achieved well, the reflecting surface is lost, and the converging effect of the outgoing light cannot be achieved well.

[0294] If the angle between the side wall of the third protrusion 5z7 and the first reference plane is too small, making the side wall of the third protrusion 5z7 relatively flat, since the outgoing light emitted from the third sub-pixel 353 is emitted from the third protrusion 5z7 to the third filter layer 63, which is from a denser medium to a less dense medium, the light with a larger inclination angle is prone to total reflection at the interface, resulting in an inability to emit. Even if part of the light is refracted and emitted, it has a diffusion effect on the light.

[0295] The above numerical range can adjust the angle of the outgoing light emitted from the third sub-pixel 353 at the interface between the third protrusion 5z7 and the third filter layer 63, and produce a converging effect on the light through refraction.

[0296] The thickness of the third protrusion 5z7 is greater than or equal to 1.5 microns and less than or equal to 2.5 microns. For example, the thickness of the third protrusion 5z7 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, etc.

[0297] The thickness of the third filter layer 63 is greater than or equal to 3 microns and less than or equal to 5 microns. For example, the thickness of the third filter layer 63 can be 3.2 microns, 3.5 microns, 3.7 microns, 4 microns, 4.3 microns, 4.5 microns, 4.8 microns, etc.

[0298] In some example embodiments of the present disclosure, reference is made to Figure 28 – Figure 36 As shown, the insulating layer 5a where the first recessed portion 5z1 is provided is the first insulating layer, the insulating layer 5a where the second protruding portion 5z6 is provided is the second insulating layer, and the insulating layer 5a where the third protruding portion 5z7 is provided is the third insulating layer; the distance between the side of the first recessed portion 5z1 close to the display backplane 10 and the display backplane 10 is the first distance, that is, the distance between the first insulating layer and the display backplane 10 is the first distance, specifically, the distance between the side of the first insulating layer close to the display backplane 10 and the display backplane 10 is the first distance; the second protruding portion 5z6 close to the display backplane 1 0 and the display back panel 10 is the second distance, that is, the distance between the second insulating layer and the display back panel 10 is the second distance. Specifically, the distance between the side of the second insulating layer close to the display back panel 10 and the display back panel 10 is the second distance; the distance between the side of the third protrusion 5z7 close to the display back panel 10 and the display back panel 10 is the third distance, that is, the distance between the third insulating layer and the display back panel 10 is the third distance. Specifically, the distance between the side of the third insulating layer close to the display back panel 10 and the display back panel 10 is the third distance.

[0299] The distance between the first recessed portion 5z1 or the second protruding portion 5z6 corresponding to the one with the larger refractive index among the first filter layer 61 and the second filter layer 62 and the display back panel 10 is small. For example, when the refractive index of the second filter layer 62 is smaller than the refractive index of the first filter layer 61, the second distance is greater than the first distance, that is, the height of the second insulating layer in the second direction Y is higher than the height of the first insulating layer in the second direction Y.

[0300] The distance between the first recessed portion 5z1 or the third protruding portion 5z7 corresponding to the one with the larger refractive index among the first filter layer 61 and the third filter layer 63 and the display back panel 10 is small. For example, when the refractive index of the third filter layer 63 is smaller than the refractive index of the first filter layer 61, the third distance is greater than the first distance, that is, the height of the third insulating layer in the second direction Y is higher than the height of the first insulating layer in the second direction Y.

[0301] Reference Figure 28 and Figure 38 As shown, the farther the distance between the insulating layer 5a that produces total reflection or refraction of light and the sub-pixel 35 is, the smaller the emission angle of the light that produces total reflection or refraction is (for example, Figure 28 (α2 is less than α1, and α3 is less than α1), that is, the smaller the angle of the light that can be adjusted, the greater the number of light rays that can be adjusted, and the smaller the field of view of the light that can be adjusted, thereby improving the light extraction efficiency of the corresponding sub-pixel 35 and increasing the proportion of light intensity. Therefore, the second distance is greater than the first distance, which can improve the light extraction efficiency of the second sub-pixel 352 and reduce or even avoid color shift caused by different gains in light extraction efficiency of sub-pixels 35 of different colors. Similarly, the third distance is greater than the first distance, which can improve the light extraction efficiency of the third sub-pixel 353 and reduce or even avoid color shift caused by different gains in light extraction efficiency of sub-pixels 35 of different colors.

[0302] Of course, in some other exemplary embodiments of the present disclosure, Figure 34-36 As shown, the refractive index of the third filter layer 63 may be greater than that of the first filter layer 61, and the refractive index of the second filter layer 62 may be greater than that of the first filter layer 61. In this case, the second distance is smaller than the first distance, and the third distance is smaller than the first distance. This arrangement can improve the light extraction efficiency of the first sub-pixel 351, and can reduce or even avoid color shift caused by different gains in the light extraction efficiency of sub-pixels 35 of different colors.

[0303] Reference Figures 28-31 、 Figures 34-37As shown, in some example embodiments of the present disclosure, the second insulating layer and the third insulating layer can be the same insulating layer 5a, that is, the second distance is equal to the third distance, or it can be said that the second protrusion 5z6 and the third protrusion 5z7 are arranged on the same insulating layer 5a. This situation is generally applicable to the case where the refractive index of the second filter layer 62 is basically the same as the refractive index of the third filter layer 63, so that the light extraction efficiency of the second sub-pixel 352 is basically the same as the light extraction efficiency of the third sub-pixel 353.

[0304] Reference Figure 33 As shown, in some example embodiments of the present disclosure, the second distance may be greater than the third distance, that is, the height of the second insulating layer in the second direction Y is higher than the height of the third insulating layer in the second direction Y. This situation is generally applicable to the case where the refractive index of the second filter layer 62 is less than that of the third filter layer 63 and the refractive index is basically the same, thereby improving the light extraction efficiency of the second sub-pixel 352, so that the light extraction efficiency of the second sub-pixel 352 is basically the same as the light extraction efficiency of the third sub-pixel 353.

[0305] Reference Figure 32 As shown, in some example embodiments of the present disclosure, the second distance may be smaller than the third distance, that is, the height of the second insulating layer in the second direction Y is lower than the height of the third insulating layer in the second direction Y. This situation is generally applicable to the case where the refractive index of the second filter layer 62 is greater than the refractive index of the third filter layer 63 and the refractive index is basically the same, thereby improving the light extraction efficiency of the third sub-pixel 353, so that the light extraction efficiency of the second sub-pixel 352 is basically the same as the light extraction efficiency of the third sub-pixel 353.

[0306] Reference Figures 28-30 、 Figure 32-Figure 35 As shown, the second protrusion 5z6 is set to a single-layer structure, that is, the second protrusion 5z6 is formed by patterning a layer of insulating layer 5a; the third protrusion 5z7 is set to a single-layer structure, that is, the third protrusion 5z7 is formed by patterning a layer of insulating layer 5a.

[0307] Reference Figure 31 and Figure 36 As shown, the second protrusion 5z6 is set to a double-layer structure, that is, the second protrusion 5z6 is formed by patterning two insulating layers 5a; the third protrusion 5z7 is set to a double-layer structure, that is, the third protrusion 5z7 is formed by patterning two insulating layers 5a.

[0308] Of course, in some other example embodiments of the present disclosure, the second protrusion 5z6 may be set to a single-layer structure, while the third protrusion 5z7 is set to a double-layer structure; or the second protrusion 5z6 may be set to a double-layer structure, while the third protrusion 5z7 is set to a single-layer structure.

[0309] In the case where the touch layer group 5 may include a base layer 51, a first touch function layer 52, a touch insulating layer 53, a second touch function layer 54 and a protective layer 55 stacked in sequence, the base layer 51, the touch insulating layer 53 and the protective layer 55 are all insulating layers 5a; Figure 28 As shown, in some example embodiments of the present disclosure, the first recessed portion 5z1 can be provided in the base layer 51, and the second protruding portion 5z6 and the third protruding portion 5z7 can be provided in the touch insulating layer 53. The specific process is as follows: preparing the base layer 51 and patterning it to form the first recessed portion 5z1, and then sequentially preparing the first filter layer 61 and the first touch functional layer 52; then, preparing the touch insulating layer 53 and patterning it to form the second protruding portion 5z6 and the third protruding portion 5z7, and then sequentially preparing the second filter layer 62 and the third filter layer 63; thirdly, preparing the second touch functional layer 54 and the protective layer 55. In this case, the refractive index of the base layer 51 is relatively low, for example, the refractive index of the base layer 51 can be greater than or equal to 1.45 and less than or equal to 1.55; the refractive index of the touch insulation layer 53 is relatively high, for example, the refractive index of the touch insulation layer 53 can be greater than or equal to 1.7 and less than or equal to 1.85; the refractive index of the protective layer 55 is relatively low, for example, the refractive index of the protective layer 55 can be greater than or equal to 1.45 and less than or equal to 1.55.

[0310] Reference Figure 29 As shown, the first recessed portion 5z1 can be provided on the base layer 51, and the second protruding portion 5z6 and the third protruding portion 5z7 can be provided on the protective layer 55. The specific process is to prepare the base layer 51 and pattern it to form the first recessed portion 5z1, and then prepare the first filter layer 61, the first touch function layer 52, the touch insulation layer 53, the second touch function layer 54 and the protective layer 55 in sequence, and pattern the protective layer 55 to form the second protruding portion 5z6 and the third protruding portion 5z7, and then, prepare the second filter layer 62 and the third filter layer 63 in sequence. In this case, the refractive index of the base layer 51 is relatively low, for example, the refractive index of the base layer 51 can be greater than or equal to 1.45 and less than or equal to 1.55; the refractive index of the protective layer 55 is relatively high, for example, the refractive index of the protective layer 55 can be greater than or equal to 1.7 and less than or equal to 1.85; the refractive index of the touch insulation layer 53 is relatively low, for example, the refractive index of the touch insulation layer 53 can be greater than or equal to 1.45 and less than or equal to 1.55.

[0311] Reference Figure 30As shown, the first recessed portion 5z1 can be provided in the touch insulating layer 53, and the second protruding portion 5z6 and the third protruding portion 5z7 can be provided in the protective layer 55; the specific process is to prepare the base layer 51, the first touch functional layer 52 and the touch insulating layer 53 in sequence, and pattern the touch insulating layer 53 to form the first recessed portion 5z1, and then prepare the first filter layer 61, the second touch functional layer 54 and the protective layer 55 in sequence, and pattern the protective layer 55 to form the second protruding portion 5z6 and the third protruding portion 5z7, and then, prepare the second filter layer 62 and the third filter layer 63 in sequence. In this case, the refractive index of the touch insulation layer 53 is relatively low, for example, the refractive index of the touch insulation layer 53 can be greater than or equal to 1.45 and less than or equal to 1.55; the refractive index of the protective layer 55 is relatively high, for example, the refractive index of the protective layer 55 can be greater than or equal to 1.7 and less than or equal to 1.85; the refractive index of the base layer 51 is relatively low, for example, the refractive index of the base layer 51 can be greater than or equal to 1.45 and less than or equal to 1.55.

[0312] Reference Figure 32 As shown, the first recessed portion 5z1 can be provided on the base layer 51, the second protruding portion 5z6 can be provided on the touch insulating layer 53, and the third protruding portion 5z7 can be provided on the protective layer 55; the specific process is to prepare the base layer 51 and pattern it to form the first recessed portion 5z1, and then prepare the first filter layer 61 and the first touch functional layer 52 in sequence; then, prepare the touch insulating layer 53 and pattern it to form the second protruding portion 5z6, and then prepare the second filter layer 62, the second touch functional layer 54 and the protective layer 55 in sequence, and pattern the protective layer 55 to form the third protruding portion 5z7, and then, prepare the third filter layer 63. In this case, the refractive index of the base layer 51 is relatively low, for example, the refractive index of the base layer 51 can be greater than or equal to 1.45 and less than or equal to 1.55; the refractive index of the touch insulation layer 53 and the protective layer 55 is relatively high, for example, the refractive index of the touch insulation layer 53 and the protective layer 55 can be greater than or equal to 1.7 and less than or equal to 1.85.

[0313] Reference Figure 33As shown, the first recessed portion 5z1 can be provided on the base layer 51, the second protruding portion 5z6 can be provided on the protective layer 55, and the third protruding portion 5z7 can be provided on the touch insulating layer 53; the specific process is to prepare the base layer 51 and pattern it to form the first recessed portion 5z1, and then prepare the first filter layer 61 and the first touch functional layer 52 in sequence; then, prepare the touch insulating layer 53 and pattern it to form the third protruding portion 5z7, and then prepare the third filter layer 63, the second touch functional layer 54 and the protective layer 55 in sequence, and pattern the protective layer 55 to form the second protruding portion 5z6, and then, prepare the second filter layer 62. In this case, the refractive index of the base layer 51 is relatively low, for example, the refractive index of the base layer 51 can be greater than or equal to 1.45 and less than or equal to 1.55; the refractive index of the touch insulation layer 53 and the protective layer 55 is relatively high, for example, the refractive index of the touch insulation layer 53 and the protective layer 55 can be greater than or equal to 1.7 and less than or equal to 1.85.

[0314] Reference Figure 34 As shown, the first recessed portion 5z1 can be provided in the protective layer 55, and the second protruding portion 5z6 and the third protruding portion 5z7 can be provided in the base layer 51; the specific process is to prepare the base layer 51 and pattern it to form the second protruding portion 5z6 and the third protruding portion 5z7, and then prepare the second filter layer 62, the third filter layer 63, the first touch function layer 52, the touch insulation layer 53, the second touch function layer 54 and the protective layer 55 in sequence, and pattern the protective layer 55 to form the first recessed portion 5z1, and then prepare the first filter layer 61. In this case, the refractive index of the protective layer 55 is relatively low, for example, the refractive index of the protective layer 55 can be greater than or equal to 1.45 and less than or equal to 1.55; the refractive index of the base layer 51 is relatively high, for example, the refractive index of the base layer 51 can be greater than or equal to 1.7 and less than or equal to 1.85; the refractive index of the touch insulation layer 53 is relatively low, for example, the refractive index of the touch insulation layer 53 can be greater than or equal to 1.45 and less than or equal to 1.55.

[0315] Reference Figure 35As shown, the first recessed portion 5z1 can be provided in the touch insulating layer 53, and the second protruding portion 5z6 and the third protruding portion 5z7 can be provided in the base layer 51; the specific process is to prepare the base layer 51 and pattern it to form the second protruding portion 5z6 and the third protruding portion 5z7, and then prepare the second filter layer 62, the third filter layer 63, the first touch function layer 52 and the touch insulating layer 53 in sequence, and pattern the touch insulating layer 53 to form the first recessed portion 5z1, and then prepare the first filter layer 61, the second touch function layer 54 and the protective layer 55 in sequence. In this case, the refractive index of the touch insulation layer 53 is relatively low, for example, the refractive index of the touch insulation layer 53 can be greater than or equal to 1.45 and less than or equal to 1.55; the refractive index of the base layer 51 is relatively high, for example, the refractive index of the base layer 51 can be greater than or equal to 1.7 and less than or equal to 1.85; the refractive index of the protective layer 55 is relatively low, for example, the refractive index of the protective layer 55 can be greater than or equal to 1.45 and less than or equal to 1.55.

[0316] Reference Figure 31 As shown, the first recessed portion 5z1 may be provided on the base layer 51, the second protruding portion 5z6 may be provided on the touch insulating layer 53 and the protective layer 55, and the third protruding portion 5z7 may be provided on the touch insulating layer 53 and the protective layer 55. Specifically, the touch insulating layer 53 may include a first sub-protruding portion 5z61 and a second sub-protruding portion 5z71 that are spaced apart, and the protective layer 55 may include a third sub-protruding portion 5z62 and a fourth sub-protruding portion 5z72 that are spaced apart, the third sub-protruding portion 5z62 being provided on a side of the first sub-protruding portion 5z61 away from the display back panel 10, and the fourth sub-protruding portion 5z72 being provided on a side of the second sub-protruding portion 5z71 away from the display back panel 10, the second protruding portion 5z6 may include a first sub-protruding portion 5z61 and a third sub-protruding portion 5z62 that are stacked, and the third protruding portion 5z7 may include a second sub-protruding portion 5z71 and a fourth sub-protruding portion 5z72 that are stacked. The specific process is as follows: a base layer 51 is prepared and patterned to form a first recessed portion 5z1. A first filter layer 61, a first touch function layer 52, a touch insulating layer 53, a second touch function layer 54, and a protective layer 55 are then sequentially formed. The touch insulating layer 53 and the protective layer 55 are then simultaneously patterned to form a second protruding portion 5z6 and a third protruding portion 5z7. Finally, a second filter layer 62 and a third filter layer 63 are sequentially formed. In this case, the base layer 51 has a relatively low refractive index, for example, greater than or equal to 1.45 and less than or equal to 1.55. The touch insulating layer 53 and the protective layer 55 have relatively high refractive indices, for example, greater than or equal to 1.7 and less than or equal to 1.85.

[0317] Reference Figure 36As shown, the first recessed portion 5z1 may be provided on the protective layer 55, the second protruding portion 5z6 may be provided on the base layer 51 and the touch insulating layer 53, and the third protruding portion 5z7 may be provided on the base layer 51 and the touch insulating layer 53. Specifically, the base layer 51 may include a first sub-protruding portion 5z61 and a second sub-protruding portion 5z71 that are spaced apart, and the touch insulating layer 53 may include a third sub-protruding portion 5z62 and a fourth sub-protruding portion 5z72 that are spaced apart, the third sub-protruding portion 5z62 being provided on a side of the first sub-protruding portion 5z61 away from the display back panel 10, and the fourth sub-protruding portion 5z72 being provided on a side of the second sub-protruding portion 5z71 away from the display back panel 10, the second protruding portion 5z6 may include a first sub-protruding portion 5z61 and a third sub-protruding portion 5z62 that are stacked, and the third protruding portion 5z7 may include a second sub-protruding portion 5z71 and a fourth sub-protruding portion 5z72 that are stacked. The specific process is to sequentially form a base layer 51, a first touch function layer 52, and a touch insulation layer 53. The base layer 51 and the touch insulation layer 53 are then patterned to form the second protrusion 5z6 and the third protrusion 5z7. Then, the second filter layer 62, the third filter layer 63, the second touch function layer 54, and the protective layer 55 are sequentially formed. The protective layer 55 is patterned to form the first recessed portion 5z1, and finally, the first filter layer 61 is formed. In this case, the refractive index of the protective layer 55 is relatively low, for example, the refractive index of the protective layer 55 can be greater than or equal to 1.45 and less than or equal to 1.55. The refractive index of the base layer 51 and the touch insulation layer 53 is relatively high, for example, the refractive index of the base layer 51 and the touch insulation layer 53 can be greater than or equal to 1.7 and less than or equal to 1.85.

[0318] When the first recessed portion 5z1 is provided in the base layer 51, the first filter layer 61 does not completely cover the top surface of the base layer 51 facing away from the display backplane 10. Specifically, the ring width of the portion where the first filter layer 61 overlaps with the side of the base layer 51 facing away from the display backplane 10 is greater than or equal to 0 and less than or equal to 5 microns. For example, the ring width of the portion where the first filter layer 61 overlaps with the side of the base layer 51 facing away from the display backplane 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, 2 microns, 2.5 microns, 3 microns, 3.5 microns, 4 microns, 4.5 microns, and so on.

[0319] When the first recessed portion 5z1 is provided in the touch insulating layer 53, the first filter layer 61 does not completely cover the top surface of the touch insulating layer 53 facing away from the display backplane 10. Specifically, the ring width of the portion where the first filter layer 61 overlaps with the surface of the touch insulating layer 53 facing away from the display backplane 10 is greater than or equal to 0 and less than or equal to 5 microns. For example, the ring width of the portion where the first filter layer 61 overlaps with the surface of the touch insulating layer 53 facing away from the display backplane 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, 2 microns, 2.5 microns, 3 microns, 3.5 microns, 4 microns, 4.5 microns, and so on.

[0320] When the first recessed portion 5z1 is provided in the protective layer 55, the first filter layer 61 does not completely cover the top surface of the protective layer 55 facing away from the display backplane 10. Specifically, the ring width of the portion where the first filter layer 61 overlaps with the side of the protective layer 55 facing away from the display backplane 10 is greater than or equal to 0 and less than or equal to 5 microns. For example, the ring width of the portion where the first filter layer 61 overlaps with the side of the protective layer 55 facing away from the display backplane 10 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, 2 microns, 2.5 microns, 3 microns, 3.5 microns, 4 microns, 4.5 microns, and so on.

[0321] Reference Figure 1-Figure 36 As shown, the display panel may further include a light-shielding layer 7 and a second planarizing layer 8; the light-shielding layer 7 is provided on the side of the touch layer group 5 away from the display backplane 10, and a first via 71, a second via 72 and a third via 73 are provided on the light-shielding layer 7, the orthographic projection of the first via 71 on the display backplane 10 covers the first sub-pixel 351, and the area of ​​the orthographic projection of the first via 71 on the display backplane 10 is larger than the area of ​​the first sub-pixel 351; the orthographic projection of the second via 72 on the display backplane 10 covers the second sub-pixel 352, and the area of ​​the orthographic projection of the second via 72 on the display backplane 10 is larger than the area of ​​the second sub-pixel 352; the orthographic projection of the third via 73 on the display backplane 10 covers the third sub-pixel 353, and the area of ​​the orthographic projection of the third via 73 on the display backplane 10 is larger than the area of ​​the third sub-pixel 353. Such a configuration prevents the light shielding layer 7 from blocking the forward light extraction efficiency of the first sub-pixel 351 , the second sub-pixel 352 and the third sub-pixel 353 .

[0322] Reference Figure 1-Figure 27As shown, in some example embodiments of the present disclosure, the orthographic projection of the light-shielding layer 7 on the display back panel 10 has no overlap with the orthographic projections of the first recessed portion 5z1, the second recessed portion 5z2, and the third recessed portion 5z3 on the display back panel 10, and the light-shielding layer 7 can extend to the edges of the first recessed portion 5z1, the second recessed portion 5z2, and the third recessed portion 5z3 at most, so as to prevent the light-shielding layer 7 from blocking the side walls of the first recessed portion 5z1, the second recessed portion 5z2, and the third recessed portion 5z3, and to prevent the light-shielding layer 7 from affecting the light extraction efficiency of the display panel.

[0323] Reference Figures 28-36 As shown, in some example embodiments of the present disclosure, the orthographic projection of the light-shielding layer 7 on the display back panel 10 has no overlap with the orthographic projections of the first recessed portion 5z1, the second protruding portion 5z6, and the third protruding portion 5z7 on the display back panel 10; the light-shielding layer 7 can extend to the edges of the first recessed portion 5z1, the second protruding portion 5z6, and the third protruding portion 5z7 at most, so as to prevent the light-shielding layer 7 from blocking the side walls of the first recessed portion 5z1, the second protruding portion 5z6, and the third protruding portion 5z7, and to prevent the light-shielding layer 7 from affecting the light extraction efficiency of the display panel.

[0324] The second planarization layer 8 is arranged on the side of the light-shielding layer 7 away from the display back panel 10. The display panel can be protected and planarized by the second planarization layer 8, which is beneficial for subsequent bonding with the cover plate. The material of the second planarization layer 8 can be resin, and the refractive index of the second planarization layer 8 is low. Specifically, the refractive index of the second planarization layer 8 can be greater than or equal to 1.45 and less than or equal to 1.5. For example, the refractive index of the second planarization layer 8 can be 1.46, 1.47, 1.48, 1.49, etc.

[0325] Based on the same inventive concept, an exemplary embodiment of the present disclosure provides a display device, which may include any of the display panels described above. The specific structure of the display panel has been described in detail above, so it will not be repeated here.

[0326] The specific type of the display device is not particularly limited, and any type of display device commonly used in the field can be used, such as mobile devices such as mobile phones, wearable devices such as watches, VR devices, etc. Those skilled in the art can make corresponding choices based on the specific purpose of the display device, which will not be repeated here.

[0327] It should be noted that, in addition to the display panel, the display device also includes other necessary components and components, such as the housing, circuit board, power cord, etc. Taking the display as an example, technical personnel in this field can make corresponding supplements based on the specific usage requirements of the display device, which will not be repeated here.

[0328] Compared with the prior art, the beneficial effects of the display device provided by the exemplary embodiment of the present invention are the same as the beneficial effects of the display panel provided by the above exemplary embodiment, and are not described in detail here.

[0329] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. A display panel, characterized in that: include: A display backplane comprising a first sub-pixel, a second sub-pixel, and a third sub-pixel; a touch layer group, disposed on the light-emitting side of the display backplane, the touch layer group including an insulating layer group including at least two insulating layers, a first recessed portion being provided on the insulating layer group, an orthographic projection of the first recessed portion on the display backplane at least partially overlapping with the first sub-pixel; a first filter layer provided on the light-emitting side of the display backplane, wherein at least a portion of the first filter layer is located in the first recessed portion, and a refractive index of the first filter layer is greater than a refractive index of the insulating layer in which the first recessed portion is provided; a second filter layer, provided on the light-emitting side of the display backplane, wherein the refractive index of the second filter layer is different from that of the first filter layer; A second recessed portion is provided on the insulating layer group, an orthographic projection of the second recessed portion on the display backplane at least partially overlaps with the second sub-pixel, at least a portion of the second filter layer is located within the second recessed portion, a refractive index of the second filter layer is greater than a refractive index of the insulating layer in which the second recessed portion is provided, and an area of ​​a total reflection surface of the recessed portion corresponding to the one with the larger refractive index between the first filter layer and the second filter layer is smaller; Alternatively, the insulating layer group includes a second protrusion, the orthographic projection of the second protrusion on the display backplane at least partially overlaps with the second sub-pixel, the second filter layer is arranged on the side of the second protrusion facing away from the display backplane, and covers at least a portion of the side wall of the second protrusion, the refractive index of the second filter layer is smaller than the refractive index of the second protrusion, and the distance between the first recessed portion or the second protrusion corresponding to the one with the larger refractive index between the first filter layer and the second filter layer and the display backplane is small.

2. The display panel according to claim 1, wherein: The display panel further includes: a third filter layer, provided on the light-emitting side of the display backplane, wherein the refractive index of the third filter layer is different from that of the first filter layer; A third recessed portion is provided on the insulating layer group, an orthographic projection of the third recessed portion on the display backplane at least partially overlaps with the third sub-pixel, at least a portion of the third filter layer is located within the third recessed portion, a refractive index of the third filter layer is greater than a refractive index of the insulating layer in which the third recessed portion is provided, and an area of ​​a total reflection surface of the recessed portion corresponding to the one with the larger refractive index between the first filter layer and the third filter layer is smaller; Alternatively, the insulating layer group includes a third protrusion, the orthographic projection of the third protrusion on the display backplane at least partially overlaps with the third sub-pixel, the third filter layer is arranged on a side of the third protrusion facing away from the display backplane, and covers at least a portion of the side wall of the third protrusion, the refractive index of the third filter layer is smaller than the refractive index of the insulating layer on which the third protrusion is arranged, and the distance between the first recessed portion or the third protrusion corresponding to the one with the larger refractive index between the first filter layer and the third filter layer and the display backplane is small.

3. The display panel according to claim 2, wherein: The distance between a surface of the first concave portion close to the display back plate and the display back plate is a first distance, the distance between a surface of the second protrusion close to the display back plate and the display back plate is a second distance, and the distance between a surface of the third protrusion close to the display back plate and the display back plate is a third distance; The refractive index of the third filter layer is smaller than that of the first filter layer, the refractive index of the second filter layer is smaller than that of the first filter layer, the second distance is larger than the first distance, and the third distance is larger than the first distance; Alternatively, the refractive index of the third filter layer is greater than that of the first filter layer, the refractive index of the second filter layer is greater than that of the first filter layer, the second distance is smaller than the first distance, and the third distance is smaller than the first distance.

4. The display panel according to claim 3, wherein: The refractive index of the second filter layer is equal to the refractive index of the third filter layer, and the second distance is equal to the third distance; or, the refractive index of the second filter layer is smaller than the refractive index of the third filter layer, and the second distance is greater than the third distance; or, the refractive index of the second filter layer is greater than the refractive index of the third filter layer, and the second distance is smaller than the third distance.

5. The display panel according to claim 3, wherein: The second protrusion is configured as a single-layer structure or a double-layer structure, and the third protrusion is configured as a single-layer structure or a double-layer structure.

6. The display panel according to claim 5, wherein: The touch layer group includes a base layer, a first touch function layer, a touch insulation layer, a second touch function layer and a protective layer stacked in sequence, wherein the base layer, the touch insulation layer and the protective layer are all the insulating layers; The first recessed portion is provided in the base layer, and the second protruding portion and the third protruding portion are provided in the touch insulating layer; or, the first recessed portion is provided in the base layer, and the second protruding portion and the third protruding portion are provided in the protective layer; or, the first recessed portion is provided in the touch insulating layer, and the second protruding portion and the third protruding portion are provided in the protective layer; or, the first recessed portion is provided in the base layer, the touch insulating layer includes a first sub-protruding portion and a second sub-protruding portion, and the protective layer includes a third sub-protruding portion and a fourth sub-protruding portion, the third sub-protruding portion is provided on a side of the first sub-protruding portion away from the display backplane, the fourth sub-protruding portion is provided on a side of the second sub-protruding portion away from the display backplane, the second protruding portion includes the first sub-protruding portion and the third sub-protruding portion, and the third protruding portion includes the second sub-protruding portion and the fourth sub-protruding portion; or, the first recessed portion is provided in the base layer, the second protruding portion is provided in the The touch insulation layer, the third protrusion is provided on the protective layer; or the first recessed portion is provided on the base layer, the second protrusion is provided on the protective layer, and the third protrusion is provided on the touch insulation layer; or the first recessed portion is provided on the protective layer, and the second protrusion and the third protrusion are provided on the base layer; or the first recessed portion is provided on the touch insulation layer, and the second protrusion and the third protrusion are provided on the base layer; or the first recessed portion is provided on the touch insulation layer, and the second protrusion and the third protrusion are provided on the base layer; or the first recessed portion is provided on the protective layer, the base layer includes a first sub-protrusion and a second sub-protrusion, the touch insulation layer includes a third sub-protrusion and a fourth sub-protrusion, the third sub-protrusion is provided on a side of the first sub-protrusion away from the display backplane, the fourth sub-protrusion is provided on a side of the second sub-protrusion away from the display backplane, the second protrusion includes the first sub-protrusion and the third sub-protrusion, and the third protrusion includes the second sub-protrusion and the fourth sub-protrusion.

7. The display panel according to claim 2, wherein: The first recessed portion, the second recessed portion, and the third recessed portion are provided in the same insulating layer.

8. The display panel according to claim 7, wherein: The first recessed portion, the second recessed portion, and the third recessed portion are provided on one insulating layer, or the first recessed portion, the second recessed portion, and the third recessed portion are provided on two adjacent insulating layers.

9. The display panel according to claim 8, wherein: The touch layer group includes a base layer, a first touch function layer, a touch insulation layer, a second touch function layer and a protective layer stacked in sequence, wherein the base layer, the touch insulation layer and the protective layer are all the insulating layers; The first recessed portion, the second recessed portion, and the third recessed portion are provided in the base layer; or, the first recessed portion, the second recessed portion, and the third recessed portion are provided in the touch insulating layer; or, the first recessed portion, the second recessed portion, and the third recessed portion are provided in the protective layer; or, the base layer is provided with a first sub-recessed portion, a second sub-recessed portion, and a third sub-recessed portion, and the touch insulating layer is provided with a fourth sub-recessed portion, a fifth sub-recessed portion, and a sixth sub-recessed portion, the first recessed portion includes the fourth sub-recessed portion and the first sub-recessed portion that are interconnected, and the second recessed portion includes the fourth sub-recessed portion and the first sub-recessed portion that are interconnected. The fifth sub-recessed portion and the second sub-recessed portion are interconnected, and the third recessed portion includes the sixth sub-recessed portion and the third sub-recessed portion that are interconnected; or, the touch insulating layer is provided with a first sub-recessed portion, a second sub-recessed portion and a third sub-recessed portion, and the protective layer is provided with a fourth sub-recessed portion, a fifth sub-recessed portion and a sixth sub-recessed portion, the first recessed portion includes the fourth sub-recessed portion and the first sub-recessed portion that are interconnected, the second recessed portion includes the fifth sub-recessed portion and the second sub-recessed portion that are interconnected, and the third recessed portion includes the sixth sub-recessed portion and the third sub-recessed portion that are interconnected.

10. The display panel according to claim 9, wherein: The refractive index of the first filter layer is greater than that of the second filter layer, and the refractive index of the first filter layer is greater than that of the third filter layer; the first recessed portion is configured to have a shape that is compatible with the first sub-pixel, the second recessed portion is configured to have a ring shape that is compatible with the second sub-pixel, and the third recessed portion is configured to have a ring shape that is compatible with the third sub-pixel; And / or, the first recessed portion is configured as a blind hole that does not penetrate the insulating layer, the second recessed portion is configured as a through hole that penetrates the insulating layer, and the third recessed portion is configured as a through hole that penetrates the insulating layer.

11. The display panel according to claim 9, wherein The touch layer group further includes: A functional layer is provided between two adjacent insulating layers, the functional layer includes a dummy portion, the dummy portion is provided with a via, the orthographic projection of the via on the display backplane covers the first sub-pixel, and the dummy portion extends at least to the side wall of the first recessed portion.

12. The display panel according to claim 11, wherein: The functional layer is the first touch functional layer or the second touch functional layer.

13. The display panel according to claim 9, wherein: The orthographic projection area of ​​one end of the fourth sub-recessed portion close to the first sub-recessed portion on the display back panel is larger than the orthographic projection area of ​​one end of the first sub-recessed portion close to the fourth sub-recessed portion on the display back panel, so that the first recessed portion forms a step structure with an opening larger than the bottom.

14. The display panel according to claim 6 or 9, characterized in that: The first touch function layer includes a bridging portion, the second touch function layer includes a touch electrode, the orthographic projection of the first filter layer on the display backplane does not overlap with the orthographic projection of the bridging portion and the touch electrode on the display backplane, the orthographic projection of the second filter layer on the display backplane does not overlap with the orthographic projection of the bridging portion and the touch electrode on the display backplane, and the orthographic projection of the third filter layer on the display backplane does not overlap with the orthographic projection of the bridging portion and the touch electrode on the display backplane.

15. The display panel according to claim 11, wherein: The distance between the edge line of the orthographic projection of the via hole on the display backplane and the edge line of the first sub-pixel is greater than or equal to 0 and less than or equal to 1 micron; and / or, the distance between the edge line of the orthographic projection of the via hole on the display backplane and the edge line of the orthographic projection of the first recessed portion on the display backplane is greater than or equal to 0 and less than or equal to 2 microns; and / or, the dummy portion is configured to be ring-shaped, and the ring width of the dummy portion is greater than or equal to 3 microns and less than or equal to 4 microns.

16. The display panel according to claim 10, wherein: The thickness of the insulating layer in which the first recess is set is greater than or equal to 1.5 microns and less than or equal to 2.5 microns. When the first recess is set as a blind hole that does not penetrate the insulating layer, the thickness of the insulating layer at the first recess is greater than or equal to 0.5 microns and less than or equal to 1 micron.

17. The display panel according to any one of claims 2 to 13, 15, and 16, wherein: The orthographic projection of the first recessed portion on the display backplane completely covers the first sub-pixel, and / or the orthographic projection of the second recessed portion on the display backplane completely covers the second sub-pixel, and / or the orthographic projection of the third recessed portion on the display backplane completely covers the third sub-pixel; Alternatively, the orthographic projection of the first recessed portion on the display backplane completely covers the first sub-pixel, and / or the orthographic projection of the second protruding portion on the display backplane completely covers the second sub-pixel, and / or the orthographic projection of the third protruding portion on the display backplane completely covers the third sub-pixel.

18. The display panel according to claim 17, wherein: The distance between the edge line of the orthographic projection of the first recessed portion on the display backplane and the edge line of the first sub-pixel is greater than or equal to 0.5 micrometers and less than or equal to 2 micrometers, and / or the distance between the edge line of the orthographic projection of the second recessed portion on the display backplane and the edge line of the second sub-pixel is greater than or equal to 0.5 micrometers and less than or equal to 2 micrometers, and / or the distance between the orthographic projection of the third recessed portion on the display backplane and the edge line of the third sub-pixel is greater than or equal to 0.5 micrometers and less than or equal to 2 micrometers; Alternatively, the distance between the edge line of the orthographic projection of the first recessed portion on the display backplane and the edge line of the first sub-pixel is greater than or equal to 0.5 microns and less than or equal to 2 microns, and / or the distance between the edge line of the orthographic projection of the second protruding portion on the display backplane and the edge line of the second sub-pixel is greater than or equal to 0.5 microns and less than or equal to 2 microns, and / or the distance between the orthographic projection of the third protruding portion on the display backplane and the edge line of the third sub-pixel is greater than or equal to 0.5 microns and less than or equal to 2 microns.

19. The display panel according to any one of claims 2 to 13, 15, and 16, wherein: The distance between the sidewall of the first recess and the center of the first sub-pixel in the first direction increases as the height of the sidewall of the first recess in the second direction increases; The distance between the sidewall of the second recess and the center of the second sub-pixel in the first direction increases as the height of the sidewall of the second recess increases in the second direction, and the distance between the sidewall of the third recess and the center of the third sub-pixel in the first direction increases as the height of the sidewall of the third recess increases in the second direction; or, when the second recess is arranged in an annular shape, the distance between the outer ring sidewall of the second recess and the center of the second sub-pixel in the first direction increases as the height of the outer ring sidewall of the second recess increases in the second direction, and the distance between the inner ring sidewall of the second recess and the center of the second sub-pixel in the first direction decreases as the height of the inner ring sidewall of the second recess increases in the second direction; when the third recess is arranged in an annular shape, the distance between the outer ring sidewall of the third recess and the center of the third sub-pixel in the first direction increases as the height of the outer ring sidewall of the third recess increases in the second direction, and the distance between the inner ring sidewall of the third recess and the center of the third sub-pixel in the first direction decreases as the height of the inner ring sidewall of the third recess increases in the second direction; Alternatively, the distance between the sidewall of the second protrusion and the center of the second sub-pixel in the first direction increases as the height of the sidewall of the second protrusion decreases in the second direction, and the distance between the sidewall of the third protrusion and the center of the third sub-pixel in the first direction increases as the height of the sidewall of the third protrusion decreases in the second direction; The second direction is perpendicular to a surface of the display backplane where the touch layer group is disposed, and the first direction is parallel to a surface of the display backplane where the touch layer group is disposed.

20. The display panel according to claim 19, wherein The sidewall of the first recessed portion includes an inclined surface, and an angle between the sidewall of the first recessed portion and the first reference plane is greater than or equal to 55° and less than or equal to 85°; The sidewall of the second recessed portion includes an inclined surface, and the angle between the sidewall of the second recessed portion and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the sidewall of the third recessed portion includes an inclined surface, and the angle between the sidewall of the third recessed portion and the first reference plane is greater than or equal to 55° and less than or equal to 85°; Alternatively, the outer ring sidewall of the second recessed portion includes a bevel, and the angle between the outer ring sidewall of the second recessed portion and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the inner ring sidewall of the second recessed portion includes a bevel, and the angle between the inner ring sidewall of the second recessed portion and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the outer ring sidewall of the third recessed portion includes a bevel, and the angle between the outer ring sidewall of the third recessed portion and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the inner ring sidewall of the third recessed portion includes a bevel, and the angle between the inner ring sidewall of the third recessed portion and the first reference plane is greater than or equal to 55° and less than or equal to 85°; Alternatively, the sidewall of the second protrusion includes an inclined surface, and the angle between the sidewall of the second protrusion and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the sidewall of the third protrusion includes an inclined surface, and the angle between the sidewall of the third protrusion 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 surface of the display backplane on which the touch layer group is disposed.

21. The display panel according to any one of claims 2 to 13, 15 and 16, wherein: The refractive index of the first filter layer is greater than or equal to 1.65 and less than or equal to 1.75, the refractive index of the second filter layer is greater than or equal to 1.55 and less than or equal to 1.65, and the refractive index of the third filter layer is greater than or equal to 1.55 and less than or equal to 1.65; The refractive index of the insulating layer provided with the first recessed portion, the second recessed portion and the third recessed portion is greater than or equal to 1.45 and less than or equal to 1.55; or, the refractive index of the insulating layer provided with the first recessed portion is greater than or equal to 1.45 and less than or equal to 1.55, the refractive index of the insulating layer provided with the second protruding portion is greater than or equal to 1.7 and less than or equal to 1.85, and the refractive index of the insulating layer provided with the third protruding portion is greater than or equal to 1.7 and less than or equal to 1.

85.

22. The display panel according to any one of claims 2 to 13, 15, and 16, wherein: The display panel further includes: a light shielding layer provided on a side of the touch layer group facing away from the display backplane, the light shielding layer being provided with a first via hole, a second via hole, and a third via hole, the orthographic projection of the first via hole on the display backplane covering the first sub-pixel, the orthographic projection of the second via hole on the display backplane covering the second sub-pixel, and the orthographic projection of the third via hole on the display backplane covering the third sub-pixel; the orthographic projection of the light shielding layer on the display backplane not overlapping with the orthographic projections of the first recessed portion, the second recessed portion, and the third recessed portion on the display backplane, or the orthographic projection of the light shielding layer on the display backplane not overlapping with the orthographic projections of the first recessed portion, the second protruding portion, and the third protruding portion on the display backplane; The second planarization layer is arranged on a side of the light shielding layer away from the display backplane.

23. The display panel according to any one of claims 2 to 13, 15, and 16, wherein: The first sub-pixel is a red sub-pixel, the second sub-pixel is a green sub-pixel, and the third sub-pixel is a blue sub-pixel; the first filter layer is a red filter layer, the second filter layer is a green filter layer, and the third filter layer is a blue filter layer.

24. The display panel according to any one of claims 1 to 13, 15, and 16, wherein: The insulating layer is made of organic material.

25. The display panel according to any one of claims 1 to 13, 15, and 16, wherein: The display backplane further includes an encapsulation layer group, which is disposed on a side of the touch layer group close to the first sub-pixel, the second sub-pixel, and the third sub-pixel.

26. A display device, characterized in that: include: The display panel according to any one of claims 1 to 25.

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