Display panel and display device

Abstract

The utility model relates to the technical field of display. The display panel comprises a display back plate, a first pixel, a second pixel, a first pixel and a second pixel, the touch layer is assembled on the light emitting side of the display backboard and comprises a first touch function layer, the first touch function layer comprises a dummy part, the dummy part is provided with a via hole, and the orthographic projection of the via hole on the display backboard covers the first sub-pixel; the light adjusting layer is arranged on the side, away from the display back plate, of the first touch function layer, a first concave part and a second concave part are arranged on the light adjusting layer, the orthographic projection of the first concave part on the display back plate is overlapped with the first sub-pixel, and the orthographic projection of the second concave part on the display back plate is overlapped with the second sub-pixel; the dummy part at least extends to the side wall of the first concave part; 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 light adjusting layer; 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 larger than that of the light adjusting layer and smaller than that of the first filter layer.

Description

Technical Field

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

[0002] OLED (Organic Electroluminescence Display) display panels can meet the new demands of consumers for display technologies due to their many advantages such as high brightness, low power consumption, fast response, high definition, good flexibility, and high luminous efficiency.

[0003] However, currently, the light extraction efficiencies of sub-pixels of different colors in the display panel are different, resulting in the problem of color deviation in the display panel.

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

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

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

[0007] A display backplane including 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 includes a first touch functional layer. The first touch functional layer includes a dummy portion. A via hole is provided in the dummy portion, and the positive projection of the via hole on the display backplane covers the first sub-pixel;

[0009] A light adjustment layer disposed on the side of the first touch functional layer away from the display backplane. A first recess and a second recess are provided on the light adjustment layer. The positive projection of the first recess on the display backplane at least partially overlaps with the first sub-pixel, and the positive projection of the second recess on the display backplane at least partially overlaps with the second sub-pixel; The dummy portion at least extends to the side wall of the first recess;

[0010] A first filter layer, at least a part of the first filter layer is located in the first recess, and the refractive index of the first filter layer is greater than the refractive index of the light adjustment layer;

[0011] A second light filtering layer, at least a part of the second light filtering layer is located in the second recess, the refractive index of the second light filtering layer is greater than that of the light adjusting layer, and the refractive index of the second light filtering layer is less than that of the first light filtering layer.

[0012] 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.

[0013] 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 orthographic projection of the first recess on the display backplane is greater than or equal to 0 and less than or equal to 2 microns.

[0014] In an exemplary embodiment of the present disclosure, the dummy part is arranged in a ring shape, and the ring width of the dummy part is greater than or equal to 3 microns and less than or equal to 4 microns.

[0015] In an exemplary embodiment of the present disclosure, a third recess is further provided on the light adjusting layer, the orthographic projection of the third recess on the display backplane at least partially overlaps with the third sub-pixel, and the display panel further includes:

[0016] A third light filtering layer, at least a part of the third light filtering layer is located in the third recess, the refractive index of the third light filtering layer is greater than that of the light adjusting layer, and the refractive index of the third light filtering layer is less than that of the first light filtering layer.

[0017] In an exemplary embodiment of the present disclosure, the orthographic projection of the first recess on the display backplane completely covers the first sub-pixel, and / or the orthographic projection of the second recess on the display backplane completely covers the second sub-pixel, and / or the orthographic projection of the third recess on the display backplane completely covers the third sub-pixel.

[0018] In an exemplary embodiment of the present disclosure, the first recess, the second recess, and the third recess are through holes provided on the light adjusting layer.

[0019] In an exemplary embodiment of the present disclosure, the light adjusting layer includes a second island and a third island, the second island is located in the second recess, and the third island is located in the third recess.

[0020] In an exemplary embodiment of the present disclosure, the height of the sidewall of the second island in the second direction increases as the distance from the center of the second sub-pixel in the first direction decreases; the height of the sidewall of the third island in the second direction increases as the distance from the center of the third sub-pixel in the first direction decreases; the second direction is perpendicular to the surface of the display backplane where the touch layer group is disposed, and the first direction is parallel to the surface of the display backplane where the touch layer group is disposed.

[0021] In an exemplary embodiment of the present disclosure, the sidewall of the second island includes an inclined surface, and the angle between the sidewall of the second island and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the sidewall of the third island includes an inclined surface, and the angle between the sidewall of the third island and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the first reference plane is parallel to the surface of the display backplane where the touch layer group is disposed.

[0022] In an exemplary embodiment of the present disclosure, the ratio of the area of the orthographic projection of the second island on the display backplane to the area of the orthographic projection of the second recess on the display backplane is greater than or equal to 3% and less than or equal to 40%, and the ratio of the area of the orthographic projection of the third island on the display backplane to the area of the orthographic projection of the third recess on the display backplane is greater than or equal to 3% and less than or equal to 40%.

[0023] In an exemplary embodiment of the present disclosure, the maximum dimension of the orthographic projection of the second island on the display backplane is greater than or equal to 3 microns and less than or equal to 5 microns, and the maximum dimension of the orthographic projection of the third island on the display backplane is greater than or equal to 3 microns and less than or equal to 5 microns.

[0024] In an exemplary embodiment of the present disclosure, the first recess is a blind hole provided on the light adjustment layer, and the second recess and the third recess are through holes provided on the light adjustment layer.

[0025] In an exemplary embodiment of the present disclosure, the thickness of the light adjustment layer is greater than or equal to 1.5 microns and less than or equal to 2.5 microns, and the thickness of the light adjustment layer at the first recess is greater than or equal to 0.5 microns and less than or equal to 1 micron.

[0026] In an exemplary embodiment of the present disclosure, the height of the sidewall of the first recess in the second direction increases as the distance from the center of the first sub-pixel in the first direction increases; the height of the sidewall of the second recess in the second direction increases as the distance from the center of the second sub-pixel in the first direction increases; the height of the sidewall of the third recess in the second direction increases as the distance from the center of the third sub-pixel in the first direction increases; the second direction is perpendicular to the surface of the display backplane where the touch layer group is disposed, and the first direction is parallel to the surface of the display backplane where the touch layer group is disposed.

[0027] In an exemplary embodiment of the present disclosure, the sidewall of the first recess includes an inclined surface, and the angle between the sidewall of the first recess and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the sidewall of the second recess includes an inclined surface, and the angle between the sidewall of the second recess and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the sidewall of the third recess includes an inclined surface, and the angle between the sidewall of the third recess and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the first reference plane is parallel to the surface of the display backplane where the touch layer group is disposed.

[0028] In an exemplary embodiment of the present disclosure, the display panel further includes:

[0029] A light-shielding layer, disposed on the side of the light-adjusting layer away from the display backplane. The light-shielding layer is provided with a first through-hole, a second through-hole, and a third through-hole. The orthographic projection of the first through-hole on the display backplane covers the first sub-pixel, the orthographic projection of the second through-hole on the display backplane covers the second sub-pixel, and the orthographic projection of the third through-hole on the display backplane covers the third sub-pixel;

[0030] A second planarization layer, disposed on the side of the light-shielding layer away from the display backplane.

[0031] In an exemplary embodiment of the present disclosure, the first filter layer is located in the first through-hole, the second filter layer is located in the second through-hole, the third filter layer is located in the third through-hole, the distance between the hole wall of the first through-hole and the first filter layer is greater than or equal to 0 and less than or equal to 2 micrometers, the distance between the hole wall of the second through-hole and the second filter layer is greater than or equal to 0 and less than or equal to 2 micrometers, and the distance between the hole wall of the third through-hole and the third filter layer is greater than or equal to 0 and less than or equal to 2 micrometers.

[0032] In an exemplary embodiment of the present disclosure, a part of the first light filtering layer, the second light filtering layer, and the third light filtering layer extends to the side of the light adjusting layer away from the display backplane and does not overlap; the ring width of the overlapping part of the first light filtering layer and the light adjusting layer is greater than or equal to 0 and less than or equal to 2 microns, the ring width of the overlapping part of the second light filtering layer and the light adjusting layer is greater than or equal to 0 and less than or equal to 2 microns, and the ring width of the overlapping part of the third light filtering layer and the light adjusting layer is greater than or equal to 0 and less than or equal to 2 microns.

[0033] In an exemplary embodiment of the present disclosure, a fourth recess, a fifth recess, and a sixth recess are provided on the light adjusting layer. The fourth recess surrounds the first recess, the fifth recess surrounds the second recess, and the sixth recess surrounds the third recess; the light shielding layer is further provided in the fourth recess, the fifth recess, and the sixth recess, or the light shielding layer is further provided in the fourth recess, the fifth recess, and the sixth recess, and the first light filtering layer is further provided in the fourth recess, the second light filtering layer is further provided in the fifth recess, and the third light filtering layer is further provided in the sixth recess.

[0034] In an exemplary embodiment of the present disclosure, a part of the first light filtering layer, the second light filtering layer, and the third light filtering layer extends to the side of the light adjusting layer away from the display backplane and does not overlap, and the light shielding layer is at least provided on the sides of the first light filtering layer, the second light filtering layer, and the third light filtering layer away from the display backplane.

[0035] In an exemplary embodiment of the present disclosure, the distance between the edge line of the orthographic projection of the first via hole on the display backplane and the edge line of the orthographic projection of the first recess on the display backplane is greater than or equal to 1 micron and less than or equal to 3 microns, the distance between the edge line of the orthographic projection of the second via hole on the display backplane and the edge line of the orthographic projection of the second recess on the display backplane is greater than or equal to 1 micron and less than or equal to 3 microns, the distance between the edge line of the orthographic projection of the third via hole on the display backplane and the edge line of the orthographic projection of the third recess on the display backplane is greater than or equal to 1 micron and less than or equal to 3 microns, and a part of the first light filtering layer, the second light filtering layer, and the third light filtering layer extends to the side of the light shielding layer away from the display backplane.

[0036] In an exemplary embodiment of the present disclosure, the thickness of the first light filtering layer is greater than the thickness of the second light filtering layer, and the thickness of the first light filtering layer is greater than the thickness of the third light filtering layer.

[0037] According to another aspect of the present disclosure, a display device is provided, including: the display panel described in any one of the above.

[0038] For the display panel of the present disclosure, on the one hand, when light travels from the first light filtering layer to the light adjusting layer, it is from an optically denser medium to an optically less dense medium. Therefore, total internal reflection is likely to occur at the interface between the first light filtering layer and the side wall of the first recess. The side wall of the first recess causes the obliquely emitted light to undergo total internal reflection to form total internal reflection light, changing the angle of the emitted light, so that the total internal reflection light is more convergent and exits from the front of the display panel, improving the light extraction efficiency of the front of the display panel; when light travels from the second light filtering layer to the light adjusting layer, it is from an optically denser medium to an optically less dense medium. Therefore, total internal reflection is likely to occur at the interface between the second light filtering layer and the side wall of the second recess. The side wall of the second recess causes the obliquely emitted light to undergo total internal reflection to form total internal reflection light, changing the angle of the emitted light, so that the total internal reflection light is more convergent and exits from the front of the display panel, improving the light extraction efficiency of the front of the display panel. On the other hand, the dummy portion at least extends to the side wall of the first recess, such that a part of the side wall of the first recess is occupied by the dummy portion and total internal reflection cannot occur, thereby reducing the light undergoing total internal reflection at the interface between the first light filtering layer and the light adjusting layer, and further reducing the light extraction efficiency of the first sub-pixel. Moreover, the dummy portion can block the light emitted from the first sub-pixel, further reducing the light extraction efficiency of the first sub-pixel, and can reduce or even avoid color shift caused by different gains in the light extraction efficiency of sub-pixels of different colors.

[0039] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and those of ordinary skill in the art can obtain other drawings without creative efforts based on these drawings.

[0041] Figure 1 It is a schematic structural diagram of the first exemplary embodiment of the display panel of the present disclosure.

[0042] Figure 2 is Figure 1 a schematic structural diagram of the display backplane and the touch layer group in

[0043] Figure 3 is Figure 1 a schematic structural diagram of the first recess, the second recess, and the third recess in

[0044] Figure 4Schematic diagram of the second exemplary embodiment of the display panel of the present disclosure.

[0045] Figure 5 is Figure 4 Schematic diagram of the structures of the second and third isolated islands in

[0046] Figure 6 Schematic diagram of the third exemplary embodiment of the display panel of the present disclosure.

[0047] Figure 7 Schematic diagram of the fourth exemplary embodiment of the display panel of the present disclosure.

[0048] Figure 8 Schematic diagram of the fifth exemplary embodiment of the display panel of the present disclosure.

[0049] Figure 9 Schematic diagram of the sixth exemplary embodiment of the display panel of the present disclosure.

[0050] Figure 10 Schematic diagram of the seventh exemplary embodiment of the display panel of the present disclosure.

[0051] Figure 11 Schematic diagram of the eighth exemplary embodiment of the display panel of the present disclosure.

[0052] Figure 12 Schematic diagram of the ninth exemplary embodiment of the display panel of the present disclosure.

[0053] Figure 13 Schematic diagram of the tenth exemplary embodiment of the display panel of the present disclosure.

[0054] Figure 14 Schematic diagram of the eleventh exemplary embodiment of the display panel of the present disclosure.

[0055] Figure 15 Schematic diagram of the twelfth exemplary embodiment of the display panel of the present disclosure.

[0056] Figure 16 Schematic diagram of the thirteenth exemplary embodiment of the display panel of the present disclosure.

[0057] Figure 17 Schematic diagram of the fourteenth exemplary embodiment of the display panel of the present disclosure.

[0058] Figure 18 Schematic diagram of the fifteenth exemplary embodiment of the display panel of the present disclosure.

[0059] Figure 19 Schematic diagram of the sixteenth exemplary embodiment of the display panel of the present disclosure.

[0060] Explanation of reference numerals:

[0061] 10. Display backplane; 1. Substrate

[0062] 2. Driving substrate; 21. Masking layer; 22. Buffer layer; 231. Channel portion; 232. Source connection portion; 233. Drain connection portion; 24. Gate insulating layer; 25. Gate layer; 251. Gate; 26. Interlayer dielectric layer; 27. First connection conductor layer; 271. Source; 272. Drain; 28. First planarization layer

[0063] 3. Light-emitting substrate; 31. First electrode; 32. Pixel definition layer; 321. Opening; 33. Light-emitting layer group; 34. Second electrode; 35. Sub-pixel; 35R. First sub-pixel; 35G. Second sub-pixel; 35B. Third sub-pixel

[0064] 4. Encapsulation layer group

[0065] 5. Touch layer group; 51. Base layer; 52. Second touch function layer; 53. Touch insulating layer; 54. First touch function layer; 541. dummy portion; 5411. via; 55. Protection layer; 542. Touch electrode

[0066] 6. Light adjustment layer; 61. First recess; 611. First part; 612. Second part; 613. Third part; 62. Second recess; 621. Fourth part; 622. Fifth part; 623. Sixth part; 63. Third recess; 631. Seventh part; 632. Eighth part; 633. Ninth part; 64. Fourth recess; 65. Fifth recess; 66. Sixth recess; 67. Second island; 671. First segment; 672. Second segment; 673. Third segment; 68. Third island; 681. Fourth segment; 682. Fifth segment; 683. Sixth segment

[0067] 7R. First filter layer; 7G. Second filter layer; 7B. Third filter layer

[0068] 8. Light-shielding layer; 81. First via; 82. Second via; 83. Third via

[0069] 9. Second planarization layer

[0070] X. First direction; Y. Second direction Detailed implementation

[0071] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various 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 concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their detailed descriptions will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0072] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification only for convenience, for example, according to the directions of the examples described in the drawings. It can be understood that if the device of the icon is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" another structure, it may mean that a structure is integrally formed on another structure, or that a structure is "directly" disposed on another structure, or that a structure is "indirectly" disposed on another structure through another structure.

[0073] 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 "comprising" and "having" are used to mean an open inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.; the terms "first", "second", "third", etc. are used only as labels and are not a limitation on the quantity of their objects.

[0074] In this application, unless otherwise clearly defined and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral one; it can be directly connected or indirectly connected through an intermediate medium. "And / or" is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0075] The example embodiments of the present disclosure provide a display panel, referring to Figures 1 - 19As shown, the display panel may include a display backplane 10, a touch layer group 5, a light adjustment layer 6, a first filter layer 7R, and a second filter layer 7G. The display backplane 10 may include a first sub-pixel 35R, a second sub-pixel 35G, and a third sub-pixel 35B. The touch layer group 5 is disposed on the light-emitting side of the display backplane 10. The touch layer group 5 may include a first touch functional layer 54. The first touch functional layer 54 may include a dummy portion 541. The dummy portion 541 is provided with a via hole 5411. The orthographic projection of the via hole 5411 on the display backplane 10 covers the first sub-pixel 35R. The light adjustment layer 6 is disposed on a side of the first touch functional layer 54 facing away from the display backplane 10. The light adjustment layer 6 is provided with a first recess 61 and a second recess 62. The orthographic projection of the first recess 61 on the display backplane 10 at least partially overlaps with the first sub-pixel 35R. The orthographic projection of the second recess 62 on the display backplane 10 at least partially overlaps with the second sub-pixel 35G. The dummy portion 541 at least extends to a sidewall of the first recess 61. At least a part of the first filter layer 7R is located within the first recess 61. The refractive index of the first filter layer 7R is greater than the refractive index of the light adjustment layer 6. At least a part of the second filter layer 7G is located within the second recess 62. The refractive index of the second filter layer 7G is greater than the refractive index of the light adjustment layer 6, and the refractive index of the second filter layer 7G is less than the refractive index of the first filter layer 7R.

[0076] On the one hand, for the display panel of the present disclosure, when light travels from the first filter layer 7R to the light adjustment layer 6, it is from an optically denser medium to an optically thinner medium. Therefore, total internal reflection is likely to occur at the interface between the first filter layer 7R and the sidewall of the first recess 61. The sidewall of the first recess 61 causes the obliquely emitted light to undergo total internal reflection to form total internal reflection light, changing the angle of the emitted light, so that the total internal reflection light is more convergent and is emitted from the front of the display panel, improving the light extraction efficiency of the front of the display panel. When light travels from the second filter layer 7G to the light adjustment layer 6, it is from an optically denser medium to an optically thinner medium. Therefore, total internal reflection is likely to occur at the interface between the second filter layer 7G and the sidewall of the second recess 62. The sidewall of the second recess 62 causes the obliquely emitted light to undergo total internal reflection to form total internal reflection light, changing the angle of the emitted light, so that the total internal reflection light is more convergent and is emitted from the front of the display panel, improving the light extraction efficiency of the front of the display panel.

[0077] On the other hand, the dummy portion 541 extends at least to the side wall of the first recess 61, so that a part of the side wall of the first recess 61 is occupied by the dummy portion 541 and total reflection cannot occur, thereby reducing the light that undergoes total reflection at the interface between the first light filtering layer 7R and the light regulating layer 6, and further reducing the light extraction efficiency of the first sub-pixel 35R. Moreover, the dummy portion 541 can block the light emitted from the first sub-pixel 35R, further reducing the light extraction efficiency of the first sub-pixel 35R, and can reduce or even avoid color shift caused by different gains in the light extraction efficiency of sub-pixels 35 of different colors.

[0078] 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, the light-emitting side and the non-light-emitting side are oppositely arranged, and a picture can be displayed on the light-emitting side, and the side where the picture is displayed is the display surface.

[0079] The following will be described by taking the OLED display backplane 10 as an example.

[0080] In the present exemplary embodiment, referring to Figure 2 as shown, the display backplane 10 may include a substrate 1. The material of the substrate 1 may include inorganic materials. For example, the inorganic material may be glass, quartz, metal, etc. The material of the substrate 1 may also include organic materials. For example, the organic material may be resin materials such as polyimide, polycarbonate, polyacrylate, polyetherimide, polyethersulfone, polyethylene terephthalate, and polyethylene naphthalate. The substrate 1 may be formed by multiple material layers. For example, the substrate 1 may include multiple substrate layers, and the material of the substrate layer may be any of the above materials. Of course, the substrate 1 may also be provided as a single layer and may be any of the above materials.

[0081] Referring to Figure 2 as 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 substrate 1, and the light-emitting substrate 3 is disposed on the side of the driving substrate 2 away from the 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 circuit can drive the light-emitting device to emit light.

[0082] Specifically, referring to Figure 2As shown, a shielding layer 21 can be provided on one side of the substrate 1. The light incident on the active layer from the substrate 1 will generate photo-generated carriers in the active layer, which will have a great impact on the characteristics of the thin film transistor and ultimately affect the display quality of the display device. By means of the shielding layer 21, the light incident from the substrate 1 can be blocked, thereby avoiding affecting the characteristics of the thin film transistor and the display quality of the display device. Depending on the type of the thin film transistor, the shielding layer 21 can be omitted.

[0083] A buffer layer 22 can also be formed on the side of the shielding layer 21 facing away from the substrate 1. The buffer layer 22 serves to block water vapor and impurity ions in the substrate 1 (especially organic materials), and also serves to increase hydrogen ions for the subsequently formed active layer. The material of the buffer layer 22 is an insulating material, which can insulate and isolate the shielding layer 21 from the active layer. The buffer layer 22 can include silicon nitride, silicon oxide or silicon oxynitride. Depending on the type of the substrate 1 or the process conditions, the buffer layer 22 can be omitted.

[0084] An active layer is provided on the side of the buffer layer 22 facing away from the substrate 1. The active layer can include a channel portion 231 and conductor portions provided at both ends of the channel portion 231. One of the two conductor portions is a source connection portion 232, and the other is a drain connection portion 233. A gate insulating layer 24 is provided on the side of the active layer facing away from the substrate 1, and a gate electrode layer 25 is provided on the side of the gate insulating layer 24 facing away from the substrate 1. The gate electrode layer 25 can include a gate electrode 251 and a gate line (not shown in the figure).

[0085] An interlayer dielectric layer 26 is provided on the side of the gate electrode layer 25 facing away from the substrate 1, and a connection via hole is provided on the interlayer dielectric layer 26, and the connection via hole communicates with the source connection portion 232 and the drain connection portion 233; a first connection conductor layer 27 is provided on the side of the interlayer dielectric layer 26 facing away from the substrate 1. The first connection conductor layer 27 can include a source electrode 271, a drain electrode 272 and a data line (not shown in the figure). The data line can be connected to the source electrode 271, or a part of the data line can be used as the source electrode 271; the source electrode 271 is connected to the source connection portion 232 through the connection via hole on the interlayer dielectric layer 26, and the drain electrode 272 is connected to the drain connection portion 233 through the connection via hole on the interlayer dielectric layer 26.

[0086] In some other exemplary embodiments of the present disclosure, a passivation layer is provided on the side of the first connection conductor layer 27 facing away from the substrate 1, and a connection via hole is also provided on the passivation layer; a second connection conductor layer is provided on the side of the passivation layer facing away from the substrate 1. The second connection conductor layer can include a second source electrode and / or a second drain electrode, and the second source electrode and the second drain electrode are correspondingly connected to the source electrode and the drain electrode through the connection via hole on the passivation layer. Of course, a third connection conductor layer, a fourth connection conductor layer, etc. can also be provided as needed.

[0087] Please continue to refer to Figure 2 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, and connection vias are provided on the first planarization layer 28, and the connection vias are connected to the drain 272. The channel portion 231, the gate 251, the source 271, and the drain 272 form a thin film transistor.

[0088] It should be noted that the thin film transistor described in this specification is a top-gate thin film transistor. In other exemplary embodiments of the present disclosure, the thin film transistor may also be a bottom-gate type or a double-gate type, and the specific structure thereof will not be elaborated herein. Moreover, in the case of using a thin film transistor with opposite polarity or a change in the current direction during the operation of the circuit, etc., the functions of the "source 271" and the "drain 272" are sometimes interchanged. Therefore, in this specification, the "source 271" and the "drain 272" can be interchanged with each other.

[0089] Please continue to refer to Figure 2 As shown, a light-emitting substrate 3 is provided on the side of the first planarization layer 28 facing away from the substrate 1, and 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.

[0090] Specifically, a first electrode 31 is provided on the side of the first planarization layer 28 facing away from the substrate 1. The first electrode 31 is connected to the drain 272 of the driving backplane through a connection via, and a driving signal is provided to the first electrode 31 through the drain 272. The first electrode 31 may be an anode (pixel electrode).

[0091] A pixel definition layer 32 is provided on the side of the first electrode 31 facing away from the substrate 1. Referring to Figure 2 As shown, an opening 321 is provided on the pixel definition layer 32, and the opening 321 communicates with the first electrode 31, so that at least a part of the first electrode 31 is not covered by the pixel definition layer 32. The pixel definition layer 32 may be made of a black material that can absorb photons. For example, the material of the pixel definition layer 32 may be black ink; stray light can be absorbed through the pixel definition layer 32 to improve the display effect.

[0092] A light-emitting layer group 33 is provided on the side of the pixel definition layer 32 facing away from the substrate 1, and at least a part of the light-emitting layer group 33 is located in the opening 321. A second electrode 34 is provided 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 in one opening 321 emits light to form a sub-pixel 35, so that the orthographic projection of the sub-pixel 35 on the substrate 1 is the orthographic projection of the light-emitting layer group 33 in the opening 321 on the substrate 1.

[0093] It should be noted that since the side walls of the opening 321 of the pixel definition layer 32 are inclined, the sub-pixel 35 refers to the range of the bottom wall of the opening 321 of the pixel definition layer 32. That is to say, the sub-pixel 35 refers to the range defined by the edge of the opening 321 of the pixel definition layer 32 on the side close to the substrate 1.

[0094] 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 35R, a plurality of second sub-pixels 35G, and a plurality of third sub-pixels 35B. The first sub-pixel 35R may be a red sub-pixel, that is, the first sub-pixel 35R may emit red light. The second sub-pixel 35G may be a green sub-pixel, that is, the second sub-pixel 35G may emit green light. The third sub-pixel 35B may be a blue sub-pixel, that is, the third sub-pixel 35B 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-pixel may be a white sub-pixel, that is, the fourth sub-pixel may emit white light. It may also be that the first sub-pixel 35R, the second sub-pixel 35G, and the third sub-pixel 35B all emit white light, and then filtering is performed through a red filter layer, a green filter layer, and a blue filter layer later.

[0095] 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 that are sequentially stacked. The hole injection layer is in contact with the first electrode 31, and the electron injection layer is in contact with the second electrode 34. Of course, in some other exemplary embodiments of the present disclosure, the light-emitting layer group 33 may only include a hole transport layer, a light-emitting layer, and an electron transport layer. The light-emitting layer group 33 may also have other structures, and its specific structure may be set as needed.

[0096] Holes are injected into the organic light-emitting layer from the side of the first electrode 31, and electrons are injected into the organic light-emitting layer from the side of the second electrode 34. Eventually, 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.

[0097] The display backplane 10 may further include a packaging layer group 4 disposed on the side of the light-emitting substrate 3 facing away from the substrate substrate 1. For example, the packaging layer group 4 may include a first inorganic layer, an organic layer, and a second inorganic layer; the first inorganic layer is disposed on the side of the second electrode 34 facing away from the substrate substrate 1; the material of the first inorganic layer may be silicon nitride (SiNx) or silicon oxynitride (SiNO), etc., and the first inorganic layer may be formed on the side of the second electrode 34 facing away from the substrate substrate 1 by chemical vapor deposition (CVD). The organic layer is disposed on the side of the first inorganic layer facing away from the substrate substrate 1, and the material of the organic layer may be an organic material such as acrylic or epoxy. The second inorganic layer is disposed on the side of the organic layer facing away from the substrate substrate 1, and the material of the second inorganic layer may be silicon nitride (SiNx) or silicon oxynitride (SiNO), etc., and the second inorganic layer may be formed on the side of the organic layer facing away from the substrate substrate 1 by chemical vapor deposition (CVD). The light-emitting layer group 33 can be encapsulated by the packaging layer group 4 to isolate the corrosion of water / oxygen in the air.

[0098] In some exemplary embodiments of the present disclosure, with reference to Figure 2 As shown, the display backplane 10 may further include a touch layer group 5 disposed on the side of the packaging layer group 4 facing away from the substrate substrate 1, and the touch layer group 5 enables the display panel to implement a touch function.

[0099] The touch layer group 5 may include a base layer 51, a second touch function layer 52, a touch insulation layer 53, and a first touch function layer 54. The base layer 51 is disposed on the side of the packaging layer group 4 away from the substrate substrate 1, the second touch function layer 52 is disposed on the side of the base layer 51 away from the substrate substrate 1, the touch insulation layer 53 is disposed on the side of the second touch function layer 52 away from the substrate substrate 1, and the first touch function layer 54 is disposed on the side of the touch insulation layer 53 away from the substrate substrate 1. The touch layer group 5 may further include a protective layer 55 disposed on the side of the first touch function layer 54 away from the substrate substrate 1, and the protective layer 55 can protect the first touch function layer 54.

[0100] The first touch function layer 54 is arranged in a grid pattern, and one grid may correspond to one sub-pixel 35 to avoid the first touch function layer 54 blocking the forward light emission of each sub-pixel 35. With reference to Figure 1As shown, the first touch function layer 54 may include touch electrodes 542 and dummy portions 541, and the connection between the touch electrodes 542 and the dummy portions 541 may be disconnected by a disconnection line. The dummy portion 541 is provided with a via hole 5411, and the orthographic projection of the via hole 5411 on the display backplane 10 covers the first sub-pixel 35R. For example, the edge line of the orthographic projection of the via hole 5411 on the display backplane 10 may coincide with the edge line of the first sub-pixel 35R, or the area of the orthographic projection of the via hole 5411 on the display backplane 10 may be larger than the area of the first sub-pixel 35R. With such a setting, the dummy portion 541 is prevented from blocking the forward light emission of the first sub-pixel 35R.

[0101] Referring Figure 1 As shown, a light adjustment layer 6 is provided on the side of the first touch function layer 54 facing away from the display backplane 10. The light adjustment layer 6 is provided with a first recess 61, a second recess 62, and a third recess 63. The light adjustment layer 6 covers the touch electrodes 542, and the light adjustment layer 6 can replace the protective layer 55 to play a role in protecting the first touch function layer 54.

[0102] The first recesses 61 and the first sub-pixels 35R are in one-to-one correspondence. Specifically, the number of the first recesses 61 is the same as the number of the first sub-pixels 35R, and the shape of the first recesses 61 is the same as the shape of the first sub-pixels 35R. For example, when the first sub-pixel 35R is set to be circular, the first recess 61 is also set to be circular; when the first sub-pixel 35R is set to be rectangular, the first recess 61 is also set to be rectangular. Of course, in other exemplary embodiments of the present disclosure, the shape of the first sub-pixel 35R and the shape of the first recess 61 may also be other shapes, which will not be described one by one here.

[0103] The orthographic projection of the first recess 61 on the display backplane 10 overlaps at least partially with the first sub-pixel 35R. For example, the edge line of the orthographic projection of the first recess 61 on the display backplane 10 may coincide with the edge line of the first sub-pixel 35R, or the orthographic projection of the first recess 61 on the display backplane 10 may cover and be larger than the first sub-pixel 35R. Both of these situations make the orthographic projection of the first recess 61 on the display backplane 10 completely cover the first sub-pixel 35R.

[0104] Of course, in some other exemplary embodiments of the present disclosure, it may also be that a part of the orthographic projection of the first recess 61 on the display backplane 10 overlaps with a part of the first sub-pixel 35R.

[0105] The first recess 61 may include a sidewall and a bottom wall. The bottom wall is parallel to the display surface, and the sidewall intersects the display surface. It should be noted that since the sidewall of the first recess 61 is inclined, when compared with the first sub-pixel 35R, the range of the orthographic projection of the first recess 61 on the display backplane 10 refers to the orthographic projection of the side of the first recess 61 close to the display backplane 10 (the bottom wall) on the display backplane 10, that is, the orthographic projection of the bottom wall of the first recess 61 on the display backplane 10 at least partially overlaps with the first sub-pixel 35R; thus, it is ensured that when the orthographic projection of the first recess 61 on the display backplane 10 completely covers the first sub-pixel 35R, the sidewall of the first recess 61 does not overlap with the first sub-pixel 35R, further ensuring the light converging effect and the light uniformity.

[0106] The second recesses 62 and the second sub-pixels 35G are in one-to-one correspondence. Specifically, the number of the second recesses 62 is the same as the number of the second sub-pixels 35G, and the shape of the second recesses 62 is the same as the shape of the second sub-pixels 35G. For example, when the second sub-pixels 35G are set to be circular, the second recesses 62 are also set to be circular; when the second sub-pixels 35G are set to be rectangular, the second recesses 62 are also set to be rectangular; of course, in other exemplary embodiments of the present disclosure, the shapes of the second sub-pixels 35G and the second recesses 62 may also be other shapes, which will not be elaborated here one by one.

[0107] The orthographic projection of the second recess 62 on the display backplane 10 at least partially overlaps with the second sub-pixel 35G. For example, the edge line of the orthographic projection of the second recess 62 on the display backplane 10 may coincide with the edge line of the second sub-pixel 35G, or the orthographic projection of the second recess 62 on the display backplane 10 may cover and be larger than the second sub-pixel 35G. In both cases, the orthographic projection of the second recess 62 on the display backplane 10 completely covers the second sub-pixel 35G.

[0108] Of course, in some other exemplary embodiments of the present disclosure, it may also be that a part of the orthographic projection of the second recess 62 on the display backplane 10 overlaps with a part of the second sub-pixel 35G.

[0109] The second recess 62 may include a side wall and a bottom wall. The bottom wall is parallel to the display surface, and the side wall intersects the display surface. It should be noted that since the side wall of the second recess 62 is inclined, when compared with the second sub-pixel 35G, the range of the orthographic projection of the second recess 62 on the display backplane 10 refers to the orthographic projection of the side of the second recess 62 close to the display backplane 10 (the bottom wall) on the display backplane 10, that is, the orthographic projection of the bottom wall of the second recess 62 on the display backplane 10 overlaps at least partially with the second sub-pixel 35G; thus ensuring that when the orthographic projection of the second recess 62 on the display backplane 10 completely covers the second sub-pixel 35G, the side wall of the second recess 62 does not overlap with the second sub-pixel 35G, further ensuring the light converging effect and the uniformity of light.

[0110] The third recesses 63 and the third sub-pixels 35B are in one-to-one correspondence. Specifically, the number of the third recesses 63 is the same as the number of the third sub-pixels 35B, and the shape of the third recesses 63 is the same as the shape of the third sub-pixels 35B. For example, if the third sub-pixel 35B is set to be circular, the third recess 63 is also set to be circular; if the third sub-pixel 35B is set to be rectangular, the third recess 63 is also set to be rectangular; of course, in other exemplary embodiments of the present disclosure, the shape of the third sub-pixel 35B and the shape of the third recess 63 may also be other shapes, which will not be elaborated here one by one.

[0111] The orthographic projection of the third recess 63 on the display backplane 10 overlaps at least partially with the third sub-pixel 35B. For example, the edge line of the orthographic projection of the third recess 63 on the display backplane 10 may coincide with the edge line of the third sub-pixel 35B, or the orthographic projection of the third recess 63 on the display backplane 10 may cover and be larger than the third sub-pixel 35B. In both cases, the orthographic projection of the third recess 63 on the display backplane 10 completely covers the third sub-pixel 35B.

[0112] Of course, in some other exemplary embodiments of the present disclosure, it may also be that a part of the orthographic projection of the third recess 63 on the display backplane 10 overlaps with a part of the third sub-pixel 35B.

[0113] The third recessed portion 63 may include a side wall and a bottom wall. The bottom wall is parallel to the display surface, and the side wall intersects the display surface. It should be noted that since the side wall of the third recessed portion 63 is inclined, when compared with the third sub-pixel 35B, the range of the orthographic projection of the third recessed portion 63 on the display backplane 10 refers to the orthographic projection of the side (bottom wall) of the third recessed portion 63 close to the display backplane 10 on the display backplane 10, that is, the orthographic projection of the bottom wall of the third recessed portion 63 on the display backplane 10 at least partially overlaps with the third sub-pixel 35B; thus, it is ensured that when the orthographic projection of the third recessed portion 63 on the display backplane 10 completely covers the third sub-pixel 35B, the side wall of the third recessed portion 63 does not overlap with the third sub-pixel 35B, further ensuring the light converging effect and the uniformity of the light.

[0114] Referring to Figure 1 As shown, at least a part of the first light filtering layer 7R is located within the first recessed portion 61. For example, a part of the first light filtering layer 7R may be located within the first recessed portion 61, or the entire first light filtering layer 7R may be located within the first recessed portion 61. Generally, the thickness of the first light filtering layer 7R may be equal to the depth of the first recessed portion 61 to fill the first recessed portion 61. The first light filtering layer 7R may be a red light filtering layer, that is, the first light filtering layer 7R can only transmit red light.

[0115] The refractive index of the first light filtering layer 7R is greater than that of the light adjusting layer 6. Specifically, the refractive index of the first light filtering layer 7R is greater than or equal to 1.65 and less than or equal to 1.75. For example, the refractive index of the first light filtering layer 7R may be 1.68, 1.7, 1.73, etc. The refractive index of the light adjusting layer 6 is greater than or equal to 1.45 and less than or equal to 1.55. For example, the refractive index of the light adjusting layer 6 is 1.47, 1.5, 1.53, etc.

[0116] Referring to Figure 1 As shown, when light travels from the first light filtering layer 7R to the light adjusting layer 6, it is from an optically denser medium to an optically thinner medium. Therefore, total internal reflection easily occurs at the interface between the first light filtering layer 7R and the side wall of the first recessed portion 61. The side wall of the first recessed portion 61 causes the inclined outgoing light to undergo total internal reflection to form total internal reflection light, changing the angle of the outgoing light, so that the total internal reflection light is more convergent and exits from the front of the display panel, 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-peeking effect.

[0117] Moreover, in the case of strong ambient light, after the ambient light is filtered by the first light filtering layer 7R, only red light enters the display panel. After being reflected by the display panel, only red light exits the display panel, thus achieving the purpose of anti-glare.

[0118] At least a part of the second light filtering layer 7G is located within the second recess 62. For example, a part of the second light filtering layer 7G can be located within the second recess 62, or the entire second light filtering layer 7G can be located within the second recess 62. Generally, the thickness of the second light filtering layer 7G can be equal to the depth of the second recess 62 to fill the second recess 62. The second light filtering layer 7G can be a green light filtering layer, that is, the second light filtering layer 7G can only transmit green light.

[0119] The refractive index of the second light filtering layer 7G is greater than the refractive index of the light adjusting layer 6. Specifically, the refractive index of the second light filtering layer 7G is greater than or equal to 1.55 and less than or equal to 1.65. For example, the refractive index of the second light filtering layer 7G can be 1.58, 1.6, 1.62, etc.

[0120] Refer to Figure 1 As shown, when light travels from the second light filtering layer 7G to the light adjusting layer 6, it is from an optically denser medium to an optically less dense medium. Therefore, total internal reflection easily occurs at the interface between the second light filtering layer 7G and the side wall of the second recess 62. The side wall of the second recess 62 can cause the inclined outgoing light to undergo total internal reflection to form total internal reflection light, changing the angle of the outgoing light, so that the total internal reflection light is more convergent and exits from the front of the display panel, improving the light extraction efficiency of the front of the display panel and reducing the light extraction efficiency of the side of the display panel, increasing the anti-peeking effect.

[0121] Moreover, in the case of strong ambient light, after the ambient light is filtered by the second light filtering layer 7G, only green light enters the interior of the display panel. After being reflected by the display panel, only green light exits the display panel, thus achieving the purpose of anti-glare.

[0122] At least a part of the third light filtering layer 7B is located within the third recess 63. For example, a part of the third light filtering layer 7B can be located within the third recess 63, or the entire third light filtering layer 7B can be located within the third recess 63. Generally, the thickness of the third light filtering layer 7B can be equal to the depth of the third recess 63 to fill the third recess 63. The third light filtering layer 7B can be a blue light filtering layer, that is, the third light filtering layer 7B can only transmit blue light.

[0123] The refractive index of the third light filtering layer 7B is greater than the refractive index of the light adjusting layer 6. Specifically, the refractive index of the third light filtering layer 7B is greater than or equal to 1.55 and less than or equal to 1.65. For example, the refractive index of the third light filtering layer 7B can be 1.58, 1.6, 1.62, etc.

[0124] Refer to Figure 1As shown, when light rays travel from the third light filtering layer 7B to the light ray adjusting layer 6, it is from an optically denser medium to an optically less dense medium. Therefore, total internal reflection is likely to occur at the interface between the third light filtering layer 7B and the side wall of the third recess 63. The side wall of the third recess 63 causes the inclined outgoing light to undergo total internal reflection to form totally reflected light, changing the angle of the outgoing light, so that the totally reflected light is more convergent and exits from the front of the display panel, improving the light extraction efficiency at the front of the display panel, reducing the light extraction efficiency at the side of the display panel, and increasing the anti-peeking effect.

[0125] Moreover, in the case of strong ambient light, after the ambient light is filtered by the third light filtering layer 7B, only blue light rays enter the interior of the display panel. After being reflected by the display panel, only blue light rays exit the display panel, thus achieving the purpose of anti-glare.

[0126] However, since the refractive index of the second light filtering layer 7G is less than that of the first light filtering layer 7R, and the refractive index of the third light filtering layer 7B is less than that of the first light filtering layer 7R, the critical angle of total internal reflection at the interface between the first light filtering layer 7R and the light ray adjusting layer 6 is smaller, and more light rays undergo total internal reflection. While the critical angles of total internal reflection at the interfaces between the second light filtering layer 7G and the third light filtering layer 7B and the light ray adjusting layer 6 are larger, and fewer light rays undergo total internal reflection. As a result, the gains in the light extraction efficiencies of the sub-pixels 35 of different colors are different, leading to color shift.

[0127] In the present exemplary embodiment, referring to Figure 1 As shown, the dummy portion 541 at least extends to the side wall of the first recess 61. For example, the dummy portion 541 can extend to the side wall of the first recess 61 and be flush with the side wall of the first recess 61. With such a setting, a part of the side wall of the first recess 61 is occupied by the dummy portion 541 and cannot perform total internal reflection, thereby reducing the light rays that undergo total internal reflection at the interface between the first light filtering layer 7R and the light ray adjusting layer 6, and further reducing the light extraction efficiency of the first sub-pixel 35R, and can reduce or even avoid color shift caused by different gains in the light extraction efficiencies of the sub-pixels 35 of different colors.

[0128] Certainly, it can also be that the dummy portion 541 extends to the side wall of the first recess 61 and protrudes from the side wall of the first recess 61. With such a setting, a part of the side wall of the first recess 61 is occupied by the dummy portion 541 and cannot perform total internal reflection, thereby reducing the light rays that undergo total internal reflection at the interface between the first light filtering layer 7R and the light ray adjusting layer 6, and further reducing the light extraction efficiency of the first sub-pixel 35R, and can reduce or even avoid color shift caused by different gains in the light extraction efficiencies of the sub-pixels 35 of different colors; moreover, the dummy portion 541 can block the light rays emitted from the first sub-pixel 35R, further reducing the light extraction efficiency of the first sub-pixel 35R, and can reduce or even avoid color shift caused by different gains in the light extraction efficiencies of the sub-pixels 35 of different colors.

[0129] Specifically, referring to Figure 1 As shown, the distance D1 between the edge line of the orthographic projection of the via 5411 on the display backplane 10 and the edge line of the first sub-pixel 35R is greater than or equal to 0 and less than or equal to 1 micron. For example, the distance D1 between the edge line of the orthographic projection of the via 5411 on the display backplane 10 and the edge line of the first sub-pixel 35R 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.

[0130] If the distance D1 between the edge line of the orthographic projection of the via 5411 on the display backplane 10 and the edge line of the first sub-pixel 35R is too large, such that the dummy portion 541 cannot extend to the side wall of the first recess 61, that is, a part of the side wall of the first recess 61 cannot be occupied by the dummy portion 541, the light that undergoes total reflection at the interface between the first light filtering layer 7R and the light adjusting layer 6 cannot be reduced, and the light extraction efficiency of the first sub-pixel 35R cannot be lowered. The above numerical range enables a part of the side wall of the first recess 61 to be occupied by the dummy portion 541, preventing total reflection, thereby reducing the light that undergoes total reflection at the interface between the first light filtering layer 7R and the light adjusting layer 6, and further reducing the light extraction efficiency of the first sub-pixel 35R.

[0131] The dummy portion 541 extends at least to the side wall of the first recess 61. It can also be said that the orthographic projection of the via 5411 on the display backplane 10 is located within the orthographic projection of the first recess 61 on the display backplane 10. Specifically, the distance D2 between the edge line of the orthographic projection of the via 5411 on the display backplane 10 and the edge line of the orthographic projection of the first recess 61 on the display backplane 10 is greater than or equal to 0 and less than or equal to 2 microns. For example, the distance D2 between the edge line of the orthographic projection of the via 5411 on the display backplane 10 and the edge line of the orthographic projection of the first recess 61 on the display backplane 10 can be 0.3 micron, 0.5 micron, 0.8 micron, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc.

[0132] If the distance D2 between the edge line of the orthographic projection of the via 5411 on the display backplane 10 and the edge line of the orthographic projection of the first recess 61 on the display backplane 10 is too large, such that the size of the dummy portion 541 protruding from the side wall of the first recess 61 is too large, the dummy portion 541 is likely to block the first sub-pixel 35R, resulting in an excessive reduction in the light extraction efficiency of the first sub-pixel 35R. The above numerical range ensures that the dummy portion 541 does not block the first sub-pixel 35R, ensuring the light extraction efficiency of the first sub-pixel 35R in the forward direction.

[0133] In the present exemplary embodiment, the dummy portion 541 may be provided in a ring shape, and the ring width of the dummy portion 541 is greater than or equal to 3 microns and less than or equal to 4 microns. For example, the ring width of the dummy portion 541 may 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, and so on.

[0134] If the ring width of the dummy portion 541 is too large, the dummy portion 541 is likely to be electrically connected to the touch electrode 542, affecting the touch signal.

[0135] If the ring width of the dummy portion 541 is too small, it is difficult for the dummy portion 541 to extend to the side wall of the first recess 61, that is, a part of the side wall of the first recess 61 cannot be occupied by the dummy portion 541, and the light that undergoes total reflection at the interface between the first light filtering layer 7R and the light adjusting layer 6 cannot be reduced, and the light extraction efficiency of the first sub-pixel 35R cannot be lowered.

[0136] The above numerical range not only ensures that a part of the side wall of the first recess 61 is occupied by the dummy portion 541 and total reflection cannot occur, thereby reducing the light that undergoes total reflection at the interface between the first light filtering layer 7R and the light adjusting layer 6, and further lowering the light extraction efficiency of the first sub-pixel 35R; moreover, the dummy portion 541 is not electrically connected to the touch electrode 542 and does not affect the touch signal.

[0137] It should be noted that the dummy portion 541 may be a closed ring structure or a ring structure with a break. The break may be provided as one, or may be provided as two or more.

[0138] In the present exemplary embodiment, referring to Figure 1 As shown, the thickness of the light adjusting layer 6 is greater than or equal to 1.5 microns and less than or equal to 2.5 microns. For example, the thickness of the light adjusting layer 6 may 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.

[0139] The first recess 61 may be a through hole penetrating the light adjusting layer 6. In this case, the depth of the first recess 61 is equal to the thickness of the light adjusting layer 6, that is, the depth of the first recess 61 is greater than or equal to 1.5 microns and less than or equal to 2.5 microns.

[0140] Generally, the first light filtering layer 7R needs to at least fill the first recess 61. Therefore, the thickness of the first light filtering layer 7R is greater than or equal to the depth of the first recess 61.

[0141] The height of the sidewall of the first recess 61 in the second direction Y increases as the distance from the center of the first sub-pixel 35R in the first direction X increases, such that the first recess 61 forms a structure with an opening 321 larger than the bottom.

[0142] 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 surface of the display backplane 10 where the light modulation layer 6 is provided; 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 surface of the display backplane 10 where the light modulation layer 6 is provided.

[0143] In some exemplary embodiments of the present disclosure, referring to Figure 3 as shown, the sidewall of the first recess 61 may include a curved surface; the sidewall of the first recess 61 may include a first portion 611, a second portion 612, and a third portion 613 that are smoothly connected in sequence. The first portion 611 is closer to the display backplane 10 than the third portion 613. The second portion 612 is set as an inclined surface, the first portion 611 and the third portion 613 are set as arc surfaces, the first portion 611 may be set as a concave shape, and the third portion 613 may be set as a convex shape; specifically, the portion of the sidewall of the first recess 61 close to the display backplane 10 may be an arc surface, the middle portion of the sidewall of the first recess 61 may be set as an inclined surface, and the portion of the sidewall of the first recess 61 far from the display backplane 10 may be an arc surface. In some other exemplary embodiments of the present disclosure, the sidewall of the first recess 61 may be set as an inclined surface, and the sidewall of the first recess 61 may only include a first portion 611 and a third portion 613 that are smoothly connected, but generally speaking, the sidewall of the first recess 61 is inclined.

[0144] The angle β1 between the sidewall of the first recess 61 and the first reference plane is greater than or equal to 55° and less than or equal to 85°. For example, the angle β1 between the sidewall of the first recess 61 and the first reference plane may 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 where the light modulation layer 6 is provided.

[0145] If the angle β1 between the sidewall of the first recess 61 and the first reference plane is too large, such that the sidewall of the first recess 61 is almost perpendicular to the display backplane 10, when the first light filtering layer 7R is filled into the first recess 61, it cannot be filled into the corner of the bottom wall of the first recess 61. That is, voids are likely to be formed at the corner of the bottom wall of the first recess 61, and total reflection cannot be achieved well, losing the total reflection surface and thus unable to achieve a good converging effect on the outgoing light.

[0146] If the angle β1 between the side wall of the first recess 61 and the first reference plane is too small, making the side wall of the first recess 61 relatively gentle, most of the outgoing light rays emitted from the first sub-pixel 35R may have an angle greater than the angle between the side wall of the first recess 61 and the first reference plane, so that the outgoing light rays cannot reach the side wall of the first recess 61, and thus total reflection cannot be achieved, and the converging effect on the outgoing light rays cannot be realized.

[0147] The above numerical range can ensure total reflection of the light rays with a relatively large inclination angle emitted from the first sub-pixel 35R, thereby realizing the converging effect on the outgoing light rays.

[0148] The second recess 62 may be a through hole penetrating the light regulating layer 6. In this case, the depth of the second recess 62 is equal to the thickness of the light regulating layer 6, that is, the depth of the second recess 62 is greater than or equal to 1.5 micrometers and less than or equal to 2.5 micrometers.

[0149] Generally, the second filter layer 7G needs to at least fill the second recess 62. Therefore, the thickness of the second filter layer 7G is greater than or equal to the depth of the second recess 62.

[0150] The height of the side wall of the second recess 62 in the second direction Y increases as the distance from the center of the second sub-pixel 35G in the first direction X increases, so that the second recess 62 forms a structure with an opening 321 larger than the bottom.

[0151] In some exemplary embodiments of the present disclosure, referring to Figure 3 As shown, the side wall of the second recess 62 may include a curved surface; the side wall of the second recess 62 may include a fourth portion 621, a fifth portion 622, and a sixth portion 623 that are smoothly connected in sequence. The fourth portion 621 is closer to the display backplane 10 than the sixth portion 623. The fifth portion 622 is set as an inclined plane, and the fourth portion 621 and the sixth portion 623 are set as arc surfaces. The fourth portion 621 may be set as a concave shape, and the sixth portion 623 may be set as a convex shape; specifically, the portion of the side wall of the second recess 62 close to the display backplane 10 may be an arc surface, the middle portion of the side wall of the second recess 62 may be set as an inclined plane, and the portion of the side wall of the second recess 62 far from the display backplane 10 may be an arc surface. In some other exemplary embodiments of the present disclosure, the side wall of the second recess 62 may be set as an inclined plane, and the side wall of the second recess 62 may only include the fourth portion 621 and the sixth portion 623 that are smoothly connected, but generally speaking, the side wall of the second recess 62 is inclined.

[0152] The included angle β2 between the side wall of the second recess 62 and the first reference plane is greater than or equal to 55° and less than or equal to 85°. For example, the included angle β2 between the side wall of the second recess 62 and the first reference plane can be 55°, 57°, 60°, 63°, 65°, 68°, 70°, 72°, 75°, 77°, 80°, 82°, etc.

[0153] If the included angle β2 between the side wall of the second recess 62 and the first reference plane is too large, such that the side wall of the second recess 62 is almost perpendicular to the display backplane 10, when the second light filtering layer 7G is filled into the second recess 62, it cannot be filled to the corner of the bottom wall of the second recess 62. That is, voids are likely to be formed at the corner of the bottom wall of the second recess 62, and total internal reflection cannot be achieved well, resulting in the loss of the total internal reflection surface and thus the inability to achieve the converging effect on the emitted light well.

[0154] If the included angle β2 between the side wall of the second recess 62 and the first reference plane is too small, such that the side wall of the second recess 62 is relatively gentle, the angles of most of the emitted light rays emitted from the second sub-pixel 35G may be greater than the included angle between the side wall of the second recess 62 and the first reference plane, causing the emitted light rays to not be able to reach the side wall of the second recess 62, and thus total internal reflection cannot be achieved and the converging effect on the emitted light rays cannot be achieved.

[0155] The above numerical range can ensure that total internal reflection can be achieved for the light rays with a relatively large inclination angle emitted from the second sub-pixel 35G, thereby achieving the converging effect on the emitted light rays.

[0156] The third recess 63 can be a through-hole penetrating the light adjusting layer 6. In this case, the depth of the third recess 63 is equal to the thickness of the light adjusting layer 6, that is, the depth of the third recess 63 is greater than or equal to 1.5 micrometers and less than or equal to 2.5 micrometers.

[0157] Generally, the third light filtering layer 7B needs to at least fill the third recess 63. Therefore, the thickness of the third light filtering layer 7B is greater than or equal to the depth of the third recess 63.

[0158] The height of the side wall of the third recess 63 in the second direction Y increases as the distance from the center of the third sub-pixel 35B in the first direction X increases, such that the third recess 63 forms a structure with an opening 321 larger than the bottom.

[0159] In some exemplary embodiments of the present disclosure, refer to Figure 3As shown, the sidewall of the third recess 63 may include a curved surface; the sidewall of the third recess 63 may include a seventh portion 631, an eighth portion 632, and a ninth portion 633 that are smoothly connected in sequence. The seventh portion 631 is closer to the display backplane 10 than the ninth portion 633. The eighth portion 632 is set as an inclined plane, and the seventh portion 631 and the ninth portion 633 are set as arc surfaces. The seventh portion 631 may be set as a concave shape, and the ninth portion 633 may be set as a convex shape; specifically, the portion of the sidewall of the third recess 63 close to the display backplane 10 may be an arc surface, the middle portion of the sidewall of the third recess 63 may be set as an inclined plane, and the portion of the sidewall of the third recess 63 away from the display backplane 10 may be an arc surface. In some other exemplary embodiments of the present disclosure, the sidewall of the third recess 63 may be set as an inclined plane, and the sidewall of the third recess 63 may only include the seventh portion 631 and the ninth portion 633 that are smoothly connected, but generally speaking, the sidewall of the third recess 63 is inclined.

[0160] The included angle β3 between the sidewall of the third recess 63 and the first reference plane is greater than or equal to 55° and less than or equal to 85°. For example, the included angle β3 between the sidewall of the third recess 63 and the first reference plane may be 55°, 57°, 60°, 63°, 65°, 68°, 70°, 72°, 75°, 77°, 80°, 82°, and so on.

[0161] If the included angle β3 between the sidewall of the third recess 63 and the first reference plane is too large, such that the sidewall of the third recess 63 is almost perpendicular to the display backplane 10, when the third light filtering layer 7B is filled into the third recess 63, it cannot be filled to the corner of the bottom wall of the third recess 63. That is, voids are likely to be formed at the corner of the bottom wall of the third recess 63, and total internal reflection cannot be well achieved, losing the total internal reflection surface and thus unable to well achieve the converging effect on the outgoing light.

[0162] If the included angle β3 between the sidewall of the third recess 63 and the first reference plane is too small, such that the sidewall of the third recess 63 is relatively gentle, the angles of most of the outgoing light rays emitted from the third sub-pixel 35B may be greater than the included angle between the sidewall of the third recess 63 and the first reference plane, causing the outgoing light rays to not be able to reach the sidewall of the third recess 63, and thus total internal reflection cannot be achieved, and the converging effect on the outgoing light rays cannot be achieved.

[0163] The above numerical range can ensure that total internal reflection can be achieved for the light rays with a relatively large inclination angle emitted from the third sub-pixel 35B, thereby achieving the converging effect on the outgoing light rays.

[0164] Refer to Figure 4As shown, the light modulation layer 6 may further include a second islet 67 and a third islet 68. The second islet 67 is located within the second recess 62, such that the second recess 62 is arranged in a ring shape. The shape of the second islet 67 may be the same as the shape of the second sub-pixel 35G. For example, if the second sub-pixel 35G is arranged as a circle, the second islet 67 is also arranged as a circle; if the second sub-pixel 35G is arranged as a rectangle, the second islet 67 is also arranged as a rectangle. Of course, in other exemplary embodiments of the present disclosure, the shape of the second sub-pixel 35G and the shape of the second islet 67 may also be other shapes, which will not be elaborated one by one herein.

[0165] When light travels from the second color filter layer 7G to the light modulation layer 6, it travels from an optically denser medium to an optically less dense medium. Therefore, total internal reflection is likely to occur at the interface between the second color filter layer 7G and the sidewall of the second islet 67. The sidewall of the second islet 67 causes the obliquely emitted light to undergo total internal reflection to form totally internally reflected light, changing the angle of the emitted light, so that the totally internally reflected light is more convergent and exits from the front of the display panel, improving the light extraction efficiency of the front of the display panel. That is, the second islet 67 can increase the light participating in total internal reflection, thereby improving the light extraction efficiency of the second sub-pixel 35G and making up for the deficiency of the relatively low refractive index of the second color filter layer 7G.

[0166] The third islet 68 is located within the third recess 63, such that the third recess 63 is arranged in a ring shape. The shape of the third islet 68 may be the same as the shape of the third sub-pixel 35B. For example, if the third sub-pixel 35B is arranged as a circle, the third islet 68 is also arranged as a circle; if the third sub-pixel 35B is arranged as a rectangle, the third islet 68 is also arranged as a rectangle. Of course, in other exemplary embodiments of the present disclosure, the shape of the third sub-pixel 35B and the shape of the third islet 68 may also be other shapes, which will not be elaborated one by one herein.

[0167] When light travels from the third color filter layer 7B to the light modulation layer 6, it travels from an optically denser medium to an optically less dense medium. Therefore, total internal reflection is likely to occur at the interface between the third color filter layer 7B and the sidewall of the third islet 68. The sidewall of the third islet 68 causes the obliquely emitted light to undergo total internal reflection to form totally internally reflected light, changing the angle of the emitted light, so that the totally internally reflected light is more convergent and exits from the front of the display panel, improving the light extraction efficiency of the front of the display panel. That is, the third islet 68 can increase the light participating in total internal reflection, thereby improving the light extraction efficiency of the third sub-pixel 35B and making up for the deficiency of the relatively low refractive index of the third color filter layer 7B.

[0168] The height of the sidewall of the second islet 67 in the second direction Y increases as the distance from the center of the second sub-pixel 35G in the first direction X increases, such that the second islet 67 forms a structure with an opening 321 larger than the bottom.

[0169] In some exemplary embodiments of the present disclosure, refer to Figure 5As shown, the side wall of the second isolated island 67 may include a curved surface; the side wall of the second isolated island 67 may include a first section 671, a second section 672, and a third section 673 that are smoothly connected in sequence. The first section 671 is closer to the display backplane 10 than the third section 673. The second section 672 is set as an inclined plane, and the first section 671 and the third section 673 are set as arc surfaces. The first section 671 may be set in a concave shape, and the third section 673 may be set in a protruding shape; specifically, the part of the side wall of the second isolated island 67 close to the display backplane 10 may be an arc surface, the middle part of the side wall of the second isolated island 67 may be set as an inclined plane, and the part of the side wall of the second isolated island 67 far from the display backplane 10 may be an arc surface. In some other exemplary embodiments of the present disclosure, the side wall of the second isolated island 67 may be set as an inclined plane, and the side wall of the second isolated island 67 may only include the first section 671 and the third section 673 that are smoothly connected, but generally speaking, the side wall of the second isolated island 67 is inclined.

[0170] The included angle β4 between the side wall of the second isolated island 67 and the first reference plane is greater than or equal to 55° and less than or equal to 85°. For example, the included angle β4 between the side wall of the second isolated island 67 and the first reference plane may be 55°, 57°, 60°, 63°, 65°, 68°, 70°, 72°, 75°, 77°, 80°, 82°, etc.

[0171] If the included angle β4 between the side wall of the second isolated island 67 and the first reference plane is too large, such that the side wall of the second isolated island 67 is almost perpendicular to the display backplane 10, when the second light filtering layer 7G is filled into the second recess 62, it cannot be filled into the corner of the bottom wall of the second recess 62, that is, voids are likely to be formed at the corners at the bottom of the second isolated island 67, and total internal reflection cannot be achieved well, losing the total internal reflection surface and thus unable to achieve the converging effect on the outgoing light well.

[0172] If the included angle β4 between the side wall of the second isolated island 67 and the first reference plane is too small, such that the side wall of the second isolated island 67 is relatively gentle, the angles of most of the outgoing light rays emitted from the second sub-pixel 35G may be greater than the included angle between the side wall of the second isolated island 67 and the first reference plane, so that the outgoing light rays cannot hit the side wall of the second isolated island 67, and thus total internal reflection cannot be achieved, and the converging effect on the outgoing light rays cannot be achieved.

[0173] The above numerical range can ensure that total internal reflection can be achieved for the light rays with a relatively large inclination angle emitted from the second sub-pixel 35G, thereby achieving the converging effect on the outgoing light rays.

[0174] The height of the side wall of the third isolated island 68 in the second direction Y increases as the distance from the center of the third sub-pixel 35B in the first direction X increases, such that the third isolated island 68 forms a structure with an opening 321 larger than the bottom.

[0175] In some exemplary embodiments of the present disclosure, with reference to Figure 5 as shown, the side wall of the third isolated island 68 may include a curved surface; the side wall of the third isolated island 68 may include a fourth section 681, a fifth section 682, and a sixth section 683 that are smoothly connected in sequence. The fourth section 681 is closer to the display backplane 10 than the sixth section 683. The fifth section 682 is set as an inclined plane, the fourth section 681 and the sixth section 683 are set as arc surfaces. The fourth section 681 may be set as a concave shape, and the sixth section 683 may be set as a convex shape; specifically, the part of the side wall of the third isolated island 68 close to the display backplane 10 may be an arc surface, the middle part of the side wall of the third isolated island 68 may be set as an inclined plane, and the part of the side wall of the third isolated island 68 away from the display backplane 10 may be an arc surface. In some other exemplary embodiments of the present disclosure, the side wall of the third isolated island 68 may be set as an inclined plane, and the side wall of the third isolated island 68 may only include the fourth section 681 and the sixth section 683 that are smoothly connected, but generally speaking, the side wall of the third isolated island 68 is inclined.

[0176] The included angle β5 between the side wall of the third isolated island 68 and the first reference plane is greater than or equal to 55° and less than or equal to 85°. For example, the included angle β5 between the side wall of the third isolated island 68 and the first reference plane may 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 where the light adjusting layer 6 is provided.

[0177] If the included angle β5 between the side wall of the third isolated island 68 and the first reference plane is too large, such that the side wall of the third isolated island 68 is almost perpendicular to the display backplane 10, when the third light filtering layer 7B is filled into the third recess 63, it cannot be filled to the corner of the bottom wall of the third recess 63, that is, voids are likely to be formed at the corners at the bottom of the third isolated island 68, and total internal reflection cannot be achieved well, losing the total internal reflection surface and thus unable to achieve the converging effect on the outgoing light well.

[0178] If the included angle β5 between the side wall of the third isolated island 68 and the first reference plane is too small, such that the side wall of the third isolated island 68 is relatively gentle, most of the outgoing light rays emitted from the third sub-pixel 35B may have an angle greater than the included angle between the side wall of the third isolated island 68 and the first reference plane, so that the outgoing light rays cannot hit the side wall of the third isolated island 68, and thus total internal reflection cannot be achieved and the converging effect on the outgoing light rays cannot be achieved.

[0179] The above numerical range can ensure that total internal reflection can be achieved for the light rays with a relatively large inclination angle emitted from the third sub-pixel 35B, thereby achieving the converging effect on the outgoing light rays.

[0180] The ratio of the area of the orthographic projection of the second island 67 on the display backplane 10 to the area of the orthographic projection of the second recess 62 on the display backplane 10 is greater than or equal to 3% and less than or equal to 40%. For example, the ratio of the area of the orthographic projection of the second island 67 on the display backplane 10 to the area of the orthographic projection of the second recess 62 on the display backplane 10 can be 5%, 8%, 10%, 12%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 32%, 35%, 37%, etc.

[0181] If the ratio of the area of the orthographic projection of the second island 67 on the display backplane 10 to the area of the orthographic projection of the second recess 62 on the display backplane 10 is too large, the occupied area of the second recess 62 by the second island 67 is too large, resulting in too large an area of the part with a relatively thin thickness of the second light - filtering layer 7G, which affects the light - emitting purity of the second sub - pixel 35G.

[0182] If the ratio of the area of the orthographic projection of the second island 67 on the display backplane 10 to the area of the orthographic projection of the second recess 62 on the display backplane 10 is too small, it is difficult to form the second island 67 within the above - mentioned numerical range.

[0183] The above - mentioned numerical range not only ensures the light - emitting purity of the second sub - pixel 35G, but also ensures that it is easy to form the second island 67 within the above - mentioned numerical range.

[0184] The ratio of the area of the orthographic projection of the third island 68 on the display backplane 10 to the area of the orthographic projection of the third recess 63 on the display backplane 10 is greater than or equal to 3% and less than or equal to 40%. For example, the ratio of the area of the orthographic projection of the third island 68 on the display backplane 10 to the area of the orthographic projection of the third recess 63 on the display backplane 10 can be 5%, 8%, 10%, 12%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 32%, 35%, 37%, etc.

[0185] If the ratio of the area of the orthographic projection of the third island 68 on the display backplane 10 to the area of the orthographic projection of the third recess 63 on the display backplane 10 is too large, the occupied area of the third recess 63 by the third island 68 is too large, resulting in too large an area of the part with a relatively thin thickness of the third light - filtering layer 7B, which affects the light - emitting purity of the third sub - pixel 35B.

[0186] If the ratio of the area of the orthographic projection of the third island 68 on the display backplane 10 to the area of the orthographic projection of the third recess 63 on the display backplane 10 is too small, it is difficult to form the third island 68 within the above - mentioned numerical range.

[0187] The above - mentioned numerical range not only ensures the light - emitting purity of the third sub - pixel 35B, but also ensures that it is easy to form the third island 68 within the above - mentioned numerical range.

[0188] Specifically, the maximum dimension of the orthographic projection of the second isolated island 67 on the display backplane 10 is greater than or equal to 3 μm and less than or equal to 5 μm. For example, the maximum dimension of the orthographic projection of the second isolated island 67 on the display backplane 10 can be 3.2 μm, 3.5 μm, 3.7 μm, 4 μm, 4.3 μm, 4.5 μm, 4.8 μm, and so on.

[0189] The maximum dimension of the orthographic projection of the third isolated island 68 on the display backplane 10 is greater than or equal to 3 μm and less than or equal to 5 μm. For example, the maximum dimension of the orthographic projection of the third isolated island 68 on the display backplane 10 can be 3.2 μm, 3.5 μm, 3.7 μm, 4 μm, 4.3 μm, 4.5 μm, 4.8 μm, and so on.

[0190] Refer to Figure 6 As shown, in some exemplary embodiments of the present disclosure, the first recess 61 may be a blind hole provided in the light modulation layer 6, that is, the light modulation layer 6 is further provided at the bottom of the first recess 61, but the thickness of the light modulation layer 6 at the first recess 61 is less than the thickness of other parts; the second recess 62 and the third recess 63 may be through holes provided in the light modulation layer 6.

[0191] With such a setting, the depth of the first recess 61 is less than the depth of the second recess 62, and the depth of the first recess 61 is less than the depth of the third recess 63, so that the width of the side wall of the first recess 61 is less than the width of the side wall of the second recess 62, and the width of the side wall of the first recess 61 is less than the width of the side wall of the third recess 63. Furthermore, the interface for total reflection generated in the first recess 61 is reduced, and the light extraction efficiency of the first sub-pixel 35R is reduced, which can reduce or even avoid color shift caused by different gains in the light extraction efficiency of sub-pixels 35 of different colors.

[0192] The thickness of the light modulation layer 6 at the first recess 61 is greater than or equal to 0.5 μm and less than or equal to 1 μm, that is, the thickness of the light modulation layer 6 at the bottom of the blind hole is greater than or equal to 0.5 μm and less than or equal to 1 μm. For example, the thickness of the light modulation layer 6 at the first recess 61 can be 0.55 μm, 0.6 μm, 0.65 μm, 0.7 μm, 0.75 μm, 0.8 μm, 0.85 μm, 0.9 μm, 0.95 μm, and so on.

[0193] If the thickness of the light modulation layer 6 at the first recess 61 is too large, the depth of the first recess 61 is too small, resulting in too small an interface for total reflection generated in the first recess 61, excessively reducing the light extraction efficiency of the first sub-pixel 35R, and also causing color shift caused by different gains in the light extraction efficiency of sub-pixels 35 of different colors.

[0194] Conversely, if the thickness of the light regulating layer 6 at the first recess 61 is too small, causing the depth of the first recess 61 to be too large, resulting in an overly large interface for total reflection in the first recess 61, it has little effect on reducing the light extraction efficiency of the first sub-pixel 35R, and thus has little effect on reducing or even avoiding color shift caused by different gains in the light extraction efficiencies of sub-pixels 35 of different colors.

[0195] The above numerical range ensures the reduction or even avoidance of color shift caused by different gains in the light extraction efficiencies of sub-pixels 35 of different colors.

[0196] In addition, the thickness of the light regulating layer 6 at the first recess 61 may also be equal to the thickness of the dummy portion 541, or the thickness of the light regulating layer 6 at the first recess 61 may also be less than the thickness of the dummy portion 541.

[0197] Refer to Figure 1 、 Figure 4 and Figure 6 As shown in

[0198] and

[0199] In some exemplary embodiments of the present disclosure, the display panel may further include a light shielding layer 8 and a second planarization layer 9. The light shielding layer 8 is disposed on the side of the light regulating layer 6 facing away from the display backplane 10, and the light shielding layer 8 does not cover the sidewalls of the first recess 61, the second recess 62, and the third recess 63, that is, the light shielding layer 8 is disposed on the top surface of the light regulating layer 6 facing away from the display backplane 10 to avoid the light shielding layer 8 affecting the light extraction efficiency of each sub-pixel 35. First vias 81, second vias 82, and third vias 83 are provided on the light shielding layer 8; the orthographic projection of the first via 81 on the display backplane 10 covers the first sub-pixel 35R, and the area of the orthographic projection of the first via 81 on the display backplane 10 is larger than the area of the first sub-pixel 35R; the orthographic projection of the second via 82 on the display backplane 10 covers the second sub-pixel 35G, and the area of the orthographic projection of the second via 82 on the display backplane 10 is larger than the area of the second sub-pixel 35G; the orthographic projection of the third via 83 on the display backplane 10 covers the third sub-pixel 35B, and the area of the orthographic projection of the third via 83 on the display backplane 10 is larger than the area of the third sub-pixel 35B. With such a setting, the light shielding layer 8 is prevented from blocking the forward light extraction efficiency of the first sub-pixel 35R, the second sub-pixel 35G, and the third sub-pixel 35B.

[0198] The second planarization layer 9 is disposed on the side of the light shielding layer 8 away from the display backplane 10. The display panel can be protected and planarized through the second planarization layer 9, which is beneficial for subsequent bonding with the cover plate. The material of the second planarization layer 9 can be resin, and the refractive index of the second planarization layer 9 can be less than the refractive index of the third light filtering layer 7B.

[0199] The thickness of the light shielding layer 8 is greater than or equal to 1 μm and less than or equal to 2 μm. For example, the thickness of the light shielding layer 8 can be 1.2 μm, 1.4 μm, 1.5 μm, 1.6 μm, 1.8 μm, etc.

[0200] Referring to Figure 1 、 Figure 4 and Figure 6 as shown, the first via 81, the second via 82 and the third via 83 are arranged at intervals; the first color filter layer 7R is located in the first via 81, the second color filter layer 7G is located in the second via 82, and the third color filter layer 7B is located in the third via 83.

[0201] The distance between the pore wall of the first via 81 and the first color filter layer 7R is greater than or equal to 0 and less than or equal to 2 microns. For example, the distance between the pore wall of the first via 81 and the first color filter layer 7R can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.4 microns, 1.5 microns, 1.6 microns, 1.8 microns, etc. The distance between the pore wall of the second via 82 and the second color filter layer 7G is greater than or equal to 0 and less than or equal to 2 microns. For example, the distance between the pore wall of the second via 82 and the second color filter layer 7G can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.4 microns, 1.5 microns, 1.6 microns, 1.8 microns, etc. The distance between the pore wall of the third via 83 and the third color filter layer 7B is greater than or equal to 0 and less than or equal to 2 microns. For example, the distance between the pore wall of the third via 83 and the third color filter layer 7B can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.4 microns, 1.5 microns, 1.6 microns, 1.8 microns, etc.

[0202] If the distance between the pore wall of the first via 81 and the first color filter layer 7R is too large, the distance between the pore wall of the second via 82 and the second color filter layer 7G is too large, and the distance between the pore wall of the third via 83 and the third color filter layer 7B is too large, it will cause the area of the light-shielding layer 8 to be too small, affecting the light-shielding effect. The above numerical range can ensure the light-shielding effect of the light-shielding layer 8.

[0203] During the preparation process, the light-shielding layer 8 can be prepared first, and then the first color filter layer 7R, the second color filter layer 7G and the third color filter layer 7B can be prepared.

[0204] Moreover, a part of the first light filtering layer 7R, the second light filtering layer 7G, and the third light filtering layer 7B extends to the side of the light regulating layer 6 away from the display backplane 10 without overlapping; that is, the first light filtering layer 7R is not only disposed within the first recess 61, but also on the side of the light regulating layer 6 around the first recess 61 away from the display backplane 10; the second light filtering layer 7G is not only disposed within the second recess 62, but also on the side of the light regulating layer 6 around the second recess 62 away from the display backplane 10; the third light filtering layer 7B is not only disposed within the third recess 63, but also on the side of the light regulating layer 6 around the third recess 63 away from the display backplane 10.

[0205] With such a setting, it is ensured that the first light filtering layer 7R fills the first recess 61, the second light filtering layer 7G fills the second recess 62, and the third light filtering layer 7B fills the third recess 63, so as to ensure the light filtering effect and the color gamut of the display panel.

[0206] Specifically, the ring width of the overlapping part of the first light filtering layer 7R and the light regulating layer 6 is greater than or equal to 0 and less than or equal to 2 micrometers. For example, the ring width of the overlapping part of the first light filtering layer 7R and the light regulating layer 6 can be 0.3 micrometers, 0.5 micrometers, 0.8 micrometers, 1 micrometer, 1.2 micrometers, 1.5 micrometers, 1.7 micrometers, etc.

[0207] The ring width of the overlapping part of the second light filtering layer 7G and the light regulating layer 6 is greater than or equal to 0 and less than or equal to 2 micrometers. For example, the ring width of the overlapping part of the second light filtering layer 7G and the light regulating layer 6 can be 0.3 micrometers, 0.5 micrometers, 0.8 micrometers, 1 micrometer, 1.2 micrometers, 1.5 micrometers, 1.7 micrometers, etc.

[0208] The ring width of the overlapping part of the third light filtering layer 7B and the light regulating layer 6 is greater than or equal to 0 and less than or equal to 2 micrometers. For example, the ring width of the overlapping part of the third light filtering layer 7B and the light regulating layer 6 can be 0.3 micrometers, 0.5 micrometers, 0.8 micrometers, 1 micrometer, 1.2 micrometers, 1.5 micrometers, 1.7 micrometers, etc.

[0209] The setting of the light shielding layer 8 is not limited to the above description. For example, referring to Figures 7 - 12As shown, in some exemplary embodiments of the present disclosure, a fourth recess 64, a fifth recess 65, and a sixth recess 66 are provided on the light adjustment layer 6. The fourth recess 64, the fifth recess 65, and the sixth recess 66 are all arranged in a ring shape. The fourth recess 64 surrounds the first recess 61, the fifth recess 65 surrounds the second recess 62, and the sixth recess 66 surrounds the third recess 63. The fourth recess 64, the fifth recess 65, and the sixth recess 66 may be annular through holes provided on the light adjustment layer 6, or may be annular blind holes provided on the light adjustment layer 6.

[0210] Moreover, referring to Figures 7 - 9 As shown, the light-shielding layer 8 is also provided in the fourth recess 64, the fifth recess 65, and the sixth recess 66. Specifically, the light-shielding layer 8 is not only provided on the side of the light adjustment layer 6 facing away from the display backplane 10 between the fourth recess 64 and the fifth recess 65, but also the light-shielding layer 8 extends into the fourth recess 64 and the fifth recess 65; the light-shielding layer 8 is not only provided on the side of the light adjustment layer 6 facing away from the display backplane 10 between the fifth recess 65 and the sixth recess 66, but also the light-shielding layer 8 extends into the fifth recess 65 and the sixth recess 66; the light-shielding layer 8 is not only provided on the side of the light adjustment layer 6 facing away from the display backplane 10 between the fourth recess 64 and the sixth recess 66, but also the light-shielding layer 8 extends into the fourth recess 64 and the sixth recess 66.

[0211] In addition, referring to Figures 10 - 12 As shown, the light-shielding layer 8 is also provided in the fourth recess 64, the fifth recess 65, and the sixth recess 66, and the first light-filtering layer 7R is also provided in the fourth recess 64, the second light-filtering layer 7G is also provided in the fifth recess 65, and the third light-filtering layer 7B is also provided in the sixth recess 66. Specifically, the light-shielding layer 8 is not only provided on the side of the light adjustment layer 6 facing away from the display backplane 10 between the fourth recess 64 and the fifth recess 65, between the fifth recess 65 and the sixth recess 66, and between the fourth recess 64 and the sixth recess 66; but also the light-shielding layer 8 extends into the fourth recess 64, the fifth recess 65, and the sixth recess 66. Moreover, the first light-filtering layer 7R also extends into the fourth recess 64, the second light-filtering layer 7G also extends into the fifth recess 65, and the third light-filtering layer 7B also extends into the sixth recess 66.

[0212] With such a setting, the height of the part of the light-shielding layer 8 close to the first light-filtering layer 7R, the second light-filtering layer 7G, and the third light-filtering layer 7B is relatively low, avoiding the light-shielding layer 8 from blocking the emission of light with a relatively large tilt angle, that is, enabling the light with a relatively large tilt angle to be emitted, thereby reducing the brightness attenuation of the side viewing angle and increasing the viewable angle range of the display panel.

[0213] Referring to Figures 13 - 15 As shown, in some exemplary embodiments of the present disclosure, a part of the first color filter layer 7R, the second color filter layer 7G, and the third color filter layer 7B extends to the side of the light modulation layer 6 away from the display backplane 10 and does not overlap. For example, the first color filter layer 7R, the second color filter layer 7G, and the third color filter layer 7B may extend to the side of the light modulation layer 6 away from the display backplane 10, but there is a gap between the adjacent first color filter layer 7R and the second color filter layer 7G or the first color filter layer 7R and the second color filter layer 7G are just connected, and there is a gap between the adjacent second color filter layer 7G and the third color filter layer 7B or the second color filter layer 7G and the third color filter layer 7B are just connected.

[0214] In this case, the light shielding layer 8 is disposed at least on the side of the first color filter layer 7R, the second color filter layer 7G, and the third color filter layer 7B away from the display backplane 10. For example, when there is a gap between the adjacent first color filter layer 7R and the second color filter layer 7G, a part of the light shielding layer 8 is disposed in the gap such that this part of the light shielding layer 8 is located on the side of the light modulation layer 6 away from the display backplane 10, and another part of the light shielding layer 8 is disposed on the sides of the first color filter layer 7R and the second color filter layer 7G away from the display backplane 10; when the adjacent first color filter layer 7R and the second color filter layer 7G are just connected, the light shielding layer 8 is disposed on the sides of the first color filter layer 7R and the second color filter layer 7G away from the display backplane 10. Similarly, when there is a gap between the adjacent second color filter layer 7G and the third color filter layer 7B, a part of the light shielding layer 8 is disposed in the gap such that this part of the light shielding layer 8 is located on the side of the light modulation layer 6 away from the display backplane 10, and another part of the light shielding layer 8 is disposed on the sides of the second color filter layer 7G and the third color filter layer 7B away from the display backplane 10; when the adjacent second color filter layer 7G and the third color filter layer 7B are just connected, the light shielding layer 8 is disposed on the sides of the second color filter layer 7G and the third color filter layer 7B away from the display backplane 10. When there is a gap between the adjacent first color filter layer 7R and the third color filter layer 7B, a part of the light shielding layer 8 is disposed in the gap such that this part of the light shielding layer 8 is located on the side of the light modulation layer 6 away from the display backplane 10, and another part of the light shielding layer 8 is disposed on the sides of the first color filter layer 7R and the third color filter layer 7B away from the display backplane 10; when the adjacent first color filter layer 7R and the third color filter layer 7B are just connected, the light shielding layer 8 is disposed on the sides of the first color filter layer 7R and the third color filter layer 7B away from the display backplane 10.

[0215] During the manufacturing process, the first color filter layer 7R, the second color filter layer 7G, and the third color filter layer 7B can be prepared first, and then the light shielding layer 8 can be prepared. In this case, the process precision requirements for the first color filter layer 7R, the second color filter layer 7G, and the third color filter layer 7B can be reduced, thereby reducing costs and improving efficiency.

[0216] Referring to Figures 16 - 18 As shown, in some exemplary embodiments of the present disclosure, the light-shielding layer 8 is disposed on the side of the light-adjusting layer 6 away from the display backplane 10, and the light-shielding layer 8 does not cover the side walls of the first recess 61, the second recess 62, and the third recess 63, that is, the light-shielding layer 8 is disposed on the top surface of the light-adjusting layer 6 away from the display backplane 10, so as to avoid the light-shielding layer 8 affecting the light-emitting efficiency of each sub-pixel 35.

[0217] Specifically, the distance between the edge line of the orthographic projection of the first via 81 on the display backplane 10 and the edge line of the orthographic projection of the first recess 61 on the display backplane 10 is greater than or equal to 1 μm and less than or equal to 3 μm. For example, the distance between the edge line of the orthographic projection of the first via 81 on the display backplane 10 and the edge line of the orthographic projection of the first recess 61 on the display backplane 10 can be 1.2 μm, 1.5 μm, 1.7 μm, 2 μm, 2.3 μm, 2.5 μm, 2.8 μm, etc.

[0218] The distance between the edge line of the orthographic projection of the second via 82 on the display backplane 10 and the edge line of the orthographic projection of the second recess 62 on the display backplane 10 is greater than or equal to 1 μm and less than or equal to 3 μm. For example, the distance between the edge line of the orthographic projection of the second via 82 on the display backplane 10 and the edge line of the orthographic projection of the second recess 62 on the display backplane 10 can be 1.2 μm, 1.5 μm, 1.7 μm, 2 μm, 2.3 μm, 2.5 μm, 2.8 μm, etc.

[0219] The distance between the edge line of the orthographic projection of the third via 83 on the display backplane 10 and the edge line of the orthographic projection of the third recess 63 on the display backplane 10 is greater than or equal to 1 μm and less than or equal to 3 μm. For example, the distance between the edge line of the orthographic projection of the third via 83 on the display backplane 10 and the edge line of the orthographic projection of the third recess 63 on the display backplane 10 can be 1.2 μm, 1.5 μm, 1.7 μm, 2 μm, 2.3 μm, 2.5 μm, 2.8 μm, etc.

[0220] It should be noted that here, the edge line of the orthographic projection of the first recess 61 on the display backplane 10 refers to the edge line of the orthographic projection of the side of the first recess 61 close to the light-shielding layer 8 on the display backplane 10, the edge line of the orthographic projection of the second recess 62 on the display backplane 10 refers to the edge line of the orthographic projection of the side of the second recess 62 close to the light-shielding layer 8 on the display backplane 10, and the edge line of the orthographic projection of the third recess 63 on the display backplane 10 refers to the edge line of the orthographic projection of the side of the third recess 63 close to the light-shielding layer 8 on the display backplane 10.

[0221] In this case, a part of the first color filter layer 7R, the second color filter layer 7G, and the third color filter layer 7B extends to the side of the light-shielding layer 8 facing away from the display backplane 10.

[0222] During the manufacturing process, the light-shielding layer 8 can be fabricated first, and then the first color filter layer 7R, the second color filter layer 7G, and the third color filter layer 7B can be fabricated. In this case, the required process precision for the first color filter layer 7R, the second color filter layer 7G, and the third color filter layer 7B can be reduced, thereby reducing costs and improving efficiency.

[0223] Referring to Figure 19 As shown, in some exemplary embodiments of the present disclosure, the thickness of the first color filter layer 7R is greater than the thickness of the second color filter layer 7G, and the thickness of the first color filter layer 7R is greater than the thickness of the third color filter layer 7B.

[0224] Specifically, the difference between the thickness of the first color filter layer 7R and the thickness of the second color filter layer 7G is greater than or equal to 0.2 μm and less than or equal to 0.5 μm. For example, the difference between the thickness of the first color filter layer 7R and the thickness of the second color filter layer 7G can be 0.23 μm, 0.25 μm, 0.28 μm, 0.3 μm, 0.32 μm, 0.35 μm, 0.37 μm, 0.4 μm, 0.43 μm, 0.45 μm, 0.48 μm, and so on.

[0225] The difference between the thickness of the first color filter layer 7R and the thickness of the third color filter layer 7B is greater than or equal to 0.2 μm and less than or equal to 0.5 μm. For example, the difference between the thickness of the first color filter layer 7R and the thickness of the third color filter layer 7B can be 0.23 μm, 0.25 μm, 0.28 μm, 0.3 μm, 0.32 μm, 0.35 μm, 0.37 μm, 0.4 μm, 0.43 μm, 0.45 μm, 0.48 μm, and so on.

[0226] With such a setting, the light extraction efficiency of the first sub-pixel 35R can be reduced, and color deviation caused by different gains in the light extraction efficiency of sub-pixels 35 of different colors can be reduced or even avoided.

[0227] Based on the same inventive concept, the exemplary embodiments of the present disclosure provide a display device, which may include the display panel described in any one of the above. The specific structure of the display panel has been described in detail above, and therefore, it will not be elaborated here.

[0228] The specific type of the display device is not particularly limited, and any common display device type in the art can be used. Specifically, for example, mobile devices such as mobile phones, wearable devices such as watches, VR devices, etc. Those skilled in the art can make corresponding selections according to the specific use of the display device, which will not be elaborated here.

[0229] It should be noted that, in addition to the display panel, the display device further includes other necessary components and compositions. Taking a display as an example, specifically, such as a housing, a circuit board, a power cord, etc. Those skilled in the art can make corresponding supplements according to the specific usage requirements of the display device, which will not be elaborated here.

[0230] 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 those of the display panel provided by the above exemplary embodiment, and will not be elaborated here.

[0231] After considering the specification and practicing the disclosed invention herein, those skilled in the art will readily conceive of other embodiments of the present disclosure. This application is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include known common knowledge or conventional technical means in the technical field not disclosed herein. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out 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 is provided on the light-emitting side of the display backplane, the touch layer group includes a first touch function layer, the first touch function layer includes a dummy portion, the dummy portion is provided with a via hole, and the orthographic projection of the via hole on the display backplane covers the first sub-pixel; a light adjustment layer, arranged on a side of the first touch function layer away from the display backplane, the light adjustment layer being provided with a first recessed portion and a second recessed portion, the orthographic projection of the first recessed portion on the display backplane at least partially overlapping with the first sub-pixel, the orthographic projection of the second recessed portion on the display backplane at least partially overlapping with the second sub-pixel; the dummy portion at least extending to a side wall of the first recessed portion; a first filter layer, at least a portion of which is located in the first recessed portion, and a refractive index of the first filter layer is greater than a refractive index of the light adjustment layer; A second filter layer, at least a portion of which is located in the second recessed portion, a refractive index of the second filter layer is greater than a refractive index of the light adjustment layer, and a refractive index of the second filter layer is less than a refractive index of the first filter layer.

2. The display panel according to claim 1, characterized in that: 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 micrometer.

3. The display panel according to claim 1, characterized in that: A distance between an edge line of an orthographic projection of the via hole on the display backplane and an edge line of an 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 micrometers.

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

5. The display panel according to claim 1, characterized in that: A third recessed portion is further provided on the light adjustment layer, and the orthographic projection of the third recessed portion on the display backplane at least partially overlaps with the third sub-pixel. The display panel further includes: A third filter layer, at least part of which is located in the third recessed portion, the refractive index of the third filter layer is greater than the refractive index of the light adjustment layer, and the refractive index of the third filter layer is less than the refractive index of the first filter layer.

6. The display panel according to claim 5, characterized in that: 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.

7. The display panel according to claim 5, characterized in that: The first recessed portion, the second recessed portion, and the third recessed portion are through holes disposed on the light adjustment layer.

8. The display panel according to claim 7, characterized in that: The light adjustment layer includes a second isolated island and a third isolated island, the second isolated island is located in the second concave portion, and the third isolated island is located in the third concave portion.

9. The display panel according to claim 8, characterized in that: The height of the side wall of the second island in the second direction increases as the distance from the center of the second sub-pixel in the first direction decreases; the height of the side wall of the third island in the second direction increases as the distance from the center of the third sub-pixel in the first direction decreases; the second direction is perpendicular to the side of the display backplane where the touch layer group is set, and the first direction is parallel to the side of the display backplane where the touch layer group is set.

10. The display panel according to claim 9, characterized in that: The side wall of the second island includes a slope, and the angle between the side wall of the second island 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 island includes a slope, and the angle between the side wall of the third island and the first reference plane is greater than or equal to 55° and less than or equal to 85°; the first reference plane is parallel to a side of the display backplane on which the touch layer group is set.

11. The display panel according to claim 8, characterized in that: The ratio of the area of ​​the orthographic projection of the second island on the display backplane to the area of ​​the orthographic projection of the second recessed portion on the display backplane is greater than or equal to 3% and less than or equal to 40%, and the ratio of the area of ​​the orthographic projection of the third island on the display backplane to the area of ​​the orthographic projection of the third recessed portion on the display backplane is greater than or equal to 3% and less than or equal to 40%.

12. The display panel according to claim 11, characterized in that: The maximum size of the orthographic projection of the second island on the display backplane is greater than or equal to 3 micrometers and less than or equal to 5 micrometers, and the maximum size of the orthographic projection of the third island on the display backplane is greater than or equal to 3 micrometers and less than or equal to 5 micrometers.

13. The display panel according to claim 5, characterized in that: The first recessed portion is a blind hole disposed on the light adjustment layer, and the second recessed portion and the third recessed portion are through holes disposed on the light adjustment layer.

14. The display panel according to claim 13, characterized in that: The thickness of the light adjustment layer is greater than or equal to 1.5 micrometers and less than or equal to 2.5 micrometers. The thickness of the light adjustment layer at the first recessed portion is greater than or equal to 0.5 micrometers and less than or equal to 1 micrometer.

15. The display panel according to claim 5, characterized in that: The height of the side wall of the first recessed portion in the second direction increases as the distance from the center of the first sub-pixel in the first direction increases; the height of the side wall of the second recessed portion in the second direction increases as the distance from the center of the second sub-pixel in the first direction increases; the height of the side wall of the third recessed portion in the second direction increases as the distance from the center of the third sub-pixel in the first direction increases; the second direction is perpendicular to a side of the display backplane on which the touch layer group is set, and the first direction is parallel to a side of the display backplane on which the touch layer group is set.

16. The display panel according to claim 15, characterized in that: The side wall of the first recessed portion includes a slope, and the angle between the side wall 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 side wall of the second recessed portion includes a slope, 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 slope, 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°; the first reference plane is parallel to a side of the display back panel where the touch layer group is set.

17. The display panel according to any one of claims 5 to 16, characterized in that: The display panel further includes: a light shielding layer, arranged on a side of the light regulating layer 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 second planarization layer is arranged on a side of the light shielding layer away from the display backplane.

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

19. The display panel according to claim 17, characterized in that: The first filter layer, the second filter layer and a portion of the third filter layer extend to the side of the light regulating layer away from the display back panel and do not overlap; the ring width of the overlapping portion of the first filter layer and the light regulating layer is greater than or equal to 0 and less than or equal to 2 microns, the ring width of the overlapping portion of the second filter layer and the light regulating layer is greater than or equal to 0 and less than or equal to 2 microns, and the ring width of the overlapping portion of the third filter layer and the light regulating layer is greater than or equal to 0 and less than or equal to 2 microns.

20. The display panel according to claim 17, characterized in that: The light adjustment layer is provided with a fourth recessed portion, a fifth recessed portion and a sixth recessed portion, the fourth recessed portion is surrounded by the first recessed portion, the fifth recessed portion is surrounded by the second recessed portion, and the sixth recessed portion is surrounded by the third recessed portion; the shading layer is also arranged in the fourth recessed portion, the fifth recessed portion and the sixth recessed portion, or the shading layer is also arranged in the fourth recessed portion, the fifth recessed portion and the sixth recessed portion, and the first filter layer is also arranged in the fourth recessed portion, the second filter layer is also arranged in the fifth recessed portion, and the third filter layer is also arranged in the sixth recessed portion.

21. The display panel according to claim 17, characterized in that: A portion of the first filter layer, the second filter layer and the third filter layer extend to the side of the light adjustment layer away from the display backplane without overlapping, and the shading layer is at least arranged on the side of the first filter layer, the second filter layer and the third filter layer away from the display backplane.

22. The display panel according to claim 17, characterized in that: The spacing between the edge line of the orthographic projection of the first 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 1 micron and less than or equal to 3 microns, the spacing between the edge line of the orthographic projection of the second via hole on the display backplane and the edge line of the orthographic projection of the second recessed portion on the display backplane is greater than or equal to 1 micron and less than or equal to 3 microns, the spacing between the edge line of the orthographic projection of the third via hole on the display backplane and the edge line of the orthographic projection of the third recessed portion on the display backplane is greater than or equal to 1 micron and less than or equal to 3 microns, and a portion of the first filter layer, the second filter layer and the third filter layer extend to the side of the shading layer away from the display backplane.

23. The display panel according to any one of claims 5 to 16, characterized in that: The thickness of the first filter layer is greater than that of the second filter layer, and the thickness of the first filter layer is greater than that of the third filter layer.

24. A display device, characterized in that: include: The display panel according to any one of claims 1 to 23.

Images