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 display panel and a display panel, the first light shielding layer is arranged on the light emitting side of the display back plate, a plurality of first via holes are formed in the first light shielding layer, the sub-pixels are located in orthographic projections of the first via holes on the display back plate, the orthographic projections of the first via holes on the display back plate are first areas, and other areas of the display back plate are second areas; the sub-pixels are located in the orthographic projection of the filter layer on the display backboard; the light filtering layer and the second light shielding layer are arranged on the side, away from the display back plate, of the first light shielding layer, a plurality of second via holes are formed in the second light shielding layer, and the orthographic projection of the second light shielding layer on the display back plate and the orthographic projection of the first light shielding layer on the display back plate are overlapped and jointly cover the second area; the orthographic projection of the second via hole on the display backboard covers the orthographic projection of the first via hole on the display backboard, and the area of the orthographic projection of the second via hole on the display backboard is larger than that of the orthographic projection of the first via hole on the display backboard. The display panel reduces side view angle brightness attenuation.

Description

Technical Field

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

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

[0003] However, the brightness attenuation of the current display panel at the side viewing angle is relatively large, resulting in a smaller viewing angle range of the display panel, which does not meet the needs of some users.

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

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

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

[0007] A display backplane, comprising a plurality of sub-pixels, wherein the display backplane has a first area and a second area;

[0008] a first light shielding layer, arranged on the light-emitting side of the display backplane, wherein a plurality of first via holes are arranged on the first light shielding layer, wherein the sub-pixel is located within an orthographic projection of the first via hole on the display backplane, wherein the orthographic projection of the first via hole on the display backplane is the first area, and other areas of the display backplane are the second area;

[0009] A filter layer is provided on a side of the first light shielding layer away from the display backplane, and the sub-pixel is located within the orthographic projection of the filter layer on the display backplane;

[0010] A second light-shielding layer is arranged on a side of the first light-shielding layer away from the display backplane, and a plurality of second via holes are arranged on the second light-shielding layer. The orthographic projection of the second light-shielding layer on the display backplane overlaps with the orthographic projection of the first light-shielding layer on the display backplane, and they jointly cover the second area, the orthographic projection of the second via hole on the display backplane covers the orthographic projection of the first via hole on the display backplane, and the area of ​​the orthographic projection of the second via hole on the display backplane is larger than the area of ​​the orthographic projection of the first via hole on the display backplane.

[0011] In an exemplary embodiment of the present disclosure, the display panel further includes:

[0012] A light regulating layer covers the first shading layer, the second shading layer is arranged on the side of the light regulating layer away from the display backplane, a plurality of recessed portions are arranged on the light regulating layer, the sub-pixels are located within the orthographic projections of the recessed portions on the display backplane, at least a portion of the filter layer is arranged in the recessed portions, and the refractive index of the filter layer is greater than the refractive index of the light regulating layer.

[0013] In an exemplary embodiment of the present disclosure, the first light-shielding layer includes a plurality of first light-shielding rings, the orthographic projection of the first light-shielding rings on the display backplane is a ring, and the inner ring of the first light-shielding rings is the first via hole.

[0014] In an exemplary embodiment of the present disclosure, a first gap is arranged between two adjacent first shading rings, so that a recessed structure is arranged on the light adjustment layer, and the orthographic projection of the recessed structure on the display back panel is located within the orthographic projection of the first gap on the display back panel.

[0015] In an exemplary embodiment of the present disclosure, at least a portion of the second light-shielding layer is disposed in the recessed structure, and an orthographic projection of the first gap on the display backplane is located within an orthographic projection of the second light-shielding layer on the display backplane.

[0016] In an exemplary embodiment of the present disclosure, a distance between a side of the second light-shielding layer facing away from the display backplane and the display backplane is a first distance, a distance between a side of the filter layer facing away from the display backplane and the display backplane is a second distance, and the first distance is less than or equal to the second distance.

[0017] In an exemplary embodiment of the present disclosure, at least some of the adjacent two first light-shielding rings are connected as one body.

[0018] In an exemplary embodiment of the present disclosure, the orthographic projection of the second via hole on the display backplane is the third area, the other area of ​​the display backplane is the fourth area, and the orthographic projection of the second light-shielding layer on the display backplane coincides with the fourth area.

[0019] In an exemplary embodiment of the present disclosure, the orthographic projection of the first light shielding layer on the display backplane coincides with the second area.

[0020] In an exemplary embodiment of the present disclosure, the second light-shielding layer includes a plurality of second light-shielding rings, the orthographic projection of the second light-shielding rings on the display backplane is a ring, and the inner ring of the second light-shielding rings is the second via hole.

[0021] In an exemplary embodiment of the present disclosure, a second gap is provided between two adjacent second light-shielding rings, or at least part of two adjacent second light-shielding rings are connected as one.

[0022] In an exemplary embodiment of the present disclosure, the orthographic projection of the first light-shielding layer on the display backplane coincides with the second area; and the orthographic projection of the second via on the display backplane is the third area, the other areas of the display backplane are the fourth area, and the orthographic projection of the second light-shielding layer on the display backplane coincides with the fourth area.

[0023] In an exemplary embodiment of the present disclosure, the filter layer includes a first filter portion, a second filter portion and a third filter portion, the filter colors of the first filter portion, the second filter portion and the third filter portion are different from each other, and at least two of the first filter portion, the second filter portion and the third filter portion extend to the side of the light adjustment layer away from the display back panel and are stacked to form the second shading layer.

[0024] In an exemplary embodiment of the present disclosure, the filter layer includes a first filter portion, a second filter portion and a third filter portion, and the first filter portion, the second filter portion and the third filter portion extend to the side of the adjacent light adjustment layer away from the display back panel without overlapping; at least a portion of the second shading layer is arranged on the side of the filter layer away from the display back panel.

[0025] In an exemplary embodiment of the present disclosure, an orthographic projection of the second light shielding layer on the display backplane does not overlap with an orthographic projection of the recessed portion on the display backplane.

[0026] In an exemplary embodiment of the present disclosure, a plurality of grooves are provided on the filter layer, and the orthographic projections of the grooves on the display backplane are located within the sub-pixels, and the display panel further includes:

[0027] The planarization layer is arranged on a side of the filter layer away from the display backplane, and a part of the planarization layer fills the groove.

[0028] In an exemplary embodiment of the present disclosure, the refractive index of the filter layer is greater than the refractive index of the planarization layer.

[0029] In an exemplary embodiment of the present disclosure, the distance between the groove side wall and the display back panel in the second direction increases as the distance from the edge line of the groove in the first direction decreases, the first direction is parallel to the display back panel, and the second direction is perpendicular to the display back panel.

[0030] In an exemplary embodiment of the present disclosure, the recessed portion is a through hole provided on the light adjustment layer.

[0031] According to another aspect of the present disclosure, a display device is provided, comprising: a display panel as described in any one of the above items.

[0032] The display panel disclosed in the present invention, on the one hand, the first light shielding layer and the second light shielding layer jointly form a black matrix, and the first light shielding layer and the second light shielding layer jointly shield the space between adjacent sub-pixels, thereby preventing the display panel from leaking light, preventing color mixing between adjacent sub-pixels, improving display contrast, and effectively preventing the influence of light on the thin film transistor area, thereby maintaining display stability and accuracy; on the other hand, the second light shielding layer arranged above the first light shielding layer can shield more stray light from emitting from the display panel, so that the dark state performance is excellent and the integrated black effect is improved; on the other hand, the first via hole is arranged to be smaller, so that the width of the first light shielding layer between adjacent sub-pixels is larger, and the second via hole is arranged to be larger, so that the width of the second light shielding layer between adjacent sub-pixels is smaller; the second light shielding layer far away from the display backplane is arranged to be narrower, so that more inclined light can be emitted from the display panel, thereby reducing the brightness attenuation of the side viewing angle and increasing the viewing angle range of the display panel; even if the first light shielding layer close to the display backplane is arranged to be wider, it will not affect the emission of inclined light, and the first light shielding layer can make up for the insufficient light shielding caused by the narrow setting of the second light shielding layer.

[0033] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0035] Figure 1 It is a schematic structural diagram of a first exemplary embodiment of a display panel disclosed in the present invention.

[0036] Figure 2 for Figure 1 A schematic structural diagram of an example implementation of a backplane is shown in FIG.

[0037] Figure 3 for Figure 1 Schematic diagram of a top view of the first shading layer.

[0038] Figure 4 for Figure 1Schematic top view of the second light-shielding layer.

[0039] Figure 5 for Figure 3 The first shading layer in Figure 4 A top view schematic diagram of the second light shielding layer after being stacked and coordinated with the sub-pixel.

[0040] Figure 6 It is a top view schematic diagram of the light adjustment layer and the display back panel.

[0041] Figure 7 FIG. 4 is a schematic structural diagram of another exemplary implementation of the first light shielding layer in the display panel of the present disclosure.

[0042] Figure 8 FIG. 4 is a schematic structural diagram of another exemplary implementation of the first light shielding layer in the display panel of the present disclosure.

[0043] Fig. 9 FIG. 4 is a schematic structural diagram of another exemplary implementation of the second light shielding layer in the display panel of the present disclosure.

[0044] Fig.10 FIG. 4 is a schematic structural diagram of another exemplary implementation of the second light shielding layer in the display panel of the present disclosure.

[0045] Fig.11 It is a schematic structural diagram of a second exemplary embodiment of a display panel disclosed in the present invention.

[0046] Fig.12 It is a schematic structural diagram of a third exemplary embodiment of a display panel disclosed in the present invention.

[0047] Fig.13 FIG. 4 is a schematic structural diagram of a fourth exemplary embodiment of a display panel according to the present disclosure.

[0048] Fig.14 It is a schematic structural diagram of a fifth exemplary embodiment of a display panel according to the present disclosure.

[0049] Fig.15 It is a schematic structural diagram of a sixth exemplary embodiment of a display panel according to the present disclosure.

[0050] Fig.16 It is a schematic structural diagram of a seventh exemplary embodiment of a display panel disclosed in the present invention.

[0051] Fig.17 It is a schematic structural diagram of an eighth exemplary embodiment of a display panel according to the present disclosure.

[0052] Fig.18 for Figure 14-17 A partial enlarged schematic diagram of the middle groove.

[0053] Description of reference numerals:

[0054] 100, display backplane; 1001, first area; 1002, second area; 1003, third area; 1004, fourth area;

[0055] 1. Substrate substrate;

[0056] 2. driving substrate; 21. shielding 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 connecting conductor layer; 271. source; 272. drain; 28. first planarization layer;

[0057] 3. Light-emitting substrate; 31. First electrode; 32. Pixel definition layer; 321. Pixel opening; 33. Light-emitting layer group; 34. Second electrode; 35. Sub-pixel; 35R. Red sub-pixel; 35G. Green sub-pixel; 35B. Blue sub-pixel;

[0058] 4. Encapsulation layer group; 41. First inorganic layer; 42. Organic layer; 43. Second inorganic layer;

[0059] 5. Touch layer group;

[0060] 6. first light shielding layer; 61. first via hole; 62. first light shielding ring; 63. first gap;

[0061] 7, filter layer; 71, first filter part; 72, second filter part; 73, third filter part; 74, groove; 741, first part; 742, second part; 743, third part;

[0062] 8. second light shielding layer; 81. second via hole; 82. second light shielding ring; 83. second gap;

[0063] 9. light adjustment layer; 91. recessed portion; 92. recessed structure;

[0064] 10. Planarization layer;

[0065] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0066] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0067] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0068] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used merely as labels and are not intended to limit the quantity of their objects.

[0069] In this application, unless otherwise clearly specified 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 connection; it can be directly connected or indirectly connected through an intermediate medium. "And / or" is just a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0070] The exemplary embodiment of the present disclosure provides a display panel, referring to Figure 1-Figure 18As shown, the display panel may include a display backplane 100, a first light shielding layer 6, a filter layer 7 and a second light shielding layer 8; the display backplane 100 may include a plurality of sub-pixels 35, and the display backplane 100 has a first area 1001 and a second area 1002; the first light shielding layer 6 is arranged on the light-emitting side of the display backplane 100, and a plurality of first via holes 61 are arranged on the first light shielding layer 6, and the sub-pixels 35 are located within the orthographic projection of the first via holes 61 on the display backplane 100, and the orthographic projection of the first via holes 61 on the display backplane 100 is the first area 1001, and the other areas of the display backplane 100 are the second areas 1002; the filter layer 7 is arranged on the first light shielding layer 6 away from the display backplane 1 00, the sub-pixel 35 is located within the orthographic projection of the filter layer 7 on the display backplane 100; the second shading layer 8 is arranged on the side of the first shading layer 6 away from the display backplane 100, and a plurality of second via holes 81 are arranged on the second shading layer 8. The orthographic projection of the second shading layer 8 on the display backplane 100 overlaps with the orthographic projection of the first shading layer 6 on the display backplane 100, and they jointly cover the second area 1002, the orthographic projection of the second via hole 81 on the display backplane 100 covers the orthographic projection of the first via hole 61 on the display backplane 100, and the area of ​​the orthographic projection of the second via hole 81 on the display backplane 100 is greater than the area of ​​the orthographic projection of the first via hole 61 on the display backplane 100.

[0071] In the display panel disclosed in the present invention, on the one hand, the first light shielding layer 6 and the second light shielding layer 8 jointly form a black matrix, and the first light shielding layer 6 and the second light shielding layer 8 jointly shield the space between adjacent sub-pixels 35, thereby preventing light leakage from the display panel, preventing color mixing between adjacent sub-pixels 35, improving display contrast, and effectively preventing the influence of light on the thin film transistor area, thereby maintaining display stability and accuracy; on the other hand, the second light shielding layer 8 arranged above the first light shielding layer 6 can shield more stray light from emitting from the display panel, so that the dark state performance is excellent and the integrated black effect is improved; on the other hand, the first via hole 61 is arranged The second through hole 81 is set larger, so that the width of the second light-shielding layer 6 between adjacent sub-pixels 35 is larger, and the second through hole 81 is set larger, so that the width of the second light-shielding layer 8 between adjacent sub-pixels 35 is smaller; the second light-shielding layer 8 far away from the display backplane 100 is set narrower, so that more inclined light can be emitted from the display panel, thereby reducing the brightness attenuation of the side viewing angle and increasing the viewing angle range of the display panel; even if the first light-shielding layer 6 close to the display backplane 100 is set wider, it will not affect the emission of inclined light, and the first light-shielding layer 6 can make up for the insufficient shading caused by the narrow setting of the second light-shielding layer 8.

[0072] The display backplane 100 can be an OLED (Organic Electroluminescence Display) display backplane 100, a QLED (Quantum Dot Light Emitting Diodes) display backplane 100, a Micro-LED (Micro-light emitting diode) display backplane 100, etc. The display backplane 100 has a light emitting side and a non-light emitting side, the light emitting side and the non-light emitting side are arranged opposite to each other, and a picture can be displayed on the light emitting side, and the side that displays the picture is the display surface.

[0073] The following description will be made by taking the OLED display backplane 100 as an example.

[0074] In this example implementation, refer to Figure 2 As shown, the display backplane 100 may include a base substrate 1, a driving substrate 2, a light-emitting substrate 3 and an encapsulation layer group 4. The driving substrate 2 may drive the light-emitting substrate 3 to emit light. The driving substrate 2 is arranged on one side of the base substrate 1, and the light-emitting substrate 3 is arranged on the side of the driving substrate 2 away from the base substrate 1; the driving substrate 2 may include a plurality of driving circuits arranged in an array, and the light-emitting substrate 3 may include a plurality of light-emitting devices arranged in an array, and the driving circuit may drive the light-emitting devices to emit light. The encapsulation layer group 4 is arranged on the side of the light-emitting substrate 3 away from the base substrate 1.

[0075] In this example implementation, refer to Figure 2 As shown, the material of the base substrate 1 may include an inorganic material, for example, the inorganic material may be glass, quartz or metal. The material of the base substrate 1 may also include an organic material, for example, the organic material may be a resin material such as polyimide, polycarbonate, polyacrylate, polyetherimide, polyethersulfone, polyethylene terephthalate and polyethylene naphthalate. The base substrate 1 may be formed by a plurality of material layers, for example, the base substrate 1 may include a plurality of substrate layers, and the material of the substrate layer may be any of the above materials. Of course, the base substrate 1 may also be set as a single layer, which may be any of the above materials.

[0076] Specifically, refer to Figure 2 As shown, a shielding layer 21 may be provided on one side of the base substrate 1. Light incident from the base substrate 1 into the active layer will generate photogenerated 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; the shielding layer 21 can shield the light incident from the base substrate 1, thereby avoiding affecting the characteristics of the thin film transistor and avoiding affecting the display quality of the display device. Depending on the type of thin film transistor, the shielding layer 21 may be omitted.

[0077] A buffer layer 22 may also be formed on the side of the shielding layer 21 away from the base substrate 1. The buffer layer 22 serves to block water vapor and impurity ions in the base substrate 1 (especially organic materials), and serves to add hydrogen ions to the active layer formed subsequently. The buffer layer 22 is made of insulating material, which can insulate and isolate the shielding layer 21 from the active layer. The buffer layer 22 may include silicon nitride, silicon oxide, or silicon oxynitride. Depending on the type of the base substrate 1 or process conditions, the buffer layer 22 may be omitted.

[0078] An active layer is disposed on the side of the buffer layer 22 facing away from the base substrate 1. The active layer may include a channel portion 231 and conductor portions disposed 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 disposed on the side of the active layer facing away from the base substrate 1. A gate layer 25 is disposed on the side of the gate insulating layer 24 facing away from the base substrate 1. The gate layer 25 may include a gate 251 and a gate line (not shown in the figure).

[0079] An interlayer dielectric layer 26 is arranged on the side of the gate layer 25 facing away from the base substrate 1, and a via is arranged on the interlayer dielectric layer 26, and the via is connected to the source connection part 232 and the drain connection part 233; a first connecting conductor layer 27 is arranged on the side of the interlayer dielectric layer 26 facing away from the base substrate 1, and the first connecting conductor layer 27 may include a source 271, a drain 272 and a data line (not shown in the figure), and the data line may be connected to the source 271, or a part of the data line may serve as the source 271; the source 271 is connected to the source connection part 232 through the via on the interlayer dielectric layer 26, and the drain 272 is connected to the drain connection part 233 through the via on the interlayer dielectric layer 26.

[0080] 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 base substrate 1, and a via 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 base substrate 1, and the second connection conductor layer may include a second source 271 and / or a second drain 272, and the second source 271 and the second drain 272 are connected to the source 271 and the drain 272 respectively through the vias on the passivation layer. Of course, a third connection conductor layer, a fourth connection conductor layer, etc. may also be provided as needed.

[0081] 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 away from the substrate 1, and a via is provided on the first planarization layer 28, and the via is connected to the drain 272. The channel portion 231, the gate 251, the source 271 and the drain 272 form a thin film transistor.

[0082] 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 dual-gate type, and its specific structure will not be described in detail here. Moreover, in the case of using thin film transistors with opposite polarities or when the current direction changes during circuit operation, the functions of the "source 271" and the "drain 272" are sometimes interchanged. Therefore, in this specification, the "source 271" and the "drain 272" may be interchanged.

[0083] Please continue to refer to Figure 2 As shown, a light-emitting substrate 3 is disposed on the side of the first planarization layer 28 facing away from the base substrate 1 . The light-emitting substrate 3 may include a first electrode 31 , a pixel definition layer 32 , a light-emitting layer group 33 and a second electrode 34 .

[0084] Specifically, a first electrode 31 is provided on the side of the first planarization layer 28 facing away from the base substrate 1 . The first electrode 31 is connected to the drain 272 of the driving backplane through a via hole. The drain 272 provides a driving signal to the first electrode 31 . The first electrode 31 may be an anode (pixel electrode).

[0085] A pixel definition layer 32 is disposed on the side of the first electrode 31 facing away from the base substrate 1, and a pixel opening 321 is disposed on the pixel definition layer 32, and the pixel opening 321 is connected to the first electrode 31, that is, at least part of the first electrode 31 is not covered by the pixel definition layer 32. The pixel definition layer 32 can be made of a black material that can absorb photons, for example, the material of the pixel definition layer 32 can be black ink; the pixel definition layer 32 can absorb stray light and improve the display effect.

[0086] A light-emitting layer group 33 is disposed on the side of the pixel definition layer 32 facing away from the base substrate 1, and at least part of the light-emitting layer group 33 is located in the pixel opening 321. A second electrode 34 is disposed on the side of the light-emitting layer group 33 facing away from the base substrate 1, and the second electrode 34 can be a cathode (common electrode). The light-emitting layer group 33 in one pixel opening 321 emits light to form a sub-pixel 35, so that the orthogonal projection of the sub-pixel 35 on the base substrate 1 is the orthogonal projection of the light-emitting layer group 33 in the pixel opening 321 on the base substrate 1.

[0087] It should be noted that since the side walls of the groove of the pixel opening portion 321 of the pixel definition layer 32 are inclined, the sub-pixel 35 refers to the range of the bottom wall of the groove of the pixel opening portion 321 of the pixel definition layer 32, that is, the sub-pixel 35 refers to the range enclosed by the edge of the pixel opening portion 321 of the pixel definition layer 32 close to the base substrate 1.

[0088] The light-emitting layer group 33 may include a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer and an electron injection layer stacked in sequence, the hole injection layer is in contact with the first electrode 31, and the electron injection layer is in contact with the second electrode 34. Of course, in other exemplary embodiments of the present disclosure, the light-emitting layer group 33 may only include a hole transport layer, a light-emitting layer and an electron transport layer, and the light-emitting layer group 33 may also be other structures, and its specific structure can be set as needed.

[0089] The display backplane 100 may further include an encapsulation layer group 4, which is disposed on the side of the second electrode 34 away from the base substrate 1. The encapsulation layer group 4 is used to encapsulate the display backplane 100 to prevent external water vapor, impurities, etc. from entering the interior of the display backplane 100 and affecting the display effect of the display backplane 100. The encapsulation layer group 4 can be set to be multi-layered, and the encapsulation layer group 4 may include an organic layer 42 and an inorganic layer. Specifically, the encapsulation layer group 4 may include a first inorganic layer 41, an organic layer 42 disposed on the side of the first inorganic layer 41 away from the base substrate 1, and a second inorganic layer 43 disposed on the side of the organic layer 42 away from the base substrate 1. The materials of the first inorganic layer 41, the organic layer 42, and the second inorganic layer 43 are not described in detail here. Of course, the encapsulation layer group 4 may also include more layers or fewer layers.

[0090] In some exemplary embodiments of the present disclosure, the display backplane 100 may further include a touch layer group 5, which is disposed on a side of the encapsulation layer group 4 away from the base substrate 1, and the touch layer group 5 enables the display panel to implement a touch function. Of course, the touch layer group 5 may not be provided.

[0091] In this exemplary embodiment, a first light shielding layer 6 is provided on the light emitting side of the display backplane 100. For example, when a touch layer group 5 is provided, a first light shielding layer 6 is provided on the side of the touch layer group 5 facing away from the base substrate 1; Figure 1 As shown, in the case where the touch layer group 5 is not provided, a first light shielding layer 6 is provided on the side of the encapsulation layer group 4 facing away from the base substrate 1. The thickness of the first light shielding layer 6 is greater than or equal to 1 micron and less than or equal to 1.5 microns. For example, the thickness of the first light shielding layer 6 can be 1.05 microns, 1.1 microns, 1.15 microns, 1.2 microns, 1.25 microns, 1.3 microns, 1.35 microns, 1.4 microns, 1.45 microns, etc.

[0092] The first light shielding layer 6 is provided with a plurality of first via holes 61, and the sub-pixel 35 is located within the orthographic projection of the first via hole 61 on the display backplane 100. For example, the edge line of the sub-pixel 35 may coincide with the edge line of the orthographic projection of the first via hole 61 on the display backplane 100, that is, the sub-pixel 35 and the orthographic projection of the first via hole 61 on the display backplane 100 completely coincide; or the orthographic projection of the first via hole 61 on the display backplane 100 completely covers the sub-pixel 35, and the orthographic projection area of ​​the first via hole 61 on the display backplane 100 is larger than the area of ​​the sub-pixel 35. Such a setting prevents the first light shielding layer 6 from affecting the light output of the sub-pixel 35.

[0093] Specifically, the distance between the edge line of the sub-pixel 35 and the edge line of the orthographic projection of the first via 61 on the display backplane 100 is greater than or equal to 2 microns and less than or equal to 8 microns. For example, the distance between the edge line of the sub-pixel 35 and the edge line of the orthographic projection of the first via 61 on the display backplane 100 can be 2.3 microns, 2.5 microns, 2.8 microns, 3 microns, 3.2 microns, 3.5 microns, 3.7 microns, 4 microns, 4.3 microns, 4.5 microns, 4.8 microns, 5 microns, 5.2 microns, 5.5 microns, 5.7 microns, 6 microns, 6.3 microns, 6.5 microns, 6.8 microns, 7 microns, 7.2 microns, 7.5 microns, 7.7 microns, and so on.

[0094] During the preparation of the first via hole 61 on the first light shielding layer 6, due to equipment errors, process errors, etc., there will always be a certain error between the position of the prepared first via hole 61 and the designed (ideal) position of the first via hole 61. Therefore, if the distance between the edge line of the sub-pixel 35 and the edge line of the orthographic projection of the first via hole 61 on the display backplane 100 is too small, the first via hole 61 will be offset due to the above-mentioned error, causing the first light shielding layer 6 to cover the sub-pixel 35, thereby blocking the light output of the sub-pixel 35.

[0095] If the distance between the edge line of the sub-pixel 35 and the edge line of the positive projection of the first via 61 on the display backplane 100 is too large, the width of the first shading layer 6 between two adjacent sub-pixels 35 will be too small, and the first shading layer 6 will have a weaker shielding effect on the light between adjacent sub-pixels 35, which may easily cause defects such as light leakage, color mixing, and reduced display contrast.

[0096] Within the above numerical range, even when the first via hole 61 is offset, the first shading layer 6 will not cover the sub-pixel 35, thereby ensuring the light output efficiency of the sub-pixel 35; and ensuring that the first shading layer 6 blocks the light between adjacent sub-pixels 35, thereby reducing defects such as light leakage, color mixing, and reduced display contrast.

[0097] Moreover, refer to Figure 3As shown, the orthographic projection of the first via hole 61 on the display backplane 100 is the first area 1001, and the other area of ​​the display backplane 100 is the second area 1002, that is, the display backplane 100 has the first area 1001 and the second area 1002, the first area 1001 is the area covered by the orthographic projection of the first via hole 61 on the display backplane 100, and the second area 1002 is the area not covered by the orthographic projection of the first via hole 61 on the display backplane 100. The first area 1001 is set to be multiple at intervals, and the second area 1002 is connected to form a piece.

[0098] It should be noted that the display backplane 100 here may refer to the display area of ​​the display backplane 100 , and there is no limitation on the relationship between the non-display area around the display area and the orthographic projection of the first via hole 61 on the display backplane 100 .

[0099] In this example implementation, please continue to refer to Figure 1 As shown, a filter layer 7 is provided on the side of the first light shielding layer 6 away from the display backplane 100, and the sub-pixel 35 is located within the orthographic projection of the filter layer 7 on the display backplane 100. For example, the edge line of the sub-pixel 35 may coincide with the edge line of the orthographic projection of the filter layer 7 on the display backplane 100, that is, the sub-pixel 35 and the orthographic projection of the filter layer 7 on the display backplane 100 completely coincide; or the orthographic projection of the filter layer 7 on the display backplane 100 completely covers the sub-pixel 35, and the area of ​​the orthographic projection of the filter layer 7 on the display backplane 100 is larger than the area of ​​the sub-pixel 35. In this way, the light emitted by the sub-pixel 35 is basically emitted through the filter layer 7, and the light can be filtered by the filter layer 7 to realize monochrome (red, green, blue) display.

[0100] In this example implementation, refer to Figure 1 and Figure 5 As shown, a second shading layer 8 is provided on the side of the first shading layer 6 facing away from the display backplane 100, and a plurality of second vias 81 are provided on the second shading layer 8. The orthographic projection of the second shading layer 8 on the display backplane 100 overlaps with the orthographic projection of the first shading layer 6 on the display backplane 100, and they jointly cover the second area 1002, that is, the orthographic projection of the second shading layer 8 on the display backplane 100 and the orthographic projection of the first shading layer 6 on the display backplane 100 jointly cover the second area 1002, and do not cover the first area 1001.

[0101] In this arrangement, the first shading layer 6 and the second shading layer 8 jointly form a black matrix (BM), and the first shading layer 6 and the second shading layer 8 jointly block the space between adjacent sub-pixels 35, thereby preventing light leakage from the display panel, preventing color mixing between adjacent sub-pixels 35, improving display contrast, and effectively preventing the influence of light on the thin film transistor area, thereby maintaining display stability and accuracy.

[0102] The second light shielding layer 8 disposed above the first light shielding layer 6 can shield more stray light from emitting from the display panel, thereby achieving excellent dark state performance and improving the integrated black effect.

[0103] Moreover, through simulation, it is obtained that the reflectivity is about 6.51%, which is much lower than the reflectivity of about 7.3% in the prior art; the hue a* is about -0.38, which is closer to 0 than the -2 or so in the prior art; the hue b* is about -1.77, which is closer to 0 than the -2 or so in the prior art, and the dark-state integrated black effect is better.

[0104] Moreover, the orthographic projection of the second via hole 81 on the display backplane 100 covers the orthographic projection of the first via hole 61 on the display backplane 100, and the area of ​​the orthographic projection of the second via hole 81 on the display backplane 100 is larger than the area of ​​the orthographic projection of the first via hole 61 on the display backplane 100; that is, the first via hole 61 is set smaller, so that the width of the first shading layer 6 between adjacent sub-pixels 35 is larger, and the second via hole 81 is set larger, so that the width of the second shading layer 8 between adjacent sub-pixels 35 is smaller; the second shading layer 8 away from the display backplane 100 is set narrower, so that more inclined light can be emitted from the display panel, thereby reducing the brightness attenuation of the side viewing angle and increasing the viewable viewing angle range of the display panel; even if the first shading layer 6 close to the display backplane 100 is set wider, it will not affect the emission of the inclined light, and the first shading layer 6 can compensate for the insufficient shading caused by the narrow setting of the second shading layer 8.

[0105] Reference Figure 1 As shown in the figure, the dotted line represents the shading layer in the related art, the shading layer is set as a layer, and is set on the side of the filter layer 7 away from the base substrate 1. The dotted arrow in the figure represents the light with the largest inclination angle emitted from the display panel in the related art, and the solid arrow represents the light with the largest inclination angle emitted from the display panel in the present disclosure. It can be seen from the figure that the present disclosure can increase α in the single-side side viewing angle relative to the related art.

[0106] It should be noted that, since the side walls of the first via hole 61 are inclined, the range of the orthographic projection of the first via hole 61 on the display back plate 100 refers to the orthographic projection of the side (bottom wall) of the first via hole 61 close to the display back plate 100 on the display back plate 100; similarly, since the side walls of the second via hole 81 are inclined, the range of the orthographic projection of the second via hole 81 on the display back plate 100 refers to the orthographic projection of the side (bottom wall) of the second via hole 81 close to the display back plate 100 on the display back plate 100.

[0107] In this example implementation, refer to Figure 1As shown, a light regulating layer 9 is disposed on the side of the first light shielding layer 6 away from the display backplane 100, and the light regulating layer 9 covers the first light shielding layer 6, that is, the light regulating layer 9 can completely cover the first light shielding layer 6. In this case, the second light shielding layer 8 is disposed on the side of the light shielding layer 9 away from the display backplane 100, that is, the first light shielding layer 6, the light regulating layer 9 and the second light shielding layer 8 are stacked in sequence in a direction away from the display backplane 100.

[0108] The thickness of the light adjustment layer 9 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 adjustment layer 9 can be 1.55 microns, 1.6 microns, 1.65 microns, 1.7 microns, 1.75 microns, 1.8 microns, 1.85 microns, 1.9 microns, 1.95 microns, 2 microns, 2.05 microns, 2.1 microns, 2.15 microns, 2.2 microns, 2.25 microns, 2.3 microns, 2.35 microns, 2.4 microns, 2.45 microns, etc.

[0109] If the thickness of the light regulating layer 9 is too thin, the light regulating layer 9 is insufficient to cover the first light shielding layer 6, resulting in the light regulating layer 9 and the filter layer 7 being unable to form a total reflection interface at some locations, which is not conducive to improving the front light output efficiency of the display panel.

[0110] If the thickness of the light adjustment layer 9 is too thick, it will be disadvantageous for the subsequently formed filter layer 7 to climb up, and will also cause the thickness of the display panel to be thick, which is disadvantageous for the thin and light setting of the display panel.

[0111] The above numerical range not only ensures that the light adjustment layer 9 is sufficient to cover the first shading layer 6, but also that the light adjustment layer 9 can form a total reflection interface with the filter layer 7, which is beneficial to improving the front light output efficiency of the display panel; it is also beneficial to the subsequently formed filter layer 7 climbing, which is beneficial to the thin and light setting of the display panel.

[0112] A plurality of recessed portions 91 are provided on the light adjustment layer 9, and the recessed portions 91 may be through holes provided on the light adjustment layer 9, so that the light adjustment layer 9 does not cover the encapsulation layer group 4 or the touch layer group 5 at the position of the recessed portions 91. Of course, in some other exemplary embodiments of the present disclosure, the recessed portions 91 may be blind holes provided on the light adjustment layer 9, that is, the bottom wall of the recessed portions 91 is still the light adjustment layer 9, but the thickness of the light adjustment layer 9 at the position of the recessed portions 91 is relatively thin.

[0113] Reference Figure 6As shown, the sub-pixel 35 is located within the orthographic projection of the recessed portion 91 on the display backplane 100. For example, the edge line of the sub-pixel 35 may coincide with the edge line of the orthographic projection of the recessed portion 91 on the display backplane 100, that is, the sub-pixel 35 completely coincides with the orthographic projection of the recessed portion 91 on the display backplane 100; or the orthographic projection of the recessed portion 91 on the display backplane 100 completely covers the sub-pixel 35, and the area of ​​the orthographic projection of the recessed portion 91 on the display backplane 100 is greater than the area of ​​the sub-pixel 35.

[0114] Moreover, the light adjustment layer 9 is basically provided as a whole layer, and except for the recessed portion 91 , no other via holes, gaps, etc. are provided on the light adjustment layer 9 .

[0115] It should be noted that, since the side walls of the recess 91 are inclined, the range of the orthographic projection of the recess 91 on the display back panel 100 refers to the orthographic projection of the side (bottom wall) of the recess 91 close to the display back panel 100 on the display back panel 100 .

[0116] Specifically, the distance between the edge line of the sub-pixel 35 and the edge line of the orthographic projection of the recessed portion 91 on the display back panel 100 is greater than or equal to 0 and less than or equal to 2 microns. For example, the distance between the edge line of the sub-pixel 35 and the edge line of the orthographic projection of the recessed portion 91 on the display back panel 100 can be 0.3 microns, 0.5 microns, 0.8 microns, 1 micron, 1.2 microns, 1.5 microns, 1.7 microns, etc.

[0117] During the preparation of the recessed portion 91 on the light adjustment layer 9, due to equipment errors, process errors, etc., there will always be a certain error between the position of the recessed portion 91 formed by the preparation and the position of the designed (ideal) recessed portion 91. Therefore, if the distance between the edge line of the sub-pixel 35 and the edge line of the positive projection of the recessed portion 91 on the display backplane 100 is too small, the recessed portion 91 will be offset due to the above-mentioned error, causing the light adjustment layer 9 to cover the sub-pixel 35, thereby blocking the light output of the sub-pixel 35.

[0118] If the distance between the edge line of the sub-pixel 35 and the edge line of the positive projection of the recessed portion 91 on the display back panel 100 is too large, the remaining portion of the light adjustment layer 9 will be narrower and insufficient to cover the first light-shielding layer 6, resulting in the light adjustment layer 9 and the filter layer 7 being unable to form a total reflection interface at some locations, which is not conducive to improving the front light output efficiency of the display panel.

[0119] Within the above numerical range, even when the recessed portion 91 is offset, the light regulating layer 9 will not cover the sub-pixel 35, thereby ensuring the light output efficiency of the sub-pixel 35; and ensuring that the light regulating layer 9 is sufficient to cover the first light-shielding layer 6, the light regulating layer 9 can form a total reflection interface with the filter layer 7, which is beneficial to improving the front light output efficiency of the display panel.

[0120] At least part of the filter layer 7 is disposed in the recessed portion 91. For example, the filter layer 7 may be disposed only in the recessed portion 91, or part of the filter layer 7 may be disposed in the recessed portion 91, and the other part of the filter layer 7 may be disposed outside the recessed portion 91 and located on the side of the light adjustment layer 9 away from the display backplane 100. In this arrangement, the light emitted by the sub-pixel 35 is basically emitted through the filter layer 7, and the filter layer 7 may filter the light to realize a monochrome (red, green, blue) display.

[0121] Moreover, the refractive index of the filter layer 7 is greater than the refractive index of the light adjustment layer 9. Specifically, the refractive index of the filter layer 7 is greater than or equal to 1.65 and less than or equal to 1.85. For example, the refractive index of the filter layer 7 can be 1.67, 1.7, 1.73, 1.75, 1.78, 1.8, 1.82, etc.; the refractive index of the light adjustment layer 9 is greater than or equal to 1.4 and less than or equal to 1.55. For example, the refractive index of the light adjustment layer 9 can be 1.42, 1.45, 1.47, 1.5, 1.53, etc.

[0122] With such an arrangement, the light emitted from the filter layer 7 to the light regulating layer 9 is emitted from a light-dense medium to a light-sparse medium. The incident angle of the light with a larger inclination angle on the side wall of the recessed portion 91 is also larger, which is easy to exceed the critical angle of total reflection and cause total reflection, thereby changing the optical path of the light with a larger inclination angle, so that the light with a larger inclination angle can also be emitted from the front of the display panel, thereby increasing the light output efficiency of the front of the display panel and reducing the light output efficiency of the side of the display panel, thereby reducing defects such as color deviation.

[0123] Furthermore, simulations show that the power consumption benefit of such a setting can reach 37.8%, which is about 8% higher than the power consumption benefit of about 29.9% in the prior art, thereby effectively reducing power consumption while achieving the same brightness.

[0124] In some example embodiments of the present disclosure, reference is made to Figure 1 and Figure 3As shown, the first light shielding layer 6 may include a plurality of first light shielding rings 62, and the first light shielding rings 62 are arranged one by one with the sub-pixels 35. The orthographic projection of the first light shielding ring 62 on the display backplane 100 is annular; and the orthographic projection of the first light shielding ring 62 on the display backplane 100 is adapted to the sub-pixel 35, for example, the sub-pixel 35 is arranged in a circular shape, and the orthographic projection of the first light shielding ring 62 on the display backplane 100 is arranged in a circular shape; the sub-pixel 35 is arranged in a rectangular shape, and the orthographic projection of the first light shielding ring 62 on the display backplane 100 is arranged in a rectangular shape; the sub-pixel 35 is arranged in an elliptical shape, and the orthographic projection of the first light shielding ring 62 on the display backplane 100 is arranged in an elliptical shape. The inner ring of the first light shielding ring 62 is the first via 61.

[0125] Specifically, the ring width of the first light shielding ring 62 is greater than or equal to 2 microns and less than or equal to 4 microns. For example, the ring width of the first light shielding ring 62 can be 2.3 microns, 2.5 microns, 2.8 microns, 3 microns, 3.2 microns, 3.5 microns, 3.8 microns, etc.

[0126] If the width of the first light shielding ring 62 is too small, it cannot form a black matrix together with the second light shielding layer 8, and cannot shield the space between adjacent sub-pixels 35. If the width of the first light shielding ring 62 is too large, the width of the first gap 63 between two adjacent first light shielding rings 62 is too small, which has little effect on reducing the height of the second light shielding layer 8 and reducing the brightness attenuation at side viewing angles.

[0127] The above numerical range not only ensures that the first shading layer 6 can form a black matrix together with the second shading layer 8 to block the space between adjacent sub-pixels 35, but also can effectively reduce the height of the second shading layer 8, thereby reducing the brightness attenuation at side viewing angles.

[0128] Moreover, refer to Figure 1 and Figure 3 As shown, a first gap 63 is provided between two adjacent first shading rings 62, that is, there is no connection between the two adjacent first shading rings 62, so that after the light adjustment layer 9 covers the first shading layer 6, a recessed structure 92 is provided on the light adjustment layer 9, and the orthographic projection of the recessed structure 92 on the display back plate 100 is located within the orthographic projection of the first gap 63 on the display back plate 100. For example, the edge line of the orthographic projection of the recessed structure 92 on the display back plate 100 may coincide with the edge line of the orthographic projection of the first gap 63 on the display back plate 100, or the orthographic projection of the first gap 63 on the display back plate 100 may cover the orthographic projection of the recessed structure 92 on the display back plate 100, and the area of ​​the orthographic projection of the first gap 63 on the display back plate 100 is larger than the area of ​​the orthographic projection of the recessed structure 92 on the display back plate 100.

[0129] In this case, at least a portion of the second light-shielding layer 8 is disposed in the recessed structure 92 . For example, the entire second light-shielding layer 8 may be disposed in the recessed structure 92 , or a portion of the second light-shielding layer 8 may be disposed in the recessed structure 92 .

[0130] The orthographic projection of the first gap 63 on the display backplane 100 is located within the orthographic projection of the second shading layer 8 on the display backplane 100. For example, the edge line of the orthographic projection of the first gap 63 on the display backplane 100 may coincide with the edge line of the orthographic projection of the second shading layer 8 on the display backplane 100, or the orthographic projection of the second shading layer 8 on the display backplane 100 covers the orthographic projection of the first gap 63 on the display backplane 100, and the area of ​​the orthographic projection of the second shading layer 8 on the display backplane 100 is larger than the area of ​​the orthographic projection of the first gap 63 on the display backplane 100.

[0131] In this exemplary embodiment, a portion of the second light shielding layer 8 is disposed in the recessed structure 92, and another portion of the second light shielding layer 8 is disposed outside the recessed structure 92. In this manner, it is ensured that the first light shielding layer 6 and the second light shielding layer 8 jointly form a black matrix, and the first light shielding layer 6 and the second light shielding layer 8 jointly shield the space between adjacent sub-pixels 35, thereby avoiding light leakage caused by a gap between the orthographic projection of the first light shielding layer 6 on the display backplane 100 and the orthographic projection of the second light shielding layer 8 on the display backplane 100.

[0132] Moreover, such a setting can make the first distance less than or equal to the second distance, the distance between the side of the second light shielding layer 8 facing away from the display backplane 100 and the display backplane 100 is the first distance, and the distance between the side of the filter layer 7 facing away from the display backplane 100 and the display backplane 100 is the second distance. That is, the thickness of the second light shielding layer 8 covering the light adjustment layer 9 and not located in the recessed structure 92 can be set to be thinner; so that more inclined light can be emitted from the display panel, thereby reducing the brightness attenuation of the side viewing angle and increasing the viewing angle range of the display panel. Of course, in some other example embodiments of the present disclosure, the first distance can also be greater than the second distance, that is, the side of the second light shielding layer 8 facing away from the display backplane 100 can protrude from the side of the filter layer 7 facing away from the display backplane 100.

[0133] In addition, refer to Figure 7As shown, in some other example embodiments of the present disclosure, at least some of the two adjacent first light-shading rings 62 may be connected as a whole, that is, all of the two adjacent first light-shading rings 62 may be connected as a whole, or some of the two adjacent first light-shading rings 62 may be connected as a whole, while the other part of the two adjacent first light-shading rings 62 may not be connected as a whole; for example, when the distance between the two adjacent first light-shading rings 62 is relatively close, the two adjacent first light-shading rings 62 are connected as a whole; when the distance between the two adjacent first light-shading rings 62 is relatively far, a first gap 63 may be provided between the two adjacent first light-shading rings 62.

[0134] In this case, refer to Figure 4 As shown, the orthographic projection of the second via hole 81 on the display backplane 100 is the third area 1003, and the other area of ​​the display backplane 100 is the fourth area 1004, that is, the display backplane 100 has the third area 1003 and the fourth area 1004, the third area 1003 is the area covered by the orthographic projection of the second via hole 81 on the display backplane 100, and the fourth area 1004 is the area not covered by the orthographic projection of the second via hole 81 on the display backplane 100. The third area 1003 is arranged in multiple intervals, and the fourth area 1004 is connected to form a piece. The orthographic projection of the second light shielding layer 8 on the display backplane 100 coincides with the fourth area 1004, that is, the orthographic projection of the second light shielding layer 8 on the display backplane 100 completely covers the fourth area 1004, so that the second light shielding layer 8 is basically arranged as a whole layer, and in addition to the second via hole 81, no other via holes and gaps are arranged on the second light shielding layer 8. Such an arrangement can ensure that the first shading layer 6 and the second shading layer 8 jointly form a black matrix, and the first shading layer 6 and the second shading layer 8 jointly block the space between adjacent sub-pixels 35, thereby avoiding light leakage caused by a gap between the orthographic projection of the first shading layer 6 on the display backplane 100 and the orthographic projection of the second shading layer 8 on the display backplane 100.

[0135] It should be noted that the display backplane 100 here may refer to the display area of ​​the display backplane 100 , and there is no limitation on the relationship between the non-display area around the display area and the orthographic projections of the first via 61 and the second via 81 on the display backplane 100 .

[0136] Of course, in some other exemplary embodiments of the present disclosure, reference Figure 8As shown, the orthographic projection of the first light shielding layer 6 on the display backplane 100 can overlap with the second area 1002, that is, the orthographic projection of the first light shielding layer 6 on the display backplane 100 completely covers the second area 1002, so that the first light shielding layer 6 is basically set as a whole layer, and except for the first via hole 61, no other via holes and gaps are set on the first light shielding layer 6. Such a setting can also ensure that the first light shielding layer 6 and the second light shielding layer 8 jointly form a black matrix, and the first light shielding layer 6 and the second light shielding layer 8 jointly block the space between adjacent sub-pixels 35, avoiding light leakage caused by a gap between the orthographic projection of the first light shielding layer 6 on the display backplane 100 and the orthographic projection of the second light shielding layer 8 on the display backplane 100.

[0137] In this case, refer to Fig. 9 As shown, the second light shielding layer 8 may include a plurality of second light shielding rings 82, and the second light shielding rings 82 are arranged one by one with the sub-pixels 35. The orthographic projection of the second light shielding ring 82 on the display backplane 100 is annular; and the orthographic projection of the second light shielding ring 82 on the display backplane 100 is adapted to the sub-pixel 35, for example, the sub-pixel 35 is arranged in a circular shape, and the orthographic projection of the second light shielding ring 82 on the display backplane 100 is arranged in a circular shape; the sub-pixel 35 is arranged in a rectangular shape, and the orthographic projection of the second light shielding ring 82 on the display backplane 100 is arranged in a rectangular shape; the sub-pixel 35 is arranged in an elliptical shape, and the orthographic projection of the second light shielding ring 82 on the display backplane 100 is arranged in an elliptical shape. The inner ring of the second light shielding ring 82 is a second via 81.

[0138] Moreover, a second gap 83 is provided between two adjacent second light shielding rings 82 , that is, there is no connection between the two adjacent second light shielding rings 82 .

[0139] Of course, in some other exemplary embodiments of the present disclosure, reference Fig.10 As shown, at least some of the two adjacent second light-shading rings 82 may be connected as a whole, that is, all of the two adjacent second light-shading rings 82 may be connected as a whole, or some of the two adjacent second light-shading rings 82 may be connected as a whole, while the other part of the two adjacent second light-shading rings 82 may not be connected as a whole; for example, when the distance between the two adjacent second light-shading rings 82 is relatively close, the two adjacent second light-shading rings 82 are connected as a whole; when the distance between the two adjacent second light-shading rings 82 is relatively far, a second gap 83 may be provided between the two adjacent second light-shading rings 82.

[0140] In addition, in some other example embodiments of the present disclosure, the orthographic projection of the first light shielding layer 6 on the display backplane 100 may overlap with the second area 1002, that is, the orthographic projection of the first light shielding layer 6 on the display backplane 100 completely covers the second area 1002, so that the first light shielding layer 6 is basically set as a whole layer, and in addition to the first via 61, no other vias and gaps are set on the first light shielding layer 6. Moreover, the orthographic projection of the second light shielding layer 8 on the display backplane 100 overlaps with the fourth area 1004, that is, the orthographic projection of the second light shielding layer 8 on the display backplane 100 completely covers the fourth area 1004, so that the second light shielding layer 8 is basically set as a whole layer, and in addition to the second via 81, no other vias and gaps are set on the second light shielding layer 8. That is, in this example embodiment, the first light shielding layer 6 and the second light shielding layer 8 are basically set as a whole layer, that is Figure 4 The second light shielding layer 8 and Figure 8 The structure of the first shading layer 6 in the display can be further ensured by the first shading layer 6 and the second shading layer 8 jointly forming a black matrix, and the space between adjacent sub-pixels 35 is jointly blocked by the first shading layer 6 and the second shading layer 8, thereby avoiding light leakage caused by a gap between the orthographic projection of the first shading layer 6 on the display backplane 100 and the orthographic projection of the second shading layer 8 on the display backplane 100.

[0141] Reference Fig.11 and Fig.12 As shown, the filter layer 7 may include a first filter portion 71, a second filter portion 72 and a third filter portion 73. The filtering colors of the first filter portion 71, the second filter portion 72 and the third filter portion 73 are different from each other. For example, the first filter portion 71 may be a red filter portion, the second filter portion 72 may be a green filter portion, and the third filter portion 73 may be a blue filter portion.

[0142] At least two of the first filter portion 71, the second filter portion 72 and the third filter portion 73 extend to the side of the light adjustment layer 9 away from the display back plate 100 and are stacked to form a second light shielding layer 8. Fig.11 As shown, the first filter portion 71, the second filter portion 72 and the third filter portion 73 may all extend to the side of the light adjustment layer 9 away from the display back plate 100 and are stacked to form a second light shielding layer 8; Fig.12As shown, the filter parts of two adjacent sub-pixels 35 may extend to the side of the light adjustment layer 9 away from the display backplane 100 and are stacked to form the second light shielding layer 8. For example, for the green sub-pixel 35G, one side is arranged adjacent to the red sub-pixel 35R, so the red filter part and the green filter part are stacked to form the second light shielding layer 8 on this side, that is, the first filter part 71 and the second filter part 72 are stacked to form the second light shielding layer 8 on this side; the other side is arranged adjacent to the blue sub-pixel 35B, so the green filter part and the blue filter part are stacked to form the second light shielding layer 8 on this side, that is, the second filter part 72 and the third filter part 73 are stacked to form the second light shielding layer 8 on this side. In this way, the mask process of forming the second light shielding layer 8 can be reduced once, the cost can be reduced, and the production efficiency can be improved.

[0143] The principle of at least two filter parts being stacked to form the second shading layer 8 is that one filter part can only transmit light of one color, for example, the red filter part can only transmit red light, the green filter part can only transmit green light, and the blue filter part can only transmit blue light. Therefore, after the green filter part and the blue filter part are stacked, the green light of the transparent green filter part cannot pass through the blue filter part, thereby achieving the effect of shading.

[0144] Moreover, when the first filter section 71, the second filter section 72 and the third filter section 73 all extend to the side of the light adjustment layer 9 away from the display back panel 100 and are stacked to form the second shading layer 8, the first filter section 71, the second filter section 72 and the third filter section 73 can absorb most of the ambient light incident on the display panel, reduce the emission of reflected light, and thus reduce the reflectivity, which is beneficial for the use of the display panel under strong ambient light.

[0145] Reference Fig.13 As shown, in some example embodiments of the present disclosure, the first filter portion 71, the second filter portion 72 and the third filter portion 73 extend to the side of the adjacent light adjustment layer 9 away from the display back panel 100, and do not overlap. For example, the first filter portion 71, the second filter portion 72 and the third filter portion 73 may extend to the side of the adjacent light adjustment layer 9 away from the display back panel 100, but a gap is provided between the adjacent first filter portion 71 and the second filter portion 72 or the first filter portion 71 and the second filter portion 72 are just connected, and a gap is provided between the adjacent second filter portion 72 and the third filter portion 73 or the second filter portion 72 and the third filter portion 73 are just connected.

[0146] In this case, at least part of the second light-shielding layer 8 is arranged on the side of the filter layer 7 away from the display back panel 100. For example, when a gap is arranged between the adjacent first filter section 71 and the second filter section 72, a part of the second light-shielding layer 8 is arranged in the gap, so that the part of the second light-shielding layer 8 is located on the side of the light adjustment layer 9 away from the display back panel 100, and the other part of the second light-shielding layer 8 is arranged on the side of the filter layer 7 away from the display back panel 100; when the adjacent first filter section 71 and the second filter section 72 are just connected, the second light-shielding layer 8 is arranged on the side of the filter layer 7 away from the display back panel 100. Similarly, when a gap is provided between the adjacent second filter section 72 and the third filter section 73, a portion of the second shading layer 8 is provided in the gap, so that the portion of the second shading layer 8 is located on the side of the light adjustment layer 9 away from the display back panel 100, and the other portion of the second shading layer 8 is provided on the side of the filter layer 7 away from the display back panel 100; when the adjacent second filter section 72 and the third filter section 73 are just connected, the second shading layer 8 is provided on the side of the filter layer 7 away from the display back panel 100.

[0147] Optionally, the orthographic projection of the second shading layer 8 on the display backplane 100 does not overlap with the orthographic projection of the recessed portion 91 on the display backplane 100, that is, the orthographic projection of the second shading layer 8 on the display backplane 100 is located within the orthographic projection of the top surface of the light regulating layer 9 away from the display backplane 100 on the display backplane 100. For example, the edge line of the orthographic projection of the second shading layer 8 on the display backplane 100 may coincide with the edge line of the orthographic projection of the top surface of the light regulating layer 9 away from the display backplane 100 on the display backplane 100, or the orthographic projection of the top surface of the light regulating layer 9 away from the display backplane 100 on the display backplane 100 covers the orthographic projection of the second shading layer 8 on the display backplane 100, and the area of ​​the orthographic projection of the top surface of the light regulating layer 9 away from the display backplane 100 on the display backplane 100 is larger than the area of ​​the orthographic projection of the second shading layer 8 on the display backplane 100.

[0148] It should be noted that, since a recessed portion 91 is provided on the light adjustment layer 9, the light adjustment layer 9 has a top surface and side walls, the top surface is connected to the side walls, the side walls are side walls of the recessed portion 91, and the top surface is a side of the light adjustment layer 9 away from the display back panel 100 and connected to the side walls; moreover, in the case where a recessed structure 92 is provided on the light adjustment layer 9, all surfaces of the recessed structure 92 also belong to the top surface of the light adjustment layer 9.

[0149] Such arrangement prevents the second shading layer 8 from blocking the side wall of the recessed portion 91 of the light adjustment layer 9 and the second shading layer 8 from blocking the total reflected light generated on the side wall of the recessed portion 91, thereby ensuring the light extraction efficiency of the display panel.

[0150] Reference Figure 14-17As shown, in some example embodiments of the present disclosure, a plurality of grooves 74 are provided on the filter layer 7, and the orthographic projections of the grooves 74 on the display backplane 100 are located within the sub-pixel 35. For example, the orthographic projections of the grooves 74 on the display backplane 100 may only occupy a portion of the sub-pixel 35.

[0151] In this case, the display panel may further include a planarization layer 10, which is disposed on the side of the filter layer 7 away from the display back panel 100. A portion of the planarization layer 10 fills the groove 74. The planarization layer 10 can make the side of the display panel away from the base substrate 1 smoother, thereby providing a smoother plane for covering with the cover plate.

[0152] Optionally, the refractive index of the filter layer 7 is greater than the refractive index of the planarization layer 10. The refractive index of the filter layer 7 has been described in detail above, so it will not be repeated here. The refractive index of the planarization layer 10 is greater than or equal to 1.4 and less than or equal to 1.55. For example, the refractive index of the planarization layer 10 can be 1.42, 1.45, 1.47, 1.5, 1.53, etc.

[0153] Reference Fig.14 As shown, the arrangement is such that the light emitted from the filter layer 7 to the planarization layer 10 is from a light-dense medium to a light-sparse medium, and the light is refracted at the side wall of the recessed portion 91, and the incident angle is smaller than the refraction angle, so that the inclined light is refracted in the direction of the normal viewing angle, thereby improving the light output efficiency at the normal viewing angle.

[0154] Moreover, the distance between the groove sidewall of the groove 74 and the display back plate 100 in the second direction Y increases as the distance from the edge line of the groove 74 in the first direction X decreases, so that the groove 74 forms a structure with an opening larger than the bottom.

[0155] It should be noted that in the present disclosure, the second direction Y is perpendicular to the display surface of the display backplane 100, that is, the second direction Y is perpendicular to the side of the display backplane 100 where the first shading layer 6 is set; the first direction X is parallel to the display surface of the display backplane 100, that is, the first direction X is parallel to the side of the display backplane 100 where the first shading layer 6 is set, and the first direction X is a plurality of directions, and only one is schematically drawn in the figure.

[0156] In some example embodiments of the present disclosure, reference is made to Fig.18As shown, the groove sidewall of the groove 74 may include a curved surface; the groove sidewall of the groove 74 may include a first portion 741, a second portion 742, and a third portion 743 which are smoothly connected in sequence, the first portion 741 is closer to the display back plate 100 than the third portion 743, the second portion 742 is set as an inclined surface, the first portion 741 and the third portion 743 are set as arc surfaces, the first portion 741 may be set as a concave shape, and the third portion 743 may be set as a protruding shape; specifically, the portion of the groove sidewall of the groove 74 close to the display back plate 100 may be an arc surface, the middle portion of the groove sidewall of the groove 74 may be set as an inclined surface, and the portion of the groove sidewall of the groove 74 away from the display back plate 100 may be an arc surface. In other exemplary embodiments of the present disclosure, the groove sidewall of the groove 74 may be set as an inclined surface, and the groove sidewall of the groove 74 may only include the first portion 741 and the third portion 743 which are smoothly connected, but the groove sidewall of the groove 74 is generally set at an inclination. The groove 74 of this structure is easy to prepare, reducing the difficulty of the process; and it allows the planarization layer 10 to completely fill the groove 74, avoiding the generation of gaps due to the inability of the planarization layer 10 to completely fill the groove 74. The gaps will cause irregular scattering of light, thereby avoiding affecting the strength and display effect of the display panel.

[0157] Based on the same inventive concept, an exemplary embodiment of the present disclosure provides a display device, which may include any one of the display panels described above. The specific structure of the display panel has been described in detail above, so it will not be repeated here.

[0158] The specific type of the display device is not particularly limited, and any type of display device commonly used in the field can be used, such as mobile devices such as mobile phones, wearable devices such as watches, VR devices, etc. Technical personnel in this field can make corresponding choices based on the specific purpose of the display device, which will not be repeated here.

[0159] It should be noted that, in addition to the display panel, the display device also includes other necessary components and components, such as a housing, a circuit board, a power cord, etc. Taking the display as an example, technical personnel in this field can make corresponding supplements based on the specific usage requirements of the display device, which will not be repeated here.

[0160] Compared with the prior art, the beneficial effects of the display device provided by the exemplary embodiment of the present invention are the same as the beneficial effects of the display panel provided by the above exemplary embodiment, which will not be described in detail here.

[0161] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A display panel, characterized in that: include: A display backplane, comprising a plurality of sub-pixels, wherein the display backplane has a first area and a second area; a first light shielding layer, arranged on the light-emitting side of the display backplane, wherein a plurality of first via holes are arranged on the first light shielding layer, wherein the sub-pixel is located within an orthographic projection of the first via hole on the display backplane, wherein the orthographic projection of the first via hole on the display backplane is the first area, and other areas of the display backplane are the second area; A filter layer is provided on a side of the first light shielding layer away from the display backplane, and the sub-pixel is located within the orthographic projection of the filter layer on the display backplane; A second light-shielding layer is arranged on a side of the first light-shielding layer away from the display backplane, and a plurality of second via holes are arranged on the second light-shielding layer. The orthographic projection of the second light-shielding layer on the display backplane overlaps with the orthographic projection of the first light-shielding layer on the display backplane, and they jointly cover the second area, the orthographic projection of the second via hole on the display backplane covers the orthographic projection of the first via hole on the display backplane, and the area of ​​the orthographic projection of the second via hole on the display backplane is larger than the area of ​​the orthographic projection of the first via hole on the display backplane.

2. The display panel according to claim 1, characterized in that: The display panel further includes: A light regulating layer covers the first shading layer, the second shading layer is arranged on the side of the light regulating layer away from the display backplane, a plurality of recessed portions are arranged on the light regulating layer, the sub-pixels are located within the orthographic projections of the recessed portions on the display backplane, at least a portion of the filter layer is arranged in the recessed portions, and the refractive index of the filter layer is greater than the refractive index of the light regulating layer.

3. The display panel according to claim 2, characterized in that: The first light-shielding layer includes a plurality of first light-shielding rings, the orthographic projection of the first light-shielding rings on the display backplane is a ring, and the inner ring of the first light-shielding rings is the first via hole.

4. The display panel according to claim 3, characterized in that: A first gap is provided between two adjacent first shading rings, so that a concave structure is provided on the light adjustment layer, and the orthographic projection of the concave structure on the display backplane is located within the orthographic projection of the first gap on the display backplane.

5. The display panel according to claim 4, characterized in that: At least a portion of the second light shielding layer is disposed in the recessed structure, and an orthographic projection of the first gap on the display backplane is located within an orthographic projection of the second light shielding layer on the display backplane.

6. The display panel according to claim 5, characterized in that: The distance between the second light shielding layer and the display backplane is a first distance, the distance between the filter layer and the display backplane is a second distance, and the first distance is less than or equal to the second distance.

7. The display panel according to claim 3, characterized in that: At least some of the adjacent two first light-shielding rings are connected as one.

8. The display panel according to claim 3, characterized in that: The orthographic projection of the second via hole on the display backplane is a third area, the other area of ​​the display backplane is a fourth area, and the orthographic projection of the second light shielding layer on the display backplane coincides with the fourth area.

9. The display panel according to claim 2, characterized in that: The orthographic projection of the first light shielding layer on the display backplane coincides with the second area.

10. The display panel according to claim 9, characterized in that: The second light shielding layer includes a plurality of second light shielding rings, the orthographic projection of the second light shielding ring on the display backplane is a ring, and the inner ring of the second light shielding ring is the second via hole.

11. The display panel according to claim 10, characterized in that: A second gap is provided between two adjacent second light-shielding rings, or at least part of two adjacent second light-shielding rings are connected as one.

12. The display panel according to claim 2, characterized in that: The orthographic projection of the first shading layer on the display backplane coincides with the second area; and the orthographic projection of the second via on the display backplane is the third area, the other areas of the display backplane are the fourth area, and the orthographic projection of the second shading layer on the display backplane coincides with the fourth area.

13. The display panel according to claim 2, characterized in that: The filter layer includes a first filter portion, a second filter portion and a third filter portion, the filter colors of the first filter portion, the second filter portion and the third filter portion are different, and at least two of the first filter portion, the second filter portion and the third filter portion extend to the side of the light adjustment layer away from the display back panel and are stacked to form the second shading layer.

14. The display panel according to claim 2, characterized in that: The filter layer includes a first filter portion, a second filter portion and a third filter portion, wherein the first filter portion, the second filter portion and the third filter portion extend to a side of the adjacent light adjustment layer away from the display back panel without overlapping; at least a portion of the second shading layer is disposed on a side of the filter layer away from the display back panel.

15. The display panel according to claim 2, characterized in that: The orthographic projection of the second light shielding layer on the display backplane does not overlap with the orthographic projection of the recessed portion on the display backplane.

16. The display panel according to any one of claims 1 to 15, characterized in that: The filter layer is provided with a plurality of grooves, and the orthographic projections of the grooves on the display backplane are located within the sub-pixels. The display panel further includes: The planarization layer is arranged on a side of the filter layer away from the display backplane, and a part of the planarization layer fills the groove.

17. The display panel according to claim 16, characterized in that: The refractive index of the filter layer is greater than the refractive index of the planarization layer.

18. The display panel according to claim 16, characterized in that: The distance between the groove sidewall of the groove and the display backplane in the second direction increases as the distance from the edge line of the groove in the first direction decreases. The first direction is parallel to the display backplane, and the second direction is perpendicular to the display backplane.

19. The display panel according to any one of claims 2 to 15, characterized in that: The recessed portion is a through hole arranged on the light adjustment layer.

20. A display device, characterized in that: include: The display panel according to any one of claims 1 to 19.

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