Display panel and display device

Abstract

The present application relates to the technical field of display and provides a display panel and a display device. The display panel comprises a first display area and a second display area; the first display area and the second display area each comprise a driving substrate and a plurality of sub-pixels arranged on the driving substrate in an array; and each sub-pixel comprises a first electrode, an optical adjustment layer, a light-emitting functional layer and a second electrode which are sequentially arranged, wherein for the sub-pixels of a same color, formula (I). The display panel is applicable to the preparation of high-quality display devices.

Description

Display panel, display device Technical Field

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

[0002] With the rapid development of various display technologies, customer requirements for display panel size are becoming increasingly stringent, and display product sizes are also increasing. To reduce production costs, the mask size required for display panel production remains relatively small (i.e., the effective exposure area on the mask is smaller than the display area of ​​the display). To obtain larger display panels, a mask splicing exposure method is used to produce larger display panels.

[0003] However, in the actual preparation process, the spliced ​​exposed area may be repeatedly exposed, so that the exposure amount received by the spliced ​​exposed area is inconsistent with the exposure amount received by the non-spliced ​​exposed area. Under the superposition of the various film layers of the display panel, the display panel is very likely to have uneven brightness in the spliced ​​exposed area, thereby reducing the display effect.

[0004] Summary of the Invention

[0005] The embodiments of this application adopt the following technical solutions:

[0006] In a first aspect, embodiments of the present application provide a display panel comprising: a first display area and a second display area; the first display area and the second display area each comprising a drive substrate and a plurality of pixel units arranged in an array on the drive substrate, the pixel units comprising a plurality of sub-pixels, the sub-pixels comprising:

[0007] a first electrode configured to reflect light;

[0008] an optical adjustment layer, located on one side of the first electrode;

[0009] a light-emitting functional layer, located on a side of the optical adjustment layer away from the first electrode;

[0010] a second electrode, covering the light-emitting functional layer and configured to transmit and reflect light;

[0011] For the sub-pixels of the same color,

[0012] Wherein, d1 is the distance between the first electrode and the second electrode of the sub-pixel in the first display area, N1 is the effective refractive index between the first electrode and the second electrode of the sub-pixel in the first display area, n is a positive integer, and λ is the peak wavelength of the color; d2 is the distance between the first electrode and the second electrode of the sub-pixel in the second display area, and N2 is the effective refractive index between the first electrode and the second electrode of the sub-pixel in the second display area.

[0013] In at least one display panel provided in the present application, in the second display area, for the sub-pixels of the same color,

[0014] In at least one display panel provided in the present application, for the sub-pixels of the same color, the effective refractive index between the first electrode and the second electrode of the sub-pixel in the first display area is equal to the effective refractive index between the first electrode and the second electrode of the sub-pixel in the second display area, and the distance between the first electrode and the second electrode of the sub-pixel in the first display area is not equal to the distance between the first electrode and the second electrode of the sub-pixel in the second display area.

[0015] In at least one display panel provided in the present application, for the sub-pixels of the same color, the distance between the first electrode and the second electrode of the sub-pixel in the first display area is equal to the distance between the first electrode and the second electrode of the sub-pixel in the second display area; the effective refractive index between the first electrode and the second electrode of the sub-pixel in the first display area is not equal to the effective refractive index between the first electrode and the second electrode of the sub-pixel in the second display area.

[0016] In the at least one display panel provided in the present application, the first display area divides the second display area into a discontinuous third display sub-area and a fourth display sub-area;

[0017] The first display area includes a middle area and edge areas located on both sides of the middle area, and the edge areas are arranged adjacent to the third display sub-area or the fourth display sub-area;

[0018] In the first display area, along the direction from the middle area to the edge area, for the sub-pixels with the same color, Gradually increase or decrease.

[0019] In at least one display panel provided in the present application, along a direction from the first display area to the third display sub-area, the number of the sub-pixels arranged in the first display area is less than or equal to 10.

[0020] In at least one display panel provided herein, the optical adjustment layer includes a first optical adjustment layer and a second optical adjustment layer, the first optical adjustment layer is located in the first display area, and the second optical adjustment layer is located in the second display area. For some sub-pixels of the same color, the first optical adjustment layer and the second optical adjustment layer have different thicknesses.

[0021] In at least one display panel provided in the present application, a reflectivity of a portion of the driving substrate located in the first display area is smaller than a reflectivity of a portion of the driving substrate located in the second display area.

[0022] In the at least one display panel provided in the present application, an aperture ratio of a portion of the display panel located in the first display area is greater than or equal to an aperture ratio of a portion of the display panel located in the second display area.

[0023] In at least one display panel provided in the present application, the sub-pixel includes an auxiliary electrode, and the auxiliary electrode is located between the first electrode and the optical adjustment layer;

[0024] The transmittance of a portion of the auxiliary electrode located in the first display area is less than or equal to the transmittance of a portion of the auxiliary electrode located in the second display area.

[0025] In the at least one display panel provided by the present application, for the sub-pixels of the same color, the refractive index of the first optical adjustment layer is less than or equal to the refractive index of the second optical adjustment layer.

[0026] In the at least one display panel provided by the present application, the thickness of the first optical adjustment layer or the second optical adjustment layer is zero.

[0027] In at least one display panel provided in the present application, the pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel, and the second optical adjustment layer includes a first optical adjustment pattern, a second optical adjustment pattern, and a third optical adjustment pattern;

[0028] In the second display area, the first optical adjustment pattern is located between the light-emitting functional layer of the first sub-pixel and the first electrode, the second optical adjustment pattern is located between the light-emitting functional layer of the second sub-pixel and the first electrode, and the third optical adjustment pattern is located between the light-emitting functional layer of the third sub-pixel and the first electrode;

[0029] Wherein, thicknesses of the first optical adjustment pattern, the second optical adjustment pattern, and the third optical adjustment pattern are at least partially different.

[0030] In at least one display panel provided by the present application, the refractive indices of the first optical adjustment pattern, the second optical adjustment pattern, and the third optical adjustment pattern are at least partially different.

[0031] In at least one display panel provided in the present application, the first optical adjustment pattern, the second optical adjustment pattern, and the third optical adjustment pattern each include at least a conductive sublayer; the conductive sublayer is electrically connected to the first electrode, and a gap exists between the conductive sublayers in two adjacent sub-pixels;

[0032] At least one of the first optical adjustment pattern, the second optical adjustment pattern, and the third optical adjustment pattern further includes an inorganic sublayer, and the inorganic sublayer is located between the conductive sublayer and the first electrode.

[0033] In the at least one display panel provided in the present application, in the second display area, along a direction perpendicular to the light-emitting functional layer, the distance between the first electrode and the second electrode in the first sub-pixel is a first distance; the distance between the first electrode and the second electrode in the second sub-pixel is a second distance; and the distance between the first electrode and the second electrode in the third sub-pixel is a third distance.

[0034] The first distance, the second distance, and the third distance are at least partially unequal.

[0035] In at least one display panel provided in the present application, the first optical adjustment pattern includes a first inorganic sublayer, a second inorganic sublayer, a third inorganic sublayer, and the conductive sublayer sequentially disposed on the first electrode;

[0036] In the first sub-pixel of the second display area, the first optical adjustment pattern further includes a first through hole, which penetrates the first inorganic sublayer, the second inorganic sublayer and the third inorganic sublayer, and the conductive sublayer is electrically connected to the first electrode through the first through hole.

[0037] In at least one display panel provided in the present application, the second optical adjustment pattern includes the first inorganic sublayer, the second inorganic sublayer, and the conductive sublayer sequentially disposed on the first electrode;

[0038] In the second sub-pixel of the second display area, the second optical pattern further includes a second through hole, the second through hole penetrates the first inorganic sub-layer and the second inorganic sub-layer, and the conductive sub-layer is electrically connected to the first electrode through the second through hole.

[0039] In at least one display panel provided in the present application, the third optical adjustment pattern includes the conductive sublayer disposed on the first electrode, and in the third sub-pixel of the second display area, the conductive sublayer is in contact with the first electrode.

[0040] In at least one display panel provided in the present application, the refractive indices of the first inorganic sublayer, the second inorganic sublayer, the third inorganic sublayer, and the conductive sublayer are all different.

[0041] In at least one display panel provided by the present application, the refractive indices of the first inorganic sublayer, the second inorganic sublayer, the third inorganic sublayer, and the conductive sublayer gradually increase in a direction away from the first electrode.

[0042] In at least one display panel provided in the present application, the material of the first inorganic sublayer includes silicon oxide, the material of the second inorganic sublayer includes aluminum oxide, the material of the third inorganic sublayer includes silicon nitride, and the material of the conductive sublayer includes indium tin oxide or indium zinc oxide.

[0043] In at least one display panel provided in the present application, the first optical adjustment layer includes a fourth optical adjustment pattern, a fifth optical adjustment pattern, and a sixth optical adjustment pattern;

[0044] In the first display area, the fourth optical adjustment pattern is located between the light-emitting functional layer of the first sub-pixel and the first electrode, the fifth optical adjustment pattern is located between the light-emitting functional layer of the second sub-pixel and the first electrode, and the sixth optical adjustment pattern is located between the light-emitting functional layer of the third sub-pixel and the first electrode;

[0045] The fourth optical adjustment pattern, the fifth optical adjustment pattern, and the sixth optical adjustment pattern have substantially the same thickness.

[0046] In the at least one display panel provided in the present application, the fourth optical adjustment pattern, the fifth optical adjustment pattern, and the sixth optical adjustment pattern are made of the same material, and are all light-transmitting conductive materials;

[0047] In the first sub-pixel of the first display area, the fourth optical adjustment pattern is in contact with the first electrode; in the second sub-pixel, the fifth optical adjustment pattern is in contact with the first electrode; in the third sub-pixel, the sixth optical adjustment pattern is in contact with the first electrode.

[0048] In at least one display panel provided in the present application, the auxiliary electrode includes a first auxiliary sub-electrode and a second auxiliary sub-electrode, the first auxiliary sub-electrode is in contact with the first electrode, and the second auxiliary sub-electrode is in contact with the optical adjustment layer; the hardness of the material of the first auxiliary sub-electrode is greater than the hardness of the material of the first electrode.

[0049] In at least one display panel provided herein, the subpixel further includes an auxiliary conductive layer and a protective layer, the auxiliary conductive layer including a third auxiliary sub-electrode and a fourth auxiliary sub-electrode, the third auxiliary sub-electrode being located between the first electrode and the fourth auxiliary sub-electrode, and the fourth auxiliary sub-electrode being in contact with and conductive to the drive substrate; the protective layer covering a side surface of the first electrode;

[0050] The material of the third auxiliary sub-electrode is the same as that of the first auxiliary sub-electrode.

[0051] In at least one display panel provided in the present application, the drive substrate includes a plurality of metal layers, each of the metal layers includes a plurality of conductive patterns; the first display area includes a first region, the second display area includes a second region, and the first region and the second region have the same shape and area;

[0052] For at least one of the metal layers, an area of ​​a portion of the conductive pattern located in the first region is smaller than an area of ​​a portion of the conductive pattern located in the second region.

[0053] In at least one display panel provided in the present application, the display panel further includes a filling layer and a pixel defining layer, the filling layer being disposed between the first electrodes of two adjacent sub-pixels, and the optical adjustment layer at least partially covering the filling layer; the pixel defining layer being located on a side of all the optical adjustment layers away from the first electrodes;

[0054] The pixel defining layer includes a plurality of first grooves arranged in an array, and at least a portion of the light-emitting functional layer is disposed in the first grooves; an area enclosed by an orthographic projection of an outer contour of the first groove on the driving substrate falls within an orthographic projection of the optical adjustment layer on the driving substrate.

[0055] In at least one display panel provided in the present application, for the first grooves of the light-emitting functional layer having the same color as the first grooves, the size of the planar figure of the portion of the first groove located in the first display area is greater than or equal to the size of the planar figure of the portion of the first groove located in the second display area.

[0056] In at least one display panel provided in the present application, the pixel defining layer includes a plurality of second grooves, the second grooves are arranged between two adjacent first grooves, and the depth of the second grooves along the direction perpendicular to the driving substrate is less than or equal to the depth of the first grooves along the direction perpendicular to the driving substrate.

[0057] In at least one display panel provided in the present application, the light-emitting functional layer includes a light-emitting sublayer, and the second groove is configured to prevent the light-emitting sublayers of two adjacent sub-pixels from mixing colors.

[0058] In at least one display panel provided in the present application, the light-emitting functional layer includes at least two light-emitting sublayers, a charge generation layer is provided between two adjacent light-emitting sublayers, and the second groove is configured to separate the charge generation layer of two adjacent sub-pixels.

[0059] In at least one display panel provided in the present application, the pixel defining layer includes a first sublayer, a second sublayer, and a third sublayer arranged in sequence along a direction away from the first electrode; the second groove includes an opening and a bottom, and the size of the figure enclosed by the edge of the opening is less than or equal to the size of the shape enclosed by the outer contour of the bottom.

[0060] In the at least one display panel provided in the present application, the display panel further includes an encapsulation layer, a color filter layer, and a lens layer, wherein the encapsulation layer covers all of the second electrodes, the encapsulation layer includes at least two encapsulation sublayers, and the color filter layer is located between the two encapsulation sublayers;

[0061] The lens layer includes a plurality of lens structures, and the lens structures are arranged in the first display area and / or the second display area. The lens structures are located on a side of the color filter layer away from the first electrode.

[0062] In a second aspect, an embodiment of the present application provides a display device comprising a display panel as described in any one of the first aspects.

[0063] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0065] FIG1 is a schematic diagram of an abnormal display screen in a related art provided by an embodiment of the present application;

[0066] FIG2A is an illustration of an exposure method for splicing exposure provided in an embodiment of the present application;

[0067] FIG2B is a schematic diagram showing the distribution positions of the first display area and the second display area obtained by using the splicing exposure method shown in FIG2A ;

[0068] 3 is a structural comparison diagram showing line width differences between a portion of a signal line located in a first display area and a portion of the same signal line located in a second display area in one metal layer of a driving substrate;

[0069] FIG4 , FIG7 - FIG11 , FIG15 - FIG16 , and FIG18 are schematic structural diagrams of portions of nine display panels located in the second display area provided by embodiments of the present application;

[0070] 5, 6, 12 to 14, 17, and 19 are schematic structural diagrams of portions of seven display panels located in the first display area provided by embodiments of the present application;

[0071] FIG20 is a schematic diagram of a top view of a display panel provided in an embodiment of the present application;

[0072] FIG21 is a graph showing a trend of a difference in line width between a portion of a signal line located in a first display area and a portion of the same signal line located in a second display area on a driving substrate provided by an embodiment of the present application as a function of exposure;

[0073] 22A-26B are schematic diagrams of intermediate structures of a display panel manufacturing process provided in an embodiment of the present application. Specific embodiments

[0074] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0075] In the embodiments of the present application, words such as "first", "second", "third", and "fourth" are used to distinguish between identical or similar items with basically the same functions and effects. This is only for the purpose of clearly describing the technical solutions of the embodiments of the present application, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0076] In the embodiments of the present application, the terms "upper" and "lower" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0077] Throughout the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of the present application. Schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be included in any one or more embodiments or examples in any suitable manner.

[0078] In the embodiments of the present application, “a plurality of” means two or more, and “at least one” means one or more, unless otherwise clearly defined.

[0079] The features "parallel," "perpendicular," and "identical" used in the embodiments of the present application include features such as "parallel," "perpendicular," and "identical" in the strict sense, as well as "approximately parallel," "approximately perpendicular," and "approximately identical" that include certain tolerances, taking into account the measurement and tolerances associated with the measurement of a particular quantity (e.g., limitations of the measurement system), and represent within an acceptable range of deviation for a particular value determined by a person of ordinary skill in the art. For example, "approximately" can mean within one or more standard deviations, or within 10% or 5% of the stated value.

[0080] Unless the context requires otherwise, throughout the specification and claims, the term "comprising" is to be construed in an open, inclusive sense, that is, meaning "including, but not limited to."

[0081] In the embodiments of this application, "same layer" refers to the relationship between multiple film layers formed from the same material after the same step (e.g., a one-step patterning process). "Same layer" here does not always mean that the thickness of multiple film layers is the same or the height of multiple film layers in the cross-sectional view is the same. Polygons in this specification are not strictly defined and can be approximate triangles, parallelograms, trapezoids, pentagons, or hexagons, etc., and some small deformations due to tolerances may exist.

[0082] In order to reduce production costs, the size of the mask required for the production of display panels is still relatively small (that is, the area of ​​the effective exposure area on the mask is smaller than the display area of ​​the display). In order to obtain a display panel of larger size, a mask splicing exposure method is used to prepare a display panel of larger size. For example, as shown in FIG2A , the exposure areas of the exposure lens in the exposure machine on the driving substrate 100 correspond to the Shot1 area or the Shot2 area respectively. In the actual preparation process, the spliced ​​exposure area may be repeatedly exposed. For example, the area where the Shot1 area and the Shot2 area overlap as shown in FIG2B is the spliced ​​exposure area. The exposure amount received by the spliced ​​exposure area is inconsistent with the exposure amount received by the non-splicing exposure area. Under the superposition of the various film layers of the display panel, the display panel is very likely to have uneven brightness problems in the spliced ​​exposure area, such as the splicing Mura shown in the dotted circle in FIG1 , which reduces the display effect.

[0083] Based on this, an embodiment of the present application provides a display panel, as shown in FIG2B , including: a first display area AA1 and a second display area AA2; the first display area AA1 and the second display area AA2 each include a driving substrate 100 and a plurality of pixel units arranged in an array on the driving substrate 100, wherein the pixel unit includes a plurality of sub-pixels. As shown in FIG4 , FIG5 , FIG6 , FIG14 , FIG15 , FIG16 , and FIG17 , the sub-pixels include:

[0084] A first electrode 1 is configured to reflect light;

[0085] an optical adjustment layer 3 , located on one side of the first electrode 1 ;

[0086] The light-emitting functional layer 5 is located on a side of the optical adjustment layer 3 away from the first electrode 1;

[0087] The second electrode 6 covers the light-emitting functional layer 5 and is configured to transmit and reflect light;

[0088] in,

[0089] For the sub-pixels of the same color,

[0090] Wherein, d1 is the distance between the first electrode 1 and the second electrode 6 of the sub-pixel in the first display area AA1, N1 is the effective refractive index between the first electrode 1 and the second electrode 6 of the sub-pixel in the first display area AA1, n is a positive integer, and λ is the peak wavelength of the color; d2 is the distance between the first electrode 1 and the second electrode 2 of the sub-pixel in the second display area AA2, and N2 is the effective refractive index between the first electrode 1 and the second electrode 2 of the sub-pixel in the second display area AA2.

[0091] In an exemplary embodiment, one of the first display area AA1 and the second display area AA2 is an area corresponding to the splicing exposure in the display panel, and the other is an area corresponding to the normal exposure.

[0092] The first display area AA1 and the second display area AA2 are both areas for displaying images.

[0093] In an exemplary embodiment, the display panel may be an organic light emitting diode (OLED) display panel.

[0094] The positional relationship between the first display area AA1 and the second display area AA2 is not limited here, and is specifically related to the splicing exposure method.

[0095] Exemplarily, the area corresponding to the splicing exposure is located between two adjacent areas corresponding to the normal exposure; for example, the first display area AA1 is the area corresponding to the splicing exposure, the second display area AA2 is the area corresponding to the normal exposure, and the first display area AA1 is located between two adjacent second display areas AA2.

[0096] The size relationship between the first display area AA1 and the second display area AA2 is not limited here, and is specifically related to the splicing exposure method and the size of the display panel.

[0097] For example, taking the first display area AA1 as the area corresponding to the splicing exposure and the second display area AA2 as the area corresponding to the normal exposure as an example, the area of ​​the first display area AA1 is much smaller than that of the second display area AA2.

[0098] The specific structure of the driving circuit in the driving substrate 100 is not limited here and can be determined according to the type of product.

[0099] The substrate in the driving substrate 100 is not limited here.

[0100] In some examples, the substrate may be made of one or more materials selected from the group consisting of glass, polyimide, polycarbonate, polyacrylate, polyetherimide, and polyethersulfone, and this embodiment includes but is not limited thereto.

[0101] In some examples, the substrate may be a rigid substrate or a flexible substrate;

[0102] When the substrate is a flexible substrate, the substrate may include a single layer of flexible material; or, the substrate 100 may include a first flexible material layer, a first inorganic non-metallic material layer, a second flexible material layer, and a second inorganic non-metallic material layer stacked in sequence. The first flexible material layer and the second flexible material layer are made of polyimide (PI), polyethylene terephthalate (PET), or a surface-treated polymer soft film. The first inorganic non-metallic material layer and the second inorganic non-metallic material layer are made of silicon nitride (SiNx) or silicon oxide (SiOx), etc., to improve the water and oxygen resistance of the substrate. The first inorganic non-metallic material layer and the second inorganic non-metallic material layer are also referred to as barrier layers.

[0103] When the substrate is a rigid substrate, the substrate may include a glass substrate or a silicon material substrate.

[0104] When the substrate of the driving substrate 100 is a silicon material substrate, the driving substrate 100 is a silicon-based driving substrate.

[0105] In an exemplary embodiment, each sub-pixel includes a light-emitting device, which includes a light-emitting functional layer 5 and a first electrode 1 and a second electrode 6 located on both sides of the light-emitting functional layer 5; wherein the first electrode 1 is located between the light-emitting functional layer 5 and the driving substrate 100, and at least a portion of the second electrode 6 is located on the side of the light-emitting functional layer 5 away from the driving substrate 100.

[0106] In an exemplary embodiment, the light-emitting functional layer 5 includes multiple sub-functional layers. It should be noted that the light-emitting functional layer 5 does not only include the film layer that directly emits light, but also includes functional film layers for auxiliary light emission, such as: hole transport layer, electron transport layer, etc.

[0107] In some examples, the first electrode 1 can be made of a metal material, such as any one or more of magnesium (Mg), silver (Ag), copper (Cu), aluminum (Al), titanium (Ti) and molybdenum (Mo), or an alloy material of the above metals, such as aluminum neodymium alloy (AlNd) or molybdenum niobium alloy (MoNb).

[0108] In some examples, the second electrode 6 can be made of any one or more of magnesium (Mg), silver (Ag), and aluminum (Al), or an alloy made of any one or more of the above metals, or a transparent conductive material.

[0109] For example, the first electrode 1 may be an anode, and the second electrode 2 may be a cathode; multiple sub-pixels may share the second electrode 2. For example, the cathode may be formed of a material with high conductivity and a low work function, such as a metal material. For example, the anode may be formed of a transparent conductive material with a high work function.

[0110] The optical adjustment layer 3 at least includes a light-transmitting conductive material, such as indium tin oxide or indium zinc oxide.

[0111] In some embodiments, the optical adjustment layer 3 further includes a non-conductive material.

[0112] Here, there is no limitation on whether the thickness of the optical adjustment layer 3 of different sub-pixels in the same pixel unit is the same;

[0113] Exemplarily, the thicknesses of the optical adjustment layers 3 of different sub-pixels in the same pixel unit are partially the same.

[0114] Exemplarily, the thicknesses of the optical adjustment layers 3 of different sub-pixels in the same pixel unit are all the same.

[0115] Illustratively, the thicknesses of the optical adjustment layer 3 of different sub-pixels in the same pixel unit are different.

[0116] In some embodiments, the display colors of the sub-pixels may be the same, for example, all sub-pixels display blue, or for another example, all sub-pixels display white;

[0117] In some other embodiments, the display panel may include multiple sub-pixels displaying different colors. For example, the display panel may include three sub-pixels displaying red, blue and green at the same time; for another example, the display panel may include four sub-pixels displaying red, blue, green and white at the same time.

[0118] The different thicknesses of at least part of the optical adjustment layer 3 include but are not limited to the following:

[0119] The first type is that for sub-pixels of the same color, the thickness of some optical adjustment layers 3 in each sub-pixel is different, and the thickness of some optical adjustment layers 3 is the same;

[0120] The second type is that for sub-pixels of the same color, the thickness of the optical adjustment layer 3 in each sub-pixel is different;

[0121] The third type is that for sub-pixels of different colors, the thickness of part of the optical adjustment layer 3 in each sub-pixel is different, and the thickness of part of the optical adjustment layer 3 is the same;

[0122] Fourth, for sub-pixels of different colors, the thickness of the optical adjustment layer 3 in each sub-pixel is different;

[0123] Fifth, for sub-pixels of different colors, the thickness of a portion of the optical adjustment layer 3 in each sub-pixel is the same.

[0124] The aperture ratio of the portion of the display panel located in the first display area AA1 is different from the aperture ratio of the portion of the display panel located in the second display area AA2, including the following situations: the aperture ratio of the portion of the display panel located in the first display area AA1 is greater than the aperture ratio of the portion of the display panel located in the second display area AA2; or the aperture ratio of the portion of the display panel located in the first display area AA1 is less than the aperture ratio of the portion of the display panel located in the second display area AA2;

[0125] The aperture ratio refers to the ratio of the effective light-transmitting area in a display panel to the area of ​​the total display area. Here, the aperture ratio of the first display area A1 refers to the ratio of the effective light-transmitting area in the first display area A1 to the area of ​​the first display area A1; the aperture ratio of the second display area A2 refers to the ratio of the effective light-transmitting area in the second display area A2 to the area of ​​the second display area A2. The effective light-transmitting area is the area that actually transmits display light.

[0126] In the embodiment of the present application, for sub-pixels of the same color, the sub-pixels in the first display area AA1 and the sub-pixels in the second display area AA2 have microcavity effects of varying strengths. The brightness difference between the first display area AA1 and the second display area AA2 is adjusted by varying degrees of microcavity effects, thereby making the brightness of the first display area AA1 and the second display area AA2 of the display panel tend to be consistent, thereby improving the display effect.

[0127] The effective cavity length of the microcavity effect is mainly determined by the distance d between the first electrode 1 and the second electrode 6 and the effective refractive index N between the first electrode 1 and the second electrode 6 .

[0128] For sub-pixels of the same color, in the first display area AA1, the effective cavity length of the microcavity effect formed in the sub-pixel is In the second display area AA2, the effective cavity length of the microcavity effect formed in the sub-pixel is Among them, the effective cavity length can also be called optical distance.

[0129] Since the distance between the first electrode 1 and the second electrode 6 in a sub-pixel is primarily determined by the thickness of the optical adjustment layer 3 and the thickness of the light-emitting functional layer 5 , the thickness of the light-emitting functional layer 5 is generally the same for sub-pixels of the same color. According to the above formula, the main factors affecting the effective cavity length of the microcavity effect are the thickness of the optical adjustment layer 3 and the effective refractive index between the first electrode 1 and the second electrode 6 .

[0130] In the embodiment of the present application, when the first display area AA1 is a region prepared by the splicing exposure process, the brightness of the first display area AA1 is relatively high. By setting the sub-pixels of the same color, That is, the effective cavity length of the sub-pixel located in the first display area AA1 is set to be greater than the effective cavity length of the sub-pixel located in the second display area AA2. In this way, the microcavity effect of the sub-pixel located in the first display area AA1 can be a weak microcavity effect, and the microcavity effect of the sub-pixel located in the second display area AA2 can be a strong microcavity effect, thereby greatly improving the display brightness of the second display area AA2, thereby achieving the brightness adjustment of different areas by adjusting the strength of the microcavity effect, so as to achieve a balance between the influence of the microcavity effect on the brightness and the influence of the aperture ratio on the brightness, and ultimately making the display brightness of the portion of the display panel located in the first display area AA1 consistent with the display brightness of the portion of the display panel located in the second display area AA2, thereby improving the brightness uniformity of the display panel and improving the display effect.

[0131] It should be noted that when the first display area AA1 is a region prepared using a splicing exposure process and the second display area AA2 is a region prepared using a normal exposure process, the aperture ratio of the first display area AA1 is greater than that of the second display area AA2.

[0132] In at least one display panel provided in the present application, in the second display area AA2, for sub-pixels of the same color,

[0133] In some embodiments of the present application, when the sub-pixels included in the display panel are all the same color, the effective cavity length of the optical microcavity formed in the sub-pixels in the second display area AA2 can be set to zero, so that the microcavity effect of the sub-pixels in the second display area AA2 is maximized as much as possible, thereby improving the display brightness of the sub-pixels in the second display area AA2, thereby improving the brightness uniformity of the display panel and enhancing the display effect. It should be noted that when the sub-pixels included in the display panel are all the same color, the display panel can be used as a backlight module, and the light source provided by the backlight module has very good brightness uniformity.

[0134] In some embodiments of the present application, when the display panel includes sub-pixels of different colors at the same time, for example, when it includes red, green, and blue sub-pixels at the same time, for sub-pixels of the same color, the effective cavity length of the optical microcavity formed in the sub-pixels in the second display area AA2 can be set to zero, so that the microcavity effect of the sub-pixels in the second display area AA2 is maximized as much as possible, thereby improving the display brightness of the sub-pixels in the second display area AA2, thereby making the brightness uniformity of the display panel better, improving the picture quality when the display panel displays the picture, and improving the picture abnormality problem caused by uneven brightness.

[0135] As mentioned above, since the effective cavity length of the microcavity effect is mainly determined by the distance d between the first electrode 1 and the second electrode 6 and the effective refractive index N between the first electrode 1 and the second electrode 6, for the sub-pixels of the same color, Including the following situations:

[0136] First, for sub-pixels of the same color, the effective refractive index N1 between the first electrode 1 and the second electrode 6 of the sub-pixel in the first display area AA1 is equal to the effective refractive index N2 between the first electrode 1 and the second electrode 6 of the sub-pixel in the second display area AA2, and the distance d1 between the first electrode 1 and the second electrode 6 of the sub-pixel in the first display area AA1 is not equal to the distance d2 between the first electrode 1 and the second electrode 6 of the sub-pixel in the second display area AA2.

[0137] Second, for sub-pixels of the same color, the distance d1 between the first electrode 1 and the second electrode 6 of the sub-pixel in the first display area AA1 is equal to the distance d2 between the first electrode 1 and the second electrode 6 of the sub-pixel in the second display area AA2; the effective refractive index N1 between the first electrode 1 and the second electrode 2 of the sub-pixel in the first display area AA1 is not equal to the effective refractive index N2 between the first electrode 1 and the second electrode 2 of the sub-pixel in the second display area AA2.

[0138] Third, the distance d1 between the first electrode 1 and the second electrode 6 of the subpixel in the first display area AA1 is not equal to the distance d2 between the first electrode 1 and the second electrode 6 of the subpixel in the second display area AA2, and the effective refractive index N1 between the first electrode 1 and the second electrode 2 of the subpixel in the first display area AA1 is not equal to the effective refractive index N2 between the first electrode 1 and the second electrode 2 of the subpixel in the second display area AA2. In at least one display panel provided herein, as shown in FIG2B , the first display area AA1 divides the second display area AA2 into a discontinuous third display sub-area (e.g., the portion of the second display area AA2 located to the left of the first display area AA1 in FIG2B ) and a fourth display sub-area (e.g., the portion of the second display area AA2 located to the right of the first display area AA1 in FIG2B );

[0139] The first display area AA1 includes a middle area (such as the area where the dotted rectangle in FIG. 2B is located) and edge areas on both sides of the middle area, and the edge areas are adjacent to the third display sub-area or the fourth display sub-area.

[0140] In some embodiments, the intermediate region includes at least one row of sub-pixels.

[0141] In the first display area AA1, for sub-pixels of the same color, the effective cavity length of the middle area is Greater or less than the effective cavity length of the edge area

[0142] For example, in the first display area AA1, along the direction from the middle area to the edge area, for sub-pixels with the same color, Gradually increase or decrease.

[0143] In practical applications, within the first display area AA1 corresponding to the spliced ​​exposure, there may be a brightness difference between the middle area and the edge area of ​​the first display area AA1. When the brightness of the middle area is higher and the brightness of the edge area is lower, the brightness difference can be set in the first display area AA1, along the direction from the middle area to the edge area, for sub-pixels of the same color, The intensity of the sub-pixels in the edge area decreases gradually, so that a strong microcavity effect occurs in the sub-pixels in the edge area, thereby increasing the brightness of the sub-pixels in the edge area and improving the brightness uniformity of the display panel;

[0144] When the brightness of the middle area is low and the brightness of the edge area is high, AA1 can be set in the first display area, along the direction from the middle area to the edge area, for sub-pixels of the same color, Gradually decreasing, so that the sub-pixels in the middle area have a strong microcavity effect, increasing the brightness of the sub-pixels in the middle area, thereby improving the brightness uniformity of the display panel;

[0145] In at least one display panel provided in the present application, along a direction from the first display area AA1 to the third display sub-area, the number of sub-pixels arranged in the first display area AA1 is less than or equal to 10.

[0146] Along the direction from the first display area AA1 to the third display sub-area, the number of sub-pixels set in the first display area AA1 is less than or equal to 10, that is, the first display area AA1 can be provided with at least one row of sub-pixels, and the number of rows of sub-pixels is less than or equal to 10.

[0147] Illustratively, along the direction from the first display area AA1 to the third display sub-area, the number of sub-pixels set in the first display area AA1 may be 1, 2, 3, 4, 5, 6, 7, 8, or 9.

[0148] In at least one display panel provided herein, the optical adjustment layer 3 includes a first optical adjustment layer and a second optical adjustment layer. The first optical adjustment layer is located in the first display area AA1, and the second optical adjustment layer is located in the second display area AA2. For some sub-pixels of the same color, the thicknesses of the first optical adjustment layer and the second optical adjustment layer are different.

[0149] In an exemplary embodiment, each subpixel includes a first subpixel P1, a second subpixel P2, and a third subpixel P3, wherein the first subpixel P1, the second subpixel P2, and the third subpixel P3 have different colors; for some subpixels with the same color, the thicknesses of the first optical adjustment layer and the second optical adjustment layer are different; for some subpixels with the same color, the thicknesses of the first optical adjustment layer and the second optical adjustment layer are the same.

[0150] For example, as shown in combination with FIG. 4 and FIG. 5 , for the first sub-pixel P1, the thickness of the first optical adjustment layer of the first sub-pixel P1 in the first display area AA1 and the second optical adjustment layer of the first sub-pixel P1 in the second display area AA2 are different;

[0151] For example, as shown in combination with FIG. 4 and FIG. 5 (or as shown in combination with FIG. 4 and FIG. 6 ), for the second sub-pixel P2, the thickness of the first optical adjustment layer of the second sub-pixel P2 in the first display area AA1 and the thickness of the second optical adjustment layer of the second sub-pixel P2 in the second display area AA2 are different;

[0152] For example, as shown in FIG4 and FIG6 , for the third subpixel P3, the first optical adjustment layer of the third subpixel P3 in the first display area AA1 and the second optical adjustment layer of the third subpixel P3 in the second display area AA2 have the same thickness.

[0153] In at least one display panel provided in the present application, the reflectivity of a portion of the driving substrate 100 located in the first display area AA1 is lower than the reflectivity of a portion of the driving substrate 100 located in the second display area AA2 .

[0154] In an exemplary embodiment, the main structure in the driving substrate 100 is a pixel driving circuit composed of a conductive pattern, wherein the conductive pattern is made of metal material. The larger the area of ​​the conductive pattern, the more significant the metal reflection effect in the area, and the higher the reflectivity.

[0155] Among them, the film layers, data lines, gate lines, power signal lines, reset power signal lines, reset control signal lines, light-emitting control signal lines and other film layers or structures in the pixel driving circuit (for example, including thin film transistors, storage capacitors and other structures) can refer to the introduction in the relevant technology and are not limited here.

[0156] In an exemplary embodiment, the first display area AA1 is a spliced ​​exposure area;

[0157] In the area prepared by splicing exposure, positive photoresist is generally used for metal exposure and etching. For etching processes using positive photoresist, the greater the exposure dose, the larger the gaps (Space) between the conductive patterns formed, resulting in a smaller size of the conductive patterns themselves. For example, when the conductive patterns are signal lines, the greater the exposure dose, the smaller the line width of the signal lines. Since the splicing exposure area undergoes repeated exposure, the exposure dose is large, so the gaps (Space) between the conductive patterns formed in the splicing exposure area are large, resulting in a smaller size of the conductive patterns themselves, resulting in a lower reflectivity in the splicing exposure area.

[0158] In at least one display panel provided in the present application, the aperture ratio of a portion of the display panel located in the first display area AA1 is greater than or equal to the aperture ratio of a portion of the display panel located in the second display area AA2.

[0159] In an exemplary embodiment, the aperture ratio of the OLED display panel is mainly determined by the size of the pixel opening of the pixel defining layer PDL in which the light-emitting functional layer 5 is set. At least part of the area of ​​the light-emitting functional layer 5 is set in the pixel opening of the pixel defining layer PDL. The larger the size of the pixel opening, the larger the area of ​​the effective light-emitting area and the greater the aperture ratio.

[0160] In an exemplary embodiment, the first display area AA1 is a spliced ​​exposure area;

[0161] In the area prepared by the spliced ​​exposure, positive photoresist is generally used for exposure and etching of the pixel defining layer (PDL). In the etching process using positive photoresist, the greater the exposure dose, the larger the size of the opening (Space) formed. Due to the repeated exposure in the spliced ​​exposure area, the exposure dose is higher, resulting in larger pixel openings in the pixel defining layer (PDL), and therefore a higher aperture ratio. When the first display area AA1 is the spliced ​​exposure area, the aperture ratio of the portion of the display panel located in the first display area AA1 is greater than the aperture ratio of the portion of the display panel located in the second display area AA2.

[0162] In at least one display panel provided in the present application, as shown in FIG8 , the sub-pixel includes an auxiliary electrode F, and the auxiliary electrode F is located between the first electrode 1 and the optical adjustment layer 3;

[0163] The transmittance of the portion of the auxiliary electrode F located in the first display area AA1 is less than or equal to the transmittance of the portion of the auxiliary electrode F located in the second display area AA2 .

[0164] In an embodiment of the present application, taking the first display area AA1 as the splicing exposure area as an example, when the aperture ratio of the first display area AA1 is greater than the aperture ratio of the second display area AA2, since other influencing factors are the same, the larger the aperture ratio, the greater the brightness; in order to further adjust the brightness uniformity of the display panel, the transmittance of the portion of the auxiliary electrode F located in the first display area AA1 can be set to be less than or equal to the transmittance of the portion of the auxiliary electrode F located in the second display area AA2. In this way, the transmittance of the portion of the auxiliary electrode F located in the second display area AA2 can be further improved, thereby improving the display brightness of the second display area AA2, so that the brightness of the first display area AA1 and the second display area AA2 tend to be consistent, thereby improving the display effect of the display panel.

[0165] In at least one display panel provided in the present application, for sub-pixels of the same color, the refractive index of the first optical adjustment layer is less than or equal to the refractive index of the second optical adjustment layer. That is, for sub-pixels of the same color, the refractive index of the optical adjustment layer 3 of the sub-pixel located in the first display area AA1 is less than or equal to the refractive index of the optical adjustment layer 3 of the sub-pixel located in the second display area AA2.

[0166] In at least one display panel provided in an embodiment of the present application, for sub-pixels of the same color, the refractive index of the optical adjustment layer 3 of the sub-pixel located in the first display area AA1 is set to be less than or equal to the refractive index of the optical adjustment layer 3 of the sub-pixel located in the second display area AA2. In this way, the smaller the refractive index, the weaker the microcavity effect, which can further increase the brightness of the display light in the second display area AA2. As a result, the brightness of the first display area AA1 and the second display area AA2 tends to be consistent, thereby improving the display quality of the display panel.

[0167] In the at least one display panel provided by the present application, the thickness of the first optical adjustment layer or the second optical adjustment layer is zero.

[0168] For example, the optical adjustment layer 3 may not be provided in the first display area AA1 (ie, the thickness of the first optical adjustment layer is zero); or the optical adjustment layer 3 may not be provided in the second display area AA2 (ie, the thickness of the second optical adjustment layer is zero).

[0169] For example, as shown in FIG. 5 , the optical adjustment layer 3 may not be provided in the first display area AA1 (ie, the thickness of the first optical adjustment layer is zero).

[0170] In the embodiments of the present application, taking the first display area AA1 as the splicing exposure area as an example, by not providing the optical adjustment layer 3 in the first display area AA1, and providing the optical adjustment layer 3 in the second display area AA2, a microcavity effect is formed in the second display area AA2. By adjusting the thickness of the optical adjustment layer 3 to adjust the strength of the microcavity effect, the brightness of the display light in the second display area AA2 is greatly improved, thereby making the brightness of the first display area AA1 and the second display area AA2 tend to be consistent, thereby improving the display effect of the display panel.

[0171] In at least one display panel provided in the present application, as shown in FIG. 4 , FIG. 7 , FIG. 8 , FIG. 9 , FIG. 10 , and FIG. 11 , a pixel unit includes a first subpixel P1, a second subpixel P2, and a third subpixel P3, and the second optical adjustment layer includes a first optical adjustment pattern 3A, a second optical adjustment pattern 3B, and a third optical adjustment pattern 3C;

[0172] Exemplarily, the first sub-pixel P1 is a sub-pixel of a first color, the second sub-pixel P2 is a sub-pixel of a second color, and the third sub-pixel P3 is a sub-pixel of a third color.

[0173] As shown in Figure 15 or Figure 16, in the second display area AA2, the first optical adjustment pattern 3A is located between the light-emitting function layer 5 and the first electrode 6 of the first sub-pixel P1, the second optical adjustment pattern 3B is located between the light-emitting function layer 5 and the first electrode 6 of the second sub-pixel P2, and the third optical adjustment pattern 3C is located between the light-emitting function layer 5 and the first electrode 6 of the third sub-pixel P3; wherein the thicknesses of the first optical adjustment pattern 3A, the second optical adjustment pattern 3B and the third optical adjustment pattern 3C are at least partially different.

[0174] In some examples, the luminous efficiency of the light-emitting device in the third subpixel P3 is greater than the luminous efficiency of the light-emitting device in the first subpixel P1, and the luminous efficiency of the light-emitting device in the third subpixel P3 is greater than the luminous efficiency of the light-emitting device in the second subpixel P2, and the luminous efficiency of the light-emitting device in the second subpixel P2 is greater than the luminous efficiency of the light-emitting device in the first subpixel P1.

[0175] For example, the first sub-pixel P1 is a blue sub-pixel, the second sub-pixel P2 is a red sub-pixel, and the third sub-pixel P3 is a green sub-pixel. Of course, the embodiments of the present application include but are not limited to the above.

[0176] In some examples, the area of ​​the orthographic projection of the effective light-emitting region of the first subpixel P1 on the driving substrate 100 is larger than the area of ​​the orthographic projection of the effective light-emitting region of the second subpixel P2 on the driving substrate 100, and the area of ​​the orthographic projection of the effective light-emitting region of the second subpixel P2 on the driving substrate 100 is larger than the area of ​​the orthographic projection of the effective light-emitting region of the third subpixel P3 on the driving substrate 100. Of course, the embodiments of the present application include but are not limited to these, and the area of ​​the effective light-emitting region of each subpixel can be set according to actual needs.

[0177] In addition, the thicknesses of the first optical adjustment pattern 3A, the second optical adjustment pattern 3B, and the third optical adjustment pattern 3C are at least partially different, including but not limited to the following:

[0178] First, as shown in FIG. 7 , the thickness of the first optical adjustment pattern 3A is greater than the thickness of the second optical adjustment pattern 3B and the third optical adjustment pattern 3C, and the thickness of the second optical adjustment pattern 3B and the thickness of the third optical adjustment pattern 3C are substantially equal.

[0179] Second, as shown in FIG. 8 , the thickness of the first optical adjustment pattern 3A is greater than the thickness of the second optical adjustment pattern 3B, and the thickness of the second optical adjustment pattern 3B is greater than the thickness of the third optical adjustment pattern 3C.

[0180] In this specification, “thickness” refers to the dimension of the structure along a direction perpendicular to the driving substrate 100 .

[0181] In the embodiment of the present application, since the luminous efficiency of the light-emitting devices in sub-pixels of different colors is different, by setting the thicknesses of the first optical adjustment pattern 3A, the second optical adjustment pattern 3B, and the third optical adjustment pattern 3C to be at least partially different, while using the microcavity effect to improve the overall brightness of the second display area AA2, it is also possible to set different optical adjustment pattern thicknesses for sub-pixels of different colors based on the original device luminous efficiency of the sub-pixels of different colors to adjust the strength of the microcavity effect of the sub-pixels of different colors, thereby adjusting the color of the picture and improving the image quality, and can also reduce power consumption and extend the service life of the sub-pixels.

[0182] For example, taking the first sub-pixel P1 as a blue sub-pixel, the second sub-pixel P2 as a red sub-pixel, and the third sub-pixel P3 as a green sub-pixel as an example, when the luminous efficiency of the light-emitting device in the third sub-pixel P3 is greater than the luminous efficiency of the light-emitting device in the second sub-pixel P2, and the luminous efficiency of the light-emitting device in the second sub-pixel P2 is greater than the luminous efficiency of the light-emitting device in the first sub-pixel P1, by setting the thickness of the first optical adjustment pattern 3A to be greater than the thickness of the second optical adjustment pattern 3B, and the thickness of the second optical adjustment pattern 3B to be greater than the thickness of the third optical adjustment pattern 3C; the first sub-pixel P1, which originally had the lowest luminous efficiency, has the strongest microcavity effect, which largely compensates for the defect of low luminous efficiency of the first sub-pixel P1, can reduce power consumption and reduce costs.

[0183] In at least one display panel provided by the present application, the refractive indices of the first optical adjustment pattern 3A, the second optical adjustment pattern 3B, and the third optical adjustment pattern 3C are at least partially different.

[0184] Exemplarily, the refractive indexes of the first optical adjustment pattern 3A and the second optical adjustment pattern 3B are different; or, the refractive indexes of the first optical adjustment pattern 3A and the third optical adjustment pattern 3C are different; or, the refractive indexes of the second optical adjustment pattern 3B and the third optical adjustment pattern 3C are different; or, the refractive indices of the first optical adjustment pattern 3A, the second optical adjustment pattern 3B and the third optical adjustment pattern 3C are all different.

[0185] In at least one display panel provided herein, as shown in Figures 7, 8, 9, 10, 11, 15, 16, and 18, the first optical adjustment pattern 3A, the second optical adjustment pattern 3B, and the third optical adjustment pattern 3C each include at least a conductive sublayer (e.g., a film layer of the mark 34); the conductive sublayer is electrically connected to the first electrode 1, and a gap is provided between the conductive sublayers in two adjacent sub-pixels;

[0186] Exemplarily, the material of the conductive sublayer may be a light-transmitting conductive material, such as a metal oxide, including but not limited to indium tin oxide (ITO) and indium zinc oxide (IZO).

[0187] Since the conductive sublayer in each sub-pixel is electrically connected to its corresponding first electrode 1, by setting a gap between the conductive sublayers in two adjacent sub-pixels, conduction between the conductive sublayers in the two sub-pixels is avoided, thereby avoiding a short circuit between the first electrodes 1 of the two adjacent sub-pixels.

[0188] At least one of the first optical adjustment pattern 3A, the second optical adjustment pattern 3B and the third optical adjustment pattern 3C further includes an inorganic sublayer, and the inorganic sublayer is located between the conductive sublayer and the first electrode.

[0189] The material of the inorganic sub-layer is not limited here. For example, the material of the inorganic sub-layer may include an inorganic conductive material and / or an inorganic insulating material.

[0190] For example, the material of the inorganic sub-layer may include at least one of silicon nitride, silicon oxide, silicon oxynitride, titanium nitride, titanium oxide, and aluminum oxide.

[0191] Among them, by arranging the inorganic sublayer between the conductive sublayer and the first electrode, the thickness of the first optical adjustment pattern 3A, the second optical adjustment pattern 3B and the third optical adjustment pattern 3C can be adjusted through the inorganic sublayer, thereby adjusting the effective cavity length of the microcavity structure formed in the first subpixel P1, the second subpixel P2 and the third subpixel P3 in the second display area AA2, and adjusting the brightness of the light emitted by the first subpixel P1, the second subpixel P2 and the third subpixel P3 in the second display area AA2, thereby adjusting the overall brightness of the second display area AA2.

[0192] In at least one display panel provided in the present application, in the second display area AA2, along the direction perpendicular to the light-emitting functional layer 5, the distance between the first electrode 1 and the second electrode 6 in the first sub-pixel P1 is a first distance J1; the distance between the first electrode 1 and the second electrode 6 in the second sub-pixel P2 is a second distance J2; the distance between the first electrode 1 and the second electrode 6 in the third sub-pixel P3 is a third distance J3; the first distance J1, the second distance J2 and the third distance J3 are at least partially unequal.

[0193] Exemplarily, the first distance J1 and the second distance J2 are substantially equal, and both are greater than the third distance J3.

[0194] Exemplarily, the second distance J2 and the third distance J3 are substantially equal, and both are smaller than the first distance.

[0195] Exemplarily, as shown in FIG15 , the first distance J1 , the second distance J2 , and the third distance J3 are not equal.

[0196] The first distance J1, the second distance J2 and the third distance J3 are respectively equivalent to the effective cavity length formula of the microcavity effect of the first sub-pixel P1, the second sub-pixel P2 and the third sub-pixel P3 in the second display area AA2. d2 in .

[0197] In the embodiment of the present application, since the luminous efficiency of the light-emitting devices in sub-pixels of different colors is different, by setting the first distance J1, the second distance J2 and the third distance J3 to be at least partially unequal, while using the microcavity effect to improve the overall brightness of the second display area AA2, different d2 values ​​can be set for sub-pixels of different colors according to the original device luminous efficiency of sub-pixels of different colors to adjust the strength of the microcavity effect of sub-pixels of different colors, thereby adjusting the color of the picture, improving the picture quality, reducing power consumption, and extending the service life of the sub-pixels.

[0198] For example, taking the first sub-pixel P1 as a blue sub-pixel, the second sub-pixel P2 as a red sub-pixel, and the third sub-pixel P3 as a green sub-pixel as an example, when the luminous efficiency of the light-emitting device in the third sub-pixel P3 is greater than the luminous efficiency of the light-emitting device in the second sub-pixel P2, and the luminous efficiency of the light-emitting device in the second sub-pixel P2 is greater than the luminous efficiency of the light-emitting device in the first sub-pixel P1, by setting the first distance J1 to be greater than the second distance J2, and the second distance J2 to be greater than the third distance J3; the first sub-pixel P1, which originally had the lowest luminous efficiency, has the strongest microcavity effect, which largely makes up for the defect of low luminous efficiency of the first sub-pixel P1, can reduce power consumption and reduce costs.

[0199] In at least one display panel provided in the present application, as shown in Figures 7, 8, 9, 10, 11, 15, 16, and 18, the first optical adjustment pattern 3A includes a first inorganic sublayer 31, a second inorganic sublayer 32, a third inorganic sublayer 33, and a conductive sublayer 34 sequentially disposed on the first electrode 1;

[0200] As shown in Figure 8, in the first sub-pixel P1 of the second display area AA2, the first optical adjustment pattern 3A also includes a first through hole (unmarked), the first through hole passes through the first inorganic sublayer 31, the second inorganic sublayer 32 and the third inorganic sublayer 33, and the conductive sublayer 34 is electrically connected to the first electrode 1 through the first through hole.

[0201] In an exemplary embodiment, when an auxiliary electrode F is further provided between the first electrode 1 and the first optical adjustment pattern 3A, the conductive sublayer 34 in the first optical adjustment pattern 3A is in direct contact with the auxiliary electrode F through the first through hole, and the auxiliary electrode F is conductively connected to the first electrode 1 .

[0202] In an embodiment of the present application, a first optical adjustment pattern 3A is provided, including a first inorganic sublayer 31, a second inorganic sublayer 32, a third inorganic sublayer 33, and a conductive sublayer 34 sequentially disposed on the first electrode 1. The effective cavity length of the microcavity structure formed in the first subpixel P1 can be adjusted by adjusting the thickness of the first inorganic sublayer 31, the second inorganic sublayer 32, the third inorganic sublayer 33, and the conductive sublayer 34. The refractive index of the first optical adjustment pattern 3A can be adjusted by adjusting the materials of the first inorganic sublayer 31, the second inorganic sublayer 32, the third inorganic sublayer 33, and the conductive sublayer 34, thereby further adjusting the effective cavity length of the microcavity structure formed in the first subpixel P1. This allows the first subpixel P1 in the second display area AA2 to have a stronger microcavity effect than the first subpixel P1 in the first display area AA1, thereby increasing the brightness of the display light in the second display area AA2, thereby making the brightness of the first display area AA1 and the second display area AA2 more consistent, and improving the display effect of the display panel.

[0203] In at least one display panel provided in the present application, as shown in FIG7 , FIG8 , FIG9 , FIG10 , FIG11 , FIG15 , FIG16 , and FIG18 , the second optical adjustment pattern 3B includes a first inorganic sublayer 31 , a second inorganic sublayer 32 , and a conductive sublayer 34 sequentially disposed on the first electrode 1 ;

[0204] As shown in FIG8 , in the second sub-pixel P2 of the second display area AA2 , the second optical pattern 3B further includes a second through hole that penetrates the first inorganic sub-layer 31 and the second inorganic sub-layer 32 , and the conductive sub-layer 34 is electrically connected to the first electrode 1 through the second through hole.

[0205] In a local area, for example, to improve the conductive stability between connecting lines or components of different film layers, multiple through-holes filled with conductive material can be provided between two conductive structures. The number of through-holes drawn in the drawings provided in this application does not represent a limitation on the number thereof and is merely an exemplary illustration.

[0206] The shapes and arrangements of the plurality of through holes (such as the first through hole and the second through hole) are not limited here either;

[0207] For example, the planar shape of the through hole may be rectangular, circular, or elliptical, etc., and the sizes of the plurality of through holes may be the same or different.

[0208] In an exemplary embodiment, when an auxiliary electrode F is further provided between the first electrode 1 and the second optical adjustment pattern 3B, the conductive sublayer 34 in the second optical adjustment pattern 3B is directly in contact with the auxiliary electrode F through the first through hole, and the auxiliary electrode F is conductively connected to the first electrode 1 .

[0209] In an embodiment of the present application, a second optical adjustment pattern 3B is provided, which includes a first inorganic sublayer 31, a second inorganic sublayer 32, and a conductive sublayer 34 sequentially arranged on the first electrode 1; wherein, the effective cavity length of the microcavity structure formed in the second sub-pixel P2 can be adjusted by adjusting the thickness of the first inorganic sublayer 31, the second inorganic sublayer 32, and the conductive sublayer 34, and the refractive index of the second optical adjustment pattern 3B can be adjusted by adjusting the materials of the first inorganic sublayer 31, the second inorganic sublayer 32, and the conductive sublayer 34, thereby further adjusting the effective cavity length of the microcavity structure formed in the second sub-pixel P2, so that the second sub-pixel P2 in the second display area AA2 has a stronger microcavity effect than the second sub-pixel P2 in the first display area AA1, thereby improving the brightness of the display light of the second display area AA2, so that the brightness of the first display area AA1 and the second display area AA2 tend to be consistent, thereby improving the display effect of the display panel.

[0210] In at least one display panel provided in the present application, as shown in Figures 7, 8, 9, 10, 11, 15, 16 and 18, the third optical adjustment pattern 3C includes a conductive sublayer 34 arranged on the first electrode 1, and in the third sub-pixel P3 of the second display area AA2, the conductive sublayer 34 is in contact with the first electrode 1.

[0211] In an exemplary embodiment, when an auxiliary electrode F is further provided between the first electrode 1 and the third optical adjustment pattern 3C, the conductive sublayer 34 in the third optical adjustment pattern 3C is directly in contact with the auxiliary electrode F through the first through hole, and the auxiliary electrode F is conductively connected to the first electrode 1 .

[0212] In an embodiment of the present application, a third optical adjustment pattern 3C is provided to include a conductive sublayer 34 located on the first electrode 1; wherein, the effective cavity length of the microcavity structure formed in the third sub-pixel P3 can be adjusted by adjusting the thickness of the conductive sublayer 34, and the refractive index of the third optical adjustment pattern 3C can be adjusted by adjusting the material of the conductive sublayer 34, thereby further adjusting the effective cavity length of the microcavity structure formed in the third sub-pixel P3, so that the third sub-pixel P3 in the second display area AA2 has a stronger microcavity effect than the third sub-pixel P3 in the first display area AA1, thereby improving the brightness of the display light of the second display area AA2, making the brightness of the first display area AA1 and the second display area AA2 tend to be consistent, thereby improving the display effect of the display panel.

[0213] It should be noted that in at least one display panel provided in the embodiments of the present application, as shown in Figures 7, 8, 9, 10, 11, 15, 16 and 18, in the second display area AA2, the area between two adjacent sub-pixels, such as the area between the first sub-pixel P1 and the second sub-pixel P2, and the area between the second sub-pixel P2 and the third sub-pixel P3, are provided with a first inorganic sub-layer 31, a second inorganic sub-layer 32, a third inorganic sub-layer 33 and a conductive sub-layer 34; wherein the first inorganic sub-layer 31, the second inorganic sub-layer 32 and the third inorganic sub-layer 33 in the area between two adjacent sub-pixels can all be connected together; and the conductive sub-layer 34 in the area between two adjacent sub-pixels includes a first part and a second part, and there is a gap between the first part and the second part to avoid short-circuiting between the two sub-pixels through the conductive sub-layer 34 in the area between the two adjacent sub-pixels.

[0214] In addition, there is no limitation on whether the thickness of the first inorganic sub-layer 31 in any two sub-pixels is the same, whether the thickness of the second inorganic sub-layer 32 in any two sub-pixels is the same, whether the thickness of the third inorganic sub-layer 33 in any two sub-pixels is the same, and whether the thickness of the conductive sub-layer 34 in any two sub-pixels is the same.

[0215] In at least one embodiment of the present application, the thickness of the first inorganic sub-layer 31 in any two sub-pixels is the same;

[0216] In at least one embodiment of the present application, the thickness of the second inorganic sub-layer 32 in any two sub-pixels is the same;

[0217] In at least one embodiment of the present application, the thickness of the third inorganic sub-layer 33 in any two sub-pixels is the same;

[0218] In at least one embodiment of the present application, the thickness of the conductive sublayer 34 in any two sub-pixels is the same.

[0219] In at least one display panel provided in the present application, the refractive indices of the first inorganic sub-layer 31 , the second inorganic sub-layer 32 , the third inorganic sub-layer 33 and the conductive sub-layer 34 are all different.

[0220] In at least one display panel provided by the present application, the refractive indices of the first inorganic sublayer 31 , the second inorganic sublayer 32 , the third inorganic sublayer 33 and the conductive sublayer 34 gradually increase in a direction away from the first electrode 1 .

[0221] Along the direction toward the first electrode 1 , the refractive indices of the first inorganic sub-layer 31 , the second inorganic sub-layer 32 , the third inorganic sub-layer 33 and the conductive sub-layer 34 gradually decrease.

[0222] In the embodiment of the present application, when light emitted from the light-emitting functional layer 5 passes through the optical adjustment layer 3 and is emitted toward the first electrode 1, the refractive index of the first inorganic sublayer 31, the second inorganic sublayer 32, the third inorganic sublayer 33, and the conductive sublayer 34 gradually increases in a direction away from the first electrode 1, that is, the refractive index of the first inorganic sublayer 31, the second inorganic sublayer 32, the third inorganic sublayer 33, and the conductive sublayer 34 gradually decreases in a direction toward the first electrode 1. In this way, when the light passes through the optical adjustment layer 3 and is emitted toward the first electrode 1, the light is transmitted from the optically dense medium to the optically sparse medium, and total internal reflection is very likely to occur, so that the light emitted to the first electrode 1 is reflected to the light-emitting side, which is beneficial to enhancing the microcavity effect and improving the light extraction efficiency of the sub-pixel, thereby increasing the brightness of the second display area AA2, making the brightness of the first display area AA1 and the second display area AA2 tend to be consistent, and improving the display effect of the display panel.

[0223] In at least one display panel provided in the present application, the material of the first inorganic sub-layer 31 includes silicon oxide (SiO2), the material of the second inorganic sub-layer 32 includes aluminum oxide (Al2O3), and the material of the third inorganic sub-layer 33 includes silicon nitride (SiN x ), the material of the conductive sublayer 34 includes indium tin oxide (ITO) or indium zinc oxide (IZO).

[0224] In at least one embodiment of the present application, for the area where the first inorganic sublayer 31 is provided, each first inorganic sublayer 31 is an integrated structure; for the area where the second inorganic sublayer 32 is provided, each second inorganic sublayer 32 is an integrated structure; for the area where the third inorganic sublayer 33 is provided, each third inorganic sublayer 33 is an integrated structure.

[0225] It should be noted that an integrated structure refers to a structure that is prepared using the same precursor material in the same preparation process; the final materials of the two structures corresponding to the integrated structure can be the same or different; sharing a structure (for example, sharing a second electrode 6) means that the same material is used in the same preparation process, and the final materials are the same.

[0226] In at least one display panel provided in the present application, as shown in FIG6 , FIG12 , FIG13 , FIG14 , FIG17 and FIG19 , the first optical adjustment layer includes a fourth optical adjustment pattern 3D, a fifth optical adjustment pattern 3E and a sixth optical adjustment pattern 3F;

[0227] As shown in Figures 6 and 17, in the first display area AA1, the fourth optical adjustment pattern 3D is located between the light-emitting function layer 5 and the first electrode 1 of the first sub-pixel P1, the fifth optical adjustment pattern 3E is located between the light-emitting function layer 5 and the first electrode 1 of the second sub-pixel P2, and the sixth optical adjustment pattern 3F is located between the light-emitting function layer 5 and the first electrode 1 of the third sub-pixel P3; as shown in Figure 6, the thickness H4 of the fourth optical adjustment pattern 3D, the thickness H5 of the fifth optical adjustment pattern 3E, and the thickness H6 of the sixth optical adjustment pattern 3F are substantially the same.

[0228] In at least one display panel provided in the present application, the fourth optical adjustment pattern 3D, the fifth optical adjustment pattern 3E, and the sixth optical adjustment pattern 3F are made of the same material and are all light-transmitting conductive materials. It can be considered that the fourth optical adjustment pattern 3D, the fifth optical adjustment pattern 3E, and the sixth optical adjustment pattern 3F each include a conductive sublayer 34, and the conductive sublayer 34 in the fourth optical adjustment pattern 3D, the fifth optical adjustment pattern 3E, and the sixth optical adjustment pattern 3F is arranged on the same layer as the conductive sublayer 34 in the first optical adjustment pattern 3A, the second optical adjustment pattern 3B, and the third optical adjustment pattern 3C.

[0229] Here, "same-layer arrangement" refers to a structure formed by patterning two (or more) structures through the same patterning process, and their materials can be the same or different. For example, the precursor materials for forming the multiple structures arranged in the same layer are the same, and the final materials can be the same or different. In at least one embodiment provided in the present application, the conductive sublayer 34 in the fourth optical adjustment pattern 3D, the fifth optical adjustment pattern 3E, and the sixth optical adjustment pattern 3F is the same as the final material of the conductive sublayer 34 in the first optical adjustment pattern 3A, the second optical adjustment pattern 3B, and the third optical adjustment pattern 3C.

[0230] In the first sub-pixel P1 of the first display area AA1, the fourth optical adjustment pattern 3D is in contact with the first electrode 1; in the second sub-pixel P2, the fifth optical adjustment pattern 3E is in contact with the first electrode 1; in the third sub-pixel P3, the sixth optical adjustment pattern 3F is in contact with the first electrode 1.

[0231] In at least one display panel provided in the present application, as shown in Figures 8, 9, 10, 11, and 13-19, the auxiliary electrode F includes a first auxiliary sub-electrode F1 and a second auxiliary sub-electrode F2, the first auxiliary sub-electrode F1 is in contact with the first electrode 1, and the second auxiliary sub-electrode F2 is in contact with the optical adjustment layer 3; the hardness of the material of the first auxiliary sub-electrode F1 is greater than the hardness of the material of the first electrode 1.

[0232] In at least one embodiment of the present application, the auxiliary electrode F is made of a light-transmitting conductive material.

[0233] In an exemplary embodiment, the material of the first electrode 1 includes aluminum (AL), the material of the first auxiliary sublayer F1 includes titanium nitride (TiN), and the material of the second auxiliary sublayer F2 includes indium tin oxide (ITO) or indium zinc oxide (IZO).

[0234] In the embodiment of the present application, by setting the hardness of the material of the first auxiliary sub-electrode F1 to be greater than the hardness of the material of the first electrode 1, the first electrode 1 can be protected and damage to the first electrode 1 during the actual manufacturing process can be avoided.

[0235] In at least one display panel provided in the present application, as shown in Figures 8, 9, 10, 11, and 13-19, the sub-pixel further includes an auxiliary conductive layer D and a protective layer B. The auxiliary conductive layer D includes a third auxiliary sub-electrode F3 and a fourth auxiliary sub-electrode F4. The third auxiliary sub-electrode F3 is located between the first electrode 1 and the fourth auxiliary sub-electrode F4. The fourth auxiliary sub-electrode F4 is in contact with and conductive to the drive substrate 100. The protective layer B covers the side surfaces of the first electrode 1.

[0236] The material of the third auxiliary sub-electrode F3 is the same as that of the first auxiliary sub-electrode F1 .

[0237] Exemplarily, the hardness of the material of the third auxiliary sub-electrode F3 is greater than the hardness of the material of the first electrode 1 .

[0238] In the embodiment of the present application, by setting the hardness of the material of the third auxiliary sub-electrode F3 to be greater than the hardness of the material of the first electrode 1, the first electrode 1 can be protected and damage to the first electrode 1 during the actual manufacturing process can be avoided.

[0239] Exemplarily, the material of the fourth auxiliary sub-electrode F4 includes titanium (Ti), the material of the third auxiliary sub-electrode F3 includes titanium nitride (TiN), and the material of the first electrode 1 includes aluminum (AL), wherein titanium nitride (TiN) has a greater hardness and can protect aluminum (AL). The fourth auxiliary sub-electrode F4 is in contact and conductive with the driving substrate 100. By setting the material of the fourth auxiliary sub-electrode F4 to include titanium (Ti), its contact and conductive stability with the driving substrate 100 can be improved, thereby improving the conductive stability between the driving substrate 100 and the first electrode 1 and improving the driving capability of the driving circuit.

[0240] Exemplarily, the driving substrate 100 further includes a plurality of tungsten vias (W Via). By providing the fourth auxiliary sub-electrode F4, better conduction with the tungsten vias (W Via) in the driving substrate 100 can be achieved, thereby improving the conduction stability between the driving substrate 100 and the first electrode 1.

[0241] In at least one display panel provided in the present application, the drive substrate 100 includes multiple metal layers, each of which includes multiple conductive patterns. FIG3 shows a metal layer in the drive substrate 100, in which a data line DL is provided. The first display area AA includes a first area Area1, and the second display area AA2 includes a second area Area2. The first area Area1 and the second area Area2 have the same shape and area.

[0242] Exemplarily, the conductive pattern may include signal lines and conductive structures, such as data lines DL, gate lines GL, reset signal lines Reset Line, and the like.

[0243] For at least one metal layer, for example, a metal layer provided with data lines DL, the area of ​​the conductive pattern (for example, data lines DL) located in the first area Area1 is smaller than the area of ​​the conductive pattern (for example, data lines DL) located in the second area Area2.

[0244] In the embodiment of the present application, taking the first display area AA1 as the spliced ​​exposure area as an example, since the spliced ​​exposure area undergoes two exposures, the amount of exposure it receives is greater than that of the normally exposed area. Therefore, compared to the normally exposed area, the conductive pattern in the spliced ​​exposure area is smaller in size and has larger spaces. Therefore, for each metal layer using spliced ​​exposure, the area of ​​the conductive pattern in the first area, Area1, is smaller than the area of ​​the conductive pattern in the second area, Area2. The first area, Area1, and the second area, Area2, have the same shape and area, and the corresponding conductive patterns therein are substantially identical.

[0245] In an exemplary embodiment, for at least one metal layer, the line width of a portion of a signal line in the metal layer located in the first area Area 1 is smaller than the line width of a portion of the same signal line located in the second area Area 2 .

[0246] Exemplarily, as shown in FIG21 , the difference between the line width of the signal line in the metal layer located in the first area Area1 and the line width of the same signal line in the second area Area2 ranges from 0.1 μm to 0.6 μm.

[0247] For example, the differences in line width between a portion of a signal line in the first area Area 1 and a portion of the signal line in the second area Area 2 in the metal layer are 0.2 μm, 0.3 μm, 0.4 μm, and 0.5 μm.

[0248] Figure 21 illustrates the difference in line width between the portion of the same signal line located in the first area Area 1 and the portion located in the second area Area 2 under different exposure doses (Dose). In the embodiments of the present application, the exposure dose during actual exposure is not limited and can be determined based on the design of the actual product.

[0249] In at least one display panel provided in the present application, as shown in FIG. 4 to FIG. 19 , the display panel further includes a filling layer 2 and a pixel defining layer 4. The filling layer 2 is disposed between the first electrodes 1 of two adjacent sub-pixels, and the optical adjustment layer 3 at least partially covers the filling layer 2. The pixel defining layer 4 is located on a side of all optical adjustment layers 3 away from the first electrodes 1.

[0250] In an exemplary embodiment, the filling layer 2 is made of an insulating material, which is used to separate the first electrodes 1 of two adjacent sub-pixels to avoid a short circuit between the two adjacent first electrodes 1 .

[0251] In some embodiments, the upper surface of the filling layer 2 (the surface away from the driving substrate 100 ) is flush with the upper surface of the first electrode 1 , so that subsequent structures have a flatter topography during the preparation process, reducing the difficulty of the preparation process and improving the yield.

[0252] In some embodiments, when the auxiliary electrode F covers the first electrode 1, the upper surface of the filling layer 2 (the surface on the side away from the driving substrate 100) is flush with the upper surface of the auxiliary electrode F, so that the subsequent structure has a flatter terrain during the preparation process, reducing the difficulty of the preparation process and improving the yield.

[0253] The optical adjustment layer 3 at least partially covers the filling layer 2, including but not limited to the following situations:

[0254] First, as shown in FIG. 17 , when the optical adjustment layer 3 includes only the conductive sublayer 34 , there is a gap between two adjacent conductive sublayers 34 due to their conductivity. In this case, the optical adjustment layer 3 covers a portion of the filling layer 2 .

[0255] Second, as shown in FIG. 7 , when the optical adjustment layer 3 includes at least one of the first inorganic sub-layer 31 , the second inorganic sub-layer 32 , and the third inorganic sub-layer 33 , the optical adjustment layer 3 may cover all of the filling layer 2 .

[0256] The pixel defining layer 4 includes a plurality of first grooves K1 arranged in an array, and at least a portion of the light-emitting functional layer 5 is disposed in the first grooves K1; an area enclosed by an orthographic projection of the outer contour of the first grooves K1 on the drive substrate 100 falls within the orthographic projection of the optical adjustment layer 3 on the drive substrate 100.

[0257] The first groove K1 can also be referred to as a pixel opening. The plurality of pixel openings correspond to the plurality of sub-pixels one-to-one to define the light-emitting areas of the plurality of sub-pixels.

[0258] The planar shape of the first groove K1 is not limited here. Generally, the first groove K1 has different planar shapes according to the different colors of the sub-pixels.

[0259] Exemplarily, the planar shape of the first groove K1 in the first subpixel P1, the planar shape of the first groove K1 in the second subpixel P2, and the planar shape of the first groove K1 in the third subpixel P3 are at least partially different.

[0260] Exemplarily, the planar graphic size of the first groove K1 in the first subpixel P1, the planar graphic size of the first groove K1 in the second subpixel P2, and the planar graphic size of the first groove K1 in the third subpixel P3 are at least partially different.

[0261] Exemplarily, the planar shape of the first groove K1 may include a polygon, an arc, or a combination of a polygon and an arc; wherein the combination of a polygon and an arc includes a figure formed by splicing a polygon and an arc, or a figure formed by removing a portion of a polygon or an arc; the polygon may include a triangle, a quadrilateral, a pentagon, etc., and the arc may include a sector, a circle, an ellipse, a semicircle, etc.;

[0262] It should be noted that the planar shape and size of the first groove K1 are related to the aperture ratio of the display panel.

[0263] In at least one display panel provided in the present application, for the first groove K1 in which the same color light-emitting functional layer is set, the size of the plane figure of the portion of the first groove K1 located in the first display area AA1 is greater than or equal to the size of the plane figure of the portion of the first groove K1 located in the second display area AA2.

[0264] For example, in combination with Figures 4 and 5, the area S1 of the plane figure of the first groove K1 of the first sub-pixel P1 in the second display area AA2 is smaller than the area S4 of the plane figure of the first groove K1 of the first sub-pixel P1 in the first display area AA1; the area S2 of the plane figure of the first groove K1 of the second sub-pixel P2 in the second display area AA2 is smaller than the area S5 of the plane figure of the first groove K1 of the second sub-pixel P2 in the first display area AA1; the area S3 of the plane figure of the first groove K1 of the third sub-pixel P3 in the second display area AA2 is smaller than the area S6 of the plane figure of the first groove K1 of the third sub-pixel P3 in the first display area AA1.

[0265] In at least one display panel provided in the present application, as shown in Figures 9-11 and Figures 13-19, the pixel defining layer 4 includes a plurality of second grooves K2, and the second grooves K2 are arranged between two adjacent first grooves K1. The depth of the second grooves K2 along the direction perpendicular to the driving substrate 100 is less than or equal to the depth of the first grooves K1 along the direction perpendicular to the driving substrate 100.

[0266] The planar shape of the second groove K2 is not limited herein. For example, the planar shape of the second groove K2 may include a polygon, an arc, or a combination of a polygon and an arc; wherein the combination of a polygon and an arc includes a shape formed by splicing a polygon and an arc, or a shape formed by removing a portion of a polygon or an arc; the polygon may include a triangle, a quadrilateral, a pentagon, etc., and the arc may include a sector, a circle, an ellipse, a semicircle, etc.

[0267] In the actual preparation process, when the light-emitting layer in the light-emitting functional layer 5 is prepared by an evaporation process or an inkjet printing process, by setting a second groove K2 between two adjacent first grooves K1, excess light-emitting layer material can flow into the second groove K2, thereby avoiding color mixing of the light-emitting layers of two adjacent sub-pixels.

[0268] In at least one display panel provided in the present application, as shown in FIG14 and FIG15 , the light-emitting function layer 5 includes a light-emitting sublayer 51 , and the second groove K2 is configured to prevent the light-emitting sublayers 51 of two adjacent sub-pixels from mixing colors.

[0269] In at least one display panel provided in the present application, as shown in Figures 16 and 17, the light-emitting functional layer 5 includes at least two light-emitting sublayers 51 and 53, a charge generation layer 52 is arranged between two adjacent light-emitting sublayers 51 and 53, and the second groove K2 is configured to separate the charge generation layer 52 of two adjacent sub-pixels.

[0270] In the display panel provided in the embodiments of the application, by providing a second groove K2 between adjacent sub-pixels and disconnecting the charge generation layer 52 in the light-emitting functional layer 5 at the location of the second groove K2, the highly conductive charge generation layer 52 is prevented from causing crosstalk between adjacent sub-pixels. Furthermore, because the display panel can avoid crosstalk between adjacent sub-pixels through the second groove K2, the display panel can improve pixel density while adopting a double-layer EL (Tandem EL) design. Consequently, the display panel can have advantages such as long life, low power consumption, high brightness, and high resolution.

[0271] It should be noted that the above-mentioned “adjacent sub-pixels” refer to two sub-pixels without any other sub-pixels arranged between them.

[0272] When the light-emitting functional layer 5 includes at least two light-emitting sublayers, the light-emitting functional layer 5 further includes multiple functional sublayers in a direction perpendicular to the drive substrate 100. The multiple subfunctional layers include a hole transport layer matching the first light-emitting sublayer 51 of a different color, the first light-emitting sublayer 51 of a different color, a charge generation layer 52, a hole output layer matching the second light-emitting sublayer 53 of a different color, the second light-emitting sublayer 53 of a different color, an electron transport layer, and an electron injection layer. The specific structure of this double-layer light-emitting (Tandem EL) design can be referred to the introduction in the relevant art and will not be repeated here.

[0273] It should be noted that for a display panel with a tandem EL design, in some examples, a gap may exist between the light-emitting sublayers of two adjacent sub-pixels; in some examples, the light-emitting sublayers of two adjacent sub-pixels may be connected; and in some examples, there may be an overlapping region between the light-emitting sublayers of two adjacent sub-pixels.

[0274] In addition, film layers such as hole transport layer, electron blocking layer, hole output layer, electron transport layer and electron injection layer can be collectively referred to as common layers. The common layers of all sub-pixels in the display panel can be shared, that is, the common layers of any two adjacent sub-pixels are connected as one.

[0275] The charge generation layer 52 includes an n-type doped layer for generating holes and a p-type doped layer for generating electrons, which are stacked. For example, the charge generation layer may include an n-type doped organic layer / a p-type doped organic layer, such as BPhen:Cs / NPB:F4-TCNQ, Alq3:Li / NPB:FeCl3, TPBi:Li / NPB:FeCl3, and Alq3:Mg / m-MTDATA:F4-TCNQ.

[0276] Of course, the embodiments of the present application include but are not limited to the above, and the material of the charge generation layer may also include an n-type doped organic layer / inorganic metal oxide, such as Alq3:Mg / WO3, Bphen:Li / MoO3, BCP:Li / V2O5 and BCP:Cs / V2O5; or, an n-type doped organic layer / organic layer, such as Alq3:Li / HAT-CN; or, a non-doped material, such as F 16 CuPc / CuPc and Al / WO3 / Au.

[0277] For example, the material of the light-emitting sublayer can be selected from pyrene derivatives, anthracene derivatives, fluorene derivatives, perylene derivatives, styrylamine derivatives, metal complexes, and the like.

[0278] For example, the material of the hole injection layer may include oxides such as molybdenum oxide, titanium oxide, vanadium oxide, rhenium oxide, ruthenium oxide, chromium oxide, zirconium oxide, hafnium oxide, tantalum oxide, silver oxide, tungsten oxide, and manganese oxide.

[0279] For example, the material of the hole injection layer may also include organic materials, such as hexacyanohexaazatriphenylene, 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ), and 1,2,3-tris[(cyano)(4-cyano-2,3,5,6-tetrafluorophenyl)methylene]cyclopropane.

[0280] For example, the material of the hole transport layer may include aromatic amines and dimethylfluorene or carbazole materials having hole transport properties, such as: 4,4'-bis[N-(1-naphthyl)-N-phenylamino]biphenyl (NPB), N,N'-bis(3-methylphenyl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine (TPD), 4-phenyl-4'-(9-phenylfluorene-9-yl)triphenylamine (BAFLP), 4,4'-bis[N-(9,9-dimethylfluorene-2-yl)-N-phenylamino]biphenyl (DFLDPBi), 4,4'-di(9-carbazolyl)biphenyl (CBP), 9-phenyl-3-[4-(10-phenyl-9-anthracenyl)phenyl]-9H-carbazole (PCzPA).

[0281] For example, the material of the electron transport layer may include aromatic heterocyclic compounds, such as benzimidazole derivatives, imidazole derivatives, pyrimidine derivatives, oxazine derivatives, quinoline derivatives, isoquinoline derivatives, phenanthroline derivatives, and the like.

[0282] For example, the material of the electron injection layer may be an alkali metal or a metal and a compound thereof, such as lithium fluoride (LiF), ytterbium (Yb), magnesium (Mg), and calcium (Ca).

[0283] In at least one display panel provided in the present application, as shown in Figure 18, the pixel defining layer 4 includes a first sublayer 41, a second sublayer 42 and a third sublayer 43 arranged in sequence along a direction away from the first electrode 1; the second groove K2 includes an opening and a bottom, and the size of the figure enclosed by the edge of the opening is less than or equal to the size of the shape enclosed by the outer contour of the bottom.

[0284] In an exemplary embodiment, as shown in FIG. 18 , the depth of the second groove K2 is substantially equal to the sum of the thicknesses of the second sub-layer 42 and the third sub-layer 43 .

[0285] In an exemplary embodiment, the thickness of the second sub-layer 42 is greater than the thickness of the first sub-layer 41 , and the thickness of the second sub-layer 42 is greater than the thickness of the third sub-layer 43 .

[0286] For example, the material of the pixel defining layer 4 may include an organic material, such as polyimide, acrylic, or polyethylene terephthalate.

[0287] Exemplarily, the material of the pixel defining layer 4 may include an inorganic material, such as at least one of silicon oxide, silicon nitride, and silicon oxynitride.

[0288] For example, the material of the first sublayer 41 of the pixel defining layer 4 is silicon oxide, the material of the second sublayer 42 of the pixel defining layer 4 is silicon nitride, and the material of the third sublayer 43 of the pixel defining layer 4 is silicon oxide.

[0289] In an embodiment of the present application, when the light-emitting functional layer 5 is prepared by an inkjet printing process, when the printing ink is offset, the printing ink flows into the second groove K2. By setting the second groove K2 to include an opening and a bottom, the size of the figure enclosed by the edge of the opening is less than or equal to the size of the shape enclosed by the outer contour of the bottom; in this way, the printing ink in the second groove K2 can be prevented from overflowing, and the printing ink in two adjacent sub-pixels can be prevented from mixing colors.

[0290] In at least one display panel provided in the present application, as shown in Figures 18 and 19, the display panel also includes an encapsulation layer (for example, including encapsulation sublayers 8 and 10), a color filter layer 9 and a lens layer 11, the encapsulation layer covers all second electrodes 6, the encapsulation layer includes at least two encapsulation sublayers, and the color filter layer 9 is located between the two encapsulation sublayers 8 and 10; the lens layer 11 includes a plurality of lens structures L, the lens structure L is arranged in the first display area AA1 and / or the second display area AA2, and the lens structure L is located on the side of the color filter layer 9 away from the first electrode 1.

[0291] In an exemplary embodiment, the display panel may further include a film layer 7, wherein the film layer 7 may be a buffer layer or a planar layer; the buffer layer is used to cover the cathode (second electrode 6) to facilitate subsequent deposition of the encapsulation layer, and the planar layer is used to perform a planarization effect.

[0292] The color filter layer 9 includes a red filter pattern 91 , a green filter pattern 92 , a blue filter pattern 93 , and a black matrix pattern located between any two of the red filter pattern 91 , the green filter pattern 92 , and the blue filter pattern 93 .

[0293] The lens structure L is provided in the first display area AA1 and / or the second display area AA2 in the following cases:

[0294] The lens structure L is arranged in the first display area AA1;

[0295] The lens structure L is arranged in the second display area AA2;

[0296] The lens structure L is disposed in the first display area AA1 and the second display area AA2.

[0297] The drawings provided in the embodiments of the present application are drawn by taking the lens structure L being arranged in the first display area AA1 and the second display area AA2 as an example.

[0298] In the embodiment of the present application, the lens structure L can be set in the first display area AA1 and / or the second display area AA2 according to actual conditions, so as to further improve the light extraction efficiency of the display panel and improve the brightness uniformity of the display panel.

[0299] Figure 20 provides a top view of the structure of a display panel, wherein at least one display panel provided in an embodiment of the present application also includes a cathode ring CA Ring, which surrounds the display area AA and the binding area BD of the display panel, wherein the second electrode (cathode) 6 is overlapped on the cathode ring CA Ring and electrically connected to the cathode ring CA Ring.

[0300] Multiple bonding terminals are provided in the bonding area, for example, a first bonding terminal R pad for connecting the anodes AN-R of all red sub-pixels, a second bonding terminal G pad for connecting the anodes AN-G of all green sub-pixels, a third bonding terminal B pad for connecting the anodes AN-B of all blue sub-pixels, and a fourth bonding terminal CA pad for connecting the cathodes of all sub-pixels.

[0301] Of course, the above-mentioned display panel may also include other structures and components. This specification only introduces structures and components related to the invention. For other structures and components included in the display panel, reference may be made to the introduction in the relevant technology.

[0302] An embodiment of the present application provides a display device, comprising the display panel as described above.

[0303] The display device provided in the embodiments of the present application may be an OLED display device, wherein the OLED display device may include a glass-based OLED display device and a silicon-based OLED display device.

[0304] In addition, the display device can be a display device such as an OLED display, as well as any product or component with a display function, such as a television, a digital camera, a mobile phone, a tablet computer, etc. that includes these display devices.

[0305] In the display device provided in the embodiments of the present application, since the aperture ratio of the portion of the display panel located in the first display area AA1 is different from the aperture ratio of the portion of the display panel located in the second display area AA2, there may be a difference in display brightness between the first display area AA1 and the second display area AA2. By providing an optical adjustment layer 3 in each sub-pixel, the thickness of at least a portion of the optical adjustment layer 3 is different, and display light forms a microcavity effect between the first electrode 1 and the second electrode 6. The different thicknesses of the optical adjustment layer 3 result in different effective cavity lengths of the microcavity, thereby adjusting the brightness of different areas by adjusting the strength of the microcavity effect. This balances the effect of the microcavity effect on brightness with the effect of the aperture ratio on brightness, ultimately making the display brightness of the portion of the display panel located in the first display area AA1 consistent with the display brightness of the portion of the display panel located in the second display area AA2, thereby improving the brightness uniformity of the display panel and enhancing the display effect.

[0306] An embodiment of the present application provides a method for manufacturing a display panel, which is applied to manufacturing the display panel as described above. The specific method is as follows:

[0307] 1. Provide a driving substrate 100 ; the driving substrate 100 may be a CMOS substrate;

[0308] As shown in FIG. 22A and FIG. 22B , the portion of the driving substrate 100 located in the first display area AA1 and the portion of the driving substrate 100 located in the second display area AA2 have the same structure.

[0309] 2. As shown in FIG. 22A and FIG. 22B , an auxiliary conductive layer D, a first electrode 1 and an auxiliary electrode F are sequentially formed on the driving substrate 100 ;

[0310] 3. Forming a protective layer B; the protective layer B covers the side surfaces of the first electrode 1;

[0311] The protective layer B may be obtained by adopting processes of film formation, coating, exposure, development, and etching, and the protective layer B is used to prevent the first electrode 1 from being corroded.

[0312] 4. Performing a Lateral Height Coverage (LHC) process to form a filling layer 2 as shown in FIG. 23A and FIG. 23B ;

[0313] In practical applications, a silicon oxide film may be first deposited, and then resist coating, exposure, development, and etching may be performed to pattern the silicon oxide layer to obtain a filling layer 2 as shown in FIG. 23A and FIG. 23B .

[0314] 5. A silicon oxide film and an aluminum oxide film are formed in sequence, and the silicon oxide film and the aluminum oxide film are patterned at the same time to obtain intermediate structures 31a and 32a as shown in FIG. 24A and FIG. 24B .

[0315] 6. Form a silicon nitride film and pattern the silicon nitride film to obtain a third inorganic sublayer 33 as shown in FIG. 25A ; then pattern the intermediate structures 31 a and 32 a to obtain a first inorganic sublayer 31 and a second inorganic sublayer 32 as shown in FIG. 25A .

[0316] 7. Forming a conductive sublayer 34 as shown in FIG. 25A and FIG. 25B ;

[0317] 8. A PECVD process is used to form a pixel defining layer 4 as shown in FIG. 26A and FIG. 26B ; and a first groove K1 (also referred to as a pixel opening) is formed by etching.

[0318] 9. Use an etching process to form a second groove K2 as shown in FIG. 26A and FIG. 26B .

[0319] After forming the second groove K2, other film layers such as the light-emitting functional layer 5 and the second electrode 6 are formed as shown in Figures 18 and 19. The preparation process of the subsequent structure of the display panel can refer to the introduction in the relevant technology and will not be repeated here.

[0320] In the display panel prepared in the embodiment of the present application, since the aperture ratio of the portion of the display panel located in the first display area AA1 is different from the aperture ratio of the portion of the display panel located in the second display area AA2, there may be a difference in display brightness between the first display area AA1 and the second display area AA2. By providing an optical adjustment layer 3 in each sub-pixel, the thickness of at least a portion of the optical adjustment layer 3 is different, and display light forms a microcavity effect between the first electrode 1 and the second electrode 6. The different thicknesses of the optical adjustment layer 3 result in different effective cavity lengths of the microcavity, thereby adjusting the brightness of different areas by adjusting the strength of the microcavity effect, so that the influence of the microcavity effect on the brightness is balanced with the influence of the aperture ratio on the brightness. Ultimately, the display brightness of the portion of the display panel located in the first display area AA1 is consistent with the display brightness of the portion of the display panel located in the second display area AA2, thereby improving the brightness uniformity of the display panel and enhancing the display effect.

[0321] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A display panel, wherein: include: A first display area and a second display area; the first display area and the second display area both include a driving substrate and a plurality of pixel units arranged in an array on the driving substrate, the pixel unit includes a plurality of sub-pixels, and the sub-pixels include: A first electrode configured to reflect light; An optical adjustment layer, located on one side of the first electrode; a light-emitting functional layer, located on a side of the optical adjustment layer away from the first electrode; A second electrode, covering the light-emitting functional layer, and configured to transmit and reflect light; For the sub-pixels of the same color, Among them, d1 is the distance between the first electrode and the second electrode of the sub-pixel in the first display area, N1 is the effective refractive index between the first electrode and the second electrode of the sub-pixel in the first display area, n is a positive integer, and λ is the peak wavelength of the color; d2 is the distance between the first electrode and the second electrode of the sub-pixel in the second display area, and N2 is the effective refractive index between the first electrode and the second electrode of the sub-pixel in the second display area.

2. The display panel according to claim 1, wherein: In the second display area, for the sub-pixels of the same color, 3. The display panel according to claim 1, wherein: For the sub-pixels of the same color, the effective refractive index between the first electrode and the second electrode of the sub-pixel in the first display area is equal to the effective refractive index between the first electrode and the second electrode of the sub-pixel in the second display area, and the distance between the first electrode and the second electrode of the sub-pixel in the first display area is not equal to the distance between the first electrode and the second electrode of the sub-pixel in the second display area.

4. The display panel according to claim 1, wherein: For the sub-pixels of the same color, the distance between the first electrode and the second electrode of the sub-pixel in the first display area is equal to the distance between the first electrode and the second electrode of the sub-pixel in the second display area; the effective refractive index between the first electrode and the second electrode of the sub-pixel in the first display area is not equal to the effective refractive index between the first electrode and the second electrode of the sub-pixel in the second display area.

5. The display panel according to claim 1, wherein: The first display area divides the second display area into a discontinuous third display sub-area and a fourth display sub-area; The first display area includes a middle area and edge areas located on both sides of the middle area, and the edge areas are arranged adjacent to the third display sub-area or the fourth display sub-area; In the first display area, along the direction from the middle area to the edge area, for the sub-pixels with the same color, Gradually increase or decrease.

6. The display panel according to claim 5, wherein: Along the direction from the first display area to the third display sub-area, the number of the sub-pixels arranged in the first display area is less than or equal to 10.

7. The display panel according to claim 3, wherein: The optical adjustment layer includes a first optical adjustment layer and a second optical adjustment layer, the first optical adjustment layer is located in the first display area, the second optical adjustment layer is located in the second display area, and for some of the sub-pixels of the same color, the first optical adjustment layer and the second optical adjustment layer have different thicknesses.

8. The display panel according to any one of claims 1 to 7, wherein: A reflectivity of a portion of the driving substrate located in the first display area is smaller than a reflectivity of a portion of the driving substrate located in the second display area.

9. The display panel according to claim 8, wherein: The sub-pixel comprises an auxiliary electrode, and the auxiliary electrode is located between the first electrode and the optical adjustment layer; The transmittance of a portion of the auxiliary electrode located in the first display area is less than or equal to the transmittance of a portion of the auxiliary electrode located in the second display area.

10. The display panel according to claim 7, wherein: For the sub-pixels of the same color, the refractive index of the first optical adjustment layer is less than or equal to the refractive index of the second optical adjustment layer.

11. The display panel according to claim 7, wherein: The thickness of the first optical adjustment layer or the second optical adjustment layer is zero.

12. The display panel according to claim 7, wherein: The pixel unit includes a first sub-pixel, a second sub-pixel and a third sub-pixel, and the second optical adjustment layer includes a first optical adjustment pattern, a second optical adjustment pattern and a third optical adjustment pattern; In the second display area, the first optical adjustment pattern is located between the light-emitting function layer of the first sub-pixel and the first electrode, the second optical adjustment pattern is located between the light-emitting function layer of the second sub-pixel and the first electrode, and the third optical adjustment pattern is located between the light-emitting function layer of the third sub-pixel and the first electrode; Wherein, thicknesses of the first optical adjustment pattern, the second optical adjustment pattern and the third optical adjustment pattern are at least partially different.

13. The display panel according to claim 12, wherein: Refractive indices of the first optical adjustment pattern, the second optical adjustment pattern, and the third optical adjustment pattern are at least partially different.

14. The display panel according to claim 13, wherein: The first optical adjustment pattern, the second optical adjustment pattern and the third optical adjustment pattern all include at least a conductive sublayer; the conductive sublayer is electrically connected to the first electrode, and there is a gap between the conductive sublayers in two adjacent sub-pixels; Wherein, at least one of the first optical adjustment pattern, the second optical adjustment pattern and the third optical adjustment pattern further includes an inorganic sublayer, and the inorganic sublayer is located between the conductive sublayer and the first electrode.

15. The display panel according to claim 14, wherein: In the second display area, along a direction perpendicular to the light-emitting functional layer, a distance between the first electrode and the second electrode in the first sub-pixel is a first distance; a distance between the first electrode and the second electrode in the second sub-pixel is a second distance; and a distance between the first electrode and the second electrode in the third sub-pixel is a third distance; The first distance, the second distance and the third distance are at least partially unequal.

16. The display panel according to claim 14, wherein: The first optical adjustment pattern includes a first inorganic sublayer, a second inorganic sublayer, a third inorganic sublayer and the conductive sublayer which are sequentially arranged on the first electrode; In the first sub-pixel of the second display area, the first optical adjustment pattern further includes a first through hole, the first through hole penetrating the first inorganic sub-layer, the second inorganic sub-layer, and the second inorganic sub-layer. layer and the third inorganic sublayer, and the conductive sublayer is electrically connected to the first electrode through the first through hole.

17. The display panel according to claim 16, wherein: The second optical adjustment pattern includes the first inorganic sublayer, the second inorganic sublayer and the conductive sublayer sequentially disposed on the first electrode; In the second sub-pixel of the second display area, the second optical pattern further includes a second through hole, the second through hole penetrates the first inorganic sub-layer and the second inorganic sub-layer, and the conductive sub-layer is electrically connected to the first electrode through the second through hole.

18. The display panel according to claim 17, wherein: The third optical adjustment pattern includes the conductive sublayer disposed on the first electrode, and in the third sub-pixel of the second display area, the conductive sublayer is in contact with the first electrode.

19. The display panel according to claim 18, wherein: The refractive indexes of the first inorganic sublayer, the second inorganic sublayer, the third inorganic sublayer and the conductive sublayer are all different.

20. The display panel according to claim 19, wherein: Along the direction away from the first electrode, the refractive indexes of the first inorganic sublayer, the second inorganic sublayer, the third inorganic sublayer and the conductive sublayer gradually increase.

21. The display panel according to claim 12, wherein: The first optical adjustment layer includes a fourth optical adjustment pattern, a fifth optical adjustment pattern and a sixth optical adjustment pattern; In the first display area, the fourth optical adjustment pattern is located between the light-emitting function layer of the first sub-pixel and the first electrode, the fifth optical adjustment pattern is located between the light-emitting function layer of the second sub-pixel and the first electrode, and the sixth optical adjustment pattern is located between the light-emitting function layer of the third sub-pixel and the first electrode; Wherein, the thicknesses of the fourth optical adjustment pattern, the fifth optical adjustment pattern and the sixth optical adjustment pattern are substantially the same.

22. The display panel according to claim 21, wherein: The fourth optical adjustment pattern, the fifth optical adjustment pattern and the sixth optical adjustment pattern are made of the same material, and are all light-transmitting conductive materials; In the first sub-pixel of the first display area, the fourth optical adjustment pattern and The first electrode is contact-connected; in the second sub-pixel, the fifth optical adjustment pattern is contact-connected to the first electrode; in the third sub-pixel, the sixth optical adjustment pattern is contact-connected to the first electrode.

23. The display panel according to claim 9, wherein: The auxiliary electrode includes a first auxiliary sub-electrode and a second auxiliary sub-electrode, the first auxiliary sub-electrode is in contact with the first electrode, and the second auxiliary sub-electrode is in contact with the optical adjustment layer; The hardness of the material of the first auxiliary sub-electrode is greater than the hardness of the material of the first electrode.

24. The display panel according to claim 23, wherein: The sub-pixel further includes an auxiliary conduction layer and a protective layer, the auxiliary conduction layer includes a third auxiliary sub-electrode and a fourth auxiliary sub-electrode, the third auxiliary sub-electrode is located between the first electrode and the fourth auxiliary sub-electrode, and the fourth auxiliary sub-electrode is in contact and conduction with the driving substrate; the protective layer covers the side of the first electrode; The material of the third auxiliary sub-electrode is the same as that of the first auxiliary sub-electrode.

25. The display panel according to claim 8, wherein: The driving substrate includes a plurality of metal layers, each of which includes a plurality of conductive patterns; the first display area includes a first region, the second display area includes a second region, and the first region and the second region have the same shape and area; For at least one of the metal layers, an area of ​​a portion of the conductive pattern located in the first region is smaller than an area of ​​a portion of the conductive pattern located in the second region.

26. The display panel according to any one of claims 9 to 25, wherein: The display panel further includes a filling layer and a pixel defining layer, wherein the filling layer is disposed between the first electrodes of two adjacent sub-pixels, and the optical adjustment layer at least covers a portion of the filling layer; and the pixel defining layer is located on a side of all the optical adjustment layers away from the first electrode; The pixel defining layer includes a plurality of first grooves arranged in an array, and at least a portion of the light-emitting functional layer is disposed in the first groove; an area enclosed by an orthographic projection of an outer contour of the first groove on the driving substrate falls within an orthographic projection of the optical adjustment layer on the driving substrate.

27. The display panel according to claim 26, wherein: For the first grooves of the light-emitting functional layer of the same color, the size of the plane figure of the portion of the first groove located in the first display area is greater than or equal to the size of the plane figure of the portion of the first groove located in the second display area.

28. The display panel according to claim 27, wherein: The pixel defining layer includes a plurality of second grooves, wherein the second grooves are arranged between two adjacent first grooves, and the depth of the second grooves along a direction perpendicular to the driving substrate is less than or equal to the depth of the first grooves along the direction perpendicular to the driving substrate.

29. The display panel according to claim 28, wherein: The light-emitting functional layer includes a light-emitting sublayer, and the second groove is configured to prevent the light-emitting sublayers of two adjacent sub-pixels from mixing colors.

30. The display panel according to claim 28, wherein: The light-emitting functional layer includes at least two light-emitting sublayers, a charge generation layer is arranged between two adjacent light-emitting sublayers, and the second groove is configured to separate the charge generation layers of two adjacent sub-pixels.

31. The display panel according to any one of claims 27 to 30, wherein: The display panel further includes an encapsulation layer, a color filter layer and a lens layer, wherein the encapsulation layer covers all the second electrodes, the encapsulation layer includes at least two encapsulation sublayers, and the color filter layer is located between two of the encapsulation sublayers; The lens layer includes a plurality of lens structures, and the lens structures are arranged in the first display area and / or the second display area. The lens structures are located on a side of the color filter layer away from the first electrode.

32. A display device, wherein: Comprising a display panel as described in any one of claims 1-31.

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