Display panel and display device

Abstract

The invention discloses a display panel and a display device, and the display panel comprises a substrate; a first conductive layer; the pixel definition layer comprises a pixel opening; at least part of the first electrode layer is located in the pixel opening, and the first electrode layer comprises a plurality of first electrode blocks which are insulated from one another; the first organic layer is arranged between the first conductive layer and the first electrode block, the first organic layer comprises an open hole, and the open hole exposes the first conductive layer, so that the first electrode block is connected with the first conductive layer through the open hole; and in the first direction and / or the second direction, the orthographic projection of the opening on the substrate is symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening on the substrate. By limiting the orthographic projection of the opening on the substrate along the first direction and / or the second direction and symmetrically arranging the orthographic projection of the corresponding pixel opening on the substrate, the symmetry and flatness of the first conductive layer in the area corresponding to the pixel opening are improved, and the display effect of the display panel is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of electronic products, and in particular relates to a display panel and a display device. Background Art

[0002] With the advancement of technology, digital display panels such as smart phones and tablet computers have been widely used, among which the display screen is an indispensable interpersonal communication interface in these display panels. OLED (Organic Light Emitting Diode) display panels have the advantages of self-luminescence, energy saving and consumption reduction, bendability, good flexibility, etc., and the display panel that realizes display does not require a backlight source, has the characteristics of fast response speed and good display effect, and has attracted the attention of users and is widely used in terminal products such as smart phones and tablet computers.

[0003] However, due to the structural limitations of existing display panels, the display effect of the display panels cannot meet the requirements.

[0004] Therefore, a new display panel and display device are urgently needed. Summary of the invention

[0005] Embodiments of the present invention provide a display panel and a display device, which improve the symmetry and flatness of the first conductive layer in the area corresponding to the pixel opening by limiting the orthographic projection of the opening on the substrate to be symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening on the substrate along a first direction and / or a second direction, thereby improving the display effect of the display panel.

[0006] In a first aspect, an embodiment of the present invention provides a display panel, comprising: a substrate; a first conductive layer, disposed on one side of the substrate; a pixel definition layer, disposed on a side of the first conductive layer away from the substrate, the pixel definition layer comprising a pixel opening; a first electrode layer, at least partially located in the pixel opening, the first electrode layer comprising a plurality of mutually insulated first electrode blocks; a first organic layer, disposed between the first conductive layer and the first electrode block, the first organic layer comprising an opening, the opening exposing the first conductive layer so that the first electrode block is connected to the first conductive layer through the opening; along a first direction, and / or a second direction, the orthographic projection of the opening on the substrate is symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening on the substrate, the first direction intersects with the second direction, and the first direction and the second direction are both parallel to the plane where the substrate is located.

[0007] In a second aspect, an embodiment of the present invention provides a display device, including a display panel, wherein the display panel is the display panel in any of the above embodiments.

[0008] Compared with the related art, the display panel provided by the embodiment of the present invention includes a substrate, a first conductive layer, a pixel definition layer, a first electrode layer and a first organic layer. An opening is arranged on the first organic layer so that the first electrode block is electrically connected to the first conductive layer through the opening. By limiting the positive projection of the opening on the substrate along the first direction and / or the second direction, it is symmetrically arranged about the center of the positive projection of the corresponding pixel opening on the substrate, that is, the first electrode block can be connected to the first conductive layer in the area corresponding to the pixel opening through the symmetrically arranged vias, without the need to additionally extend the first electrode layer and the first conductive layer to be electrically connected in the area outside the pixel opening, thereby improving the symmetry and flatness of the first conductive layer in the area corresponding to the pixel opening, thereby improving the flatness of the light-emitting layer located on the side of the first conductive layer away from the substrate, ensuring the consistency of light output at each position of the pixel opening, avoiding color difference and other problems due to the unevenness of the bottom first conductive layer, and improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 is a schematic structural diagram of a display panel provided according to an embodiment of the present invention;

[0011] Figure 2 An embodiment of the present invention provides Figure 1 The local schematic diagram of the A in the middle;

[0012] Figure 3 An embodiment of the present invention provides Figure 1 A top view of the center;

[0013] Figure 4 is a schematic structural diagram of a display panel provided according to another embodiment of the present invention;

[0014] Figure 5 An embodiment of the present invention provides Figure 4 The local schematic diagram of point B in the middle;

[0015] Figure 6 is a schematic diagram of the relative positions of a first electrode layer, a first organic layer, and a first conductive layer provided by an embodiment of the present invention;

[0016] Figure 7 is a schematic diagram of the relative positions of a first electrode layer, a first organic layer, and a first conductive layer provided by another embodiment of the present invention;

[0017] Figure 8 Schematic diagram of the relative positions of the first electrode layer, the first organic layer, and the first conductive layer provided by another embodiment of the present invention;

[0018] Figure 9 Schematic diagram of the structure of a display panel provided by another embodiment of the present invention;

[0019] Figure 10 Schematic diagram of the relative positions of the first electrode layer, the first organic layer, and the first conductive layer provided by another embodiment of the present invention;

[0020] Figure 11 Schematic diagram of the relative positions of the first electrode layer, the first organic layer, and the first conductive layer provided by another embodiment of the present invention;

[0021] Figure 12 Schematic diagram of the structure of a display panel provided by another embodiment of the present invention;

[0022] Figure 13 Provided by an embodiment of the present invention Figure 12 Top view schematic diagram at position E in

[0023] Figure 14 Provided by an embodiment of the present invention Figure 12 Top view schematic diagram at position J in

[0024] Figure 15 Schematic diagram of the structure of a display device provided by an embodiment of the present invention. Detailed implementation manners

[0025] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without some of these specific details. The description of the embodiments is merely provided to better understand the present invention by showing examples of the present invention.

[0026] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0027] In the prior art, in order to achieve signal transmission to the first electrode block in the display panel, it is necessary to make the first electrode block extend an additional part in a direction away from the pixel opening, so as to be electrically connected to the first conductive layer through a via hole in the first organic layer provided under the first electrode block. However, through research and experiments by the inventor, it is found that the above setting form will cause the film layer flatness in the light-emitting area corresponding to the pixel opening not to meet the requirements, affecting the light-emitting effect of the display panel.

[0028] To solve the above problems, the display panel provided by the embodiment of the present invention is connected between the symmetrically arranged via holes and the first conductive layer in the area corresponding to the pixel opening, and there is no need to additionally extend the first electrode layer and the first conductive layer to be electrically connected in the area outside the pixel opening, improving the symmetry and flatness of the first conductive layer in the area corresponding to the pixel opening, and improving the display effect of the display panel.

[0029] To better understand the present invention, the following will be combined with Figures 1 to 15 the display panel and the display device according to the embodiment of the present invention are described in detail.

[0030] Please refer to Figures 1 to 3 , Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present invention; Figure 2 is a partial schematic diagram of Figure 1 at A in the present invention provided by an embodiment of the present invention; Figure 3 is a top view schematic diagram of Figure 1 at A in the present invention provided by an embodiment of the present invention.

[0031] An embodiment of the present invention provides a display panel, comprising: a substrate 1; a first conductive layer 5, disposed on one side of the substrate 1; a pixel definition layer 2, disposed on the side of the first conductive layer 5 away from the substrate 1, the pixel definition layer 2 comprising a pixel opening K1; a first electrode layer 3, at least partially located in the pixel opening K1, the first electrode layer 3 comprising a plurality of mutually insulated first electrode blocks 31; a first organic layer 4, disposed between the first conductive layer 5 and the first electrode layer 3, the first organic layer 4 comprising an opening K2, the opening K2 exposing the first conductive layer 5 so that the first electrode block 31 is connected to the first conductive layer 5 through the opening K2; along a first direction X, and / or a second direction Y, the orthographic projection of the opening K2 on the substrate 1 is symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening K1 on the substrate 1, the first direction X and the second direction Y intersect, and the first direction X and the second direction Y are both parallel to the plane where the substrate 1 is located.

[0032] The display panel provided by the embodiment of the present invention includes a substrate 1, a first conductive layer 5, a pixel definition layer 2, a first electrode block 31 and a first organic layer 4. An opening K2 is arranged on the first organic layer 4 so that the first electrode block 31 is electrically connected to the first conductive layer 5 through the opening K2. By limiting the orthographic projection of the opening K2 on the substrate 1 along the first direction X and / or the second direction Y, the orthographic projection of the opening K2 on the substrate 1 is symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening K1 on the substrate 1, that is, the first electrode block can be connected to the first conductive layer 5 in the area corresponding to the pixel opening K1 through the symmetrically arranged vias, without the need to additionally extend the first electrode block 31 and the first conductive layer 5 to be electrically connected in the area outside the pixel opening K1, thereby improving the symmetry and flatness of the first conductive layer 5 in the area corresponding to the pixel opening K1, thereby improving the flatness of the light-emitting layer 6 located on the side of the first conductive layer 5 away from the substrate 1, ensuring the consistency of light output at each position of the pixel opening K1, avoiding color difference and other problems caused by the unevenness of the bottom first conductive layer 5, and improving the display effect of the display panel.

[0033] It should be noted that, along the first direction X, and / or the second direction Y, the orthographic projection of the opening K2 on the substrate 1 is symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening K1 on the substrate 1. Specifically, it means that the orthographic projection of the opening K2 on the substrate 1 can be symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening K1 on the substrate 1 only along the first direction X. For example, when the first direction X refers to the horizontal direction in the figure, the orthographic projection of the opening K2 on the substrate 1 is symmetrically arranged up and down about the center of the orthographic projection of the corresponding pixel opening K1 on the substrate 1. Or, the orthographic projection of the opening K2 on the substrate 1 is symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening K1 on the substrate 1 only along the second direction Y. The second direction Y can refer to the vertical direction in the figure. Or, along both the first direction X and the second direction Y, the orthographic projection of the opening K2 on the substrate 1 is symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening K1 on the substrate 1. For example, the opening K2 can be arranged in a circular ring shape or the like around the center of the orthographic projection of the corresponding pixel opening K1 on the substrate 1.

[0034] Correspondingly, the orthographic projection of the first conductive layer 5 in the pixel opening K1 on the substrate 1 can be symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening K1 on the substrate 1. Since some of the first electrode blocks 31 need to extend into the vias to be electrically connected to the first conductive layer 5, by restricting the orthographic projection of the opening K2 on the substrate 1 to be symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening K1 on the substrate 1 along the first direction X, and / or the second direction Y, the structural symmetry of the first electrode blocks 31 about the center of the corresponding pixel opening K1 can also be correspondingly realized along the first direction X, and / or the second direction Y, improving the uniformity of the light-emitting effect.

[0035] Through the above opening method, the corresponding area of the pixel opening K1, that is, the light-emitting effective area, can be symmetrically arranged along the first direction X, and / or the second direction Y, and there is a first conductive layer 5 for support under the first organic layer 4 of the opening K2, which is beneficial to the planarization of the film layer in the corresponding area of the pixel opening K1.

[0036] Optionally, the first direction X and the second direction Y are perpendicular to each other.

[0037] In this embodiment, the substrate 1 can be a rigid substrate, such as a glass substrate; or it can be a flexible substrate, and its material can be polyimide, polystyrene, polyethylene terephthalate, parylene, polyethersulfone or polyethylene naphthalate. The substrate 1 is mainly used to support the devices arranged thereon.

[0038] Optionally, a light-emitting layer 6 and a second electrode layer 7 are further stacked on the side of the first electrode block 31 away from the substrate 1.

[0039] Optionally, the light-emitting layer 6 includes one or more of an electron injection layer, an electron transport layer, a hole blocking layer, a light-emitting material layer, an electron blocking layer, a hole transport layer, and a hole injection layer. Specifically, it can be selected according to the specific type of the light-emitting layer 6, and there is no special limitation. The electron injection layer, the electron transport layer, and the hole blocking layer can be disposed between the second electrode layer 7 and the light-emitting material layer. The electron blocking layer, the hole transport layer, and the hole injection layer can be disposed between the first electrode block 31 and the light-emitting material layer.

[0040] The material of the first electrode block 31 is generally a material with a high work function to improve the hole injection efficiency, and can be gold (Au), platinum (Pt), titanium (Ti), silver (Ag), indium tin oxide (ITO), indium zinc oxide (IZO), or a transparent conductive polymer (such as polyaniline), etc. For example, the first electrode block 31 can be made of an ITO-Ag-ITO composite material, and there is no special limitation.

[0041] The material of the second electrode layer 7 can be one of metal materials such as silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca), or indium (In), and can also be an alloy of the foregoing metal materials, such as a magnesium-silver alloy (Mg / Ag) or a lithium-aluminum alloy (Li / Al). In this regard, this embodiment is not limited.

[0042] Optionally, both the pixel definition layer 2 and the first organic layer 4 can include organic materials. For example, the material of any one of the pixel definition layer 2 and the first organic layer 4 can be hexamethyldisiloxane, epoxy resin, or polyimide (PI), and can also be other silicone-based glue materials with a light transmittance of more than 90%, or other organic glue materials with a slightly lower light transmittance (greater than 80%) and a slightly higher flexural strength. In this regard, this embodiment is not limited.

[0043] Of course, according to actual needs, the pixel definition layer 2 can also be prepared from inorganic materials, and there is no special limitation.

[0044] Optionally, the first conductive layer 5 can be made of a metal material, such as metal materials such as molybdenum, titanium, aluminum, and silver, or can also be made of other materials. For example, the first conductive layer 5 can be prepared from ITO (indium tin oxide) material. ITO has a high light transmittance and can effectively improve the light transmittance of the display panel and ensure the display effect.

[0045] Please refer to Figures 1 to 3 , in some alternative embodiments, the orthographic projection of the opening K2 on the substrate 1 is a solid figure.

[0046] It can be understood that since the orthographic projection of the opening K2 on the substrate 1 is a solid figure, in order to achieve the central symmetry setting of the orthographic projection of the opening K2 on the substrate 1 about the center of the orthographic projection of the corresponding pixel opening K1 on the substrate 1 along the first direction X and / or the second direction Y, the opening K2 with a solid orthographic projection needs to cover the center of the orthographic projection of the pixel opening K1 on the substrate 1, and the center of the orthographic projection of the opening K2 on the substrate 1 coincides with the center of the orthographic projection of the pixel opening K1 on the substrate 1.

[0047] For example, the orthographic projection pattern of the opening K2 on the substrate 1 can be in the shape of a circle, a rectangle, etc. It should be noted that when the orthographic projection of the opening K2 on the substrate 1 is centrally symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening K1 on the substrate 1 in the first direction X and the second direction Y, the orthographic projection pattern of the opening K2 on the substrate 1 needs to be a centrally symmetric figure to achieve the symmetric arrangement in the first direction X and the second direction Y.

[0048] Optionally, the orthographic projection of the pixel opening K1 on the substrate 1 is rectangular, the orthographic projection pattern of the opening K2 on the substrate 1 is correspondingly rectangular, and is concentrically arranged with the orthographic projection of the pixel opening K1. Each side of the orthographic projection of the rectangular opening K2 on the substrate 1 is correspondingly parallel to each side of the orthographic projection of the rectangular pixel opening K1 on the substrate 1.

[0049] Of course, the orthographic projection pattern of the pixel opening K1 on the substrate 1 and the orthographic projection pattern of the opening K2 on the substrate 1 can also adopt other shapes, not limited to the above embodiments, and the orthographic projection pattern of the pixel opening K1 on the substrate 1 and the orthographic projection pattern of the opening K2 on the substrate 1 can adopt different patterns. For example, when the orthographic projection pattern of the pixel opening K1 on the substrate 1 is rectangular, the orthographic projection pattern of the opening K2 on the substrate 1 can be circular.

[0050] Please refer to Figures 1 to 3 , in some alternative embodiments, the opening K2 includes a first sub-opening K21, and the orthographic projection of the first sub-opening K21 on the substrate 1 is at least one of a polygon and a curved polygon.

[0051] In this embodiment, the first sub-opening K21 is the opening K2 corresponding to the solid orthographic projection on the substrate 1. The orthographic projection of the first sub-opening K21 on the substrate 1 is a polygon, for example, a rectangle, a rhombus, etc. in quadrilaterals, or a pentagon, a hexagon, etc. with more straight sides. When the orthographic projection of the first sub-opening K21 on the substrate 1 is a curved polygon, the curved polygon can specifically include shapes completely formed by curved sides such as a circle and an ellipse, as well as a curved trapezoid or a similar shape including at least one curved side.

[0052] In some alternative embodiments, the ratio of the orthographic projection area of the opening K2 on the substrate 1 to the orthographic projection area of the corresponding pixel opening K1 on the substrate 1 is greater than or equal to 2:3, or the ratio of the orthographic projection area of the opening K2 on the substrate 1 to the orthographic projection area of the corresponding pixel opening K1 on the substrate 1 is less than or equal to 1:3.

[0053] It should be noted that the first electrode block 31 may include a part located within a portion of the opening K2 and another part outside the opening K2. Due to the presence of the opening K2, there is a certain height difference between these two parts. In this embodiment, the size of the opening K2 can be adjusted to increase as much as possible the part of the first electrode block 31 located within a portion of the opening K2 or to increase as much as possible the other part of the first electrode block 31 outside the opening K2, so as to improve the overall flatness of the first electrode block 31 and reduce the influence of the opening K2 on the flatness of the first electrode block 31.

[0054] In this embodiment, when the ratio of the orthographic projection area of the opening K2 on the substrate 1 to the orthographic projection area of the corresponding pixel opening K1 on the substrate 1 is greater than or equal to 2:3, correspondingly, the proportion of the first electrode block 31 that sinks into a part of the opening K2 is larger. And the larger the proportion of the first electrode block 31 that sinks into a part of the opening K2, the smaller the proportion of the other part of the first electrode block 31. As a result, the influence on the overall flatness of the first electrode block 31 due to the height difference between the two is smaller.

[0055] Optionally, the ratio of the orthographic projection area of the opening K2 on the substrate 1 to the orthographic projection area of the corresponding pixel opening K1 on the substrate 1 may be equal to 2:3, 3:4, 4:5, 5:6, 7:8, etc., and can be specifically selected according to actual process requirements.

[0056] Similarly, when the ratio of the orthographic projection area of the opening K2 on the substrate 1 to the orthographic projection area of the corresponding pixel opening K1 on the substrate 1 is less than or equal to 1:3, because the opening K2 is small, correspondingly, the proportion of the first electrode block 31 that sinks into a part of the opening K2 is smaller. And the larger the proportion of the first electrode block 31 that sinks into a part of the opening K2, the greater the difference in the proportion between the two, and the better the overall flatness of the first electrode block 31.

[0057] Optionally, the ratio of the orthographic projection area of the opening K2 on the substrate 1 to the orthographic projection area of the corresponding pixel opening K1 on the substrate 1 may be equal to 1:3, 1:4, 1:5, 1:6, 1:8, etc., and can be specifically selected according to actual process requirements.

[0058] Please refer to Figures 4 to 7 , Figure 4 which is a schematic structural diagram of a display panel according to another embodiment of the present invention; Figure 5An embodiment of the present invention provides Figure 4 A partial schematic view at position B in

[0059] Figure 6 A schematic diagram of the relative positions of the first electrode block 31, the first organic layer 4, and the first conductive layer 5 provided by an embodiment of the present invention; Figure 7 A schematic diagram of the relative positions of the first electrode block 31, the first organic layer 4, and the first conductive layer 5 provided by another embodiment of the present invention.

[0060] In some alternative embodiments, the opening K2 includes a second sub-opening K22, and the orthographic projection of the second sub-opening K22 on the first conductive layer 5 has an annular structure.

[0061] It should be noted that the annular structure in this embodiment may be a closed annular structure or an annular structure with an opening. The orthographic projection of the second sub-opening K22 on the first conductive layer 5 needs to at least partially surround the center of the orthographic projection of the pixel opening K1 on the substrate 1 to ensure symmetry.

[0062] Please refer to Figures 6 to 7 , optionally, the orthographic projection of the second sub-opening K22 on the substrate 1 has a rectangular annular structure or a circular ring structure. Correspondingly, the orthographic projection pattern of the pixel opening K1 on the substrate 1 can be rectangular or circular, that is, the orthographic projection pattern of the pixel opening K1 on the substrate 1 can match the orthographic projection pattern of the second sub-opening K22 on the substrate 1, which is convenient for preparation. For example, when the orthographic projection pattern of the pixel opening K1 on the substrate 1 is rectangular, the orthographic projection of the second sub-opening K22 on the substrate 1 has a rectangular annular structure. Or, the orthographic projection pattern of the pixel opening K1 on the substrate 1 can also be different from the orthographic projection pattern of the second sub-opening K22 on the substrate 1. For example, when the orthographic projection pattern of the pixel opening K1 on the substrate 1 is rectangular, the orthographic projection of the second sub-opening K22 on the substrate 1 has a circular ring structure.

[0063] Please refer to Figure 8 , Figure 8 A schematic diagram of the relative positions of the first electrode block 31, the first organic layer 4, and the first conductive layer 5 provided by yet another embodiment of the present invention. In some alternative embodiments, corresponding to one first electrode block 31, the first organic layer 4 includes at least two circles of second sub-openings K22, and the second sub-openings K22 are concentrically arranged.

[0064] It can be understood that the more turns of the second sub-hole K22 are set, the larger the contact area between the first electrode block 31 and the first conductive layer 5, and the better the electrical connection effect. However, considering that the first electrode block 31 corresponding to the second sub-hole K22 will sink, therefore, the more turns of the second sub-hole K22 are set, the more likely it is to affect the flatness of the overall first electrode block 31, and further affect the flatness of the light-emitting layer 6 thereon. Therefore, the number of turns of the second sub-hole K22 should not be too many. Optionally, for one first electrode block 31, the first organic layer 4 includes two, three or four turns of the second sub-hole K22, and the second sub-holes K22 are concentrically arranged to ensure the symmetry of the second sub-holes K22 and facilitate unified preparation, reducing the preparation difficulty.

[0065] Please refer to Figure 8 , optionally, the first organic layer 4 includes at least two turns of second sub-holes K22 having a rectangular structure.

[0066] Please refer to Figures 9 to 10 , Figure 9 is a schematic structural diagram of a display panel provided by another embodiment of the present invention; Figure 10 is a schematic diagram of the relative positions of the first electrode block 31, the first organic layer 4, and the first conductive layer 5 provided by another embodiment of the present invention. In some alternative embodiments, along the direction perpendicular to the plane of the substrate 1, the pixel opening K1 and the second sub-hole K22 do not overlap.

[0067] It can be understood that the size of the first electrode block 31 is usually larger than the size of the pixel opening K1. In order to avoid affecting the flatness of the film layers such as the first electrode block 31 and the light-emitting layer 6 in the pixel opening K1 due to the opening of the second sub-hole K22, this embodiment limits that along the direction perpendicular to the plane of the substrate 1, the pixel opening K1 and the second sub-hole K22 do not overlap, that is, the second sub-hole K22 is opened on the first organic layer 4 located outside the pixel opening K1, and the first electrode block 31 and the first conductive layer 5 are connected and conducted through the second sub-hole K22 outside the pixel opening K1 to improve the light-emitting effect at the pixel opening K1.

[0068] Optionally, along the direction perpendicular to the plane of the substrate 1, the orthographic projection of the second sub-hole K22 on the substrate 1 is arranged around the orthographic projection of the pixel opening K1 on the substrate 1, that is, the size of the second sub-hole K22 is larger than the size of the pixel opening K1.

[0069] Please refer to Figure 11 , Figure 11 is a schematic diagram of the relative positions of the first electrode block 31, the first organic layer 4, and the first conductive layer 5 provided by another embodiment of the present invention; In some alternative embodiments, around the center of the first electrode block 31, the first organic layer 4 includes a plurality of third sub-holes K23 arranged at intervals, and the center connection lines of the plurality of third sub-holes K23 are in a polygon or a circle.

[0070] It should be noted that, in this embodiment, the third sub-holes K23 are spaced apart and non-continuous. The number of the third sub-holes K23 can be an even number, for example, two, four, six, eight, etc., so that the orthographic projection of the third sub-holes K23 on the substrate 1 along the first direction X and / or the second direction Y is centrosymmetrically arranged about the center of the orthographic projection of the corresponding pixel opening K1 on the substrate 1.

[0071] The central connection lines of the multiple third sub-holes K23 form a polygon or a circle, that is, the respective third sub-holes K23 can be arranged in a ring shape. For example, the central connection lines of the multiple third sub-holes K23 form a rectangle, and the centers of the multiple third sub-holes K23 are all located on the sides of the virtual rectangle, so as to improve the regularity and symmetry of the arrangement of the third sub-holes K23.

[0072] Optionally, along the extension direction of the side of the figure formed by the central connection lines of the third sub-holes K23, the distance between adjacent third sub-holes K23 is equal, so as to improve the uniformity of the distribution of the third sub-holes K23.

[0073] In some alternative embodiments, the orthographic projection of the third sub-hole K23 on the substrate 1 is at least one of a polygon and a curved polygon.

[0074] Optionally, the orthographic projection of the third sub-hole K23 on the substrate 1 is a polygon, for example, a rectangle, a rhombus, etc. in a quadrilateral, or a pentagon, a hexagon, etc. with more straight sides. When the orthographic projection of the third sub-hole K23 on the substrate 1 is a curved polygon, the curved polygon can specifically include shapes completely formed by curved sides such as a circle and an ellipse, as well as a curved trapezoid or a similar shape including at least one curved side.

[0075] It should be noted that the above embodiments provide three different forms of the opening K2, namely the first sub-hole K21, the second sub-hole K22, and the third sub-hole K23. Any one of the first sub-hole K21, the second sub-hole K22, and the third sub-hole K23 can be applied to the first organic layer 4 provided in this embodiment, or any two or three of the first sub-hole K21, the second sub-hole K22, and the third sub-hole K23 can be applied to the first organic layer 4 provided in this embodiment at the same time, and can be selected according to actual needs without special limitations.

[0076] Please refer to Figure 6 , in some alternative embodiments, the first conductive layer 5 includes a first conductive block 51, and the orthographic projection of the first conductive block 51 on the substrate 1 covers the orthographic projection of the pixel opening K1 on the substrate 1; the first electrode block 31 and the first conductive block 51 are electrically connected through the opening K2.

[0077] In this embodiment, the first conductive block 51 is used for electrically connecting to the first electrode block 31 to transmit a voltage signal to the first electrode block 31, and the orthographic projection of the first conductive block 51 on the substrate 1 covers the orthographic projection of the pixel opening K1 on the substrate 1, that is, the size of the first conductive block 51 is greater than or equal to the size of the pixel opening K1, so as to ensure that there is a first conductive block 51 supporting below the first electrode block 31 located within the pixel opening K1, which is beneficial to planarization.

[0078] Optionally, along the first direction X and / or the second direction Y, the orthographic projection of the first conductive block 51 on the substrate 1 is symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening K1 on the substrate 1, so as to facilitate the connection between the first conductive block 51 and the first electrode block 31.

[0079] Please refer to Figure 6 , optionally, the first conductive layer 5 further includes a third conductive block 52, and the third conductive block 52 is adjacent to the first conductive block 51 for transmitting other signals.

[0080] Please refer to Figures 12 to 13 , Figure 12 is a schematic structural diagram of a display panel provided according to another embodiment of the present invention; Figure 13 is provided by an embodiment of the present invention Figure 12 a top view schematic diagram at E in ; in some optional embodiments, the display panel further includes a second conductive layer 8, and the second conductive layer 8 is located between the substrate 1 and the first conductive layer 5; the second conductive layer 8 includes a second conductive block 81, and along the direction perpendicular to the plane where the substrate 1 is located, the second conductive block 81 at least partially overlaps with the pixel opening K1; along the first direction X and / or the second direction Y, the orthographic projection of the second conductive block 81 on the substrate 1 is symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening K1 on the substrate 1.

[0081] It can be understood that since the display panel needs to be provided with various different signal lines or devices such as transistors, etc., thus, the display panel usually includes multiple conductive layers. In this embodiment, the second conductive block 81 of the second conductive layer 8 is located below the first conductive block 51, and along the direction perpendicular to the plane where the substrate 1 is located, the second conductive block 81 at least partially overlaps with the pixel opening K1, that is, the symmetry of the second conductive block 81 will also affect the planarization of the inner film layers such as the first electrode block 31 and the light-emitting layer 6 located above it within the pixel opening K1.

[0082] In this embodiment, by restricting the center symmetry of the orthographic projection of the second conductive block 81 on the substrate 1 with respect to the orthographic projection of the corresponding pixel opening K1 on the substrate 1 along the first direction X and / or the second direction Y, the symmetry and flatness of each film layer in the area corresponding to the pixel opening K1 are further improved, ensuring the consistency of light emission at each position of the pixel opening K1, avoiding problems such as color difference caused by the unevenness of the bottom first conductive layer 5, and improving the display effect of the display panel.

[0083] In some alternative embodiments, the second conductive block 81 includes at least one of a data signal line and a power supply voltage signal line. For example, when the data signal lines extend along the second direction Y and are arranged at intervals along the first direction X, the orthographic projection of the data signal lines on the substrate 1 is symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening K1 on the substrate 1 along the first direction X and / or the second direction Y. Similarly, when the power supply voltage signal lines extend along the second direction Y and are arranged at intervals along the first direction X, the orthographic projection of the power supply voltage signal lines on the substrate 1 is symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening K1 on the substrate 1 along the first direction X and / or the second direction Y. Of course, the data signal lines and the power supply voltage signal lines may also extend along the first direction X or other directions, without special limitations, and can be set according to actual wiring needs.

[0084] Please refer to Figure 12 , in some alternative embodiments, the display panel further includes an array layer disposed between the substrate 1 and the first electrode block 31; along the direction away from the substrate 1, the array layer includes an active layer H, a gate layer G, a source layer S, a drain layer D, and a transition connection layer, wherein the source layer S and the drain layer D are at least partially arranged in the same layer; the first conductive layer 5 and the transition connection layer are arranged in the same layer, and the second conductive layer 8 and the source layer S are arranged in the same layer.

[0085] In this embodiment, the active layer H, the gate layer G, the source layer S, and the drain layer D can be used to form a transistor. The materials of the source layer S and the gate layer G can include one or a combination of molybdenum, titanium, aluminum, copper, etc. The gate layer G of the transistor is usually used to receive a control signal to turn the transistor on or off under the control of the control signal. One of the source layer S and the drain layer D of the transistor is connected to the first electrode block 31 to control the normal light emission of the light-emitting layer 6.

[0086] The transition connection layer can be used to connect one of the source layer S and the drain layer D to the first electrode block 31. The second conductive layer 8 can be made of the same material as the first conductive layer 5 to reduce costs. For example, the second conductive layer 8 can be made of a metal material, such as molybdenum, titanium, aluminum, silver and other metal materials, or other materials. For example, the second conductive layer 8 can also be made of ITO (Indium Tin Oxide) material. ITO has a high light transmittance, which can effectively improve the light transmittance of the display panel and ensure the display effect.

[0087] See also Figures 12 to 14 , Figure 14 An embodiment of the present invention provides Figure 12 In some optional embodiments, the display panel includes a first light-emitting structure F1 and a second light-emitting structure F2 with different light-emitting colors, the first light-emitting structure F1 and the second light-emitting structure F2 both include a first electrode block 31, and the orthographic projection areas of the first electrode block 31 in the first light-emitting structure F1 and the second light-emitting structure F2 on the substrate 1 are different; the orthographic projection area of ​​the opening K2 of the first organic layer 4 corresponding to the first light-emitting structure F1 and the orthographic projection area of ​​the opening K2 of the first organic layer 4 corresponding to the second light-emitting structure F2 on the substrate 1 are different.

[0088] It should be noted that, considering the requirements of pixel arrangement and other aspects, the light-emitting areas of the first light-emitting structure F1 and the second light-emitting structure F2 may be different. Correspondingly, the orthographic projection areas of the first electrode blocks 31 in the first light-emitting structure F1 and the second light-emitting structure F2 on the substrate 1 are also different. In this embodiment, the size of the corresponding opening K2 of the first organic layer 4 can be adjusted according to the size of the first electrode block 31, that is, the orthographic projection area of ​​the opening K2 of the first organic layer 4 corresponding to the first light-emitting structure F1 on the substrate 1 is different from the orthographic projection area of ​​the opening K2 of the first organic layer 4 corresponding to the second light-emitting structure F2 on the substrate 1. Figure 13 and Figure 14 As shown, it is ensured that the first electrode blocks 31 of different sizes can be effectively connected to the corresponding first conductive layer 5 through the opening K2.

[0089] For example, when the orthographic projection area of ​​the first electrode block 31 in the first light-emitting structure F1 on the substrate 1 is larger than the orthographic projection area of ​​the first electrode block 31 in the second light-emitting structure F2 on the substrate 1, the size of the opening K2 corresponding to the first light-emitting structure F1 can be increased accordingly, that is, the orthographic projection area of ​​the opening K2 of the first organic layer 4 corresponding to the first light-emitting structure F1 on the substrate 1 is larger than the orthographic projection area of ​​the opening K2 of the first organic layer 4 corresponding to the second light-emitting structure F2 on the substrate 1, so as to increase the contact area between the first electrode block 31 in the first light-emitting structure F1 and the first conductive layer 5.

[0090] Similarly, please refer to Figures 13 to 14 Figures 13 to 14 , if the orthographic projection area of the first electrode block 31 in the first light-emitting structure F1 on the substrate 1 is smaller than the orthographic projection area of the first electrode block 31 in the second light-emitting structure F2 on the substrate 1, the size of the opening K2 corresponding to the second light-emitting structure F2 can be correspondingly increased, that is, the orthographic projection area of the opening K2 of the first organic layer 4 corresponding to the first light-emitting structure F1 on the substrate 1 is smaller than the orthographic projection area of the opening K2 of the first organic layer 4 corresponding to the second light-emitting structure F2 on the substrate 1, so as to increase the contact area between the first electrode block 31 and the first conductive layer 5 in the second light-emitting structure F2.

[0091] Optionally, the display panel further includes a third light-emitting structure. The third light-emitting structure has a different light-emitting color from the first light-emitting structure F1 and the second light-emitting structure F2. The light-emitting area of the third light-emitting structure can be the same as that of either the first light-emitting structure F1 or the second light-emitting structure F2, or can be different from both. Specifically, it can be selected according to actual needs, and there is no special limitation. Correspondingly, the orthographic projection area of the opening K2 of the first organic layer 4 corresponding to the third light-emitting structure on the substrate 1 can also be adapted to the first electrode block 31 in the third light-emitting structure, and can be correspondingly increased or decreased.

[0092] Optionally, the first light-emitting structure F1, the second light-emitting structure F2, and the third light-emitting structure can be respectively one of a red light-emitting structure, a green light-emitting structure, and a blue light-emitting structure, so as to facilitate color mixing.

[0093] Please refer to Figure 15 Figure 15 , an embodiment of the present invention further provides a display device, including: a display panel, and the display panel is the display panel in any of the above embodiments.

[0094] The display device provided by the embodiment of the present invention has the technical effects of the technical solutions of the display panel in any of the above embodiments. The same or corresponding structures and the explanations of terms are not repeated here.

[0095] The display panel provided by the embodiment of the present invention can be an Organic Light-Emitting Diode (OLED for short) display panel, a Quantum Dot Light Emitting Diodes (QLED for short), or a Micro-OLED or Micro-LED micro flat display panel, etc.

[0096] The display device provided by the embodiments of the present invention can be applied to mobile phones and can also be any electronic product with a display function, including but not limited to the following categories: televisions, laptop computers, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, in-vehicle displays, medical devices, industrial control devices, touch interaction terminals, etc. The embodiments of the present invention do not make special limitations on this.

[0097] The above is only the specific implementation manner of the present invention. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, modules, and units can refer to the processes in the foregoing method embodiments and will not be repeated here. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention.

[0098] It should also be noted that the exemplary embodiments mentioned in the present invention describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above steps, that is, the steps can be executed in the order mentioned in the embodiments, can be different from the order in the embodiments, or several steps can be executed simultaneously.

Claims

1. A display panel, characterized in that, include: substrate; A first conductive layer is provided on one side of the substrate; A pixel definition layer, disposed on a side of the first conductive layer away from the substrate, the pixel definition layer comprising a pixel opening; A first electrode layer, at least partially located in the pixel opening, the first electrode layer comprising a plurality of mutually insulated first electrode blocks; a first organic layer, disposed between the first conductive layer and the first electrode block, the first organic layer comprising an opening, the opening exposing the first conductive layer so that the first electrode block is connected to the first conductive layer through the opening; Along the first direction, and / or the second direction, the orthographic projection of the opening on the substrate is symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening on the substrate, the first direction intersects with the second direction, and the first direction and the second direction are both parallel to the plane where the substrate is located.

2. The display panel according to claim 1, wherein The orthographic projection of the opening on the substrate is a solid figure.

3. The display panel according to claim 2, wherein The opening includes a first sub-hole, and an orthographic projection of the first sub-hole on the substrate is at least one of a polygon and a curved edge.

4. The display panel according to claim 2, wherein, The ratio of the orthographic projection area of ​​the opening on the substrate to the orthographic projection area of ​​the corresponding pixel opening on the substrate is greater than or equal to 2:3, or the ratio of the orthographic projection area of ​​the opening on the substrate to the orthographic projection area of ​​the corresponding pixel opening on the substrate is less than or equal to 1:

3.

5. The display panel according to claim 1, wherein The opening includes a second sub-hole, and the orthographic projection of the second sub-hole on the first conductive layer is a ring-shaped structure.

6. The display panel according to claim 5, wherein Corresponding to one first electrode block, the first organic layer includes at least two circles of the second sub-holes, and the second sub-holes are concentrically arranged.

7. The display panel according to claim 5, wherein, The orthographic projection of the second sub-hole on the substrate is a rectangular ring structure or a circular ring structure.

8. The display panel according to claim 5, characterized in that: Along a direction perpendicular to the plane where the substrate is located, the pixel opening and the second sub-hole do not overlap.

9. The display panel according to claim 1, wherein The first organic layer includes a plurality of third sub-holes arranged at intervals around the center of the first electrode block, and a line connecting the centers of the plurality of third sub-holes is polygonal or circular.

10. The display panel according to claim 9, characterized in that, The orthographic projection of the third sub-hole on the substrate is at least one of a polygon and a curved edge.

11. The display panel according to claim 1, wherein, The first conductive layer includes a first conductive block, and an orthographic projection of the first conductive block on the substrate covers an orthographic projection of the pixel opening on the substrate; The first electrode block and the first conductive block are electrically connected through the opening.

12. The display panel according to claim 1, wherein, Also comprising a second conductive layer, the second conductive layer being located between the substrate and the first conductive layer; The second conductive layer includes a second conductive block, and along a direction perpendicular to the plane where the substrate is located, the second conductive block and the pixel opening at least partially overlap; Along the first direction and / or the second direction, the orthographic projection of the second conductive block on the substrate is symmetrically arranged about the center of the orthographic projection of the corresponding pixel opening on the substrate.

13. The display panel according to claim 12, characterized in that, The second conductive block includes at least one of a data signal line and a power supply voltage signal line.

14. The display panel according to claim 12, wherein It also includes an array layer, wherein the array layer is disposed between the substrate and the first electrode layer; Along a direction away from the substrate, the array layer includes an active layer, a gate layer, a source layer, a drain layer, and a transition connection layer, wherein at least a part of the source layer and the drain layer are arranged in the same layer; The first conductive layer and the transition connection layer are arranged in the same layer, and the second conductive layer and the source layer are arranged in the same layer.

15. The display panel according to claim 1, wherein The display panel includes a first light-emitting structure and a second light-emitting structure with different light-emitting colors. Both the first light-emitting structure and the second light-emitting structure include the first electrode block, and the orthographic projection areas of the first electrode block on the substrate in the first light-emitting structure and the second light-emitting structure are different; The orthographic projection areas of the openings of the first organic layer corresponding to the first light-emitting structure on the substrate and the orthographic projection areas of the openings of the first organic layer corresponding to the second light-emitting structure on the substrate are different.

16. A display device, characterized in that, Comprising: A display panel, which is the display panel according to any one of claims 1 to 15.

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