Display panel and display apparatus

Abstract

Provided in the embodiments of the present application are a display panel and a display apparatus. The display panel comprises: a substrate; a pixel defining layer, which is arranged on the substrate and comprises a pixel defining portion and a pixel opening enclosed by the pixel defining portion; and an isolation assembly, which is arranged on the substrate and comprises a plurality of isolation portions symmetrically distributed around at least one pixel opening, wherein each isolation portion comprises a first surface facing the substrate and a second surface facing away from the substrate, and the orthographic projection of the first surface on the substrate is located in the orthographic projection of the second surface on the substrate. The present application can improve the display effect of the display panel.

Description

Display panel and display device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202310774270.7, filed on June 28, 2023, entitled “Display Panel and Display Device,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of display devices, and in particular to a display panel and a display device. Background Art

[0004] Organic Light-Emitting Diodes (OLEDs) are active light-emitting devices. Compared to traditional liquid crystal displays (LCDs), OLED display technology requires no backlight and is self-luminous. Furthermore, it can be made lighter and thinner, withstands a wider range of temperature fluctuations than LCD panels, and offers a wider viewing angle. OLED display panels are expected to become the next generation of flat-panel display technology after LCDs and are currently receiving the most attention.

[0005] An OLED display panel includes sub-pixels for emitting light of different colors. Crosstalk is prone to occur between different sub-pixels, affecting the display effect of the display panel.

[0006] Summary of the Invention

[0007] Embodiments of the present application provide a display panel and a display device, aiming to improve the display effect of the display panel.

[0008] An embodiment of the first aspect of the present application provides a display panel, which includes: a substrate; a pixel definition layer, which is arranged on the substrate, the pixel definition layer including a pixel defining portion and a pixel opening formed by the pixel defining portion; an isolation component, which is arranged on the substrate, the isolation component including a plurality of isolation portions, and the plurality of isolation portions are symmetrically distributed around at least one pixel opening, wherein the isolation portion includes a first surface facing the substrate and a second surface facing away from the substrate, and the orthographic projection of the first surface on the substrate is located within the orthographic projection of the second surface on the substrate.

[0009] An embodiment of the second aspect of the present application further provides a display device, which includes a display panel according to any one of the above-mentioned embodiments of the first aspect.

[0010] In the display panel of the embodiment of the present application, the display panel includes a substrate, a pixel definition layer and an isolation component. The pixel definition layer includes a pixel defining portion and a pixel opening, and the pixel opening is used to set a light-emitting unit to realize the light-emitting display of the display panel. The isolation portion of the isolation component is arranged around the pixel opening, and the first surface size of the isolation portion is less than or equal to the size of the second surface, so that the edge of the isolation portion can form a step difference or a concave, and the light-emitting material layer is easy to disconnect at the edge of the isolation portion, thereby improving the problem of easy crosstalk between adjacent pixel openings of the carriers, and improving the display effect of the display panel. In addition, a plurality of isolation portions are symmetrically distributed around at least one pixel opening, which, on the one hand, can make the carriers flow more evenly around the pixel opening, and on the other hand, can make the current in the electrode on the light-emitting unit more uniform around the pixel opening, further improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features.

[0012] FIG1 is a top view of a display panel provided by an embodiment of the first aspect of the present application;

[0013] FIG2 is a schematic diagram of a partially enlarged structure of a point Q in FIG1 in an example;

[0014] FIG3 is a cross-sectional view of the AA portion of FIG2 ;

[0015] FIG4 is an enlarged structural diagram of the isolation portion of the display panel in FIG3 ;

[0016] FIG5 is a schematic diagram of a partially enlarged structure in FIG2 in an example;

[0017] FIG6 is a schematic diagram of a partially enlarged structure of FIG2 in another example;

[0018] FIG7 is a schematic diagram of a partially enlarged structure in FIG2 in another example;

[0019] FIG8 is a schematic diagram of a partially enlarged structure of FIG2 in another example;

[0020] FIG9 is a schematic diagram of a partially enlarged structure in FIG2 in another example;

[0021] FIG10 is a schematic diagram of a partially enlarged structure of a point Q in FIG1 in another example;

[0022] FIG11 is a schematic diagram of a partially enlarged structure of a point Q in FIG1 in another example;

[0023] FIG12 is a schematic diagram of a partially enlarged structure of a point Q in FIG1 in another example;

[0024] FIG13 is a partial cross-sectional view of a display panel in another example;

[0025] FIG14 is a cross-sectional view of a point AA in FIG2 in another example;

[0026] FIG15 is a cross-sectional view of a point AA in FIG2 in another example;

[0027] FIG. 16 is a cross-sectional view taken at AA in FIG. 2 in yet another example. DETAILED DESCRIPTION

[0028] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are set forth in order to provide a comprehensive understanding of the present application. However, it will be apparent to those skilled in the art that the present application can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the well-known structures and technologies are not shown in order to avoid unnecessary ambiguity in the present application; and, for clarity, the sizes of some structures may be exaggerated. In addition, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0029] In order to better understand the present application, the display panel and the display device according to the embodiment of the present application are described in detail below with reference to FIG. 1 to FIG. 10 .

[0030] Please refer to Figures 1 to 4. Figure 1 is a top view of a display panel provided in accordance with the first embodiment of the present application. Figure 2 is a partially enlarged structural diagram of point Q in Figure 1. Figure 3 is a cross-sectional view of point AA in Figure 2. Figure 4 is an enlarged structural diagram of the isolation portion 310 in Figure 3.

[0031] As shown in Figures 1 to 4, a first embodiment of the present application provides a display panel 10, which includes a substrate 100, a pixel definition layer 200, and an isolation component 300. The pixel definition layer 200 is disposed on the substrate 100, and includes a pixel defining portion 210 and a pixel opening 220 enclosed by the pixel defining portion 210. The isolation component 300 is disposed on the substrate 100, and includes a plurality of isolation portions 310. The plurality of isolation portions 310 are symmetrically distributed around at least one pixel opening 220, wherein the isolation portion 310 includes a first surface 310a facing the substrate 100 and a second surface 310b facing away from the substrate 100, wherein the orthographic projection of the first surface 310a on the substrate 100 is located within the orthographic projection of the second surface 310b on the substrate 100.

[0032] In the display panel 10 of the embodiment of the present application, the display panel 10 includes a substrate 100, a pixel definition layer 200, and an isolation component 300. The pixel definition layer 200 includes a pixel defining portion 210 and a pixel opening 220. The pixel opening 220 is used to set a light-emitting unit 230 to achieve a light-emitting display of the display panel 10. The isolation portion 310 of the isolation component 300 is arranged around the pixel opening 220, and the size of the first surface 310a of the isolation portion 310 is less than or equal to the size of the second surface 310b, so that the edge of the isolation portion 310 can form a step difference or concave, and the light-emitting material layer is easily disconnected at the edge of the isolation portion 310, thereby improving the problem of easy crosstalk of carriers between adjacent pixel openings 220, and can improve the display effect of the display panel 10. In addition, multiple isolation portions 310 are symmetrically distributed around at least one pixel opening 220. On the one hand, this allows carriers to flow more evenly around the pixel opening 220. On the other hand, this allows the current in the electrode on the light-emitting unit 230 to be more uniform around the pixel opening 220, further improving the display effect of the display panel 10.

[0033] Optionally, the display panel 10 includes a display area AA and a non-display area NA, and the pixel opening 220 and the isolation portion 310 are both disposed in the display area AA. In other embodiments, the display panel 10 may not include the non-display area NA.

[0034] Optionally, the display panel 10 further includes a carrier layer 400, which includes a first subsection 410 and a second subsection 420 that are disconnected from each other. The first subsection 410 is located on a side of at least a portion of the pixel defining portion 210 that faces away from the substrate 100 and within the pixel opening 220, and the second subsection 420 is located on a side of the isolation portion 310 that faces away from the substrate 100. The carrier layer 400 includes at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer. For example, the carrier layer 400 includes an electron transport layer, which is used to transport electrons. When the electron transport layer is divided into the first subsection 410 and the second subsection 420 by the isolation portion 310, it can improve the flow of electrons between the pixel opening 220 surrounded by the isolation portion 310 opening and other pixel openings 220, thereby improving the display effect of the display panel 10 caused by electron crosstalk between different pixel openings 220. Carriers can include electrons or holes.

[0035] Optionally, during the preparation process of the display panel 10, the material for preparing the carrier layer 400 can be arranged in the display area AA of the display panel 10 using a preparation process such as evaporation. A portion of the material falls on the isolation portion 310 to form the second division 420, and another portion of the material falls at a position other than the isolation portion 310 in the display area to form the first division 410. Since the size of the first surface 310a of the isolation portion 310 is less than or equal to the size of the second surface 310b, the first division 410 and the second division 420 can be disconnected from each other at the edge of the isolation portion 310.

[0036] Optionally, a light-emitting unit 230 is disposed within the pixel opening 220. The light-emitting unit 230 includes a light-emitting material. The display panel 10 further includes a first electrode layer 600 and a second electrode layer 500. The first electrode layer 600 includes a plurality of first electrodes 610. Each first electrode 610 is located on the side of the light-emitting unit 230 facing the substrate 100. The second electrode layer 500 is located on the side of the light-emitting unit 230 facing away from the substrate 100. The first electrodes 610 and the second electrode layer 500 cooperate to drive the light-emitting unit 230 to emit light.

[0037] Optionally, the second electrode layer 500 includes a first sub-electrode 510 and a second sub-electrode 520. The first sub-electrode 510 is located on a side of at least a portion of the pixel defining portion 210 and the light-emitting unit 230 facing away from the substrate 100, and the second sub-electrode 520 is located on a side of the isolation portion 310 facing away from the substrate 100. The second electrode layer 500 is divided into the first sub-electrode 510 and the second sub-electrode 520 by the isolation portion 310. The multiple isolation portions 310 are symmetrically distributed around the pixel opening 220, thereby making the distribution of the first sub-electrodes 510 around the pixel opening 220 more uniform. Current can flow more evenly around the pixel opening 220, resulting in a more balanced current distribution within the second electrode layer 500, further improving the display quality of the display panel 10.

[0038] Optionally, during the preparation process of the display panel 10, the material for preparing the second electrode layer 500 can be arranged in the display area AA of the display panel 10 using a preparation process such as evaporation and vapor deposition. A portion of the material falls on the isolation portion 310 to form the second sub-electrode 520, and another portion of the material falls in the display area AA at a position other than the isolation portion 310 to form the first sub-electrode 510. Since the size of the first surface 310a of the isolation portion 310 is less than or equal to the size of the second surface 310b, the first sub-electrode 510 and the second sub-electrode 520 can be disconnected from each other at the edge of the isolation portion 310.

[0039] Optionally, the material of the isolation portion 310 includes an insulating material, so that when the first sub-portion 410 or the first sub-electrode 510 is in contact with the isolation portion 310 , current does not flow between the first sub-portion 410 or the first electrode 510 and the isolation portion 310 .

[0040] There are many ways to set up the substrate 100. The substrate 100 may include a substrate and an array substrate. The array substrate may include thin film transistors and signal lines. The signal lines may include data lines, scan lines, power lines and other signal lines.

[0041] The isolation portion 310 may be integrally formed, or may include a plurality of sub-layers stacked along the thickness direction Z, as long as the orthographic projection of the first surface 310 a on the substrate 100 is within the orthographic projection of the second surface 310 b on the substrate 100 .

[0042] In some optional embodiments, as shown in Figures 2 to 5, the multiple isolation portions 310 include a first isolation portion 311 and a second isolation portion 312, and the orthographic projection area of ​​the first isolation portion 311 on the substrate 100 is larger than the orthographic projection area of ​​the second isolation portion 312 on the substrate 100.

[0043] In these optional embodiments, the isolation portion 310 is configured as a first isolation portion 311 and a second isolation portion 312 of different sizes. The larger first isolation portion 311 can better block the flow of carriers in the carrier layer 400, thereby improving the crosstalk problem. The smaller second isolation portion 312 can better enable electrons to flow in the second electrode layer 500, thereby improving the display effect of the display panel 10.

[0044] The pixel opening 220 can be configured in various ways in its orthographic projection on the substrate 100. For example, the orthographic projection of the pixel opening 220 on the substrate 100 may include a plurality of side edges 223 and a vertex 224 connecting adjacent side edges 223. Optionally, the first isolation portion 311 is formed adjacent to the side edges 223 in its orthographic projection on the substrate 100 and extends along the direction in which the side edges 223 extend.

[0045] In these optional embodiments, the first isolation portion 311 is extended and formed along the extension direction of the side edge 223. On the one hand, this makes the shape of the first isolation portion 311 more compatible with the shape of the pixel opening 220. On the other hand, it enables the size of the first isolation portion 311 to be set larger, thereby enabling the first isolation portion 311 to better block the carriers between adjacent pixel openings 220 and better improve the display effect of the display panel 10.

[0046] The first isolation portion 311 is extended along the extension direction of the side 223 , which means that the extension dimension of the first isolation portion 311 in the extension direction of the side 223 is greater than the extension dimension of the first isolation portion 311 in other directions.

[0047] The orthographic projection of the first isolating portion 311 on the substrate 100 can be configured in a variety of shapes. For example, the orthographic projection of the first isolating portion 311 on the substrate 100 is rectangular, which simplifies the shape of the first isolating portion 311 and facilitates its fabrication. In other embodiments, the shape of the first isolating portion 311 on the substrate 100 can also be a triangle, a pentagon, an ellipse, or other shapes, as long as the first isolating portion 311 extends along the direction of the side edge 223.

[0048] When the orthographic projection of the first isolation portion 311 on the substrate 100 is rectangular, the width D of the orthographic projection of the first isolation portion 311 on the substrate 100 is 0.5 μm to 10 μm. Optionally, the width direction of the first isolation portion 311 is perpendicular to the length direction, and the length direction of the first isolation portion 311 is the extension direction of the adjacent side 223. When the orthographic projection width D of the first isolation portion 311 on the substrate 100 is within the above range, it can not only improve the problem that the first isolation portion 311 is difficult to prepare and form due to its too small width, but also improve the problem that the first isolation portion 311 is too wide, resulting in its occupying too large an area and affecting the aperture ratio.

[0049] Optionally, the orthographic projection of the second isolation portion 312 on the substrate 100 is circular, so that the shape of the second isolation portion 312 is more regular and easier to prepare and shape.

[0050] Optionally, the orthographic projection diameter d of the second isolation portion 312 on the substrate 100 is 0.5 μm to 10 μm. This can address the problem of the second isolation portion 312 being difficult to form due to a too small diameter d, and can also address the problem of the second isolation portion 312 being too large in diameter d, resulting in a large occupied area and affecting the aperture ratio.

[0051] Optionally, the orthographic projection width D of the first isolation portion 311 on the substrate 100 is equal to the orthographic projection diameter d of the second isolation portion 312 on the substrate 100. This allows the shapes of the first isolation portion 311 and the second isolation portion 312 to be more compatible, and the distribution areas of the first isolation portion 311 and the second isolation portion 312 around the pixel opening 220 to be more evenly distributed.

[0052] In other embodiments, the positive projection shape of the pixel opening 220 on the substrate 100 may also be elliptical, circular and include an arc-shaped edge, and the first isolation portion 311 may be extended and formed along the extension direction of the arc-shaped edge, so that the shape of the first isolation portion 311 is more compatible with the shape of the pixel opening 220.

[0053] In some optional embodiments, as shown in FIG. 2 to FIG. 4 , the isolation portion 310 further includes a side surface 310 c connecting the first surface 310 a and the second surface 310 b , and an angle β between the side surface 310 c and the first surface 310 a is 95° to 135°.

[0054] In these optional embodiments, when the angle β between the side surface 310c and the first surface 310a is between 95° and 135°, on the one hand, the outer side surface 310c can be concave, making it easier for the carrier layer 400 and the second electrode layer 500 to be disconnected at the edge of the isolation portion 310. On the other hand, the problem of the isolation portion 310 being difficult to form due to the excessively large angle between the side surface 310c and the first surface 310a can be alleviated.

[0055] In some optional embodiments, the extended dimension of the edge of the pixel opening 220 as projected onto the substrate 100 is L1, and the extended length of the multiple isolation portions 310 disposed around the pixel opening 220 as projected onto the substrate 100 is L2, where L1 and L2 satisfy the following relationship: 0.5L2≤L1≤1.2L2. For example, the total length of the multiple side edges 223 of the pixel's orthographic projection onto the substrate 100 is L1, the orthographic projection of the first isolation portion 311 onto the substrate 100 is rectangular, and the orthographic projection of the second isolation portion 312 onto the substrate 100 is circular. The sum of the lengths of the multiple first isolation portions 311 and the diameters of the multiple second isolation portions 312 is L2, where L1 and L2 satisfy the following relationship: 0.5L2≤L1≤1.2L2.

[0056] In these optional embodiments, when L1 and L2 satisfy the above relationship, it can not only improve the problem of better improving crosstalk due to the small size of the isolation part 310, but also improve the problem of the isolation part 310 being too large to affect the flow of current in the second electrode layer 500.

[0057] In some optional embodiments, as shown in FIG5 , the pixel opening 220 has multiple side edges 223 when projected onto the substrate 100, at least one of which has a length L3. The isolating portion 310 disposed on one side of the side edge 223 has an orthographic projection extending onto the substrate 100 of a length L4, where L3 and L4 satisfy the following relationship: 0.5L4≤L3≤1.2L4. For example, if a first isolating portion 311 is disposed on one side of the same side edge 223, the orthographic projection of the first isolating portion 311 onto the substrate 100 extends along the direction in which the side edge 223 extends, and the dimension of the first isolating portion 311 in the direction in which the side edge 223 extends is L4. Alternatively, a first isolation portion 311 and a second isolation portion 312 are provided on one side of the same side edge 223, and as described above, the orthographic projection of the first isolation portion 311 on the substrate 100 is rectangular, and the orthographic projection of the second isolation portion 312 on the substrate 100 is circular, then the sum of the length of the first isolation portion 311 and the diameter of the second isolation portion 312 is L4.

[0058] In these optional embodiments, when L3 and L4 satisfy the above relationship, it can not only improve the problem of not being able to better improve crosstalk due to the small size of the isolation part 310, but also improve the problem of the isolation part 310 being too large and affecting the flow of current in the second electrode layer 500.

[0059] There are many ways to arrange the isolation portion 310 around the pixel opening 220. As shown in Figure 5, in some optional embodiments, multiple isolation portions 310 are arranged along the same annular path around at least one pixel opening 220, and at least one second isolation portion 312 is arranged between at least two adjacent first isolation portions 311.

[0060] In these optional embodiments, the first isolation portion 311 and the second isolation portion 312 are arranged along the same annular path around the pixel opening 220, which can improve the crosstalk problem in different directions of the pixel opening 220; a smaller second isolation portion 312 is arranged between at least two adjacent first isolation portions 311, which can improve the flow of current in the second electrode layer 500 and ensure the display effect of the display panel 10.

[0061] Optionally, as shown in Figure 5, the second isolation portion 312 is adjacent to the orthographic projection and the vertex 224 of the substrate 100, so that the smaller isolation portion 310 is adjacent to the vertex 224 with a smaller distribution area of ​​the pixel opening 220. This can improve the impact of the setting of the isolation portion 310 on the flow of current in the second electrode layer 500, and can ensure the display effect of the display panel 10.

[0062] Optionally, as shown in FIG5 , one second isolating portion 312 is provided adjacent to the top corner 224, and the second isolating portion 312 is provided on the extension line of the diagonal line of the orthographic projection of the pixel opening 220 on the substrate 100. Alternatively, as shown in FIG6 , two second isolating portions 312 are provided adjacent to the top corner 224, and the two second isolating portions 312 are respectively provided adjacent to the two side edges 223 forming the top corner 224.

[0063] Optionally, as shown in Figure 6, the spacing H between the first isolation part 311 and the second isolation part 312 is 0.5μm to 10μm, which can not only improve the crosstalk problem that is difficult to improve due to the large spacing H between the first isolation part 311 and the second isolation part 312, but also improve the flow of current in the second electrode layer 500 due to the small spacing between the first isolation part 311 and the second isolation part 312.

[0064] Optionally, the dimension of at least a portion of the second isolation portion 312 along the thickness direction Z of the substrate 100 is 0.4 μm to 2.2 μm, or the dimension of at least a portion of the second isolation portion 312 along the thickness direction Z of the substrate 100 is greater than the dimension of the first isolation portion 311 along the thickness direction Z of the substrate 100. That is, the height of at least a portion of the second isolation portion 312 is relatively high, so that the second isolation portion 312 can be used to support the cover plate, thereby improving the light extraction effect caused by the cover plate sinking.

[0065] In some optional embodiments, as shown in FIG. 7 , a plurality of isolation portions 310 are disposed along at least two annular paths surrounding at least one pixel opening 220 , and the at least two annular paths surrounding the same pixel opening 220 are nested with each other.

[0066] In these optional embodiments, the plurality of isolation portions 310 are disposed along two or more annular paths around the same pixel opening 220 , which can better improve the problem of carrier crosstalk between two adjacent pixel openings 220 .

[0067] When the plurality of isolating portions 310 are arranged along at least two annular paths, the first isolating portion 311 may optionally be located on a side of the second isolating portion 312 facing away from the pixel opening 220. Alternatively, as shown in FIG7 , the first isolating portion 311 may be located on a side of the second isolating portion 312 facing the pixel opening 220. That is, the first isolating portion 311 and the second isolating portion 312 are arranged along different annular paths around at least one pixel opening 220, making the arrangement of the first isolating portion 311 and the second isolating portion 312 more regular and easier to manufacture and shape.

[0068] When the first isolation portion 311 is arranged on the side of the second isolation portion 312 facing toward or away from the pixel opening 220, optionally, more than two second isolation portions 312 are arranged on the side of the same first isolation portion 311 facing toward or away from the pixel opening 220, that is, the same first isolation portion 311 is provided with multiple smaller second isolation portions 312. When carriers flow between the first isolation portion 311 and the second isolation portion 312, the length of the carrier flow path can be increased, thereby better improving the crosstalk problem.

[0069] In other embodiments, as shown in FIG. 8 , the sizes of the plurality of isolation portions 310 may also be the same, so as to simplify the overall structure of the isolation assembly 300 and facilitate the preparation and molding of the isolation assembly 300 .

[0070] When the multiple isolation portions 310 have the same size, the multiple isolation portions 310 are arranged along at least two annular paths around at least one pixel opening 220. Among the multiple isolation portions 310 located on two adjacent annular paths, the isolation portion 310 located on one of the annular paths corresponds to between two adjacent isolation portions 310 located on the other annular path.

[0071] In these optional embodiments, multiple isolation portions 310 are arranged along multiple annular paths around the same pixel opening 220, and the isolation portions 310 on two adjacent annular paths are staggered in the direction from the center of the pixel opening 220 to the annular path, which can increase the flow distance of carriers between the isolation portions 310 on two adjacent annular paths, thereby improving the crosstalk problem.

[0072] Optionally, when the sizes of multiple isolation portions 310 are the same, as shown in Figure 4, the isolation portion 310 may also include the above-mentioned side surface 310c, and the angle between the side surface 310c and the first surface 310a is 95° to 135°, so that the outside of the side surface 310c can form an inward concave, and the carrier layer 400 and the second electrode layer 500 are more easily disconnected at the edge of the isolation portion 310; it can also improve the problem that the angle between the side surface 310c and the first surface 310a is too large, making it difficult to prepare and form the isolation portion 310.

[0073] When the multiple isolation portions 310 have the same size, optionally, the orthographic projections of the multiple isolation portions 310 on the substrate 100 are circular to simplify the structure of the isolation portions 310. Optionally, the orthographic projections of the multiple isolation portions 310 on the substrate 100 have a diameter of 0.5 μm to 10 μm, which can not only improve the problem of the isolation portion 310 being difficult to prepare and form due to its small diameter, but also improve the problem of the isolation portion 310 occupying too much area and affecting the aperture ratio due to its large diameter. Optionally, the spacing between two adjacent isolation portions 310 is 0.5 μm to 5 μm, which can not only improve the problem of crosstalk being difficult to improve due to the large spacing between the two adjacent isolation portions 310, but also improve the problem of the current flow in the second electrode layer 500 being affected by the small spacing between the two adjacent isolation portions 310. Optionally, the sum of the orthographic projection diameters of the plurality of isolation portions 310 on the substrate 100 may be the aforementioned L2, and / or the sum of the orthographic projection diameters of the plurality of isolation portions 310 adjacent to the same side edge 223 and located on the same annular path on the substrate 100 may be the aforementioned L4.

[0074] In other embodiments, as shown in FIG9 and FIG10 , the plurality of isolation portions 310 may further include two strip-shaped isolation portions 310 of different sizes. The orthographic projection of the strip-shaped isolation portion 310 on the substrate 100 is a regular rectangle, and at least two strip-shaped isolation portions 310 have different lengths.

[0075] In some optional embodiments, as shown in FIG11 , the plurality of pixel openings 220 include a first opening 221 and a second opening 222. The plurality of second openings 222 are disposed around the first opening 221. Isolation portions 310 are disposed between adjacent first openings 221 and second openings 222 to reduce crosstalk between the first openings 221 and the second openings 222. FIG11 illustrates only the isolation portion 310 surrounding one first opening 211. In other embodiments, isolation portions 310 may be disposed around each first opening 221.

[0076] Alternatively, the plurality of second openings 222 may be of the same type. For example, the plurality of second openings 222 may be used to accommodate light-emitting units 230 of the same color. Alternatively, the plurality of second openings 222 may include a first opening 222a and a second opening 222b, wherein the first opening 222a and the second opening 222b are used to accommodate light-emitting units 230 of different colors. Alternatively, the first opening 221 may be used to accommodate a blue light-emitting unit, with one of the first opening 222a and the second opening 222b being used to accommodate a green light-emitting unit, and the other being used to accommodate a red light-emitting unit.

[0077] Optionally, a line connecting the center of the first opening 221 and the center of the second opening 222 forms a first reference line (a dashed line in FIG11 ), and the first reference line passes through the isolation portion 310 between the first opening 221 and the second opening 222 , so that current can flow evenly between the first opening 221 and the second opening 222 .

[0078] Optionally, the isolation portion 310 between the first opening 221 and the second opening 222 is symmetrically arranged about the first reference line, so that the current flows between the first opening 221 and the second opening 222 more evenly.

[0079] Optionally, as shown in FIG11 , strip-shaped isolation portions 310 may be provided between adjacent pixel openings 220, with the strip-shaped isolation portions 310 being provided in a manner similar to the first isolation portions 311 described above. Alternatively, as shown in FIG12 , columnar isolation portions 310 may be provided between at least some of the adjacent pixel openings 220, with the columnar isolation portions 310 being provided in a manner similar to the second isolation portions 312 described above.

[0080] Optionally, the distances from the isolation portion 310 to the first opening 221 and the second opening 222 on both sides thereof are the same, so that the flow of current is more balanced.

[0081] Optionally, the first opening 221 may be used to accommodate the blue light emitting unit 230 , and the second opening 222 may be used to accommodate the red light emitting unit 230 and the green light emitting unit 230 , so as to improve the crosstalk problem between the blue light emitting unit 230 and other light emitting units 230 .

[0082] Optionally, one first isolation portion 311 may be provided between the first opening 221 and the second opening 222 , or a plurality of second isolation portions 312 arranged in a direction perpendicular to the first reference line may be provided between the first opening 221 and the second opening 222 .

[0083] Optionally, the isolation portion 310 is disposed along at least two annular paths around at least one pixel opening 220 , and the at least two annular paths around the same pixel opening 220 are nested with each other to increase the distribution area of ​​the isolation portion 310 and better improve the crosstalk problem.

[0084] In some optional embodiments, a light emitting unit 230 is disposed in the pixel opening 220, and an isolation portion 310 is disposed around each pixel opening 220 for accommodating light emitting units 230 of the same color. This can better improve the crosstalk problem between the light emitting unit 230 of the same color and other light emitting units 230.

[0085] Optionally, the isolation portion 310 is provided around the pixel opening 220 for accommodating the light-emitting unit 230 emitting blue light, so as to improve the crosstalk problem between the blue light-emitting unit 230 and other light-emitting units 230 .

[0086] Optionally, the isolation portion 310 is disposed around each pixel opening 220 to improve the crosstalk problem between any two adjacent light-emitting units 230 .

[0087] In some optional embodiments, as shown in Figure 13, the multiple isolation parts 310 include a supporting isolation part 320 and a partitioning isolation part 330, and the distance from the second surface 310b of the supporting isolation part 320 to the substrate 100 is greater than the distance from the second surface 310b of the partitioning isolation part 330 to the substrate 100.

[0088] In these optional embodiments, the height of the support isolation portion 320 is relatively high, and the support isolation portion 320 can be used to support the cover plate to improve the influence of the cover plate deformation on the display effect of the display panel 10.

[0089] Optionally, the size of the support isolation part 320 along the thickness direction Z of the substrate 100 is 0.4 μm to 2.2 μm, so as to improve the problem that the height of the support isolation part 320 is too small to support the cover plate, and also to improve the problem that the height of the support isolation part 320 is too large to affect its structural strength.

[0090] Optionally, the dimension of the partitioning portion 330 along the thickness direction Z of the substrate 100 is 0.2 μm to 2.0 μm. This can improve the difficulty of isolating the carrier layer 400 and the second electrode layer 500 when the partitioning portion 330 is too small, or improve the difficulty of manufacturing when the partitioning portion 330 is too large.

[0091] In the above embodiment, when the plurality of isolation portions 310 include a first isolation portion 311 and a second isolation portion 312 of different sizes, the second isolation portion 312 may be a supporting isolation portion 320. When the plurality of isolation portions 310 have the same size, the isolation portion 310 positioned near the vertex 224 of the orthographic projection of the pixel opening 220 on the substrate 100 may be a supporting isolation portion 320, and the other isolation portions 310 may be a blocking isolation portion 330.

[0092] There are various ways to symmetrically arrange the multiple isolation portions 310 around the pixel opening 220. For example, as shown in FIG5 , the orthographic projection of the pixel opening 220 on the substrate 100 includes a first side 223a extending along a first direction X and a second side 223b extending along a second direction Y. The first direction X and the second direction Y intersect, and the multiple isolation portions 310 are symmetrically arranged relative to the pixel opening 220 about an axis extending along the first direction X and / or the second direction Y. In other words, the multiple isolation portions 310 are axially symmetrically arranged about the pixel opening 220, and the axis can extend along the first direction X and / or the second direction Y to improve the uniformity of current flow in the first direction X and / or the second direction Y. When the axis extends along the first direction X, it can pass through the center of the pixel opening in the second direction Y. When the axis extends along the second direction Y, it can pass through the center of the pixel opening in the first direction X.

[0093] Alternatively, the plurality of isolation portions 310 are symmetrically arranged relative to the center of the pixel opening 220 to improve the balance of current flow in different directions around the pixel opening 220 .

[0094] Alternatively, the orthographic projection of the pixel opening 220 on the substrate 100 is a quadrilateral, and the plurality of isolation portions 310 are symmetrically arranged relative to the pixel opening 220 about the diagonal line of the orthographic projection of the pixel opening 220 on the substrate 100 to improve the balance of current flow on both sides of the diagonal line.

[0095] Optionally, the width of the orthographic projection of the isolation portion 310 on the substrate 100 is 0.5 μm to 5 μm. This can alleviate the problem of the isolation portion 310 being difficult to form due to its too small width, and can also alleviate the problem of the isolation portion 310 being too wide, resulting in its occupying too large an area and affecting the aperture ratio. Optionally, the spacing between two adjacent isolation portions 310 is 0.5 μm to 5 μm. This can alleviate the problem of crosstalk due to the large spacing between two adjacent isolation portions 310, and can also alleviate the problem of the current flow in the second electrode layer 500 due to the small spacing between two adjacent isolation portions 310.

[0096] The isolation portion 310 can be disposed in various locations. As shown in FIG3 and FIG13 , the isolation portion 310 can be disposed on a side of the pixel defining portion 210 facing away from the substrate 100. Alternatively, as shown in FIG14 , the pixel defining portion 210 further encloses an isolation opening 240, exposing at least a portion of the substrate 100 through the isolation opening 240, and the isolation portion 310 is disposed directly on the substrate 100 within the isolation opening 240.

[0097] Optionally, in any of the above embodiments, as shown in FIG15 and FIG16 , the display panel 10 may further include a connecting portion 700, which is used to electrically connect the first sub-electrode 510 and the second sub-electrode 520 to improve the flow of current in the second electrode layer 500. The connecting portion 700 may be made of a conductive material, so that the first sub-electrode 510 and the second sub-electrode 520 can be electrically connected to each other through the connecting portion 700.

[0098] Optionally, the connecting portion 700 is in direct contact with and at least partially overlaps the first sub-electrode 510 and the second sub-electrode 520. For example, the connecting portion 700 covers at least a portion of the first sub-electrode 510 and the second sub-electrode 520, so that current can flow between the second sub-electrode 520, the first sub-electrode 510 and the connecting portion 700.

[0099] Optionally, there are multiple ways to set the connecting portion 700. For example, as shown in Figure 15, the connecting portion 700 can be set around the isolation portion 310, so that the connecting portion 700 can be connected to different circumferential positions of the second sub-electrode 520, and the current can flow between the second sub-electrode 520 and the first sub-electrode 510 in different directions.

[0100] Alternatively, as shown in Figure 16, the orthographic projection of the second sub-electrode 520 on the substrate 100 is located within the orthographic projection of the connecting portion 700 on the substrate 100, that is, the connecting portion 700 completely covers the second sub-electrode 520 and extends from the second sub-electrode 520 to the first sub-electrode 510, which can increase the connection area between the connecting portion 700 and the second sub-electrode 520, so that the current can flow better between the connecting portion 700 and the second sub-electrode 520.

[0101] Optionally, the connecting portion 700 is located on a side of the second electrode layer 500 facing away from the substrate, so as to prevent the connecting portion 700 from affecting the contact between the second electrode layer 500 and the light-emitting unit 230 .

[0102] The second aspect of the present application also provides a display device, including the display panel 10 of any of the first aspect embodiments. Since the display device of the present embodiment includes the display panel 10, the display device of the present embodiment has the beneficial effects of the display panel 10, which will not be described in detail here.

[0103] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0104] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A display panel, comprising: substrate; A pixel definition layer is disposed on the substrate, and the pixel definition layer includes a pixel definition portion and a pixel opening formed by the pixel definition portion; An isolation component is disposed on the substrate, the isolation component includes a plurality of isolation parts, and the plurality of isolation parts are symmetrically distributed around at least one pixel opening. The isolation portion includes a first surface facing the substrate and a second surface facing away from the substrate, and an orthographic projection of the first surface on the substrate is located within an orthographic projection of the second surface on the substrate.

2. The display panel according to claim 1, wherein: The plurality of isolation parts include a first isolation part and a second isolation part, wherein an orthographic projection area of ​​the first isolation part on the substrate is larger than an orthographic projection area of ​​the second isolation part on the substrate.

3. The display panel according to claim 2, wherein: The pixel opening has a plurality of side edges and vertex angles connecting adjacent side edges in the orthographic projection of the substrate, and the first isolation portion is adjacent to the orthographic projection of the substrate and the side edges and is extended along the extension direction of the side edges.

4. The display panel according to claim 2, wherein: The orthographic projection of the first isolation portion on the substrate is rectangular; Or, the width of the orthographic projection of the first isolation portion on the substrate is 0.5 μm to 10 μm; Or, the orthographic projection of the second isolation portion on the substrate is circular; Alternatively, a width of an orthographic projection of the first isolation portion on the substrate is equal to a diameter of an orthographic projection of the second isolation portion on the substrate.

5. The display panel according to claim 2, wherein: The isolation portion further includes a side surface connecting the first surface and the second surface, and an angle between the side surface and the first surface is 95° to 135°.

6. The display panel according to claim 2, wherein: The extension dimension of the pixel opening at the orthographic projection edge of the substrate is L1, and the extension length of the orthographic projection of the plurality of isolation portions arranged around the pixel opening on the substrate is L2, and L1 and L2 satisfy: 0.5L2≤L1≤1.2L2; Alternatively, the pixel opening has a plurality of side edges in the orthographic projection of the substrate, at least one of the side edges has a length of L3, the isolation portion disposed on one side of the side edge has an extension length of L4 in the orthographic projection of the substrate, and L3 and L4 satisfy: 0.5L4≤L3≤1.2L4.

7. The display panel according to claim 3, wherein: A plurality of the isolation portions are arranged along the same annular path and surround at least one pixel opening, and at least one second isolation portion is arranged between at least two adjacent first isolation portions.

8. The display panel according to claim 7, wherein: The second isolation portion is adjacent to the vertical angle and the orthographic projection of the substrate. Or, the distance between the first isolation part and the second isolation part is 0.5 μm to 10 μm; Or, at least part of the second isolation portion has a size of 0.4 μm to 2.2 μm along the thickness direction of the substrate, or A small portion of the second isolation portions has a size along the thickness direction of the substrate that is larger than a size of the first isolation portion along the thickness direction of the substrate.

9. The display panel according to claim 2, wherein: The plurality of isolation portions are arranged along at least two annular paths surrounding at least one pixel opening, and the at least two annular paths surrounding the same pixel opening are mutually nested.

10. The display panel according to claim 1, wherein: The multiple isolation parts have the same size, and the multiple isolation parts are arranged along at least two annular paths around at least one pixel opening. Among the multiple isolation parts located on two adjacent annular paths, the isolation part located on one of the annular paths corresponds to the isolation part between two adjacent isolation parts located on the other annular path, or the isolation part also includes a side surface connecting the first surface and the second surface, and the angle between the side surface and the first surface is 95° to 135°.

11. The display panel according to claim 1, wherein: The plurality of pixel openings include a first opening and a second opening, the plurality of second openings are arranged around the first opening, and the isolation portion is arranged between adjacent first openings and second openings.

12. The display panel according to claim 11, wherein: A line connecting the center of the first opening and the center of the second opening forms a first reference line, and the first reference line passes through the isolation portion between the first opening and the second opening.

13. The display panel according to claim 11, wherein: The isolation portion between the first opening and the second opening is symmetrically arranged about the first reference line thereof; Or, the distances from the isolation portion to the first opening and the second opening located on both sides thereof are the same; Alternatively, the isolation portion is disposed along at least two of the annular paths surrounding at least one of the pixel openings, and the at least two annular paths surrounding the same pixel opening are nested with each other.

14. The display panel according to claim 1, wherein: A light-emitting unit is arranged in the pixel opening, and the isolation part is arranged on the periphery of the pixel opening for accommodating the light-emitting units of the same color.

15. The display panel according to claim 14, wherein: The isolation part is provided on the periphery of the pixel opening for accommodating the light-emitting unit emitting blue light; Alternatively, the isolation portion is disposed on the periphery of each pixel opening.

16. The display panel according to claim 14, wherein: The display panel also includes a second electrode layer, which includes a first sub-electrode located on the side of the light-emitting unit away from the substrate and a second sub-electrode located on the side of the isolation portion away from the substrate. The display panel also includes a connecting portion, which electrically connects the first sub-electrode and the second sub-electrode.

17. The display panel according to claim 16, wherein: The connecting portion is arranged around the isolating portion; Alternatively, the orthographic projection of the second sub-electrode on the substrate is located within the orthographic projection of the connecting portion on the substrate; and the connecting portion is located on a side of the second electrode layer facing away from the substrate.

18. The display panel according to claim 1, wherein: The plurality of isolation parts include a supporting isolation part and a partitioning isolation part, and the distance between the second surface of the supporting isolation part and the substrate is greater than the distance between the second surface of the partitioning isolation part and the substrate; Alternatively, an orthographic projection area of ​​the supporting isolation portion on the substrate is smaller than an orthographic projection area of ​​the partition isolation portion on the substrate.

19. The display panel according to claim 1, wherein: The orthographic projection of the pixel opening on the substrate includes a first side extending along the first direction and a second side extending along the second direction, the first direction and the second direction intersect, and the plurality of isolation portions are symmetrically arranged relative to the pixel opening about an axis extending along the first direction and / or the second direction; Alternatively, a plurality of the isolation portions are symmetrically arranged relative to the center of the pixel opening; Alternatively, the orthographic projection of the pixel opening on the substrate is a quadrilateral, and the plurality of isolation portions are symmetrically arranged relative to the pixel opening and about a diagonal line of the orthographic projection of the pixel opening on the substrate.

20. A display device comprising the display panel according to any one of claims 1 to 19.

Images