Display panel, preparation method and display device

Abstract

The invention relates to a display panel, a preparation method and a display device. The display panel comprises a plurality of first-type light-emitting units and a plurality of second-type light-emitting units, the supporting columns are located between every two adjacent first-type light-emitting units. In a planar graph, the first partition part at least partially surrounds the first type of light-emitting units, and the second partition part at least partially surrounds the second type of light-emitting units; the first partition part comprises a first fracture, and the second partition part comprises a second fracture; the first fracture is adjacent to the supporting column; wherein in the first type of light-emitting units and the second type of light-emitting units with the same light-emitting color, the width of the first fracture is larger than that of the second fracture. According to the display panel, the fracture is additionally formed in the second partition part which is not adjacent to the supporting column, so that leakage flow between the second type of light-emitting units is relatively increased, the leakage flow uniformity of the display panel is improved, and the display effect is improved.

Description

Technical Field

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

[0002] In panel display technology, Organic Light-Emitting Diode (OLED) display technology is different from traditional liquid crystal display (LCD) technology. It has the characteristics of self-luminescence. OLED uses a very thin organic material coating and a glass substrate. It has many advantages such as fast response speed, wide viewing angle, rich colors, low power consumption and high and low temperature resistance, making it a key development technology in the current industry.

[0003] In OLED display panels, controlling the illumination of a sub-pixel generates lateral leakage current. Grooves are typically created around the sub-pixel to extend the leakage current path and mitigate this problem. However, these grooves require a gap to ensure proper cathode connection. The gap's position, width, and relative position can affect leakage current, leading to uneven leakage across different areas of the display panel and potentially poor display quality. Summary of the Invention

[0004] In order to solve the above technical problems, the present disclosure provides a display panel, a manufacturing method thereof, and a display device, which are used to improve the leakage uniformity of the display panel and enhance the display uniformity.

[0005] In a first aspect, the present disclosure provides a display panel, comprising:

[0006] a plurality of first-type light-emitting units and a plurality of second-type light-emitting units;

[0007] A plurality of support columns, each support column being located between two adjacent first-type light-emitting units;

[0008] A plurality of partitions, including a plurality of first partitions and a plurality of second partitions; in a plan view, the first partitions at least partially surround the first type of light-emitting units, and the second partitions at least partially surround the second type of light-emitting units; the first partitions include a first break, and the second partitions include a second break; the first break is disposed adjacent to the support column;

[0009] Among them, in the first type of light-emitting units and the second type of light-emitting units with the same light-emitting color, the width of the first break is greater than the width of the second break.

[0010] In a second aspect, based on the same inventive concept, the present disclosure provides a method for manufacturing a display panel, the method comprising:

[0011] Providing a semi-finished panel, wherein the semi-finished panel includes a plurality of first-type light-emitting units and anodes of a plurality of second-type light-emitting units;

[0012] Making a plurality of support columns on the semi-finished panel, wherein the support columns are located between two adjacent first-type light-emitting units;

[0013] A plurality of partitions are formed on the semi-finished panel, the partitions including a plurality of first partitions and a plurality of second partitions; the first partitions are formed to at least partially surround the first type of light-emitting units, and the second partitions are formed to at least partially surround the second type of light-emitting units; the first partitions include a first break, and the second partitions include a second break; the first break is disposed adjacent to the support column;

[0014] In the first type of light-emitting unit and the second type of light-emitting unit having the same light-emitting color, the width of the first fracture is made larger than the width of the second fracture;

[0015] The other film layers of the first type of light emitting unit and the second type of light emitting unit are continuously manufactured on the semi-finished panel, and then packaged to complete the manufacture of the display panel.

[0016] In a third aspect, based on the same inventive concept, the present disclosure provides a display device comprising the display panel of the first aspect.

[0017] The technical solution provided by the present disclosure has the following advantages over the prior art: The present disclosure provides a display panel, comprising: a plurality of first-type light-emitting units and a plurality of second-type light-emitting units; a plurality of support columns, the support columns being located between two adjacent first-type light-emitting units; a plurality of partitions, including a plurality of first partitions and a plurality of second partitions; in a plan view, the first partitions at least partially surround the first-type light-emitting units, and the second partitions at least partially surround the second-type light-emitting units; the first partitions include a first break, and the second partitions include a second break; the first break is disposed adjacent to the support columns; wherein, in the first-type light-emitting units and the second-type light-emitting units having the same luminous color, the width of the first break is greater than the width of the second break. The display panel provided by the present disclosure reduces leakage current between the first-type light-emitting units by setting the first break width corresponding to the first-type light-emitting units larger and utilizing the effect of the support columns on extending the leakage current path; and increases the leakage current between the second-type light-emitting units by adding a break to the second partitions corresponding to the second-type light-emitting units not adjacent to the support columns, thereby improving the leakage current uniformity of the display panel and the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0019] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 A top view of a display panel provided in an embodiment of the present disclosure;

[0021] Figure 2 for Figure 1 A cross-sectional view along A-A';

[0022] Figure 3 for Figure 1 Another cross-sectional view along A-A';

[0023] Figure 4 for Figure 1 A cross-sectional view along B-B';

[0024] Figure 5 for Figure 1 Another cross-sectional view along B-B';

[0025] Figure 6 A schematic diagram of the extension lengths of different partition parts provided in an embodiment of the present disclosure;

[0026] Figure 7 A schematic diagram of the distance relationship between different partition parts and light-emitting units provided in an embodiment of the present disclosure;

[0027] Figure 8 A schematic diagram of the widths of different fractures in a first partition portion provided in an embodiment of the present disclosure;

[0028] Figure 9 A schematic diagram of the fracture width corresponding to a first type of light-emitting unit of different colors provided in an embodiment of the present disclosure;

[0029] Figure 10 A schematic diagram of a film structure of a light-emitting unit provided in an embodiment of the present disclosure;

[0030] Figure 11 A diagram showing the steps of a method for manufacturing a display panel according to an embodiment of the present disclosure;

[0031] Figure 12 A schematic diagram of a display device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present disclosure, the scheme of the embodiments of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the embodiments of the present disclosure, but the embodiments of the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, not all of the embodiments.

[0034] Figure 1 A top view of a display panel provided in an embodiment of the present disclosure is shown. Figure 2 for Figure 1 A cross-sectional view along A-A', Figure 3 for Figure 1 Another cross-sectional view along A-A', Figure 4 for Figure 1 A cross-sectional view along BB', Figure 5 for Figure 1 For another cross-sectional view along B-B', please refer to Figures 1 to 5 The present disclosure provides a display panel 100, which includes: a plurality of first-type light-emitting units 61 and a plurality of second-type light-emitting units 62; a plurality of support columns 00, wherein the support columns 00 are located between two adjacent first-type light-emitting units 61; a plurality of partition portions 70, including a plurality of first partition portions 71 and a plurality of second partition portions 72; in a plan view, the first partition portion 71 at least partially surrounds the first-type light-emitting unit 61, and the second partition portion 72 at least partially surrounds the second-type light-emitting unit 62; the first partition portion 71 includes a first break 81, and the second partition portion 72 includes a second break 82; the first break 81 is arranged adjacent to the support columns 00; wherein, in the first-type light-emitting unit 61 and the second-type light-emitting unit 62 having the same light-emitting color, the width L1 of the first break 81 is greater than the width L2 of the second break 82.

[0035] For details, please refer to Figure 2 and Figure 4 Optionally, the display panel 100 includes a substrate 10, a driving layer 20, and a pixel definition layer 40. The pixel definition layer 40 is located on the side of the driving layer 20 away from the substrate 10. The pixel definition layer 40 includes multiple openings, which accommodate light-emitting units 60. The driving layer 20 is used to drive the light-emitting units 60 to emit light. The light-emitting units 60 include an anode 31, a light-emitting layer 32, and a cathode 33. Voltage is applied to the anode 31 and the cathode 33. Under the action of the electric field formed by the anode 31 and the cathode 33, holes and electrons recombine in the light-emitting layer 32 to emit light. Figure 2 and Figure 4The example in which the display panel 100 includes two light-emitting units 60 is used for illustration only, and does not represent the actual number of the light-emitting units 60 in the display panel 100 .

[0036] Please refer to Figures 1 to 5 The light-emitting unit 60 includes a first type of light-emitting unit 61 and a second type of light-emitting unit 62. The first type of light-emitting unit 61 and the second type of light-emitting unit 62 each include light-emitting elements of multiple different colors, such as red, green, and blue. The present disclosure does not specifically limit the light-emitting colors of the first type of light-emitting unit 61 and the second type of light-emitting unit 62. During the manufacturing process of an OLED panel, the organic functional layers such as the light-emitting layer, electron transport layer, electron injection layer, and cathode in the light-emitting unit 60 are typically deposited on the pixel definition layer 40 by evaporation. In particular, for large-sized panels, to ensure the accuracy of evaporation, the mask plate needs to maintain a very precise distance and alignment with the pixel definition layer 40. By providing a physical support point, the support column 00 ensures a stable gap between the mask plate and the pixel definition layer 40, avoiding contact and scratching of the underlying film layer. It also provides a more stable fixation for the mask plate, reducing deformation or jitter of the mask plate caused by gravity, vibration, or other external factors, thereby improving the accuracy and uniformity of the evaporation pattern.

[0037] Please refer to Figure 1 The first type of light emitting unit 61 can be regarded as a light emitting unit adjacent to the support column 00. Adjacent here means that no other light emitting unit is arranged between the support column 00 and the first type of light emitting unit 61; the second type of light emitting unit 62 can be regarded as a light emitting unit not adjacent to the support column 00. The first partition portion 71 at least partially surrounds the first type of light emitting unit 61, and the second partition portion 72 at least partially surrounds the second type of light emitting unit 62. Figure 1 The example of the first partition portion 71 and the second partition portion 72 including two fractures 80 is used for illustration only. The present disclosure does not limit the shape of the partition portion 70 and the number of fractures 80 , which can be specifically set according to actual process requirements.

[0038] In an optional embodiment provided by the present disclosure, in the first type of light-emitting unit 61 and the second type of light-emitting unit 62 having the same luminous color, optionally, the first type of light-emitting unit 61 and the second type of light-emitting unit 62 are both red light-emitting elements, or the first type of light-emitting unit 61 and the second type of light-emitting unit 62 are both blue light-emitting elements, or the first type of light-emitting unit 61 and the second type of light-emitting unit 62 are both green light-emitting elements. The first partition portion 71 at least partially surrounds the first type of light-emitting unit 61, and the first partition portion 71 includes a first break 81. The second partition portion 72 at least partially surrounds the second type of light-emitting unit 62 having the same color as the first type of light-emitting unit 61, and the second partition portion 72 includes a second break 82. The width L1 of the first break 81 is greater than the width L2 of the second break 82. It can be understood that the width of the break 80 refers to the distance between the two ends of the break 80. Because the first-type light-emitting unit 61 is adjacent to the support column 00, the support column 00 is located precisely along the primary leakage path of the first-type light-emitting unit 61. The surface of the support column 00 facing away from the substrate 10 is higher than the surface of the cathode 33 in the light-emitting unit 60 facing away from the substrate 10. This lengthens the leakage path. As the path becomes longer, the leakage resistance increases, effectively reducing leakage. Therefore, even though the width L1 of the first break 81 corresponding to the first-type light-emitting unit 61 is larger, the provision of the support column 00 increases the leakage path of the first-type light-emitting unit 61, thereby reducing leakage. Ultimately, the actual effective leakage current may be reduced to a level similar to that of the second-type light-emitting unit 62. In this way, the width L1 of the first break 81 is set to be larger than the width L2 of the second break 82. At the same time, the surface of the support column 00 facing away from the substrate 10 is higher than the surface of the cathode 33 in the light-emitting unit 60 facing away from the substrate, which reduces the leakage of the first type of light-emitting unit 61 adjacent to the support column 00 to a certain extent. By setting the second break 82 in the second partition portion 72 corresponding to the second type of light-emitting unit 62 not adjacent to the support column 00, the leakage of this area can be relatively increased, so that the leakage levels of the first type of light-emitting unit 61 and the second type of light-emitting unit 62 are approximately equal, so as to improve the leakage uniformity of the display panel 100 and thus improve the display uniformity.

[0039] Please refer to Figures 2 to 5 , Figure 2 and Figure 4 Take the light emitting unit 60 including only one light emitting layer 32 as an example for illustration. Figure 3 and Figure 5 Taking the light-emitting unit 60 including two light-emitting layers 32 as an example, it can be understood that when the light-emitting unit 60 in the display panel 100 is manufactured using the stacked evaporation display technology, the number of light-emitting layers 32 can also be greater than 2 layers, and this disclosure does not limit this.

[0040] Please refer to Figure 3 , Figure 3The first type of light-emitting unit 61 includes a first light-emitting layer 321 and a second light-emitting layer 322. Specifically, the first type of light-emitting unit 61 further includes a hole transport layer (not shown in the figure) and an anode 31 on the side of the light-emitting layer 32 facing the driving layer 20, and further includes an electron transport layer (not shown in the figure) and a cathode 33 on the side away from the driving layer 20. A connecting layer (not shown in the figure) is provided between adjacent light-emitting layers 32, and the connecting layer serves to connect adjacent light-emitting layers 32 in series. Under the joint drive of the cathode 31 and the anode 33, electrons and holes are respectively transported to the nearest light-emitting layer 32 through the electron transport layer and the hole transport layer, and then are transported to the adjacent light-emitting layer 32 through the connecting layer. Multiple light-emitting layers 32 emit light together, thereby emitting stronger light than a single light-emitting layer 32.

[0041] It should be noted that the luminous colors of the first luminous layer 321 and the second luminous layer 322 may be the same or different, and the embodiment of the present disclosure does not limit this. Figure 4 and Figure 5 The example in which the first light-emitting layer 321 and the second light-emitting layer 322 emit the same light color is used for illustration.

[0042] Figure 6 For a schematic diagram of the extension length of different partition parts provided in the embodiment of the present disclosure, please refer to Figure 1 and Figure 6 The present disclosure provides a display panel 100, in which, in a first-type light-emitting unit 61 and a second-type light-emitting unit 62 having the same light-emitting color, a distance S1 between a first partition portion 71 and the first-type light-emitting unit 61 is equal to a distance S2 between a second partition portion 72 and the second-type light-emitting unit 62, and an extension length Y1 of the first partition portion 71 is less than an extension length Y2 of the second partition portion 72.

[0043] Specifically, in an optional embodiment provided by the present disclosure, when both the first-type light-emitting unit 61 and the second-type light-emitting unit 62 are red, green, or blue light-emitting elements, the distance S1 between the first partition 71 and the first-type light-emitting unit 61 is equal to the distance S2 between the second partition 72 and the second-type light-emitting unit 62. The distance here refers to the shortest distance between the partition 70 and the light-emitting unit 60 therein. When the distances between the first-type light-emitting unit 61 and the second-type light-emitting unit 62 of the same color and their corresponding partition 70 are equal, since the extension length Y2 of the second partition 72 is greater than the extension length Y1 of the first partition 71, the extension length Y1 of the first partition 71 is smaller, that is, the width L1 of the first break 81 of the first partition 71 is larger, and the extension length Y2 of the second partition 72 is greater, that is, the width L2 of the second break 82 is smaller than the width L1 of the first break 81. Because the first-type light-emitting units 61 are adjacent to the support columns 00, the support columns 00 extend the leakage path between adjacent first-type light-emitting units 61, reducing leakage between adjacent first-type light-emitting units 61 and ensuring that the actual leakage between the first-type light-emitting units 61 and the second-type light-emitting units 62 is approximately equal, thereby improving display uniformity. Furthermore, the longer extension length Y2 of the second partition 72 helps to focus the light from the second-type light-emitting units 62, effectively blocking the light from the second-type light-emitting units 62 and reducing interference with adjacent areas.

[0044] Figure 7 For a schematic diagram of the distance relationship between different partition parts and light-emitting units provided in the embodiment of the present disclosure, please refer to Figure 1 and Figure 7 The present disclosure provides a display panel 100, in which, in a first-type light-emitting unit 61 and a second-type light-emitting unit 62 having the same light-emitting color, an extension length Y1 of a first partition portion 71 is equal to an extension length Y2 of a second partition portion 72, and a distance S1 between the first partition portion 71 and the first-type light-emitting unit 61 is greater than a distance S2 between the second partition portion 72 and the second-type light-emitting unit 62.

[0045] Specifically, because the extension length Y1 of the first partition 71 and the extension length Y2 of the second partition 72 are equal, while the distance S1 between the first partition 71 and the first-type light-emitting unit 61 is greater, the width L1 of the first cutout 81 of the first partition 71 is greater. Accordingly, the wider first cutout 81 generates more leakage. The distance S2 between the second partition 72 and the second-type light-emitting unit 62 is smaller, resulting in a smaller width L2 of the second cutout 82 of the second partition 72. Accordingly, the smaller second cutout 82 generates less leakage. However, the first-type light-emitting unit 61 is adjacent to the support column 00. The extended leakage path provided by the support column 00 reduces the additional leakage generated by the excessive distance between the partition 70 and the light-emitting unit 60. Ultimately, the actual leakage level of the first-type light-emitting unit 61 approaches or even reaches the leakage level of the second-type light-emitting unit 62, thereby achieving leakage balance across the entire display panel 100 and avoiding significant light leakage or crosstalk near the support column 00. In this way, by setting the distance S1 between the first partition portion 71 and the first type of light-emitting unit 61 to be greater than the distance S2 between the second partition portion 72 and the second type of light-emitting unit 62, combined with the shielding effect of the support column 00, the leakage current of the first type of light-emitting unit 61 is reduced, and under the synergistic effect of mechanical support and electrical control, the leakage current uniformity of the display panel 100 is achieved.

[0046] Figure 8 This is a schematic diagram of the width of different fractures in the first partition portion provided in the embodiment of the present disclosure, please refer to Figure 8 The present disclosure provides a display panel 100, wherein the first partition portion 71 corresponding to the first break 81 includes a third break 83, and the third break 83 is not adjacent to the support column 00; in a first partition portion 71, the width L3 of the third break 83 is smaller than the width L1 of the first break 81.

[0047] Specifically, in an optional embodiment provided by the present disclosure, the first type of light-emitting unit 61 is adjacent to the support column 00, the first partition portion 71 at least partially surrounds the first type of light-emitting unit 61, and the first partition portion 71 includes a first break 81 and a third break 83, wherein the first break 81 is adjacent to the support column 00, and the third break 83 is not adjacent to the support column 00, that is, the third break 83 is located on the side of the first break 81 away from the support column 00; in the same first partition portion 71, the width L3 of the third break 83 is smaller than the width L1 of the first break 81. Although the width L1 of the first break 81 is wider than the width L3 of the third break 83, since the first break 81 is adjacent to the support column 00, the extended leakage path of the support column 00 reduces the leakage of the first break 81 to a certain extent. Because the third break 83 is not adjacent to the support column 00, the width L3 of the third break 83 is set to be smaller than the width L1 of the first break 81. In the absence of the support column 00 to provide an additional leakage path, the width L3 of the third break 83 is reduced to reduce the leakage of the third break 83, thereby making the leakage of the breaks 80 at different positions in the same first partition portion 71 as balanced as possible. In this way, by differentiating the width of the breaks 80 at different positions in the first partition portion 71, the leakage caused by the wider first break 81 is balanced by extending the leakage path of the support column 00. By setting the width L3 of the third break 83 not adjacent to the support column 00 to be narrower, the leakage balance of the breaks 80 at different positions in the same first partition portion 71 is optimized, thereby improving display uniformity.

[0048] Figure 9 For a schematic diagram of the fracture width corresponding to a first type of light emitting unit of different colors provided in the embodiment of the present disclosure, please refer to Figure 9 The present disclosure provides a display panel 100, wherein the first type of light emitting unit 61 includes a first sub-light emitting unit 611 and a second sub-light emitting unit 612, wherein the first sub-light emitting unit 611 is adjacent to the second sub-light emitting unit 612, and the first sub-light emitting unit 611 and the second sub-light emitting unit 612 emit different colors of light; the first partition portion 71 includes a first sub-partition portion 711 and a second sub-partition portion 712, wherein the first sub-partition portion 711 at least partially surrounds the first sub-light emitting unit 611, and the first sub-partition portion 711 includes a first sub-break 811; the second sub-partition portion 712 The break 712 at least partially surrounds the second sub-light-emitting unit 612, and the second sub-partition portion 712 includes a second sub-break 812; the support column 00 is located between the first sub-light-emitting unit 611 and the second sub-light-emitting unit 612; the first sub-break 811 and the second sub-break 812 face the support column 00, that is, the first sub-break 811 and the second sub-break 812 are adjacent to the support column 00, the width L11 of the first sub-break 811 is smaller than the width of the second sub-break 812, and the cross pressure of the first sub-light-emitting unit 611 is greater than the cross pressure of the second sub-light-emitting unit 612.

[0049] Specifically, the support column 00 is located between the first sub-light-emitting unit 611 and the second sub-light-emitting unit 612. The voltage across the first sub-light-emitting unit 611 is greater than that across the second sub-light-emitting unit 612. The voltage across the first sub-light-emitting unit 611 refers to the voltage difference required across the two ends of the light-emitting unit 60 for normal illumination. Generally speaking, the greater the voltage across the first sub-light-emitting unit 611, the greater the current density passing through the light-emitting unit 60. For a fracture 80 of the same width, the leakage current of the first sub-light-emitting unit 611 with a larger voltage across the first sub-light-emitting unit 611 is greater than that of the second sub-light-emitting unit 612 with a smaller voltage across the second sub-light-emitting unit 612.

[0050] The first sub-break 811 and the second sub-break 812 both face the support column 00, and the width L11 of the first sub-break 811 is smaller than the width L12 of the second sub-break 812. The width L11 of the first sub-break 811 of the first sub-light-emitting unit 611 facing the support column 00 is smaller, while the cross-pressure of the first sub-light-emitting unit 611 is larger. The first sub-break 811 with a smaller width can effectively reduce the leakage current of the first sub-light-emitting unit 611 with a larger cross-pressure. The cross pressure of the second sub-light-emitting unit 612 is smaller, and the width L12 of the second sub-fracture 812 of the second sub-light-emitting unit 612 facing the support column 00 is larger, which can relatively increase the leakage current of the second sub-light-emitting unit 612 with a smaller cross pressure, so that the leakage current conditions of the first-type light-emitting units 61 of different colors adjacent to the support column 00 are approximately the same. In this way, among the first-type light-emitting units 61 of different colors adjacent to the same support column 00, by differentiating the widths of the partition parts 70 fractures 80 corresponding to the first-type light-emitting units 61 of different colors, the leakage currents between the first-type light-emitting units 61 of different colors are made approximately equal, so as to improve the leakage current uniformity of the display panel 100 and improve the display uniformity.

[0051] Please refer to Figure 9 The present disclosure provides a display panel 100 , wherein the first sub-light emitting unit 611 is a blue light emitting element, and the second sub-light emitting unit 612 is a red light emitting element.

[0052] Specifically, the first sub-light-emitting unit 611 adjacent to the support column 00 is a blue light-emitting element, and the blue light-emitting element has a larger cross-voltage. The second sub-light-emitting unit 612 adjacent to the support column 00 is a red light-emitting element, and the red light-emitting element has a smaller cross-voltage. Blue light-emitting elements, such as blue LEDs or OLEDs, are usually made based on wider bandgap materials (such as GaN-based materials), which require higher energy to produce blue photons. According to the principle of semiconductor light emission, the wavelength of blue light is shorter, so the photon energy is higher, and a larger potential difference (cross-voltage) is required to drive electron-hole recombination to produce these high-energy photons. For example, the cross-voltage of common GaN-based blue LEDs is usually around 2.5V to 3.5V, while the cross-voltage of red LEDs may be around 1.8V to 2.4V. The above are only examples, and the specific values ​​will vary depending on the material system, structure and process.

[0053] Please continue to refer to Figure 9 The present disclosure provides a display panel 100. In a plan view, the first sub-break 811 and the second sub-break 812 have an overlapping area in a first direction D1. The first direction D1 is parallel to the plane where the display panel 100 is located and is parallel to the arrangement direction of the first sub-light-emitting unit 611, the second sub-light-emitting unit 612 and the support column 00. In the first direction D1, the support column 00 covers the overlapping area.

[0054] Specifically, in an optional embodiment provided by the present disclosure, the first type of light-emitting unit 61 includes a first sub-light-emitting unit 611 and a second sub-light-emitting unit 612, and the support column 00 is located between the first sub-light-emitting unit 611 and the second sub-light-emitting unit 612; the first sub-partition portion 711 at least partially surrounds the first sub-light-emitting unit 611, the first sub-partition portion 711 includes a first sub-break 811, and the first sub-break 811 faces the support column 00, the second sub-partition portion 712 at least partially surrounds the second sub-light-emitting unit 612, the second sub-partition portion 712 includes a second sub-break 812, and the second sub-break 812 faces the support column 00, the first sub-break 811 and the second sub-break 812 are respectively located on both sides of the support column 00, the first sub-break 811 and the second sub-break 812 overlap in the first direction D1, and the support column 00 covers the overlapping area. Without effective isolation, a strong electric field may exist between two adjacent first-type light-emitting units 61, especially at the first break 81 between them. This strong electric field can easily lead to dielectric breakdown or surface discharge, thereby causing leakage current. However, by arranging the support column 00 to overlap with the first partition portion 71 in the first direction D1, the electric field can be effectively dispersed and uniformed, reducing the leakage current between adjacent first-type light-emitting units 61. In addition, please combine Figure 2 When the first and second sub-breaks 811, 812 face the support column 00 and overlap in the first direction D1, the leakage path between two adjacent first-type light-emitting units 61 must bypass the support column 00, effectively extending the creepage distance and spatial distance of the leakage current, thereby reducing the magnitude of the leakage current. Thus, by arranging the first and second sub-breaks 811, 812 to overlap in the first direction D1, with the support column 00 covering the overlapping area, leakage between adjacent first-type light-emitting units 61 can be effectively reduced, improving display stability.

[0055] Please refer to Figure 9 The present disclosure provides a display panel 100, wherein the orthographic projection of the support column 00 on the plane where the display panel 100 is located is a polygon or a circle with more than 4 sides.

[0056] Specifically, in an optional embodiment provided by the present disclosure, the orthographic projection of the support column 00 on the plane where the display panel 100 is located can be a pentagon, a hexagon, a heptagon, an octagon, an ellipse, a circle, etc., which is not limited in the present disclosure. Figures 1 to 9 For illustration, let's take an octagonal support column 00 as an example. Compared to a traditional quadrilateral support column 00, a polygonal or circular support column 00 design can, on the one hand, reduce the space occupied by the support column 00 on the display panel 100. On the other hand, the longer the sides of the support column 00, the longer the circumference of the support column 00. Furthermore, the support column 00 is positioned between two adjacent first-type light-emitting units 61, forcing the leakage current to take a more complex meandering path along the support column 00, thereby increasing the creepage distance and travel path of the leakage current, thereby reducing leakage current. Thus, by configuring the support column 00 as a polygon or circle with more than four sides, space can be saved and leakage current can be reduced.

[0057] Please refer to Figure 1 The present disclosure provides a display panel 100, wherein the shortest distance H1 between the first partition portion 71 and the support column 00 is 2.5 to 4.5 microns. Optionally, the shortest distance H1 between the first partition portion 71 and the support column 00 is 2.5 to 4 microns, or the shortest distance H1 between the first partition portion 71 and the support column 00 is 2.5 to 3.5 microns, or the shortest distance H1 between the first partition portion 71 and the support column 00 is 2.5 to 3 microns, etc., which are not listed here one by one, and it is sufficient that the shortest distance H1 between the first partition portion 71 and the support column 00 is 2.5 to 4.5 microns. When the shortest distance H1 between the first partition portion 71 and the support column 00 is less than 2.5 microns, the distance between the first partition portion 71 and the support column 00 is too close, and the electric field strength is too high, which can easily lead to dielectric breakdown or surface leakage current. In addition, too small a spacing may also increase the manufacturing difficulty and cost in the process; when the shortest distance H1 between the first partition portion 71 and the support column 00 is greater than 4.5 microns, the distance between the first partition portion 71 and the support column 00 is too far, which may reduce the arrangement density of the light-emitting unit 60, resulting in a decrease in the resolution of the display panel 100 and a decrease in brightness uniformity.

[0058] Please continue to refer to Figure 1 and Figure 2The present disclosure provides a display panel 100, wherein the width L1 of the first break 81 is 8 microns to 10.5 microns. Optionally, the width L1 of the first break 81 can be 8 microns to 10 microns, or the width L1 of the first break 81 can be 8 microns to 9.5 microns, or the width L1 of the first break 81 can be 8 microns to 9 microns, or the width L1 of the first break 81 can be 8 microns to 8.5 microns... and so on, which are not listed here one by one, and it is only necessary to satisfy that the width L1 of the first break 81 is within the range of 8 microns to 10.5 microns. In the related art, the width L1 of the first break 81 is generally about 14 microns. The embodiment of the present disclosure sets the width L1 of the first break 81 between 8 microns and 10.5 microns, which can effectively reduce the width L1 of the first break 81, and thereby reduce the width of the opening facing the first partition portion 71 adjacent to the support column 00, thereby reducing leakage.

[0059] Please refer to Figure 1 The present disclosure provides a display panel 100, wherein the width L2 of the second break 82 is 1.5 microns to 3 microns. Optionally, the width L2 of the second break 82 can be 1.5 microns to 2.5 microns, or the width L2 of the second break 82 can be 1.5 microns to 2 microns... and so on, which are not listed here one by one. It is only necessary to satisfy that the width L2 of the second break 82 is within the range of 1.5 microns to 3 microns. When the width L2 of the second break 82 is less than 1.5 microns, the width of the break 80 is too small, which easily increases the difficulty and cost of the process. When the width L2 of the second break 82 is greater than 3 microns, the width L2 of the second break 82 facing the adjacent second partition portion 72 is larger, resulting in a larger leakage between the adjacent second-type light-emitting units 62, thereby reducing the brightness uniformity of the display panel 100. In this way, by setting the width L2 of the second break 82 to 1.5 microns to 3 microns, the width L2 of the second break 82 can be appropriately increased, thereby appropriately increasing the leakage current between the second type of light-emitting units 62. In this way, on the basis of relatively reducing the leakage current between the first type of light-emitting units 61 by reducing the width L1 of the first break 81, setting the support column 00, etc., the leakage current between the second type of light-emitting units 62 is appropriately increased, which can improve the leakage current uniformity of the display panel 100.

[0060] In the above embodiment, the width L1 of the first break 81 in different first partition portions 71 is set to be approximately the same, and the width L2 of the second break 82 in different second partition portions 72 is set to be approximately the same. This can make the pattern distribution at different positions in the display area approximately the same, which is beneficial to improving the brightness uniformity of the display panel 100.

[0061] Please refer to Figure 1 and Figure 9The present disclosure provides a display panel 100. In a plan view, adjacent second breaks 82 at least partially overlap in a first direction D1. The first direction D1 is parallel to the plane of the display panel 100 and parallel to the arrangement direction of the first sub-light-emitting unit 611, the second sub-light-emitting unit 612 and the support column 00.

[0062] Specifically, in an optional embodiment provided by the present disclosure, the second-type light-emitting unit 62 is not adjacent to the support column 00, and no support column 00 is included between two adjacent second-type light-emitting units 62. The second partition portion 72 at least partially surrounds the second-type light-emitting unit 62, and the second break 82 corresponding to one second-type light-emitting unit 62 overlaps at least partially with the second break 82 corresponding to another adjacent second-type light-emitting unit 62 in the first direction D1. Optionally, the two adjacent second breaks 82 can completely overlap in the first direction D1. For example, the two adjacent second breaks 82 are directly opposite each other in the first direction D1. In this case, there is no support column 00 between the two adjacent second breaks 82, that is, there is no additional leakage path extended on the path between the two adjacent second-type light-emitting units 62. In this way, the leakage of the second-type light-emitting unit 62 can be relatively increased, and the leakage uniformity of different areas on the display panel 100 can be improved as much as possible. Optionally, two adjacent second breaks 82 only partially overlap in the first direction D1. For example, two adjacent second breaks 82 are staggered by a certain distance in the first direction D1. When two adjacent second breaks 82 are staggered by a certain distance in the first direction D1, while the leakage current of the second type of light-emitting unit 62 is relatively increased, the stringent requirements on the process are reduced, and a production margin is reserved.

[0063] Figure 10 For a schematic diagram of the film structure of a light-emitting unit provided in an embodiment of the present disclosure, please refer to Figure 10 The present disclosure provides a display panel 100 , wherein a first-type light-emitting unit 61 and a second-type light-emitting unit 62 each include at least two light-emitting layers 32 .

[0064] Specifically, the display panel 100 of the disclosed embodiment is fabricated using laminated evaporation display technology, a device structure in which multiple light-emitting units 60 are connected in series via a charge-generating layer. Laminated evaporation display technology offers the advantages of low power consumption, high brightness, and a long lifespan. It is applicable to medium- and large-sized display applications such as tablets, laptops, and automotive applications, demonstrating its significant significance and promising prospects.

[0065] In an optional embodiment provided by the present disclosure, a first-type light-emitting unit 61 and a second-type light-emitting unit 62 include an anode 31, a hole transport layer HTL, an emission layer 32 (EML), an electron transport layer ETL, a charge generation layer CGL, a hole transport layer HTL, an emission layer 32 (EML), an electron transport layer ETL, an electron injection layer EIL, a cathode 33, etc. Figure 10 The example of the first type light-emitting unit 61 and the second type light-emitting unit 62 including two light-emitting layers 32 is used for illustration only, which does not represent the actual number of light-emitting layers 32 included in the first type light-emitting unit 61 and the second type light-emitting unit 62, and is not limited in this disclosure.

[0066] Figure 11 For a step diagram of a method for manufacturing a display panel provided in an embodiment of the present disclosure, please refer to Figures 1 to 11 The present disclosure provides a method for manufacturing a display panel 100, the method comprising: step S1: providing a semi-finished panel, wherein the semi-finished panel comprises a plurality of anodes 31 of a first type light emitting unit 61 and a plurality of anodes 31 of a second type light emitting unit 62; step S2: making a plurality of support columns 00 on the semi-finished panel, wherein the support columns 00 are located between two adjacent first type light emitting units 61; step S3: making a plurality of partitions 70 on the semi-finished panel, wherein the partitions 70 comprise a plurality of first partitions 71 and a plurality of second partitions 72; and making the first partitions 71 to at least partially surround the first type light emitting units 61. 1. Make a second partition portion 72 that at least partially surrounds the second type light-emitting unit 62; the first partition portion 71 includes a first break 81, and the second partition portion 72 includes a second break 82; the first break 81 is arranged adjacent to the support column 00; step S4: in the first type light-emitting unit 61 and the second type light-emitting unit 62 with the same luminous color, make the width L1 of the first break 81 larger than the width L2 of the second break 82; step S5: continue to make other film layers of the first type light-emitting unit 61 and the second type light-emitting unit 62 on the semi-finished panel, and then encapsulate it to complete the production of the display panel 100.

[0067] Specifically, in step S1, anodes 31 of multiple first-type light-emitting units 61 and multiple second-type light-emitting units 62 are prepared in advance on the semi-finished panel, and there is a certain distance between the anodes 31 of each light-emitting unit 60. Then, a pixel definition layer 40 is formed on the anode 31. The pixel definition layer 40 includes an opening, and the projection of the opening in a direction perpendicular to the semi-finished panel overlaps with the anode 31 for exposing the anode 31.

[0068] In step S2, based on step S1, multiple support columns 00 are made on the semi-finished panel. The support columns 00 are located between two adjacent first-type light-emitting units 61. Preferably, the distance between the support columns 00 and the two adjacent first-type light-emitting units 61 is equal.

[0069] In step S3, a first partition portion 71 and a second partition portion 72 are formed on the semi-finished panel. Specifically, the first partition portion 71 and the second partition portion 72 are formed on the pixel definition layer 40 formed in step S1 by etching or other methods. The first partition portion 71 and the second partition portion 72 can be grooves that do not penetrate the pixel definition layer 40, or the first partition portion 71 and the second partition portion 72 can be barrier layers. The present disclosure does not specifically limit the form of the partition portion 70. The first partition portion 71 is formed to at least partially surround the first type of light-emitting unit 61. The first partition portion 71 includes a first break 81, and the first break 81 is adjacent to the support column 00. The second partition portion 72 is formed to at least partially surround the second type of light-emitting unit 62. The second partition portion 72 includes a second break 82, and there is no support column 00 between adjacent second breaks 82. By simultaneously producing a plurality of first partition portions 71 and a plurality of second partition portions 72 on the semi-finished panel, the shapes of the first partition portions 71 corresponding to different first-type light-emitting units 61 are made the same or approximately the same, and the widths L1 of the first breaks 81 are equal or approximately equal; the shapes of the second partition portions 72 corresponding to different second-type light-emitting units 62 are made the same or approximately the same, and the widths L2 of the second breaks 82 are equal or approximately equal, which is beneficial for making the pattern distributions at different positions in the semi-finished panel approximately the same, and is beneficial for improving the leakage uniformity of different areas in the finished display panel 100.

[0070] In step S4, the width L1 of the first break 81 provided in the embodiment of the present disclosure is 8 microns to 10.5 microns, which is smaller than the width of 14 microns in the related art, which is beneficial to reducing the leakage between the first type light-emitting units 61; a second break 82 is added to the second partition portion 72 that is not adjacent to the support column 00, and the width L2 of the second break 82 is 1.5 microns to 3 microns, which can relatively increase the leakage between the second type light-emitting units 62. Since the support column 00 between adjacent first breaks 81 has the effect of extending the leakage path of the leakage between the first type light-emitting units 61 in the first direction D1, even if the width L1 of the first break 81 is set to be larger than the width L2 of the second break 82, the leakage in different areas of the display panel 100 can be made as uniform as possible.

[0071] In step S5, on the basis of step S3 and step S4, other film layers of the first type light-emitting unit 61 and the second type light-emitting unit 62 are continued to be evaporated, for example, a hole transport layer, a light-emitting layer 32, an electron transport layer, a cathode 33, etc. When the display panel 100 to be produced is a display panel 100 with a stacked evaporation display technology, at least two light-emitting layers 32 can be produced in each first type light-emitting unit 61 and each second type light-emitting unit 62, as well as a corresponding number of other film layers such as electron transport layers and hole transport layers, and then packaged to finally complete the production of the display panel 100.

[0072] Please refer to Figures 1 to 11The present disclosure provides a method for preparing a display panel 100, which generates a support column 00 and a partition portion 70 on a semi-finished panel, including: after generating the support column 00 on the semi-finished panel, making the partition portion 70 on the semi-finished panel; or, after making the partition portion 70 on the semi-finished panel, generating the support column 00 on the semi-finished panel.

[0073] Specifically, the support column 00 can be made separately, and the manufacturing process can be carried out separately from the formation of the partition portion 70. In the actual manufacturing process, the taper angle (that is, the angle between the side wall and the plane perpendicular to the semi-finished panel) of the separately made support column 00 can be appropriately increased. Figure 2 The bevel angle of the side wall edge of the support column 00 is large, which can effectively extend the leakage path between the first type of light-emitting units 61, and to a certain extent improve the obstruction effect on the leakage flow, so as to reduce the leakage flow, and help reduce the crosstalk between different light-emitting units 60, so that the display panel 100 can present a clearer and more accurate image.

[0074] Figure 12 A schematic diagram of a display device provided in an embodiment of the present disclosure is provided. Figure 12 The present disclosure provides a display device 200, comprising the display panel 100 provided by the present disclosure. The display device 200 provided by the embodiment of the present disclosure can be any electronic device with a display function, such as a touch screen display, a mobile phone, a tablet computer, a laptop computer, an e-reader, or a television. The display device 200 provided by the embodiment of the present disclosure has the beneficial effects of the display panel provided by the embodiment of the present disclosure. For details, please refer to the detailed description of the display panel in the above embodiments, and this embodiment will not be repeated here.

[0075] It is understandable that Figure 12 Only a right-angled rectangular structure is used as an example to illustrate one shape of the display device 200. In some other embodiments of the present disclosure, the display device 200 may also be circular, elliptical or any other feasible shape, and the present disclosure does not specifically limit this.

[0076] In summary, the present disclosure provides a display panel and a preparation method, and a display device, including: a plurality of first-type light-emitting units and a plurality of second-type light-emitting units; a plurality of support columns, the support columns being located between two adjacent first-type light-emitting units; a plurality of partitions, including a plurality of first partitions and a plurality of second partitions; in a plan view, the first partition at least partially surrounds the first-type light-emitting unit, and the second partition at least partially surrounds the second-type light-emitting unit; the first partition includes a first break, and the second partition includes a second break; the first break is arranged adjacent to the support columns; wherein, in the first-type light-emitting unit and the second-type light-emitting unit having the same luminous color, the width of the first break is greater than the width of the second break. By setting the width of the first break corresponding to the first-type light-emitting unit to be larger, the leakage path of the leakage current is extended by the support columns, thereby reducing the leakage current between the first-type light-emitting units; adding a break to the second partition corresponding to the second-type light-emitting unit that is not adjacent to the support column to relatively increase the leakage current between the second-type light-emitting units, thereby improving the leakage current uniformity of the display panel and improving the display effect.

[0077] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises a..." do not exclude the presence of other identical elements in the process, method, article or device that includes the above elements.

[0078] The foregoing are merely specific embodiments of the present disclosure, intended to enable those skilled in the art to understand and implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not limited to the foregoing embodiments, but is intended to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that: The display panel includes: a plurality of first-type light-emitting units and a plurality of second-type light-emitting units; a plurality of supporting columns, each of which is located between two adjacent first-type light-emitting units; A plurality of partitions, including a plurality of first partitions and a plurality of second partitions; in a plan view, the first partition at least partially surrounds the first type of light-emitting unit, and the second partition at least partially surrounds the second type of light-emitting unit; the first partition includes a first break, and the second partition includes a second break; the first break is disposed adjacent to the support column; Among them, in the first type of light-emitting units and the second type of light-emitting units with the same light-emitting color, the width of the first break is greater than the width of the second break.

2. The display panel according to claim 1, wherein: In the first type of light-emitting unit and the second type of light-emitting unit with the same light-emitting color, the distance between the first partition portion and the first type of light-emitting unit is equal to the distance between the second partition portion and the second type of light-emitting unit, and the extension length of the first partition portion is less than the extension length of the second partition portion.

3. The display panel according to claim 2, wherein: In the first type of light-emitting unit and the second type of light-emitting unit having the same light-emitting color, the extension length of the first partition portion is equal to the extension length of the second partition portion, and the distance between the first partition portion and the first type of light-emitting unit is greater than the distance between the second partition portion and the second type of light-emitting unit.

4. The display panel according to claim 1, wherein: The first partition portion corresponding to the first break includes a third break, and the third break is not adjacent to the support column; In one of the first partition portions, a width of the third break is smaller than a width of the first break.

5. The display panel according to claim 1, wherein: The first type of light-emitting unit includes a first sub-light-emitting unit and a second sub-light-emitting unit, the first sub-light-emitting unit is adjacent to the second sub-light-emitting unit, and the first sub-light-emitting unit and the second sub-light-emitting unit have different luminous colors; The first partition portion includes a first sub-partition portion and a second sub-partition portion, the first sub-partition portion at least partially surrounds the first sub-light-emitting unit, and the first sub-partition portion includes a first sub-break; the second sub-partition portion at least partially surrounds the second sub-light-emitting unit, and the second sub-partition portion includes a second sub-break; The supporting column is located between the first sub-light-emitting unit and the second sub-light-emitting unit; the first sub-break and the second sub-break face the supporting column, the width of the first sub-break is smaller than the width of the second sub-break, and the cross pressure of the first sub-light-emitting unit is greater than the cross pressure of the second sub-light-emitting unit.

6. The display panel according to claim 5, wherein: The first sub-light emitting unit is a blue light emitting element, and the second sub-light emitting unit is a red light emitting element.

7. The display panel according to claim 5, wherein: In a plan view, the first sub-break and the second sub-break have an overlapping area in a first direction, and the first direction is parallel to the plane where the display panel is located and parallel to the arrangement direction of the first sub-light-emitting unit, the second sub-light-emitting unit and the supporting column; In the first direction, the support pillars cover the overlapping area.

8. The display panel according to claim 1, wherein: The orthographic projection of the support column on the plane where the display panel is located is a polygon or a circle with more than 4 sides.

9. The display panel according to claim 1, wherein: The shortest distance between the first partition portion and the support pillar is 2.5 micrometers to 4.5 micrometers.

10. The display panel according to claim 1, wherein The width of the first fracture is 8 micrometers to 10.5 micrometers.

11. The display panel according to claim 1, wherein The width of the second fracture is 1.5 microns to 3 microns.

12. The display panel according to claim 5, wherein: In a plan view, adjacent second breaks at least partially overlap in a first direction, and the first direction is parallel to the plane of the display panel and parallel to the arrangement direction of the first sub-light-emitting unit, the second sub-light-emitting unit and the supporting column.

13. The display panel according to claim 1, wherein Each of the first-type light-emitting unit and the second-type light-emitting unit includes at least two light-emitting layers.

14. A method for preparing a display panel, characterized in that: The method comprises: Providing a semi-finished panel, wherein the semi-finished panel includes a plurality of first-type light-emitting units and anodes of a plurality of second-type light-emitting units; Making a plurality of support columns on the semi-finished panel, wherein the support columns are located between two adjacent first-type light-emitting units; A plurality of partitions are formed on the semi-finished panel, the partitions including a plurality of first partitions and a plurality of second partitions; the first partitions are formed to at least partially surround the first type of light-emitting units, and the second partitions are formed to at least partially surround the second type of light-emitting units; the first partitions include a first break, and the second partitions include a second break; the first break is disposed adjacent to the support column; In the first type of light-emitting unit and the second type of light-emitting unit having the same light-emitting color, the width of the first fracture is made larger than the width of the second fracture; The other film layers of the first type of light emitting units and the second type of light emitting units are further manufactured on the semi-finished panel, and then packaged to complete the manufacture of the display panel.

15. The method according to claim 14, characterized in that The step of generating support columns and partitions on the semi-finished panel includes: After the support columns are generated on the semi-finished panel, the partition portion is manufactured on the semi-finished panel; or after the partition portion is manufactured on the semi-finished panel, the support columns are generated on the semi-finished panel.

16. A display device, characterized in that: A display panel comprising any one of claims 1 to 13.

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