CN113140661B - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN113140661B
CN113140661B CN202110485826.1A CN202110485826A CN113140661B CN 113140661 B CN113140661 B CN 113140661B CN 202110485826 A CN202110485826 A CN 202110485826A CN 113140661 B CN113140661 B CN 113140661B
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substrate
supporting
light
display panel
support
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CN113140661A (en
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于泉鹏
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Shanghai Tianma Microelectronics Co Ltd
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Shanghai Tianma Microelectronics Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/483—Containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/16—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits
    • H01L25/165—Containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/16—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits
    • H01L25/167—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits comprising optoelectronic devices, e.g. LED, photodiodes

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  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
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  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The embodiment of the invention discloses a display panel and a display device, wherein the display panel comprises: a first substrate; the light-emitting device is positioned on the first side of the first substrate, one side of the light-emitting device facing the first substrate comprises a first area and a second area, and the distance between the first area and the first substrate is larger than that between the second area and the first substrate; the supporting structure is located on the first side of the first substrate and supports the light-emitting device and comprises a first supporting portion and a second supporting portion, the first supporting portion is supported between the first substrate and the first area, the second supporting portion is supported between the first substrate and the second area, and in the direction perpendicular to the plane of the first substrate, the distance between the first end face of the first supporting portion, which deviates from one side of the first substrate, and the first substrate is larger than the distance between the first end face of the second supporting portion, which deviates from one side of the first substrate, and the first substrate. In the embodiment of the invention, the support structure is adopted to support the light-emitting device, so that the light-emitting device can be prevented from being inclined, the light emission of the display panel is vertical, and the display effect is improved.

Description

Display panel and display device
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel and a display device.
Background
The power consumption of a Micro light emitting diode display (Micro LED) is only one tenth of that of an LCD display, the Micro LED display belongs to self-luminescence like an OLED display, the distance between pixels can be very small, the Micro LED display is suitable for the requirement of high resolution of the display at present, and the Micro LED display has the characteristics of low power consumption and quick response. Therefore, micro light emitting diode displays are a hot spot of recent panel industry research.
At present, when a Micro LED display is manufactured, a Micro light emitting diode is transferred to an electrode corresponding to a target substrate, and then the Micro light emitting diode is electrically connected to the substrate, thereby forming a display device.
However, the existing Micro LED display has a problem of poor panel quality in detection. How to improve the quality of the Micro LED display becomes a problem to be solved urgently.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, and aims to solve the problem that the quality of the existing display panel is poor.
An embodiment of the present invention provides a display panel, including:
a first substrate;
the light-emitting device is positioned on the first side of the first substrate, one side of the light-emitting device, which faces the first substrate, comprises a first area and a second area, and in the direction perpendicular to the plane of the first substrate, the distance between the first area and the first substrate is larger than the distance between the second area and the first substrate;
the supporting structure is located on the first side of the first substrate and supports the light-emitting device and comprises a first supporting portion and a second supporting portion, the first supporting portion is supported between the first substrate and the first area, the second supporting portion is supported between the first substrate and the second area, and in the direction perpendicular to the plane where the first substrate is located, the first supporting portion deviates from the first end face on one side of the first substrate and the interval between the first substrate are larger than the interval between the second supporting portion and the first end face on one side of the first substrate and the interval between the first substrate.
Based on the same inventive concept, the embodiment of the invention also provides a display device, which comprises the display panel.
In the embodiment of the invention, one side of the light-emitting device facing the first substrate comprises the first area and the second area, in the direction perpendicular to the plane of the first substrate, the distance between the first end surface of the first supporting part and the first substrate is larger than the distance between the first end surface of the second supporting part and the first substrate, so that the first supporting part with relatively higher height is supported between the first substrate with larger distance and the first area, and the second supporting part with relatively lower height is supported between the first substrate with smaller distance and the second area.
Drawings
To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the technical solutions in the prior art, and it is obvious that the drawings in the following description, although being some specific embodiments of the present invention, can be extended and extended to other structures and drawings by those skilled in the art according to the basic concepts of the device structure, the driving method and the manufacturing method disclosed and suggested by the various embodiments of the present invention, without making sure that these should be within the scope of the claims of the present invention.
Fig. 1 is a schematic diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a film structure of a display panel according to an embodiment of the present invention;
fig. 3 is a schematic view of a light emitting device provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram of another display panel provided in an embodiment of the invention;
FIG. 5 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of another display panel provided in an embodiment of the invention;
FIG. 11 is a schematic top view of the display panel of FIG. 7;
fig. 12 is a schematic top view of a display panel according to an embodiment of the invention;
FIG. 13 is a schematic top view of another display panel provided in accordance with an embodiment of the present invention;
FIG. 14 is a schematic top view of another display panel provided in accordance with an embodiment of the present invention;
FIG. 15 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 16 is a schematic top view of another display panel according to an embodiment of the present invention;
FIG. 17 is a schematic top view of another display panel provided in accordance with an embodiment of the present invention;
FIG. 18 is a diagram of another display panel according to an embodiment of the present invention;
FIG. 19 is a schematic top view of another display panel provided in accordance with an embodiment of the present invention;
fig. 20 is a schematic top view of another display panel according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described through embodiments with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the basic idea disclosed and suggested by the embodiments of the present invention, are within the scope of the present invention.
The existing Micro LED display finds the problem of poor panel quality in detection. The inventor researches and discovers that the micro light-emitting diode has a deflection problem after the micro light-emitting diode is transferred and placed on the electrode corresponding to the target substrate and is electrically connected with the electrode, and the display effect is influenced. Accordingly, embodiments of the present invention provide a display panel, in which a support structure for supporting a light emitting device is disposed, so as to prevent the light emitting device from being tilted, adjust a light emitting angle of the display panel, and improve quality and display effect of the display panel.
Fig. 1 is a schematic view of a display panel according to an embodiment of the present invention. As shown in fig. 1, the display panel provided in the present embodiment includes: a first substrate 100; the light emitting device 200 is positioned on the first side of the first substrate 100, the side of the light emitting device 200 facing the first substrate 100 comprises a first region 201 and a second region 202, and in the direction Y perpendicular to the plane of the first substrate 100, the distance H1 between the first region 201 and the first substrate 100 is greater than the distance H2 between the second region 202 and the first substrate 100; the support structure 300 is located on the first side of the first substrate 100 and supports the light emitting device 200, the support structure 300 includes a first support portion 310 and a second support portion 320, the first support portion 310 is supported between the first substrate 100 and the first region 201, the second support portion 320 is supported between the first substrate 100 and the second region 202, and in a direction Y perpendicular to the plane of the first substrate 100, an interval between a first end surface of the first support portion 310 facing away from the first substrate 100 and the first substrate 100 is greater than an interval between a first end surface of the second support portion 320 facing away from the first substrate 100 and the first substrate 100.
In this embodiment, the display panel includes a first substrate 100, and the first substrate 100 may be an array substrate, where the array substrate includes a substrate, and an array metal layer and an interlayer insulating layer formed on the substrate, where the array metal layer includes at least a gate metal layer and a source/drain metal layer, so as to form a driving circuit including a transistor and the like, and the driving circuit is configured to drive the light emitting device 200 to emit light.
Fig. 2 is a schematic diagram illustrating a film structure of a display panel according to an embodiment of the present invention. As shown in fig. 2, the first substrate 100 includes a driving circuit array including a plurality of driving circuits 130, and it is understood that only the structure of one driving circuit 130 is illustrated in fig. 2. The driving circuit 130 is formed by electrically connecting a plurality of transistors and a storage capacitor, and the specific circuit structure thereof is not described herein. The driving circuit 130 is disposed corresponding to the light emitting device 200 to drive the corresponding light emitting device 200 to emit light. A light emitting device 200 is disposed on a first side of the first substrate 100, an electrode layer 110 and a pad layer 120 and a support structure 300 are disposed between the first substrate 100 and the light emitting device 200, the light emitting device 200 is electrically connected to the electrode layer 110 on the first substrate 100 through the pad layer 120, and a driving circuit 130 supplies an electrical signal to the light emitting device 200 through a driving electrode in the electrode layer 110 to cause it to emit light. It is understood that the film structure of the display panel includes, but is not limited to, the film provided above, and also includes other film layers not shown, which are not described herein in detail.
The display panel further includes a plurality of light emitting devices 200, the light emitting devices 200 are located on the first side of the first substrate 100, the first side of the first substrate 100 is an upper side of the first substrate 100 as shown in fig. 1, and a side of the light emitting devices 200 facing the first substrate 100 is a lower side of the light emitting devices 200. The side of the light emitting device 200 facing the first substrate 100 includes a first region 201 and a second region 202, and it is understood that the first region 201 and the second region 202 of the light emitting device 200 are two regions of the lower side surface of the light emitting device 200. In the direction Y perpendicular to the plane of the first substrate, the heights of the first region 201 and the second region 202 of the light emitting device 200 are different, which can provide guidance for the alignment between the light emitting device 200 and the electrodes on the first substrate 100, and prevent the light emitting device 200 and the electrodes on the first substrate 100 from being aligned reversely.
Fig. 3 is a schematic view of a light emitting device according to an embodiment of the present invention. As shown in fig. 3, the optional light emitting device 200 includes a micro light emitting diode. The micro light emitting diode includes a light emitting structure 210 and two light emitting electrodes 221 and 222 located on the same side of the light emitting structure 210. The light emitting structure 210 of the optional micro light emitting diode comprises at least a first type semiconductor layer 211, an active layer 213 and a second type semiconductor layer 212, which are sequentially stacked, wherein a light emitting electrode 221 is positioned on a side of the first type semiconductor layer 211 facing the first substrate 100, and another light emitting electrode 222 is positioned on a side of the second type semiconductor layer 212 facing the first substrate 100. Since the two light-emitting electrodes 221 are usually made of the same metal layer, the actually produced micro light-emitting diode has end faces with different heights on the side facing the first substrate 100.
One end surface of the light emitting device 200 spaced apart from the first substrate 100 by a large distance is defined as a first region 201 of the light emitting device 200, and one end surface of the light emitting device 200 spaced apart from the first substrate 100 by a small distance is defined as a second region 202 of the light emitting device 200. The distance H1 between the first region 201 and the first substrate 100 is greater than the distance H2 between the second region 202 and the first substrate 100 in the direction Y perpendicular to the plane of the first substrate 100.
It is understood that the structure of the light emitting device shown in fig. 3 is only a simple structure, wherein the first type semiconductor layer 211 and the second type semiconductor layer 212 should be a multi-film stack structure, and the light emitting device further includes other film structures, which are not described herein again.
The light emitting device 200 is bonded to the first substrate 100. In the direction Y perpendicular to the plane of the first substrate 100, the heights of the first region 201 and the second region 202 of the light emitting device 200 are not the same, and if the light emitting device and the first substrate are directly bonded, the light emitting device may be inclined after bonding, which may affect the verticality of the light emitted from the display panel. Based on this, the support structure 300 is disposed on the first side of the first substrate 100, and the support structure 300 is used for supporting the light emitting device 200, preventing the light emitting device from tilting, and improving the phenomenon that the light emitting device tilts after the existing light emitting device is bonded with the first substrate.
Specifically, the support structure 300 includes a first support portion 310 and a second support portion 320, the first support portion 310 is supported between the first substrate 100 and the first region 201, and optionally, a first end surface of the first support portion 310 facing away from the first substrate 100 is attached to the first region 201. The second supporting portion 320 is supported between the first substrate 100 and the second region 202, and optionally, a first end surface of the second supporting portion 320 facing away from the first substrate 100 is attached to the second region 202. The support structure 300 may support the light emitting device 200 to prevent the light emitting device from being tilted.
In a direction Y perpendicular to the plane of the first substrate 100, a distance H1 between the first region 201 and the first substrate 100 is greater than a distance H2 between the second region 202 and the first substrate 100, the first support portion 310 is supported between the first substrate 100 and the first region 201, and the second support portion 320 is supported between the first substrate 100 and the second region 202, so that in the direction Y perpendicular to the plane of the first substrate 100, a distance between a first end surface of the first support portion 310 and the first substrate 100 is greater than a distance between a first end surface of the second support portion 320 and the first substrate 100. The first support part 310 effectively supports the height of the first region 201 of the light emitting device 200, and the second support part 320 supports the height of the second region 202 of the light emitting device 200, which can prevent the light emitting device 200 from being skewed.
In the embodiment of the invention, one side of the light-emitting device, which faces the first substrate, comprises the first area and the second area, in the direction perpendicular to the plane of the first substrate, the distance between the first end surface of the first supporting part and the first substrate is larger than the distance between the first end surface of the second supporting part and the first substrate, so that the first supporting part with relatively higher height is supported between the first substrate with larger distance and the first area, and the second supporting part with relatively lower height is supported between the first substrate with smaller distance and the second area.
Exemplarily, referring to fig. 4, a schematic diagram of another display panel provided in an embodiment of the present invention is shown. As shown in fig. 4, the first supporting portion 310 and the second supporting portion 320 may be an integrated structure, a first end surface of the first supporting portion 310 and a first end surface of the second supporting portion 320 jointly form a first step surface 301, the first region 201 and the second region 202 of the light emitting device 200 jointly form a second step surface, and the first step surface 301 and the second step surface are matched.
In this embodiment, the supporting structure 300 is a unitary structure. A portion of the support structure 300 supporting the first substrate 100 and the first region 201 may be defined as a first support 310, and a portion of the support structure 300 supporting the first substrate 100 and the second region 202 may be defined as a second support 320. In actual production, an integral supporting structure may be formed, and then, one side of the supporting structure, which is away from the first substrate, is subjected to etching processing, so as to form a first step surface on one side of the supporting structure, which is away from the first substrate, and specifically, the first step surface is fitted with the second step surface of the light-emitting device.
As described above, the supporting structure 300 is a unitary structure, and a side thereof facing away from the first substrate 100 is engaged with the second step surface of the light emitting device 200, so that the supporting structure 300 is located between the first region 201 and the second region 202 in the direction X parallel to the plane of the first substrate 100. The supporting structure 300 may be used to support the light emitting device 200, effectively prevent the light emitting device 200 from being tilted, and isolate the bonding film layers corresponding to the first region 201 and the second region 202, thereby performing an insulating function. The design that the second step surface of the light emitting device 200 is matched with the first step surface of the supporting structure 300 not only can play a role of supporting the light emitting device 200, but also can provide a guide for the alignment between the light emitting device 200 and the electrode on the first substrate 100, thereby avoiding the dislocation between the light emitting device 200 and the electrode on the first substrate 100 or the contraposition between the light emitting device 200 and the electrode.
As shown in fig. 1, the alternative light emitting device 200 includes a light emitting structure body 210, and a first light emitting electrode 221 and a second light emitting electrode 222 on a side of the light emitting structure body 210 facing the first substrate 100; the side of the light emitting structure body 210 facing the first substrate 100 includes a first region 201 and a second region 202. In this embodiment, the side of the light emitting structure body 210 facing the first substrate 100 includes the first region 201 and the second region 202, and then the first support part 310 is supported between the first substrate 100 and the first region 201 of the light emitting structure body 210, and the second support part 320 is supported between the first substrate 100 and the second region 202 of the light emitting structure body 210. The light emitting device 200 can be supported, the light emitting device 200 can be effectively prevented from being inclined, and the vertical angle of the light emitted from the display panel can be adjusted.
Fig. 5 is a schematic view of another display panel according to an embodiment of the present invention. As shown in fig. 5, the alternative light emitting device 200 includes a light emitting structure body 210, and a first light emitting electrode 221 and a second light emitting electrode 222 on a side of the light emitting structure body 210 facing the first substrate 100; the first region 201 is located on a side of the first light emitting electrode 221 facing the first substrate 100, and the second region 202 is located on a side of the second light emitting electrode 222 facing the first substrate 200.
In this embodiment, a side of the first light emitting electrode 221 facing the first substrate 100 is the first region 201, and a side of the second light emitting electrode 222 facing the first substrate 100 is the second region 202, so that the first supporting portion 310 is supported between the first substrate 100 and the first light emitting electrode 221, and the second supporting portion 320 is supported between the first substrate 100 and the second light emitting electrode 222. The material of the optional support structure 300 is an insulating material, which can prevent a short circuit between the first substrate 100 and the light emitting device 200 on the basis of supporting the light emitting device 200.
As described above, the supporting portion is supported on the light emitting electrode, and not only can play a role of supporting the light emitting device, but also the height of the supporting portion can be compensated by the light emitting electrode, so that the height of the supporting portion in the Y direction can be reduced. In general, the higher the height of the support structure in the Y direction, the larger the area it needs to occupy, and then the light-emitting electrode is used to compensate the height of the support portion, so that the support portion can be prevented from occupying more area.
In other embodiments, a side of the light emitting structure facing the first substrate may include a first region, and a side of the second light emitting electrode facing the first substrate may be a second region, and the first support portion may be supported between the first substrate and the first region of the light emitting structure, and the second support portion may be supported between the first substrate and the second light emitting electrode.
Fig. 6 is a schematic view of another display panel according to an embodiment of the present invention. As shown in fig. 6, a side of the light emitting structure body 210 facing the first substrate 100 may be a first region 201, and a side of the first light emitting electrode 221 facing the first substrate 100 may include a second region 202, so that the first support portion 310 is supported between the first substrate 100 and the first light emitting electrode 221, and the second support portion 320 is supported between the first substrate 100 and the second region 202 of the light emitting structure body 210.
In this embodiment, a distance between the first end surface of the first support portion 310 and the first substrate 100 is greater than a distance between the first end surface of the second support portion 320 and the first substrate 100, and if the first support portion 310 and the second support portion 320 both contact the first side of the first substrate 100, a height of the first support portion 310 is greater than a height of the second support portion 320 in a direction perpendicular to a plane of the first substrate 100.
For the supporting columns in the display panel, the area occupied by the supporting columns increases with the increase of the height direction of the supporting columns, the height direction of the supporting columns is perpendicular to the plane of the display panel, that is, the higher the height of the supporting columns is, the larger the area occupied by the supporting columns on the substrate is, and conversely, the smaller the height of the supporting columns is, the smaller the area occupied by the supporting columns on the substrate is. Accordingly, the area occupied by the first support part 310 on the first substrate 100 is larger than the area occupied by the second support part 320 on the first substrate 100.
In this embodiment, the first supporting portion 310 is designed to be supported on the first light emitting electrode 221, and the height of the first supporting portion 310 is compensated by the first light emitting electrode 221, so that the height of the first supporting portion 310 is reduced, and the area occupied by the first supporting portion 310 on the first substrate 100 can be further reduced. The difference between the heights of the first supporting portion 310 and the second supporting portion 320 is reduced, and the difference between the corresponding size parameters of the first supporting portion 310 and the second supporting portion 320 is reduced, so that the manufacturing difficulty can be reduced; even the heights of the first and second supporting parts 310 and 320 can be made uniform by proper design.
The second supporting portion 320 is supported on the second region 202 of the light emitting structure 210, which not only can support the second region 202, but also can increase the compensation overflow space of the second pad 122 to prevent the short circuit caused by pad overflow. Specifically, the distance between the second region 202 and the first substrate 100 is small, and the distance between the first region 201 and the first substrate 100 is large, so that when the light emitting device 200 is pressed against the first substrate 100, under the condition that no short circuit occurs, obviously, the space for the second pad 122 to overflow to both sides in the horizontal direction is relatively small, and the space for the first pad 121 to overflow to both sides in the horizontal direction is relatively large. In the present embodiment, the second supporting portion 320 is supported on the second region 202 of the light emitting structure 210 to increase the compensation overflow space of the second pad 122, thereby preventing the second pad 122 from overflowing and causing a short circuit.
In this embodiment, the optional first supporting portion 310 is located on a side of the first driving electrode 111 facing the second driving electrode 112, so that the first supporting portion 310 can isolate the first pad 121 from the second pad 122, thereby avoiding the problem of short circuit caused by pad layer overflow. In addition, the area of the first light emitting electrode 221 may be as large as possible, and the first light emitting electrode 221 contacts the first supporting portion 310, so as to compensate the height of the first supporting portion 310; the area of the first light emitting electrode 221 can be made as large as possible, so that the light emitting device 200 can be aligned with the electrode on the first substrate 100 conveniently, and alignment errors can be prevented; in addition, the first end surface of the first supporting portion 310 is larger than the second supporting portion 320, and thus the area of the first light emitting electrode 221 is larger, and then the end surface of the first light emitting electrode 221 is larger, so that the first supporting portion 310 and the first light emitting electrode 221 can be conveniently arranged in contact with each other by using the remaining space of the first light emitting electrode 221.
Fig. 7 is a schematic diagram of another display panel according to an embodiment of the present invention. As shown in fig. 7, the alternative light emitting device 200 includes a light emitting structure body 210, and a first light emitting electrode 221 and a second light emitting electrode 222 on a side of the light emitting structure body 210 facing the first substrate 100; the display panel further includes: an electrode layer on a first side of the first substrate 100 and a pad layer on a side of the electrode layer facing away from the first substrate 100, the electrode layer including a first driving electrode 111 and a second driving electrode 112, the pad layer including a first pad 121 and a second pad 122; the first driving electrode 111 electrically contacts the first light emitting electrode 221 through the first pad 121, and the second driving electrode 112 electrically contacts the second light emitting electrode 222 through the second pad 122.
In this embodiment, the optional liner layer is a conductive bonding layer, the conductive bonding layer includes conductive materials such as conductive particles, and when the liner layer is heated, the liner is heated and melted to further achieve eutectic bonding between the driving electrode and the light emitting electrode, and the light emitting electrode is electrically connected to the driving electrode through the liner after bonding.
The manufacturing process of the display panel includes a bonding stage in which the light emitting device 200 is transferred onto the first substrate 100, and the liner layer is heated and melted so that the light emitting electrode is bonded to and electrically conducted with the driving electrode through the liner layer.
The operation process of the display panel includes a light emitting stage in which the first substrate 100 provides a voltage signal having a certain voltage difference to the first driving electrode 111 and the second driving electrode 112, and it can be understood that the voltage signal can make the light emitting device 200 emit light. A current flows through the light emitting structure body 210 and the light emitting device 200 may emit light.
The optional first supporting part is positioned on one side of the first driving electrode facing the second driving electrode; and/or the second support part is positioned on one side of the second driving electrode facing the first driving electrode. The optional first supporting part is positioned on one side of the first driving electrode, which is far away from the second driving electrode; and/or the second support part is positioned on one side of the second driving electrode, which is far away from the first driving electrode.
Referring to fig. 7, an optional first supporting part 310 is positioned at a side of the first driving electrode 111 facing the second driving electrode 112; the second support portion 320 is located on a side of the second driving electrode 112 facing the first driving electrode 111. The first supporting portion 310 and the second supporting portion 320 are both located between the first driving electrode 111 and the second driving electrode 112, so that the first supporting portion 310 and the second supporting portion 320 not only have a supporting function to prevent the light emitting device 200 from tilting, but also have an insulating and isolating function to prevent the first driving electrode 111 and the second driving electrode 112 from being short-circuited, and can avoid the problem of pad layer short-circuit caused by the overflow of the first pad 121 or the overflow of the second pad 122.
Fig. 8 is a schematic view of another display panel according to an embodiment of the present invention. As shown in fig. 8, the optional first supporting part 310 is located at a side of the first driving electrode 111 facing the second driving electrode 112; the second support portion 320 is located on a side of the second driving electrode 112 facing away from the first driving electrode 111. The first support part 310 is used to support the first substrate 100 and the first region 201 to prevent the light emitting device 200 from being skewed, and is also located between the first driving electrode 111 and the second driving electrode 112 to prevent a short circuit between the driving electrodes or a short circuit caused by pad overflow. The second supporting portion 320 is used for supporting the first substrate 100 and the second region 202 to prevent the light emitting device 200 from being inclined, and is located on a side of the second driving electrode 112 away from the first driving electrode 111, so that the second supporting portion can be used as an insulating isolation structure to be isolated between adjacent light emitting devices 200 to prevent the driving electrode layers of the adjacent light emitting devices 200 from being short-circuited, and can avoid the problem of pad layer short-circuiting caused by overflow of pads corresponding to the adjacent light emitting devices 200.
Fig. 9 is a schematic view of another display panel according to an embodiment of the present invention. As shown in fig. 9, the optional first supporting part 310 is located on a side of the first driving electrode 111 facing away from the second driving electrode 112; the second support portion 320 is located on a side of the second driving electrode 112 facing away from the first driving electrode 111. The support structure plays a role of supporting to prevent the light emitting device from being tilted; the support structure may also prevent a short circuit of the driving electrode layer or the pad layer of the adjacent light emitting device.
In other embodiments, the second supporting portion may be located on a side of the second driving electrode facing the first driving electrode, and the first supporting portion may be located on a side of the first driving electrode facing away from the second driving electrode. The support structure plays a role of supporting to prevent the light emitting device from being tilted; the second support part can also prevent the short circuit of the driving electrode layer or the liner layer corresponding to the light-emitting device; the first support part may also prevent a short circuit of the driving electrode layer or the pad layer of the adjacent light emitting device.
Fig. 10 is a schematic view of another display panel according to an embodiment of the present invention. As shown in fig. 10, the second supporting portion 320 may be disposed in contact with the second driving electrode 112 and/or the second supporting portion 320 may be disposed in contact with the second pad 122 in the direction X parallel to the plane of the first substrate. The second supporting portion 320 can prevent the second pad 122 from overflowing, isolate the pad layers of the adjacent light emitting devices 200, and avoid the problem of short circuit caused by the overflow of the pads of the adjacent light emitting devices 200; the second supporting portion 320 may also isolate the driving electrodes of the adjacent light emitting devices 200, thereby preventing the driving electrodes of the adjacent light emitting devices 200 from being short-circuited. It can be understood that the distance between the second region 202 and the first substrate 100 is smaller than the distance between the first region 201 and the first substrate 100, so that when the light emitting device 200 is pressed against the first substrate 100, an overflow space between the second region 202 and the first substrate 100 is smaller, and the overflow of the second pad 122 is likely to contact with other electrodes or pads, thereby causing a short circuit risk, and the second supporting portion 320 is disposed at a position adjacent to the second pad 122, so as to limit an overflow area of the second pad 122, thereby preventing the light emitting device 200 from short circuit.
For the above embodiment, the shape of the first supporting portion and/or the second supporting portion may be a strip shape in a direction parallel to the plane of the first substrate. Referring to fig. 11, which is a schematic top view of the display panel shown in fig. 7, the first supporting portion 310 and the second supporting portion 320 are both strip-shaped and are supported between the first driving electrode 111 and the second driving electrode 112 corresponding to a light emitting device.
It is to be understood that the illustrated structures of the first support portion and the second support portion are only some examples of the present invention, and the embodiments of the present invention are not limited thereto and are not specifically exemplified here.
Illustratively, in a direction parallel to a plane of the first substrate, the first supporting portion has one of the following structures: 1) The first supporting part is annular and surrounds the first driving electrode; 2) The first supporting part is in a semicircular ring shape and semi-surrounds the first driving electrode; 3) The first supporting part comprises a plurality of independent first supporting columns which are distributed around the first driving electrode; the structure of the second support part is one of the following cases: 1) The second supporting part is annular and surrounds the second driving electrode; 2) The second supporting part is in a semicircular ring shape and semi-surrounds the second driving electrode; 3) The second supporting portion comprises a plurality of independent second supporting columns which are distributed around the second driving electrode.
Referring to fig. 12, which is a schematic top view of a display panel according to an embodiment of the present invention, as shown in fig. 12, the first supporting portion 310 may be annular and surrounds the first driving electrode 111; the second supporting portion 320 is annular and surrounds the second driving electrode 112. Referring to fig. 12, which is a schematic top view of another display panel according to an embodiment of the present invention, as shown in fig. 12, the first supporting portion 210 may be semi-circular and semi-surrounds the first driving electrode 111; the second support 320 has a semicircular shape and semi-surrounds the second driving electrode 112. The supporting structure not only plays a role in supporting the light emitting device to prevent deflection, but also can prevent the adjacent light emitting device or the corresponding driving electrode in the light emitting device from short circuit, and prevent the phenomena of pad overflow and the like.
Referring to fig. 14, which is a schematic top view of another display panel according to an embodiment of the present invention, as shown in fig. 14, the optional first supporting portion 310 includes a plurality of independent first supporting pillars 311, and the plurality of first supporting pillars 311 are distributed around the first driving electrode 111; the second supporting portion 320 includes a plurality of independent second supporting pillars 321, and the plurality of second supporting pillars 321 are distributed around the second driving electrode 112. The supporting structure can play a role in supporting the light-emitting device, prevent the light-emitting device from being inclined and ensure the vertical effect of light emission of the display panel; it is also possible to prevent adjacent driving electrodes from being short-circuited or to prevent the pad from overflowing.
It is understood that the above combination structure of the first support portion and the second support portion is only a partial example of the present invention, the embodiment of the present invention is not limited thereto, and the first support portion and the second support portion may also constitute other combination structures, which are not specifically illustrated herein.
Illustratively, optionally for the first support and the second support, at least one of the two supports comprises at least one primary support column and at least one secondary support column; in the direction perpendicular to the plane of the first substrate, the size of the auxiliary support columns in the support parts is smaller than that of the main support columns. Optionally, in a direction perpendicular to a plane of the first substrate, a size of the main support column in the second support portion is smaller than a size of the auxiliary support column in the first support portion. The main supporting column and the auxiliary supporting column are adopted in the supporting part for supporting together, so that the distance between the light-emitting device and the first substrate can be controlled more accurately.
In this embodiment, the supporting portion includes a main supporting column and an auxiliary supporting column, which can support the light emitting device to prevent the light emitting device from tilting. The supporting part comprises a main supporting column and an auxiliary supporting column, when the light-emitting device and the first substrate are pressed, if the main supporting column is pressed or damaged, the auxiliary supporting column can play a supporting role, so that the stability of the light-emitting device and the first substrate in the pressing process is improved, and the supporting effect is ensured. In addition, the supporting part comprises a main supporting column and an auxiliary supporting column, if the light-emitting device and the first substrate are in pressing fit, dislocation is generated, the main supporting column cannot play an effective supporting role, and then the auxiliary supporting column can play a supporting role to prevent the light-emitting device from being inclined.
Referring to fig. 15, which is a schematic view of another display panel according to an embodiment of the present invention, as shown in fig. 15, an optional first supporting portion 310 includes a main supporting column 310a and an auxiliary supporting column 310b; the size of the auxiliary support column 310b in the first supporting part 310 is smaller than that of the main support column 310a in a direction Y perpendicular to the plane of the first substrate.
In this embodiment, the main supporting pillar 310a of the first supporting portion 310 plays a main supporting role, the auxiliary supporting pillar 310b plays an auxiliary supporting role, and an end surface of the main supporting pillar 310a facing away from the first substrate 100 is engaged with the first area of the light emitting device 200. It is understood that the light emitting device 200 is bonded to the first substrate 100 and the main support pillars 310a are engaged with the first region of the light emitting device 200, in which case, if the height of the light emitting device 200 is further lowered due to excessive melting of the pad or excessive bonding force, the auxiliary support pillars 310b are engaged with the first region of the light emitting device 200 and the auxiliary support pillars 310b support the light emitting device 200 together with the main support pillars 310a, thereby preventing the light emitting device 200 from being tilted.
In other embodiments, the second supporting portion may further include at least one main supporting column and at least one auxiliary supporting column, and the supporting manner of the second supporting portion is the same as that of the first supporting portion, which is not described herein again.
Optionally, in a direction parallel to a plane where the first substrate is located, each support pillar in the first support portion is located on the same side of the first driving electrode; and/or the support columns in the second support part are positioned on the same side of the second drive electrode. Referring to fig. 16, which is a schematic top view of another display panel according to an embodiment of the present invention, as shown in fig. 16, the main supporting column 310a and the auxiliary supporting column 310b of the first supporting portion may be located on the same side of the first driving electrode 111, optionally in a direction parallel to the plane of the first substrate; the main support post 320a and the auxiliary support post 320b in the second support part are located at the same side of the second driving electrode 112. The first and second support parts support the light emitting device 200 together to prevent the light emitting device 200 from being skewed.
It is to be understood that fig. 16 is only an example, and the position of the first support portion and the position of the second support portion may be changed to another, not limited thereto.
Referring to fig. 17, which is a schematic top view of another display panel according to an embodiment of the present invention, as shown in fig. 17, optionally, in a direction parallel to a plane of the first substrate, a structure of the first supporting portion may be at least one of the following: 1) The main support pillars 310a of the first support portion are uniformly distributed around the first driving electrode 111; 2) The auxiliary supporting columns 310b in the first supporting portion are uniformly distributed around the first driving electrode 111; the structure of the second support part is at least one of the following conditions: 1) The main supporting pillars 320a in the second supporting portion are uniformly distributed around the second driving electrode 112; 2) The auxiliary supporting posts 320b in the second supporting portion are uniformly distributed around the second driving electrode 112. As shown in fig. 17, the main support columns and the auxiliary support columns in the support portion are alternatively distributed at intervals in a direction parallel to the plane of the first substrate.
In this embodiment, the support pillars in the first support portion are uniformly distributed around the first driving electrode 111, so that the heights of the first regions of the light emitting devices are consistent; the support pillars in the second support portion are uniformly distributed around the second driving electrode 112, so that the heights of the second regions of the light emitting devices can be uniform. The light emitting device is prevented from being skewed.
Referring to fig. 18, a schematic diagram of another display panel according to an embodiment of the present invention is shown, as shown in fig. 18, a main supporting column and an auxiliary supporting column in an optional supporting portion are an integrated structure. In this embodiment, the main supporting column and the auxiliary supporting column in the first supporting portion 310 may be an integrated structure, and the main supporting column and the auxiliary supporting column in the second supporting portion 320 may be an integrated structure. Specifically, an end surface of the first supporting portion 310, which faces away from the first substrate 100, of the main supporting column contacts the first area 201, and an end surface of the second supporting portion 320, which faces away from the first substrate 100, of the main supporting column contacts the second area 202. The main support columns in the support part play a main supporting role, and if the height of the light emitting device 200 with respect to the first substrate 100 is lowered, the auxiliary support columns in the support part may contact the light emitting device 200, thereby supporting the light emitting device together with the main support columns, and improving the supporting stability.
Referring to fig. 19, which is a schematic top view of another display panel according to an embodiment of the present invention, as shown in fig. 19, an orthographic projection of the optional main supporting pillars or the auxiliary supporting pillars on a plane of the first substrate is a stripe shape extending along a first direction, where the first direction is parallel to one side edge of the driving electrode. In this embodiment, the orthographic projection of the main supporting pillar 310a on the plane of the first substrate in the first supporting portion may be a stripe extending along a first direction, wherein the first direction is parallel to one side edge of the first driving electrode 111 facing the second driving electrode 112. The optional first support portion includes a plurality of independent auxiliary support posts 310b distributed around the first driving electrode 111. It is to be understood that fig. 19 is only an example, and the positions or shapes, etc. of the first support portion and the second support portion are not limited thereto. The main supporting column 310a in the first supporting portion is in a strip shape extending along the first direction, so that the design difficulty and the manufacturing difficulty of the main supporting column in the first supporting portion can be reduced.
Referring to fig. 20, which is a schematic top view of another display panel according to an embodiment of the present invention, as shown in fig. 20, the alternative display panel includes a plurality of light emitting devices arranged along a first direction, and the plurality of light emitting devices 200 arranged along the first direction share a main supporting column or an auxiliary supporting column.
In this embodiment, the optional display panel includes a plurality of light emitting devices arranged in the first direction, and the plurality of light emitting devices 200 arranged in the first direction share the main support column in the first support part.
The first direction may be selected to be perpendicular to the direction in which the first driving electrode 111 points to the second driving electrode 112, and for the plurality of light emitting devices 200 arranged along the first direction, the first driving electrode 111 is also arranged along the first direction, and the second driving electrode 112 is also arranged along the first direction. The main supporting column 310a of the first supporting portion extends along the first direction, and the plurality of light emitting devices 200 arranged along the first direction may share the main supporting column 310a of the first supporting portion. By adopting the scheme to design the supporting column, the design difficulty and the manufacturing difficulty of the supporting column can be reduced.
For example, referring to fig. 15, optionally, in a direction Y perpendicular to a plane of the first substrate, a size of the main supporting column 310a in the first supporting portion is greater than or equal to a distance between the first area 201 and the first substrate 100, and a size of the auxiliary supporting column 310b in the first supporting portion is less than or equal to a distance between the first area 201 and the first substrate 100; the size of the main supporting column 320a in the second supporting part is greater than or equal to the distance between the second region 202 and the first substrate 100, and the size of the auxiliary supporting column 320b in the second supporting part is less than or equal to the distance between the second region 202 and the first substrate 100. Optionally, in a direction Y perpendicular to the plane of the first substrate, the difference between the sizes of the main support column 310a and the auxiliary support column 310b in the first support part is equal to the difference between the sizes of the main support column 320a and the auxiliary support column 320b in the second support part.
In this embodiment, in the direction Y perpendicular to the plane of the first substrate, the size of the main support pillar 310a in the first support portion is greater than or equal to the distance between the first region 201 and the first substrate 100, so that when the light emitting device 200 is bonded to the first substrate 100, the main support function can be performed, and the height of the light emitting device 200 can be adjusted. The size of the auxiliary supporting column 310b in the first supporting portion is smaller than or equal to the distance between the first region 201 and the first substrate 100, so that when the height of the light-emitting device 200 is continuously reduced, an auxiliary supporting effect can be achieved, the distance between the light-emitting device 200 and the first substrate 100 is further limited, and the problems that the distance between the first region of the light-emitting device 200 and the first substrate 100 is too small and the like are avoided.
Similarly, the main supporting pillars 320a in the second supporting portion play a main supporting role, and on this basis, the auxiliary supporting pillars 320b in the second supporting portion play an auxiliary supporting role, and support the second region of the light emitting device 200 to be spaced from the first substrate 100. Finally, the first supporting portion and the second supporting portion are matched to support the light-emitting device, so that the light-emitting device is not inclined, the perpendicularity of light emission of the display panel is guaranteed, and the display effect is improved.
Optionally, in a direction perpendicular to a plane of the first substrate, a difference between sizes of the first supporting portion and the second supporting portion is equal to a distance between the first region and the second region in the light emitting device. It should be noted that the distance between the first region and the second region in the light emitting device is a vertical distance between a plane of the first region and a plane of the second region in the light emitting device in a direction perpendicular to the plane of the first substrate. The difference between the sizes of the first supporting portion and the second supporting portion is equal to the distance between the first region and the second region of the light emitting device, so that the first end surface of the first supporting portion is in contact with the first region of the light emitting device, and the first end surface of the second supporting portion is in contact with the second region of the light emitting device at the same time.
Based on the same inventive concept, embodiments of the present invention further provide a display device, which includes the display panel according to any of the above embodiments.
In this embodiment, one side of the light emitting device in the display panel, which faces the first substrate, includes a first region and a second region, and in a direction perpendicular to a plane where the first substrate is located, a distance between the first region and the first substrate is greater than a distance between the second region and the first substrate. The optional light-emitting device is a micro light-emitting diode, and for the micro light-emitting diode, the light-emitting structure body comprises an N pole and a P pole. Since the N-pole and the P-pole in the light emitting structure have different structures, the N-pole and the P-pole of the light emitting structure are not equal in height in actual production, and the distance between the N-pole and the array substrate in the light emitting structure is usually larger than the distance between the P-pole and the array substrate. Therefore, the first region of the light emitting device refers to a terminal region corresponding to an N-pole of the light emitting device, and the second region of the light emitting device refers to a terminal region corresponding to a P-pole of the light emitting device.
In this embodiment, a support structure is disposed between the first substrate and the light emitting device, in which a first support portion is supported between the first region and the first substrate, and a second support portion is supported between the second region and the first substrate. The distance between the first end face of the first supporting portion and the first substrate is larger than the distance between the first end face of the second supporting portion and the first substrate, so that the supporting effect can be achieved, when the light-emitting device is bonded with the first substrate, the situation that the first area and the second area are inclined cannot occur, and the light emitting verticality of the display panel is guaranteed.
In addition, according to the position design of the first supporting part and the second supporting part, the effect of preventing the short circuit of the liner layer or the driving electrode layer of the N pole and the P pole in the light-emitting device can be achieved, or the effect of preventing the overflow of the liner layer can be achieved.
The manufacturing process of the display panel is briefly described as follows: providing a first substrate, forming an electrode layer on the first substrate, forming a first supporting part and a second supporting part on the first substrate, and forming a liner layer on the driving electrode layer; and then the light-emitting device is connected to the first substrate in a transfer mode, the first substrate or the light-emitting device is heated, the lining layer is melted, the light-emitting device and the first substrate are in eutectic bonding, and the light-emitting device is fixedly connected to the first substrate. For the operation of forming the first supporting part and the second supporting part on the first substrate, after a supporting structure is optionally formed, the first supporting part and the second supporting part with different heights are formed in the supporting structure by adopting processes such as etching and the like.
In addition, in the case where the support portion is in contact with the light emitting structure. Before bonding, the sum of the heights of the first driving electrode, the first pad and the first light-emitting electrode is larger than or equal to the size of the first supporting part, and the sum of the heights of the second driving electrode, the second pad and the second light-emitting electrode is larger than or equal to the size of the second supporting part. During the bonding process, the cushion layer is melted and the height is lowered, so that the support structure can be in contact with the light emitting device to realize the support.
It can be understood that the difference between the sum of the heights of the driving electrode, the pad and the light-emitting electrode and the size of the corresponding support portion cannot be too large, which may cause the distance between the light-emitting device and the first substrate to be too small, and damage the light-emitting device or the circuit on the first substrate. The range of the difference between the sum of the heights of the optional driving electrode, the pad and the light-emitting electrode and the size of the corresponding support part is 1-3 microns.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (21)

1. A display panel, comprising:
a first substrate;
the light-emitting device is positioned on the first side of the first substrate, one side of the light-emitting device, which faces the first substrate, comprises a first area and a second area, and in the direction perpendicular to the plane of the first substrate, the distance between the first area and the first substrate is larger than the distance between the second area and the first substrate;
the supporting structure is positioned on the first side of the first substrate and supports the light-emitting device, the supporting structure comprises a first supporting portion and a second supporting portion, the first supporting portion is supported between the first substrate and the first area, the second supporting portion is supported between the first substrate and the second area, and in the direction perpendicular to the plane of the first substrate, the distance between a first end face of one side of the first supporting portion, which deviates from the first substrate, and the first substrate is larger than the distance between a first end face of one side of the second supporting portion, which deviates from the first substrate, and the first substrate;
the support structure is used for supporting the light-emitting device when the light-emitting device is bonded with the first substrate.
2. The display panel according to claim 1, wherein the first support portion and the second support portion are of an integral structure, a first end surface of the first support portion and a first end surface of the second support portion form a first step surface together, a first region and a second region of the light emitting device form a second step surface together, and the first step surface and the second step surface are fitted together.
3. The display panel according to claim 1, wherein the light-emitting device comprises a light-emitting structure body and a first light-emitting electrode and a second light-emitting electrode on a side of the light-emitting structure body facing the first substrate;
a side of the light emitting structure body facing the first substrate includes the first region and the second region.
4. The display panel according to claim 1, wherein the light-emitting device comprises a light-emitting structure body and a first light-emitting electrode and a second light-emitting electrode on a side of the light-emitting structure body facing the first substrate;
the first region is located on one side of the first light-emitting electrode facing the first substrate, and the second region is located on one side of the second light-emitting electrode facing the first substrate.
5. The display panel according to claim 1, wherein the light-emitting device comprises a light-emitting structure body and a first light-emitting electrode and a second light-emitting electrode on a side of the light-emitting structure body facing the first substrate;
the display panel further includes: the electrode layer comprises a first driving electrode and a second driving electrode, and the pad layer comprises a first pad and a second pad;
the first driving electrode is in electrical contact with the first light emitting electrode through the first pad, and the second driving electrode is in electrical contact with the second light emitting electrode through the second pad.
6. The display panel according to claim 5, wherein the first support part is located on a side of the first driving electrode facing the second driving electrode; and/or the presence of a gas in the gas,
the second support portion is located on one side of the second driving electrode facing the first driving electrode.
7. The display panel according to claim 5, wherein the first support portion is located on a side of the first driving electrode facing away from the second driving electrode; and/or the presence of a gas in the gas,
the second supporting part is positioned on one side of the second driving electrode, which is far away from the first driving electrode.
8. The display panel according to claim 5, wherein, in a direction parallel to a plane of the first substrate,
the first supporting part has one of the following structures: 1) The first supporting part is annular and surrounds the first driving electrode; 2) The first supporting part is in a semicircular ring shape and semi-surrounds the first driving electrode; 3) The first supporting part comprises a plurality of independent first supporting columns which are distributed around the first driving electrode;
the second support part has one of the following structures: 1) The second supporting part is annular and surrounds the second driving electrode; 2) The second supporting part is in a semicircular ring shape and semi-surrounds the second driving electrode; 3) The second supporting portion comprises a plurality of independent second supporting columns which are distributed around the second driving electrode.
9. The display panel according to claim 5, wherein, in a direction parallel to a plane of the first substrate,
the second support portion is disposed in contact with the second driving electrode, and/or the second support portion is disposed in contact with the second pad.
10. The display panel of claim 5, wherein, for the first support and the second support, at least one of the two supports comprises at least one main support column and at least one auxiliary support column; in the direction perpendicular to the plane of the first substrate,
the size of the auxiliary supporting column in the supporting part is smaller than that of the main supporting column.
11. The display panel according to claim 10, wherein in a direction parallel to a plane of the first substrate,
each supporting column in the first supporting part is positioned on the same side of the first driving electrode; and/or the presence of a gas in the gas,
and each support column in the second support part is positioned on the same side of the second driving electrode.
12. The display panel according to claim 10, wherein in a direction parallel to a plane of the first substrate,
the first supporting part is at least one of the following structures: 1) Main support columns in the first support part are uniformly distributed around the first driving electrode; 2) Auxiliary support columns in the first support part are uniformly distributed around the first driving electrode;
the structure of the second supporting part is at least one of the following conditions: 1) Main support columns in the second support part are uniformly distributed around the second driving electrode; 2) And the auxiliary support columns in the second support part are uniformly distributed around the second driving electrode.
13. The display panel according to claim 10, wherein the main support columns and the auxiliary support columns are spaced apart from each other in a direction parallel to a plane of the first substrate.
14. The display panel according to claim 10, wherein the main support column and the auxiliary support column in the support portion are of an integral structure.
15. The display panel of claim 10, wherein the orthographic projection of the main or auxiliary supporting pillars on the plane of the first substrate is a stripe extending along a first direction, wherein the first direction is parallel to one side edge of the driving electrode.
16. The display panel according to claim 15, wherein the display panel comprises a plurality of the light emitting devices arranged along the first direction, and the plurality of the light emitting devices arranged along the first direction share the main support column or the auxiliary support column.
17. The display panel according to claim 10, wherein in a direction perpendicular to a plane of the first substrate,
the size of a main support column in the first support part is larger than or equal to the distance between the first area and the first substrate, and the size of an auxiliary support column in the first support part is smaller than or equal to the distance between the first area and the first substrate;
the size of the main support column in the second support part is larger than or equal to the distance between the second region and the first substrate, and the size of the auxiliary support column in the second support part is smaller than or equal to the distance between the second region and the first substrate.
18. The display panel according to claim 17, wherein in a direction perpendicular to a plane of the first substrate,
the difference between the sizes of the main support column and the auxiliary support column in the first support part is equal to the difference between the sizes of the main support column and the auxiliary support column in the second support part.
19. The display panel according to claim 10, wherein the size of the main support columns in the second support portion is smaller than the size of the auxiliary support columns in the first support portion in a direction perpendicular to the plane of the first substrate.
20. The display panel according to claim 1, wherein in a direction perpendicular to a plane of the first substrate,
the difference between the sizes of the first supporting part and the second supporting part is equal to the distance between the first area and the second area in the light-emitting device.
21. A display device comprising the display panel according to any one of claims 1 to 20.
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