Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device. The display panel comprises a substrate, a driving array, a plurality of pixel units, a shading layer and an isolating layer. The driving array is positioned on one side of the substrate; the pixel units are located on the side, away from the substrate, of the driving array. The shading layer is located on the side, away from the substrate, of the driving array and comprises a shading part; the isolation layer is located on the side, away from the substrate, of the driving array and comprises an isolation part and a first part, and the isolation part surrounds the first part; the outer side wall of the isolation part is in contact with the shading part in the direction parallel to the plane where the substrate is located; the pixel units are located in the first part; in the direction perpendicular to the plane where the substrate is located, the minimum distance between the surface, away from the substrate, of the shading part and the substrate is smaller than the minimum distance between the surface, away from the substrate, of the isolation part and the substrate. According to the embodiment of the invention, the problem of low light extraction rate caused by ink adsorption of an LED surface microstructure under a capillary effect in an ink printing process is solved.

Description

[Technical field]

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

[0002] Micro LED (Micro Light Emitting Diode Display) is widely used due to its advantages such as high brightness, high contrast, low power consumption and long service life. In some MicroLED products, black shading material is needed to shade the light-emitting device and achieve the effect that the light-emitting surface except the light outlet is all black. In the process of manufacturing these products, in order to achieve a good shading effect, the shading layer is generally prepared by inkjet printing process. However, in the process of inkjet printing, since the surface of the light-emitting device has a microstructure, under the action of capillary effect, the microstructure on the surface of the light-emitting device will adsorb the ink, causing the ink to climb along the side wall of the light-emitting device to the surface of the light-emitting device, thereby affecting the light output rate of the light-emitting device. [Summary of the invention]

[0003] In view of this, the embodiments of the present application provide a display panel and a display device to improve the problem of low light output caused by the adsorption of ink by the LED surface microstructure under the capillary effect during the ink printing process.

[0004] In the first aspect, an embodiment of the present application provides a display panel, comprising: a substrate, a driving array, a plurality of pixel units, a light shielding layer, and an isolation layer. The driving array is located on one side of the substrate; the pixel units are located on the side of the driving array away from the substrate; the light shielding layer is located on the side of the driving array away from the substrate, and the light shielding layer includes a light shielding portion; the isolation layer is located on the side of the driving array away from the substrate, and the isolation layer includes an isolation portion and a first portion, and the isolation portion surrounds the first portion; along a direction parallel to the plane where the substrate is located, the outer wall of the isolation portion is in contact with the light shielding portion; the pixel units are located in the first portion; along a direction perpendicular to the plane where the substrate is located, the minimum distance between the surface of the light shielding portion away from the substrate and the substrate is a first distance, and the minimum distance between the surface of the isolation portion away from the substrate and the substrate is a second distance, and the first distance is less than the second distance.

[0005] In an implementation manner of the first aspect, the orthographic projection of the isolation portion on the substrate is a ring shape.

[0006] In an implementation of the first aspect, the multiple pixel units include a first pixel unit and a second pixel unit; the isolation layer includes a plurality of isolation parts, the plurality of isolation parts include a first isolation part and a second isolation part; the isolation layer also includes a plurality of first parts, the plurality of first parts include a first connecting part and a second connecting part, the first connecting part is connected to the first isolation part, and the first isolation part and the first connecting part form a first structure, the first structure wraps the first pixel unit, the second connecting part is connected to the second isolation part, and the second isolation part and the second connecting part form a second structure, the second structure wraps the second pixel unit; along a direction parallel to the plane where the substrate is located, the first structure and the second structure include the shading part.

[0007] In an implementation manner of the first aspect, an orthographic projection of the first structure on the substrate and an orthographic projection of the second structure on the substrate have different areas.

[0008] In an implementation of the first aspect, the multiple pixel units include a first pixel unit and a second pixel unit; the isolation layer includes a plurality of isolation parts, the plurality of isolation parts include a first isolation part and a second isolation part; the isolation layer also includes a plurality of first parts, the plurality of first parts include a first opening and a second opening; the first isolation part surrounds the first opening, and the second isolation part surrounds the second opening; the first pixel unit is located at the first opening, and the second pixel unit is located at the second opening.

[0009] In an implementation of the first aspect, a distance between the first isolation portion and the first pixel unit that is away from a side wall of the light shielding portion is greater than zero, and a distance between the second isolation portion and the second pixel unit that is away from a side wall of the light shielding portion is greater than zero.

[0010] In an implementation of the first aspect, the multiple pixel units include a first pixel unit and a second pixel unit, and the color of the first pixel unit is different from the color of the second pixel unit; the isolation layer includes a plurality of isolation parts, and the plurality of isolation parts include a first isolation part and a second isolation part; the isolation layer also includes a plurality of first parts, and the plurality of first parts include a first connecting part and a first opening, the first connecting part is connected to the first isolation part, and the first isolation part and the first connecting part constitute a first structure, the first structure wraps the first pixel unit, and the second pixel unit is located at the first opening.

[0011] In an implementation manner of the first aspect, along a direction parallel to the plane where the substrate is located, the light shielding portion is included between the first structure and the second isolation portion.

[0012] In an implementation manner of the first aspect, the first pixel unit is a green pixel unit or a blue pixel unit, and the second pixel unit is a red pixel unit.

[0013] In an implementation of the first aspect, along a direction perpendicular to the plane where the substrate is located, the minimum distance between the surface of the first isolation portion facing away from the substrate and the substrate is a first sub-distance, the minimum distance between the surface of the second isolation portion facing away from the substrate and the substrate is a second sub-distance, and the first sub-distance is not equal to the second sub-distance.

[0014] In an implementation of the first aspect, a shape of an orthographic projection of the first isolation portion on the substrate is different from a shape of an orthographic projection of the second isolation portion on the substrate; or, a shape of an orthographic projection of the first isolation portion on the substrate is similar to but not identical to a shape of an orthographic projection of the second isolation portion on the substrate.

[0015] In an implementation of the first aspect, the multiple pixel units include a first pixel unit, a second pixel unit and a third pixel unit, the color of the first pixel unit, the color of the second pixel unit and the color of the third pixel unit are different, and the first pixel unit, the second pixel unit and the third pixel unit are located in a first pixel group; the isolation layer includes a plurality of isolation parts, and the plurality of isolation parts include a third isolation part; the isolation layer also includes a plurality of first parts, and the plurality of first parts include a third connecting part, and the third connecting part is connected to the third isolation part, and the third connecting part and the third isolation part constitute a third structure, and the third structure wraps the first pixel group; and along a direction parallel to the plane where the substrate is located, the third connecting part fills the space between adjacent pixel units in the same first pixel group.

[0016] In an implementation of the first aspect, the multiple pixel units include a first pixel unit, a second pixel unit, and a third pixel unit, the color of the first pixel unit, the color of the second pixel unit, and the color of the third pixel unit are different, and the first pixel unit, the second pixel unit, and the third pixel unit are located in a second pixel group; the isolation layer includes a plurality of isolation parts, the plurality of isolation parts include a third isolation part, the isolation layer includes a plurality of first parts, the plurality of first parts include a third opening, the third isolation part surrounds the third opening, and the second pixel group is located in the third opening.

[0017] In a second aspect, the present application provides a display device, comprising the display panel of the first aspect or any implementation of the first aspect.

[0018] In the embodiment of the present application, the isolating portion isolates the light shielding portion from the pixel unit, so that the light shielding portion does not contact the pixel unit, thereby preventing the microstructure on the surface of the pixel unit from generating a capillary adsorption force on the ink. The first distance is smaller than the second distance, which can help prevent the ink from invading the light emitting surface of the pixel unit during inkjet printing, and ultimately help improve the display effect of the pixel unit.

Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of a display panel provided in an embodiment of the present application;

[0021] Figure 2 Provided in the embodiments of this application Figure 1 A cross-sectional view of AA in FIG.

[0022] Figure 3 A schematic diagram of a display panel provided in an embodiment of the present application;

[0023] Figure 4 Provided in the embodiments of this application Figure 2 A cross-section of the BB in ;

[0024] Figure 5 A partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0025] Figure 6 A partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0026] Figure 7 A partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0027] Figure 8 A partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0028] Fig. 9 A partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0029] Fig.10 A partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0030] Fig.11 A partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0031] Fig.12 A partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0032] Fig.13 A partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0033] Fig.14 A partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0034] Fig.15 A partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0035] Fig.16 A schematic diagram of a display device provided in an embodiment of the present application.

[0036] Description of symbols

[0037] 100, display panel; 101, substrate; 102, pixel unit; 102a, first pixel unit; 102b, second pixel unit; 102c, third pixel unit; 103, debonding; 110, drive array; 111, first metal layer; 112, first organic layer; 1121, first organic part; 1122, second organic part; 120, shading layer; 121, shading part; 130, isolation layer; 130a, first structure; 130b, second structure; 130c, third structure; 131, isolation part; 131a, first isolation part; 131b, second isolation part; 132, first part; 200, display device. [Specific implementation method]

[0038] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0039] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0040] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0041] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0042] In the description of this specification, it is necessary to understand that the words such as "substantially", "approximately", "approximately", "about", "roughly", "substantially" and the like described in the claims and embodiments of the present application refer to what can be generally recognized within a reasonable process operation range or tolerance range, rather than an exact value.

[0043] It should be understood that although the terms first, second, third, etc. may be used to describe regions, etc. in the embodiments of the present application, these regions, etc. should not be limited to these terms. These terms are only used to distinguish regions, etc. from each other. For example, without departing from the scope of the embodiments of the present application, the first region may also be referred to as the second region, and similarly, the second region may also be referred to as the first region.

[0044] During the production of Micro LEDs, the light shielding layer can be prepared before or after the LEDs are transferred in batches. The embodiment of the present application is an improvement based on the example that the light shielding layer is at least partially prepared after the LEDs are transferred in batches.

[0045] The inventors have found that in order to increase the light output rate of the light-emitting device, it is necessary to make a microstructure on the surface of the light-emitting device. When inkjet printing is performed after the LED is batch-transferred, in order to ensure the light-shielding effect, the ink needs to contact the side wall of the LED. When the ink contacts the side wall of the LED, the microstructure on the surface of the LED will siphon the ink under the capillary effect, so that the ink climbs along the side wall of the LED to the upper surface of the LED, so that the LED surface is adsorbed with ink, and the ink has a light-absorbing effect, which leads to a decrease in the light output rate of the LED.

[0046] The applicant in this case has provided a solution to the above-mentioned problem through careful and in-depth research.

[0047] Combination Figure 1 and Figure 2A display panel 100 includes: a substrate 101, a driving array 110, a plurality of pixel units 102, a light shielding layer 120 and an isolation layer 130. The driving array 110 is located on one side of the substrate. In one possible implementation, the driving array 110 includes a plurality of pixel driving circuits, and the pixel driving circuits are used to be electrically connected to corresponding pixel units 102 to provide driving signals, such as driving current signals, to the pixel units 102 electrically connected thereto. The pixel units 102 are located on a side of the driving array 110 away from the substrate 101. The pixel units 102 are electrically connected to the corresponding pixel driving circuits. In one possible implementation, the pixel units 102 correspond one-to-one to the pixel driving circuits, and the pixel driving circuits are electrically connected to the corresponding pixel units 102.

[0048] like Figure 2 As shown, the light shielding layer 120 is located on the side of the driving array 110 away from the substrate 101, and the light shielding layer 120 includes a light shielding portion 121. The light shielding layer 120 can be a black light shielding layer. The functions of the light shielding layer 120 include two aspects. On the one hand, it limits the external light from entering the display panel 100, and prevents the metal wires of the pixel driving circuit in the display panel 100 from reflecting the external light and affecting the display effect; on the other hand, it prevents the pixel units 102 or pixel groups of different colors from mixing light and affecting the display effect when displaying. Among them, in a possible implementation, the pixel unit 102 may refer to a single pixel, for example, the pixel unit 102 is an R / G / B pixel unit; the pixel group may refer to a group of pixels including RGB pixel units.

[0049] like Figure 2 As shown, the isolation layer 130 is located on the side of the driving array away from the substrate, and the isolation layer 130 includes an isolation portion 131 and a first portion 132, and the isolation portion 131 surrounds the first portion 132. In a possible implementation, the first portion 132 is located in the middle of the isolation portion 132, and along the direction parallel to the plane where the substrate 101 is located, the first portion 132 is located on the side of the isolation portion 132 away from the light shielding portion 121. Along the direction parallel to the plane where the substrate 101 is located, the outer wall of the isolation portion 131 is in contact with the light shielding portion 121. The isolation portion 131 surrounds the pixel unit 102. The pixel unit 102 is located in the first portion. That is, the isolation portion 131 isolates the light shielding portion 121 from the pixel unit 102. Along the direction Z perpendicular to the plane where the substrate 101 is located, the surface of the light shielding portion 121 facing away from the substrate is the first surface S1, the surface of the isolation portion 131 facing away from the substrate 101 is the second surface S2, the minimum distance between the first surface S1 and the substrate 101 is the first distance d1, the minimum distance between the second surface S2 and the substrate 101 is the second distance d2, and the first distance d1 is less than the second distance d2. In a possible implementation, the direction parallel to the plane where the substrate 101 is located can be the arrangement direction of the pixel units 102.

[0050] In this embodiment, the isolating portion 131 isolates the light shielding portion 121 from the pixel unit 102, so that the light shielding portion 121 does not contact the pixel unit 102, thereby preventing the microstructure on the surface of the pixel unit 102 from generating a capillary adsorption force on the ink. The first distance d1 is smaller than the second distance d2, which can help prevent the ink from invading the light emitting surface of the pixel unit 102 during inkjet printing, and ultimately help improve the display effect of the pixel unit 102.

[0051] like Figure 1 or Figure 3 As shown, in one embodiment of the present application, the orthographic projection of the isolation portion 131 on the substrate 101 is a ring.

[0052] The orthographic projection of the isolation portion 131 on the substrate 101 refers to the projection of the isolation portion 131 along a direction perpendicular to the plane of the substrate 101. The shape of the orthographic projection of the isolation portion 131 on the substrate 101 can be a circular ring or a polygonal ring, such as a rectangular ring, and the rectangular ring can be a square ring or a rectangular ring.

[0053] In this embodiment, the isolation portion 131 has a circular projection on the substrate 101, which means that the isolation portion 131 can completely isolate the shading portion 121 and the pixel unit 102 at 360 degrees, thereby preventing the microstructure of the light-emitting surface of the pixel unit 102 from generating capillary adsorption force on the ink during the inkjet printing process.

[0054] like Figure 2 As shown, in one embodiment of the present application, the plurality of pixel units 102 include a first pixel unit 102a and a second pixel unit 102b. The isolation layer 130 includes a plurality of isolation parts 131, and the plurality of isolation parts 131 include a first isolation part 131a and a second isolation part 131b. The isolation layer 130 also includes a plurality of first parts 132, and the plurality of first parts 132 include a first connecting part 132a and a second connecting part 132b, the first connecting part 132a is connected to the first isolation part 131a, and the first isolation part 131a and the first connecting part 132a form a first structure 130a, the first structure 130a wraps the first pixel unit 102a, the second connecting part 132b is connected to the second isolation part 131b, and the second isolation part 131b and the second connecting part 132b form a second structure 130b, and the second structure 130b wraps the second pixel unit 102b. Along a direction parallel to the plane where the substrate 101 is located, a light shielding portion 121 is included between the first structure 130 a and the second structure 130 b .

[0055] In the present embodiment, the first isolating portion 131a and the first connecting portion 132a may be an integral structure, and the two are manufactured in one process. The second connecting portion 132b and the second isolating portion 131b may be an integral structure, and the two are manufactured in one process. The first structure 130a wraps the first pixel unit 102a so that the first pixel unit 102a is isolated from the shading portion 102 in all directions, thereby better protecting the pixel unit, so that the microstructure of the surface of the pixel unit 102 facing away from the substrate 101 does not have a capillary effect on the ink. Along the direction parallel to the plane where the substrate 101 is located, the shading portion 121 is included between the first structure 130a and the second structure 130b, which means that the first structure 130a and the second structure 130b each wrap a pixel unit, thereby better ensuring that light mixing is not likely to occur between pixel units of different colors.

[0056] In a possible implementation of this embodiment, the isolation layer 130 is made of a colorless and transparent material, so as to ensure the light emitting effect of the pixel unit 102 .

[0057] In a possible implementation of this embodiment, any two pixel units or any two pixel units of different colors among the plurality of pixel units 102 of the display panel 100, one of which is a first pixel unit and the other of which is a second pixel unit. That is, each of all the pixel units in the display panel 100 is wrapped by the structure consisting of the isolation portion and the first portion.

[0058] In a possible implementation of this embodiment, the color of the first pixel unit 102a is different from the color of the second pixel unit 102b. The orthographic projection of the first structure 130a on the substrate 101 and the orthographic projection of the second structure 130b on the substrate 101 have different areas.

[0059] In this implementation, the area of ​​the orthographic projection of the first structure 130a on the substrate is different from the area of ​​the orthographic projection of the second structure 130b on the substrate 101, which can achieve differentiation of pixel units of different colors, thereby facilitating differentiated isolation from the shading portion 121 based on the characteristics of the pixel units 102 of different colors, thereby ensuring the final display effect.

[0060] For example, in a possible implementation, the color of the first pixel unit 102a is red, the color of the second pixel unit 102b is green, and the area of ​​the orthographic projection of the first structure 130a on the substrate 101 is larger than the area of ​​the orthographic projection of the second structure 130b on the substrate 101. Thus, the red pixel unit has a larger light emission angle to compensate for the visual deviation caused by the red light characteristic of the red pixel unit.

[0061] In a possible implementation of this embodiment, the color of the first pixel unit 102a is the same as the color of the second pixel unit 102b, and the orthographic projection of the first structure 130a on the substrate 101 and the orthographic projection of the second structure 130b on the substrate 101 have different areas.

[0062] In this implementation, pixel unit structures wrapped in the same color are processed differently, so that different light emitting angles can be achieved in the display effect, thereby protecting the privacy of the user. For example, when privacy needs to be protected, a small light emitting angle is used for display, and when privacy does not need to be protected, a large light emitting angle is used for display.

[0063] In a possible implementation of this embodiment, the orthographic projection of the first structure 130 a on the substrate 101 and the orthographic projection of the second structure 130 b on the substrate 101 have the same shape and the same area.

[0064] In this implementation, the first structure 130a is consistent with the second structure 130b, so that the structure of the wrapped pixel unit composed of the isolation part and the first part in the display panel 100 can be uniform, thereby reducing the complexity of the production process and helping to reduce production costs.

[0065] Combination Figure 3 and Figure 4 In one embodiment of the present application, the plurality of pixel units 102 include a first pixel unit 102a and a second pixel unit 102b. The isolation layer 130 includes a plurality of isolation portions 131, wherein the plurality of isolation portions 131 include a first isolation portion 131a and a second isolation portion 131b. The isolation layer 130 also includes a plurality of first portions 132, wherein the plurality of first portions 132 include a first opening 132a and a second opening 132b. The first isolation portion 131a surrounds the first opening 132a, and the second isolation portion 131b surrounds the second opening 132b. The first pixel unit 102a is located at the first opening 132a, and the second pixel unit 102b is located at the second opening 132b.

[0066] In this embodiment, the first pixel unit 102a is located at the first opening 132a, and the second pixel unit 102b is located at the second opening 132b, which can ensure that the light-emitting surfaces of the first pixel unit 102a and the second pixel unit 102b are not shielded by the isolation layer, thereby ensuring a better light-emitting effect.

[0067] In an implementation of this embodiment, any two pixel units 102 or any two pixel units 102 of different colors among the plurality of pixel units 102 in the display panel 100, one is a first pixel unit 102a, and the other is a second pixel unit 102b.

[0068] In this implementation, each pixel unit 102 of all pixel units 102 of the display panel 100 is isolated by the isolation portion and is located in the opening inside the isolation portion, thereby ensuring that each pixel unit 102 is isolated from the light shielding portion 121 and its light emitting surface is not shielded by the isolation layer, thereby ensuring the light emitting efficiency and ultimately the light emitting effect.

[0069] like Figure 4 As shown, in a possible implementation of this embodiment, along a direction parallel to the plane where the substrate 101 is located, a light shielding portion 121 is included between the first isolation portion 131 a and the second isolation portion 131 b .

[0070] In this implementation, a light shielding portion 121 is included between the first isolation portion 131a and the second isolation portion 131b, so that the light shielding portion 121 is included between the first pixel unit 102a and the second pixel unit 102b, thereby preventing light mixing between the first pixel unit 102a and the second pixel unit 102b. For example, the first pixel unit 102a is adjacent to the second pixel unit 102b, and the light shielding portion 121 is included between the adjacent pixel units, which can effectively ensure the light output effect of a single pixel unit 102 and effectively reduce the probability of light mixing between the two.

[0071] like Figure 4 As shown, in a possible implementation of this embodiment, the distance between the first isolation portion 131a and the side wall of the shading portion 121 and the first pixel unit 102a is greater than zero, and the distance between the second isolation portion 131b and the side wall of the shading portion 121 and the second pixel unit 102b is greater than zero.

[0072] In this implementation, the distance between the first isolation portion 131a and the first pixel unit 102a is greater than zero, and the distance between the second isolation portion 131b and the second pixel unit 102b is also greater than zero, thereby avoiding direct contact between the first pixel unit 102a and the first isolation portion 131a, and direct contact between the second pixel unit 102b and the second isolation portion 131b, thereby facilitating the light output effect of the first pixel unit 102a and the second pixel unit 102b.

[0073] like Figure 5 As shown, in a possible implementation of this embodiment, along a direction parallel to the plane where the substrate 101 is located, the first pixel unit 102a is adjacent to the second pixel unit 102b, and the first isolation portion 131a is connected to the second isolation portion 131b.

[0074] In this implementation, due to process limitations, the first isolation portion 131 a is directly connected to the second isolation portion 131 b , which can reduce the requirements on the accuracy of the mask in the production process, thereby helping to reduce costs.

[0075] like Figure 6 As shown, in one embodiment of the present application, the plurality of pixel units 102 include a first pixel unit 102a and a second pixel unit 102b, and the color of the first pixel unit 102a is different from the color of the second pixel unit. The isolation layer 130 includes a plurality of isolation parts 131, and the plurality of isolation parts 131 include a first isolation part 131a and a second isolation part 131b. The isolation layer 130 also includes a plurality of first parts 132, and the plurality of first parts 132 include a first connecting part 132a and a first opening 132b, and the first connecting part 132a is connected to the first isolation part 131a, and the first isolation part 131a and the first connecting part 132a constitute a first structure 130a, and the first structure 130a wraps the first pixel unit 102a, and the second pixel unit 102b is located at the first opening 132a.

[0076] In the embodiment of the present application, the first pixel unit 102a is wrapped by the first structure 130a, and the second pixel unit 102a is located at the first opening 132a and surrounded by the second isolation portion 131b. Therefore, it can be achieved that: the first pixel unit 102a is isolated from the light shielding portion 121 in all directions. The light-emitting surface of the second pixel unit 102b is not blocked by the isolation layer, so that the second pixel unit 102b has a good light-emitting rate.

[0077] like Figure 6 As shown, in a possible implementation of this embodiment, along a direction parallel to the plane where the substrate 101 is located, a light shielding portion 121 is included between the first structure 130a and the second isolation portion 132b.

[0078] In this implementation, the light shielding portion 121 between the first structure 130a and the second isolation portion 132b can effectively reduce light mixing between the first pixel unit 102a and the second pixel unit 102b, thereby ensuring the display effect.

[0079] like Figure 7 As shown, in a possible implementation of this embodiment, the first pixel unit 102a is adjacent to the second pixel unit 102b, and the first structure 130a is connected to the second isolation portion 132b along a direction parallel to the plane where the substrate 101 is located. That is, along a direction parallel to the plane where the substrate 101 is located, no light shielding portion is included between the first structure 130a and the second isolation portion 132.

[0080] In this implementation, due to process limitations, no light shielding portion is provided between the first structure 130a and the second isolation portion 132b, which can reduce the precision requirements on the mask in the production process, thereby helping to reduce costs.

[0081] In a possible implementation of this embodiment, the first pixel unit 102a is a green pixel unit or a blue pixel unit, and the second pixel unit 102b is a red pixel unit.

[0082] In this implementation, the green / blue pixel unit is wrapped by the structure composed of the first portion 132 and the isolation portion 131, and the light-emitting surface of the red pixel unit is not blocked by the isolation layer 130, thereby ensuring the light-emitting rate of the red pixel unit.

[0083] like Figure 8 As shown, in a possible implementation of this embodiment, the plurality of pixel units 102 further include a third pixel unit 102c. Along a direction parallel to the plane where the substrate 101 is located, the third pixel unit 102c is adjacent to the first pixel unit 102a, the first structure 130a further wraps the third pixel unit 102c, and the first pixel unit 102a and the third pixel unit 102c are filled with an isolation layer.

[0084] For example, one of the first pixel unit 102a and the third pixel unit 102c is a green pixel unit and the other is a blue pixel unit, and the second pixel unit 102b is a red pixel unit.

[0085] like Fig. 9 or Fig.10 As shown, in one embodiment of the present application, along the direction perpendicular to the plane where the substrate 101 is located, the minimum distance between the surface of the first isolation portion 131a facing away from the substrate 101 and the substrate 101 is a first sub-distance d21, and the minimum distance between the surface of the second isolation portion 131b facing away from the substrate 101 and the substrate 101 is a second sub-distance d22, and the first sub-distance d21 and the second sub-distance d22 are not equal. Fig. 9 The first portion 131 is a connecting portion. Fig.10 The first portion 131 is an opening.

[0086] In this embodiment, the first sub-distance d21 is not equal to the second sub-distance d22, so that there is a difference in the light extraction rate of the first pixel unit 102a and the second pixel unit 102b. For example, the first sub-distance d21 is greater than the second sub-distance d22, and the influence of the first isolation portion 131a on the light extraction is greater than the influence of the second isolation portion 131b on the light extraction. Taking the first pixel unit 102a being wrapped by the first structure 130a and the second pixel unit 102b being wrapped by the second structure 130b as an example, the first sub-distance d21 is greater than the second sub-distance d22, which means that the thickness of the first structure 130a is greater than the thickness of the second structure 130b, and the absorption of light by the first structure 130a is greater than the absorption of the second structure 130b. Therefore, the light extraction rate of the first pixel unit 102a is less than the light extraction rate of the second pixel unit 102b.

[0087] In one embodiment of the present application, the shape of the orthographic projection of the first isolation portion 131a on the substrate 101 is different from the shape of the orthographic projection of the second isolation portion 131b on the substrate 101. Alternatively, the shape of the orthographic projection of the first isolation portion 131a on the substrate is similar to the shape of the orthographic projection of the second isolation portion 131b on the substrate 101 but is not congruent.

[0088] In this embodiment, there are differences between the first isolation portion 131 a and the second isolation portion 132 . Such differences can achieve differences in light emission angles between pixel units, thereby facilitating a better display effect.

[0089] For example, in a possible implementation of this embodiment, the color of the first pixel unit 102 a is the same as the color of the second pixel unit 102 b .

[0090] In this implementation, differences in the isolation portions surrounding the pixel units of the same color are achieved, thereby achieving differentiation in the light emission angles of the pixel units of the same color, which is beneficial for privacy protection during the display process.

[0091] For another example, in a possible implementation of this embodiment, the color of the first pixel unit 102a is different from the color of the second pixel unit 102b. For example, the color of the first pixel unit 102a is green or blue, and the color of the second pixel unit 102b is red. The area of ​​the orthographic projection of the first opening 132a on the substrate 101 is smaller than the area of ​​the orthographic projection of the second opening 132b on the substrate 101.

[0092] In this implementation, the differential design of the first isolation portion 131a and the second isolation portion 131b can achieve the differentiation of the light emission angle between the first pixel unit 102a and the second pixel unit 102b, thereby taking into account the characteristics of the pixel color and ensuring the display effect.

[0093] like Figure 1 or Figure 3 As shown, in one embodiment of the present application, the shape of the orthographic projection of the first isolation portion 131 a on the substrate 101 is the same as the shape of the orthographic projection of the second isolation portion 131 b on the substrate 101 and the areas are equal.

[0094] In this embodiment, the shape of the orthographic projection of the first isolation portion 131a on the substrate 101 is the same as the shape and area of ​​the orthographic projection of the second isolation portion 131b on the substrate 101, which can maintain the uniformity of the isolation portion, reduce the difficulty of mask production, and thus reduce the mask cost and ultimately reduce the cost of the product.

[0095] like Fig.11As shown, in one embodiment of the present application, a plurality of pixel units 102 include a first pixel unit 102a, a second pixel unit 102b and a third pixel unit 102c, the color of the first pixel unit 102a, the color of the second pixel unit 102b and the color of the third pixel unit 102c are different, and the first pixel unit 102a, the second pixel unit 102b and the third pixel unit 102c are located in a first pixel group. The isolation layer 130 includes a plurality of isolation parts 131, and the plurality of isolation parts 131 include a third isolation part 131c. The isolation layer 130 also includes a plurality of first parts 132, and the plurality of first parts 132 include a third connection part 132c, and the third connection part 132c is connected to the third isolation part 131c, and the third connection part 132c and the third isolation part 131c constitute a third structure 130c, and the third structure 130c wraps the first pixel group. And along the direction parallel to the plane where the substrate is located, the third connection part 132c fills the space between adjacent pixel units in the same first pixel group.

[0096] In this embodiment, the third structure 130c wraps the entire pixel group. Due to process limitations, the third structure wraps the entire first pixel group, which reduces the precision requirements for the mask, thereby helping to reduce costs.

[0097] In a possible implementation manner, a first pixel group includes at least one red pixel unit, one blue pixel unit, and one green pixel unit.

[0098] like Fig.12 As shown, in one embodiment of the present application, the plurality of pixel units 102 include a first pixel unit 102a, a second pixel unit 102b, and a third pixel unit 102c. The colors of the first pixel unit 102a, the second pixel unit 102b, and the third pixel unit 102c are different from each other. The first pixel unit 102a, the second pixel unit 102b, and the third pixel unit 102c are located in the second pixel group. The isolation layer 130 includes a plurality of isolation portions 131, the plurality of isolation portions 131 include a third isolation portion 131c, the isolation layer 130 includes a plurality of first portions 132, the plurality of first portions 132 include a third opening 132c, the third isolation portion 131c surrounds the third opening 132c, and the second pixel group is located in the third opening 132c.

[0099] In this embodiment, the third isolation portion 131c surrounds the entire second pixel group, and the light-emitting surface of each pixel unit in the second pixel group is not necessarily blocked by the isolation layer, so that each pixel unit in the second pixel group has good light-emitting efficiency.

[0100] like Fig.12As shown, the display panel 100 includes a second pixel group a and a second pixel group b. The second pixel group a is adjacent to the second pixel group b. Along a direction parallel to the plane where the substrate 101 is located, the second pixel group a is adjacent to the second pixel group b. A light shielding portion 121 is included between the second pixel group a and the second pixel group b.

[0101] In this embodiment, a light shielding portion 121 is included between the second pixel group a and the second pixel group b, which can help prevent light mixing between the second pixel groups.

[0102] like Figure 5 , Figure 7 , Figure 8 or Fig.11 As shown, in one embodiment of the present application, the plurality of pixel units 102 include a first pixel unit 102a, a second pixel unit 102b and a third pixel unit 102c, the color of the first pixel unit 102a, the color of the second pixel unit 102b and the color of the third pixel unit 102c are different, and the first pixel unit 102a, the second pixel unit 102b and the third pixel unit 102c are located in a first pixel group. The display panel 100 includes a first pixel group a and a first pixel group b, the first pixel group a is adjacent to the first pixel group b, along a direction parallel to the plane where the substrate 101 is located, the first pixel group a is adjacent to the first pixel group b, and a light shielding portion 121 is included between the first pixel group a and the first pixel group b.

[0103] In this embodiment, a light shielding portion 121 is included between the first pixel group a and the first pixel group b, which can help prevent light mixing between the first pixel groups.

[0104] like Fig.13 As shown, in one embodiment of the present application, the minimum distance between the surface of the pixel unit 102 facing away from the substrate 101 and the substrate 101 is a third distance d3, the third distance d3 is greater than or equal to the first distance d1, and the third distance d3 is less than the second distance d2.

[0105] In this embodiment, the third distance d3 is greater than or equal to the first distance d1, and the third distance d3 is less than the second distance d2, which means that the height of the isolation portion along the direction perpendicular to the plane of the substrate 101 is higher than the height of the pixel unit, thereby better protecting the pixel unit.

[0106] like Fig.13 As shown, in one embodiment of the present application, the first portion 132 is an opening, the isolation portion 131 surrounds the opening, and the minimum distance between the surface of the pixel unit 102 facing away from the substrate 101 and the substrate 101 is a third distance d3, and the third distance d3 is greater than or equal to the second distance d2.

[0107] The third distance d3 is greater than or equal to the second distance d2. On the one hand, it can increase the light output angle. On the other hand, in the production process of microLED, if an isolation layer is formed first and then the LEDs are transferred in batches, the isolation layer can be prevented from being squeezed by the transfer platform during the transfer process, thereby facilitating the stability of the LED electrical connection during the batch transfer process.

[0108] like Fig.14 As shown, in an implementation of this embodiment, the display panel 100 further includes a debonding adhesive 103 , and the debonding adhesive 103 is located on a surface of the pixel unit 102 facing away from the substrate 101 .

[0109] In this implementation, the adhesive remover 103 can further prevent the ink from adhering to the light emitting surface of the pixel unit, thereby ensuring the light emitting effect of the pixel unit.

[0110] like Fig.15 As shown, in one embodiment of the present application, the driving array 110 includes a first metal layer 111 and a first organic layer 112, the first metal layer 111 is located on one side of the substrate 101, and the first organic layer 112 is located on the side of the first metal layer 111 away from the substrate 101. The first metal layer 111 includes a first metal portion 1111, and the first organic layer 112 includes a first organic portion 1121 and a second organic portion 1122. Along a direction Z perpendicular to the plane where the substrate 101 is located, the first organic portion 1121 does not overlap with the first metal portion 1111, the second organic portion 1122 at least partially overlaps with the first metal portion 1111, and the second organic portion 1122 at least partially overlaps with the pixel unit 102. Along the direction Z perpendicular to the plane of the substrate 101, the minimum distance between the surface of the first organic part 1121 facing away from the substrate 101 and the substrate is a fourth distance d4, and the minimum distance between the surface of the second organic part 1122 facing away from the substrate 101 and the substrate is a fifth distance d5, and the fifth distance d5 is greater than the fourth distance d4.

[0111] In this embodiment, the pixel unit 102 is located on the side of the first metal portion 1111 facing away from the substrate 101. The fifth distance d5 is greater than the fourth distance d4, which means that the height of the organic layer below the pixel unit 102 is raised, thereby facilitating the increase of the overall height of the pixel unit 102, thereby facilitating the increase of the light emission angle of the pixel unit 102.

[0112] like Fig.15 As shown, in a possible implementation of this embodiment, along a direction Z perpendicular to the plane where the substrate 101 is located, the first metal portion 1111 covers the pixel unit 102 .

[0113] In this implementation, the first metal portion 1111 covers the pixel unit 102 to ensure that the device characteristics at the bottom are not affected during the laser bonding and repair process.

[0114] In a possible implementation manner, the first metal portion 1111 is electrically insulated from the pixel circuit.

[0115] In one embodiment of the present application, the minimum distance between the surface of the pixel unit 102 facing away from the substrate 101 and the substrate 101 is a third distance d3, the third distance d3 is greater than the first distance d1, and d3-d1≥0.5h, where h is the height of the pixel unit 102 in a direction perpendicular to the plane of the substrate 101.

[0116] In this embodiment, d3-d1≥0.5h, which means that the maximum height that the ink can reach is less than 0.5h, and this height difference can help reduce the capillary effect of the microstructure of the light-emitting surface of the pixel unit 102 on the ink. Therefore, even if the isolation of the isolation part fails, the height difference can well prevent the capillary effect of the microstructure of the light-emitting surface of the pixel unit 102 on the ink, and finally ensure the display effect of the pixel unit 102.

[0117] like Fig.16 As shown, an embodiment of the present application further provides a display device 200, comprising the display panel 100 provided by any of the aforementioned embodiments.

[0118] In the embodiment of the present application, the display device may be a computer, a mobile phone, a pad, a terminal, a smart wearable device, etc. The display device provided in the embodiment of the present application adopts the display panel of the aforementioned embodiment, which can effectively prevent the ink from causing adverse effects on the light-emitting surface of the pixel unit 102 during the inkjet printing process, and ultimately ensure the display effect of the display panel.

[0119] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: include: substrate; A driving array, located on one side of the substrate; A plurality of pixel units, wherein the pixel units are located on a side of the driving array away from the substrate; a light shielding layer, located on a side of the driving array away from the substrate, the light shielding layer comprising a light shielding portion; An isolation layer, located on a side of the driving array away from the substrate, the isolation layer comprising an isolation portion and a first portion, the isolation portion surrounding the first portion; Wherein, along a direction parallel to the plane where the substrate is located, the outer side wall of the isolation portion is in contact with the light shielding portion; the pixel unit is located in the first portion; Along a direction perpendicular to the plane where the substrate is located, the minimum distance between the surface of the shading portion facing away from the substrate and the substrate is a first distance, and the minimum distance between the surface of the isolation portion facing away from the substrate and the substrate is a second distance, and the first distance is smaller than the second distance.

2. The display panel according to claim 1, characterized in that: The orthographic projection of the isolation portion on the substrate is a ring shape.

3. The display panel according to claim 1, characterized in that: The multiple pixel units include a first pixel unit and a second pixel unit; the isolation layer includes a plurality of isolation parts, the plurality of isolation parts include a first isolation part and a second isolation part; the isolation layer also includes a plurality of first parts, the plurality of first parts include a first connecting part and a second connecting part, the first connecting part is connected to the first isolation part, and the first isolation part and the first connecting part form a first structure, the first structure wraps the first pixel unit, the second connecting part is connected to the second isolation part, and the second isolation part and the second connecting part form a second structure, the second structure wraps the second pixel unit; along a direction parallel to the plane where the substrate is located, the first structure and the second structure include the shading part.

4. The display panel according to claim 3, characterized in that: An orthographic projection of the first structure on the substrate and an orthographic projection of the second structure on the substrate have different areas.

5. The display panel according to claim 1, characterized in that: The plurality of pixel units include a first pixel unit and a second pixel unit; the isolation layer includes a plurality of isolation parts, the plurality of isolation parts include a first isolation part and a second isolation part; the isolation layer also includes a plurality of first parts, the plurality of first parts include a first opening and a second opening; the first isolation part surrounds the first opening, and the second isolation part surrounds the second opening; The first pixel unit is located at the first opening, and the second pixel unit is located at the second opening.

6. The display panel according to claim 5, characterized in that: The distance between the first isolating portion and the first pixel unit and the side wall facing away from the light shielding portion is greater than zero, and the distance between the second isolating portion and the second pixel unit and the side wall facing away from the light shielding portion is greater than zero.

7. The display panel according to claim 1, characterized in that: The multiple pixel units include a first pixel unit and a second pixel unit, and the color of the first pixel unit is different from the color of the second pixel unit; the isolation layer includes a plurality of isolation parts, and the plurality of isolation parts include a first isolation part and a second isolation part; the isolation layer also includes a plurality of first parts, and the plurality of first parts include a first connecting part and a first opening, the first connecting part is connected to the first isolation part, and the first isolation part and the first connecting part constitute a first structure, the first structure wraps the first pixel unit, and the second pixel unit is located at the first opening.

8. The display panel according to claim 7, characterized in that: Along a direction parallel to the plane where the substrate is located, the light shielding portion is included between the first structure and the second isolation portion.

9. The display panel according to claim 7, characterized in that: The first pixel unit is a green pixel unit or a blue pixel unit, and the second pixel unit is a red pixel unit.

10. The display panel according to any one of claims 3 to 9, characterized in that: Along a direction perpendicular to the plane where the substrate is located, the minimum distance between the surface of the first isolation portion facing away from the substrate and the substrate is a first sub-distance, and the minimum distance between the surface of the second isolation portion facing away from the substrate and the substrate is a second sub-distance, and the first sub-distance is not equal to the second sub-distance.

11. The display panel according to any one of claims 3 to 9, characterized in that: The shape of the orthographic projection of the first isolation portion on the substrate is different from the shape of the orthographic projection of the second isolation portion on the substrate; Alternatively, a shape of an orthographic projection of the first isolation portion on the substrate is similar to but not congruent with a shape of an orthographic projection of the second isolation portion on the substrate.

12. The display panel according to claim 1, characterized in that: The multiple pixel units include a first pixel unit, a second pixel unit and a third pixel unit, the color of the first pixel unit, the color of the second pixel unit and the color of the third pixel unit are different from each other, and the first pixel unit, the second pixel unit and the third pixel unit are located in a first pixel group; the isolation layer includes a plurality of isolation parts, and the plurality of isolation parts include a third isolation part; the isolation layer also includes a plurality of first parts, and the plurality of first parts include a third connecting part, and the third connecting part is connected to the third isolation part, and the third connecting part and the third isolation part constitute a third structure, and the third structure wraps the first pixel group; and along a direction parallel to the plane where the substrate is located, the third connecting part fills the space between adjacent pixel units in the same first pixel group.

13. The display panel according to claim 1, characterized in that: The multiple pixel units include a first pixel unit, a second pixel unit and a third pixel unit, the colors of the first pixel unit, the colors of the second pixel unit and the colors of the third pixel unit are different, and the first pixel unit, the second pixel unit and the third pixel unit are located in a second pixel group; the isolation layer includes a plurality of isolation parts, the plurality of isolation parts include a third isolation part, the isolation layer includes a plurality of first parts, the plurality of first parts include a third opening, the third isolation part surrounds the third opening, and the second pixel group is located in the third opening.

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

Images