Sub-panel, display panel, display device and manufacturing method of display panel

Abstract

The embodiment of the invention provides a sub-panel, a display panel, a display device and a manufacturing method of the display panel. The sub-panel comprises a first substrate; the first substrate is provided with a splicing edge; the light-emitting layer is arranged on one side of the first substrate, and the light-emitting layer comprises a plurality of light-emitting units which are arranged at intervals; the packaging layer is arranged on one side, deviating from the first substrate, of the light-emitting layer; the light shielding layer comprises a first light shielding part and a second light shielding part which are arranged on the side, facing the first substrate, of the packaging layer, the first light shielding part is located between the adjacent light emitting units, and at least part of the second light shielding part is located on the peripheral side of the packaging layer; wherein the second shading part and the packaging layer are arranged in a protruding manner relative to the first substrate, so that when the at least two sub-panels are mutually spliced to form the display panel, the second shading part can cover a splicing seam between the two adjacent sub-panels, the display difference of the splicing seam position is reduced, and the use performance of the display panel is improved.

Description

Technical Field

[0001] This application relates to the field of display device technology, and in particular to a sub-panel, a display panel, a display device, and a method for manufacturing the display panel. Background Technology

[0002] Organic light-emitting diodes (OLEDs) and flat panel displays based on light-emitting diodes (LEDs) are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body, and wide range of applications, becoming the mainstream of display devices.

[0003] However, the performance of current display products needs to be improved. Summary of the Invention

[0004] This application provides a sub-panel, a display panel, a display device, and a method for manufacturing a display panel, aiming to improve the performance of the display panel.

[0005] An embodiment of the first aspect of this application provides a sub-panel, comprising: a first substrate; a light-emitting layer disposed on one side of the first substrate, the light-emitting layer including a plurality of spaced-apart light-emitting units; an encapsulation layer disposed on the side of the light-emitting layer away from the first substrate; and a light-shielding layer including a first light-shielding portion and a second light-shielding portion disposed on the side of the encapsulation layer facing the first substrate, the first light-shielding portion being located between adjacent light-emitting units, and at least a portion of the second light-shielding portion being located on the periphery of the encapsulation layer; wherein the second light-shielding portion and the encapsulation layer protrude relative to the first substrate.

[0006] According to an embodiment of this application, a plurality of light-emitting units form a pixel array, and a second light-shielding part is arranged around the pixel array.

[0007] According to the embodiments of this application, the dimensions of the first light-shielding portion and the second light-shielding portion are equal along the thickness direction of the sub-panel.

[0008] According to the embodiments of this application, the first light-shielding part and / or the second light-shielding part have a third spacing between the side of the first substrate away from the first substrate and the first substrate, and the light-emitting unit has a fourth spacing between the side of the first substrate away from the first substrate and the first substrate, wherein the third spacing is equal to the fourth spacing.

[0009] According to the embodiments of this application, the first light-shielding part and the second light-shielding part are made of the same material.

[0010] According to the embodiments of this application, the first light-shielding part has a first gap between itself and the first substrate on the side away from the first substrate, and the second light-shielding part has a second gap between itself and the first substrate on the side away from the first substrate, wherein the first gap is equal to the second gap.

[0011] According to the embodiments of this application, at least a portion of the first light-shielding portion is spaced apart from the first substrate; and / or, at least a portion of the second light-shielding portion is spaced apart from the first substrate.

[0012] The second aspect of this application provides a display panel including the sub-panel in any of the embodiments of the first aspect, at least two sub-panels are arranged side by side, a first substrate has a splicing edge, at least one splicing edge forms a splicing seam with an adjacent sub-panel, the encapsulation layers of the two adjacent sub-panels are connected, and the second light-shielding portions of the two adjacent sub-panels are connected and cover the splicing seam.

[0013] According to the embodiments of this application, the splicing edge includes a first splicing edge, and the first splicing edges of two adjacent sub-panels are spaced apart to form a splicing seam, and the second light-shielding part covers the first splicing edge.

[0014] According to an embodiment of this application, the splicing edge further includes a second splicing edge, the second splicing edge being provided with a side encapsulation portion, and a second light-shielding portion covering the side encapsulation portion.

[0015] According to the embodiments of this application, the side encapsulation portions of two adjacent sub-panels are spaced apart to form a splicing seam, or the side encapsulation portions of two adjacent sub-panels are connected.

[0016] A third aspect of this application provides a display device including a sub-panel as described in any of the embodiments of the first aspect, or including a display panel as described in the embodiments of the second aspect.

[0017] The fourth aspect of this application provides a method for manufacturing a display panel, comprising:

[0018] An encapsulation layer is formed on one side of the second substrate;

[0019] Multiple light-emitting units are formed on the side of the encapsulation layer away from the second substrate, with the light-emitting surface of the light-emitting unit facing the encapsulation layer.

[0020] A light-shielding layer is formed on the side of the encapsulation layer away from the second substrate. The light-shielding layer includes a first light-shielding portion and a second light-shielding portion. The first light-shielding portion is located between adjacent light-emitting units, and at least a portion of the second light-shielding portion is located on the periphery of the encapsulation layer.

[0021] A second substrate with a light-emitting unit, an encapsulation layer, and a light-shielding layer is attached to a first substrate to form a sub-panel, wherein the second light-shielding portion and the encapsulation layer protrude relative to the first substrate.

[0022] According to the embodiments of this application, the first substrate has a splicing edge, and the manufacturing method further includes: arranging at least two sub-panels side by side, forming a splicing seam between at least one splicing edge and an adjacent sub-panel, connecting two adjacent second light-shielding portions, and the orthographic projection of the splicing seam on the encapsulation layer is located within the orthographic projection of the second light-shielding portion on the encapsulation layer.

[0023] In the embodiments of this application, the second light-shielding portion and the encapsulation layer protrude from the first substrate in a direction away from the light-emitting unit. When multiple sub-panels are spliced ​​together to form a spliced ​​display panel, the encapsulation layers of two adjacent sub-panels protrude from the first substrate to reduce the probability of collision between adjacent first substrates. Furthermore, a splicing seam is formed between the first substrates of two adjacent sub-panels. The second light-shielding portion protrudes from the first substrate to block the splicing seam, reducing the display difference between the splicing seam position and the gap position between adjacent light-emitting units within the same sub-panel. The first and second light-shielding portions are disposed on the same layer as the light-emitting unit, which improves the light-shielding effect of the light-shielding layer and reduces the thickness of the sub-panels, thus improving the performance of the display panel. Attached Figure Description

[0024] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, wherein the same or similar reference numerals denote the same or similar features.

[0025] Figure 1 This is a schematic diagram of the structure of a sub-panel provided in an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application;

[0027] Figure 3 yes Figure 2 Cross-sectional view at point AA;

[0028] Figure 4 This is a schematic diagram of another display panel structure provided in an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the structure of another display panel provided in the embodiments of this application;

[0030] Figure 6 This is a schematic diagram of the structure of another display panel provided in the embodiments of this application;

[0031] Figure 7 This is a flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application;

[0032] Figures 8 to 10 This is a schematic diagram of a manufacturing process for a display panel provided in an embodiment of this application.

[0033] Explanation of reference numerals in the attached drawings: 100, first substrate; 101, first surface; 102, second surface; 110, splicing edge; 120, splicing seam; 130, first splicing edge; 140, second splicing edge; 150, side encapsulation portion; 200, light-emitting unit; 210, pixel array; 300, light-shielding layer; 310, first light-shielding portion; 320, second light-shielding portion; 400, encapsulation layer; 500, second substrate; a, first spacing; b, second spacing; c, third spacing; d, fourth spacing; X, thickness direction. Detailed Implementation

[0034] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0035] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the embodiments of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] like Figure 1As shown in the first aspect embodiment of this application, a sub-panel is provided. The sub-panel includes: a first substrate 100, a light-emitting layer, a light-shielding layer 300, and an encapsulation layer 400. The light-emitting layer is disposed on one side of the first substrate 100 and includes a plurality of spaced light-emitting units 200. The encapsulation layer 400 is disposed on the side of the light-emitting layer away from the first substrate 100. The light-shielding layer 300 is disposed on the side of the encapsulation layer facing the first substrate 100 and includes a first light-shielding portion 310 and a second light-shielding portion 320. The first light-shielding portion 310 is located between adjacent light-emitting units 200, and at least a portion of the second light-shielding portion 320 is located around the encapsulation layer 400. The second light-shielding portion 320 and the encapsulation layer 400 protrude relative to the first substrate 100.

[0038] In this embodiment, the first light-shielding part 310 is located between adjacent light-emitting units 200. The first light-shielding part 310 can reduce light crosstalk between different light-emitting units 200 and improve the display effect of the sub-panel. At least a portion of the second light-shielding part 320 is located around the encapsulation layer 400. The second light-shielding part 320 and the encapsulation layer 400 protrude from the first substrate 100 in a direction away from the light-emitting unit 200. When multiple sub-panels are spliced ​​together to form a spliced ​​display panel, the encapsulation layer 400 of two adjacent sub-panels protrudes from the first substrate 100 to reduce the probability of two adjacent first substrates 100 colliding with each other. Furthermore, a splicing seam 120 is formed between the first substrates 100 of two adjacent sub-panels. The second light-shielding part 320 protrudes from the first substrate 100 to block the splicing seam 120, reducing the display difference between the position of the splicing seam 120 and the gap position between adjacent light-emitting units 200 in the same sub-panel. The first light-shielding part 310 and the second light-shielding part 320 are arranged on the same layer as the light-emitting unit 200, which can improve the light-shielding effect of the light-shielding layer 300 and reduce the thickness of the sub-panel, thus improving the performance of the display panel.

[0039] like Figure 1 and Figure 2 As shown, in some optional embodiments, a plurality of light-emitting units 200 form a pixel array 210, and a second light-shielding portion 320 is disposed around the pixel array 210.

[0040] In these optional embodiments, the sub-panel includes a plurality of light-emitting units 200, the plurality of light-emitting units 200 forming a pixel array 210, a second light-shielding part 320 surrounds the pixel array 210, the second light-shielding part 320 is located between the pixel arrays 210 of two adjacent sub-panels, that is, the second light-shielding part 320 is located between the light-emitting units 200 on two adjacent sub-panels, the second light-shielding part 320 can reduce light crosstalk between adjacent pixel arrays 210.

[0041] Optional, such as Figure 1As shown, the first light-shielding part 310 and the second light-shielding part 320 have the same size along the thickness direction X of the sub-panel, which can reduce the display difference between the positions of the first light-shielding part 310 and the second light-shielding part 320 and improve the display uniformity of the sub-panel.

[0042] Optionally, the first light-shielding part 310 and the second light-shielding part 320 are made of the same material, and the first light-shielding part 310 and the second light-shielding part 320 can be manufactured simultaneously in the same manufacturing process, thereby simplifying the manufacturing process. At the same time, it can reduce the display difference in the position of the first light-shielding part 310 and the second light-shielding part 320.

[0043] like Figure 1 As shown, in some optional embodiments, the first light-shielding part 310 has a first distance a between itself and the first substrate 100 on the side away from the first substrate 100, and the second light-shielding part 320 has a second distance b between itself and the first substrate 100 on the side away from the first substrate 100, wherein the first distance a is equal to the second distance b.

[0044] In these optional embodiments, the first spacing a is equal to the second spacing b, and the side of the first light-shielding portion 310 facing away from the first substrate 100 is coplanar with the side of the second light-shielding portion 320 facing away from the first substrate 100. This allows the first light-shielding portion 310 and the second light-shielding portion 320 to be patterned on the same second substrate 500, improving the consistency between the two portions and reducing display differences. Furthermore, the first light-shielding portion 310 and the second light-shielding portion 320 are transferred from the second substrate 500 to the first substrate 100 side, thereby simplifying the fabrication process.

[0045] like Figure 1 As shown, in some optional embodiments, at least a portion of the first light-shielding portion 310 is spaced apart from the first substrate 100.

[0046] In these optional embodiments, the light-emitting unit 200 is electrically connected to the first substrate 100, which includes a driving circuit for driving the light-emitting unit 200 to emit light. The first light-shielding portion 310 is spaced apart from the first substrate 100, meaning the light-emitting unit 200 protrudes towards the first substrate 100 relative to the first light-shielding portion 310. This facilitates the electrical connection between the light-emitting unit 200 and the first substrate 100 and reduces the probability of insulation between the light-emitting unit 200 and the first substrate 100 caused by the material of the first light-shielding portion 310 covering the light-emitting unit 200.

[0047] like Figure 1 As shown, in some optional embodiments, at least a portion of the second light-shielding portion 320 is spaced apart from the first substrate 100.

[0048] In these optional embodiments, at least a portion of the second light-shielding portion 320 is spaced apart from the first substrate 100, which can reduce the impact of the first substrate 100 on the fabrication of the second light-shielding portion 320 and improve the consistency of the shape and thickness of the first light-shielding portion 310 and the second light-shielding portion 320. Furthermore, it can also reduce the impact of the second light-shielding portion 320 on the splicing seam 120 between the first substrates 100 of adjacent sub-panels. When the first light-shielding portion 310 is spaced apart from the first substrate 100, and the second light-shielding portion 320 is also spaced apart from the first substrate 100, the first light-shielding portion 310 and the second light-shielding portion 320 have the same dimensions along the thickness direction X of the display panel, allowing the first light-shielding portion 310 and the second light-shielding portion 320 to be fabricated simultaneously in the same manufacturing process, thereby simplifying the manufacturing process.

[0049] like Figure 1 As shown, in some optional embodiments, the first light-shielding part 310 has a third distance c between itself and the first substrate 100 on the side away from the first substrate 100, and the light-emitting unit 200 has a fourth distance d between itself and the first substrate 100 on the side away from the first substrate 100, wherein the third distance c is equal to the fourth distance d.

[0050] In these optional embodiments, the side of the light-emitting unit 200 facing away from the first substrate 100 is the light-emitting surface of the light-emitting unit 200, the third spacing c is equal to the fourth spacing d, and the side of the first light-shielding part 310 facing away from the first substrate 100 is coplanar with the light-emitting surface of the light-emitting unit 200, which can improve the effect of the first light-shielding part 310 in preventing crosstalk between different light-emitting units 200. Furthermore, when manufacturing the light-emitting unit 200 and the first light-shielding part 310, the light-emitting unit 200 and the first light-shielding part 310 are on the same second substrate 500, and then the first light-shielding part 310 and the light-emitting unit 200 are simultaneously transferred from the second substrate 500 to the side of the first substrate 100, thereby simplifying the manufacturing process.

[0051] like Figure 1 As shown, in some optional embodiments, the second light-shielding portion 320 has a third spacing c between itself and the first substrate 100 on the side away from the first substrate 100, and the light-emitting unit 200 has a fourth spacing d between itself and the first substrate 100 on the side away from the first substrate 100, wherein the third spacing c is equal to the fourth spacing d.

[0052] In these optional embodiments, the side of the light-emitting unit 200 facing away from the first substrate 100 is the light-emitting surface of the light-emitting unit 200, the third spacing c is equal to the fourth spacing d, and the side of the second light-shielding part 320 facing away from the first substrate 100 is coplanar with the light-emitting surface of the light-emitting unit 200, which can improve the effect of the second light-shielding part 320 on preventing crosstalk between different light-emitting units 200 between adjacent sub-panels. Furthermore, when manufacturing the light-emitting unit 200 and the second light-shielding part 320, the light-emitting unit 200 and the second light-shielding part 320 are on the same second substrate 500, and then the second light-shielding part 320 and the light-emitting unit 200 are simultaneously transferred from the second substrate 500 to the side of the first substrate 100, thereby simplifying the manufacturing process.

[0053] like Figure 1 As shown, the encapsulation layer 400 covers the light-shielding layer 300 and the light-emitting layer, thereby reducing the entry of water, oxygen, etc. into the light-emitting unit 200 and improving the service life of the light-emitting unit 200. The encapsulation layer 400 is formed on one side of the second substrate 500, and the light-emitting unit 200, the first light-shielding part 310 and the second light-shielding part 320 are formed on the side of the encapsulation layer 400 away from the second substrate 500. When the encapsulation layer 400, the light-emitting unit 200, the first light-shielding part 310 and the second light-shielding part 320 are transferred to the first substrate 100 and the sub-panels are spliced ​​to form a spliced ​​display panel, the encapsulation layers 400 of two adjacent sub-panels are connected to cover the splicing seam 120. This allows the second light-shielding parts 320 of two adjacent sub-panels located on one side of the encapsulation layer 400 to be connected to cover the splicing seam 120, improving the display uniformity of the display panel.

[0054] like Figures 1 to 3 As shown, a second aspect of this application provides a display panel including a sub-panel as described in any of the embodiments of the first aspect above. At least two sub-panels are arranged side by side. A first substrate 100 has a splicing edge 110. At least one splicing edge 110 forms a splicing seam 120 with an adjacent sub-panel. The encapsulation layers 400 of the two adjacent sub-panels are connected to each other, and the second light-shielding portions 320 of the two adjacent sub-panels are connected to each other and cover the splicing seam 120.

[0055] In this embodiment, at least two sub-panels are arranged side by side along the thickness direction X perpendicular to the display panel to form a splicing display panel. At least one splicing edge 110 forms a splicing seam 120 with the adjacent sub-panel. The encapsulation layers 400 of the two adjacent sub-panels are connected so that the second light-shielding part 320 is connected and covers the splicing seam 120. The orthographic projection of the splicing seam 120 on the encapsulation layer 400 is located within the orthographic projection of the second light-shielding part 320 on the encapsulation layer 400, which reduces the display difference between the position of the splicing seam 120 and the gap position between adjacent light-emitting units 200 in the same sub-panel, which is beneficial to improving the performance of the display panel.

[0056] like Figure 3As shown, the first substrate 100 includes a first surface 101 and a second surface 102 disposed opposite to each other along the thickness direction X. The light-emitting unit 200 is disposed on one side of the first surface 101, and the second surface 102 is located on the side of the first surface 101 away from the light-emitting unit 200. The splicing edge 110 is connected between the first surface 101 and the second surface 102.

[0057] like Figure 3 and Figure 4 As shown, in some optional embodiments, the splicing edge 110 includes a first splicing edge 130, and the first splicing edges 130 of two adjacent sub-panels are spaced apart to form a splicing seam 120, and the second light-shielding part 320 covers the first splicing edge 130.

[0058] In these optional embodiments, each of two adjacent sub-panels includes a first splicing edge 130. The two adjacent sub-panels are arranged side-by-side, with the first splicing edges 130 of the two adjacent sub-panels spaced apart to form a splicing seam 120. A second light-shielding portion 320 covers the first splicing edge 130 and protrudes from the first splicing edge 130 in a direction away from the light-emitting unit 200. Therefore, when splicing the sub-panels, the second light-shielding portions 320 of the two adjacent sub-panels are in contact with each other, while the first splicing edges 130 of the two adjacent sub-panels are spaced apart, thus covering the splicing seam 120 and improving the uniformity of the display panel. Furthermore, the spaced first splicing edges 130 of the two adjacent sub-panels reduce the risk of collision damage to the two adjacent first substrates 100.

[0059] like Figures 4 to 6 As shown, in some optional embodiments, the splicing edge 110 further includes a second splicing edge 140, the second splicing edge 140 being provided with a side encapsulation portion 150, and the second light-shielding portion 320 covering the side encapsulation portion 150.

[0060] In these alternative embodiments, the first light-shielding portion 310 is located between adjacent light-emitting units 200 in the same sub-panel, and the second light-shielding portion 320 covers the side encapsulation portion 150, thereby reducing the display difference between the position of the side encapsulation portion 150 and the gap position between adjacent light-emitting units 200 in the same sub-panel.

[0061] Optional, such as Figure 5 and Figure 6 As shown, the sub-panel is provided with side traces, which are disposed on the first substrate 100 and located at the second splicing edge 140. The side encapsulation part 150 is used to encapsulate the side traces, reducing the corrosion of the side traces by water, oxygen and other substances, and improving the reliability of the display panel.

[0062] Optional, such as Figure 5 and Figure 6As shown, the side trace extends from the first surface 101 through the second splicing edge 140 to the second surface 102. The side encapsulation part 150 covers the side of the side trace away from the first surface 101, the side of the side trace away from the second splicing edge 140, and the side of the side trace away from the second surface 102.

[0063] Optional, such as Figure 5 As shown, the side encapsulation portions 150 of two adjacent sub-panels are spaced apart to form a splicing seam 120, and the second light-shielding portions 320 of two adjacent sub-panels are connected to cover the side encapsulation portions 150 and the splicing seam 120 between the side encapsulation portions 150.

[0064] Optional, such as Figure 6 As shown, the side encapsulation portions 150 of two adjacent sub-panels are connected, and the second light-shielding portion 320 covers the side encapsulation portion 150. Two adjacent second light-shielding portions 320 are connected to block the side encapsulation portion 150 and the gap between the side encapsulation portions 150. The side encapsulation portion 150 covers the second splicing edge 140, thereby reducing the risk of collision damage between adjacent second splicing edges 140.

[0065] The embodiments of the third aspect of this application also provide a display device, including a sub-panel of any of the first aspect embodiments or a display panel of any of the second aspect embodiments. Since the display device provided by the third aspect embodiments of this application includes a sub-panel of any of the first aspect embodiments or a display panel of any of the second aspect embodiments, the display device provided by the third aspect embodiments of this application has the beneficial effects of the sub-panel of any of the first aspect embodiments or the display panel of any of the second aspect embodiments, which will not be elaborated further here.

[0066] The display devices in this application include, but are not limited to, mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, control consoles, and other devices with display functions.

[0067] The fourth aspect of this application also provides a method for manufacturing a display panel, such as... Figure 7 As shown, it includes:

[0068] Step S01: As Figure 8 As shown, an encapsulation layer 400 is formed on one side of the second substrate 500.

[0069] Step S02: As Figure 9 As shown, a plurality of light-emitting units 200 are formed on the side of the encapsulation layer 400 away from the second substrate 500, and the light-emitting surface of the light-emitting unit 200 faces the side of the encapsulation layer 400.

[0070] Step S03: As Figure 10 As shown, a light-shielding layer 300 is formed on the side of the encapsulation layer 400 away from the second substrate 500. The light-shielding layer 300 includes a first light-shielding portion 310 and a second light-shielding portion 320. The first light-shielding portion 310 is located between adjacent light-emitting units 200, and at least a portion of the second light-shielding portion 320 is located around the periphery of the encapsulation layer 400.

[0071] Step S04: As Figure 1 As shown, a second substrate 500 with a light-emitting unit 200, an encapsulation layer 400 and a light-shielding layer 300 is attached to a first substrate 100 to form a sub-panel, and the second light-shielding portion 320 and the encapsulation layer 400 are provided to protrude relative to the first substrate 100.

[0072] In this embodiment, the light-emitting unit 200, the first light-shielding portion 310, and the second light-shielding portion 320 are formed on one side of the encapsulation layer 400, such that the light-emitting unit 200, the first light-shielding portion 310, and the second light-shielding portion 320 are coplanar facing the encapsulation layer 400, improving the anti-crosstalk effect of the first light-shielding portion 310 and the second light-shielding portion 320 between different light-emitting units 200. The light-emitting side of the light-emitting unit 200 faces the encapsulation layer 400, reducing the probability of material from the first light-shielding portion 310 and the second light-shielding portion 320 intruding into the light-emitting side of the light-emitting unit 200. The first light-shielding portion 310 and the second light-shielding portion 320 are formed on one side of the encapsulation layer 400 in the same patterning process, improving the consistency of the first light-shielding portion 310 and the second light-shielding portion 320, thereby reducing display differences between the first light-shielding portion 310 and the second light-shielding portion 320. A second substrate 500, which includes a light-emitting unit 200, an encapsulation layer 400, and a light-shielding layer 300, is attached to a first substrate 100 to form a sub-panel. The second light-shielding portion 320 and the encapsulation layer protrude from the first substrate 100. When multiple sub-panels are spliced ​​together, the second light-shielding portion 320 of the encapsulation layer 400 can prevent two adjacent first substrates 100 from colliding with each other. The second light-shielding portion 320 can block the splicing seam 120 formed between two adjacent first substrates 100, reduce the display difference at the position of the splicing seam 120, and improve the display effect of the display panel.

[0073] like Figure 3 As shown, in some optional embodiments, the first substrate 100 has a splicing edge 110, and the manufacturing method further includes: arranging at least two sub-panels side by side, forming a splicing seam 120 between at least one splicing edge 110 and an adjacent sub-panel, connecting two adjacent second light-shielding portions 320, and the orthographic projection of the splicing seam 120 on the encapsulation layer 400 is located within the orthographic projection of the second light-shielding portion 320 on the encapsulation layer 400.

[0074] In these alternative embodiments, the orthographic projection of the seam 120 on the encapsulation layer 400 is located within the orthographic projection of the second light-shielding portion 320 on the encapsulation layer 400, thereby enabling the second light-shielding portion 320 to block the seam 120 and reduce the display difference at the position of the seam 120.

[0075] like Figure 3 As shown, in some alternative embodiments, the edge of the encapsulation layer 400 protrudes relative to at least one splicing edge 110 in a direction away from the light-emitting unit 200.

[0076] In these alternative embodiments, a second encapsulation portion is formed on the encapsulation layer 400, the edge of the encapsulation layer 400 protrudes from at least one splicing edge 110 in a direction away from the light-emitting unit 200, and at least a portion of the second light-shielding portion 320 is formed on the edge of the encapsulation layer 400, thereby enabling the second light-shielding portion 320 to block the splicing seam 120.

[0077] In some optional embodiments, prior to step S04, the second substrate 500 is further peeled off.

[0078] In these alternative embodiments, removing the second substrate 500 can reduce the obstruction of light emitted by the light-emitting unit 200 by the second substrate 500 and can reduce the thickness of the display panel.

[0079] Optionally, the adhesive strength between the second substrate 500 and the encapsulation layer 400 is less than the adhesive strength between the encapsulation layer 400 and the light-emitting unit 200, so as to facilitate the peeling of the second substrate 500 from the encapsulation layer 400 side.

[0080] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A sub-panel, characterized in that, include: First substrate; A light-emitting layer is disposed on one side of the first substrate, and the light-emitting layer includes a plurality of spaced light-emitting units; An encapsulation layer is disposed on the side of the light-emitting layer opposite to the first substrate; A light-shielding layer, the light-shielding layer including a first light-shielding portion and a second light-shielding portion disposed on the side of the encapsulation layer facing the first substrate, the first light-shielding portion being located between adjacent light-emitting units, and at least a portion of the second light-shielding portion being located on the periphery of the encapsulation layer; The second light-shielding portion and the encapsulation layer are provided to protrude relative to the first substrate.

2. The sub-panel according to claim 1, characterized in that, The plurality of light-emitting units form a pixel array, and the second light-shielding part is disposed around the pixel array; Preferably, the dimensions of the first light-shielding portion and the second light-shielding portion are equal along the thickness direction of the sub-panel; Preferably, the first light-shielding portion and / or the second light-shielding portion have a third distance between themselves and the first substrate on the side away from the first substrate, and the light-emitting unit has a fourth distance between itself and the first substrate on the side away from the first substrate, wherein the third distance is equal to the fourth distance. Preferably, the first light-shielding part and the second light-shielding part are made of the same material.

3. The sub-panel according to claim 1, characterized in that, The first light-shielding part has a first gap between itself and the first substrate on the side away from the first substrate, and the second light-shielding part has a second gap between itself and the first substrate on the side away from the first substrate, wherein the first gap is equal to the second gap.

4. The sub-panel according to claim 1, characterized in that, At least a portion of the first light-shielding portion is spaced apart from the first substrate; and / or, at least a portion of the second light-shielding portion is spaced apart from the first substrate.

5. A display panel, characterized in that, The sub-panel includes any one of claims 1-4, wherein at least two of the sub-panels are arranged side by side, the first substrate has a splicing edge, at least one of the splicing edges forms a splicing seam with an adjacent sub-panel, the encapsulation layers of the two adjacent sub-panels are connected, and the second light-shielding portions of the two adjacent sub-panels are connected and cover the splicing seam.

6. The display panel according to claim 5, characterized in that, The splicing edge includes a first splicing edge, and the first splicing edges of two adjacent sub-panels are spaced apart to form the splicing seam, and the second light-shielding part covers the first splicing edge.

7. The display panel according to claim 5, characterized in that, The splicing edge also includes a second splicing edge, the second splicing edge being provided with a side encapsulation portion, and the second light-shielding portion covering the side encapsulation portion; Preferably, the side encapsulation portions of two adjacent sub-panels are spaced apart to form the splicing seam, or the side encapsulation portions of two adjacent sub-panels are connected.

8. A display device, characterized in that, It includes the sub-panel as described in any one of claims 1-4; or, it includes the display panel as described in any one of claims 5-7.

9. A method for manufacturing a display panel, characterized in that, include: An encapsulation layer is formed on one side of the second substrate; Multiple light-emitting units are formed on the side of the encapsulation layer away from the second substrate, with the light-emitting surface of the light-emitting unit facing the encapsulation layer. A light-shielding layer is formed on the side of the encapsulation layer away from the second substrate. The light-shielding layer includes a first light-shielding portion and a second light-shielding portion. The first light-shielding portion is located between adjacent light-emitting units, and at least a portion of the second light-shielding portion is located on the periphery of the encapsulation layer. The second substrate, which includes the light-emitting unit, the encapsulation layer, and the light-shielding layer, is attached to the first substrate to form a sub-panel, wherein the second light-shielding portion and the encapsulation layer protrude relative to the first substrate.

10. The manufacturing method according to claim 9, characterized in that, The first substrate has a splicing edge, and the manufacturing method further includes: At least two of the sub-panels are arranged side by side, and at least one of the splicing edges forms a splicing seam with the adjacent sub-panel. Two adjacent second light-shielding parts are connected, and the orthographic projection of the splicing seam on the encapsulation layer is located within the orthographic projection of the second light-shielding part on the encapsulation layer.

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