Manufacturing method of display panel, display panel and auxiliary processing device

Abstract

The application relates to a manufacturing method of a display panel, the display panel and an auxiliary processing device. The manufacturing method of the display panel comprises the following steps: providing a substrate, the substrate has a first preset area corresponding to a display area and a second preset area corresponding to a blind hole area; forming a pixel circuit and an anode layer in the first preset area of the substrate; forming a first organic layer group on the side, away from the substrate, of the anode layer, and forming a second organic layer group in the second preset area of the substrate; arranging an adsorption plate on the side, away from the pixel circuit, of the substrate, arranging a shielding piece capable of being magnetically attracted to the adsorption plate in the second preset area, the shielding piece being in contact with the second organic layer group and covering the second preset area in the thickness direction of the substrate; forming a first cathode layer on the side, away from the anode layer, of the first organic layer group, and forming a second cathode layer on the side, away from the substrate, of the shielding piece; and removing the shielding piece to remove the second cathode layer.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a method for manufacturing a display panel, the display panel itself, and an auxiliary processing apparatus. Background Technology

[0002] With the continuous development of technology, displays are gradually evolving towards full-screen designs. Currently, the design of incorporating blind holes in the display panel and integrating under-display electronic components below the corresponding blind hole area has become one of the mainstream designs for full-screen displays. These under-display electronic components can be cameras or other optical components. In related technologies, the light transmittance of the blind hole area in the display panel is relatively low, affecting the light-gathering performance of the blind hole area. Summary of the Invention

[0003] Therefore, it is necessary to provide a method for manufacturing a display panel, a display panel, and an auxiliary processing device to improve the light-gathering performance of the blind hole area of ​​the display panel.

[0004] According to one aspect of this application, a method for manufacturing a display panel is provided, the display panel having a blind hole area and a display area at least partially surrounding the blind hole area, the manufacturing method comprising:

[0005] A substrate is provided, the substrate having a first preset area corresponding to the display area and a second preset area corresponding to the blind hole area;

[0006] A pixel circuit and an anode layer are formed in a first predetermined region of the substrate;

[0007] A first organic layer group is formed on the side of the anode layer opposite to the substrate, and a second organic layer group is formed in the second predetermined region of the substrate;

[0008] An adsorption plate is provided on the side of the substrate away from the pixel circuit, and a shielding member is provided in the second preset area that can be magnetically attracted to the adsorption plate. The shielding member is in contact with the second organic layer group and covers the second preset area in the thickness direction of the substrate.

[0009] A first cathode layer is formed on the side of the first organic layer group away from the anode layer, and a second cathode layer is formed on the side of the shielding member away from the substrate.

[0010] Remove the shielding element to remove the material located in the second cathode layer.

[0011] The method for manufacturing a display panel in this embodiment involves forming a first organic layer group in a first preset region of a substrate and a second organic layer group in a second preset region of the substrate. An adsorption plate is then placed on the side of the substrate away from the pixel circuit. A blocking member, capable of attracting the adsorption plate, is placed in the second preset region. The blocking member contacts and covers the second organic layer group. A first cathode layer is then formed on the side of the first organic layer group away from the anode layer, and a second cathode layer is formed on the side of the blocking member away from the substrate. The second cathode layer is then removed by removing the blocking member. This completely removes the second cathode layer within the second preset region, resulting in a display panel with no cathode layer in the blind hole area. This improves the light transmittance of the blind hole area and thus enhances its light-gathering performance.

[0012] In some embodiments, the adsorption plate is a magnetic plate, and the shielding member is a magnetically conductive metal sheet.

[0013] In some embodiments, the first organic layer group includes a hole injection layer, a hole transport layer, a light emission layer, an electron transport layer, and an electron injection layer stacked together, and the second organic layer group includes a hole injection layer, a hole transport layer, an electron transport layer, and an electron injection layer stacked together.

[0014] In some embodiments, the substrate includes a plurality of sub-boards, each of the sub-boards having a first preset region and a second preset region;

[0015] The step of setting a shielding member in the second preset area that can be magnetically attracted to the adsorption plate includes:

[0016] An auxiliary processing device is provided, the auxiliary processing device including a roller and a plurality of blocking members. The surface of the roller is provided with a plurality of protruding structures. Each blocking member is correspondingly disposed on the top of a protruding structure. An electromagnet is disposed inside the protruding structure. The electromagnet can attract the blocking member when energized.

[0017] The roller is made to roll along the substrate. During the rolling of the roller, when the shielding member comes into contact with the second organic layer group in the second preset area of ​​the corresponding sub-plate, the electromagnet corresponding to the shielding member is de-energized, so that the shielding member is attached to the second organic layer group by the attraction force with the adsorption plate.

[0018] In some embodiments, the substrate includes a plurality of sub-boards, each of the sub-boards having a first preset region and a second preset region;

[0019] The step of removing the obstruction includes:

[0020] An auxiliary processing device is provided, the auxiliary processing device including a roller and a plurality of blocking members. The surface of the roller is provided with a plurality of protruding structures. Each blocking member is correspondingly disposed on the top of a protruding structure. An electromagnet is disposed inside the protruding structure. The electromagnet can attract the blocking member when energized.

[0021] The roller is made to roll along the substrate. During the rolling of the roller, the electromagnet is energized so that each electromagnet attracts the corresponding shielding member, causing the shielding member to separate from the second organic layer group.

[0022] In some embodiments, the step of forming a first organic layer group on the side of the anode layer opposite to the substrate and forming a second organic layer group in the second predetermined region of the substrate includes:

[0023] The material of the light-emitting layer is deposited onto the substrate by vapor deposition, so as to deposit the first organic layer group on the side of the anode layer away from the substrate, and deposit the second organic layer group in the second predetermined area of ​​the substrate.

[0024] In some embodiments, the step of forming a first cathode layer on the side of the first organic layer group opposite to the anode layer and forming a second cathode layer on the side of the shielding member opposite to the substrate includes:

[0025] The cathode layer material is deposited onto the substrate by vapor deposition, so that a first cathode layer is deposited on the side of the first organic layer group opposite to the anode layer, and a second cathode layer is deposited on the side of the shielding member opposite to the substrate.

[0026] According to another aspect of this application, a display panel is provided, the display panel being manufactured by the method of manufacturing a display panel in any of the above embodiments, the display panel having a blind hole region and a display area at least partially surrounding the blind hole region, the display panel comprising:

[0027] substrate;

[0028] Pixel circuits disposed on the substrate;

[0029] Multiple light-emitting elements disposed in the display area, each light-emitting element comprising an anode layer, a first organic layer group, and a first cathode layer; and

[0030] The second organic layer group is disposed in the blind hole region.

[0031] According to another aspect of this application, an auxiliary processing apparatus is provided, the auxiliary processing apparatus comprising:

[0032] A roller, the surface of which is provided with a plurality of raised structures; and

[0033] Multiple blocking elements are provided, each of which is correspondingly disposed on the top of a protruding structure. An electromagnet is disposed inside the protruding structure, and the electromagnet can attract the blocking element when energized.

[0034] In some embodiments, the substrate to be vapor-deposited includes a plurality of sub-plates arranged in an array; the distance between two adjacent protrusions along the axial direction of the roller is equal to the distance between two adjacent sub-plates in a first direction, and the arc length between two adjacent protrusions along the circumference of the roller is equal to the distance between two adjacent sub-plates in a second direction, wherein the first direction is perpendicular to the second direction.

[0035] In some embodiments, the top of the protruding structure is provided with a groove, and the shielding member is disposed in the groove.

[0036] In some embodiments, the shielding element is a magnetically conductive metal element.

[0037] In some embodiments, the shielding member is a frustum-shaped structure. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the substrate structure in one embodiment of this application;

[0039] Figure 2 This is a schematic diagram of a sub-board of a substrate in one embodiment of this application;

[0040] Figure 3 for Figure 2 A structural schematic diagram of the middle AA section (before the shielding components and the second cathode layer are removed);

[0041] Figure 4 for Figure 2 Schematic diagram of the structure of the middle AA section (when the shielding component and the second cathode layer are removed);

[0042] Figure 5 This is a schematic diagram of the structure of the first organic layer group in one embodiment of this application;

[0043] Figure 6 This is a schematic diagram of the structure of the second organic layer group in one embodiment of this application;

[0044] Figure 7 This is a schematic diagram of the auxiliary processing device in one embodiment of this application;

[0045] Figure 8 This is a schematic diagram of the structure of the shielding member in one embodiment of this application;

[0046] Figure 9 for Figure 8 A bottom view of the structure shown. Detailed Implementation

[0047] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0049] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it may be directly on the other element or there may be intermediate elements present. Furthermore, when a layer is referred to as being "below" another layer, it may be directly below it or there may be one or more light-emitting units present. It is also understood that when a layer is referred to as being "between" two layers, it may be the only layer between the two layers, or there may be one or more light-emitting units present.

[0050] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0051] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0052] It should also be understood that, in interpreting an element, although not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of a particular value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0053] Furthermore, in the instruction manual, the phrase "planar distribution diagram" refers to the diagram when the target part is viewed from above, and the phrase "cross-sectional diagram" refers to the diagram when the target part is viewed from the side as a cross-section taken by vertically cutting the target part.

[0054] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0055] With the continuous development of technology, displays are gradually evolving towards full-screen designs. Currently, the design of incorporating under-display electronic components beneath the corresponding blind hole area in the display panel has become one of the mainstream designs for full-screen displays. These under-display electronic components can be cameras or other optical elements. In related technologies, the display panel typically retains a light-emitting layer and a cathode in the blind hole area. The presence of the cathode leads to lower light transmittance in the blind hole area, thus affecting its light-gathering performance. For example, in the case where the under-display electronic component is a camera, when the light transmittance in the blind hole area is low, the camera's imaging effect will deteriorate.

[0056] To address the aforementioned issues, the first aspect of this application proposes a method for manufacturing a display panel, aiming to improve the light-gathering performance of the blind hole area of ​​the display panel.

[0057] The method for manufacturing a display panel according to the first aspect of this application includes a blind hole area and a display area at least partially surrounding the blind hole area. Please refer to... Figures 1 to 4 The manufacturing method includes the following steps:

[0058] Step S10: Provide a substrate 100, which has a first preset area 102 corresponding to the display area and a second preset area 103 corresponding to the blind hole area;

[0059] Step S20: A pixel circuit 200 and an anode layer 300 are formed in the first preset region 102 of the substrate 100;

[0060] Step S30: A first organic layer group 400 is formed on the side of the anode layer 300 facing away from the substrate 100, and a second organic layer group 500 is formed in the second preset region 103 of the substrate 100.

[0061] Step S40: An adsorption plate 800 is provided on the side of the substrate 100 away from the pixel circuit 200. A shielding member 22 that can be magnetically attracted to the adsorption plate 800 is provided in the second preset area 103. The shielding member 22 is in contact with the second organic layer group 500 and covers the second preset area 103 in the thickness direction of the substrate 100.

[0062] Step S50: A first cathode layer 600 is formed on the side of the first organic layer group 400 away from the anode layer 300, and a second cathode layer 700 is formed on the side of the shielding member 22 away from the substrate 100.

[0063] Step S60: Remove the shielding element 22 to remove the material located in the second cathode layer 700.

[0064] The method for manufacturing a display panel in this embodiment involves forming a first organic layer group 400 in a first preset region 102 of a substrate 100 and a second organic layer group 500 in a second preset region 103 of the substrate 100. An adsorption plate 800 is then disposed on the side of the substrate 100 away from the pixel circuit 200. A blocking member 22, capable of attracting the adsorption plate 800, is disposed in the second preset region 103. The blocking member 22 contacts and covers the second organic layer group 500. A first cathode layer 600 is then formed on the side of the first organic layer group 400 away from the anode layer 300, and a second cathode layer 700 is formed on the side of the blocking member 22 away from the substrate 100. The second cathode layer 700 is then removed by removing the blocking member 22. Thus, the second cathode layer 700 within the second preset region 103 can be completely removed (see reference). Figure 4 This process ensures that the blind hole area of ​​the final display panel does not have a cathode layer, thereby increasing the light transmittance of the blind hole area and thus improving its light-gathering performance.

[0065] In some embodiments, the substrate 100 may be a transparent, translucent, or opaque material, such as a glass plate, a polyimide flexible plate, etc. The substrate 100 may include a plurality of sub-plates 101, each sub-plate 101 being used to form a display panel.

[0066] In some embodiments, the adsorption plate 800 is a magnetic plate, and the blocking member 22 is a sheet of magnetically conductive metal (e.g., iron, iron-containing alloy, etc.). This allows the adsorption plate 800 to be attracted to the blocking member 22 by magnetism. In other embodiments, the adsorption plate 800 is a magnetic plate, and the blocking member 22 is a magnetic sheet, thereby also allowing the adsorption plate 800 to be attracted to the blocking member 22 by magnetism.

[0067] In some embodiments, please refer to Figure 5 and Figure 6The first organic layer group 400 includes a hole injection layer 1001, a hole transport layer 1002, a light-emitting layer 1003, an electron transport layer 1004, and an electron injection layer 1005 stacked together. The second organic layer group 500 also includes the same stacked layers. Thus, in the display area of ​​the fabricated display panel, the anode layer 300, the first organic layer group 400, and the first cathode layer 600 constitute an OLED light-emitting device capable of emitting light. In the blind hole area of ​​the display panel, the second organic layer group 500 only retains the hole injection layer 1001, hole transport layer 1002, electron transport layer 1004, and electron injection layer 1005, which enhance light-gathering performance, and does not include a corresponding light-emitting layer.

[0068] In some embodiments, the substrate 100 includes a plurality of sub-boards 101, each of the sub-boards 101 having a first preset region 102 and a second preset region 103;

[0069] The step of setting a shielding member 22 in the second preset area 103 that can be magnetically attracted to the adsorption plate 800 includes:

[0070] Auxiliary processing device 20 is provided; please refer to it. Figures 7 to 9 The auxiliary processing device 20 includes a roller 21 and multiple blocking components 22. The surface of the roller 21 is provided with multiple protrusions 23. Each blocking component 22 is correspondingly disposed on the top of a protrusion 23. An electromagnet is disposed inside the protrusion 23. When the electromagnet is energized, it can attract the blocking component 22.

[0071] Roller 21 is rolled along substrate 100. During the rolling of roller 21, when shielding member 22 comes into contact with second organic layer group 500 in second preset area 103 in corresponding sub-plate 101, electromagnet corresponding to shielding member 22 is de-energized, so that shielding member 22 is attached to second organic layer group 500 by attraction with adsorption plate 800.

[0072] In this embodiment, the auxiliary processing device 20 can be used to set multiple shielding members 22 on the second preset area 103 of the corresponding sub-plate 101. Specifically, when the roller 21 rolls along the substrate 100, and the shielding member 22 attracted on the protrusion structure 23 contacts the second organic layer group 500 in the second preset area 103 of the corresponding sub-plate 101, the electromagnet in the protrusion structure 23 is de-energized. At this time, the shielding member 22 is attached to the second organic layer group 500 of the sub-plate 101 by the attraction between it and the adsorption plate 800. Thus, each shielding member 22 can be attached to the second organic layer group 500 in the corresponding sub-plate 101 with high efficiency, thereby improving the manufacturing efficiency of the display panel.

[0073] In some embodiments, the substrate 100 includes a plurality of sub-boards 101, each sub-board 101 having a first preset region 102 and a second preset region 103;

[0074] The steps for removing the obstruction 22 include:

[0075] Auxiliary processing device 20 is provided; please refer to it. Figures 7 to 9 The auxiliary processing device 20 includes a roller 21 and multiple blocking components 22. The surface of the roller 21 is provided with multiple protrusions 23. Each blocking component 22 is correspondingly disposed on the top of a protrusion 23. An electromagnet is disposed inside the protrusion 23. When the electromagnet is energized, it can attract the blocking component 22.

[0076] The roller 21 is made to roll along the substrate 100. During the rolling of the roller 21, the electromagnet is energized so that each electromagnet attracts the corresponding shielding member 22, causing the shielding member 22 to separate from the second organic layer group 500.

[0077] In this embodiment, the auxiliary processing device 20 can be used to remove the blocking element 22 from each sub-board 101. Specifically, the electromagnets in the protruding structures 23 on the surface of the roller 21 are energized. As the roller 21 rolls along the substrate 100, each electromagnet contacts and attracts the corresponding blocking element 22 in the sub-board 101. Thus, as the roller 21 continues to roll, the electromagnets can drive the corresponding blocking element 22 to roll, thereby separating the blocking element 22 from the second organic layer group 500 on the sub-board 101. It is evident that by using the auxiliary processing device 20, the blocking element 22 can be removed from each sub-board 101 with high efficiency, thereby removing the second cathode layer 700 from each sub-board 101 and improving the manufacturing efficiency of the display panel.

[0078] Understandably, the magnetic force generated by the electromagnet when energized, between the electromagnet and the blocking member 22, needs to be greater than the magnetic force between the blocking member 22 and the adsorption plate 800. This is necessary for the blocking member 22 to attract the electromagnet and separate from the second organic layer group 500 under the electromagnet's influence.

[0079] In some embodiments, the steps of forming a first organic layer group 400 on the side of the anode layer 300 facing away from the substrate 100 and forming a second organic layer group 500 in a second predetermined region 103 of the substrate 100 include:

[0080] The material of the light-emitting layer is deposited on the substrate 100 by vapor deposition, so as to deposit a first organic layer group 400 on the side of the anode layer 300 away from the substrate 100, and deposit a second organic layer group 500 in the second preset area 103 of the substrate 100.

[0081] In other words, both the first organic layer group 400 and the second organic layer group 500 are manufactured by vapor deposition, and the first organic layer group 400 and the second organic layer group 500 are manufactured simultaneously in one vapor deposition process.

[0082] In some embodiments, the step of forming a first cathode layer 600 on the side of the first organic layer group 400 opposite to the anode layer 300 and forming a second cathode layer 700 on the side of the shielding member 22 opposite to the substrate 100 includes:

[0083] The cathode layer material is deposited onto the substrate 100 by vapor deposition, so that the first cathode layer 600 is deposited on the side of the first organic layer group 400 opposite to the anode layer 300, and the second cathode layer 700 is deposited on the side of the shielding member 22 opposite to the substrate 100.

[0084] In other words, the first cathode layer 600 and the second cathode layer 700 are both manufactured by vapor deposition, and the first cathode layer 600 and the second cathode layer 700 are manufactured simultaneously in one vapor deposition process.

[0085] In some embodiments, please refer to Figure 3 , Figure 8 and Figure 9 The shielding member 22 has a frustum-shaped structure. Therefore, when the shielding member 22 is attached to the second organic layer group 500 and covers the second preset area 103, it helps to reduce the vapor deposition shadow at the edge of the blind hole area during the vapor deposition process, thereby improving the uniformity of the film thickness of the cathode layer around the blind hole area.

[0086] An embodiment of the second aspect of this application provides a display panel, please refer to... Figures 4 to 6 The display panel is manufactured by the method described in any of the above embodiments. The display panel has a blind hole area and a display area at least partially surrounding the blind hole area. The display panel includes:

[0087] substrate 100;

[0088] Pixel circuit 200 disposed on substrate 100;

[0089] Multiple light-emitting elements are disposed in the display area, each light-emitting element including an anode layer 300, a first organic layer group 400, and a first cathode layer 600; and

[0090] The second organic layer group 500 is disposed in the blind hole area.

[0091] The display panel in this embodiment can be used as a display panel for electronic devices with display functions such as mobile phones, tablets, and wearable devices. The blind hole area of ​​the display panel can integrate under-screen electronic components, such as cameras or other optical components.

[0092] In the embodiment of this application, the display panel does not have a cathode layer in the blind hole area. Therefore, the light transmittance of the blind hole area can be improved, thereby improving the light-gathering performance of the blind hole area of ​​the display panel.

[0093] In some embodiments, the first organic layer group 400 includes a hole injection layer 1001, a hole transport layer 1002, a light-emitting layer 1003, an electron transport layer 1004, and an electron injection layer 1005 stacked together, and the second organic layer group 500 includes the same stacked layers. Thus, in the display area of ​​the fabricated display panel, the anode layer 300, the first organic layer group 400, and the first cathode layer 600 constitute an OLED light-emitting device capable of emitting light. In the blind hole area of ​​the display panel, the second organic layer group 500 retains only the hole injection layer 1001, the hole transport layer 1002, the electron transport layer 1004, and the electron injection layer 1005, which enhance light-gathering performance, and does not include a corresponding light-emitting layer.

[0094] An embodiment of the third aspect of this application provides an auxiliary processing apparatus 20, please refer to... Figures 7 to 9 The auxiliary processing device 20 includes:

[0095] Roller 21, the surface of roller 21 is provided with a plurality of protrusions 23; and

[0096] Multiple blocking elements 22 are provided, each blocking element 22 is correspondingly disposed on the top of a protruding structure 23, and an electromagnet is disposed inside the protruding structure 23. When the electromagnet is energized, it can attract the blocking element 22.

[0097] The auxiliary processing device 20 in this embodiment is used for manufacturing a display panel, which has a blind hole area and a display area at least partially surrounding the blind hole area. The manufacturing process of the display panel includes the steps of "setting a shielding member 22 in a second preset area 103 that can be magnetically attracted to the adsorption plate 800" and "removing the shielding member 22" (refer to the manufacturing method of the display panel in the first aspect of this application).

[0098] In the step of "setting a shielding member 22 that can be magnetically attracted to the adsorption plate 800 in the second preset area 103", the roller 21 of the auxiliary processing device 20 can be rolled along the substrate 100. During the rolling of the roller 21, when the shielding member 22 comes into contact with the second organic layer group 500 in the second preset area 103 of the corresponding sub-plate 101, the electromagnet corresponding to the shielding member 22 is de-energized, so that the shielding member 22 is attached to the second organic layer group 500 by the attraction between it and the adsorption plate 800. As a result, each shielding member 22 can be attached to the second organic layer group 500 in the corresponding sub-plate 101 with high efficiency, thereby improving the manufacturing efficiency of the display panel.

[0099] In the step of "removing the obstruction member 22", the roller 21 of the auxiliary processing device 20 can be rolled along the substrate 100 and the electromagnets can be energized. Each electromagnet will contact and attract the obstruction member 22 in the corresponding sub-board 101. Thus, as the roller 21 continues to roll, the electromagnets can drive the corresponding obstruction member 22 to roll, thereby separating the obstruction member 22 from the second organic layer group 500 on the sub-board 101. As a result, the obstruction member 22 can be removed from each sub-board 101 with high efficiency, thereby removing the second cathode layer 700 in each sub-board 101, and thus improving the manufacturing efficiency of the display panel.

[0100] In some embodiments, the substrate 100 to be vapor-deposited includes a plurality of sub-plates 101 arranged in an array; the distance between two adjacent protrusions 23 along the axial direction of the roller 21 is equal to the distance between two adjacent sub-plates 101 in a first direction. The arc length between two adjacent protrusions 23 along the circumference of the roller 21 is equal to the distance between two adjacent sub-plates 101 in a second direction. The first direction is perpendicular to the second direction.

[0101] This configuration allows the roller 21 to roll one revolution in the second direction, enabling each protruding structure 23 to reach each of the second preset areas 103 on the sub-plate 101 in a one-to-one correspondence. This allows the shielding member 22 to be attached to the second organic layer group 500 in each sub-plate 101 in a one-to-one correspondence, or to remove the shielding member 22 attached to the second organic layer group 500 in each sub-plate 101 in a one-to-one correspondence.

[0102] In some embodiments, a groove is provided on the top of the protruding structure 23, and the blocking member 22 is disposed in the groove. Thus, the groove limits the blocking member 22, so that the blocking member 22 is at the top position of each protruding structure 23, so that each blocking member 22 can accurately reach the second preset area 103 in the corresponding sub-plate 101 during the rolling of the roller 21.

[0103] In some embodiments, the blocking member 22 is a magnetically conductive metal component. This allows the electromagnet to attract the blocking member 22 via magnetic force when energized, and for the magnetic force between the electromagnet and the blocking member 22 to disappear when the power is off.

[0104] In some embodiments, the shielding member 22 has a frustum-shaped structure. Thus, when the shielding member 22 is attached to the second organic layer group 500 and covers the second preset area 103, it helps to reduce the vapor deposition shadow at the edge of the blind hole area during the vapor deposition process, thereby improving the uniformity of the film thickness of the cathode layer around the blind hole area.

[0105] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0106] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for manufacturing a display panel, the display panel having a blind hole area and a display area at least partially surrounding the blind hole area, characterized in that, The manufacturing method comprises: providing a substrate, the substrate having a first preset area corresponding to the display area and a second preset area corresponding to the blind hole area; forming a pixel circuit and an anode layer on the first preset area of the substrate; forming a first organic layer group on the side of the anode layer away from the substrate and a second organic layer group on the second preset area of the substrate; providing an adsorption plate on the side of the substrate away from the pixel circuit and a shielding piece capable of being attracted to the adsorption plate by magnetism on the second preset area, the shielding piece being in contact with the second organic layer group and covering the second preset area in the thickness direction of the substrate; forming a first cathode layer on the side of the first organic layer group away from the anode layer and a second cathode layer on the side of the shielding piece away from the substrate; removing the shielding piece to remove the second cathode layer; the substrate comprises a plurality of sub-boards, each of the sub-boards having the first preset area and the second preset area; the step of providing the shielding piece capable of being attracted to the adsorption plate by magnetism on the second preset area comprises: providing an auxiliary processing device, the auxiliary processing device comprising a roller and a plurality of shielding pieces, the surface of the roller being provided with a plurality of protruding structures, each of the shielding pieces being provided on the top of one of the protruding structures, the inside of the protruding structure being provided with an electromagnet capable of attracting the shielding piece when energized; making the roller roll along the substrate, during the rolling of the roller, when the shielding piece is in contact with the second organic layer group in the second preset area of the corresponding sub-board, the electromagnet corresponding to the shielding piece is de-energized, so that the shielding piece is attached to the second organic layer group by the attraction force of the adsorption plate.

2. The manufacturing method of a display panel according to claim 1, wherein the adsorption plate is a magnet plate, and the shielding piece is a magnetic metal sheet; and / or, the first organic layer group comprises a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer and an electron injection layer arranged in layers, and the second organic layer group comprises a hole injection layer, a hole transport layer, an electron transport layer and an electron injection layer arranged in layers.

3. The manufacturing method of a display panel according to claim 2, wherein the step of removing the shielding piece comprises: making the roller roll along the substrate, during the rolling of the roller, the electromagnet is energized to make each electromagnet attract the corresponding shielding piece to separate the shielding piece from the second organic layer group.

4. The manufacturing method of a display panel according to claim 1, wherein the steps of forming the first organic layer group on the side of the anode layer away from the substrate and forming the second organic layer group on the second preset area of the substrate comprise: evaporating the material of the light emitting layer on the substrate by evaporation to evaporate the first organic layer group on the side of the anode layer away from the substrate and the second organic layer group on the second preset area of the substrate.

5. The method of manufacturing a display panel according to claim 1, wherein the steps of forming the first cathode layer on the side of the first organic layer group away from the anode layer and forming the second cathode layer on the side of the shielding piece away from the substrate comprise: A material of the cathode layer is evaporated on the substrate by evaporation to evaporate a first cathode layer on a side of the first organic layer group away from the anode layer and a second cathode layer on a side of the shielding member away from the substrate.

6. A display panel produced by the production method of the display panel according to any one of claims 1 to 5, characterized by The display panel has a blind hole area and a display area at least partially surrounding the blind hole area, and the display panel comprises: a substrate; a pixel circuit disposed on the substrate; a plurality of light emitting elements disposed in the display area, the light emitting elements comprising an anode layer, a first organic layer group, and a first cathode layer; and a second organic layer group disposed in the blind hole area.

7. An auxiliary machining device, characterized by It comprises: a roller, a surface of the roller being provided with a plurality of protruding structures; and a plurality of shielding members, each of the shielding members being correspondingly disposed on a top of one of the protruding structures, an electromagnet being disposed inside the protruding structure, the electromagnet being capable of attracting the shielding member when energized; The auxiliary processing device is configured to: when the shielding member capable of being attracted to the adsorption plate by magnetism is disposed in the second preset area, the roller rolls along the substrate; during the rolling of the roller, when the shielding member contacts the second organic layer group in the second preset area of the corresponding sub-board, the electromagnet corresponding to the shielding member is de-energized, so that the shielding member is attached to the second organic layer group by the attraction force of the adsorption plate.

8. The auxiliary machining device according to claim 7, characterized in that The substrate to be evaporated comprises a plurality of arrayed sub-boards; The distance between two adjacent protruding structures along the axis direction of the roller is equal to the distance between two adjacent sub-boards in the first direction, and the arc length between two adjacent protruding structures along the circumferential direction of the roller is equal to the distance between two adjacent sub-boards in the second direction, the first direction being perpendicular to the second direction.

9. The auxiliary machining device according to claim 7, characterized in that The top of the protruding structure is provided with a groove, and the shielding member is disposed in the groove.

10. The auxiliary machining device according to claim 7, characterized in that The shielding member is a magnetically conductive metal member.

11. The auxiliary machining device according to claim 7, characterized in that The shielding member is a circular truncated cone structure.

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