Method for manufacturing display screen, display screen and display screen preparation

Abstract

The application discloses a display screen preparation method, a display screen and a preliminary display screen. The preparation method comprises the following steps: providing a substrate; forming a light-emitting layer on one side of the substrate, wherein the light-emitting layer comprises a plurality of light-emitting units arranged in an array, and the plurality of light-emitting units are used for emitting light; forming an encapsulation layer on the side of the light-emitting layer away from the substrate, wherein the encapsulation layer covers the plurality of light-emitting units, and the encapsulation layer is used for encapsulating the plurality of light-emitting units; forming a touch function layer on the side of the encapsulation layer away from the substrate, wherein the touch function layer is used for transmitting a touch signal; forming an anti-fouling protective layer on the side of the touch function layer away from the substrate, thereby forming a preliminary display structure; cutting the preliminary display structure to form a plurality of preliminary display screens; processing the preliminary display screens to remove contaminants on the surfaces of the preliminary display screens; and forming a polaroid on the preliminary display screens, wherein the polaroid is used for adjusting the light emitted by the light-emitting units.

Description

Technical Field

[0001] This application belongs to the field of display technology, and in particular relates to a method for manufacturing a display screen, a display screen, and a pre-display screen. 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 OLED display products needs to be improved. Summary of the Invention

[0004] The purpose of this application is to provide a method for manufacturing a display screen, a display screen, and a pre-display screen, which can improve the performance of the display screen.

[0005] The first aspect of this application provides a method for manufacturing a display screen, comprising:

[0006] Provide a substrate;

[0007] A light-emitting layer is formed on one side of the substrate. The light-emitting layer includes multiple light-emitting units, which are arranged in an array and are used to emit light.

[0008] An encapsulation layer is formed on the side of the light-emitting layer away from the substrate. The encapsulation layer covers multiple light-emitting units and is used to encapsulate the multiple light-emitting units.

[0009] A touch function layer is formed on the side of the encapsulation layer away from the substrate. The touch function layer is used to transmit touch signals.

[0010] An anti-fouling protective layer is formed on the side of the touch function layer away from the substrate, forming a pre-display structure;

[0011] The pre-display structure is cut to form multiple pre-display screens;

[0012] The pre-display screen is treated to remove contaminants from its surface;

[0013] A polarizer is formed on the pre-display screen. The polarizer is used to adjust the light emitted by the light-emitting unit.

[0014] In some embodiments, the step of processing the pre-display screen to remove contaminants from its surface includes:

[0015] Remove the anti-fouling protective layer;

[0016] Preferably, the step of forming a polarizer on the pre-display screen includes:

[0017] A polarizer is formed on the side of the touch function layer that is away from the substrate;

[0018] Preferably, in the step of removing the antifouling protective layer, a plasma treatment process is used to remove the antifouling protective layer.

[0019] In some embodiments, the step of processing the pre-display screen to remove contaminants from its surface includes:

[0020] Remove contaminants from the surface of the anti-fouling protective layer facing away from the substrate;

[0021] Preferably, the step of forming a polarizer on the pre-display screen includes:

[0022] A polarizer is formed on the side of the anti-fouling protective layer that faces away from the substrate;

[0023] Preferably, in the step of forming an anti-fouling protective layer on the side of the touch functional layer away from the substrate, the surface of the anti-fouling protective layer on the side away from the substrate includes a velvety structure.

[0024] Preferably, after the step of removing contaminants from the surface of the anti-fouling protective layer facing away from the substrate, the method further includes:

[0025] Remove part of the anti-fouling protective layer;

[0026] Preferably, the step of removing part of the antifouling protective layer includes: removing at least a portion of the pile structure.

[0027] In some embodiments, the material of the antifouling protective layer includes organic materials;

[0028] Preferably, the material of the antifouling protective layer includes a hydrophobic material;

[0029] Preferably, the material of the antifouling protective layer includes at least one of fluorides and silanes;

[0030] Preferably, the thickness H1 of the antifouling protective layer satisfies: 5 nanometers ≤ H1 ≤ 20 nanometers.

[0031] In some embodiments, before forming an anti-fouling protective layer on the side of the touch functional layer facing away from the substrate, the method further includes:

[0032] A planarization layer is formed on the side of the touch function layer that is away from the substrate;

[0033] Preferably, the coefficient of dynamic friction of the surface of the antifouling protective layer facing away from the substrate is less than the coefficient of dynamic friction of the surface of the planarization layer facing away from the substrate.

[0034] Preferably, the coefficient of dynamic friction μ of the antifouling protective layer on the side facing away from the substrate satisfies: 0.02≤μ≤0.1.

[0035] In some embodiments, in the step of forming an anti-fouling protective layer on the side of the touch functional layer away from the substrate, the anti-fouling protective layer is provided as a single layer.

[0036] Preferably, the display screen includes a display area and a non-display area, with a portion of the anti-fouling protective layer located in the display area and another portion located in the non-display area.

[0037] In some embodiments, the step of forming a polarizer on a pre-display screen includes:

[0038] Provide a polarizer;

[0039] Transfer the polarizer to the pre-display screen, and connect the polarizer to the pre-display screen;

[0040] Preferably, in the step of transferring the polarizer to the pre-display screen and connecting the polarizer to the pre-display screen, the polarizer is bonded to the pre-display screen.

[0041] In some embodiments, after the step of forming polarizers on each of the pre-display screens, the method further includes:

[0042] A cover plate is formed on the side of the polarizer away from the substrate to form a display screen;

[0043] Preferably, the cover plate is made of a light-transmitting material;

[0044] Preferably, before the step of forming a cover plate on the side of the polarizer facing away from the substrate, the method further includes:

[0045] A bonding adhesive layer is formed on the side of the polarizer away from the substrate.

[0046] A second aspect of this application provides a display screen, which is prepared using any of the above-described preparation methods.

[0047] A third aspect of this application provides a pre-display panel, including a substrate, a light-emitting layer, an encapsulation layer, a touch functional layer, and a dirt-resistant protective layer. The light-emitting layer is disposed on one side of the substrate and includes multiple light-emitting units arranged in an array. The multiple light-emitting units are used to emit light. The encapsulation layer is disposed on the side of the light-emitting units away from the substrate and covers the multiple light-emitting units. The encapsulation layer is used to encapsulate the multiple light-emitting units. The touch functional layer is disposed on the side of the encapsulation layer away from the substrate and is used to transmit touch signals. The dirt-resistant protective layer is disposed on the side of the touch functional layer away from the substrate.

[0048] In some embodiments, the surface of the antifouling protective layer opposite to the substrate includes a velvety structure;

[0049] Preferably, the material of the antifouling protective layer includes at least one of fluorides and silanes;

[0050] Preferably, the thickness H1 of the antifouling protective layer satisfies: 5 nanometers ≤ H1 ≤ 20 nanometers;

[0051] Preferably, the coefficient of dynamic friction μ of the antifouling protective layer on the side facing away from the substrate satisfies: 0.02≤μ≤0.1.

[0052] This application provides a method for manufacturing a display screen, a display screen, and a pre-display screen. In the manufacturing method, a light-emitting layer is first formed on one side of a substrate. The light-emitting layer includes multiple light-emitting units arranged in an array. Then, an encapsulation layer is formed on the side of the light-emitting layer facing away from the substrate, covering the multiple light-emitting units and encapsulating them. Next, a touch function layer is formed on the side of the encapsulation layer facing away from the substrate for transmitting touch signals. Then, an anti-fouling protective layer is formed on the side of the touch function layer facing away from the substrate to form a pre-display structure. The pre-display structure is then cut into multiple pre-display screens, and the pre-display screens are processed to remove contaminants from their surfaces. This allows a polarizer to be formed on the relatively clean surface of the pre-display screen, improving the yield and quality of the polarizer and enhancing the performance of the display screen. Furthermore, in the aforementioned process, the anti-fouling protective layer protects the touch function layer and its underlying film layer from contamination during the cutting process of the pre-display structure, preventing contaminants from directly adhering to the surface of the touch function layer. This reduces the difficulty of contaminant removal and minimizes the impact of contaminant removal on the touch function layer and its underlying film layer, further improving the performance of the display screen. Attached Figure Description

[0053] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 A flowchart illustrating a method for manufacturing a display screen according to some embodiments of this application;

[0055] Figure 2 A cross-sectional schematic diagram of a display screen provided for some embodiments of this application;

[0056] Figure 3 A cross-sectional schematic diagram of a display screen provided for other embodiments of this application;

[0057] Figure 4 A top view of the pre-display structure during the manufacturing process of a display screen provided in some embodiments of this application;

[0058] Figure 5 Another flowchart illustrating a method for manufacturing a display screen provided in some embodiments of this application;

[0059] Figure 6 Flowcharts illustrating methods for manufacturing displays provided in other embodiments of this application;

[0060] Figure 7 Structural diagrams of the materials used in the antifouling protective layer of the display screen provided in some embodiments of this application;

[0061] Figure 8 A flowchart illustrating a method for manufacturing a display screen according to some embodiments of this application;

[0062] Figure 9 Another cross-sectional view of the display screen provided in some embodiments of this application;

[0063] Figure 10 This application also includes flowcharts of methods for manufacturing displays provided in some embodiments;

[0064] Figure 11 A flowchart illustrating a method for manufacturing a display screen provided in some embodiments of this application;

[0065] Figure 12 This is a cross-sectional schematic diagram of a pre-display screen provided for some embodiments of this application.

[0066] The attached icons are numbered as follows:

[0067] Substrate 10; Light-emitting layer 20; Encapsulation layer 30; Touch function layer 40; Anti-fouling protective layer 50; Polarizing film 60; Planarization layer 70; Cover plate 80; Adhesive layer 90;

[0068] Preparatory display structure 100; Preparatory display screen 200. Detailed Implementation

[0069] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0070] 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," and "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," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0071] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0072] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0073] Through long-term research, the inventors discovered that in the fabrication process of some displays, multiple displays are typically fabricated simultaneously. For example, multiple film structures corresponding to the displays can be formed on one side of a substrate to constitute a preliminary display structure. This preliminary display structure is then cut to form multiple preliminary displays, which are subsequently processed to form multiple displays. Currently, the aforementioned cutting process is usually performed after the touch function layer is formed and before the polarizer is formed. During the cutting process, contaminants may adhere to the preliminary display structure. If these contaminants are wiped away, the external force applied during wiping may severely affect the touch function layer and the underlying film layer of the preliminary display. If these contaminants are not treated, their presence may affect the yield and quality of the subsequent polarizer fabrication, leading to a reduction in the performance of the display.

[0074] To address at least some of the above problems, embodiments of this application provide a method for manufacturing a display screen, a display screen, and a pre-display screen. The method for manufacturing the display screen will first be described in conjunction with the accompanying drawings.

[0075] Please refer to the following: Figures 1-4 The first aspect of this application provides a method for manufacturing a display screen, comprising:

[0076] S10, Provide a substrate 10.

[0077] The substrate 10 includes a substrate and a driving circuit layer disposed on the substrate. The substrate can be a rigid substrate made of materials such as glass or plastic, or a flexible substrate made of materials such as polyethersulfone (PES), polyacrylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyarylate, polyimide (PI), polycarbonate (PC), or cellulose acetate propionate (CAP). The driving circuit layer contains a driving circuit for controlling the light emission of the light-emitting unit. The driving circuit layer is generally composed of inorganic film layers such as a metal layer, a semiconductor layer (active layer), and an insulating layer. By patterning these inorganic film layers, a driving circuit for controlling the light emission of the light-emitting unit can be formed. There are various ways to implement the specific circuit structure, which will not be elaborated here.

[0078] S20. A light-emitting layer 20 is formed on one side of the substrate 10. The light-emitting layer 20 includes multiple light-emitting units, which are arranged in an array and used to emit light.

[0079] Optionally, step S20 may include:

[0080] A light-emitting material layer is formed on one side of the substrate 10. The light-emitting material layer can be disposed as a single layer on one side of the substrate 10, and the light-emitting material layer can be formed by processes such as evaporation and deposition.

[0081] The luminescent material layer is patterned to form the luminescent layer 20. The luminescent material layer can be patterned by processes such as etching, and this embodiment does not limit this process.

[0082] In the light-emitting layer 20, multiple light-emitting units may include light-emitting units with different emitting colors. For example, the multiple light-emitting units may include red light-emitting units, green light-emitting units, and blue light-emitting units. Each light-emitting unit may include a first electrode, a light-emitting functional layer, and a second electrode arranged sequentially along a direction away from the substrate 10. One of the first electrode and the second electrode may serve as an anode after being energized, and the other may serve as a cathode after being energized.

[0083] The light-emitting functional layer can be formed by stacking various film layer structures. For example, the light-emitting functional layer may include a hole injection layer (HIL), a hole transport layer (HTL), a light-emitting sub-functional layer, an electron injection layer (EIL), and an electron transport layer (ETL) stacked together.

[0084] S30. An encapsulation layer 30 is formed on the side of the light-emitting layer 20 away from the substrate 10. The encapsulation layer 30 covers multiple light-emitting units and is used to encapsulate the multiple light-emitting units.

[0085] The encapsulation layer 30 is disposed as a single layer on the side of the light-emitting layer 20 facing away from the substrate 10, to cover each light-emitting unit and thereby encapsulate each light-emitting unit. The encapsulation layer 30 can be a single film layer or formed by stacking multiple film layers. After the encapsulation layer 30 is formed, the substrate 10, the light-emitting layer 20, the encapsulation layer 30, and other film layers between any two of the aforementioned film layers can constitute a display panel. In the embodiments of this application, the display panel can be an organic light-emitting diode (OLED) display panel, or it can be other types of display panels, such as micro light-emitting diode (Micro-LED) or quantum light-emitting diode (QLED) display panels.

[0086] Optionally, the encapsulation layer 30 may include a first encapsulation sublayer, a second encapsulation sublayer, and a third encapsulation sublayer stacked sequentially along a direction away from the substrate 10. In step S30, the first encapsulation sublayer, the second encapsulation sublayer, and the third encapsulation sublayer may be formed sequentially on the side of the light-emitting layer 20 away from the substrate 10. The first encapsulation sublayer, the second encapsulation sublayer, and the third encapsulation sublayer can encapsulate the light-emitting unit respectively, thereby reducing the risk of impurities such as moisture intruding into the light-emitting unit.

[0087] Optionally, the first encapsulation sublayer may include inorganic materials, such as silicon oxide, silicon nitride, or silicon oxynitride, which can provide good mechanical support and encapsulation protection. At the same time, the first encapsulation sublayer can also effectively isolate harmful substances such as moisture and oxygen from the outside from entering the light-emitting unit, thereby improving the service life and stability of the display screen.

[0088] Optionally, the second encapsulation layer may include organic materials. For example, the second encapsulation layer may be made of organic materials such as polymers. The second encapsulation layer is more flexible, so it can better adapt to the bending and curvature of the display screen and can also buffer external forces.

[0089] Optionally, the third encapsulation sublayer may include inorganic materials that can provide good mechanical support and encapsulation protection, while also further isolating harmful substances such as moisture and oxygen from the outside from entering the light-emitting unit.

[0090] S40. A touch function layer 40 is formed on the side of the encapsulation layer 30 opposite to the substrate 10. The touch function layer 40 is used to transmit touch signals. The touch function layer 40 may include touch electrodes, which can transmit touch signals within the display screen, thereby realizing touch display of the display screen.

[0091] S50. A dirt-resistant protective layer 50 is formed on the side of the touch function layer 40 away from the substrate 10, forming a pre-display structure 100.

[0092] The anti-fouling protective layer 50 can be formed through processes such as vapor deposition, deposition, and coating; this embodiment does not limit this process. The anti-fouling protective layer 50 covering at least a portion of the touch functional layer 40 can mean that the anti-fouling protective layer 50 is a single layer on the side of the touch functional layer 40 facing away from the substrate 10, covering the entire area of ​​the touch functional layer 40, or it can mean that the anti-fouling protective layer 50 covers a portion of the touch functional layer 40. The anti-fouling protective layer 50 can protect at least a portion of the touch functional layer 40, preventing contaminants from directly contacting the touch functional layer 40. The pre-display structure 100 can be composed of the substrate 10, the light-emitting layer 20, the encapsulation layer 30, the touch functional layer 40, the anti-fouling layer, and other film layers between any two of the aforementioned film layers. The pre-display structure 100 is a semi-finished structure in the manufacturing process of the display screen. After forming the pre-display structure 100, further processing of the pre-display structure can ultimately form multiple display screens.

[0093] S60. Cut the pre-display structure 100 to form multiple pre-display screens 200.

[0094] The pre-display screen 200 is a semi-finished structure in the manufacturing process of the display screen. Multiple pre-display screens 200 can be ultimately combined into multiple display screens after subsequent processing. The structures of each pre-display screen 200 can be the same. Multiple pre-display screens 200 are formed by cutting the aforementioned pre-display structure 100. Therefore, the film layer structure of each pre-display screen 200 is the same as that of the aforementioned pre-display structure 100. It is also composed of a substrate 10, a light-emitting layer 20, an encapsulation layer 30, a touch function layer 40, an anti-fouling layer, and other film layers between any two of the aforementioned film layers.

[0095] S70. Process the pre-display screen 200 to remove contaminants from the surface of the pre-display screen 200.

[0096] Specifically, processing the pre-display screen 200 may include processing the anti-fouling protective layer 50 of the pre-display screen 200 to remove contaminants from the surface of the anti-fouling protective layer 50. For example, the surface of the anti-fouling protective layer 50 facing away from the substrate 10 may be wiped to remove contaminants from the surface of the anti-fouling protective layer 50 facing away from the substrate 10, retaining the anti-fouling protective layer 50, forming a... Figure 2 The display screen shown. Alternatively, the anti-fouling protective layer 50 can be removed directly, thereby simultaneously removing contaminants from the surface of the anti-fouling protective layer 50, forming a layer as shown. Figure 3 The display screen shown.

[0097] S80. A polarizer 60 is formed on the pre-display screen 200. The polarizer 60 is used to adjust the light emitted by the light-emitting unit.

[0098] Specifically, when the anti-fouling protective layer 50 is removed in step S70, the polarizer 60 can be disposed on the side surface of the touch functional layer 40 facing away from the substrate 10. When the anti-fouling protective layer 50 is not completely removed in step S70, the touch functional layer 40 can be disposed on the side surface of the anti-fouling protective layer 50 facing away from the substrate 10. In step S80, the polarizer 60 can be formed on the pre-display screen 200, or a pre-formed polarizer 60 can be transferred to the pre-display screen 200. This embodiment does not limit this.

[0099] In this embodiment, a light-emitting layer 20 is first formed on one side of the substrate 10. The light-emitting layer 20 includes multiple light-emitting units arranged in an array. Light is emitted by each light-emitting unit, enabling image display on the screen. Subsequently, an encapsulation layer 30 is formed on the side of the light-emitting layer 20 facing away from the substrate 10. The encapsulation layer 30 covers the multiple light-emitting units, providing encapsulation protection to reduce the risk of moisture and other impurities from the external environment intruding into the light-emitting units and affecting their performance and lifespan. Then, a touch function layer 40 is formed on the side of the encapsulation layer 30 facing away from the substrate 10, enabling touch display on the screen. Subsequently, an anti-fouling protective layer 50 is formed on the side of the touch function layer 40 away from the substrate 10, thus forming a pre-display structure 100. The pre-display structure 100 is then cut to form multiple pre-display screens 200. Each pre-display screen 200 includes the aforementioned substrate 10, light-emitting layer 20, encapsulation layer 30, touch function layer 40, and other film layer structures. After cutting, the pre-display screens 200 are processed to remove contaminants remaining on their surface during the cutting process. Then, a polarizer 60 is formed on the pre-display screens 200 to adjust the light emitted by the light-emitting unit and improve the display effect of the screen.

[0100] In the aforementioned manufacturing process of the display screen, the anti-fouling protective layer 50 provides anti-fouling protection for the touch functional layer 40 and its underlying film layer during the process of cutting the pre-display structure 100 into multiple pre-display screens 200. This prevents contaminants from directly adhering to the surface of the touch functional layer 40, reducing the difficulty of contaminant removal and minimizing the impact of external forces on the touch functional layer 40 and its underlying film layer during contaminant removal. For example, it can reduce the impact of such external forces on the encapsulation layer 30, lowering the risk of the encapsulation layer 30 collapsing and affecting the encapsulation effect, and improving the performance of the display screen. Furthermore, before forming the polarizer 60, the pre-display screen 200 is treated to remove the anti-fouling protective layer 50 or contaminants adhering to its surface. This allows the polarizer 60 to be formed on a relatively clean pre-display screen 200, improving the yield and quality of the polarizer 60 and enhancing the performance of the display screen.

[0101] In some optional embodiments, prior to step S20, the following steps are also included:

[0102] A pixel defining layer is formed on one side of the substrate 10. The pixel defining layer includes a pixel defining portion and a plurality of pixel openings formed by the pixel defining portion. The pixel openings are used to accommodate light-emitting units.

[0103] In step S20, at least a portion of the light-emitting unit is located within the pixel opening.

[0104] By placing each light-emitting unit in the opening of each pixel, the pixel limiting part can isolate two adjacent light-emitting units, thereby reducing crosstalk between each light-emitting unit.

[0105] Please see Figure 5 In some embodiments, the step of processing the pre-display screen 200 to remove contaminants from its surface includes:

[0106] S71. Remove the anti-fouling protective layer 50. There are various methods to remove the anti-fouling protective layer 50, such as plasma cleaning, stripping, or etching. This embodiment does not limit the method used. The display screen formed after removing the anti-fouling protective layer 50 is as follows: Figure 3 As shown.

[0107] This embodiment uses the method of directly removing the anti-fouling protective layer 50 to remove contaminants, which can reduce the impact of external force on the touch function layer 40 and the film layer below it during the contaminant removal process, and reduce the risk of damage to the touch function layer 40 and the film layer below it.

[0108] Preferably, the step of forming the polarizer 60 on the pre-display screen 200 includes:

[0109] S81. A polarizer 60 is formed on the side of the touch function layer 40 away from the substrate 10.

[0110] In these embodiments, after the pre-display structure 100 is cut into a plurality of pre-display screens 200, each pre-display screen 200 can be processed to remove the anti-fouling protective layer 50 in each pre-display screen 200, thereby removing contaminants that adhered to the side of the touch functional layer 40 away from the substrate 10 during the cutting process. Subsequently, a polarizer 60 is formed on the relatively clean side of the touch functional layer 40 away from the substrate 10, which helps to improve the preparation yield and quality of the polarizer 60.

[0111] Preferably, in the step of removing the anti-fouling protective layer 50, a plasma treatment process is used to remove the anti-fouling protective layer 50. The plasma treatment process utilizes the physical bombardment or chemical reaction of high-energy plasma to remove the anti-fouling protective layer 50, which helps to improve the removal accuracy of the anti-fouling protective layer 50 and can avoid physical contact with the film layers such as the touch function layer 40 below the anti-fouling protective layer 50, thus avoiding damage to the aforementioned film layers and further improving the performance of the display screen.

[0112] Please see Figure 6 In some embodiments, the step of processing the pre-display screen 200 to remove contaminants from its surface includes:

[0113] S72. Remove contaminants from the surface of the anti-fouling protective layer 50 away from the substrate 10.

[0114] In step S72, contaminants on the surface of the anti-fouling protective layer 50 facing away from the substrate 10 are removed, and the anti-fouling protective layer 50 remains on the side of the touch functional layer 40 facing away from the substrate 10, forming as shown in the figure. Figure 2 The display screen shown.

[0115] Preferably, the step of forming the polarizer 60 on the pre-display screen 200 includes:

[0116] S82. A polarizer 60 is formed on the side of the anti-fouling protective layer 50 away from the substrate 10.

[0117] In these embodiments, after the pre-display structure 100 is cut into a plurality of pre-display screens 200, each pre-display screen 200 can be processed to remove contaminants attached to the surface of the anti-fouling protective layer 50 on the side away from the substrate 10, while retaining the anti-fouling protective layer 50. Subsequently, a polarizer 60 is formed on the relatively clean side of the anti-fouling protective layer 50 away from the substrate 10, which can reduce the difficulty of removing contaminants while improving the preparation yield and quality of the polarizer 60.

[0118] Preferably, in the step of forming an anti-fouling protective layer 50 on the side of the touch function layer 40 away from the substrate 10, the surface of the anti-fouling protective layer 50 on the side away from the substrate 10 includes a velvety structure.

[0119] The formation of the velvety structure gives the surface of the anti-fouling protective layer 50 facing away from the substrate 10 a lotus-leaf-like effect, making the surface superhydrophobic. During the cutting process of the pre-display structure 100, the contaminants will come into contact with the tip of the velvety structure, which can effectively reduce the contact area between the contaminants and the anti-fouling protective layer 50, reduce the adhesion of the contaminants to the anti-fouling protective layer 50, and thus reduce the difficulty of removing the contaminants.

[0120] For example, in the step of processing the pre-display screen 200 to remove contaminants from the surface of the pre-display screen 200, if the contaminants are removed by wiping, the velvety structure helps to increase the wiping force and reduce the impact of the wiping force on the film layer under the anti-fouling protective layer 50.

[0121] Preferably, after the step of removing contaminants from the surface of the anti-fouling protective layer 50 facing away from the substrate 10, the method further includes: removing a portion of the anti-fouling protective layer 50.

[0122] In these embodiments, after removing contaminants from the surface of the antifouling protective layer 50 facing away from the substrate 10, a portion of the antifouling protective layer 50 may be removed to reduce the impact of the antifouling protective layer 50 on the subsequent film structure.

[0123] Preferably, the step of removing part of the antifouling protective layer 50 includes removing at least a portion of the velvet structure. After the contaminants are removed, at least a portion of the velvet structure can be removed, which can reduce the impact of the velvet structure on subsequent structures such as the polarizer 60.

[0124] Preferably, the anti-fouling protective layer 50 includes a light-transmitting material, so that when the anti-fouling protective layer 50 remains inside the display screen and is not completely removed, the light emitted by the light-emitting unit can pass through the anti-fouling protective layer 50 and exit the display screen.

[0125] In some embodiments, the antifouling protective layer 50 is made of organic materials, which helps to reduce the difficulty of removing the antifouling protective layer 50.

[0126] Preferably, the antifouling protective layer 50 is made of a hydrophobic material. The hydrophobic material has hydrophobic properties, which can reduce the adhesion of contaminants to the surface of the antifouling protective layer 50 opposite to the substrate 10, thereby reducing the difficulty of removing contaminants.

[0127] Preferably, the material of the antifouling protective layer 50 includes at least one of fluorides and silanes, thereby giving the antifouling protective layer 50 good hydrophobic properties to further reduce the adhesion of contaminants on the surface of the antifouling protective layer 50 away from the substrate 10.

[0128] Taking the antifouling protective layer 50 as an example, which includes fluorides, such as Figure 7 As shown, protected by the spatial shielding effect of fluorine atoms, the carbon-fluorine bonds in fluorides are not easily invaded by other atoms, thus forming a more stable structure to resist the erosion of external pollutants and reduce the adhesion of pollutants on the surface of the anti-fouling protective layer 50 away from the substrate 10.

[0129] Please continue reading. Figure 2 Preferably, the thickness H1 of the antifouling protective layer 50 satisfies: 5 nanometers ≤ H1 ≤ 20 nanometers.

[0130] As an example, the thickness of the antifouling protective layer 50 may be 5 nanometers, 8 nanometers, 10 nanometers, 13 nanometers, 15 nanometers, 17 nanometers, 20 nanometers, or any other value between any two of the aforementioned values.

[0131] This application embodiment optimizes the thickness of the anti-fouling protective layer 50, thereby improving the anti-fouling protection effect of the anti-fouling protective layer 50 on the touch function layer 40 and the underlying film layer, while reducing the impact of the anti-fouling protective layer 50 on the performance of the display screen.

[0132] Please see Figure 8 and Figure 9 In some embodiments, before the anti-fouling protective layer 50 is formed on the side of the touch functional layer 40 opposite to the substrate 10, the following is also included:

[0133] S90, A planarization layer 70 is formed on the side of the touch function layer 40 away from the substrate 10.

[0134] The anti-fouling protective layer 50 is formed on the side surface of the planarization layer 70 facing away from the substrate 10. The planarization layer 70 can fill the pits on the side surface of the touch function layer 40 facing away from the substrate 10, making the side surface of the touch function layer 40 facing away from the substrate 10 flat. This allows structures such as the anti-fouling protective layer 50 and the polarizer 60 to be formed on a flat surface, thereby helping to improve the performance of the display screen.

[0135] It is understandable that when the anti-fouling protective layer 50 is formed on a flat surface, it helps to improve the flatness of the side surface of the anti-fouling protective layer 50 away from the substrate 10, thereby helping to reduce the contact area between the side surface of the anti-fouling protective layer 50 away from the substrate 10 and the contaminants, reducing the adhesion of the contaminants on the side surface of the anti-fouling protective layer 50 away from the substrate 10, and reducing the difficulty of removing the contaminants.

[0136] Preferably, the coefficient of dynamic friction of the surface of the anti-fouling protective layer 50 facing away from the substrate 10 is less than the coefficient of dynamic friction of the surface of the planarization layer 70 facing away from the substrate 10. Therefore, compared with cutting the pre-display structure 100 directly after the planarization layer 70 is formed, the provision of the anti-fouling protective layer 50 helps to reduce the adhesion of contaminants and reduce the difficulty of removing contaminants.

[0137] Preferably, the coefficient of dynamic friction μ of the surface of the anti-fouling protective layer 50 facing away from the substrate 10 satisfies: 0.02≤μ≤0.1.

[0138] As an example, the coefficient of dynamic friction of the surface of the antifouling protective layer 50 facing away from the substrate 10 can be 0.02, 0.03, 0.05, 0.06, 0.08, 0.1 or any other value between any two of the aforementioned values.

[0139] In these embodiments, by optimizing the dynamic friction coefficient of the surface of the antifouling protective layer 50 away from the substrate 10, it is helpful to further reduce the adhesion of contaminants on the surface of the antifouling protective layer 50 away from the substrate 10, thereby reducing the difficulty of removing contaminants.

[0140] In some embodiments, in the step of forming an anti-fouling protective layer 50 on the side of the touch functional layer 40 facing away from the substrate 10, the anti-fouling protective layer 50 is formed as a single layer. The anti-fouling protective layer 50 formed as a single layer can provide comprehensive protection for the touch functional layer 40 below, thereby improving the anti-fouling effect.

[0141] Preferably, the display screen includes a display area and a non-display area, with a portion of the anti-fouling protective layer 50 located in the display area and another portion located in the non-display area, to improve the comprehensiveness of the anti-fouling protective layer 50 in protecting the underlying film layer.

[0142] Please see Figure 10 In some embodiments, the step of forming a polarizer 60 on the pre-display 200 includes:

[0143] S83, Provide a polarizer 60.

[0144] S84. Transfer the polarizer 60 to the pre-display screen 200, and connect the polarizer 60 to the pre-display screen 200.

[0145] In these embodiments, the pre-prepared polarizer 60 is transferred to the pre-display screen 200 and connected to the pre-display screen 200. Compared with preparing the polarizer 60 directly on the pre-display screen 200, this helps to improve the production efficiency of the display screen and also avoids the polarizer 60 preparation process affecting the performance of the underlying film layer.

[0146] Preferably, in the step of transferring the polarizer 60 to the pre-display screen 200 and connecting the polarizer 60 to the pre-display screen 200, the polarizer 60 is bonded to the pre-display screen 200.

[0147] Specifically, the polarizer 60 may include an adhesive layer. When the polarizer 60 is transferred to the pre-display screen 200, the adhesive layer may be located on the side of the polarizer 60 facing the pre-display screen 200, thereby achieving adhesive connection between the pre-display screen 200 and the polarizer 60 through the adhesive layer, thereby improving the stability and reliability of the polarizer 60.

[0148] Please see Figure 9 and Figure 11 In some embodiments, after the step of forming the polarizer 60 on each pre-display screen 200, the method further includes:

[0149] S100, a cover plate 80 is formed on the side of the polarizer 60 away from the substrate 10 to form a display screen.

[0150] The cover plate 80 can protect the light-emitting layer 20, the touch function layer 40 and the polarizer 60, which helps to improve the service life of the display screen.

[0151] Preferably, the cover plate 80 is made of a light-transmitting material. The light emitted by the light-emitting unit can pass through the cover plate 80 and exit to the outside of the display screen, thereby realizing image display.

[0152] Preferably, before the step of forming the cover plate 80 on the side of the polarizer 60 facing away from the substrate 10, the method further includes:

[0153] A bonding adhesive layer 90 is formed on the side of the polarizer 60 facing away from the substrate 10. For example... Figure 9 As shown, the adhesive layer 90 can be used to bond the polarizer 60 and the cover plate 80, thereby improving the stability and reliability of the cover plate 80.

[0154] A second aspect of this application provides a display screen, which is prepared using any of the above-described preparation methods.

[0155] Please see Figure 12The third aspect of this application provides a pre-display screen 200, including a substrate 10, a light-emitting layer 20, an encapsulation layer 30, a touch function layer 40, and a dirt-proof protective layer 50. The light-emitting layer 20 is disposed on one side of the substrate 10 and includes a plurality of light-emitting units arranged in an array. The plurality of light-emitting units are used to emit light. The encapsulation layer 30 is disposed on the side of the light-emitting units away from the substrate 10 and covers the plurality of light-emitting units. The encapsulation layer 30 is used to encapsulate the plurality of light-emitting units. The touch function layer 40 is disposed on the side of the encapsulation layer 30 away from the substrate 10 and is used to transmit touch signals. The dirt-proof protective layer 50 is disposed on the side of the touch function layer 40 away from the substrate 10.

[0156] The pre-display screen 200 is a semi-finished structure in the display screen manufacturing process. The pre-display screen 200 is composed of, for example... Figure 4 The pre-display structure 100 shown is formed by cutting. The anti-fouling protective layer 50 of the pre-display 200 can protect the touch function layer 40 and its underlying film layer from contamination during the cutting process. Furthermore, the anti-fouling protective layer 50 can also protect the touch function layer 40 and its underlying film layer from contamination during the sale of the pre-display 200 or in other processes, thereby preventing contaminants from directly adhering to the surface of the touch function layer 40. This helps to reduce the difficulty of removing contaminants and reduce the impact of external forces on the touch function layer 40 and its underlying film layer during the contaminant removal process. For example, it can reduce the impact of such external forces on the encapsulation layer 30, reduce the risk that the encapsulation layer 30 will collapse and affect the encapsulation effect, and improve the performance of the display screen.

[0157] Furthermore, before forming the polarizer 60, the surface of the anti-fouling protective layer of the pre-display 200 can be treated to remove the anti-fouling protective layer 50 or remove contaminants attached to the surface of the anti-fouling protective layer 50, so as to form the polarizer 60 on the relatively clean pre-display 200. This helps to improve the preparation yield and quality of the polarizer 60 and enhance the performance of the display.

[0158] In some embodiments, the surface of the antifouling protective layer 50 on the side opposite to the substrate 10 includes a velvety structure.

[0159] Preferably, the material of the antifouling protective layer 50 includes at least one of fluorides and silanes.

[0160] Preferably, the thickness H1 of the antifouling protective layer 50 satisfies: 5 nanometers ≤ H1 ≤ 20 nanometers.

[0161] Preferably, the coefficient of dynamic friction μ of the anti-fouling protective layer 50 on the side of the substrate facing away from the substrate satisfies: 0.02≤μ≤0.1.

[0162] A fourth aspect of this application provides a display device including the aforementioned display screen. Since this display device employs all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0163] The display device can be any device with display function, such as mobile devices such as mobile phones, tablets, laptops, handheld computers, in-vehicle electronic devices, wearable devices, ultra-mobile personal computers (UMPCs), netbooks, or personal digital assistants (PDAs), as well as non-mobile devices such as personal computers (PCs), televisions (TVs), ATMs, or self-service machines.

[0164] While the embodiments disclosed in this application are as described above, the content is merely for the purpose of facilitating understanding of this application and is not intended to limit the invention. Any person skilled in the art to which this application pertains may make any modifications and changes in form and detail of the implementation without departing from the spirit and scope disclosed in this application; however, the scope of protection of this application shall still be determined by the scope defined in the appended claims.

[0165] The above description is merely a specific embodiment of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, substitutions for other connection methods described above can be made by referring to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application.

Claims

1. A method for manufacturing a display screen, characterized in that, include: Provide a substrate; A light-emitting layer is formed on one side of the substrate. The light-emitting layer includes a plurality of light-emitting units arranged in an array. The plurality of light-emitting units are used to emit light. An encapsulation layer is formed on the side of the light-emitting layer opposite to the substrate, the encapsulation layer covers the plurality of light-emitting units, and the encapsulation layer is used to encapsulate the plurality of light-emitting units; A touch function layer is formed on the side of the encapsulation layer opposite to the substrate, and the touch function layer is used to transmit touch signals; An anti-fouling protective layer is formed on the side of the touch function layer opposite to the substrate, forming a pre-display structure; The pre-display structure is cut to form multiple pre-display screens; The pre-display screen is processed to remove contaminants from its surface; A polarizer is formed on the pre-display screen, and the polarizer is used to adjust the light emitted by the light-emitting unit.

2. The preparation method according to claim 1, characterized in that, The step of processing the pre-display screen to remove contaminants from its surface includes: Remove the anti-fouling protective layer; Preferably, the step of forming a polarizer on the pre-display screen includes: The polarizer is formed on the side of the touch function layer opposite to the substrate; Preferably, in the step of removing the antifouling protective layer, a plasma treatment process is used to remove the antifouling protective layer.

3. The preparation method according to claim 1, characterized in that, The step of processing the pre-display screen to remove contaminants from its surface includes: Remove contaminants from the surface of the antifouling protective layer that faces away from the substrate; Preferably, the step of forming a polarizer on the pre-display screen includes: The polarizer is formed on the side of the anti-fouling protective layer opposite to the substrate; Preferably, in the step of forming an anti-fouling protective layer on the side of the touch functional layer away from the substrate, the surface of the anti-fouling protective layer on the side away from the substrate includes a velvety structure. Preferably, after the step of removing contaminants from the surface of the antifouling protective layer facing away from the substrate, the method further includes: Remove part of the aforementioned antifouling protective layer; Preferably, the step of removing part of the antifouling protective layer includes: removing at least a portion of the fluff structure.

4. The preparation method according to any one of claims 1 to 3, characterized in that, The antifouling protective layer is made of organic materials; Preferably, the material of the antifouling protective layer includes a hydrophobic material; Preferably, the material of the antifouling protective layer includes at least one of fluorides and silanes; Preferably, the thickness H1 of the antifouling protective layer satisfies: 5 nanometers ≤ H1 ≤ 20 nanometers.

5. The preparation method according to any one of claims 1 to 3, characterized in that, Before forming the anti-fouling protective layer on the side of the touch function layer opposite to the substrate, the method further includes: A planarization layer is formed on the side of the touch function layer opposite to the substrate; Preferably, the coefficient of dynamic friction of the surface of the antifouling protective layer facing away from the substrate is less than the coefficient of dynamic friction of the surface of the planarization layer facing away from the substrate. Preferably, the coefficient of dynamic friction μ of the antifouling protective layer on the side facing away from the substrate satisfies: 0.02≤μ≤0.

1.

6. The preparation method according to any one of claims 1 to 3, characterized in that, In the step of forming an anti-fouling protective layer on the side of the touch function layer opposite to the substrate, the anti-fouling protective layer is formed as a single layer. Preferably, the display screen includes a display area and a non-display area, with a portion of the anti-fouling protective layer located in the display area and another portion located in the non-display area; Preferably, the step of forming a polarizer on the pre-display screen includes: Provide one of the aforementioned polarizers; The polarizer is transferred to the pre-display screen, and the polarizer is connected to the pre-display screen; Preferably, in the step of transferring the polarizer to the pre-display screen and connecting the polarizer to the pre-display screen, the polarizer is bonded to the pre-display screen.

7. The preparation method according to any one of claims 1 to 3, characterized in that, After the step of forming polarizers on each of the prepared display screens, the method further includes: A cover plate is formed on the side of the polarizer facing away from the substrate to form the display screen; Preferably, the cover plate is made of a light-transmitting material; Preferably, before the step of forming a cover plate on the side of the polarizer facing away from the substrate, the method further includes: A bonding adhesive layer is formed on the side of the polarizer facing away from the substrate.

8. A display screen, characterized in that, It is prepared by the preparation method according to any one of claims 1 to 7.

9. A pre-display screen, characterized in that, include: substrate; A light-emitting layer is disposed on one side of the substrate. The light-emitting layer includes a plurality of light-emitting units arranged in an array. The plurality of light-emitting units are used to emit light. An encapsulation layer is disposed on the side of the light-emitting unit away from the substrate, the encapsulation layer covers the plurality of light-emitting units, and the encapsulation layer is used to encapsulate the plurality of light-emitting units; A touch function layer is disposed on the side of the encapsulation layer opposite to the substrate, and the touch function layer is used to transmit touch signals; A dirt-resistant protective layer is disposed on the side of the touch function layer opposite to the substrate.

10. The pre-display screen according to claim 9, characterized in that, The surface of the antifouling protective layer opposite to the substrate includes a velvety structure. Preferably, the material of the antifouling protective layer includes at least one of fluorides and silanes; Preferably, the thickness H1 of the antifouling protective layer satisfies: 5 nanometers ≤ H1 ≤ 20 nanometers; Preferably, the coefficient of dynamic friction μ of the antifouling protective layer on the side facing away from the substrate satisfies: 0.02≤μ≤0.1.

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