Display screen and manufacturing method thereof

Abstract

The embodiment of the present application provides a display screen and a method for making the same, which relates to the field of display technology and is used to solve the technical problem that the display panel is prone to deformation during the process of making the display screen. The method for making the display screen of the embodiment of the present application includes: providing a flexible display panel having a functional layer, the functional layer having a first light-transmitting hole; providing an optical adhesive layer on the functional layer; in a vacuum environment, laminating a cover layer on the optical adhesive layer to form a display screen under manufacture, the first light-transmitting hole forming a closed cavity; placing the display screen under manufacture in a non-vacuum environment, allowing gas to enter the closed cavity through the optical adhesive layer, and making the air pressure in the closed cavity equal to the normal atmospheric pressure. The method for making the display screen can prevent the display panel from deforming, avoid damage to the display panel, and improve the yield of the display screen.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display screen and a manufacturing method thereof. Background Art

[0002] With the development of display technology, under-screen technology has become the current development trend. In under-screen technology, the camera is set below the display screen, so there is no need to reserve an area on the display screen for installing the camera, thereby increasing the screen-to-body ratio of the display screen. In related technologies, the display screen usually includes a flexible display panel, a polarizing layer, and a cover layer stacked in sequence. The polarizing layer is provided with a light-transmitting hole opposite to the camera to increase the transmittance of external light and improve the image quality captured by the camera.

[0003] However, in the process of manufacturing the above display screen, the flexible display panel is prone to deformation, which may easily lead to separation or breakage of the film layer in the flexible display panel, causing damage to the flexible display panel and reducing the yield of the display screen. Summary of the invention

[0004] In view of the above problems, the embodiments of the present application provide a display screen and a method for manufacturing the same, so as to solve the technical problem that the flexible display panel is prone to deformation during the process of manufacturing the display screen.

[0005] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0006] A first aspect of an embodiment of the present application provides a method for manufacturing a display screen, comprising:

[0007] Providing a display panel having a functional layer, wherein the functional layer has a first light-transmitting hole;

[0008] Disposing an optical adhesive layer on the functional layer;

[0009] In a vacuum environment, a cover layer is laminated on the optical adhesive layer to form a display screen, wherein the first light-transmitting hole forms a closed cavity;

[0010] The display screen in production is placed in a non-vacuum environment, gas is allowed to enter the closed cavity through the optical adhesive layer, and the gas pressure in the closed cavity is equal to the normal atmospheric pressure.

[0011] The manufacturing method of the display screen of the embodiment of the present application is to first form a functional layer with a first light-transmitting hole on the display panel, and then adhere the optical adhesive layer to the functional layer so that the first light-transmitting hole forms a closed cavity, and the air pressure in the closed cavity is equal to the conventional atmospheric pressure. In a vacuum environment, since the optical adhesive layer has a certain air permeability, part of the gas in the closed cavity will flow out of the closed cavity through the optical adhesive layer, and the air pressure in the closed cavity is less than the conventional atmospheric pressure. When the screen body is placed in a non-vacuum environment, the external gas can enter the closed cavity through the optical adhesive layer, so that the air pressure in the closed cavity is equal to the conventional atmospheric pressure, which can prevent the display panel from sinking into the closed cavity, thereby preventing the display panel from deforming during the process of manufacturing the display screen, and then preventing the film layer in the display panel from separating or breaking, avoiding damage to the display panel, and improving the yield of the display screen.

[0012] In a possible implementation, the step of placing the display screen under manufacture in a non-vacuum environment, allowing gas to enter the closed cavity through the optical adhesive layer, and making the gas pressure in the closed cavity equal to the normal atmospheric pressure includes:

[0013] The air pressure of the non-vacuum environment reaches a preset air pressure within a first time period, wherein the preset air pressure is greater than the normal atmospheric pressure, so that the gas enters the closed cavity through the optical adhesive layer;

[0014] Maintaining the air pressure of the non-vacuum environment at the preset air pressure for a second period of time;

[0015] The air pressure of the non-vacuum environment is reduced from the preset air pressure to the normal atmospheric pressure within a third period of time, so that the air pressure in the closed cavity is equal to the normal atmospheric pressure.

[0016] In a possible implementation, the first duration is 5 to 10 minutes, and the relative pressure of the preset air pressure is 0.6 to 0.7 MPa.

[0017] In a possible implementation, the second duration is 15 to 20 minutes.

[0018] In a possible implementation, the third duration is 5 to 15 minutes.

[0019] In one possible implementation, the optical adhesive layer has a through hole; when the optical adhesive layer is disposed on the functional layer, the through hole is connected to the first light-transmitting hole; in a vacuum environment, when a cover layer is attached to the optical adhesive layer to form a display screen, the through hole and the first light-transmitting hole form a vacuum closed cavity.

[0020] In a possible implementation, the optical adhesive layer includes a colloid and an initiator; after the step of laminating the cover layer on the optical adhesive layer to form a display screen under manufacture, and before placing the display screen under manufacture in a non-vacuum environment, the manufacturing method further includes:

[0021] The optical adhesive layer is heated, and the initiator causes the colloid to flow and fill the through hole.

[0022] In one possible implementation, the initiator includes at least one of benzoyl peroxide, methyl ethyl ketone peroxide and lauroyl peroxide.

[0023] In a possible implementation, when the optical adhesive layer is heated, the heating temperature is 50 to 80° C. and the heating time is 20 to 40 seconds.

[0024] In a possible implementation, the through hole is a circular through hole or a cross-shaped through hole.

[0025] In a possible implementation, there are multiple through holes, and all of the multiple through holes are connected to the first light-transmitting hole.

[0026] In a possible implementation, the relative pressure of the vacuum environment is -120 to -80 Pa.

[0027] A second aspect of an embodiment of the present application provides a display screen manufactured by the above-mentioned display screen manufacturing method.

[0028] The display screen of the embodiment of the present application avoids the display panel from sinking into the closed cavity to a large extent, thereby avoiding deformation of the display panel during the manufacturing process of the display screen, and further avoiding separation or breakage of the film layer in the display panel, avoiding damage to the display panel, and having a good yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 A schematic diagram of a process for manufacturing a display screen provided in an embodiment of the present application;

[0031] Figure 2 A schematic diagram for providing a flexible display panel;

[0032] Figure 3 is a schematic diagram of forming a functional layer having a first light-transmitting hole on a flexible display panel;

[0033] Figure 4 is a schematic diagram of attaching an optical adhesive layer having through holes on a functional layer;

[0034] Figure 5 is a schematic diagram when the through hole on the functional layer is a circular through hole;

[0035] Figure 6 is a schematic diagram when the through hole on the functional layer is a cross-shaped through hole;

[0036] Figure 7 A schematic diagram for providing a cover layer;

[0037] Figure 8 It is a schematic diagram of placing a flexible display panel having a functional layer formed thereon and an optical adhesive layer thereon in a vacuum environment;

[0038] Fig. 9 is a schematic diagram of laminating the cover layer onto the optical adhesive layer in a vacuum environment;

[0039] Fig.10 This is a schematic diagram of forming a support layer on the side of the flexible display panel facing away from the functional layer.

[0040] Description of reference numerals:

[0041] 100. Flexible display panel;

[0042] 200, cover layer;

[0043] 300, sealed chamber;

[0044] 310. Support platform;

[0045] 400, functional layer;

[0046] 410, first light transmission hole;

[0047] 500, camera;

[0048] 600, optical adhesive layer;

[0049] 610, through hole;

[0050] 700, support layer;

[0051] 710. Second light-transmitting hole. DETAILED DESCRIPTION

[0052] In the related art, the display screen includes a display panel, a polarizing layer and a cover layer which are stacked in sequence, and the polarizing layer is provided with a light-transmitting hole opposite to the camera. When making the display screen, the polarizing layer with the light-transmitting hole is firstly pasted on the display panel, and then the optical adhesive layer is pasted on the polarizing layer. Then, the cover layer is pasted on the optical adhesive layer in a vacuum environment to obtain the display screen. After the cover layer is pasted, the display screen is placed in an atmospheric environment.

[0053] As described in the background technology, in the process of making the above-mentioned display screen, the display panel is prone to deformation, which can easily lead to technical problems such as separation or fracture of the film layer in the display panel. The inventors have found that the main reason for this is that when the optical adhesive layer is bonded to the polarizing layer with a light-transmitting hole, the optical adhesive layer causes the light-transmitting hole to form a closed cavity, and the air pressure in the closed cavity is the normal atmospheric pressure. When the cover layer is bonded under a vacuum environment, since the optical adhesive layer has a certain air permeability, part of the gas in the closed cavity flows out through the optical adhesive layer, making the air pressure in the closed cavity lower than the normal atmospheric pressure. When the display screen is placed in an atmospheric environment after the cover layer is bonded, the display panel will be sunken into the closed cavity, causing the display panel to deform, which can easily lead to separation or fracture of the film layer in the display panel, causing damage to the display panel, thereby reducing the yield of the display screen.

[0054] In response to the above technical problems, an embodiment of the present application provides a method for manufacturing a display screen. After the cover layer is bonded, the display screen is placed in a non-vacuum environment, and the gas enters the closed cavity through the optical adhesive layer, so that the air pressure in the closed cavity is equal to the conventional atmospheric pressure, which can prevent the display panel from sinking into the closed cavity, thereby preventing the display panel from deforming, and further preventing the film layer in the display panel from separating or breaking, avoiding damage to the display panel, and improving the yield of the display screen.

[0055] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0056] It should be noted that the conventional atmospheric pressure in the embodiments of the present application refers to the air pressure under a general atmospheric environment, and the display panel adopts a flexible display panel.

[0057] refer to Figure 1 , the display screen manufacturing method of the embodiment of the present application includes:

[0058] S100, providing a flexible display panel having a functional layer, wherein the functional layer has a first light-transmitting hole.

[0059] For example, reference Figure 2 First, a flexible display panel 100 is provided. The flexible display panel 100 is used to display images, and has a bendable property and can be bent or folded. Exemplarily, the flexible display panel can be an organic light-emitting diode (OLED) flexible display panel.

[0060] The OLED flexible display panel may include a flexible substrate, a thin film transistor array layer, a light emitting layer and an encapsulation layer which are stacked in sequence. The flexible substrate provides support for other film layers of the OLED flexible display panel, and the material of the flexible substrate may be polyimide, polyethylene terephthalate or polyethylene naphthalate, etc. The thin film transistor array layer is arranged on the flexible substrate, and the thin film transistor array layer has a plurality of thin film transistors arranged in a matrix. The light emitting layer is arranged on the thin film transistor array layer, and the light emitting layer has a light emitting unit array, and the light emitting unit array is arranged corresponding to the thin film transistor array to control the light emitting unit through the thin film transistor. The encapsulation layer is arranged on the light emitting layer, and is used to encapsulate the light emitting layer and the thin film transistor array layer to prevent external moisture, oxygen, etc. from entering the light emitting layer and the thin film transistor array layer and affecting the display performance of the OLED flexible display panel.

[0061] It can be understood that the flexible display panel may also be other types of flexible display panels.

[0062] refer to Figure 3 , and then a functional layer 400 having a first light-transmitting hole 410 is formed on the flexible display panel 100. The functional layer 400 is provided with the first light-transmitting hole 410. The first light-transmitting hole 410 is arranged opposite to the camera 500, and external light can enter the camera 500 through the first light-transmitting hole 410. The functional layer 400 having the first light-transmitting hole 410 can increase the light transmittance, and when the light enters the camera 500 through the first light-transmitting hole 410, the light intensity entering the camera 500 can be increased, thereby improving the image quality captured by the camera.

[0063] Exemplarily, the functional layer 400 may be a polarizing layer or a touch layer. The polarizing layer is used to eliminate the influence of ambient light irradiated into the display screen on the display effect of the flexible display panel. The touch layer is used to implement touch operation on the display panel.

[0064] The functional layer 400 is formed on the flexible display panel 100 . The functional layer 400 can be made on the flexible display panel 100 . Alternatively, an adhesive layer can be provided between the flexible display panel 100 and the functional layer 400 , and the functional layer 400 is adhered to the flexible display panel 100 through the adhesive layer.

[0065] S200, disposing an optical adhesive layer on the functional layer.

[0066] refer to Figure 4 , an optical adhesive layer 600 is attached to the functional layer 400, and the optical adhesive layer 600 is used to bond the functional layer 400 and the cover layer 200. Exemplarily, the optical adhesive layer 600 may be a solid optical adhesive, and the solid optical adhesive includes a colloid, and release films are attached to both sides of the colloid. When attaching the solid optical adhesive to the functional layer 400, the release film on one side of the colloid is torn off, and the one side of the colloid is attached to the functional layer 400.

[0067] After the colloid is attached to the functional layer 400 , a roller may be used to roll the other side of the colloid with the release film attached thereto to apply pressure to the colloid, thereby enhancing the bonding force between the colloid and the functional layer 400 and preventing the colloid and the functional layer 400 from separating.

[0068] In some implementations of the present application, the optical adhesive layer 600 may be provided with a through hole 610. When the optical adhesive layer is provided on the functional layer, the through hole 610 is connected to the first light-transmitting hole 410, and the through hole 610 and the first light-transmitting hole 410 form an open cavity.

[0069] The solid optical adhesive may be pre-arranged with a through hole 610. Figure 5 The through hole 610 may be a circular through hole. Since the circular through hole has a regular shape, it is easy to process and shape, which can reduce the difficulty of manufacturing the through hole 610. Figure 6 , the through hole 610 can also be a cross-shaped through hole. It is understandable that the through hole 610 can also be other shapes.

[0070] The number of through holes 610 may be one or more. When the number of through holes 610 is more, the multiple through holes 610 may all be connected to the first light-transmitting hole 410 to increase the area of ​​the open cavity formed by the through holes 610 and the first light-transmitting hole 410 connected to the outside.

[0071] S300, in a vacuum environment, laminating a cover layer on the optical adhesive layer to form a display screen, wherein the first light-transmitting hole forms a closed cavity.

[0072] The cover layer is used to be attached to the flexible display panel 100 to protect the flexible display panel 100. Figure 7, the cover layer 200 generally needs to be attached to the flexible display panel 100 under a vacuum environment to reduce the number of bubbles generated between the cover layer 200 and the flexible display panel 100 during the attachment process, to ensure the attachment effect between the cover layer 200 and the flexible display panel 100, and thus to ensure the display effect of the display screen. Exemplarily, when providing the cover layer 200, the cover layer 200 can be placed in a sealed chamber 300 of a vacuum attachment device to facilitate the subsequent attachment operation of the cover layer 200.

[0073] Exemplarily, the material of the cover layer 200 may be ultra-thin glass or polyimide, etc. The cover layer 200 may also be other materials.

[0074] refer to Figure 8 , the flexible display panel 100 having the functional layer 400 is bonded to the optical adhesive layer 600 to obtain a display screen in process. Then, the display screen in process is placed in a vacuum environment. For example, it can be placed on the support platform 310 in the sealed chamber 300 of the vacuum bonding equipment, and then the sealed chamber 300 is evacuated to form a vacuum environment. At this time, the air pressure in the open cavity formed by the through hole 610 and the first light-transmitting hole 410 is equal to the air pressure of the vacuum environment, which can prevent the flexible display panel 100 from bulging out of the open cavity and avoid deformation of the flexible display panel 100.

[0075] refer to Fig. 9 , the cover layer 200 is attached to the optical adhesive layer 600, and the cover layer 200 forms a closed cavity with the through hole 610 and the first light-transmitting hole 410. For example, the release film on the other side of the colloid can be torn off, and the cover layer 200 is placed on the other side of the colloid from which the release film is torn off, and then a pressure plate connected to a cylinder is used to cover the cover layer 200, and the cylinder is controlled to move, and pressure is applied to the cover layer 200 through the pressure plate, so that the cover layer 200 is attached to the optical adhesive layer 600 to form an in-process display screen.

[0076] Laminating the cover layer 200 in a vacuum environment can reduce the number of bubbles generated between the cover layer 200 and the optical adhesive layer 600 during the laminating process, thereby ensuring the laminating effect between the cover layer 200 and the optical adhesive layer 600.

[0077] Exemplarily, the relative pressure of the vacuum environment may be -120 to -80 Pa, for example, -120 Pa, -110 Pa, -100 Pa, -90 Pa or -80 Pa. When the cover layer 200 is bonded in a vacuum environment with a relative pressure of -120 to -80 Pa, the number of bubbles generated between the cover layer 200 and the optical adhesive layer 600 can meet the quality requirements, and the requirements for the vacuum degree of the equipment used to form the vacuum environment can be reduced, thereby reducing the equipment cost.

[0078] In some implementations of the embodiments of the present application, the optical adhesive layer 600 may include a colloid and an initiator. After the step of laminating the cover layer 200 on the optical adhesive layer 600 to form a display screen, the optical adhesive layer 600 may be heated. The initiator is decomposed into free radicals by heat, which can initiate free radical polymerization and copolymerization of olefinic and diene monomers, so that the colloid in the optical adhesive layer 600 flows and fills the through hole 610.

[0079] Since the through hole 610 is filled with colloid, the bonding area between the optical adhesive layer 600 and the cover layer 200 is increased, so that the optical adhesive layer 600 and the cover layer 200 can be completely attached to each other, ensuring the bonding force between the optical adhesive layer 600 and the cover layer 200.

[0080] In addition, since the through hole 610 is filled with colloid, the influence of the through hole 610 on the light emitted by the flexible display panel 100 can be eliminated, thereby ensuring the display effect of the display screen; at the same time, the influence of the through hole 610 on the light entering the first light-transmitting hole 410 can also be eliminated, thereby ensuring the image quality captured by the camera 500.

[0081] Exemplarily, when the through hole 610 is a cross-shaped through hole, when the optical adhesive layer 600 is heated, the colloid flows, and the edge of the cross-shaped through hole can be moved toward the center of the cross-shaped through hole and fused, so that the colloid can fill the through hole 610 and ensure the filling effect of the through hole 610.

[0082] Illustratively, the initiator may include at least one of benzoyl peroxide, methyl ethyl ketone peroxide, and lauroyl peroxide.

[0083] Exemplarily, when the optical adhesive layer 600 is heated, the support platform 310 may have a heating function, and the screen body in process may be heated through the support platform 310 to indirectly heat the optical adhesive layer 600. A heating fixture may also be provided at a position corresponding to the optical adhesive layer 600 in the sealing chamber 300 of the vacuum bonding device, so as to directly heat the optical adhesive layer 600 through the heating fixture, so as to avoid heating the flexible display panel 100, the functional layer 400 and the cover layer 200, thereby preventing the flexible display panel 100, the functional layer 400 and the cover layer 200 from being damaged and ensuring the quality of the display screen.

[0084] Exemplarily, when the optical adhesive layer is heated, the heating temperature may be 50 to 80°C, for example, 50°C, 60°C, 7°C or 80°C; the heating time may be 20 to 40S, for example, 20S, 25S, 30S, 35S or 40S. The heating temperature is 50 to 80°C and the heating time is 20 to 40S, which can prevent the optical adhesive layer 600 from being overheated, avoid the optical adhesive layer 600 from being overheated and causing the colloid to overflow, and avoid affecting other film layers such as the functional layer 400 and the cover layer 200.

[0085] S400, placing the display screen under production in a non-vacuum environment, allowing gas to enter the closed cavity through the optical adhesive layer, and making the gas pressure in the closed cavity equal to the normal atmospheric pressure.

[0086] refer to Fig. 9 , placing the display screen under preparation in a non-vacuum environment, so that the air pressure in the closed cavity is equal to the conventional atmospheric pressure. Exemplarily, the sealed chamber 300 of the vacuum bonding equipment can be vented to form a non-vacuum environment in the sealed chamber 300. In a non-vacuum environment, the air outside the display screen under preparation can enter the closed cavity through the optical adhesive layer 600, so that the air pressure in the closed cavity is equal to the conventional atmospheric pressure, which can prevent the flexible display panel 100 from sinking into the closed cavity, thereby preventing the flexible display panel 100 from deforming, and further preventing the film layer in the flexible display panel 100 from separating or breaking, avoiding damage to the flexible display panel 100, and improving the yield of the display screen.

[0087] Exemplarily, the step of forming a non-vacuum environment may include: making the air pressure of the non-vacuum environment reach a preset air pressure within a first time period, the preset air pressure being greater than the conventional atmospheric pressure, so that the gas outside the display screen under the action of the preset air pressure can enter the closed cavity through the optical adhesive layer 600, thereby increasing the air pressure in the closed cavity. Exemplarily, the first time period may be 5 to 10 minutes, for example, 5 minutes, 6 minutes, 7 minutes, 8 minutes, 9 minutes and 10 minutes; the relative pressure of the preset air pressure may be 0.6 to 0.7 MPa, for example, 0.6 Pa, 0.65 Pa or 0.7 Pa, so as to avoid the external air from entering the closed cavity at too fast a rate and causing impact on the flexible display panel 100, and to avoid deformation of the flexible display panel 100.

[0088] Then, the air pressure of the non-vacuum environment is maintained at a preset air pressure for a second time period, so that the external gas can continuously enter the closed cavity, and the air volume in the closed cavity is ensured, so that the air pressure in the closed cavity is gradually increased. Exemplarily, the second time period may be 15 to 20 minutes, for example, 15 minutes, 16 minutes, 17 minutes, 18 minutes, 19 minutes or 20 minutes, to prevent excessive air volume from entering the closed cavity and causing excessive air pressure in the closed cavity, and further prevent deformation of the flexible display panel 100.

[0089] Then, the air pressure of the non-vacuum environment is reduced from the preset air pressure to the normal atmospheric pressure within the third time period, so that the air pressure in the closed cavity is equal to the normal atmospheric pressure, thereby balancing the air pressure on both sides of the flexible display panel 100, and preventing the flexible display panel 100 from deforming. Exemplarily, the third time period may be 5 to 15 minutes, for example, 5 minutes, 7 minutes, 9 minutes, 11 minutes, 13 minutes or 15 minutes, so as to prevent the air pressure outside the display screen from dropping too fast, causing the air in the closed cavity to overflow from the optical adhesive layer 600, and to prevent the air pressure in the closed cavity from being less than the normal atmospheric pressure, and further preventing the flexible display panel 100 from deforming.

[0090] refer to Fig.10 , the manufacturing method of the display screen of the embodiment of the present application may further include: forming a support layer 700 on the side of the flexible display panel 100 facing away from the functional layer 400, and the support layer 700 supports the flexible display panel 100 and other film layers located on the flexible display panel 100. Exemplarily, a second light-transmitting hole 710 may also be provided on the support layer 700, and the second light-transmitting hole 710 may be arranged opposite to the first light-transmitting hole 410, so that the second light-transmitting hole 710 is opposite to the camera 500. The support layer 700 with the second light-transmitting hole 710 can increase the light transmittance. When the light enters the camera 500 through the second light-transmitting hole 710, the light intensity entering the camera 500 can be increased, thereby improving the image quality captured by the camera 500.

[0091] Exemplarily, when manufacturing the support layer 700, the support layer 700 may be manufactured below the flexible display panel 100 after providing the flexible display panel 100 and before manufacturing the functional layer 400. Alternatively, after placing the screen body in a non-vacuum environment so that the air pressure in the closed cavity is equal to the normal atmospheric pressure, the support layer 700 may be manufactured on the side of the flexible display panel 100 facing away from the functional layer 400. Exemplarily, the support layer 700 may be a back support film (BPF) or a heat dissipation film (SCF), etc.

[0092] refer to Fig.10The embodiment of the present application further provides a display screen, comprising a flexible display panel 100, a functional layer 400, an optical adhesive layer 600 and a cover layer 200 stacked in sequence, wherein the functional layer 400 is provided with a first light-transmitting hole 410. The optical adhesive layer 600 is provided with a through hole, which is connected to the first light-transmitting hole 410. The optical adhesive layer 600 comprises a colloid and an initiator, wherein the initiator is configured to make the colloid flow and fill the through hole when the optical adhesive layer 600 is heated.

[0093] Since the optical adhesive layer 600 includes an initiator, when the optical adhesive layer 600 is heated during the process of manufacturing the display screen, the initiator can cause the colloid to flow and fill the through hole, thereby increasing the bonding area between the optical adhesive layer 600 and the cover layer 200, so that the optical adhesive layer 600 and the cover layer 200 can be completely fitted together, thereby ensuring the bonding force between the optical adhesive layer 600 and the cover layer 200; and can eliminate the influence of the through hole 610 on the light emitted by the flexible display panel 100, thereby ensuring the display effect of the display screen; and at the same time, can also eliminate the influence of the through hole 610 on the light entering the first light-transmitting hole 410, thereby ensuring the image quality captured by the camera 500.

[0094] The display screen further includes a support layer 700, which is located on the side of the flexible display panel 100 facing away from the functional layer 400, so as to support the flexible display panel 100 and other film layers located on the flexible display panel 100. Exemplarily, a second light-transmitting hole 710 may also be provided on the support layer 700, and the second light-transmitting hole 710 may be arranged opposite to the first light-transmitting hole 410, so that the second light-transmitting hole 710 is opposite to the camera 500. The support layer 700 having the second light-transmitting hole 710 can increase the light transmittance, and when the light enters the camera 500 through the second light-transmitting hole 710, the light intensity entering the camera 500 can be increased, thereby improving the image quality captured by the camera 500.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for manufacturing a display screen, characterized in that: include: Providing a display panel having a functional layer, wherein the functional layer has a first light-transmitting hole; Disposing an optical adhesive layer on the functional layer; In a vacuum environment, a cover layer is laminated on the optical adhesive layer to form a display screen, wherein the first light-transmitting hole forms a closed cavity; Placing the display screen in production in a non-vacuum environment, so that the air pressure of the non-vacuum environment reaches a preset air pressure within a first period of time, wherein the preset air pressure is greater than the normal atmospheric pressure, so that the gas enters the closed cavity through the optical adhesive layer; Maintaining the air pressure of the non-vacuum environment at the preset air pressure for a second period of time; The air pressure of the non-vacuum environment is reduced from the preset air pressure to the normal atmospheric pressure within a third period of time so that the air pressure in the closed cavity is equal to the normal atmospheric pressure.

2. The method for manufacturing a display screen according to claim 1, characterized in that: The first duration is 5 to 10 minutes, and the relative pressure of the preset air pressure is 0.6 to 0.7 MPa; The second duration is 15 to 20 minutes; The third duration is 5 to 15 minutes.

3. The method for manufacturing a display screen according to any one of claims 1 to 2, characterized in that: The optical adhesive layer has a through hole; when the optical adhesive layer is arranged on the functional layer, the through hole is connected to the first light-transmitting hole; in a vacuum environment, when a cover layer is attached to the optical adhesive layer to form a display screen, the through hole and the first light-transmitting hole form a vacuum closed cavity.

4. The method for manufacturing a display screen according to claim 3, characterized in that: The optical adhesive layer includes a colloid and an initiator; after the step of laminating a cover layer on the optical adhesive layer to form a display screen under manufacture, and before placing the display screen under manufacture in a non-vacuum environment, the manufacturing method further includes: The optical adhesive layer is heated, and the initiator causes the colloid to flow and fill the through hole.

5. The method for manufacturing a display screen according to claim 4, characterized in that: The initiator includes at least one of benzoyl peroxide, methyl ethyl ketone peroxide and lauroyl peroxide.

6. The method for manufacturing a display screen according to claim 4, characterized in that: When the optical adhesive layer is heated, the heating temperature is 50-80° C. and the heating time is 20-40 seconds.

7. The method for manufacturing a display screen according to claim 3, characterized in that: The through hole is a circular through hole or a cross-shaped through hole; There are a plurality of through holes, and all of the through holes are connected to the first light-transmitting hole.

8. The method for manufacturing a display screen according to any one of claims 1 to 2, characterized in that: The relative pressure of the vacuum environment is -120~-80Pa.

9. A display screen, characterized in that: The display screen is manufactured by the manufacturing method of the display screen according to any one of claims 1 to 8.

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