Polarizing structure, flexible panel and manufacturing method of flexible panel

Abstract

The application provides a polarizing structure, a flexible panel and a manufacturing method of the flexible panel. The manufacturing method of the flexible panel comprises the following steps: die cutting the polarizing structure along a cutting line in the direction from a second release film to a first release film, so as to divide the second release film, the polarizing sheet and the protective film into a to-be-bonded block and a filling block. The to-be-bonded block comprises a first release area, a bonding area and a first protection area. The filling block comprises a second release area, a filling area and a second protection area. After removing the first release area of the second release film in the to-be-bonded block, the bonding area of the polarizing sheet is bonded to one side of an OLED layer, and the filling block is filled into a pad area of a thin film substrate. The other side of the OLED layer is bonded to a non-pad area of the thin film substrate, and after the BP layer is bonded to the thin film substrate, the first release film and the filling block attached to the first release film are removed. The method can effectively avoid bonding bubbles caused by uneven bonding force between the two, and facilitates subsequent processing.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of display, and particularly relates to a polarizing structure, a flexible panel and a manufacturing method of the flexible panel. BACKGROUND

[0002] At present, a flexible OLED layer panel mainly comprises a polarizing sheet, an OLED layer, a thin film substrate and a BP layer. The area of the OLED layer is different from that of the thin film substrate, and a step is formed in the area where the OLED layer and the thin film substrate are not attached. The thin film substrate is a suspended area corresponding to the step. When the suspended area of the thin film substrate is attached to the BP layer, the suspended area of the thin film substrate is easily affected by the unbalance of the attachment pressure, so that the attachment of the suspended area of the thin film substrate to the BP layer is prone to produce an attachment bubble, and further causes problems such as the combination of Bonding COF being unable to be recognized, COF offset and the like. Therefore, how to avoid the attachment bubble produced when the suspended area of the thin film substrate is attached to the BP layer becomes a problem to be solved in the industry. SUMMARY

[0003] Embodiments of the present application provide a polarizing structure, a flexible panel and a manufacturing method of the flexible panel, so as to solve the problem of the attachment bubble produced when the suspended area of the thin film substrate is attached to the BP layer in the existing flexible LED panel.

[0004] In a first aspect, embodiments of the present application provide a polarizing structure, comprising a first release film, a protective film, a polarizing sheet and a second release film which are sequentially stacked and attached, the second release film, the polarizing sheet and the protective film are divided into two parts along the direction from the second release film to the first release film; the polarizing sheet comprises an attachment area for being attached to an OLED layer, and a filling area for filling a pad area of a thin film substrate, the second release film comprises a first release area and a second release area, the first release area is arranged corresponding to the attachment area, and the second release area is arranged corresponding to the filling area; the protective film comprises a first protective area and a second protective area, the first protective area is arranged corresponding to the attachment area, and the second protective area is arranged corresponding to the filling area, the second protective area, the filling area and the second release area constitute a filling block for filling the pad area of the thin film substrate.

[0005] Optionally, the thickness of the second release film approaches the thickness of the OLED layer.

[0006] Optionally, the area of the first protective area is greater than the area of the second protective area, the area of the first release area is greater than the area of the second release area, and the area of the attachment area is greater than the area of the filling area.

[0007] In a second aspect, the embodiments of the present application provide a flexible panel, comprising a polarizing structure, an OLED layer, a thin film substrate and a BP layer which are sequentially stacked, the thin film substrate has a non-pad area adhering to the OLED layer, and a pad area not adhering to the OLED layer, and the polarizing structure is any of the polarizing structures described above.

[0008] In a third aspect, the embodiments of the present application provide a manufacturing method of a flexible panel, the flexible panel comprising a polarizing structure, an OLED layer, a thin film substrate and a BP layer which are sequentially stacked, the thin film substrate has a pad area not adhering to the OLED layer, and the method comprises:

[0009] cutting the polarizing structure along a cutting line in a direction from the second release film to the first release film to divide the second release film, the polarizing sheet and the protective film into a to-be-adhered block and a filling block, the to-be-adhered block comprising a first release area, an adhered area and a first protective area, and the filling block comprising a second release area, a filling area and a second protective area;

[0010] after removing the first release area of the second release film in the to-be-adhered block, adhering the adhered area of the polarizing sheet to one side of the OLED layer, and filling the filling block into the pad area of the thin film substrate;

[0011] after adhering the other side of the OLED layer to the non-pad area of the thin film substrate and adhering the BP layer to the thin film substrate, removing the first release film and the filling block attached to the first release film.

[0012] Optionally, the peeling force between the polarizing sheet and the OLED layer is greater than the peeling force between the protective film and the polarizing sheet, and the peeling force between the protective film and the polarizing sheet is greater than the peeling force between the polarizing sheet and the first release film and the peeling force between the polarizing sheet and the second release film, respectively.

[0013] In a fourth aspect, the embodiments of the present application provide a polarizing structure, comprising a protective film, a polarizing sheet and a release film which are sequentially stacked and adhered, the release film and the polarizing sheet are divided into two parts in a direction from the release film to the protective film, the polarizing sheet comprises an adhered area for adhering to an OLED layer and a filling area for filling a pad area of a thin film substrate, the release film comprises a first release area and a second release area, the first release area is arranged corresponding to the adhered area, and the second release area is arranged corresponding to the filling area, and the filling area and the second release area constitute a filling block for filling the pad area of the thin film substrate.

[0014] In a fifth aspect, the embodiments of the present application provide a flexible panel, comprising a polarizing structure, an OLED layer, a thin film substrate and a BP layer which are sequentially stacked, the thin film substrate has a non-pad area adhering to the OLED layer and a pad area not adhering to the OLED layer, and the polarizing structure is the polarizing structure described above.

[0015] In a sixth aspect, the embodiments of the present application provide a manufacturing method of a flexible panel, the flexible panel comprising a polarizing structure, an OLED layer, a thin film substrate and a BP layer which are sequentially stacked, the method comprising:

[0016] cutting the polarizing structure along a cutting line in a direction from the release film to the protective film to divide the release film and the polarizing sheet into an adhering block and a filling block, the adhering block comprising a first release area and an adhering area, and the filling block comprising a second release area and a filling area;

[0017] after removing the first release area of the release film in the adhering block, adhering the adhering area of the polarizing sheet to one side of the OLED layer, and filling the filling block into the pad area of the thin film substrate;

[0018] after adhering the other side of the OLED layer to the non-pad area of the thin film substrate and adhering the BP layer to the thin film substrate, performing laser cutting on the protective film along a dividing line between the non-pad area and the pad area to remove part of the protective film and the filling block attached to the protective film.

[0019] Optionally, the peeling force between the polarizing sheet and the OLED layer is greater than the peeling force between the protective film and the polarizing sheet, and the peeling force between the protective film and the polarizing sheet is greater than the peeling force between the polarizing sheet and the release film.

[0020] Optionally, the laser in the laser cutting is carbon dioxide laser or UV laser.

[0021] The polarizing structure provided by the embodiments of the present application comprises a first release film, a protective film, a polarizing sheet and a second release film, wherein the protective film, the polarizing sheet and the second release film can be cut into a filling block for filling the pad area of the thin film substrate, the filling block can provide a support point when the thin film substrate and the BP layer are adhered, so that the adhering force of the thin film substrate and the BP layer is more uniform, and the adhering bubbles generated between the two due to the non-uniform adhering force can be effectively avoided, facilitating subsequent processing.

[0022] The manufacturing method of the flexible panel provided by the embodiments of the present application can also avoid the adhering bubbles generated between the thin film substrate and the BP layer due to the non-uniform adhering force by using the above-mentioned polarizing structure. In addition, after the adhering is completed, the filling block can be removed by only tearing the first release film, which is convenient to operate and can improve work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0024] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings. In the following description, the same reference numbers represent the same parts.

[0025] Figure 1 The first structural diagram of the polarizing structure provided by the embodiments of the present application.

[0026] Figure 2 The first method flow chart of the manufacturing method of the flexible panel provided by the embodiments of the present application.

[0027] Figure 3 The first flow chart of the lamination of each layer of the flexible panel provided by the embodiments of the present application.

[0028] Figure 4 The second structural diagram of the polarizing structure provided by the embodiments of the present application.

[0029] Figure 5 The second method flow chart of the manufacturing method of the flexible panel provided by the embodiments of the present application.

[0030] Figure 6 The second flow chart of the lamination of each layer of the flexible panel provided by the embodiments of the present application. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0032] The embodiments of the present application provide a polarizing structure, a flexible panel and a manufacturing method of the flexible panel, to solve the problem of lamination bubble generated when the suspended area of the thin film substrate and the BP layer are laminated in the existing flexible LED panel. The following will be described in conjunction with the drawings.

[0033] The polarizing sheet provided by the embodiments of the present application can be applied to a flexible panel, and the flexible panel can be further applied to various display devices, such as mobile phones, tablet computers, televisions, displays, notebook computers, navigation devices and any product or component having a display function.

[0034] For example, refer to Figure 3 and Figure 6 , Figure 3 The first flowchart of the lamination of the layers of the flexible panel provided by the embodiments of the present application is shown in FIG. 1. Figure 6 The second flowchart of the lamination of the layers of the flexible panel provided by the embodiments of the present application is shown in FIG. 2. The flexible panel includes a polarizing structure, an OLED layer 115, a thin film substrate PI 116 and a BP layer 117 which are sequentially stacked, the thin film substrate PI 116 has a non-pad area which is laminated with the OLED layer 115, and a pad area which is not laminated with the OLED layer 115, and the polarizing structure is described in the embodiments below. Specifically, the OLED layer 115 is a display layer, and the area of the OLED layer 115 corresponds to the area of the polarizing structure after lamination. The area of the OLED layer 115 is smaller than the thin film substrate PI 116, and the OLED layer 115 and the non-pad area form a step difference. When the thin film substrate PI 116 and the BP layer 117 are laminated, air bubbles are easily generated, which affects the performance of the product. The specific structural design of the polarizing structure can reduce or avoid the generation of air bubbles.

[0035] In order to more clearly illustrate the structure, the polarizing structure will be described below in combination with the drawings. Refer to Figure 1 , Figure 1 The first structural diagram of the polarizing structure provided by the embodiments of the present application is shown in FIG. 3. The polarizing structure includes a first release film 112 (PF3), a protective film 113 (PF1), a polarizing sheet 111 (POL) and a second release film 114 (PF2) which are sequentially stacked and laminated, the second release film 114 (PF2), the polarizing sheet 111 (POL) and the protective film 113 (PF1) are divided into two parts along the direction from the second release film 114 (PF2) to the first release film 112 (PF3); the polarizing sheet 111 (POL) includes a lamination area for lamination with the OLED layer 115, and a filling area for filling the pad area of the thin film substrate PI 116, the second release film 114 (PF2) includes a first release area and a second release area, the first release area is arranged corresponding to the lamination area, and the second release area is arranged corresponding to the filling area; the protective film 113 (PF1) includes a first protective area and a second protective area, the first protective area is arranged corresponding to the lamination area, and the second protective area is arranged corresponding to the filling area, the second protective area, the filling area and the second release area constitute a filling block 118 for filling the pad area of the thin film substrate PI 116.

[0036] Specifically, the first release film 112 (PF3) is arranged away from the OLED layer 115, and the second release film 114 (PF2) is arranged close to the OLED layer 115. The second release film 114 (PF2) and the protective film 113 (PF1) are arranged on both sides of the polarizer 111 (POL) to protect the polarizer 111 (POL). The protective film 113 (PF1), the polarizer 111 (POL) and the second release film 114 (PF2) are divided into two isolated blocks, one of which is a filling block 118, and the other is a to-be-bonded block. The filling block 118 and the to-be-bonded block are connected by the first release film 112 (PF3), that is, the first release film 112 (PF3) supports the entire polarizing structure. The to-be-bonded block can be bonded with the OLED layer 115, and the filling block fills the pad area of the thin film substrate PI 116. Before the polarizer 111 (POL) and the OLED layer 115 are bonded, the first release area of the second release film 114 (PF2) corresponding to the bonding area of the polarizer 111 (POL) needs to be torn off. The first release film 112 (PF3) is used to separate the protective film 113 (PF1) and take away the filling block 118 after the bonding is completed, which is convenient for processing the pad area of the thin film substrate PI 116.

[0037] For example, the thickness of the second release film 114 (PF2) approaches the thickness of the OLED layer 115. By approaching the thickness of the second release film 114 (PF2) and the thickness of the OLED layer 115, the second release film 114 (PF2) can completely replace the OLED layer 115, so that the generation of bonding bubbles can be fundamentally avoided. In this application, the thickness of the OLED layer 115 is about 30 um, and the thickness of the second release film 114 (PF2) can be designed to approach 30 um.

[0038] The area of the first protection area is greater than the area of the second protection area, the area of the first release area is greater than the area of the second release area, and the area of the bonding area is greater than the area of the filling area. The bonding area corresponds to the OLED layer 115, and the larger the bonding area is, the larger the display area of the OLED layer 115 is, which can improve the display effect.

[0039] In order to clearly illustrate the manufacturing process of the present application, the manufacturing method of the flexible panel will be described in detail below with reference to the drawings. Please refer to Figure 2 and Figure 3 , Figure 2 the first method flow chart of the manufacturing method of the flexible panel provided by the embodiments of the present application. Figure 3A first flowchart of lamination of layers of a flexible panel is provided for embodiments of the present application. A method of manufacturing a flexible panel, the flexible panel comprising a polarizing structure, an OLED layer 115, a thin film substrate PI 116, and a BP layer 117 stacked in sequence, the thin film substrate PI 116 not laminating a pad area of the OLED layer 115, the method comprising:

[0040] S110, die cutting the polarizing structure along a cutting line of the polarizing structure in a direction from the second release film 114 (PF2) to the first release film 112 (PF3) to divide the second release film 114 (PF2), the polarizing sheet 111 (POL), and the protective film 113 (PF1) into a lamination block and a filling block 118, the lamination block comprising a first release area, a lamination area, and a first protection area, and the filling block 118 comprising a second release area, a filling area, and a second protection area.

[0041] In this step, the specific position of the cutting line can be flexibly set. When die cutting and cutting, the second release film 114 (PF2), the polarizing sheet 111 (POL), and the protective film 113 (PF1) are cut off, but the first release film 112 (PF3) is not cut off. The polarizing structure after cutting is divided into the lamination block and the filling block 118. The spacing between the lamination block and the filling block 118 can be set according to the cutting requirement of the cutting line. The lamination block and the filling block 118 are connected through the first release film 112 (PF3), that is, the entire polarizing structure is supported by the first release film 112 (PF3).

[0042] S120, after removing the first release area of the second release film 114 (PF2) in the lamination block, laminating the lamination area of the polarizing sheet 111 (POL) on one side of the OLED layer 115, and filling the filling block 118 into the pad area of the thin film substrate PI 116.

[0043] In this step, the lamination area of the polarizing sheet 111 (POL) is directly laminated on the OLED layer 115, and the area of the lamination area is the same as that of the OLED layer 115. Before the polarizing sheet 111 (POL) is laminated on the OLED layer 115, the first release area of the second release film 114 (PF2) is removed to facilitate better contact between the polarizing sheet 111 (POL) and the OLED layer 115. The filling block 118 is filled in the pad area of the thin film substrate PI 116 to provide support for lamination of the pad area of the thin film substrate PI 116.

[0044] S130, laminating the other side of the OLED layer 115 to the non-pad area of the thin film substrate PI 116, and laminating the BP layer 117 to the thin film substrate PI 116, and then removing the first release film 112 (PF3) and the filling block 118 attached to the first release film 112 (PF3).

[0045] In this step, the non-pad area of the thin film substrate PI116 is in contact with the OLED layer 115 and the BP layer 117 respectively, and the adhesion is relatively tight, and it is not easy to produce bubbles. When the non-pad area of the thin film substrate PI116 is adhered to the BP layer 117, the filling layer provides support for the non-pad area, so that the adhesion force between the thin film substrate PI116 and the BP layer 117 is more uniform, thereby avoiding the generation of adhesion bubbles between the two.

[0046] For example, in order to further reduce the adhesion bubbles generated between the thin film substrate PI116 and the BP layer 117, the thickness of the second release film 114 (PF2) can be close to the thickness of the OLED layer 115, and the second release film 114 (PF2) can completely replace the thickness of the OLED layer 115. At this time, the adhesion of the thin film substrate PI116 and the BP layer 117 can avoid the generation of adhesion bubbles.

[0047] For example, in order to ensure that the two tearing is completed in sequence, the peeling force between the polarizing sheet 111 (POL) and the OLED layer 115 is greater than the peeling force between the protective film 113 (PF1) and the polarizing sheet 111 (POL); The peeling force between the protective film 113 (PF1) and the polarizing sheet 111 (POL) is greater than the peeling force between the polarizing sheet 111 (POL) and the first release film 112 (PF3) and the polarizing sheet 111 (POL) and the second release film 114 (PF2), so that the product can be successfully produced, improve the production quality of the product, and effectively reduce the defective rate of the product.

[0048] Please refer to Figure 4 , Figure 4 The second structure diagram of the polarizing structure provided by the embodiment of the application. The polarizing structure includes a protective film 113 (PF1), a polarizing sheet 111 (POL), and a release film 114 (PF2) which are sequentially stacked and adhered, the release film 114 (PF2) and the polarizing sheet 111 (POL) are divided into two parts along the direction from the release film 114 (PF2) to the protective film 113 (PF1); The polarizing sheet 111 (POL) includes a bonding area for bonding with the OLED layer 115, and a filling area for filling the pad area of the thin film substrate PI116, the release film 114 (PF2) includes a first release area and a second release area, the first release area is provided corresponding to the bonding area, and the second release area is provided corresponding to the filling area; The filling area and the second release area constitute a filling block 118 for filling the pad area of the thin film substrate PI116.

[0049] Specifically, the release film 114 (PF2) is arranged close to the OLED layer 115, the protective film 113 (PF1) is arranged away from the OLED layer 115, and the release film 114 (PF2) and the protective film 113 (PF1) are entirely covered on both sides of the polarizer 111 (POL) to protect the polarizer 111 (POL). The polarizer 111 (POL) and the release film 114 (PF2) are divided into two isolated blocks, one of which is a filling block 118 and the other is a to-be-bonded block. The filling block 118 and the to-be-bonded block are connected through the protective film 113 (PF1), that is, the protective film 113 (PF1) supports the entire polarizing structure. The to-be-bonded block can be bonded with the OLED layer 115, and the filling block fills the pad area of the thin film substrate PI 116. Before the polarizer 111 (POL) and the OLED layer 115 are bonded, the first release area of the release film 114 (PF2) corresponding to the bonding area of the polarizer 111 (POL) needs to be torn off. After the bonding is completed, the protective film 113 (PF1) is cut by laser, and the protective film 113 (PF1) is partially separated and takes away the filling block 118, facilitating the processing of the pad area of the thin film substrate PI 116.

[0050] Please refer to Figure 5 and Figure 6 , Figure 5 The second method flow chart of the manufacturing method of the flexible panel provided in the embodiment of the present application. Figure 6 The second flow chart of the bonding of each layer of the flexible panel provided in the embodiment of the present application. The manufacturing method of the flexible panel, the flexible panel includes a polarizing structure, an OLED layer 115, a thin film substrate PI 116 and a BP layer 117 which are arranged in sequence, and the method includes the following steps:

[0051] S210, die cutting the polarizing structure along the cutting line of the release film 114 (PF2) to the protective film 113 (PF1) to divide the release film 114 (PF2) and the polarizer 111 (POL) into a to-be-bonded block and a filling block 118. The to-be-bonded block includes a first release area and a bonding area, and the filling block 118 includes a second release area and a filling area.

[0052] In this step, the specific position of the cutting line can be flexibly set. When die cutting, the release film 114 (PF2) and the polarizer 111 (POL) are cut off, but the protective film 113 (PF1) is not cut off. The polarizing structure after cutting is divided into a to-be-bonded block and a filling block 118. The spacing between the to-be-bonded block and the filling block 118 can be set according to the cutting requirement of the cutting line. The to-be-bonded block and the filling block 118 are connected through the protective film 113 (PF1), that is, the entire polarizing structure is supported by the protective film 113 (PF1).

[0053] S220, after removing the first release area of the release film 114 (PF2) in the to-be-bonded block, bonding the bonding area of the polarizer 111 (POL) to one side of the OLED layer 115, and filling the filling block 118 into the pad area of the thin film substrate PI 116.

[0054] In this step, the bonding area of the polarizer 111 (POL) is directly bonded to the OLED layer 115, and the area of the bonding area is the same as that of the OLED layer 115. Before the polarizer 111 (POL) is bonded to the OLED layer 115, the first release area of the release film 114 (PF2) is removed to facilitate better contact between the polarizer 111 (POL) and the OLED layer 115. The filling block 118 is filled in the pad area of the thin film substrate PI 116 to provide support for the bonding of the pad area of the thin film substrate PI 116.

[0055] S230, after the other side of the OLED layer 115 is bonded to the non-pad area of the thin film substrate PI 116 and the BP layer 117 is bonded to the thin film substrate PI 116, the protective film 113 (PF1) is laser cut along the dividing line between the non-pad area and the pad area to remove part of the protective film 113 (PF1) and the filling block 118 attached to the protective film 113 (PF1).

[0056] In this step, the non-pad area of the thin film substrate PI 116 is in contact with the OLED layer 115 and the BP layer 117, respectively, and the bonding is more compact and less likely to produce bubbles. When the non-pad area of the thin film substrate PI 116 is bonded to the BP layer 117, the filling layer provides support for the non-pad area, making the bonding force between the thin film substrate PI 116 and the BP layer 117 more uniform, thereby avoiding the generation of bonding bubbles between the two.

[0057] For example, in order to further reduce the bonding bubbles generated between the thin film substrate PI 116 and the BP layer 117, the thickness of the release film 114 (PF2) can approach the thickness of the OLED layer 115, and the release film 114 (PF2) can completely replace the thickness of the OLED layer 115. At this time, the bonding of the thin film substrate PI 116 and the BP layer 117 can avoid the generation of bonding bubbles.

[0058] For example, in order to ensure that the tearing is completed in sequence, the peeling force between the polarizer 111 (POL) and the OLED layer 115 is greater than the peeling force between the protective film 113 (PF1) and the polarizer 111 (POL); the peeling force between the protective film 113 (PF1) and the polarizer 111 (POL) is greater than the peeling force between the polarizer 111 (POL) and the release film 114 (PF2), so that the product can be successfully produced, the production quality of the product is improved, and the defective rate of the product is effectively reduced.

[0059] In an example, the laser in the laser cutting is a carbon dioxide laser or a UV laser. The selection of the specific laser type needs to refer to the requirement of the product design on the laser heat effect.

[0060] In the above examples, the description of each example has its own focus, and the parts not described in detail in a certain example can be referred to the relevant description of other examples.

[0061] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. The above provides a detailed introduction to the ice making device provided by the embodiments of the present application. The specific examples are applied in the present application to describe the principles and implementation modes of the present application. The above example is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description of the present application should not be understood as the limitation of the present application.

Claims

1. A method of making a flexible panel, comprising: The flexible panel comprises a polarizing structure, an OLED layer, a thin film substrate and a BP layer which are sequentially stacked, the thin film substrate has a pad area which is not attached to the OLED layer; the method comprises: die cutting the polarizing structure along a cutting line in a direction from the second release film to the first release film to divide the second release film, the polarizing sheet and the protective film into an attachment block and a filling block, the attachment block comprises a first release area, an attachment area and a first protection area, the filling block comprises a second release area, a filling area and a second protection area; after removing the first release area of the second release film in the attachment block, attaching the attachment area of the polarizing sheet to one side of the OLED layer, and filling the pad area of the thin film substrate with the filling block; after attaching the other side of the OLED layer to the non-pad area of the thin film substrate and attaching the BP layer to the thin film substrate, removing the first release film and the filling block attached to the first release film.

2. The method of claim 1, wherein The peeling force between the polarizing sheet and the OLED layer is greater than the peeling force between the protective film and the polarizing sheet; the peeling force between the protective film and the polarizing sheet is greater than the peeling force between the polarizing sheet and the first release film and the peeling force between the polarizing sheet and the second release film, respectively.

3. A polarizing structure, characterized by, The polarizing structure is prepared by the method for manufacturing the flexible panel of claim 1 or 2; wherein the polarizing structure comprises a first release film, a protective film, a polarizing sheet and a second release film which are sequentially stacked and attached, the second release film, the polarizing sheet and the protective film are divided into two parts in a direction from the second release film to the first release film; the polarizing sheet comprises an attachment area for attaching to the OLED layer and a filling area for filling the pad area of the thin film substrate, the second release film comprises a first release area and a second release area, the first release area is arranged corresponding to the attachment area, and the second release area is arranged corresponding to the filling area; the protective film comprises a first protection area and a second protection area, the first protection area is arranged corresponding to the attachment area, and the second protection area is arranged corresponding to the filling area, the second protection area, the filling area and the second release area constitute a filling block for filling the pad area of the thin film substrate.

4. The polarizing structure of claim 3, wherein The thickness of the second release film approaches the thickness of the OLED layer.

5. The polarizing structure of claim 3, wherein The area of the first protection area is greater than the area of the second protection area, the area of the first release area is greater than the area of the second release area, and the area of the attachment area is greater than the area of the filling area.

6. A flexible panel, characterized by The flexible panel comprises a polarizing structure, an OLED layer, a thin film substrate and a BP layer which are sequentially stacked, the thin film substrate has a pad area which is not attached to the OLED layer; the method comprises:

7. A method of manufacturing a flexible panel, comprising: The flexible panel comprises a polarizing structure, an OLED layer, a thin film substrate and a BP layer which are sequentially stacked, the thin film substrate has a pad area which is not attached to the OLED layer; the method comprises: The cutting line of the polarizing structure in the direction from the release film to the protective film is die-cut to divide the release film and the polarizing sheet into a to-be-bonded block and a filling block, the to-be-bonded block comprising a first release area and a bonding area, and the filling block comprising a second release area and a filling area; After removing the first release area of the release film in the to-be-bonded block, the bonding area of the polarizing sheet is bonded to one side of the OLED layer, and the filling block is filled into the pad area of the thin film substrate; After the other side of the OLED layer is bonded to the non-pad area of the thin film substrate, and the BP layer is bonded to the thin film substrate, the protective film is laser-cut along the dividing line between the non-pad area and the pad area to remove part of the protective film and the filling block attached to the protective film.

8. The method of claim 7, wherein the flexible panel is made of a material selected from the group consisting of: paper, plastic, and fabric. The peeling force between the polarizing sheet and the OLED layer is greater than the peeling force between the protective film and the polarizing sheet, and the peeling force between the protective film and the polarizing sheet is greater than the peeling force between the polarizing sheet and the release film.

9. The method of claim 8, wherein the flexible panel is made of a material selected from the group consisting of: paper, plastic, and combinations thereof. The laser in the laser cutting is a carbon dioxide laser or a UV laser.

10. A polarizing structure, characterized by, The polarizing structure is prepared by the method for manufacturing the flexible panel according to any one of claims 7 to 9, the polarizing structure comprising a protective film, a polarizing sheet and a release film which are sequentially stacked and bonded, the release film and the polarizing sheet being divided into two parts in the direction from the release film to the protective film; the polarizing sheet comprising a bonding area for bonding with the OLED layer, and a filling area for filling the pad area of the thin film substrate, the release film comprising a first release area and a second release area, the first release area being arranged corresponding to the bonding area, and the second release area being arranged corresponding to the filling area; the filling area and the second release area constituting a filling block for filling the pad area of the thin film substrate.

11. A flexible panel, characterized by The polarizing structure is prepared by the method for manufacturing the flexible panel according to any one of claims 7 to 9, the polarizing structure comprising a protective film, a polarizing sheet and a release film which are sequentially stacked and bonded, the release film and the polarizing sheet being divided into two parts in the direction from the release film to the protective film; the polarizing sheet comprising a bonding area for bonding with the OLED layer, and a filling area for filling the pad area of the thin film substrate, the release film comprising a first release area and a second release area, the first release area being arranged corresponding to the bonding area, and the second release area being arranged corresponding to the filling area; the filling area and the second release area constituting a filling block for filling the pad area of the thin film substrate.

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