Gluing auxiliary jig and gluing method

Abstract

The application discloses a gluing auxiliary jig and a gluing method. The gluing auxiliary jig comprises a protection plate. The protection plate is used for shielding one side of a polaroid protection film close to a bending area or is used for shielding one side of the polaroid protection film close to the bending area and a surface of the polaroid protection film away from the polaroid, so that when point-like gluing is performed on the bending area of a screen body, the glue layer is prevented from spreading to the polaroid protection film, the adhesion between the glue layer of the bending area of the screen body and the polaroid protection film after the glue layer is solidified is eliminated, and then the glue layer is prevented from being separated.

Description

Technical Field

[0001] This application relates to the field of manufacturing technology, and in particular to an adhesive application auxiliary fixture and adhesive application method. Background Technology

[0002] Currently, in order to pursue a higher screen-to-body ratio and achieve a full-screen effect, mobile phones and wearable products often incorporate bending designs in the non-display areas of the screen to minimize the size of the bottom bezel of the module.

[0003] However, the solution of bending the non-display area of ​​the screen has some drawbacks: the bent area of ​​the screen will have tensile stress on the outer surface and compressive stress on the inner surface. During the bending process, the metal wires (i.e., twisted wires) inside the bent area of ​​the screen are very prone to cracking due to stress, which will cause display abnormalities after the pads are bent.

[0004] To minimize stress on the internal metal wires in the bending area of ​​the screen, current designs apply a protective adhesive (BPL) to the upper surface of the bending area. By adjusting the thickness of the protective adhesive, the metal wires are positioned on the neutral layer of the bending area. Currently, the protective adhesive is typically applied in a dot-matrix pattern, where the adhesive spreads to form an adhesive surface. Due to equipment and process limitations, the BPL adhesive may spread to the sides of the polarizer protective film, or even overflow onto it. In this case, after curing under UV light, the BPL adhesive adheres to the polarizer protective film. During the subsequent removal of the polarizer protective film, the BPL adhesive may be peeled off along with the protective film, causing it to detach. Summary of the Invention

[0005] The adhesive coating auxiliary fixture and adhesive coating method provided in this application solve the technical problem of BPL adhesive diffusion to the polarizer protective film in the prior art.

[0006] To solve the above-mentioned technical problems, the first technical solution provided in this application is: to provide an adhesive application auxiliary fixture, which can be used to prepare protective adhesive in the bending area of ​​a display panel, the display panel including a planar area adjacent to the bending area, and a polarizer and a polarizer protective film are also provided on the side of the display panel for applying the protective adhesive, the polarizer and the polarizer protective film being sequentially stacked on the planar area; the adhesive application auxiliary fixture includes a protective plate for blocking the side of the polarizer protective film near the bending area, or for blocking the side of the polarizer protective film near the bending area and the surface of the polarizer protective film away from the polarizer.

[0007] In one embodiment, the protective plate includes a first body and a second body that are intersecting and connected to each other. The first body is used to shield the surface of the polarizer protective film near the bending area, and the second body is used to shield the surface of the polarizer protective film away from the polarizer.

[0008] In one embodiment, the second body has an air extraction hole on its surface away from the polarizer protective film; the protective plate has an adsorption hole, which is located on the surface of the first body for bonding with the polarizer protective film and / or on the surface of the second body for bonding with the polarizer protective film; the protective plate has an airflow channel inside, and the adsorption hole and the air extraction hole are connected through the airflow channel; the air extraction hole is used to connect a vacuum pump so that the protective plate can be adsorbed and fixed to the polarizer protective film.

[0009] In one embodiment, the protective plate is made of a porous material, and the pores in the protective plate itself serve as the aforementioned adsorption pores, airflow channels, and extraction pores.

[0010] The adhesive application auxiliary fixture also includes a dense coating, which is attached to the protective plate and covers the surface of the protective plate except for the surface used to adhere to the polarizer protective film and the area where the air extraction hole is located.

[0011] Preferably, the dense coating also has an anti-stick function, or the surface of the dense coating away from the protective plate is provided with an anti-stick coating.

[0012] In one embodiment, the protective plate is made of a dense material;

[0013] The first body has a first cavity inside, and the second body has a second cavity inside. The first cavity and the second cavity are connected and cooperate to form the airflow channel. There are multiple adsorption holes, some of which are located on the cavity wall of the first cavity near the polarizer protective film, and others are located on the cavity wall of the second cavity near the polarizer protective film. The second cavity has an air extraction hole on the cavity wall away from the polarizer protective film.

[0014] Preferably, the adhesive application fixture further includes an anti-stick coating, which is attached to the protective plate and covers the surface of the protective plate except for the surface that contacts the polarizer protective film and the area where the air extraction hole is located.

[0015] In one embodiment, a sealing ring is provided on the surface of the first body for bonding with the polarizer protective film and / or on the surface of the second body for bonding with the polarizer protective film, and the adsorption hole is located inside the sealing ring.

[0016] Preferably, the surface of the first body used to adhere to the polarizer protective film shares one edge with the surface of the second body used to adhere to the polarizer protective film, and the sealing ring is provided on the edges of the surfaces of the first body and the second body used to adhere to the polarizer protective film, except for the shared edge.

[0017] In one embodiment, a connector is further included, fixed to the second body; the connector is used to connect an alignment device, the alignment device being used to align the protective plate with the polarizer protective film;

[0018] Preferably, the connector is also used to connect the air extraction port to the vacuum device; the connector has a hollow inner cavity, and the hollow inner cavity of the connector is in communication with the air extraction port.

[0019] In one embodiment, the length of the first body is greater than the thickness of the polarizer protective film; and / or, the thickness of the second body is greater than the thickness of the first body.

[0020] To address the aforementioned technical problems, the second technical solution provided in this application is: a coating method for preparing a protective adhesive in the bending area of ​​a display panel, wherein the display panel includes a bending area and a planar area adjacent to the bending area, and the polarizer and the polarizer protective film are sequentially stacked on the planar area of ​​the display panel; the coating method includes the following steps:

[0021] Align the adhesive application auxiliary fixture with the polarizer protective film so that the protective plate of the adhesive application auxiliary fixture blocks the side of the polarizer protective film near the bending area, or blocks the side of the polarizer protective film near the bending area and the surface of the polarizer protective film away from the polarizer; and

[0022] A protective adhesive is prepared in the bending area. The protective adhesive is located on the side of the display panel where the polarizer and the polarizer protective film are provided, and is adjacent to the polarizer.

[0023] In one embodiment, the protective plate includes a first body and a second body that are intersecting and interconnected. The step of aligning the adhesive-applying auxiliary fixture with the polarizer protective film includes:

[0024] The first body is attached to the surface of the polarizer protective film near the bending area, and the second body is attached to the surface of the polarizer protective film away from the polarizer.

[0025] Preferably, the second body has an air extraction hole on its surface away from the polarizer protective film, and the protective plate has an adsorption hole located on the surface of the first body for bonding with the polarizer protective film and / or the surface of the second body for bonding with the polarizer protective film. The protective plate has an airflow channel inside, and the adsorption hole and the air extraction hole are connected through the airflow channel. The adhesive application method further includes:

[0026] Suction is performed through the air extraction hole, the airflow channel, and the adsorption hole to adsorb and fix the protective plate onto the polarizer protective film.

[0027] Preferably, the step of preparing the protective adhesive in the bending area includes:

[0028] The distance between the protective plate disposed on the portion of the polarizer protective film away from the polarizer surface and the adhesive layer of the bending area is greater than zero.

[0029] The beneficial effects of this application are as follows: Unlike the prior art, this application discloses an adhesive application auxiliary fixture and an adhesive application method. The adhesive application auxiliary fixture includes a protective plate, which is used to shield the side of the polarizer protective film near the bending area, or to shield the side of the polarizer protective film near the bending area and the surface of the polarizer protective film away from the polarizer. This prevents the adhesive layer from spreading to contact the polarizer protective film when applying adhesive in a dotted manner to the bending area of ​​the screen, thus eliminating the adhesion between the adhesive layer and the polarizer protective film after the adhesive layer in the bending area of ​​the screen has cured, and thereby preventing the adhesive layer from detaching. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0031] Figure 1 A partial structural diagram of a display panel in the prior art;

[0032] Figure 2 yes Figure 1 The diagram shown is a structural schematic of an abnormal adhesive coating on a display panel.

[0033] Figure 3 yes Figure 1 The diagram shows another structural schematic of the abnormal adhesive application on the display panel.

[0034] Figure 4 This is a schematic diagram of the adhesive application auxiliary fixture provided in the embodiments of this application;

[0035] Figure 5 yes Figure 4 The diagram shows the structure of the protective plate.

[0036] Figure 6 yes Figure 4 A cross-sectional schematic diagram of one embodiment of the adhesive application auxiliary fixture shown;

[0037] Figure 7 yes Figure 4 A cross-sectional schematic diagram of another embodiment of the adhesive application auxiliary fixture shown;

[0038] Figure 8 yes Figure 4 The diagram shown illustrates the structure of the adhesive application auxiliary fixture used in the adhesive application process of display panels.

[0039] Figure 9 This is a schematic flowchart of the adhesive application method provided in the embodiments of this application. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0041] In the following description, specific details such as particular system architectures, interfaces, and technologies are presented for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of this application.

[0042] The terms "first," "second," and "third" in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the stated features. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indications also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0043] In this document, the term "embodiment" means that a particular 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 in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0044] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] Please see Figures 1-3 , Figure 1 A partial structural diagram of a display panel in the prior art. Figure 2 yes Figure 1 The diagram shown illustrates a structural issue with an abnormal adhesive coating on the display panel. Figure 3 yes Figure 1 The diagram shows another structural schematic of an abnormal adhesive coating on the display panel.

[0046] The display panel includes a screen body 11, a polarizer 12, and a polarizer protective film 13. The polarizer 12 is disposed on the light-emitting side of the screen body 11, and the polarizer protective film 13 is disposed on the side of the polarizer 12 away from the screen body 11. Specifically, the screen body 11 includes a bending region 111 and a planar region adjacent to the bending region 111. In one embodiment, a planar region is adjacent to each other on opposite sides of the bending region 111, namely a first planar region 112 and a second planar region 113. The polarizer 12 and the polarizer protective film 13 are sequentially stacked on the planar regions. In one embodiment, the polarizer 12 and the polarizer protective film 13 are sequentially stacked on the first planar region 112 of the screen body 11. During the bending process of the screen body 11 located in the bending region 111, its outer surface is subjected to tensile stress, and its inner surface is subjected to compressive stress. The metal wire (not shown) located in the bending region 111 is very prone to cracking due to stress during the bending process. To minimize stress on the metal wires in the bending area 111, a protective adhesive 14 (BPL) is applied to the surface of the screen 11 located in the bending area 111. The thickness of the protective adhesive 14 is adjusted to ensure the metal wires are positioned on the neutral layer of the bending area 111. The display panel has the aforementioned polarizer 12 and polarizer protective film 13 on the side where the protective adhesive 14 is applied. However, if the protective adhesive 14 is applied using a dot-matrix application method, the dot-matrix adhesive spreads to form an adhesive surface. Due to equipment and process limitations, the protective adhesive 14 may spread to the side of the polarizer protective film 13 (e.g., ...). Figure 2 As shown), it even overflows onto the surface of the polarizer protective film 13 away from the polarizer 12 (e.g. Figure 3As shown, after UV curing, the protective adhesive 14 adheres to the polarizer protective film 13. During the subsequent process of removing the polarizer protective film 13, the protective adhesive 14 may be torn off along with it, causing the protective adhesive 14 to detach.

[0047] In view of this, this application provides an adhesive application auxiliary fixture, which can be used to prepare protective adhesive 14 in the bending area 111 of the display panel, so as to prevent the protective adhesive 14 from spreading to contact with the polarizer protective film 13, eliminating the adhesion between the protective adhesive 14 and the polarizer protective film 13 after UV curing, and thus eliminating the problem of poor peeling of the protective adhesive 14. Specifically, please refer to... Figures 4-8 , Figure 4 This is a schematic diagram of the adhesive application auxiliary fixture provided in the embodiments of this application. Figure 5 yes Figure 4 The diagram shows the structure of the protective plate. Figure 6 yes Figure 4 The diagram shows a cross-sectional view of one embodiment of the adhesive application auxiliary fixture. Figure 7 yes Figure 4 A cross-sectional schematic diagram of another embodiment of the adhesive application auxiliary fixture shown. Figure 8 yes Figure 4 The diagram shows the structure of the adhesive application auxiliary fixture used in the adhesive application process of display panels.

[0048] The adhesive application auxiliary fixture includes a protective plate 21.

[0049] In one embodiment, the protective plate 21 is a flat plate, used to shield the side of the polarizer protective film 13 near the area to be coated with adhesive on the screen 11; wherein, the area to be coated with adhesive on the screen 11 refers to the area for applying the protective adhesive 14, and the area for applying the protective adhesive 14 is the bending area 111. That is, the protective plate 21 is used to shield the side of the polarizer protective film 13 near the bending area 111. By shielding the side of the polarizer protective film 13 near the bending area 111 on the screen 111 with the protective plate 21, the adhesive layer is prevented from spreading to the side of the polarizer protective film 13 when applying adhesive in a dotted manner to the bending area 111. The material of the protective plate 21 is designed according to needs, having a certain degree of hardness, sufficient to shield the side of the polarizer protective film 13 near the bending area 111 on the screen 11. Optionally, the protective plate 21 is used in the adhesive coating process. The protective plate 21 is spaced apart from the side of the polarizer protective film 13 near the bending area 111 of the screen body 11, and the end face of the protective plate 21 is attached to the screen body 11 to prevent the adhesive layer from spreading through the gap between the protective plate 21 and the polarizer protective film 13 and contacting the side of the polarizer protective film 13. Alternatively, the protective plate 21 is used in the adhesive coating process, and the protective plate 21 is attached to the side of the polarizer protective film 13 near the bending area 111 of the screen body 11, and the protective plate 21 completely covers the side of the polarizer protective film 13 near the bending area 111 of the screen body 11. For example, the protective plate 21 is vacuum-adsorbed onto the side of the polarizer protective film 13 near the bending area 111 of the screen body 11.

[0050] In one embodiment, the protective plate 21 is used to shield the side of the polarizer protective film 13 near the bending area 111 and the surface of the polarizer protective film 13 away from the polarizer 12. By shielding the side of the polarizer protective film 13 near the bending area 111 and the surface of the polarizer protective film 13 away from the polarizer 12 with the protective plate 21, the adhesive layer is prevented from spreading to the side of the polarizer protective film 13 or even overflowing onto the surface of the polarizer protective film 13 away from the polarizer 12 when the bending area 111 is dotted with adhesive.

[0051] Specifically, the protective plate 21 includes a first body 211 and a second body 212 that are intersecting and interconnected. The first body 211 is disposed on the side of the polarizer protective film 13 near the bending area 111, and the second body 212 is attached to the surface of the polarizer protective film 13 away from the screen 11. The included angle formed between the first body 211 and the second body 212 is a first value, and the included angle formed between the side of the polarizer protective film 13 near the bending area 111 of the screen 11 and the surface of the polarizer protective film 12 away from the polarizer 12 is a second value. The first value and the second value are the same. Optionally, the protective plate 21 is used in the adhesive coating process, with the first body 211 and the side of the polarizer protective film 13 near the bending area 111 spaced apart, and the end face of the first body 211 attached to the screen 11, to prevent the adhesive layer from spreading through the gap between the protective plate 21 and the polarizer protective film 13 to contact the side of the polarizer protective film 13. Optionally, the protective plate 21 is used in the adhesive coating process. The first body 211 is attached to the side of the polarizer protective film 13 near the bending area 111. That is, the first body 211 is used to attach to the surface of the polarizer protective film 13 near the bending area 111; and the first body 211 completely covers the side of the polarizer protective film 13 near the bending area 111.

[0052] The following section provides a more detailed description of the adhesive application auxiliary fixture, taking the bonding of the first body 211 and the second body 212 to the surface of the polarizer protective film 13 as examples.

[0053] In one embodiment, the protective plate 21 is fixed to the polarizer protective film 13 by vacuum adsorption. This arrangement ensures that the adhesive application auxiliary fixture remains tightly adsorbed onto the polarizer protective film 13 throughout the application of the protective adhesive 14 and subsequent curing processes, guaranteeing the stability of the adhesive application auxiliary fixture during operation.

[0054] Please see Figure 6 and Figure 7 Specifically, the surface of the second body 212 away from the polarizer protective film 13 has an air extraction hole 21a, which is used to connect a vacuum pump so that the protective plate 21 can be adsorbed and fixed to the polarizer protective film 13.

[0055] Optionally, only the surface of the first body 211 that is used to adhere to the polarizer protective film 13 has a plurality of adsorption holes 21b, and the protective plate 21 has an airflow channel 21c inside, with the adsorption holes 21b and the air extraction hole 21a connected through the airflow channel 21c. By adsorbing the first body 211 onto the side of the polarizer protective film 13 near the bending area 111, the second body 212 is also fixed. For example, the first body 211 and the second body 212 are first aligned with the polarizer protective film 13, and then the air extraction hole 21a is connected to a vacuum device to perform vacuum adsorption on the first body 211, so that the first body 211 is adhered to the side of the polarizer protective film 13 near the bending area 111 of the screen body 11, and the second body 212 is adhered to the surface of the polarizer protective film 13 away from the screen body 11.

[0056] Optionally, only the surface of the second body 212 that is used to adhere to the polarizer protective film 13 has a plurality of adsorption holes 21b. The second body 212 has an airflow channel 21c inside, and the adsorption holes 21b and the air extraction hole 21a are connected through the airflow channel 21c. By adsorbing the second body 212 onto the surface of the polarizer protective film 13 away from the polarizer 12, the first body 211 is also fixed. For example, the first body 211 and the second body 212 are first aligned with the polarizer protective film 13, and then the air extraction hole 21a is connected to a vacuum device to perform vacuum adsorption on the second body 212, so that the first body 211 is adhered to the side of the polarizer protective film 13 near the bending area 111 of the screen 11, and the second body 212 is adhered to the surface of the polarizer protective film 13 away from the screen 11.

[0057] Optionally, the surfaces of the first body 211 and the second body 212 that are used to adhere to the polarizer protective film 13 are respectively provided with a plurality of adsorption holes 21b. The protective plate 21 has an airflow channel 21c inside, and the adsorption holes 21b and the suction hole 21a are connected through the airflow channel 21c. For example, the suction hole 21a is connected to a vacuum device to perform vacuum adsorption on the first body 211 and the second body 212, so that the first body 211 is adhered to the side of the polarizer protective film 13 near the bending area 111 of the screen body 11, and the second body 212 is adhered to the surface of the polarizer protective film 13 away from the screen body 11.

[0058] Optional, such as Figure 6As shown, the protective plate 21 is made of a porous material. The pores in the protective plate 21 itself serve as the aforementioned adsorption pores 21b, airflow channels 21c, and extraction pores 21a. The entire surface of the protective plate 21, except for the surface used to adhere to the polarizer protective film 13 and the area where the extraction pores 21a are located, is covered with a dense coating 213. The dense coating 213 also has an anti-stick function; alternatively, the surface of the dense coating 213 facing away from the protective plate 21 has an anti-stick coating 214 to prevent the protective adhesive 14 from adhering to the adhesive application auxiliary fixture. When the adhesive application auxiliary fixture is removed after application, the protective adhesive 14 is torn off along with the adhesive, causing the protective adhesive 14 to detach. For example, the material of the protective plate 21 can be silicon carbide or aluminum oxide. For example, the anti-stick coating 214 can be Teflon.

[0059] Optional, such as Figure 7 As shown, the protective plate 21 is made of a dense material. The surfaces of the first body 211 and the second body 212 that are used to adhere to the polarizer protective film 13 are each provided with a plurality of adsorption holes 21b. The first body 211 has a first cavity 211a, and the second body 212 has a second cavity 212a. The first cavity 211a and the second cavity 212a are connected and cooperate to form an airflow channel 21c. The cavity wall of the first cavity 211a near the polarizer protective film 13 has a plurality of first through holes, which are adsorption holes 21b on the surface of the first body 211 used to adhere to the polarizer protective film 13. The cavity wall of the second cavity 212a near the polarizer protective film 13 has a plurality of second through holes, which are adsorption holes 21b on the surface of the second body 212 used to adhere to the polarizer protective film 13. In other words, some of the adsorption holes 21b are located on the cavity wall of the first cavity 211a near the polarizer protective film 13, and the other part of the adsorption holes 21b are located on the cavity wall of the second cavity 212a near the polarizer protective film 13. The cavity wall of the second cavity 212a away from the polarizer protective film 13 is provided with an air extraction hole 21a.

[0060] The first body 211 has several adsorption holes 21b distributed on its surface for bonding with the polarizer protective film 13. The first body 211 has a first cavity 211a, and the second body 212 has a second cavity 212a. The first cavity 211a and the second cavity 212a are connected and cooperate to form an airflow channel 21c. The cavity wall of the first cavity 211a near the polarizer protective film 13 has several first through holes, which are adsorption holes 21b on the surface of the first body 211 for bonding with the polarizer protective film 13. In other words, the adsorption holes 21b are located on the cavity wall of the first cavity 211a near the polarizer protective film 13. The cavity wall of the second cavity 212a away from the polarizer protective film 13 has suction holes 21a.

[0061] The second body 212 has a plurality of adsorption holes 21b distributed on its surface for bonding with the polarizer protective film 13; the second body 212 has a second cavity 212a inside, which serves as an airflow channel 21c; the cavity wall of the second cavity 212a near the polarizer protective film 13 has a plurality of second through holes, which are adsorption holes 21b on the surface of the second body 212 for bonding with the polarizer protective film 13, that is, the adsorption holes 21b are located on the cavity wall of the second cavity 212a near the polarizer protective film 13. The cavity wall of the second cavity 212a away from the polarizer protective film 13 has an exhaust hole 21a.

[0062] The entire surface of the protective plate 21, except for the surface used to adhere to the polarizer protective film 13 and the area where the air extraction hole 21a is located, is covered with an anti-stick coating 214 to prevent the protective adhesive 14 from adhering to the adhesive application auxiliary fixture. When the adhesive application auxiliary fixture is removed after the adhesive application is completed, the protective adhesive 14 is torn off together with it, causing the protective adhesive 14 to fall off.

[0063] Optional, such as Figure 5 As shown, a sealing ring 215 is provided around the periphery of the surface of the protective plate 21 that is used to adhere to the polarizer protective film 13. This helps to eliminate gaps between the periphery of the protective plate 21 and the surface of the polarizer protective film 13, allowing the protective plate 21 to adhere more tightly to the surface of the polarizer protective film 13. This avoids the situation where liquid protective adhesive 14 is sucked into the adhesive application auxiliary fixture during the vacuuming process due to gaps between the protective plate 21 and the side of the polarizer protective film 12 near the bending area 111 of the screen 11, which would prevent the adhesive application auxiliary fixture from effectively preventing the protective adhesive 14 from spreading to the side of the polarizer protective film 12. Specifically, a sealing ring 215 is provided on the surface of the first body 211 that is used to adhere to the polarizer protective film 13 and / or on the surface of the second body 212 that is used to adhere to the polarizer protective film 13, and the adsorption hole 21b is located inside the sealing ring 215.

[0064] For example, the first body 211 has a first sub-sealing ring on the periphery of the surface of its body that is to be bonded to the polarizer protective film 13, and the second body 212 has a second sub-sealing ring on the periphery of the surface of its body that is to be bonded to the polarizer protective film 13. The first and second sub-sealing rings are both annular. The first and second sub-sealing rings can be partially shared or completely independent of each other. The first and second sub-sealing rings together form the sealing ring 215 described above.

[0065] For example, the surface of the first body 211 used to adhere to the polarizer protective film 13 shares an edge with the surface of the second body 212 used to adhere to the polarizer protective film 13. The edges of the surfaces of the first body 211 and the second body 212 used to adhere to the polarizer protective film 13, excluding the shared edge, are provided with sealing rings 215. The sealing rings 215 located in the first body 211 portion and the sealing rings 215 located in the second body 212 portion are interconnected (e.g., ...). Figure 5 (As shown).

[0066] Continue reading Figure 4 The adhesive application auxiliary fixture also includes a connector 22, which is fixed to the second body 212. The connector 22 is used to connect an alignment device, which is used to align the protective plate 21 with the polarizer protective film 13. Alignment refers to placing the protective plate 21 on... Figure 8 The position shown is indicated. The connector 22 is fixed to the second body 212 to avoid affecting the adhesive application process. The connector 22 includes a first portion 221 and a second portion 222 that are interconnected. The first portion 221 is connected to the second body 212. The shape of the end of the first portion 221 near the second body 212 is the same as the shape of the end of the first portion 221 near the second portion 222. The size of the end of the first portion 221 near the second body 212 is larger than the size of the end of the first portion 221 near the second portion 222. Along the direction away from the second body 212, the cross-sectional shape and size of the second portion 222 are consistent.

[0067] In one embodiment, the connector 22 is also used to connect the suction port 21a to the vacuum device; the connector 22 has a hollow inner cavity, which communicates with the suction port 21a. With this arrangement, the connector 22 has a sufficiently large surrounding space, facilitating connection with the alignment device or the vacuum device. In other embodiments, the adhesive application auxiliary fixture also includes a vacuum connector, spaced apart from the connector 22 and fixed to the second body 212; the vacuum connector connects the suction port 21a to the vacuum device.

[0068] In one embodiment, the length L1 of the first body 211 is greater than the thickness of the polarizer protective film 13 of the display panel to be coated; after the protective plate 21 and the polarizer protective film 13 are aligned, the first body 211 completely covers the surface of the polarizer protective film 13 near the bending area 111 of the screen body 11, and extends to the surface of the polarizer 12 near the bending area 111 of the screen body 11 (e.g., Figure 8 (As shown); that is, the first body 211 completely covers the surface of the polarizer protective film 13 near the bending area 111 of the screen body 11, while also covering at least a portion of the surface of the polarizer 12 near the bending area 111. This arrangement better avoids contact between the protective adhesive 14 and the surface of the polarizer protective film 13 near the bending area 111. Optionally, the first body 211 covers a portion of the side surface of the polarizer 12 near the bending area 111. Optionally, the first body 211 covers the entire side surface of the polarizer 12 near the bending area 111.

[0069] The length L2 of the second body 212 is determined according to the requirements of the alignment device and the vacuuming device.

[0070] In one embodiment, the thickness of the second body 212 is greater than the thickness of the first body 211. The thickness of the first body 211 is as small as possible to avoid affecting the area of ​​the liquid protective adhesive 14 that diffuses and forms an adhesive layer covering the bending area 111. It only needs to have a certain degree of hardness to block the side of the polarizer protective film 13. The thickness of the second body 212 is such that the surface of the second body 212 facing away from the polarizer protective film 13 is always higher than the protective adhesive 14. That is, the height of the surface of the second body 212 facing away from the polarizer protective film 13 is greater than the maximum thickness of the protective adhesive 14, so as to prevent the protective adhesive 14 from overflowing onto the surface of the second body 212 facing away from the polarizer protective film 13 and affecting the removal of the adhesive application auxiliary fixture after the adhesive application is completed.

[0071] The application of the adhesive coating auxiliary fixture in the adhesive coating process is as follows: the alignment device drives the auxiliary adhesive coating fixture to perform initial alignment with the polarizer protective film 13, then the vacuum device is activated, and the protective plate 21 is tightly adsorbed onto the surface of the polarizer protective film 13. Then, dot-shaped adhesive is applied to the bending area 111 of the screen body 11. Due to the obstruction of the adhesive coating auxiliary fixture, the protective adhesive 14 will at most contact the side of the polarizer 12 during the self-diffusion process after dot-shaped application, but will not contact the polarizer protective film 13. Therefore, the protective adhesive 14 will not be torn off along with the polarizer protective film 13 in the subsequent process of removing the polarizer protective film 13. The adhesive coating auxiliary fixture is removed after the protective adhesive 14 has cured.

[0072] Please see Figure 9 , Figure 9 This is a schematic flowchart of the adhesive application method provided in the embodiments of this application.

[0073] This application also provides a method for applying adhesive using the adhesive application auxiliary fixture of the above embodiments. The adhesive application method is used to prepare protective adhesive 14 in the bending area 111 of the display panel. The adhesive application method specifically includes:

[0074] Step S01: Align the adhesive application auxiliary fixture with the polarizer protective film so that the protective plate of the adhesive application auxiliary fixture blocks the side of the polarizer protective film near the bending area, or blocks the side of the polarizer protective film near the bending area and the surface of the polarizer protective film away from the polarizer.

[0075] The structure of the protective plate 21 and its positional relationship with the polarizer protective film 13 can be found in the above description and will not be repeated here.

[0076] In one embodiment, the protective plate 21 extends from the side of the polarizer protective film 13 near the bending area 111 of the screen body 11 to the side of the polarizer 12 near the bending area 111 of the screen body 11, thus better preventing the protective adhesive 14 from contacting the surface of the polarizer protective film 13 near the bending area 111. When the protective plate 21 includes a first body 211 and a second body 212, it is aligned and attached to the polarizer protective film 13 such that the first body 211 is attached to the surface of the polarizer protective film 13 near the bending area 111 and the second body 212 is attached to the surface of the polarizer protective film 13 away from the polarizer 12, and the first body 211 covers at least a portion of the surface of the polarizer 12 near the bending area 111.

[0077] The second body 212 has an air extraction hole 21a on its surface away from the polarizer protective film 13. The protective plate 21 has an adsorption hole 21b located on the surface of the first body 211 used for bonding with the polarizer protective film 13 and / or the surface of the second body 212 used for bonding with the polarizer protective film 13. The protective plate 21 has an airflow channel 21c inside, and the adsorption hole 21b communicates with the air extraction hole 21a through the airflow channel 21c. The adhesive application method further includes the step of adsorbing and fixing the protective plate 21 onto the polarizer protective film 13. Specifically, suction is performed through the air extraction hole 21a, the airflow channel 21c, and the adsorption hole 21b to adsorb and fix the protective plate 21 onto the polarizer protective film 13.

[0078] Step S02: Prepare a protective adhesive in the bending area. The protective adhesive is located on the side of the display panel where the polarizer and the polarizer protective film are located and is adjacent to the polarizer.

[0079] As mentioned above, during the process of preparing the protective adhesive in the bending area, the protective plate 21 is adsorbed and fixed on the polarizer protective film, so that the protective plate 21 remains fixed relative to the polarizer protective film, ensuring the positional accuracy of the protective adhesive 14.

[0080] More specifically, when the protective plate 21 is not removed, the protective adhesive contacts or connects the polarizer and the first body 211 of the protective plate 21, but does not contact or connect the polarizer protective film.

[0081] In one embodiment, the distance between the protective plate 21 disposed on the surface of the polarizer protective film 13 away from the polarizer 12 and the adhesive layer of the bending area 111 is greater than zero. That is, when the protective plate 21 includes a first body 211 and a second body 212, the thickness of the second body 212 must ensure that the surface of the second body 212 away from the polarizer protective film 13 is always higher than the protective adhesive 14. In other words, the height of the surface of the second body 212 away from the polarizer protective film 13 is greater than the maximum thickness of the protective adhesive 14, so as to avoid the protective adhesive 14 overflowing onto the surface of the second body 212 away from the polarizer protective film 13, affecting the removal of the adhesive application auxiliary fixture after the adhesive application is completed.

[0082] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A gluing aid jig, characterized by, The present application discloses a protective glue preparation auxiliary jig for a display panel, which comprises a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective plate, a protective ​ ​ ​ ​ 2. The gluing aid jig according to claim 1, wherein ​ 3. The gluing aid jig according to claim 2, wherein ​ ​ 4. The gluing aid jig according to claim 3, wherein ​ 5. The gluing aid jig according to claim 3, wherein ​ 6. The gluing aid jig according to claim 2, wherein ​ ​ ​ 7. The gluing aid jig according to claim 2, wherein ​ 8. The gluing aid jig according to claim 7, wherein The surface of the first body for adhering to the polarizing plate protective film shares one edge with the surface of the second body for adhering to the polarizing plate protective film, and the edges of the surfaces of the first body and the second body for adhering to the polarizing plate protective film, except the shared edge, are provided with the sealing ring.

9. The gluing aid jig according to claim 2, wherein The connecting piece is further used for connecting the vacuumizing hole and the vacuumizing device, and the connecting piece has a hollow inner cavity which is in communication with the vacuumizing hole. The length of the first body is greater than the thickness of the polarizing plate protective film.

10. The gluing aid jig according to claim 1, wherein The thickness of the second body is greater than the thickness of the first body. The method for preparing a protective glue in a bending area of a display panel, the display panel comprising a bending area and a planar area adjacent to the bending area, a polarizing plate and a polarizing plate protective film being stacked in the planar area of the display panel in sequence; the polarizing plate protective film being configured to be torn off after the protective glue is formed; the glue coating method comprising the following steps:

11. A method of applying glue, characterized by aligning a glue coating auxiliary jig with the polarizing plate protective film so that a protective plate of the glue coating auxiliary jig shields one side of the polarizing plate protective film close to the bending area and a surface of the polarizing plate protective film away from the polarizing plate; the protective plate being fixed to the polarizing plate protective film by vacuum adsorption; and preparing a protective glue in the bending area, the protective glue being located on one side of the display panel provided with the polarizing plate and the polarizing plate protective film and being adjacent to the polarizing plate; wherein the protective plate comprises a first body and a second body which are arranged in intersection and connected to each other, and the step of aligning the glue coating auxiliary jig with the polarizing plate protective film comprises: aligning and adhering the first body to a surface of the polarizing plate protective film close to the bending area and the second body to a surface of the polarizing plate protective film away from the polarizing plate. The second body is provided with a vacuumizing hole on a surface away from the polarizing plate protective film, the protective plate is provided with an adsorption hole, the adsorption hole is arranged on a surface of the first body for adhering to the polarizing plate protective film and a surface of the second body for adhering to the polarizing plate protective film, the protective plate has an airflow channel inside, the adsorption hole is in communication with the vacuumizing hole through the airflow channel, and the step of aligning the glue coating auxiliary jig with the polarizing plate protective film further comprises:

12. The method of claim 11, wherein, sucking through the vacuumizing hole, the airflow channel and the adsorption hole so that the protective plate is adsorbed and fixed to the polarizing plate protective film. The step of preparing a protective glue in the bending area comprises:

13. The method of claim 11, wherein, The distance between the surface of the protective plate away from the polarizing plate protective film and the glue layer of the bending area is greater than zero. ​

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