Method for adjusting warpage of polarizing plate and adjusting device

Abstract

The application relates to a polaroid warping adjustment method and an adjustment device. The polaroid warping adjustment method comprises the following steps: providing a polaroid body and a protective film; making the temperature difference of the polaroid body and the protective film a target temperature difference, the target temperature difference being greater than zero or less than zero; bonding the polaroid body and the protective film with the temperature difference being the target temperature difference to form a polaroid; and making the temperature difference of the polaroid body and the protective film in the polaroid zero, so that the polaroid is deformed in a warping mode corresponding to the target temperature difference. Therefore, the temperature difference of the polaroid body and the protective film can be adjusted before the polaroid body and the protective film are bonded, the warping degree of the polaroid can be adjusted, and the finished polaroid can meet the delivery quality requirement.

Description

[Technical Field]

[0001] This application relates to the field of display technology, specifically to a method and device for adjusting the warpage of a polarizer. [Background Technology]

[0002] A polarizer, also known as a polarizing film, is an optical thin film composed of multiple layers of polymer materials. Liquid crystal displays rely on two polarizers closely attached to the liquid crystal glass to form the liquid crystal panel.

[0003] In the production process of polarizers, each layer of film is continuously added and compounded through tensile stress. Due to the differences in the moisture permeability, heat shrinkage performance, mechanical properties and film thickness of different film materials, controlling the warpage of polarizers is a major challenge in the production process, which makes it difficult to ensure the high quality of the finished polarizer. [Summary of the Invention]

[0004] This application provides a method and device for adjusting the warpage of a polarizer, so as to control the degree of warpage of the polarizer and thus ensure that the finished polarizer meets the quality requirements for leaving the factory.

[0005] To address the aforementioned problems, this application provides a method for adjusting the warpage of a polarizer. The method includes: providing a polarizer body and a protective film; setting the temperature difference between the polarizer body and the protective film to a target temperature difference, where the target temperature difference is greater than zero or less than zero; bonding the polarizer body and the protective film together to form a polarizer; and reducing the temperature difference between the polarizer body and the protective film to zero, thereby causing the polarizer to warp and deform in accordance with the target temperature difference.

[0006] Specifically, adjusting the temperature of the polarizer body and the protective film to achieve the target temperature difference includes adjusting the temperature of the polarizer body to achieve the target temperature difference.

[0007] Specifically, adjusting the temperature of the polarizer body includes: placing the polarizer body into a temperature-controlled oven; and adjusting the temperature of the polarizer body using the temperature-controlled oven.

[0008] The method for adjusting the warpage of the polarizer before bonding the polarizer body and the protective film (with a temperature difference equal to the target temperature difference) to form the polarizer further includes: introducing the protective film into the bonding chamber; moving the polarizer body (with a temperature difference equal to the target temperature difference) from the temperature-controlled oven into the bonding chamber; and bonding the polarizer body and the protective film (with a temperature difference equal to the target temperature difference) to form the polarizer. Specifically, this includes bonding the polarizer body and the protective film (with a temperature difference equal to the target temperature difference) in the bonding chamber to form the polarizer.

[0009] Specifically, making the temperature difference between the polarizer body and the protective film in the polarizer zero includes: making the temperature of the polarizer body in the polarizer match the indoor temperature.

[0010] To address the aforementioned problems, this application also provides a device for adjusting polarizer warpage. This device is used to bond the polarizer body to a protective film and includes: a first temperature adjustment unit for adjusting the temperature difference between the polarizer body and the protective film to a target temperature difference, wherein the target temperature difference is greater than zero or less than zero; a bonding unit for bonding the polarizer body and the protective film to form a polarizer; and a second temperature adjustment unit for reducing the temperature difference between the polarizer body and the protective film to zero, thereby causing the polarizer to warp and deform in accordance with the target temperature difference.

[0011] Specifically, the first temperature adjustment unit is used to adjust the temperature of the polarizer body so that the temperature difference between the polarizer body and the protective film is the target temperature difference.

[0012] The first temperature control unit includes: a temperature control oven; a conveying subunit for bringing the polarizer body into the temperature control oven; and a temperature control subunit for adjusting the temperature of the polarizer body through the temperature control oven.

[0013] The device for adjusting the warpage of the polarizer further includes: a first conveying unit for bringing the protective film into the bonding chamber; a second conveying unit for moving the polarizer body, whose temperature difference with the protective film is a target temperature difference, from the temperature-controlled oven to the bonding chamber; the bonding unit is specifically used to bond the polarizer body and the protective film, whose temperature difference is a target temperature difference, together in the bonding chamber to form a polarizer.

[0014] Specifically, the second temperature adjustment unit is used to adjust the temperature of the polarizer body in the polarizer to match the indoor temperature.

[0015] The beneficial effects of this application are as follows: Unlike the prior art, the method and device for adjusting the warpage of polarizers provided in this application provide a polarizer body and a protective film, and make the temperature difference between the polarizer body and the protective film a target temperature difference value, which is greater than zero or less than zero. Then, the polarizer body and the protective film with the temperature difference of the target temperature difference value are bonded together to form a polarizer, and the temperature difference between the polarizer body and the protective film in the polarizer becomes zero, so that the polarizer undergoes a warpage deformation corresponding to the target temperature difference value. Thus, by adjusting the temperature difference between the polarizer body and the protective film before bonding the polarizer body and the protective film, the degree of warpage of the polarizer can be adjusted, thereby ensuring that the finished polarizer meets the shipment quality requirements. [Attached Image Description]

[0016] 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.

[0017] Figure 1 This is a schematic flowchart of the method for adjusting polarizer warpage provided in the embodiments of this application;

[0018] Figure 2 This is a schematic diagram illustrating the principle of causing the polarizer to warp and deform in accordance with the target temperature difference, as provided in the embodiments of this application.

[0019] Figure 3 This is another schematic diagram illustrating the principle of causing the polarizer to warp and deform in accordance with the target temperature difference, as provided in the embodiments of this application.

[0020] Figure 4 This is a schematic diagram of a scenario where a polarizer body and a protective film are bonded using an adjustment device for polarizer warping, as provided in an embodiment of this application.

[0021] Figure 5 This is a schematic diagram of a scenario for measuring the warpage deformation of a polarizer, provided in an embodiment of this application.

[0022] Figure 6 This is a schematic diagram of the structure of the polarizer warping adjustment device provided in the embodiments of this application.

Detailed Implementation Methods

[0023] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0024] Please see Figure 1 , Figure 1 This is a schematic flowchart of the method for adjusting polarizer warpage provided in an embodiment of this application. Figure 1 As shown, the method for adjusting the warpage of the polarizer may include the following steps:

[0025] S 11. Provides polarizer body and protective film.

[0026] Specifically, in this embodiment, each step or sub-step of the polarizer warpage adjustment method can be executed by the corresponding polarizer warpage adjustment device to bond the polarizer body and the protective film together, and to ensure that the warpage deformation of the polarizer formed after the polarizer body and the protective film are bonded together can meet the expectations.

[0027] The polarizer body is used to generate polarized light, and its material may include polyvinyl alcohol (PVA). The protective film is used to protect the polarizer body, and its material may include materials with high light transmittance, good water resistance, and certain mechanical strength, such as triacetyl cellulose (TAC) or polyethylene terephthalate (PET).

[0028] S12. Make the temperature difference between the polarizer body and the protective film equal to the target temperature difference, which is greater than zero or less than zero.

[0029] The target temperature difference is greater than zero, meaning the temperature of the polarizer body is greater than the temperature of the protective film. Conversely, the target temperature difference is less than zero, meaning the temperature of the polarizer body is less than the temperature of the protective film. In practice, the target temperature difference can be determined by the expected degree and direction of warpage of the polarizer. Specifically, the larger the absolute value of the target temperature difference, the greater the expected degree of warpage of the polarizer can be. A target temperature difference greater than zero corresponds to a expected warpage direction from the protective film towards the polarizer body. A target temperature difference less than zero corresponds to a expected warpage direction from the polarizer body towards the protective film.

[0030] In one specific embodiment, to ensure that the temperature difference between the polarizer body and the protective film reaches the target temperature difference, the temperature of the polarizer body can be adjusted while keeping the temperature of the protective film constant or substantially constant, so that the temperature difference between the polarizer body and the protective film reaches the target temperature difference. In another specific embodiment, to ensure that the temperature difference between the polarizer body and the protective film reaches the target temperature difference, the temperature of the protective film can also be adjusted while keeping the temperature of the polarizer body constant or substantially constant, so that the temperature difference between the polarizer body and the protective film reaches the target temperature difference.

[0031] S13. The polarizer body with a temperature difference equal to the target temperature difference and the protective film are bonded together to form a polarizer.

[0032] S14. Make the temperature difference between the polarizer body and the protective film in the polarizer zero, so that the polarizer will undergo warping deformation corresponding to the target temperature difference.

[0033] Specifically, such as Figure 2 and Figure 3 As shown, after the polarizer body 11 and the protective film 12 with a temperature difference of the target temperature difference are bonded together to form a polarizer 10, and before the temperature difference between the polarizer body 11 and the protective film 12 in the polarizer 10 becomes zero, that is, during the process of the temperature difference between the polarizer body 11 and the protective film 12 in the polarizer 10 becoming zero, the temperature of the protective film 12 in the polarizer 10 can be kept basically unchanged.

[0034] And, as Figure 2 As shown, if the target temperature difference is less than zero, during the process of the temperature difference between the polarizer body 11 and the protective film 12 in the polarizer 10 becoming zero, the temperature of the polarizer body 11 in the polarizer 10 will gradually increase from a first temperature lower than the temperature of the protective film 12 in the polarizer 10 to a second temperature the same as the temperature of the protective film 12 in the polarizer 10. At the same time, the polarizer body 11 in the polarizer 10 will expand due to the temperature increase, and internal stress will be formed between the polarizer body 11 and the protective film 12 in the polarizer 10. This will allow the protective film 12 in the polarizer 10 to pull the polarizer body 11 toward the protective film 12, thereby allowing the polarizer 10 to warp in the direction from the polarizer body 11 toward the protective film 12.

[0035] Furthermore, such as Figure 3 As shown, if the target temperature difference is greater than zero, during the process of the temperature difference between the polarizer body 11 and the protective film 12 in the polarizer 10 becoming zero, the temperature of the polarizer body 11 in the polarizer 10 will gradually decrease from a third temperature greater than the temperature of the protective film 12 in the polarizer 10 to a fourth temperature the same as the temperature of the protective film 12 in the polarizer 10. At the same time, the polarizer body 11 in the polarizer 10 will shrink due to the temperature decrease, and internal stress will be formed between the polarizer body 11 and the protective film 12 in the polarizer 10. This will allow the polarizer body 11 in the polarizer 10 to pull the protective film 12 toward the polarizer body 11, thereby allowing the polarizer 10 to warp in the direction from the protective film 12 toward the polarizer body 11.

[0036] In some embodiments, such as Figure 4 As shown, while keeping the temperature of the protective film 12 constant or substantially constant, the temperature of the polarizer body 11 can be adjusted so that the temperature difference between the polarizer body 11 and the protective film 12 is the target temperature difference. Furthermore, S12 can specifically include:

[0037] S121. Allow the polarizer body 11 to enter the temperature-controlled oven 20.

[0038] Specifically, the temperature of the temperature-controlled oven 20 is adjustable and can be controlled between -30°C and 80°C. In some embodiments, the humidity of the temperature-controlled oven 20 is also adjustable, for example, it can be controlled between 0% and 99%. In other embodiments, the effective length of the temperature-controlled oven 20 can be 0.1 to 30 m. In still other embodiments, such as... Figure 4 As shown, the temperature-regulating oven 20 may include a plurality of heat transfer pipes 21, which can be used to regulate the temperature inside the temperature-regulating oven 20.

[0039] S122. The temperature of the polarizer body 11 is adjusted by the temperature regulating oven 20 so that the temperature difference between the polarizer body 11 and the protective film 12 is the target temperature difference.

[0040] Specifically, the temperature of the temperature-regulating oven 20 can be set according to the target temperature difference and the temperature of the protective film 12. For example, the temperature of the temperature-regulating oven 20 can be set to the sum of the target temperature difference and the temperature of the protective film 12. Furthermore, during the process of making the temperature difference between the polarizer body 11 and the protective film 12 equal to the target temperature difference, the temperature of the protective film 12 can remain constant, and its value range can be 23±5℃. It should be noted that the temperature of the polarizer body 11 entering the temperature-regulating oven 20 can become the same as the temperature inside the temperature-regulating oven 20 (that is, the set temperature of the temperature-regulating oven 20), so as to achieve the heating (or heating expansion) or cooling (or cooling contraction) of the polarizer body 11, and ensure that the temperature difference between the polarizer body 11 and the protective film 12 after passing through the temperature-regulating oven 20 can be equal to the target temperature difference.

[0041] In one specific embodiment, such as Figure 4 As shown, the polarizer body 11 can be conveyed to the temperature-controlled oven 20 via the conveying subunit 30. The conveying subunit 30 may include one or more rollers and a motor for driving the rollers to rotate.

[0042] Specifically, the aforementioned transmission subunit 30 may be located inside the aforementioned temperature-controlled oven 20, and the transmission path of the aforementioned polarizer body 11 inside the temperature-controlled oven 20 should be long enough to ensure that the aforementioned polarizer body 11, after being transmitted into the temperature-controlled oven 20 and before being transmitted out of the temperature-controlled oven 20, can have the same temperature as the internal environment of the temperature-controlled oven 20.

[0043] In this embodiment, as Figure 5As shown, in order to measure the warping deformation of the polarizer 10, the polarizer 10 can be placed on the working surface of the stage 100, and the distance H between the edge of the polarizer 10 and the working surface of the stage 100 can be measured to obtain the warping deformation (or degree of warping) of the polarizer 10. The stage 100 is plate-shaped and can be a marble stage. Marble stages have good flatness and are not easily deformed, which helps to increase the accuracy of polarizer warping detection.

[0044] In practice, an oven temperature lookup table can be established in advance through multiple experiments (as shown in Table 1 below). This oven temperature lookup table can record a one-to-one correspondence between multiple preset warp degrees and multiple oven temperatures.

[0045] Table 1

[0046] Group number Oven temperature / ℃ Warpage degree / mm 1 -30 30 2 -25 28 3 -20 26 4 -15 25 5 -10 23 6 -5 24 7 0 20 8 5 18 9 10 15 10 15 13 11 20 10 12 25 8 13 30 0 14 35 -5 15 40 -15 16 45 -25 17 50 -30

[0047] Furthermore, after determining the required degree of warpage of the polarizer 10, the oven temperature corresponding to the required degree of warpage can be obtained from the baking temperature lookup table, and the oven temperature can be used as the set temperature of the temperature regulating oven 20, thereby ensuring that the warpage deformation of the polarizer 10 formed after the polarizer body 11 and the protective film 12 are bonded can reach the expected level.

[0048] In some specific embodiments, in order to keep the temperature of the protective film 12 constant or substantially constant while making the temperature difference between the polarizer body 11 and the protective film 12 the target temperature difference, the method for adjusting the warpage of the polarizer before S13 may further include:

[0049] S15. Allow the protective film 12 to enter the bonding chamber.

[0050] Specifically, the temperature of the bonding chamber can be adjustable, for example, controlled between -18 and 30°C. In practice, the temperature of the bonding chamber can be set according to the desired temperature of the protective film 12; for example, the temperature of the bonding chamber can be set to the desired temperature of the protective film 12. Furthermore, during the process of making the temperature difference between the polarizer body 11 and the protective film 12 equal to the target temperature difference, the temperature of the bonding chamber can remain constant to ensure that the temperature of the protective film 12 remains constant.

[0051] Furthermore, it should be noted that the temperature of the protective film 12 entering the bonding chamber can be changed to be the same as the temperature inside the bonding chamber (i.e., the set temperature of the bonding chamber) to achieve temperature control of the protective film 12. In a specific example, the bonding chamber can be a cleanroom.

[0052] In one specific embodiment, such as Figure 4As shown, the protective film 12 can be conveyed to the bonding chamber via the first conveying unit 40. The first conveying unit 40 may include one or more rollers and a motor for driving the rollers to rotate.

[0053] Specifically, the first conveying unit 40 may be located inside the bonding chamber, and the conveying path of the protective film 12 inside the bonding chamber should be long enough to ensure that the protective film 12 has the same temperature as the internal environment of the bonding chamber before it is bonded to the polarizer body 11.

[0054] In some embodiments, prior to S13, the method for adjusting the warpage of the polarizer may further include:

[0055] S16. The polarizer body 11, whose temperature difference with the protective film 12 is the target temperature difference, is moved from the temperature-controlled oven 20 to the bonding chamber.

[0056] Accordingly, S13 may specifically include: bonding the polarizer body 11 with a temperature difference equal to the target temperature difference and the protective film 12 in the bonding chamber to form the polarizer 10.

[0057] Specifically, such as Figure 4 As shown, the polarizer body 11 and the protective film 12, with a temperature difference equal to the target temperature difference, can be bonded together in the bonding chamber using the bonding device 50 to form the polarizer 10. The bonding device 50 may include two tangential rollers.

[0058] Furthermore, in the embodiment where the polarizer body 11 and the protective film 12 with a temperature difference equal to the target temperature difference are bonded together in the bonding chamber to form the polarizer 10, the above-mentioned S14 may specifically include: changing the temperature of the polarizer body 11 in the polarizer 10 to the temperature in the bonding chamber.

[0059] Specifically, the transmission path of the polarizer 10 inside the bonding chamber should be long enough to ensure that the polarizer 10 has the same temperature as the internal environment of the bonding chamber before it is transmitted out of the bonding chamber.

[0060] As can be seen from the above, the method for adjusting the warpage of the polarizer in this embodiment involves providing a polarizer body and a protective film, and setting the temperature difference between the polarizer body and the protective film to a target temperature difference value, which is either greater than zero or less than zero. Then, the polarizer body and the protective film, with the temperature difference equal to the target temperature difference, are bonded together to form a polarizer. The temperature difference between the polarizer body and the protective film in the polarizer is then reduced to zero, causing the polarizer to warp according to the target temperature difference. This allows for the adjustment of the degree of polarizer warpage by adjusting the temperature difference between the polarizer body and the protective film before bonding, thereby ensuring that the finished polarizer meets the required quality for shipment.

[0061] Based on the methods described in the above embodiments, this embodiment will further describe the method from the perspective of the apparatus. Please refer to [link / reference]. Figures 2 to 6 The polarizer warpage adjustment device 300 provided in this application embodiment is used to bond the polarizer body 11 and the protective film 12. Furthermore, the polarizer warpage adjustment device 300 may include:

[0062] (1) First temperature regulation unit 301

[0063] The first temperature adjustment unit 301 is used to make the temperature difference between the polarizer body 11 and the protective film 12 a target temperature difference, which is greater than zero or less than zero.

[0064] Specifically, the first temperature adjustment unit 301 can be used for:

[0065] Adjust the temperature of the polarizer body 11 so that the temperature difference between the polarizer body 11 and the protective film 12 is the target temperature difference.

[0066] In one specific embodiment, the first temperature regulating unit 301 described above may include:

[0067] Temperature-controlled drying oven 20;

[0068] The transmission subunit 30 is used to bring the polarizer body 11 into the temperature-controlled oven 20;

[0069] The temperature regulation subunit is used to regulate the temperature of the polarizer body 11 through the temperature regulation oven 20.

[0070] (2) Adhesion unit 302

[0071] The bonding unit 302 is used to bond the polarizer body 11, whose temperature difference is the target temperature difference, and the protective film 12 to form the polarizer 10.

[0072] (3) Second temperature control unit 303

[0073] The second temperature adjustment unit 303 is used to make the temperature difference between the polarizer body 11 and the protective film 12 in the polarizer 10 become zero, so that the polarizer 10 will undergo warping deformation corresponding to the target temperature difference.

[0074] In some specific embodiments, the above-mentioned polarizer warpage adjustment device may further include:

[0075] (4) First transmission unit 40

[0076] The first conveying unit 40 is used to bring the protective film 12 into the bonding chamber.

[0077] (5) Second transmission unit

[0078] The second conveying unit is used to move the polarizer body 11, whose temperature difference with the protective film 12 is the target temperature difference, out of the temperature-controlled oven 20 and into the bonding chamber.

[0079] Accordingly, the bonding unit 302 described above can be specifically used for:

[0080] In the bonding chamber, the polarizer body 11 with a temperature difference equal to the target temperature difference and the protective film 12 are bonded together to form the polarizer 10.

[0081] Furthermore, the aforementioned second temperature regulation unit 303 can be specifically used for:

[0082] The temperature of the polarizer body 11 in the polarizer 10 is made to match the temperature of the room.

[0083] It should be noted that, in specific implementation, the above units and sub-units can be implemented as independent entities, or they can be arbitrarily combined and implemented as the same or several entities. For the specific implementation of the above units and sub-units, please refer to the previous method embodiments, which will not be repeated here.

[0084] As can be seen from the above, the polarizer warpage adjustment device in this embodiment is used to bond the polarizer body and the protective film, including: a first temperature adjustment unit, used to make the temperature difference between the polarizer body and the protective film equal to a target temperature difference, the target temperature difference being greater than zero or less than zero; a bonding unit, used to bond the polarizer body and the protective film with the temperature difference equal to the target temperature difference to form a polarizer; and a second temperature adjustment unit, used to make the temperature difference between the polarizer body and the protective film in the polarizer become zero, so that the polarizer undergoes warpage deformation corresponding to the target temperature difference. Thus, by adjusting the temperature difference between the polarizer body and the protective film before bonding, the degree of polarizer warpage can be adjusted, thereby ensuring that the finished polarizer meets the shipment quality requirements.

[0085] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0086] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for adjusting the warpage of a polarizer, characterized in that, include: Provides polarizer body and protective film; The temperature of the polarizer body is adjusted so that the temperature difference between the polarizer body and the protective film is a target temperature difference, which is greater than zero or less than zero. The polarizer body and the protective film are bonded together to form a polarizer, with the temperature difference being the target temperature difference. The temperature difference between the polarizer body and the protective film in the polarizer is reduced to zero, so that the polarizer undergoes a warping deformation corresponding to the target temperature difference. The method for adjusting polarizer warpage does not include the step of increasing the tension applied to the protective film after adjusting the temperature of the polarizer body to make the temperature difference between the polarizer body and the protective film a target temperature difference value.

2. The method for adjusting polarizer warpage according to claim 1, characterized in that, The adjustment of the temperature of the polarizer body specifically includes: The polarizer body is then placed in a temperature-controlled oven. The temperature of the polarizer body is adjusted using the temperature-regulating oven.

3. The method for adjusting polarizer warpage according to claim 2, characterized in that, Before bonding the polarizer body, whose temperature difference is equal to the target temperature difference, and the protective film to form a polarizer, the method for adjusting the warpage of the polarizer further includes: The protective film is then introduced into the bonding chamber; The polarizer body, whose temperature difference with the protective film is the target temperature difference, is moved from the temperature-controlled oven to the bonding chamber. The step of bonding the polarizer body, whose temperature difference is equal to the target temperature difference, and the protective film to form a polarizer specifically includes: In the bonding chamber, the polarizer body and the protective film, with a temperature difference equal to the target temperature difference, are bonded together to form a polarizer.

4. The method for adjusting polarizer warpage according to claim 3, characterized in that, The step of making the temperature difference between the polarizer body and the protective film in the polarizer zero specifically includes: The temperature of the polarizer body in the polarizer is changed to the temperature of the bonding chamber.

5. A device for adjusting the warpage of a polarizer, characterized in that, The method for adjusting according to any one of claims 1 to 4, comprising bonding the polarizer body to the protective film, including: The first temperature adjustment unit is used to make the temperature difference between the polarizer body and the protective film a target temperature difference, wherein the target temperature difference is greater than zero or less than zero; A bonding unit is used to bond the polarizer body and the protective film together, with the temperature difference being the target temperature difference, to form a polarizer. The second temperature adjustment unit is used to make the temperature difference between the polarizer body and the protective film in the polarizer become zero, so that the polarizer will undergo warping deformation corresponding to the target temperature difference.

6. The polarizer warpage adjustment device according to claim 5, characterized in that, The first temperature regulation unit is specifically used for: The temperature of the polarizer body is adjusted so that the temperature difference between the polarizer body and the protective film is the target temperature difference.

7. The polarizer warpage adjustment device according to claim 6, characterized in that, The first temperature regulating unit includes: Temperature-controlled drying oven; A transfer subunit is used to allow the polarizer body to enter the temperature-controlled oven. The temperature control subunit is used to adjust the temperature of the polarizer body through the temperature control oven.

8. The polarizer warpage adjustment device according to claim 7, characterized in that, The polarizer warpage adjustment device also includes: The first conveying unit is used to bring the protective film into the bonding chamber; The second conveying unit is used to move the polarizer body, whose temperature difference with the protective film is the target temperature difference, from the temperature-regulating oven to the bonding chamber. The bonding unit is specifically used for: In the bonding chamber, the polarizer body and the protective film, with a temperature difference equal to the target temperature difference, are bonded together to form a polarizer.

9. The polarizer warpage adjustment device according to claim 8, characterized in that, The second temperature regulation unit is specifically used for: The temperature of the polarizer body in the polarizer is changed to the temperature of the bonding chamber.

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