Composite polaroid, display module and display device

Abstract

The utility model provides a composite polaroid, a display module and a display device, the composite polaroid comprises an anti-reflection film layer, a support layer, a polarization layer and a protection layer which are laminated, and orthographic projections of the anti-reflection film layer, the support layer, the polarization layer and the protection layer in the thickness direction of the anti-reflection film layer coincide. According to the technical scheme, the reject ratio caused by bubbles generated after the plastic cover plate is attached can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of display devices, in particular to a composite polarizer, a display module and a display device. Background Art

[0002] In the related art, after a polarizer, an SRF film and a plastic cover plate are bonded and assembled, air bubbles are likely to be generated at the edge parts of the polarizer and the SRF film, resulting in a significant increase in the defect rate of the product. Summary of the Utility Model

[0003] In view of this, an object of the utility model is to provide a composite polarizer, a display module and a display device, which are used to reduce the probability of air bubbles appearing when bonding a plastic cover plate, so as to at least partially solve the problems in the related art.

[0004] Based on the above object, the first aspect of the utility model provides a composite polarizer, comprising: an anti-reflection film layer and a polarizer which are sequentially stacked, and the orthographic projections of the anti-reflection film layer and the polarizer along the thickness direction of the anti-reflection film layer coincide.

[0005] Optionally, the polarizer comprises a support layer, a polarization layer and a protection layer which are sequentially stacked;

[0006] The anti-reflection film layer is connected to the support layer through an adhesive layer, and adjacent two layers among the support layer, the polarization layer and the protection layer are connected through the adhesive layer.

[0007] Optionally, an included angle is formed between the cutting direction of the anti-reflection film layer and the extending direction of the absorption axis of the polarization layer.

[0008] Optionally, the included angle between the cutting direction of the anti-reflection film layer and the extending direction of the absorption axis of the polarization layer is 40° to 50°.

[0009] Optionally, the material of the adhesive layer is a pressure-sensitive adhesive or a UV adhesive.

[0010] Optionally, the retardation of the anti-reflection film layer is greater than 8000 nanometers, and the thickness of the anti-reflection film layer is 70 to 90 micrometers.

[0011] The second aspect of the utility model further provides a display module, comprising the composite polarizer as described in the first aspect.

[0012] Optionally, a display unit and an assembly film wrapped outside the display unit;

[0013] The display unit includes a display panel and a rubber frame connected to the display panel. The rubber frame is located on at least one side of the circumferential direction of the display panel. The composite polarizer is connected to the display side of the display panel. An installation area adjacent to the composite polarizer is also provided on the display side. The assembly film extends from the rubber frame to the installation area and is connected to the display panel.

[0014] The display module further includes an adhesion layer and a cover plate. The adhesion layer covers the composite polarizer and the assembly film located in the installation area. The cover plate is connected to the side of the adhesion layer away from the composite polarizer.

[0015] Optionally, the material of the assembly film is polyester film.

[0016] Optionally, it includes: a display unit;

[0017] The display unit includes a display panel and a rubber frame connected to the display panel. The composite polarizer is connected to the display side of the display panel. The rubber frame is connected to the cover plate through an adhesive layer, and the composite polarizer is connected to the cover plate through an adhesion layer.

[0018] Optionally, the cover plate is a plastic cover plate.

[0019] The third aspect of the present disclosure further provides a display device, including the display module as described in the second aspect.

[0020] Through the above technical solutions, the anti-reflection film layer and the polarizer are stacked. The anti-reflection film layer can eliminate the rainbow pattern phenomenon when a person wears polarized glasses to view the screen. The positive projection of the anti-reflection film layer and the polarizer in the thickness direction of the anti-reflection film layer coincides, that is, the side wall surface of the polarizer and the side wall surface of the anti-reflection film layer are coplanar, and there is no gap at the edge parts of the two, thereby reducing the defect rate caused by bubbles generated after attaching the plastic cover plate.

[0021] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation part. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 It is a schematic structural diagram of the rainbow pattern phenomenon occurring on the plastic cover plate provided in the exemplary embodiment of the present disclosure;

[0024] Figure 2 It is a schematic structural diagram of the mold gate in the exemplary embodiment of the present disclosure;

[0025] Figure 3 It is a schematic structural diagram of the front mold of the mold in the exemplary embodiment of the present disclosure;

[0026] Figure 4 It is a schematic structural diagram of the rear mold of the mold in the exemplary embodiment of the present disclosure;

[0027] Figure 5 It is a schematic diagram of the improvement effect after adjusting the injection molding process for product molding in the exemplary embodiment of the present disclosure;

[0028] Figure 6 It is a schematic diagram of the improvement effect after two-color injection molding in the exemplary embodiment of the present disclosure;

[0029] Figure 7 It is a schematic diagram of the application of the SRF film in the exemplary embodiment of the present disclosure;

[0030] Figure 8 It is a schematic structural diagram when there is a gap between the anti-reflection film layer and the polarizer in the exemplary embodiment of the present disclosure;

[0031] Figure 9 It is a schematic structural diagram of the polarizer in the exemplary embodiment of the present disclosure;

[0032] Figure 10 It is a schematic structural diagram of the display module in the exemplary embodiment of the present disclosure, wherein the display module is assembled by an assembling method of first grouping and then pasting;

[0033] Figure 11 It is a schematic structural diagram of the display module in the exemplary embodiment of the present disclosure, wherein the display module is assembled by an assembling method of first pasting and then grouping;

[0034] Figure 12 It is a schematic structural diagram of the cutting angle of the anti-reflection film layer in the exemplary embodiment of the present disclosure.

[0035] Explanation of reference numerals

[0036] 1 - Anti - reflection film layer; 2 - Support layer; 3 - Polarization layer; 4 - Protective layer; 5 - Adhesive layer; 6 - Display unit; 601 - CF layer; 602 - TFT layer; 603 - Front polarizer; 604 - Rear polarizer; 605 - Light guide plate; 606 - Reflector; 607 - Thin film material; 608 - Bonding layer; 609 - Placement area; 610 - Adhesive frame; 611 - Backplane; 7 - Plastic cover plate; 8 - Assembly film; 9 - Step - shaped gap; 10 - Bonding layer; 11 - Mold glue inlet; 12 - Front mold; 13 - Rear mold. Detailed implementation manners

[0037] To make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the following further describes the present utility model in detail with reference to specific embodiments and the attached drawings.

[0038] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present utility model should have the ordinary meanings understood by those with ordinary skills in the field to which the present disclosure belongs. The "first", "second", and similar terms used in the present disclosure do not indicate any order, quantity, or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", and "right" are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0039] In the related art, conventional LCD display modules generally use glass cover plates. However, compared with glass cover plates, the plastic cover plate 7 has more advantages in terms of curved surface modeling and complex structural installation, and has a mature process and lower cost. Therefore, more and more customers choose to use the plastic cover plate 7. However, when the LCD display unit 6 uses the plastic cover plate 7, as shown in Figure 1 When a person wears polarized sunglasses to view the screen of the LCD display unit 6, there will be a rainbow pattern phenomenon. The plastic cover plate 7 is generally made of PC material. After injection molding, the finished product has uneven molecular chain structure and internal stress. When polarized light passes through the transparent sample (plastic cover plate 7), the internal stress itself causes the light to undergo a birefringence effect. When observed through a polarizer, colorful rainbow stripes appear. On the terminal device, when a user wears polarized sunglasses and visually observes the screen, the obvious color bands will affect the visual sense. To address the problem of rainbow patterns, it can be improved by optimizing the cover plate mold design, adjusting the product molding injection process, and using two - color injection molding, that is, optimizing the cover plate mold design, as shown in Figure 2 、Figure 3 and Figure 4 As shown in Figure 4 , the mold gate 11 is designed as a large sprue gate, the runner is designed as a flat and large runner, and the front mold 12 and the rear mold 13 adopt a single-group waterway design and other optimized designs, which increase the fluidity of PC particles during the molding process, make the product shrink evenly during molding, and reduce the generation of internal stress.

[0040] Adjust the injection molding process for product molding. Refer to Figure 5 As shown in Figure 5 , in terms of adjusting the injection molding process, mainly reduce the injection pressure, increase the injection mold temperature. The process of low pressure and high temperature increases the fluidity of PC material and reduces the shrinkage of internal stress; by optimizing the mold design and adjusting the optimal molding process, the internal stress of the plastic cover plate 7 product can be appropriately reduced. However, due to the amorphous characteristics of PC particles themselves, the molecular arrangement is inevitably uneven after molding, and the improvement effect on the rainbow pattern is limited. Figure 5 It is the effect diagram after adjusting the injection molding process for product molding.

[0041] Two-color injection molding, that is, adding smoked color masterbatch particles during the molding process. These particles have the characteristic of neutralizing the high refractive index of PC particles, which reduces the visual rainbow pattern effect of the finished product from the raw material; through verification, the higher the proportion of the added color masterbatch, the lower the refractive index of the product, and the lighter the visual rainbow pattern. The improvement effect can be referred to Figure 6 As shown in Figure 6 . Two-color injection molding can improve the rainbow pattern, but adding color masterbatch particles will also reduce the transmittance of the product (60 - 70%). For the in-vehicle display project, it cannot meet the requirements of high transmittance and high brightness. Therefore, this method also has limitations.

[0042] In the related art, when the LCD display unit 6 uses the plastic cover plate 7, refer to Figure 7 As shown in Figure 7 , when a person wears polarized sunglasses to view the screen of the LCD display unit 6, there will be a rainbow pattern phenomenon. Therefore, in order to improve the viewing experience of the person, an SRF film can be laminated on the polarizer attached to the liquid crystal glass to eliminate the rainbow pattern. However, when the staff laminates the plastic cover plate 7 through an optical adhesive, it is found that there are bubbles at the edge part between the SRF film and the polarizer, which leads to the product being a defective product. The reason for the bubbles is that when the SRF film is laminated on the polarizer, there is a gap at the edge part between the two, that is, refer to Figure 8 As shown in Figure 8 , there is a stepped gap 9 at the edge part between the SRF film and the polarizer, and the optical adhesive cannot fully fill the stepped gap 9, which leads to the generation of bubbles.

[0043] Based on this, the first aspect of the present disclosure provides a composite polarizer. Refer to Figure 9 、 Figure 10 and Figure 11As shown, the composite polarizer includes an antireflection film layer 1 and a polarizer that are stacked in sequence. The antireflection film layer 1 can prevent rainbow patterns when a person wears polarized glasses to view the screen. The antireflection film layer 1 and the polarizer overlap in the orthographic projection along the thickness direction of the antireflection film layer 1, that is, the side wall surface of the polarizer and the side wall surface of the antireflection film layer 1 are coplanar, and there is no gap at the edge part between the two, thereby reducing the defect rate caused by bubbles generated after bonding with the plastic cover plate 7.

[0044] In some embodiments, referring to Figure 9 、 Figure 10 and Figure 11 As shown, the polarizer includes a support layer 2, a polarization layer 3, and a protective layer 4 that are stacked in sequence. The antireflection film layer 1 is connected to the side of the support layer 2 away from the polarization layer 3 through an adhesive layer 5. Adjacent layers among the support layer 2, the polarization layer 3, and the protective layer 4 are connected through an adhesive layer 5. Among them, the support layer 2 is a TAC layer (polyester film layer), the polarization layer 3 is a PVA layer (polyvinyl alcohol layer), and the protective layer 4 is an Acrylic film layer (acrylic film). The TAC layer has good transparency and heat resistance, and mainly plays a role of support and protection in the polarizer, providing a stable foundation for the PVA layer and the Acrylic film layer; through special treatments such as stretching and iodine treatment, the PVA layer can form a molecular structure with good polarization effect, which is the core part for the polarizer to achieve the polarization function; the Acrylic film layer is usually used as the protective layer 4 in the polarizer, and at the same time helps to improve the brightness and contrast of the screen.

[0045] Exemplarily, the thickness of the support layer 2 can be 40 to 50 microns, such as 40 microns, 42 microns, 45 microns, 47 microns, or 50 microns.

[0046] Exemplarily, the thickness of the polarization layer 3 can be 10 to 20 microns, such as 10 microns, 13 microns, 15 microns, 17 microns, or 20 microns.

[0047] Exemplarily, the thickness of the protective layer 4 can be 30 to 50 microns, such as 30 microns, 35 microns, 40 microns, 45 microns, or 50 microns.

[0048] Exemplarily, the thickness of the adhesive layer 5 can be 10 to 30 microns, such as 10 microns, 15 microns, 20 microns, 25 microns, or 30 microns.

[0049] Therefore, the polarizer composed of the TAC layer, PAV layer, and Acrylic film layer can not only effectively control the polarization state of light, but also improve the overall performance of the LCD panel, such as brightness, contrast, and durability, etc.; The anti-reflection film layer 1 is an SRF film (a high retardation film with a PET substrate). In the present disclosure, the anti-reflection film layer 1, the support layer 2, the polarization layer 3, and the protective layer 4 form a composite polarizer. Refer to Figure 9 As shown, the orthographic projections of the anti-reflection film layer 1, the support layer 2, the polarization layer 3, and the protective layer 4 in the thickness direction of the anti-reflection film layer 1 coincide, and the side wall surfaces of the polarizer formed by the support layer 2, the polarization layer 3, and the protective layer 4 are coplanar with the side wall surface of the anti-reflection film layer 1, so that when the plastic cover plate 7 is attached through an optical adhesive, the generation of bubbles caused by the stepped gap 9 between the anti-reflection film layer 1 and the polarizer can be avoided, thereby reducing the defect rate of the product.

[0050] In some embodiments, refer to Figure 9 As shown, the adjacent two layers among the anti-reflection film layer 1, the support layer 2, the polarization layer 3, and the protective layer 4 are connected by an adhesive layer 5. The material of the adhesive layer 5 is a pressure-sensitive adhesive or a UV adhesive. At the same time, an adhesive layer 5 is also provided on the side of the protective layer 4 facing away from the polarization layer 3 for attaching the polarizer with the anti-reflection film layer 1 attached to the liquid crystal glass CF layer 601. Moreover, the upper surface of the anti-reflection film layer 1 is connected to the plastic cover plate 7 through an optical adhesive (OCR / OCA optical adhesive).

[0051] Exemplarily, the thickness of the adhesive layer 5 on the side of the protective layer 4 facing away from the polarization layer 3 can be the same as or different from the thickness of the adhesive layer 5 between the polarizer and the anti-reflection film layer 1.

[0052] Exemplarily, the thickness of the adhesive layer 5 on the side of the protective layer 4 facing away from the polarization layer 3 is greater than the thickness of the adhesive layer 5 between the polarizer and the anti-reflection film layer 1.

[0053] In some embodiments, refer to Figure 12 , the cutting direction of the anti-reflection film layer 1 and the extending direction of the absorption axis of the polarization layer 3 are arranged at an angle, and the angle is 40° to 50°, such as 40°, 43°, 45°, 47°, or 50°. The advantage of such a setting is that it can optimize the viewing angle characteristics, color performance, and overall display quality of the LCD.

[0054] In some embodiments, the retardation of the anti-reflection film layer 1 is greater than 8000 nanometers. For example, the retardation of the anti-reflection film layer 1 is 8100 nanometers, 8200 nanometers, 8400 nanometers, or 8500 nanometers. Among them, the high retardation can cause the color sequence delay of light interference, that is, this delay makes the color observed by the naked eye lighter. Therefore, using the anti-reflection film layer 1 with a higher retardation can effectively eliminate or reduce the rainbow pattern effect that occurs when the user wears polarized sunglasses to observe the screen, and improve the display quality of the screen under special viewing conditions (such as when wearing polarized sunglasses).

[0055] In some embodiments, in order to ensure that the retardation of the anti-reflection film layer 1 is greater than 8000 nanometers, the thickness of the anti-reflection film layer 1 can be selected from 70 to 90 micrometers. For example, the thickness of the anti-reflection film layer 1 can be 70 micrometers, 75 micrometers, 80 micrometers, 85 micrometers, or 90 micrometers. This ensures that the anti-reflection film layer 1 reaches the required retardation greater than 8000 nanometers.

[0056] Based on the above technical solutions, the second aspect of the present disclosure further provides a display module, including the composite polarizer in the first aspect above or any embodiment in the first aspect above. Among them, the display module includes a display panel, a polarizer, a backlight module, and a housing structure. The housing structure is composed of a rubber frame 610 and a backplane 611. A cavity for accommodating and protecting the display panel, the polarizer, and the backlight module is provided inside the housing structure composed of the rubber frame 610 and the backplane 611. The display panel is composed of two pieces of liquid crystal glass, with liquid crystal material sandwiched in the middle. The two pieces of liquid crystal glass are a CF layer 601 and a TFT layer 602 respectively. The CF layer 601 contains color filters for generating color images, and the TFT layer 602 contains thin film transistors for controlling the on and off of each pixel. The number of polarizers is two, namely a front polarizer 603 attached to the CF layer 601 (the composite polarizer is the front polarizer 603 in the present disclosure) and a rear polarizer 604 on the side close to the backlight module. The rear polarizer 604 is attached to the TFT layer 602. The rear polarizer 604 improves the contrast of the LCD by controlling the polarization direction of light, and at the same time, when used in cooperation with the front polarizer 603, it can help improve the viewing angle characteristics of the LCD. The backlight module is located below the liquid crystal panel and provides a light source for illuminating the liquid crystal panel. The backlight module includes a light guide plate 605, a reflector 606, and various thin film materials 607 for improving display performance and appearance.

[0057] Among them, the conventional thin film materials 607 include but are not limited to diffuser films: uniformly scatter the light from the backlight, reduce bright spots and light spots, and provide a more uniform lighting effect; prism films: utilize the total reflection principle to increase the light output efficiency, make the light irradiate the screen more concentratedly, and improve the brightness; reflective films: enhance the light reflection of the backlight, improve the light utilization efficiency, and reduce energy loss; anti-glare films: reduce the reflection on the screen surface, reduce glare, and improve the visibility of the screen. Usually, during the assembly process of the LCD module, multiple thin film materials 607 should be stacked in a specific order to achieve the required optical effects and performance. The selection and application of each thin film material 607 need to be determined according to the design and performance requirements of the display module.

[0058] In some embodiments, the composite polarizer can be applied to different module architectures, such as: TLCM: Cell Tape structure (assemble first and then attach) or TLCM: rear group backlight structure (attach first and then assemble).

[0059] TLCM (Tape Liquid Crystal Module): The Cell Tape structure is a manufacturing method of an LCD module in which the display panel (Cell) and the backlight module (BLU) are first assembled and then attached to the housing structure. Among them, as Figure 10 shown, the display module is assembled by the method of assembling first and then attaching. The display module includes: a display unit 6 and an assembly film 8 wrapped outside the display unit 6. The assembly film 8 is used to fix each component included in the display unit 6 and at the same time wrap and assemble the display unit 6 as a whole. The material of the assembly film 8 is polyester film.

[0060] In the present disclosure, the display unit 6 includes a display panel and a rubber frame 610 connected to the display panel. The rubber frame 610 is located on at least one side of the circumferential direction of the display panel. The rubber frame 610 and the display panel can be connected through a Foam layer. The Foam layer can absorb vibrations and impacts caused by the external environment or operations, and can serve as a buffer material to reduce damage caused by equipment movement or falling. The composite polarizer is connected to the display side of the display panel, that is, the composite polarizer is attached to the liquid crystal glass CF layer 601. In the Cell Tape structure, an installation area 609 adjacent to the composite polarizer is also provided on the display side. The width of the installation area 609 is 1.2 mm ± 0.3 mm, so that the assembly film 8 extends from the rubber frame 610 to the installation area 609 and is connected to the display panel. Among them, the width of the installation area is Figure 10The dimension in the L direction, and the display module further includes a bonding layer 10 and a cover plate. The cover plate is a plastic cover plate 7. The bonding layer 10 covers the composite polarizer and the assembly film 8 located in the placement area 609. The plastic cover plate 7 is connected to the side of the bonding layer 10 away from the composite polarizer. Among them, the bonding layer 10 is made of an optical bonding adhesive.

[0061] TLCM (Tape Liquid Crystal Module): The rear group backlight structure is an LCD module manufacturing method in which the liquid crystal panel is first attached to the housing structure and then the backlight module is assembled. Compared with the Cell Tape structure, the rear group backlight structure can still adjust the backlight component at the last stage of assembly, with higher flexibility. For the repair or replacement of the backlight part, it is relatively easy and does not require the use of the assembly film 8, so there is no need to set the placement area 609 on the display side of the display panel. Only an installation gap needs to be reserved between the side wall surface of the composite polarizer close to the rubber frame 610 and the side wall surface of the display panel. The installation gap is 0.3mm ± 0.3mm. Among them, the purpose of 0.3mm is to prevent the composite polarizer from exceeding the edge of the display panel, resulting in appearance problems or affecting subsequent assembly; ±0.3mm is the allowable error range of the composite polarizer relative to the ideal fitting position during the actual fitting process. In the present disclosure, with reference to Figure 11 As shown, the display module is assembled by an assembly method of attaching first and then assembling. The display module includes a display unit 6. The display unit 6 includes a display panel and a rubber frame 610 connected to the display panel. Among them, the composite polarizer is connected to the display side of the display panel. The rubber frame 610 is connected to the cover plate through an adhesive layer 608. The adhesive layer 608 is made of a hot melt adhesive. The composite polarizer is connected to the cover plate through an optical bonding adhesive.

[0062] Based on the above technical solutions, the third aspect of the present disclosure further provides a display device, including the display module of the second aspect. The display device can be, for example, a watch, a notebook computer, a mobile phone, a wireless device, a personal digital assistant (PDA), a handheld or portable computer, a GPS receiver / navigator, a camera, an MP4 video player, a video camera, a game console, a clock, a calculator, a television monitor, a flat panel display, a computer monitor, an automotive display (such as an odometer display, etc.), a navigator, a cockpit controller and / or display, a display of a camera view (such as a display of a rear view camera in a vehicle), an electronic photo, an electronic billboard or sign, and a projector, etc., and has all the beneficial effects of the above display module. The present disclosure will not elaborate here.

[0063] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples; under the concept of the present utility model, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present utility model as described above, and for the sake of brevity, they are not provided in detail.

[0064] Embodiments of the present utility model are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A composite polarizer, characterized in that, Comprising: An anti-reflection film layer and a polarizer which are stacked in sequence, and the orthographic projection of the anti-reflection film layer and the polarizer in the thickness direction of the anti-reflection film layer coincides; The polarizer includes a support layer, a polarization layer, and a protective layer which are stacked in sequence; The anti-reflection film layer is connected to the side of the support layer away from the polarization layer through an adhesive layer, and adjacent two layers among the support layer, the polarization layer, and the protective layer are connected through the adhesive layer; The cutting direction of the anti-reflection film layer is arranged at an angle with the extending direction of the absorption axis of the polarization layer.

2. The composite polarizer according to claim 1, characterized in that, The angle between the cutting direction of the anti-reflection film layer and the extending direction of the absorption axis of the polarization layer is 40° to 50°.

3. The composite polarizing plate according to claim 1, wherein, The material of the adhesive layer is pressure-sensitive adhesive or UV adhesive.

4. The composite polarizer according to claim 1, wherein The retardation of the anti-reflection film layer is greater than 8000 nanometers, and the thickness of the anti-reflection film layer is 70 to 90 micrometers.

5. A display module, characterized in that, Comprising the composite polarizer according to any one of claims 1-4.

6. The display module according to claim 5, wherein Comprising: A display unit and an assembly film wrapped outside the display unit; The display unit includes a display panel and a glue frame connected to the display panel, and the glue frame is located on at least one side of the circumferential direction of the display panel; the composite polarizer is connected to the display side of the display panel, and an installation area adjacent to the composite polarizer is also provided on the display side, and the assembly film extends from the glue frame to the installation area and is connected to the display panel; The display module further includes a bonding layer and a cover plate, the bonding layer covers the composite polarizer and the assembly film located in the installation area, and the cover plate is connected to the side of the bonding layer away from the composite polarizer.

7. The display module according to claim 6, wherein The material of the assembly film is polyester film.

8. The display module according to claim 5, wherein Comprising: A display unit; The display unit includes a display panel and a glue frame connected to the display panel, the composite polarizer is connected to the display side of the display panel, the glue frame is connected to the cover plate through an adhesive layer, and the composite polarizer is connected to the cover plate through a bonding layer.

9. The display module according to claim 6 or 8, characterized in that, The cover plate is a plastic cover plate.

10. A display device, characterized in that, Comprising the display module according to any one of claims 5-9.

Images