Polarizing film, display module and electronic equipment

Abstract

This invention relates to the field of display technology, specifically disclosing a polarizer, a display module, and an electronic device. The polarizer includes a polarizer body and an isolation layer located inside or at least on one side of the polarizer body. The isolation layer is used to isolate moisture. The isolation layer includes a moisture channel communicating with the outside world, which allows the isolated moisture to be discharged to the outside while preventing external moisture from entering the polarizer. Thus, when this polarizer is applied to a display module, the isolation layer can isolate internal moisture below the polarizer, and the moisture channel can promptly discharge it to the outside. Simultaneously, the moisture channel can prevent external moisture from entering the display module, thereby preventing moisture from reaching the cover plate and optical adhesive layer of the display module and forming bubbles. This avoids bubbles affecting the display effect, thereby improving the display effect of the display module.

Description

Technical Field

[0001] This invention relates to the field of display-related technologies, specifically to a polarizer, a display module, and an electronic device. Background Technology

[0002] In existing technologies, due to manufacturing limitations, display devices are prone to internal moisture buildup during daily use. This includes moisture generated within the display device itself and moisture from the outside environment. This internal moisture can easily form OCA bubbles between the display cover and the optical adhesive (OCA), severely impacting the display's performance. Therefore, it is urgent to address the problem of OCA bubble formation and its negative effect on display quality. Summary of the Invention

[0003] In view of this, the present invention aims to provide a polarizer to solve the problem that display devices in the prior art are prone to OCA bubbles, resulting in poor display effects.

[0004] In a first aspect, the present invention provides a polarizer, comprising a polarizer body and an isolation layer located inside or at least on one side of the polarizer body;

[0005] The isolation layer is used to isolate moisture;

[0006] The isolation layer includes a water vapor channel that communicates with the outside world. The water vapor channel is used to discharge the isolated water vapor to the outside world and to prevent water vapor from the outside world from entering the polarizer.

[0007] Optionally, the polarizer body includes a polarizing cover layer and a plurality of functional film layers stacked sequentially. The polarizing cover layer includes a first side and a second side opposite to each other, and the plurality of functional film layers are all located on the first side of the polarizing cover layer.

[0008] The isolation layer is located between adjacent functional film layers, and / or, the isolation layer is located between the polarizing cover layer and the functional film layer, and / or, the isolation layer is located on the second side of the polarizing cover layer.

[0009] Optionally, when the isolation layer is located between adjacent functional film layers, and / or when the isolation layer is located between the polarizing cover layer and the functional film layer, the water vapor channel is located on the side of the isolation layer away from the polarizing cover layer;

[0010] When the isolation layer is located on the second side of the polarizing cover layer, the water vapor channel is located on the side of the isolation layer closer to the polarizing cover layer.

[0011] Optionally, the water vapor channel includes a channel body and an isolation component;

[0012] The isolation components are disposed at both ends of the channel body near the outside.

[0013] The isolation component is used to discharge liquids and / or gases within the channel body to the outside and to prevent external liquids and / or gases from entering the channel body.

[0014] Optionally, the isolation component includes a one-way water-permeable membrane and / or a one-way air-permeable membrane;

[0015] The one-way permeable membrane is used to drain the liquid inside the channel body to the outside and prevent external liquid from entering the channel body;

[0016] The one-way breathable membrane is used to discharge the gas inside the channel body to the outside and prevent outside gas from entering the channel body.

[0017] Optionally, the water vapor channel has a first cross-section and a second cross-section in a direction perpendicular to the length of the water vapor channel, wherein the area of ​​the first cross-section of the water vapor channel is larger than the area of ​​the second cross-section;

[0018] The first cross-sectional area is the cross-sectional area of ​​the central region of the water vapor channel, and the second cross-sectional area is the cross-sectional area of ​​the end region of the water vapor channel, with the end region located on both sides of the central region.

[0019] Optionally, the cross-sectional shape of the water vapor channel in the first plane is circular, semi-circular, or elliptical, and the first plane is perpendicular to the surface of the polarizer used for light transmission.

[0020] Optionally, the projection shape of the water vapor channel on the isolation layer includes any one or any combination of the following shapes: multiple parallel straight lines, multiple straight lines converging at one end into a circle, and multiple sets of straight lines in different directions.

[0021] Secondly, embodiments of this application provide a display module, including: a display panel;

[0022] and a polarizer located on one side of the light-emitting direction of the display panel, wherein the polarizer is any of the above-mentioned polarizers.

[0023] Thirdly, this application also provides a display device, including the display module as described above.

[0024] This invention provides a polarizer, comprising a polarizer body and an isolation layer located inside or at least on one side of the polarizer body. The isolation layer is used to isolate moisture. The isolation layer includes a moisture channel communicating with the outside, which discharges the isolated moisture to the outside while preventing external moisture from entering the polarizer. Thus, when this polarizer is applied to a display module, the isolation layer can isolate internal moisture below the polarizer, and the moisture channel can promptly discharge it to the outside. Simultaneously, the moisture channel can prevent external moisture from entering the display module, thereby preventing moisture from reaching the cover plate and optical adhesive layer of the display module and forming bubbles. This avoids bubbles affecting the display effect, thereby improving the display effect of the display module. Attached Figure Description

[0025] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0026] Figure 1 This is a schematic diagram of the structure of a polarizer provided in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of a polarizer provided in another embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the structure of a polarizer provided in another embodiment of this application;

[0029] Figure 4 This is a schematic diagram of the water vapor channel in the polarizer provided in the embodiments of this application;

[0030] Figure 5 This is a schematic diagram of the distribution of water vapor channels in the polarizer provided in the embodiments of this application;

[0031] Figure 6 This is a schematic diagram of the distribution of water vapor channels in a polarizer provided in another embodiment of this application;

[0032] Figure 7 This is a schematic diagram of the distribution of water vapor channels in a polarizer provided in another embodiment of this application;

[0033] Figure 8 This is a schematic diagram of the distribution of water vapor channels in a polarizer provided in another embodiment of this application;

[0034] Figure 9 This is a schematic diagram of the distribution of water vapor channels in a polarizer provided in another embodiment of this application;

[0035] Figure 10 This is a schematic diagram of the structure of the isolation layer including the isolation component in the polarizer provided in the embodiments of this application;

[0036] Figure 11 This is a schematic diagram of the structure of an isolation layer including an isolation component in a polarizer provided in another embodiment of this application;

[0037] Figure 12 This is a schematic diagram of the structure of the isolation layer including the isolation component in a polarizer provided in another embodiment of this application;

[0038] Figure 13 This is a schematic diagram of the water vapor channel in the polarizer provided in the embodiments of this application;

[0039] Figure 14 This is a schematic diagram of the water vapor channel in a polarizer provided in another embodiment of this application;

[0040] Figure 15 This is a schematic diagram of the structure of the display module provided in the embodiment of this application.

[0041] 1-Polarizing film;

[0042] 11-Polarizer body;

[0043] 12-Isolation layer;

[0044] 111 - Polarizing capping layer;

[0045] 112 - Polarizing layer;

[0046] 113 - First double-sided adhesive layer;

[0047] 114 - Compensation film layer;

[0048] 115 - Second double-sided adhesive layer;

[0049] 116 - Auxiliary cover plate layer;

[0050] 121 - Water vapor channel;

[0051] 2-Display cover;

[0052] 3-Optical adhesive layer;

[0053] 4-Screen body. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] Currently, OLED modules on the market typically use circular polarizers that consist of multiple layers, including a polarizing cover layer, a double-sided adhesive layer such as pressure-sensitive adhesive (PSA), and a compensation film layer. The polarizing cover layer can be made of triacetyl cellulose (TAC) or cycloolefin polymer (COP). The polarizing layer material can be polyvinyl alcohol (PVA). The compensation film layer, i.e., the circular polarizing layer, includes λ / 4 and λ / 2 polarizing materials. These layers together form the polarizer, which, together with optical adhesive, a display cover, and other display components, forms the display module.

[0056] During the production and use of display devices including the aforementioned display modules, external moisture and moisture generated inside the display device, especially moisture generated below the polarizer inside the display device, can easily pass through the polarizer and reach between the OCA and the display cover, forming OCA bubbles. The presence of OCA bubbles will greatly reduce the display effect and reduce the user experience.

[0057] Polarizing film example:

[0058] Figure 1 This is a schematic diagram of the structure of the polarizer provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the polarizer 1 provided in this embodiment includes a polarizer body 11 and an isolation layer 12, with the isolation layer 12 located inside the polarizer body 11 or at least on one side. The isolation layer 12 includes a water vapor channel 121 communicating with the outside world. The isolation layer 12 is used to isolate water vapor, and the water vapor channel 121 is used to discharge the isolated water vapor to the outside world and prevent external water vapor from entering the polarizer 1.

[0059] Specifically, the polarizer body 11 includes multiple stacked functional film layers and a polarizing cover plate. The isolation layer 12 can be stacked with the functional film layers and the polarizing cover plate. The isolation layer 12 can be located between any two adjacent functional film layers, or between the functional film layers and the polarizing cover plate, that is, the isolation layer 12 is located inside the polarizer body 11. The isolation layer 12 can also be located at least on one side of the polarizer body 11, for example, on a light-transmitting plane of the polarizer 1.

[0060] The material of the isolation layer 12 can be various blends or composite materials, such as high-density polyethylene / polyamide blends, ethylene-vinyl alcohol composites, and polyvinylidene chloride composites. Composite materials can include polyolefins, polyamides, polyester resins, polyester resin / polyvinylidene chloride composites, polyester resin / polyamide / deoxygenated layer composites, polyester resin / ethylene dinaphthalate, and nanocomposite barrier materials (montmorillonite combined with polyamide, polyester resin, and polyolefins). Different materials and varying proportions of materials in the mixture or composite can be selected according to actual needs to achieve different water and air barrier effects. For example, a material with a water vapor penetration rate of less than 0.08 g / m³ can be selected. 2 / day's materials.

[0061] It should be noted that in practical applications, the polarizer 1 is generally stacked with other components such as the display cover and screen to form a display module. The polarizer 1 is generally located below the display cover and above the screen. In this application, by setting an isolation layer 12 for water and air isolation between any two functional film layers inside the polarizer body 11, or by setting an isolation layer 12 for water and air isolation on any side of the polarizer body 11, that is, the outermost side of the polarizer body 11 closest to the display cover or the side closest to the screen, it is possible to effectively prevent water vapor under the internal polarizer 1 from passing through the polarizer 1 and reaching the area between the display cover and the optical adhesive during the production and use of the display module, thereby avoiding the formation of OCA bubbles in this area and improving the display effect.

[0062] Furthermore, a water vapor channel 121 is also provided on the isolation layer 12. By designing the shape of the water vapor channel 121 or setting an isolation component in the contact area between the water vapor channel 121 and the outside, the internal water vapor can be discharged to the outside, and the external water vapor can be prevented from entering the water vapor channel 121. This prevents the water vapor isolated by the isolation layer 12 from existing inside the polarizer 1 for a long time, and prevents the external water vapor from entering the polarizer 1 through the water vapor channel 121. This prevents the water vapor in the display module from forming OCA bubbles between the cover plate and the OCA, thereby improving the display effect.

[0063] The polarizer 1 provided by the present invention can isolate moisture in the part of the display module located below the polarizer 1 by setting an isolation layer 12, preventing it from reaching the area between the cover plate and the OCA in the display module, thus preventing the formation of OCA bubbles and improving the display effect of the display module. Moreover, by setting a moisture channel 121 on the isolation layer 12, the isolated moisture can be discharged to the outside in a timely manner. At the same time, by designing the structure of the moisture channel 121 or setting an isolation component, external moisture is prevented from entering the polarizer 1 through the moisture channel 121, further improving the water-proof effect and improving the stability of the polarizer 1 and the display module.

[0064] It should be noted that in this application, the water vapor channel 121 is connected to the outside world, which can be that both ends are connected to the outside world or that only one end is connected to the outside world. Moreover, the connection method can be a direct connection or a connection achieved after a certain degree of isolation through an isolation component, thereby realizing the discharge of water vapor in the channel to the outside world.

[0065] In some embodiments, the polarizer body 11 includes a plurality of functional film layers and a polarizing cover layer. Figure 2 This is a schematic diagram of the structure of a polarizer provided in another embodiment of this application. For example... Figure 2 As shown, the polarizer body 11 includes multiple functional film layers and a polarizing cover layer 111. The polarizer body 11 may include, from top to bottom, a polarizing cover layer 111, a polarizing layer 112, a first double-sided adhesive layer 113, a compensation film layer 114, and a second double-sided adhesive layer 115, stacked sequentially. The polarizing cover layer 111 can be made of TAC or COP material, the polarizing layer 112 can be made of PVA material, and both the first double-sided adhesive layer 113 and the second double-sided adhesive layer 115 can be pressure-sensitive adhesive (PSA).

[0066] It is understandable that, since the polarizing cover layer 111 is generally located on the outermost side of the polarizer body 11, that is, the aforementioned functional film layers are all located on one side of the polarizing cover layer 111, for ease of description, the side where the functional film layers are disposed is referred to as the first side of the polarizing cover layer 121. For example, if the polarizer body 11 is as follows... Figure 2 When placed as shown, the first side of the polarizing cover layer 111 is below the polarizing cover layer 111, and the side opposite to the first side is the second side of the polarizing cover layer 111 (i.e., Figure 2 Above the medium polarizing cover plate layer 111).

[0067] The isolation layer 12 in this application can be disposed between any two of the above-mentioned functional film layers, or disposed between the functional film layer and the polarizing cover layer 111 (closely attached to the first side of the polarizing cover layer 111), or disposed above the polarizing cover layer 111 (closely attached to the second side of the polarizing cover layer 111).

[0068] It should be noted that the number of isolation layers 12 in this application can be one or more. For example, multiple isolation layers 12 can be set at different locations mentioned above to further enhance the water and air barrier effect. Moreover, when multiple isolation layers 12 are set, the thickness and material of each isolation layer 12 can be equal or unequal, and can be selected according to the actual water and air barrier requirements to meet the needs of different scenarios.

[0069] In other embodiments, an auxiliary cover layer 116 for enhancing the strength of the functional film layers can be provided between the functional film layers in the polarizer body 11. The material and function of the auxiliary cover layer 116 can be the same as those of the polarizing cover layer 111 mentioned above. In this case, the polarizer body 11 includes a polarizing cover layer 111, a polarizing layer 112, an auxiliary cover layer 116, a first double-sided adhesive layer 113, a compensation film layer 114, and a second double-sided adhesive layer 115, which are stacked sequentially from top to bottom. In this case, the isolation layer 12 can also be provided between the auxiliary cover layer 116 and each of the functional film layers, in addition to the placement positions mentioned in the above embodiments.

[0070] In the above embodiments of this application, by providing the isolation layer 12, moisture below the isolation layer 12 can be effectively prevented from passing through the isolation layer 12 and reaching the area between the display cover and the optical adhesive located above the isolation layer 12 (specifically above the polarizer 1), thereby preventing the formation of bubbles in this area and affecting the display effect of the display device. Based on the above embodiments, in order to prevent the isolated moisture from remaining in the polarizer 1 for a long time, moisture channels 121 can be provided in some areas of the isolation layer 12 to discharge the isolated moisture to the outside.

[0071] It is understandable that the purpose of the isolation layer 12 is to isolate the water vapor below the isolation layer 12. Since the isolated water vapor is located below the isolation layer 12, the water vapor channel 121 for discharging the isolated water vapor also needs to be located below the isolation layer 12, so that the isolated water vapor can flow out through the water vapor channel 121. Specifically, as shown... Figure 4 As shown. The water vapor channel 121 can be a separate structure, even below the isolation layer 12, to receive water vapor isolated by the isolation layer 12; or it can be a structure formed by engraving and etching directly on the lower surface of the isolation layer 12, and integrated with the isolation layer 12.

[0072] It should be noted that, due to different placement positions of the isolation layer 12, the water vapor channel 121 may be located on the side of the isolation layer 12 away from the polarizing cover layer 111, or on the side of the isolation layer 12 close to the polarizing cover layer 111, but it is always located below the isolation layer 12. For example, when the isolation layer 12 is located between adjacent functional film layers, and / or between the polarizing cover layer 111 and the functional film layer, that is, when the isolation layer 12 is located in the region on the first side (below) of the polarizing cover layer 111, the water vapor channel 121 is located on the side of the isolation layer 12 away from the polarizing cover layer 111; while when the isolation layer 12 is located in the region on the second side (above) of the polarizing cover layer 111, the water vapor channel 121 is located on the side of the isolation layer 12 close to the polarizing cover layer 111.

[0073] In the polarizer provided in this application, in order to improve the effect of water vapor isolation and water vapor discharge of the water vapor channel 121, the shape and distribution of the water vapor channel 121 can be designed. For example, the cross-sectional shape of the water vapor channel 121 can be designed as a circle, a semi-circle or an ellipse.

[0074] Specifically, such as Figure 4 As shown, the cross-section described above is formed by the first plane, which is parallel to and perpendicular to the surface of the polarizer 1 used for light transmission. That is to say, Figure 4 This is a cross-sectional view of isolation layer 121. Figure 4 As can be seen, the cross-sectional shape of the water vapor channel 121 is designed to be circular or semi-circular, meaning the water vapor channel 121 can be tubular, including semi-circular and circular tubular shapes. Of course, the cross-sectional shape of the water vapor channel 121 can also be set to other shapes, such as triangles, rectangles, or irregular shapes, depending on actual environmental requirements (different external water vapor compositions) and other reasons. By designing the cross-sectional shape of the water vapor channel 121, water vapor discharge is facilitated, preventing water vapor accumulation within the channel and improving the discharge effect on the isolated water vapor.

[0075] Furthermore, based on the above embodiments, the distribution of the water vapor channel 121 can be designed to further improve the water vapor emission effect of the water vapor channel 121. The projection shape of the water vapor channel 121 on the isolation layer 12 can be designed as any one or any combination of the following shapes: multiple parallel straight lines, multiple straight lines converging at one end into a circle, and multiple sets of straight lines in different directions.

[0076] Specifically, the water vapor channel 121 can be a straight channel, and it is composed of multiple sub-channels of similar size and shape. These sub-channels are parallel to each other, and the orthographic projection of the water vapor channel 121 onto the isolation layer 12 is a series of parallel straight lines, as shown below. Figure 5 and Figure 6 As shown; multiple sub-channels can also be grouped and distributed in different regions, with each sub-channel in each region arranged side by side and parallel, but the distribution direction between groups is different. In this case, the orthographic projection shape of the water vapor channel 121 on the isolation layer 12 is multiple groups of straight lines in different directions, as shown in the figure. Figure 7 As shown; multiple sub-channels can also be radially distributed, that is, multiple strip-shaped sub-channels converge at one end to a circular sub-channel. In this case, the orthographic projection shape of the water vapor channel 121 on the isolation layer 12 is multiple straight lines converging at one end to a circle, as shown in the figure. Figure 8 As shown; moreover, the above schemes can be combined, for example, simultaneously possessing radial and parallel distribution patterns, specifically as follows: Figure 9 As shown.

[0077] Alternatively, the water vapor channel 121 can also be a curved channel, similar to the straight channel described above, composed of multiple curved sub-channels of similar size and shape. The arrangement of these curved sub-channels can be the parallel arrangement, radial arrangement, or even an irregular arrangement mentioned in the straight channel diagram. Furthermore, the straight and curved channels can be combined, and the arrangement of the water vapor channel 121 can be flexibly varied according to actual needs. Different arrangement methods can maximize the water vapor discharge capacity of the channel to meet diverse requirements.

[0078] In this application, in order to discharge the isolated water vapor to the outside through the water vapor channel 121 and prevent the outside water vapor from entering the polarizer 1, an isolation component can be provided in the part of the water vapor channel 121 that is in contact with the outside. At this time, the water vapor channel 121 includes the channel body 1211 and the isolation component 1212.

[0079] Specifically, when both ends of the channel body 1211 come into contact with the outside world, such as Figure 5 and Figure 6 In the illustrated scheme, isolation components 1212 can be installed at both ends of the channel body 1211, allowing water vapor inside the channel body 1211 to pass through or more easily pass through the isolation components 1212 and be discharged to the outside, while water vapor from the outside cannot or does not easily pass through the isolation components 1212 and cannot or does not easily enter the channel body 1211. Specifically, as shown... Figure 10 As shown.

[0080] In other embodiments of this application, for the arrangement of the water vapor channel in the above embodiments (both ends are in contact with the outside), the isolation component 1212 can be set in the end regions of both ends of the channel body 1211, such as... Figure 11 The isolation component 1212 is flush with the end of the channel body 1211, thereby avoiding gaps that could easily come into contact with and accumulate external moisture, and further improving the isolation effect from external moisture.

[0081] Furthermore, in designs where the main body of the channel 1211 is not in contact with the outside at both ends, such as... Figure 8 In this scheme, since one end of the channel body 1211 is located inside the isolation layer 12 and does not come into contact with the outside, the isolation component 1212 can be set only in the area of ​​the channel body 1211 that comes into contact with the outside, saving materials and preventing the interruption of water and air circulation inside the channel body 1211.

[0082] In some specific implementations, the aforementioned isolation component 1212 can be implemented using a one-way water-proof membrane or a one-way gas-proof membrane. Specifically, for example, a one-way water-proof membrane can be placed at the end of the channel body 1211 that contacts the outside, and the membrane is configured to allow only liquid within the channel body 1211 to flow through it to the outside, while preventing external liquid from entering the channel body 1211. Similarly, a one-way gas-proof membrane can be provided, allowing only gas within the channel body 1211 to flow through it to the outside, while preventing external gas from entering the channel body 1211. Furthermore, both a one-way water-proof membrane and a one-way gas-proof membrane can be simultaneously installed in the channel body 1211 to achieve the function of simultaneously unidirectionally discharging liquid and unidirectionally discharging gas, as detailed below. Figure 12 As shown.

[0083] In practical applications, one-way water-barrier membranes can be directly achieved using special materials, such as one-way permeable fiber membranes, or through multi-layer structures, such as by appropriately setting hydrophilic and hydrophobic media to achieve one-way water permeability. One-way air-barrier membranes can be achieved using one-way permeable composite materials. Furthermore, in some embodiments of this application, since it is necessary to simultaneously achieve one-way water permeability and one-way air permeability, in addition to adding one-way water-barrier membranes and one-way air-barrier membranes as mentioned above, a membrane layer with both one-way water permeability and one-way air permeability can also be added, thereby increasing the overall integrity of the isolation component 1212 and improving the stability of the polarizer 1.

[0084] In other embodiments of this application, the structure of the water vapor channel 121 can be improved to make it easier to discharge water vapor in the water vapor channel 121 to the outside, while making it more difficult for water vapor from the outside to enter the water vapor channel 121.

[0085] Specifically, the water vapor channel 121 has a first cross-section and a second cross-section perpendicular to its length. The area of ​​the first cross-section is larger than the area of ​​the second cross-section. The first cross-section is the area of ​​the central region of the water vapor channel 121, and the second cross-section is the area of ​​the end regions of the water vapor channel 121, which are located on either side of the central region. In other words, the area of ​​the cavity in the central region of the water vapor channel 121 is larger than the area of ​​the cavities at both ends of the water vapor channel 121. Specifically, as shown... Figure 13 As shown.

[0086] By configuring the water vapor channel 121 in this way, when the liquid volume in the water vapor channel 121 accumulates to a certain level, it can flow from a wide area to a narrower area, allowing it to be discharged to the outside from the opening at the end of the water vapor channel 121, and the gas can flow to the outside more easily. As for the water vapor from the outside, because the opening between the water vapor channel 121 and the outside is small, it is not easy for the water vapor from the outside to enter the water vapor channel 121. This makes it easier for the water vapor in the water vapor channel 121 to be discharged, and the water vapor from the outside is not easy to enter the water vapor channel of the polarizer, that is, to enter the display module or display device, thereby protecting the display module or display device.

[0087] In other embodiments of this application, the cavity wall of the water-air channel 121 can be configured as a stepped shape, specifically as follows: Figure 14 As shown, this allows the water vapor in the water vapor channel 121 to first encounter less resistance when flowing to the outside, making its flow smoother, while the water vapor in the outside directly encounters greater resistance when entering the water vapor channel, further improving the effect of bidirectional flow difference.

[0088] In addition, based on the above-mentioned improvements to the water vapor channel structure, a membrane layer with unidirectional water isolation and unidirectional air isolation can be added simultaneously to further enhance the difference in bidirectional water vapor flow, making it easy for internal water vapor to flow out while making it difficult for external water vapor to flow in, thereby improving the stability of the polarizer and display module.

[0089] This application provides a polarizer 1, including a polarizer body 11 and an isolation layer 12. The polarizer body 11 includes multiple functional film layers and a polarizing cover layer 111. The isolation layer 12 can be disposed on any side of the polarizer body 11 and between any two functional film layers. Multiple isolation layers 12 can be disposed simultaneously at the aforementioned locations, thereby isolating moisture below the isolation layer 12 and preventing it from passing through the polarizer 1 and reaching the area between the cover plate and the OCA of the display module, thus forming OCA bubbles and improving the stability of the display module. This improves the display effect; moreover, a water vapor channel 121 is provided below the isolation layer 12, through which the water vapor isolated by the isolation layer 12 can be discharged to the outside, preventing water vapor from existing in the polarizer for a long time; and through the structural design of the water vapor channel 121 itself or the addition of the isolation component 1211, the water vapor in the channel can more easily flow to the outside, while the water vapor in the outside is difficult to flow into the channel, so that the polarizer and the display device can ensure the drainage and exhaust effect during production and use, and reduce the influence of external water vapor, further improving the stability of the polarizer 1 and the display device.

[0090] Display module example:

[0091] Based on the same inventive concept, this application also provides a display module, such as... Figure 15As shown, the display module includes a display panel and a polarizer 1 located on one side of the display panel in the direction of light emission, wherein the polarizer 1 is the polarizer provided in the above-described polarizer embodiment.

[0092] Specifically, the display panel includes a display cover plate 2, an optical adhesive layer 3, a screen body 4, and may also include a foam / copper foil composite material layer disposed at the bottom of the display panel. The polarizer 1 can be located between the screen body 4 and the optical adhesive layer 3. Additionally, the isolation layer mentioned in the polarizer embodiment can be disposed between other film layers besides the polarizer 1 to further improve the water and air barrier effect.

[0093] The display module provided in this application includes a polarizer. The polarizer, by setting an isolation layer, isolates moisture below the isolation layer 12, preventing this moisture from passing through the polarizer 1 and reaching the area between the cover plate and the OCA of the display module, thus forming OCA bubbles. This improves the stability of the display module and enhances the display effect. Furthermore, a moisture channel 121 is provided below the isolation layer 12, allowing the moisture isolated by the isolation layer 12 to be discharged to the outside, preventing moisture from remaining inside the display module for extended periods. Moreover, through the structural design of the moisture channel 121 itself or the addition of an isolation component 1211, moisture within the channel flows more easily to the outside, while external moisture is difficult to flow into the channel. This ensures effective drainage and ventilation during the production and use of the display device, reducing the impact of external moisture and further improving the stability of the display device.

[0094] Display device embodiment:

[0095] Based on the same inventive concept, this application also provides an electronic device, such as a mobile phone and a tablet, which includes a display module as mentioned in the above-described display module embodiment. By setting an isolation layer inside the display module, the water vapor generated inside the electronic device can be effectively isolated from flowing between the cover plate and the optical adhesive, thereby preventing water vapor from forming bubbles in this area and affecting the display. Moreover, by setting water vapor channels on the isolation layer, the isolated water vapor can be discharged in time, reducing the entry of external water vapor into the electronic device and improving the stability of the electronic device.

[0096] The various embodiments described in this specification are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A polarizer, characterized in that, It includes a polarizer body and an isolation layer located inside or at least on one side of the polarizer body; The isolation layer is used to isolate moisture; The isolation layer includes a water vapor channel that communicates with the outside world. The water vapor channel is used to discharge the isolated water vapor to the outside world and prevent water vapor from the outside world from entering the polarizer. The water vapor channel includes a channel body and an isolation component; The isolation components are disposed at both ends of the channel body near the outside. The isolation component is used to discharge liquid and / or gas within the channel body to the outside and to prevent external liquid and / or gas from entering the channel body. The shape of the orthographic projection of the water vapor channel onto the isolation layer includes any one or any combination of the following shapes: multiple parallel straight lines, multiple straight lines converging at one end into a circle, and multiple sets of straight lines in different directions.

2. The polarizer according to claim 1, characterized in that, The polarizer body includes a polarizing cover layer and a plurality of functional film layers stacked sequentially. The polarizing cover layer includes a first side and a second side opposite to each other, and the plurality of functional film layers are all located on the first side of the polarizing cover layer. The isolation layer is located between adjacent functional film layers, and / or, the isolation layer is located between the polarizing cover layer and the functional film layer, and / or, the isolation layer is located on the second side of the polarizing cover layer.

3. The polarizer according to claim 2, characterized in that, When the isolation layer is located between adjacent functional film layers, and / or when the isolation layer is located between the polarizing cover layer and the functional film layer, the water vapor channel is located on the side of the isolation layer away from the polarizing cover layer; When the isolation layer is located on the second side of the polarizing cover layer, the water vapor channel is located on the side of the isolation layer closer to the polarizing cover layer.

4. The polarizer according to claim 1, characterized in that, The isolation component includes a one-way water-permeable membrane and / or a one-way air-permeable membrane; The one-way permeable membrane is used to drain the liquid inside the channel body to the outside and prevent external liquid from entering the channel body; The one-way breathable membrane is used to discharge the gas inside the channel body to the outside and prevent outside gas from entering the channel body.

5. The polarizer according to claim 1, characterized in that, The water vapor channel has a first cross section and a second cross section perpendicular to the length direction of the water vapor channel, and the area of ​​the first cross section is larger than the area of ​​the second cross section. The first cross-sectional area is the cross-sectional area of ​​the central region of the water-air channel, and the second cross-sectional area is the cross-sectional area of ​​the end region of the water-air channel.

6. The polarizer according to claim 1, characterized in that, The cross-sectional shape of the water vapor channel in the first plane is circular, semi-circular, or elliptical, and the first plane is perpendicular to the surface of the polarizer used for light transmission.

7. A display module, characterized in that, include: Display panel; A polarizer located on one side of the display panel in the direction of light emission, wherein the polarizer is the polarizer described in any one of claims 1-6.

8. An electronic device, characterized in that, Includes the display module as described in claim 7.

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