Display module and display device

Abstract

The invention relates to a display module and a display device. The display module comprises a light-emitting layer, a polaroid and an adhesive layer. The polaroid is located on the light-emitting side of the light-emitting layer. The polaroid comprises a base material layer and a plurality of protruding structures located on the side, close to the light-emitting layer, of the base material layer or located on the side, away from the light-emitting layer, of the base material layer. The adhesive layer is filled between any two adjacent convex structures; wherein the refractive index of the convex structure is different from that of the adhesive layer. According to the invention, the plurality of convex structures are integrated in the polaroid, so that a good flash point resisting effect can be realized on the basis of not obviously changing the structure and the thickness of the existing module.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display module and a display device. Background Art

[0002] Glare is an undesirable optical phenomenon caused by specular reflections from the display module's cover plate surface. It significantly reduces visibility and has long-term effects on eye health. Texturing the cover plate's surface changes it from a mirrored finish to a roughened one. This roughened surface produces a more uniform diffuse reflection of ambient light, thereby reducing glare and improving display module visibility.

[0003] Texturing the surface of the cover plate can cause other problems, a typical example being an optical defect known as sparkle. Sparkle is a phenomenon in which the human eye observes unevenly distributed colored dots on a display screen. Texturing causes the surface of the cover plate to have irregular undulations, and the light emitted by the pixels is unevenly scattered on the textured surface, resulting in uneven distribution of light intensity and chromaticity. Users can see sparkles when viewing the display screen. Sparkle is also affected by the pixel density of the display panel. The higher the pixel density, the more severe the sparkle. When the pixel density exceeds 250, sparkle will seriously affect the viewing experience.

[0004] However, current solutions to the flash point problem will significantly increase the overall thickness of the display module, which is not conducive to the realization of ultra-thin display technology. Summary of the Invention

[0005] The embodiments of the present application provide a display module and a display device, which can achieve a good anti-flash point effect without significantly changing the existing module structure and thickness.

[0006] To achieve the above objectives, according to a first aspect of the present application, a display module is provided, comprising:

[0007] a luminescent layer;

[0008] a polarizer located on the light-emitting side of the light-emitting layer; the polarizer includes a substrate layer, and a plurality of protruding structures located on a side of the substrate layer close to the light-emitting layer or on a side of the substrate layer away from the light-emitting layer; and

[0009] A glue layer is filled between any two adjacent protrusion structures;

[0010] Wherein, the refractive index of the protrusion structure is different from the refractive index of the adhesive layer.

[0011] Optionally, any two of the protruding structures have the same structure; among the multiple protruding structures arranged in the same direction, the distance between any two adjacent protruding structures is equal.

[0012] Optionally, the plurality of protruding structures are arranged in multiple rows and columns in the first direction and the second direction, and the first direction and the second direction are arranged crosswise;

[0013] In the first direction and / or the second direction, edges of the cross sections of the plurality of protrusion structures are in the shape of a sine curve, a cosine curve, or a square wave.

[0014] Optionally, the plurality of protrusion structures are distributed irregularly.

[0015] Optionally, the distance between any two adjacent protruding structures is greater than or equal to 3 micrometers and less than or equal to 50 micrometers; and the height of the protruding structure in the thickness direction of the substrate layer is greater than 0 and less than or equal to 50 micrometers.

[0016] Optionally, the difference between the refractive index of the protrusion structure and the adhesive layer is greater than or equal to 0.03.

[0017] Optionally, the refractive index of the protrusion structure is greater than the refractive index of the adhesive layer.

[0018] Optionally, the material of the protruding structure is selected from at least one of polyurethane, acrylate and epoxy resin.

[0019] Optionally, the material of the adhesive layer is selected from transparent optical adhesive.

[0020] Optionally, the polarizer further includes a linear polarization layer located on a side of the substrate layer close to the light-emitting layer, and the protruding structure is located on a side of the linear polarization layer away from the light-emitting layer.

[0021] Optionally, the polarizer further includes a linear polarization layer located on a side of the substrate layer close to the light-emitting layer, and the protruding structure is located on a side of the linear polarization layer close to the light-emitting layer.

[0022] Optionally, the protruding structure is in direct contact with the substrate layer.

[0023] Optionally, the display module further includes an anti-glare layer, and the anti-glare layer is located on a side of the polarizer away from the light-emitting layer.

[0024] Optionally, the protruding structure is located on a side of the substrate layer away from the light-emitting layer, the adhesive layer covers the substrate layer and the protruding structure, and is in direct contact with a side of the anti-glare layer close to the light-emitting layer.

[0025] According to a second aspect of the present application, a display device is provided, comprising the display module described above.

[0026] In the display module and display device of the embodiment of the present application, by integrating multiple protruding structures into the polarizer, filling the multiple protruding structures with a glue layer, and the refractive index of the protruding structure is different from the refractive index of the glue layer, the light emitted by the light-emitting layer can be emitted after at least one of refraction, reflection and total reflection at the interface between the protruding structure and the glue layer, and the emitted light is relatively evenly diffused in all directions. When the light-emitting side of the display module is provided with an anti-glare textured cover plate (i.e., an anti-glare layer), the light diffused by the protruding structure and the glue layer can be scattered more evenly after passing through the cover plate, avoiding the situation where the intensity of the light is locally concentrated on the surface of the cover plate, thereby improving the flash point problem caused by anti-glare. More importantly, since the protruding structure of the present application is integrated into the polarizer, it can be formed by patterned design. Compared with the solution of setting an independent light diffusion layer between the polarizer and the textured cover plate, the present application does not need to separately make a light diffusion layer with a larger thickness, and can achieve a good anti-flash point effect without significantly changing the structure and thickness of the existing display module.

[0027] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0029] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0030] Figure 1 This is a schematic diagram of a normal display screen provided by this application;

[0031] Figure 2 is a schematic diagram of a display screen with a flash point provided by the present application;

[0032] Figure 3 This is a schematic diagram of light emission from a display module when the cover surface provided by the present application is not textured;

[0033] Figure 4 This is a schematic diagram of the light output of the display module after the cover surface is textured as provided in the application;

[0034] Figure 5 is a schematic structural diagram of an exemplary display module provided in this application;

[0035] Figure 6This is a light emission schematic diagram of a display module provided by the present application that does not include a light diffusion layer;

[0036] Figure 7 This is a light-emitting schematic diagram of a display module including a light diffusion layer provided in the present application;

[0037] Figure 8 1 is a schematic structural diagram of a display module provided in an embodiment of the present application;

[0038] Figure 9 yes Figure 8 Schematic diagram of the structure of the middle polarizer;

[0039] Figure 10 Schematic diagram of a substrate layer and a protrusion structure provided in an embodiment of the present application;

[0040] Figure 11 This is a schematic structural diagram of a substrate layer, a protruding structure, and an adhesive layer provided in an embodiment of the present application;

[0041] Figure 12 It is a structural schematic diagram of a display device provided in an embodiment of the present application.

[0042] Description of reference numerals:

[0043] 1(1'), display module; 2, light-emitting layer; 3(3'), polarizer; 4, first optical adhesive layer; 5, light diffusion layer; 6, second optical adhesive layer; 7, cover plate; 8, texture structure; 9, adhesive layer; 10, anti-glare layer; 11, base material layer; 12, linear polarization layer; 13, raised structure; 14, array substrate; 15, pressure-sensitive adhesive layer; 16, compensation layer; 17, display device; 18, housing; X, first direction; Y, second direction; Z, thickness direction. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0045] The surface of the cover glass (CG) on the light-emitting side of the display module can be textured to achieve anti-glare (AG) effect. The working principle is that the texture makes the surface of the cover glass rough, which can convert the original specular reflection into a more uniform diffuse reflection, thereby improving the glare problem. However, the texture of the cover glass surface will cause optical defects such as flash points. Usually, under the same display screen, the normal display screen such as Figure 1, and the display screen with flash point phenomenon is as follows Figure 2 As shown. Figure 1 and Figure 2 It can be seen that flash point is a phenomenon in which the human eye observes unevenly distributed colored dots on the display screen.

[0046] like Figure 3 As shown, when the cover surface of the display module is not textured, the surface of the cover CG is flat, and the RGB three-color light emitted by the RGB pixels of the light-emitting layer will not be scattered on the cover CG. Therefore, the values ​​of the color coordinates LAB at positions P and Q are almost completely consistent, so the display screen is as shown. Figure 1 As shown, there will be no flash point phenomenon. Figure 4 As shown, when the cover of the display film group has a textured surface, the texturing makes the surface of the cover CG' irregularly undulating. The RGB three-color light emitted by the RGB pixels of the light-emitting layer is unevenly scattered on the textured surface of the cover CG', and the light intensity and chromaticity are unevenly distributed. Therefore, there is a large difference in the value of the color coordinate LAB* at position P and position Q. Therefore, the display screen is as shown in FIG. Figure 2 As shown, users will see flickering when viewing the screen. Flickering is affected by the display device's pixel density (PPI). As the PPI increases, flickering becomes more severe. The PPI of current display devices (such as mobile phones and tablets) is far greater than 250. When the PPI exceeds 250, flickering can become so severe that it affects the viewing experience of the screen.

[0047] An exemplary method for improving the above-mentioned flash point problem is to set a light diffusion layer between the light-emitting layer and the cover plate with a textured structure. Figure 5 As shown, the display module 1' comprises, from bottom to top, a light emitting layer 2, a polarizer 3', a first optical adhesive layer 4, a light diffusion layer 5, a second optical adhesive layer 6 and a cover plate 7 with a textured surface. Figure 6 As shown in FIG, when no light diffusion layer is provided between the light emitting layer 2 of the display module and the cover plate 7 having the texture structure 8, the light emitted by the pixels of the light emitting layer 2 passes through the cover plate 7, and the intensity of the light is locally concentrated on the surface of the cover plate 7, resulting in the flash point phenomenon. Figure 7As shown, when a light diffusion layer 5 is provided between the light emitting layer 2 of the display module 1' and the cover plate 7 having the texture structure 8, the light emitted by the pixels of the light emitting layer 2 passes through the light diffusion layer 5, and the spot size is larger than the size of the texture structure 8 on the cover plate 7, that is, the light diffusion layer 5 makes the light diffuse relatively evenly in all directions, making the scattered light on the surface of the cover plate 7 more uniform, avoiding the situation where the intensity of the light is locally concentrated on the surface of the cover plate 7, thereby suppressing glare while improving the flash point situation. However, since the thickness of the independent light diffusion layer 5 is relatively large, and when the independent light diffusion layer 5 is provided between the light emitting layer 2 and the cover plate 7, it needs to be connected to the upper and lower film layers through two adhesive layers (such as the first optical adhesive layer 4 and the second optical adhesive layer 6), Figure 5 The solution shown will result in a significant increase in the overall thickness of the display module 1 ′, which is not conducive to the realization of ultra-thin display technology.

[0048] To address the aforementioned issues, the present application provides a new display module and display device that integrates a light diffusion structure directly onto a polarizer, thereby integrating the anti-flash point function into the polarizer material. This allows for achieving a good anti-flash point effect without changing the existing module structure and thickness. For details, please refer to the following embodiments.

[0049] like Figure 8 and Figure 9 As shown, an embodiment of the present application provides a display module 1, which includes a light-emitting layer 2, a polarizer 3, and an adhesive layer 9. The polarizer 3 is located on the light-emitting side of the light-emitting layer 2. The polarizer 3 includes a substrate layer 11, and a plurality of protruding structures 13 located on the side of the substrate layer 11 close to the light-emitting layer 2 or on the side of the substrate layer 11 away from the light-emitting layer 2. The adhesive layer 9 is filled between any two adjacent protruding structures 13. The refractive index of the protruding structures 13 is different from the refractive index of the adhesive layer 9.

[0050] As will be appreciated, the adhesive layer 9 covers the sidewalls of the raised structures 13, and the refractive index of the raised structures 13 differs from that of the adhesive layer 9. This allows light emitted from the light-emitting layer 2 to undergo at least one of refraction, reflection, and total reflection at the interface between the raised structures 13 and the adhesive layer 9, thereby allowing the light to diffuse relatively evenly in all directions. In other words, the multiple raised structures 13 and the adhesive layer 9 cooperate to provide a light diffusion function.

[0051] In some embodiments, the display module 1 further includes an anti-glare layer 10 , and the anti-glare layer 10 is located on a side of the polarizer 3 facing away from the light-emitting layer 2 .

[0052] In some embodiments, as Figure 6 and Figure 7As shown, the anti-glare layer 10 includes a cover plate 7 and a textured structure 8 formed on the side of the cover plate 7 facing away from the light-emitting layer 2. The textured structure 8 roughens the surface of the cover plate 7, thereby achieving an anti-glare effect. Of course, the structure of the anti-glare layer 10 is not limited in this embodiment of the application.

[0053] In some embodiments, the material of the cover plate 7 includes glass or polyimide, but is not limited thereto.

[0054] It can be understood that the cooperation between the raised structure 13 and the adhesive layer 9 allows the light emitted by the light-emitting layer 2 to diffuse relatively evenly in all directions to the anti-glare layer 10, making the scattered light on the surface of the anti-glare layer 10 more uniform, avoiding the occurrence of local concentration of light intensity on the surface of the anti-glare layer 10, thereby suppressing glare while improving the flash point.

[0055] In the embodiment of the present application, by integrating multiple raised structures 13 into the polarizer 3, filling the multiple raised structures 13 with a glue layer 9, and the refractive index of the raised structures 13 is different from the refractive index of the glue layer 9, the light emitted by the light-emitting layer 2 can be emitted after undergoing at least one of refraction, reflection, and total reflection at the interface between the raised structures 13 and the glue layer 9, and the emitted light is relatively evenly diffused in all directions toward the anti-glare layer 10. This improves the uniformity of light scattering on the surface of the anti-glare layer 10 and avoids the occurrence of localized concentration of light intensity on the surface of the anti-glare layer 10, thereby improving the flash point problem. More importantly, because the raised structures 13 of the present application are integrated into the polarizer 3, they can be formed through a patterned design. Compared with the solution of providing an independent light diffusion layer 5 between the polarizer 3 and the anti-glare layer 10, the present application does not require the production of a separately thick light diffusion layer 5, and can achieve a good anti-flash point effect without significantly changing the structure and thickness of the existing display module 1.

[0056] In some embodiments, the polarizer 3 further includes a linear polarization layer 12 located on a side of the substrate layer 11 close to the light-emitting layer 2 , and the protruding structure 13 is located on a side of the linear polarization layer 12 away from the light-emitting layer 2 .

[0057] In some other embodiments, the protruding structure 13 is located on a side of the linear polarization layer 12 close to the light-emitting layer 2 .

[0058] It is understood that the protruding structure 13 disposed on either side of any film layer in the polarizer 3 can scatter light. To avoid the protruding structure 13 having a negative impact on the polarization effect of the polarizer 3, the embodiment of the present application preferably disposes the protruding structure 13 on the side of the linear polarization layer 12 facing away from the light-emitting layer 2, that is, disposes the protruding structure 13 on the light-emitting side of the linear polarization layer 12.

[0059] In some embodiments, the material of the linear polarization layer 12 is selected from polyvinyl alcohol, but is not limited thereto.

[0060] In some embodiments, the raised structure 13 is in direct contact with the substrate layer 11. That is, the raised structure 13 is formed directly on one side of the substrate layer 11, and no adhesive layer is required between the raised structure 13 and the substrate layer 11 of the polarizer 3. This design saves an adhesive layer, further reducing the thickness of the display module 1.

[0061] It is understood that the protruding structure 13 can be formed directly on the surface of the substrate layer 11 of the polarizer 3 through a patterning process. For example, the protruding structure 13 can be formed by coating and embossing technology, but is not limited thereto.

[0062] In some embodiments, the preparation process of the protruding structures 13 includes: first forming a coating layer on the surface of the substrate layer 11 of the polarizer 3 ; and then performing embossing on the coating layer to form a plurality of protruding structures 13 .

[0063] It is understandable that the protruding structure 13 may also be formed by deposition and etching techniques, and the specific process selection depends on the material type of the protruding structure 13 .

[0064] In a preferred embodiment, the raised structure 13 is in direct contact with the side of the substrate layer 11 facing away from the light-emitting layer 2. That is, the raised structure 13 is located on the surface of the polarizer 3. In this case, the adhesive layer 9 and the raised structure 13 are disposed on the same side of the substrate layer 11, and the side of the substrate layer 11 facing away from the raised structure 13 can be connected to the linear polarization layer 12 via an adhesive layer.

[0065] It can be understood that when the protruding structure 13 is arranged on the side of the substrate layer 11 away from the light-emitting layer 2, during the production process of the polarizer 3, the process of producing the protruding structure 13 can be added to the last process of the production process of the conventional polarizer. This operation will not affect the production process of other film layers in the polarizer 3, which is conducive to simplifying the process and saving costs.

[0066] In some embodiments, the distance between any two adjacent protrusion structures 13 is greater than or equal to 3 micrometers and less than or equal to 50 micrometers; the height of the protrusion structure 13 in the thickness direction Z of the substrate layer 11 is greater than 0 and less than or equal to 50 micrometers.

[0067] In a preferred embodiment, the distance between any two adjacent protrusion structures 13 is greater than or equal to 3 micrometers and less than or equal to 20 micrometers.

[0068] It can be understood that by adjusting the spacing between the multiple protrusion structures 13 and the height of the protrusion structures 13, the light emitted by the light-emitting layer 2 can be more evenly diffused onto the anti-glare layer 10 when it is incident on the interface between the protrusion structure 13 and the adhesive layer 9, thereby facilitating the realization of a good anti-flash point effect.

[0069] In a preferred embodiment, the height of the protrusion structure 13 in the thickness direction Z of the substrate layer 11 is greater than 0 and less than or equal to 20 micrometers.

[0070] In a more preferred embodiment, the height of the protrusion structure 13 in the thickness direction Z of the substrate layer 11 is greater than 0 and less than or equal to 15 micrometers.

[0071] It can be understood that by adjusting the height of the protruding structure 13 , the overall thickness of the display module 1 can be reduced, thereby facilitating the realization of an ultra-thin display.

[0072] In some embodiments, as Figure 10 As shown, any two protrusion structures 13 have the same structure; among multiple protrusion structures 13 arranged in the same direction, the spacing between any two adjacent protrusion structures 13 is equal. In other words, the shapes and heights of the multiple protrusion structures 13 remain consistent, and the multiple protrusion structures 13 are evenly distributed on the surface of the substrate layer 11. This design helps improve the uniformity of light diffusion on the protrusion structures 13 and simplifies the manufacturing process of the protrusion structures 13.

[0073] In a specific embodiment, if Figure 9 As shown, multiple raised structures 13 are arranged in multiple rows and columns in a first direction X and a second direction Y, intersecting the first direction X and the second direction Y. In the first direction X and / or the second direction Y, the edges of the cross-sections of the multiple raised structures 13 exhibit, but are not limited to, a sine curve, a cosine curve, or a square wave shape. This design further improves the uniformity of light diffusion across the raised structures 13, thereby further enhancing the scattering uniformity of the anti-glare layer 10 and further enhancing the anti-flare effect.

[0074] In some embodiments, the first direction X and the second direction Y are perpendicular to each other, and the thickness direction Z is perpendicular to the first direction X and the second direction Y.

[0075] Of course, in other embodiments, the plurality of protrusion structures 13 may be distributed irregularly. In other words, the shapes and heights of the plurality of protrusion structures 13 may be different, and the spacing between different protrusion structures 13 may also be different, as long as the light diffusion effect can be achieved.

[0076] It can be understood that the multiple protrusion structures 13 form a grating structure to achieve a light diffusion effect, so that the light emitted by the light-emitting layer 2 can be emitted in different directions relatively evenly after being diffused by the multiple protrusion structures 13, which is equivalent to dispersing the light emitted by the light-emitting layer 2.

[0077] In some embodiments, the refractive index of the protrusion structure 13 is greater than the refractive index of the adhesive layer 9. Of course, in other embodiments, the refractive index of the protrusion structure 13 may also be less than the refractive index of the adhesive layer 9. The present embodiment is described by taking the case where the refractive index of the protrusion structure 13 is greater than the refractive index of the adhesive layer 9 as an example.

[0078] In some embodiments, the difference in refractive index between the protrusion structure 13 and the adhesive layer 9 is greater than or equal to 0.03. In a preferred embodiment, the difference in refractive index between the protrusion structure 13 and the adhesive layer 9 is greater than or equal to 0.05. By adjusting the difference in refractive index between the protrusion structure 13 and the adhesive layer 9, an effective light diffusion effect can be achieved.

[0079] In some embodiments, the refractive index of the protrusion structure 13 is greater than or equal to 1.6, but is not limited thereto.

[0080] In some embodiments, the material of the protrusion structure 13 is selected from at least one of polyurethane, acrylate, and epoxy resin. When the protrusion structure 13 is selected from at least one of these materials, the requirements of the refractive index and the embossing process can be met.

[0081] In some embodiments, the material of the adhesive layer 9 is selected from transparent optical adhesive, such as OCA adhesive, which is beneficial to improving the light transmittance of the display module 1 and meeting the refractive index requirements.

[0082] In some embodiments, as Figure 8 and Figure 11 As shown, the adhesive layer 9 covers the multiple protrusion structures 13 and is in direct contact with the side of the anti-glare layer 10 close to the light-emitting layer 2. In other words, the anti-glare layer 10 is directly fixedly connected to the polarizer 3 through the adhesive layer 9, eliminating the need for an additional adhesive layer on the side of the anti-glare layer 10 close to the light-emitting layer. This helps reduce the thickness of the polarizer 3, thereby reducing the thickness of the display module 1.

[0083] In some embodiments, the material of the substrate layer 11 is selected from one or more of polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polycarbonate (PC), triacetyl cellulose (TAC), cycloolefin polymer (COP) and cycloolefin copolymer (COC).

[0084] In some embodiments, the substrate layer 11 can be a single-layer structure or a multi-layer structure. When the substrate layer 11 is a multi-layer structure, any two adjacent layers are connected by an adhesive layer. The present embodiment is described using the substrate layer 11 as a single-layer structure as an example.

[0085] In some embodiments, as Figure 9 As shown, the polarizer 3 further includes a pressure-sensitive adhesive (PSA) layer 15 and a compensation layer 16. The compensation layer 16 is arranged on the side of the pressure-sensitive adhesive layer 15 away from the light-emitting layer 2, the linear polarization layer 12 is arranged on the side of the compensation layer 16 away from the pressure-sensitive adhesive layer 15, and the substrate layer 11 is arranged on the side of the linear polarization layer 12 away from the compensation layer 16.

[0086] In some embodiments, as Figure 8 As shown, the display module 1 also includes an array substrate 14, which includes a substrate layer and a driving circuit layer (not shown in the figure). The light-emitting layer 2 is arranged on the side of the driving circuit layer away from the substrate layer and is electrically connected to the driving circuit layer.

[0087] In some embodiments, the substrate layer may be a flexible substrate or a rigid substrate, which is not limited in this application.

[0088] In some embodiments, the light emitting layer 2 includes a red light emitting device, a green light emitting device, and a blue light emitting device for emitting RGB light, thereby achieving full-color display.

[0089] In some embodiments, the light-emitting device in the light-emitting layer 2 is selected from OLED devices, but is not limited thereto.

[0090] In some embodiments, the display module 1 further includes an encapsulation layer (not shown) located between the light-emitting layer 2 and the polarizer 3 .

[0091] In some embodiments, the encapsulation layer includes, but is not limited to, a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer stacked sequentially in the thickness direction of the display module 1. It is understood that the encapsulation layer can be manufactured using thin film packaging (TFE) technology.

[0092] In some embodiments, the display module 1 further includes a touch layer (not shown) located between the encapsulation layer and the polarizer 3 . The present application does not limit the structure of the touch layer.

[0093] The present application also provides a first comparative display module having only the anti-glare layer described in the above embodiment, Figure 5 The second comparative display module of the structure shown and Figure 8 The experimental display module has the structure shown. The anti-glare layers of the first comparative display module, the second comparative display module, and the experimental display module have the same structure and thickness, for example, all have a cover plate with a textured structure; and the polarizing layers of the first comparative display module and the second comparative display module have the same structure.

[0094] It can be understood that the only difference between the first comparative display module and the second comparative display module is that the first comparative display module does not have an independent light diffusion layer, while the second comparative display module has an independent light diffusion layer, and the other conventional film layer structures of the two are the same; the only difference between the first comparative display module and the experimental display module is that the polarizer in the first comparative display module does not have an integrated protrusion structure, while the polarizer in the experimental display module has an integrated protrusion structure, and the other conventional film layer structures of the two are the same.

[0095] The applicant has measured that, taking the thickness of the first comparative display module as a reference value, the thickness of the second comparative display module is 150 microns greater than that of the first comparative display module. The thickness of the experimental display module is 15 microns greater than that of the first comparative display module.

[0096] The applicant also measured the flash point values ​​of the first comparative display module, the second comparative display module, and the experimental display module when displaying green and white images, respectively. The measurement results are shown in Table 1.

[0097] Table 1

[0098]

[0099] As shown in Table 1, the flash point values ​​of the first comparative display module are greater than 7 for both green and white images, while the flash point values ​​of the second comparative display module are less than 3 for both green and white images. Furthermore, the flash point values ​​of the experimental display module are less than 3.5 for both green and white images. Since higher flash point values ​​indicate more pronounced flash point phenomena, the experimental display module, compared to the first comparative display module, effectively improves the flash point phenomenon by integrating a light-diffusing raised structure on the polarizer. The second comparative display module also effectively improves the flash point phenomenon by providing an independent light-diffusing layer between the polarizing layer and the cover plate.

[0100] Furthermore, Table 1 shows that the flash point values ​​of the experimental display module on a white screen are relatively close to those of the second comparative display module on a white screen, and the flash point values ​​of the experimental display module on a green screen are not much different from those of the second comparative display module on a green screen. Therefore, compared to the first comparative display module, both the experimental and second comparative display modules have effectively reduced flash point values.

[0101] Moreover, when the thickness of the first comparison display module is used as a reference, the increase in the thickness of the experimental display module is much smaller than the increase in the thickness of the second comparison display module, which shows that the display module provided in the embodiment of the present application can effectively improve the flash point phenomenon without significantly increasing the thickness of the display module.

[0102] In the embodiment of the present application, by integrating multiple raised structures 13 with a higher refractive index on the side of the substrate layer 11 of the polarizer 3 facing away from the light-emitting layer 2, and filling the multiple raised structures 13 with a lower refractive index adhesive layer 9, the light emitted by the light-emitting layer 2 can be refracted, reflected, or totally reflected at the interface between the raised structures 13 and the adhesive layer 9 before being emitted to the anti-glare layer 10. This improves the uniformity of light scattering on the surface of the anti-glare layer 10 and avoids the occurrence of localized concentration of light intensity on the surface of the anti-glare layer 10, thereby improving the flash point problem. More importantly, because the raised structures 13 of the present application are integrated on the substrate layer 11 of the polarizer 3 and can be formed through patterned design, compared to the solution of providing an independent light diffusion layer 5 between the polarizer 3 and the anti-glare layer 10, the present application does not require a separately thick light diffusion layer 5, nor does it require an adhesive layer between the raised structures 13 and the substrate layer 11 of the polarizer 3. Therefore, a good anti-flash point effect can be achieved without significantly changing the structure and thickness of the existing display module 1.

[0103] like Figure 12 As shown, the embodiment of the present application further provides a display device 17 , which includes the display module 1 described above.

[0104] In some embodiments, the display device 17 further includes a housing 18 , which is disposed at least at the bottom of the display module 1 .

[0105] In the embodiment of the present application, since a plurality of raised structures 13 for achieving a light diffusion effect are integrated on the polarizer 3 in the display module 1, a good anti-flash point effect can be achieved without significantly changing the structure and thickness of the existing display module 1. Therefore, the display device 17 of the embodiment of the present application can achieve an ultra-thin display and can effectively solve the flash point phenomenon.

[0106] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0107] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0108] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0109] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A display module, characterized in that: include: a luminescent layer; a polarizer located on the light-emitting side of the light-emitting layer; the polarizer includes a substrate layer, and a plurality of protruding structures located on a side of the substrate layer close to the light-emitting layer or on a side of the substrate layer away from the light-emitting layer; as well as A glue layer is filled between any two adjacent protrusion structures; Wherein, the refractive index of the protrusion structure is different from the refractive index of the adhesive layer.

2. The display module according to claim 1, wherein: The structures of any two of the protruding structures are the same; among the multiple protruding structures arranged in the same direction, the distance between any two adjacent protruding structures is equal.

3. The display module according to claim 1, wherein: The plurality of protrusion structures are arranged in multiple rows and columns in a first direction and a second direction, and the first direction and the second direction are arranged crosswise; In the first direction and / or the second direction, edges of the cross sections of the plurality of protrusion structures are in the shape of a sine curve, a cosine curve, or a square wave.

4. The display module according to claim 1, wherein: The plurality of protruding structures are distributed irregularly.

5. The display module according to any one of claims 1 to 4, wherein: The distance between any two adjacent protruding structures is greater than or equal to 3 micrometers and less than or equal to 50 micrometers; the height of the protruding structure in the thickness direction of the substrate layer is greater than 0 and less than or equal to 50 micrometers.

6. The display module according to any one of claims 1 to 4, characterized in that: The difference between the refractive index of the protrusion structure and the adhesive layer is greater than or equal to 0.

03.

7. The display module according to claim 1, wherein: The refractive index of the protrusion structure is greater than the refractive index of the adhesive layer.

8. The display module according to claim 7, wherein: The material of the protruding structure is selected from at least one of polyurethane, acrylate and epoxy resin.

9. The display module according to claim 7, wherein: The material of the adhesive layer is selected from transparent optical adhesive.

10. The display module according to any one of claims 1 to 4, characterized in that: The polarizer further includes a linear polarization layer located on a side of the substrate layer close to the light-emitting layer, and the protruding structure is located on a side of the linear polarization layer away from the light-emitting layer.

11. The display module according to any one of claims 1 to 4, characterized in that: The polarizer further includes a linear polarization layer located on a side of the substrate layer close to the light-emitting layer, and the protruding structure is located on a side of the linear polarization layer close to the light-emitting layer.

12. The display module according to any one of claims 1 to 4, characterized in that: The protruding structure is in direct contact with the substrate layer.

13. The display module according to any one of claims 1 to 4, characterized in that: The display module further includes an anti-glare layer, which is located on a side of the polarizer away from the light-emitting layer.

14. The display module according to claim 13, wherein: The protruding structure is located on a side of the substrate layer away from the light-emitting layer. The adhesive layer covers the substrate layer and the protruding structure and is in direct contact with a side of the anti-glare layer close to the light-emitting layer.

15. A display device, characterized in that: A display module comprising any one of claims 1-14.

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