Display module and display equipment

Abstract

The embodiment of the invention discloses a display module and a display device, the display module comprises a display panel, a diffusion layer and a cover plate, the diffusion layer is arranged on the light emitting side of the display panel, and the diffusion layer is configured to diffuse emergent light of the display panel. The cover plate is arranged on the side, away from the display panel, of the diffusion layer, and the surface, away from the display panel, of the cover plate is a textured surface. When emergent light of the display panel passes through the diffusion layer, the emergent light is dispersed by the diffusion layer, and the dispersed light is relatively uniform when radiated to the textured surface of the cover plate, so that the non-uniform scattering degree is reduced, and the effect of improving a flash point is achieved.

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 caused by specular reflection on the module cover surface, which greatly reduces screen visibility and has long-term effects on eye health. In order to suppress glare, the surface of the cover is usually textured.

[0003] However, the inventors of the present application have discovered that the use of a textured cover plate in a display module may result in a flash point problem. Flash points are a phenomenon in which unevenly distributed colored dots are observed by the human eye on a display screen.

[0004] The reason is that the texturing treatment causes irregular undulations on the surface of the cover plate. The light emitted by the pixels is unevenly scattered on the textured surface, and the light intensity and chromaticity are unevenly distributed, so users see flash spots when viewing the screen. Summary of the invention

[0005] The embodiments of the present application provide a display module and a display device, which can improve the flash point.

[0006] The present application provides a display module, which includes:

[0007] Display panel;

[0008] A diffusion layer, disposed on a light-emitting side of the display panel, the diffusion layer being configured to diffuse the emitted light of the display panel;

[0009] The cover plate is arranged on a side of the diffusion layer away from the display panel, and a surface of the cover plate away from the display panel is a textured surface.

[0010] Optionally, in some embodiments of the present application, the diffusion layer includes a light-transmitting layer and a plurality of feature bodies disposed in the light-transmitting layer;

[0011] Wherein, the characteristic body is a scattering particle, and / or the refractive index of the characteristic body is greater than the refractive index of the light-transmitting layer.

[0012] Optionally, in some embodiments of the present application, the full-angle light transmittance of the diffusion layer is greater than or equal to 85%.

[0013] Optionally, in some embodiments of the present application, the light intensity of the linearly propagating non-diffused point light source passing through the diffusion layer at a maximum diffusion angle is I(max°), and the light intensity of the linearly propagating non-diffused point light source passing through the diffusion layer at an angle of 0 degrees is I(0°);

[0014] Among them, I(max°) / I(0°)≥0.5.

[0015] Optionally, in some embodiments of the present application, the maximum diffusion angle of the linearly propagating non-diffused point light source passing through the diffusion layer is between 4 degrees and 16 degrees.

[0016] Optionally, in some embodiments of the present application, the diffusion layer is an optical adhesive layer, and the diffusion layer connects the display panel and the cover plate.

[0017] Optionally, in some embodiments of the present application, the display module further includes at least three light-transmitting functional layers located between the cover plate and the display panel, and at least one of the three light-transmitting functional layers is reused as the diffusion layer.

[0018] Optionally, in some embodiments of the present application, the diffusion layer is multiplexed into at least one of an ultraviolet light blocking layer and a blue light absorbing layer.

[0019] Optionally, in some embodiments of the present application, the diffusion layer is reused as an ultraviolet light blocking layer, the feature body includes a core and a shell wrapping the core, and the material of the core includes ultraviolet shielding material.

[0020] Optionally, in some embodiments of the present application, the diffusion layer is also reused as a blue light absorption layer, the characteristic body includes a core and a shell encapsulating the core, the shell includes an inorganic blue light absorption material, and the material of the core includes the ultraviolet shielding material.

[0021] Optionally, in some embodiments of the present application, the at least three light-transmitting functional layers include a first optical adhesive layer, a protective layer, and a second optical adhesive layer, wherein the first optical adhesive layer is disposed between the protective layer and the display panel, and the second optical adhesive layer is disposed between the protective layer and the cover plate;

[0022] One of the first optical adhesive layer, the protection layer, and the second optical adhesive layer is multiplexed as the diffusion layer.

[0023] Optionally, in some embodiments of the present application, at least one of the first optical adhesive layer, the protective layer and the second optical adhesive layer is reused as an ultraviolet light blocking layer, and an ultraviolet light shielding material is disposed in the ultraviolet light blocking layer.

[0024] Optionally, in some embodiments of the present application, the ultraviolet light blocking layer has a set 380 nm light transmittance Tr, Tr≤10%.

[0025] Optionally, in some embodiments of the present application, the display panel includes an electroluminescent substrate and a color filter layer, the color filter layer is arranged on the light output side of the electroluminescent substrate, and the first optical adhesive layer is arranged between the protective layer and the color filter layer.

[0026] Optionally, in some embodiments of the present application, the electroluminescent substrate includes a red sub-pixel, a green sub-pixel and a blue sub-pixel, and the area of ​​the blue sub-pixel is larger than the area of ​​the red sub-pixel and the area of ​​the green sub-pixel;

[0027] At least one of the first optical adhesive layer, the protective layer and the second optical adhesive layer is multiplexed into a blue light absorbing layer, and the blue light absorbing layer is doped with a blue light absorbing material.

[0028] Optionally, in some embodiments of the present application, the blue light absorbing layer has a transmittance yellow value YI, YI≥2.

[0029] Correspondingly, an embodiment of the present application further provides a display device, comprising a display module as described in any one of the above embodiments.

[0030] The display module and display device of the embodiment of the present application include a display panel, a diffusion layer and a cover plate, wherein the diffusion layer is arranged on the light-emitting side of the display panel, and the diffusion layer is configured to diffuse the emitted light of the display panel. The cover plate is arranged on the side of the diffusion layer away from the display panel, and the surface of the cover plate away from the display panel is a textured surface.

[0031] It should be noted that when the outgoing light of the display panel passes through the diffusion layer, the outgoing light is dispersed by the diffusion layer, and the dispersed light is radiated relatively evenly to the textured surface of the cover plate, thereby reducing the degree of uneven scattering to achieve the effect of improving the flash point. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic diagram of the structure of a display module provided in an embodiment of the present application;

[0033] Figure 2 is a schematic diagram of the structure of a diffusion layer in a display module provided in an embodiment of the present application;

[0034] Figure 3 is a light intensity ratio curve diagram of a non-diffused point light source propagating in a straight line through the diffusion layer of the present application when the maximum diffusion angle is 5 degrees;

[0035] Figure 4 is a schematic structural diagram of a characteristic body of a diffusion layer in a display module provided in an embodiment of the present application;

[0036] Figure 5is another structural schematic diagram of a display module provided in an embodiment of the present application;

[0037] Figure 6 It is a schematic diagram of the structure of the display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] 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 described embodiments 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. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, the various embodiments can be combined with each other but will not be repeated one by one, and in the absence of contrary instructions, the directional words used, such as "upper" and "lower", usually refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the drawings; while "inside" and "outside" refer to the outline of the device; the terms "first", "second", "third", etc. are used only as markings, and no numerical requirements are imposed or order is established.

[0039] The embodiments of the present application provide a display module and a display device, which are described in detail below. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.

[0040] Please refer to Figure 1 An embodiment of the present application provides a display module 100 , which includes a display panel 11 , a diffusion layer 12 and a cover plate 13 .

[0041] The diffusion layer 12 is disposed on the light-emitting side of the display panel 11, and is configured to diffuse the emitted light of the display panel 11. The cover plate 13 is disposed on a side of the diffusion layer 12 away from the display panel 11. The surface of the cover plate 13 away from the display panel 11 is a textured surface.

[0042] It should be noted that when the outgoing light of the display panel 11 passes through the diffusion layer 12, the outgoing light is dispersed by the diffusion layer 12, and the dispersed light is radiated relatively uniformly to the textured surface of the cover plate 13, thereby reducing the degree of uneven scattering to achieve the effect of improving the flash point.

[0043] It should be understood that a textured cover plate refers to a texture treatment on the surface of the cover plate, which can be a mechanical, chemical or physical method to form patterns, lines or textures on the surface of the cover plate to increase wear resistance and anti-fingerprint performance.

[0044] Optionally, the textured surface of the cover plate 13 is a rough surface, and the root mean square roughness of the textured surface is between 0.1 micrometers and 0.5 micrometers, for example, it can be 0.1 micrometers, 0.2 micrometers, 0.3 micrometers, 0.4 micrometers or 0.5 micrometers. It can be understood that the greater the root mean square roughness of the textured surface, the stronger the degree of irregular scattering, so the root mean square roughness of the textured surface is set below 0.5 micrometers to reduce the degree of irregular scattering of the textured surface, thereby improving the problem of flash point.

[0045] Optionally, the display panel 11 may be an organic light emitting diode panel, a quantum dot light emitting diode panel, a micro light emitting diode panel, a sub-millimeter light emitting panel, a liquid crystal display panel or an electrophoretic display panel, etc. The following description takes the display panel 11 as an organic light emitting diode panel as an example.

[0046] Optionally, in some embodiments of the present application, please refer to Figure 2 , Figure 2 The structural schematic diagram of the diffusion layer 12 of the display module 100 according to the embodiment of the present application is shown. The diffusion layer 12 includes a light-transmitting layer 121 and a plurality of feature bodies 122 disposed in the light-transmitting layer 121 .

[0047] In some embodiments, the feature 122 is a scattering particle. Optionally, the material of the feature 122 can be one or more of titanium dioxide, silicon dioxide, polystyrene and acrylic resin.

[0048] Optionally, the light-transmitting layer 121 can be a photocurable material, a thermosetting material or other material with a light-transmitting property, such as polymethyl methacrylate (PMMA), polycarbonate (PC), polystyrene (PS), styrene-methyl methacrylate copolymer (MS), polyethylene terephthalate (PET), acrylic epoxy resin, epoxy resin, polyurethane acrylate resin, polyester acrylate, epoxy acrylate, modified epoxy acrylate or aliphatic polyurethane hexaacrylate, etc.

[0049] Optionally, in some embodiments, the refractive index of the scattering particles is greater than the refractive index of the light-transmitting layer 121. It can be understood that the refractive index of the scattering particles is greater than the refractive index of the light-transmitting layer 121, so that the contact interface between the scattering particles and the light-transmitting layer 121 forms a total reflection interface to improve the scattering effect of the diffusion layer 12.

[0050] Optionally, in some embodiments, the refractive index of the feature body 122 is greater than the refractive index of the light-transmitting layer 121. In other words, the scattering particles are replaced by the feature body 122 with a high refractive index. It can be understood that the contact interface between the feature body with a high refractive index and the light-transmitting layer 121 with a low refractive index is a total reflection interface, so when light is radiated to the total reflection interface, the light with an incident angle greater than a certain angle is totally reflected at the total reflection interface, and the propagation direction of the light is greatly changed to achieve the effect of diffused and uniform light.

[0051] Optionally, both the feature body 122 and the light-transmitting layer 121 may be photocurable materials, and the photocurable wavelength band for forming the feature body 122 is different from the photocurable wavelength band for forming the light-transmitting layer 121. In the process of preparing the diffusion layer 12, the high refractive index material and the low refractive index material are first mixed, and then the high refractive index material is cured by the first light wavelength band to form the feature body 122, and then the low refractive index material is cured by the second light wavelength band to form the light-transmitting layer 121. Of course, two light wavelength bands may also be used to cure the low refractive index material and the high refractive index material at the same time.

[0052] Alternatively, a pre-cured high refractive index material and an uncured low refractive index material may be mixed to control the distribution of the high refractive index material, and then the two are cured to form the feature body 122 and the light-transmitting layer 121. Of course, two light bands may also be used to cure the low refractive index material and the high refractive index material at the same time.

[0053] It can be understood that the integral connection between the feature body 122 and the light-transmitting layer 121 improves the stability of the diffusion layer 12 .

[0054] Optionally, in some embodiments of the present application, the full-angle transmittance of the diffusion layer 12 is greater than or equal to 85% to ensure the light output brightness of the display module 100 .

[0055] Optionally, in some embodiments of the present application, the light intensity of the linearly propagating non-diffuse point light source passing through the diffusion layer 12 at the maximum diffusion angle is I (max°), and the light intensity of the linearly propagating non-diffuse point light source passing through the diffusion layer 12 at an angle of 0 degrees is I (0°).

[0056] Among them, I(max°) / I(0°)≥0.5.

[0057] It can be understood that the maximum diffusion angle is a unilateral diffusion angle. For example, taking the maximum diffusion angle of 5 degrees as an example, it can be expanded to 5 degrees to the left and right at the same time in the horizontal viewing angle direction, that is, the total viewing angle is 10 degrees.

[0058] Secondly, the greater the light intensity ratio of I(max°) / I(0°), the more uniform the light intensity distribution of the diffused light. Therefore, I(max°) / I(0°)≥0.5 to avoid too low light intensity at large angles and reduce the degree of uneven scattering.

[0059] Optionally, in some embodiments of the present application, the maximum diffusion angle of the linearly propagating non-diffused point light source through the diffusion layer 12 is between 4 degrees and 16 degrees, for example, it can be 4 degrees, 5 degrees, 6 degrees, 7 degrees, 8 degrees, 9 degrees, 10 degrees, 11 degrees, 12 degrees, 13 degrees, 14 degrees, 15 degrees or 16 degrees.

[0060] It can be understood that the larger the diffusion angle of the diffusion layer 12, the higher the required proportion of the characteristic body 122, the greater the haze of the diffusion layer 12, and the greater the impact on the light intensity of the 0-degree angle light. Therefore, in order to take into account the brightness of the light output at the positive viewing angle and the uniformity of the light intensity after diffusion, the maximum diffusion angle of the diffusion layer 12 is set between 4 degrees and 16 degrees.

[0061] Optionally, based on the high-resolution architecture of the display module 100 , the maximum diffusion angle of the linearly propagating non-diffused point light source through the diffusion layer 12 is between 4 degrees and 6 degrees, so as to take into account both display clarity and uniformity of light intensity after diffusion.

[0062] Please refer to Figure 3 , Figure 3 It is a light intensity ratio curve diagram when the maximum diffusion angle of the straight-line non-diffused point light source passing through the diffusion layer 12 is 5 degrees. Figure 3 It can be seen that when the light angle is 5 degrees, the light intensity ratio I(5°) / I(0°) is the smallest, and when the light angle is 0 degrees, the light intensity ratio I(0°) / I(0°) is the largest.

[0063] Optionally, in some embodiments, the display module 100 further includes at least three light-transmitting functional layers between the cover plate 13 and the display panel 11 , and at least one of the three light-transmitting functional layers is reused as the diffusion layer 12 .

[0064] It is understandable that the light-transmitting functional layer is reused as the diffusion layer 12 , and there is no need to additionally provide the diffusion layer 12 , thereby achieving the effect of thinning the display module 100 .

[0065] In addition, optionally, the light-transmitting functional layer may be at least one of an optical adhesive layer, a protective layer, an anti-reflection film, an anti-reflection film, and an insulating layer of a touch device film, but is not limited thereto.

[0066] Optionally, in some embodiments of the present application, one of at least three light-transmitting functional layers is reused as at least one of an ultraviolet light blocking layer and a blue light absorbing layer and a diffusion layer 12; that is, the diffusion layer 12 is reused as at least one of an ultraviolet light blocking layer and a blue light absorbing layer. In response to different functional requirements, the light-transmitting functional layer has different diffusion layer 12 structures, which will be described in detail below.

[0067] Optional, see Figure 4 In some embodiments of the present application, the diffusion layer 12 is reused as an ultraviolet light blocking layer, and the feature body 122 includes a core 12a and a shell 12b encapsulating the core 12a, and the material of the core 12a includes an ultraviolet light shielding material.

[0068] It should be noted that, in some embodiments, the feature body 122 has a double-layer light-transmitting structure, so that the feature body 122 has a double scattering effect, which improves the diffusion effect, and the ultraviolet light shielding material of the core 12a can achieve the function of blocking ultraviolet light. Therefore, the diffusion layer 12 not only achieves the function of blocking ultraviolet light, but also further improves the light diffusion performance.

[0069] Secondly, in some embodiments, based on the fact that the refractive index of the core 12a is greater than the refractive index of the shell 12b, the refractive index of the shell 12b is greater than the refractive index of the light-transmitting layer 121, and the feature body 122 has a double-layer light-transmitting structure, the feature body 122 has a double total reflection effect, which improves the diffusion effect, and the ultraviolet light shielding material of the core 12a can achieve the function of blocking ultraviolet light. Therefore, the diffusion layer 12 not only achieves the function of blocking ultraviolet light, but also further improves the light diffusion performance.

[0070] Optionally, in some embodiments of the present application, the diffusion layer 12 is also reused as a blue light absorption layer, and the feature body 122 includes a core 12a and a shell 12b wrapping the core 12a, the shell 12b includes a blue light absorption material, and the material of the core 12a includes an ultraviolet shielding material.

[0071] It should be noted that, in some embodiments, the characteristic body 122 has a double-layer light-transmitting structure formed by the shell 12b and the core 12a, so that the characteristic body 122 has a double scattering effect, which improves the diffusion effect, and the blue light absorbing material of the shell 12b can realize the function of absorbing blue light, and the ultraviolet light shielding material of the core 12a can realize the function of blocking ultraviolet light. Therefore, the diffusion layer 12 not only realizes the function of blocking ultraviolet light and absorbing blue light, but also further improves the light diffusion performance.

[0072] Secondly, in some embodiments, based on the fact that the refractive index of the core 12a is greater than the refractive index of the shell 12b, the refractive index of the shell 12b is greater than the refractive index of the light-transmitting layer 121, and the feature body 122 has a double-layer light-transmitting structure formed by the shell 12b and the core 12a, the feature body 122 has a double total reflection effect, which improves the diffusion effect, and the blue light absorbing material of the shell 12b can achieve the function of absorbing blue light, and the ultraviolet light shielding material of the core 12a can achieve the function of blocking ultraviolet light. Therefore, the diffusion layer 12 not only achieves the function of blocking ultraviolet light, but also further improves the light diffusion performance.

[0073] Optionally, in some embodiments of the present application, at least three layers of the light-transmitting functional layer include a first optical adhesive layer 10a, a protective layer 10c, and a second optical adhesive layer 10b. The first optical adhesive layer 10a is disposed between the protective layer 10c and the display panel 11, and the second optical adhesive layer 10b is disposed between the protective layer 10c and the cover plate 13.

[0074] One of the first optical adhesive layer 10 a , the protective layer 10 c , and the second optical adhesive layer 10 b is multiplexed as the diffusion layer 12 .

[0075] It should be noted that one of the first optical adhesive layer 10a, the protective layer 10c and the second optical adhesive layer 10b is reused as the diffusion layer 12. That is, the first optical adhesive layer 10a can be the diffusion layer 12; or the protective layer 10c can be the diffusion layer 12. Figure 1 or the second optical adhesive layer 10b is a diffusion layer 12.

[0076] In some embodiments, the first optical adhesive layer 10a or the second optical adhesive layer 10b is a diffusion layer 12, and the first optical adhesive layer 10a or the second optical adhesive layer 10b is a composite adhesive layer, wherein the colloid of the first optical adhesive layer 10a or the second optical adhesive layer 10b is a light-transmitting layer 121, and the feature body 122 is mixed in the colloid.

[0077] In some embodiments, the protective layer 10c is a diffusion layer 12 and is a composite film layer, and has light diffusion function, good wear resistance and impact resistance.

[0078] It can be understood that, since the protective layer 10c is formed as a separate film, the protective layer 10c is reused as the diffusion layer 12, so that the diffusion degree of the diffusion layer 12 can be better controlled; in addition, since the hardness of the characteristic body 122 is greater than the hardness of the light-transmitting layer 121, the addition of the characteristic body 122 can increase the hardness of the film layer, thereby improving the wear resistance and impact resistance.

[0079] Optionally, in some embodiments of the present application, at least one of the first optical adhesive layer 10a, the protective layer 10c and the second optical adhesive layer 10b is reused as an ultraviolet light blocking layer, and an ultraviolet light shielding material is disposed in the ultraviolet light blocking layer.

[0080] It is understandable that the UV blocking layer can block UV light to reduce the risk of degradation of the display module 100 .

[0081] Optionally, the ultraviolet shielding material includes an organic ultraviolet absorber, a nano inorganic ultraviolet reflector, or a combination of the two. The organic ultraviolet absorber can be selected from phenyl salicylate, ultraviolet absorber UV-O, ultraviolet absorber UV-P, ultraviolet absorber UV-9, ultraviolet absorber UV-321, ultraviolet absorber UV-531, ultraviolet absorber RMB, and photochromic MC powder; the nano inorganic ultraviolet reflector can be selected from nano silicon dioxide, nano titanium dioxide, nano zinc oxide, pearl powder, talcum powder, and magnesium oxide.

[0082] It can be understood that, based on the fact that one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is multiplexed as the diffusion layer 12, and at least one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is multiplexed as the ultraviolet light blocking layer, in some embodiments, one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b may combine the light diffusion function and the ultraviolet light blocking function. For example, the protective layer 10c may be multiplexed as the diffusion layer 12 and the ultraviolet light blocking layer at the same time. However, it is not limited thereto, for example, the first optical adhesive layer 10a or the second optical adhesive layer 10b may be multiplexed as the diffusion layer 12 and the ultraviolet light blocking layer at the same time.

[0083] Taking the protective layer 10c being reused as the diffusion layer 12 and the ultraviolet light blocking layer as an example, it can also be said that the diffusion layer 12 is integrated with the protective function and the ultraviolet light blocking function. Figure 4 As shown, the characteristic body 122 includes a core 12a and a shell 12b encapsulating the core 12a. The material of the core 12a includes the ultraviolet shielding material.

[0084] It should be noted that, in some embodiments, the feature body 122 has a double-layer light-transmitting structure, so that the feature body 122 has a double scattering effect, which improves the diffusion effect, and the ultraviolet light shielding material of the core 12a can achieve the function of blocking ultraviolet light. Therefore, the protective layer 10c not only achieves the function of blocking ultraviolet light, but also further improves the light diffusion performance.

[0085] Secondly, in some embodiments, based on the fact that the refractive index of the core 12a is greater than the refractive index of the shell 12b, the refractive index of the shell 12b is greater than the refractive index of the light-transmitting layer 121, and the feature body 122 has a double-layer light-transmitting structure, the feature body 122 has a double total reflection effect, which improves the diffusion effect, and the ultraviolet light shielding material of the core 12a can achieve the function of blocking ultraviolet light. Therefore, the protective layer 10c not only achieves the function of blocking ultraviolet light, but also further improves the light diffusion performance.

[0086] In addition, based on the fact that one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is reused as the diffusion layer 12, and at least one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is reused as the ultraviolet light blocking layer, therefore, in some embodiments, one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is reused as the diffusion layer 12, the other is reused as the ultraviolet light blocking layer, and the remaining one maintains the original functional requirements. However, it is not limited to this, for example, one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b may be reused as the diffusion layer 12, and the other two may be reused as the ultraviolet light blocking layer; or one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b may be reused as the diffusion layer 12, and all three may be reused as the ultraviolet light blocking layer.

[0087] Optionally, in some embodiments of the present application, the ultraviolet light blocking layer has a set 380 nm light transmittance Tr, Tr≤10%, so as to reduce the risk of degradation of the display module 100 .

[0088] Optionally, in some embodiments of the present application, the display panel 11 includes an electroluminescent substrate 111 and a color filter layer 112 , the color filter layer 112 is arranged on the light emitting side of the electroluminescent substrate 111 , and the first optical adhesive layer 10a is arranged between the protective layer 10c and the color filter layer 112 .

[0089] The electroluminescent substrate 111 includes a red sub-pixel 11r, a green sub-pixel 11g, and a blue sub-pixel 11b, and the area of ​​the blue sub-pixel 11b is larger than the areas of the red sub-pixel 11r and the green sub-pixel 11g.

[0090] At least one of the first optical adhesive layer 10a, the protective layer 10c and the second optical adhesive layer 10b is multiplexed into a blue light absorbing layer, and the blue light absorbing layer is doped with a blue light absorbing material.

[0091] It is understandable that the light transmittance is improved by using the color filter layer 112 to replace the polarizer, and the blue sub-pixel 11b has a larger area, so that the blue sub-pixel 11b has a higher reflectivity to external light, which leads to the problem that the display module has a blue reflected hue. Therefore, the display module 100 of the embodiment of the present application uses the blue light absorption layer to absorb blue light to reduce the risk of the display module 100 being blue.

[0092] Optionally, the blue light absorbing material includes one or a combination of metal complex dyes, yellow phosphors, and inorganic materials. The inorganic material includes at least one of metaaluminate and metastannate.

[0093] Optionally, in some embodiments of the present application, the blue light absorbing layer has a transmittance yellow value YI, YI ≥ 2, so as to reduce the risk of the display module 100 being blue.

[0094] It can be understood that, based on the fact that one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is multiplexed as the diffusion layer 12, and at least one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is multiplexed as the blue light absorption layer, therefore, in some embodiments, one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b may combine the light diffusion function and the blue light absorption function. For example, the protective layer 10c may be multiplexed as the diffusion layer 12 and the blue light absorption layer at the same time. However, it is not limited thereto, for example, the first optical adhesive layer 10a or the second optical adhesive layer 10b may be multiplexed as the diffusion layer 12 and the blue light absorption layer at the same time.

[0095] Taking the protection layer 10c as the diffusion layer 12 and the blue light absorption layer as an example, it can also be said that the diffusion layer 12 integrates the protection function and the blue light absorption function. Figure 4 As shown, the feature body 122 includes a core 12a and a shell 12b encapsulating the core 12a. The material of the core 12a includes the blue light absorbing material.

[0096] In some embodiments, the blue light absorbing material is selected from inorganic materials, such as metaaluminate, metastannate, etc. Based on this, the feature 122 can be a nanoparticle formed of a blue light absorbing material to simultaneously achieve the light diffusion function and the blue light absorption function.

[0097] In addition, based on the fact that one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is multiplexed as the diffusion layer 12, and at least one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is multiplexed as the blue light absorption layer, therefore, in some embodiments, one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is multiplexed as the diffusion layer 12, the other is multiplexed as the blue light absorption layer, and the remaining one maintains the original functional requirements. However, it is not limited to this, for example, one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b may be multiplexed as the diffusion layer 12, and the other two may be multiplexed as the blue light absorption layer; or one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b may be multiplexed as the diffusion layer 12, and all three may be multiplexed as the blue light absorption layer.

[0098] In some embodiments, based on the fact that one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is multiplexed as the diffusion layer 12, at least one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is multiplexed as the ultraviolet light blocking layer, and at least one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is multiplexed as the blue light absorption layer; therefore, in some embodiments, one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b may combine the light diffusion function, the ultraviolet light blocking function, and the blue light absorption function. For example, the protective layer 10c may be multiplexed as the diffusion layer 12, the ultraviolet light blocking layer, and the blue light absorption layer at the same time. However, it is not limited to this. For example, the first optical adhesive layer 10a or the second optical adhesive layer 10b may be multiplexed as the diffusion layer 12, the ultraviolet light blocking layer, and the blue light absorption layer at the same time.

[0099] Taking the protective layer 10c being reused as the diffusion layer 12, the ultraviolet light blocking layer and the blue light absorbing layer as an example, it can also be said that the diffusion layer 12 is integrated with the protective function, the ultraviolet light blocking function and the blue light absorbing function. Figure 4 As shown, the feature body 122 includes a core 12a and a shell 12b encapsulating the core 12a. The shell 12b includes the inorganic blue light absorbing material, and the material of the core 12a includes the ultraviolet light shielding material. For example, the material of the shell 12b includes at least one of aluminate and stannate.

[0100] It should be noted that, in some embodiments, the characteristic body 122 has a double-layer light-transmitting structure formed by the shell 12b and the core 12a, so that the characteristic body 122 has a double scattering effect, which improves the diffusion effect, and the blue light absorbing material of the shell 12b can realize the function of absorbing blue light, and the ultraviolet light shielding material of the core 12a can realize the function of blocking ultraviolet light. Therefore, the protective layer 10c not only realizes the function of blocking ultraviolet light and absorbing blue light, but also further improves the light diffusion performance.

[0101] Secondly, in some embodiments, based on the fact that the refractive index of the core 12a is greater than the refractive index of the shell 12b, the refractive index of the shell 12b is greater than the refractive index of the light-transmitting layer 121, and the feature body 122 has a double-layer light-transmitting structure formed by the shell 12b and the core 12a, the feature body 122 has a double total reflection effect, which improves the diffusion effect, and the blue light absorbing material of the shell 12b can achieve the function of absorbing blue light, and the ultraviolet light shielding material of the core 12a can achieve the function of blocking ultraviolet light. Therefore, the protective layer 10c not only achieves the function of blocking ultraviolet light, but also further improves the light diffusion performance.

[0102] Optionally, in some embodiments, based on the fact that one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is multiplexed as the diffusion layer 12, at least one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is multiplexed as the ultraviolet light blocking layer, and at least one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is multiplexed as the blue light absorbing layer; it may be that one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is multiplexed as the diffusion layer 12, and the other is multiplexed as the ultraviolet light blocking layer. layer, and the remaining one is multiplexed as a blue light absorbing layer; or, one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is multiplexed as the diffusion layer 12, the other is multiplexed as an ultraviolet light blocking layer and a blue light absorbing layer, and the remaining one is multiplexed as an ultraviolet light blocking layer or a blue light absorbing layer; or, one of the first optical adhesive layer 10a, the protective layer 10c, and the second optical adhesive layer 10b is multiplexed as one of the ultraviolet light blocking layer and the blue light absorbing layer and the diffusion layer 12, and the remaining two are multiplexed as the ultraviolet light blocking layer and the blue light absorbing layer, and so on.

[0103] Figure 5 FIG. 1 is another schematic diagram of the structure of the display module 100 according to an embodiment of the present application. Figure 6 In the present invention, parts that are different from those of the above-mentioned embodiments will be described to avoid redundancy.

[0104] Please refer to Figure 5 In some embodiments of the present application, the diffusion layer 12 is an optical adhesive layer, and the diffusion layer 12 connects the display panel 11 and the cover plate 13 .

[0105] The diffusion layer 12 has the bonding function of an optical adhesive layer and at least one of the functions of an ultraviolet light blocking layer and a blue light absorbing layer.

[0106] It should be noted that the structure of the diffusion layer 12 is similar or identical to the structure of the diffusion layer 12 of the display module 100 of the above-mentioned embodiments. Figure 2 and Figure 4 The relevant explanation will not be repeated here.

[0107] Please refer to Figure 6 , Figure 6 The structure diagram of the display device 1000 according to the embodiment of the present application is shown. The embodiment of the present application also provides a display device 1000, comprising the display module 100 according to any one of the above embodiments.

[0108] It should be noted that the structure of the display module 100 of the display device 1000 of the embodiment of the present application is similar or identical to the structure of the display module 100 of any of the above embodiments. Figures 1 to 5 The relevant explanation will not be repeated here.

[0109] The display device 1000 of the embodiment of the present application includes a display panel 11, a diffusion layer 12 and a cover plate 13. The diffusion layer 12 is arranged on the light-emitting side of the display panel 11, and the diffusion layer 12 is configured to diffuse the emitted light of the display panel 11. The cover plate 13 is arranged on a side of the diffusion layer 12 away from the display panel 11, and the surface of the cover plate 13 away from the display panel 11 is a textured surface.

[0110] It should be noted that when the outgoing light of the display panel 11 passes through the diffusion layer 12, the outgoing light is dispersed by the diffusion layer 12, and the dispersed light is radiated relatively uniformly to the textured surface of the cover plate, thereby reducing the degree of uneven scattering to achieve the effect of improving the flash point.

[0111] Optionally, the display device 1000 is a case of a smart phone, but the display device 1000 according to the present disclosure is not limited thereto. The display device 1000 can be applied to and used in various products including, for example, televisions, notebook computers, monitors, billboards, Internet of Things (IoT) devices, and portable electronic devices including mobile phones, smart phones, tablet personal computers, mobile communication terminals, electronic organizers, electronic books, portable multimedia players (PMPs), navigation, and ultra mobile personal computers (UMPCs).

[0112] In addition, the display device 1000 according to some embodiments may be applied to a wearable device and may be used in a wearable device, including a smart watch, a watch phone, a glasses-type display, and a head-mounted display (HMD). In addition, according to some embodiments, the display device 1000 may be applied to an instrument panel for a car, a display screen in a central dashboard or a central information display (CID) arranged on a dashboard for a car, an interior mirror display replacing a side mirror of a car, and a display of an entertainment system arranged on the back of a front seat for rear seat passengers in a car.

[0113] The above is a detailed introduction to a display module and a display device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A display module, characterized in that: include: Display panel; A diffusion layer, disposed on a light-emitting side of the display panel, the diffusion layer being configured to diffuse the emitted light of the display panel; The cover plate is arranged on a side of the diffusion layer away from the display panel, and a surface of the cover plate away from the display panel is a textured surface.

2. The display module according to claim 1, characterized in that: The diffusion layer includes a light-transmitting layer and a plurality of feature bodies disposed in the light-transmitting layer; Wherein, the characteristic body is a scattering particle, and / or the refractive index of the characteristic body is greater than the refractive index of the light-transmitting layer.

3. The display module according to claim 2, characterized in that: The full-angle light transmittance of the diffusion layer is greater than or equal to 85%.

4. The display module according to claim 3, characterized in that: The light intensity of the non-diffused point light source propagating in a straight line through the diffusion layer at the maximum diffusion angle is I(max°), and the light intensity of the non-diffused point light source propagating in a straight line through the diffusion layer at an angle of 0 degrees is I(0°); Among them, I(max°) / I(0°)≥0.

5.

5. The display module according to claim 4, characterized in that: The maximum diffusion angle of the straight-line non-diffused point light source passing through the diffusion layer is between 4 degrees and 16 degrees.

6. The display module according to any one of claims 1 to 5, characterized in that: The diffusion layer is an optical adhesive layer, and the diffusion layer connects the display panel and the cover plate.

7. The display module according to any one of claims 2 to 5, characterized in that: The display module further includes at least three light-transmitting functional layers located between the cover plate and the display panel, and one of the at least three light-transmitting functional layers is reused as the diffusion layer.

8. The display module according to claim 7, characterized in that: The diffusion layer is multiplexed as at least one of an ultraviolet light blocking layer and a blue light absorbing layer.

9. The display module according to claim 8, characterized in that: The diffusion layer is reused as an ultraviolet light blocking layer, the feature body comprises an inner core and a shell encapsulating the inner core, and the material of the inner core comprises an ultraviolet light shielding material.

10. The display module according to claim 9, characterized in that: The diffusion layer is also reused as a blue light absorption layer. The feature body includes a core and a shell that wraps the core. The shell includes a blue light absorption material, and the material of the core includes an ultraviolet shielding material.

11. The display module according to claim 7, characterized in that: The at least three light-transmitting functional layers include a first optical adhesive layer, a protective layer, and a second optical adhesive layer, wherein the first optical adhesive layer is disposed between the protective layer and the display panel, and the second optical adhesive layer is disposed between the protective layer and the cover plate; One of the first optical adhesive layer, the protection layer, and the second optical adhesive layer is multiplexed as the diffusion layer.

12. The display module according to claim 11, characterized in that: At least one of the first optical adhesive layer, the protective layer and the second optical adhesive layer is reused as an ultraviolet light blocking layer, and an ultraviolet light shielding material is disposed in the ultraviolet light blocking layer.

13. The display module according to claim 12, characterized in that: The ultraviolet light blocking layer has a set 380 nanometer light transmittance Tr, Tr≤10%.

14. The display module according to claim 11, characterized in that: The display panel comprises an electroluminescent substrate and a color filter film layer, wherein the color filter film layer is arranged on the light emitting side of the electroluminescent substrate, and the first optical adhesive layer is arranged between the protective layer and the color filter film layer.

15. The display module according to claim 14, characterized in that: The electroluminescent substrate comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel, and the area of ​​the blue sub-pixel is larger than the area of ​​the red sub-pixel and the area of ​​the green sub-pixel; At least one of the first optical adhesive layer, the protective layer and the second optical adhesive layer is multiplexed into a blue light absorbing layer, and the blue light absorbing layer is doped with a blue light absorbing material.

16. The display module according to claim 15, characterized in that: The blue light absorbing layer has a transmittance yellow value YI, where YI≥2.

17. A display device, characterized in that: Comprising a display module as described in any one of claims 1-16.

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