Display module and display device

Abstract

The present application relates to the technical field of display. Provided are a display module and a display device. The display module comprises: a display panel; and a functional layer, which is arranged on a display side of the display panel, wherein a plurality of microstructures are provided on the side surface of the functional layer facing away from the display panel, and the plurality of microstructures are arranged in a plurality of target regions arranged in an array, or each microstructure is offset in a random direction relative to a target region corresponding to the microstructure.

Description

Display module and display device

[0001] The present disclosure claims priority to the Chinese patent application No. 2024108763546, filed on July 1, 2024, and entitled "A display module and a display device", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the field of display technology, in particular, to a display module and a display device. BACKGROUND

[0003] With the increasing application of display products in outdoor scenes and under indoor light, due to the obvious mirror reflection characteristics of liquid crystal display modules, electronic display screens under direct light or sunlight will produce glare problems due to strong reflected light. In order to reduce the discomfort brought by glare, an anti-glare (AG) film layer is usually added in the display module to scatter light and greatly reduce mirror reflection, thereby reducing the impact of glare.

[0004] However, due to the uneven surface of the anti-glare module, the display screen exit light will also be scattered unevenly, causing uneven brightness in the region, giving the feeling of serious sparkle, causing a decrease in visual clarity, and affecting the sensory experience of consumers. Therefore, how to improve the sparkle of the display module and improve the visual clarity of the user has become a problem to be solved in the current field. SUMMARY

[0005] Embodiments of the present application provide a display module and a display device, aiming to solve the problem of how to improve the sparkle of the display module and improve the visual clarity of the user.

[0006] In a first aspect, the present application provides a display module, comprising a display panel;

[0007] a functional layer, the functional layer is arranged on the display side of the display panel, and a side surface of the functional layer away from the display panel is provided with a plurality of microstructures, wherein the plurality of microstructures are arranged in a plurality of target regions arranged in an array, or each microstructure is offset in a random direction relative to a target region corresponding to each microstructure.

[0008] In an optional implementation, the microstructure is a groove structure recessed toward the display panel, and adjacent microstructures are adjacently arranged in a shared boundary manner.

[0009] In an optional implementation, the plurality of target regions form a close arrangement, and the center distance between adjacent target regions is equal; the center distance between adjacent microstructures is substantially the same.

[0010] In an optional implementation, the target regions are regular polygons, and the plurality of target regions are arranged in a row direction and a first direction, and the included angle between the first direction and the row direction is equal to an internal angle of the regular polygon.

[0011] In an optional implementation, the display module further includes a polarizer, the polarizer is arranged on the display side of the display panel, and includes a plurality of substrate layers arranged in layers;

[0012] The functional layer is arranged on the side of the polarizer away from the display panel, and the functional layer is arranged on the surface of the substrate layer of the polarizer away from the display panel.

[0013] In an optional implementation, the display module further includes a polarizer, the polarizer is arranged on the display side of the display panel, and includes a plurality of substrate layers arranged in layers, and the substrate layer of the polarizer away from the display panel is multiplexed as a substrate layer of the functional layer.

[0014] In an optional implementation, the ratio of the center distance between the adjacent microstructures to the size of the pixel unit in the display panel is less than or equal to 1 / 5.

[0015] In an optional implementation, the shape of the microstructure includes a spherical shape, a hemispherical shape, a pyramid shape, or a conical shape.

[0016] In an optional implementation, the functional layer includes:

[0017] A first functional sub-layer, the first functional sub-layer is arranged close to the display panel;

[0018] A second functional sub-layer, the second functional sub-layer is arranged on the side of the first functional sub-layer away from the display panel, and the plurality of microstructures are arranged on at least part of the surface of the second functional sub-layer away from the first functional sub-layer.

[0019] The second aspect of the embodiments of the present application provides a display module, the display module includes:

[0020] A display panel;

[0021] A cover plate, the cover plate is arranged on the display side of the display panel;

[0022] An optical adhesive layer is arranged between the display panel and the cover plate, and the optical adhesive layer comprises a first optical adhesive layer, a second optical adhesive layer and a functional layer arranged in a stack, and the functional layer is arranged between the first optical adhesive layer and the second optical adhesive layer.

[0023] The side surface of the functional layer away from the display panel is provided with a plurality of microstructures, wherein the plurality of microstructures are arranged in a plurality of target regions arranged in an array, or each microstructure is offset in a random direction relative to a target region corresponding to each microstructure.

[0024] In an optional implementation, the boundaries of adjacent microstructures are independently arranged from each other.

[0025] In an optional implementation, the microstructure is a groove structure recessed toward the display panel, or the microstructure is a protruding structure protruding away from the side of the display panel.

[0026] In an optional implementation, the plurality of target regions are arranged in an array along a row direction and a third direction, and the center distance between any target region and a target region adjacent to the target region along the row direction and the third direction is the same.

[0027] In an optional implementation, the third direction is a column direction, or the third direction is a direction having an angle of 60° with the row direction.

[0028] In an optional implementation, the microstructure comprises a first microstructure and a second microstructure, and the center distance between each second microstructure and an adjacent first microstructure is substantially the same, wherein the first microstructure is a groove structure recessed toward the display panel, and the second microstructure is a protruding structure protruding away from the side of the display panel.

[0029] In an optional implementation, a first target region corresponding to the first microstructure and a first target region corresponding to the second microstructure are arranged in an array along a row direction and a column direction, and the center distance between adjacent first target regions is the same as the center distance between adjacent second target regions.

[0030] The first microstructure and the second microstructure are alternately and spacedly arranged along the row direction, and the first microstructure and the second microstructure of adjacent two rows are at least partially staggered along the column direction.

[0031] In an optional implementation, the thickness of the second optical adhesive layer along a second direction is greater than or equal to the thickness of the first optical adhesive layer along the second direction, and the second direction is a direction in which the first optical adhesive layer points to the second optical adhesive layer.

[0032] The third aspect of the embodiments of the present application provides a display module, the display module comprises:

[0033] a display panel;

[0034] an optical adhesive layer, the optical adhesive layer is arranged on the display side of the display panel;

[0035] a cover plate, the cover plate is arranged on the side of the optical adhesive layer away from the display panel, and a plurality of microstructures are arranged on the surface of the side of the cover plate away from the optical adhesive layer, wherein the plurality of microstructures are arranged correspondingly to a plurality of target regions arranged randomly, the microstructure is a groove structure recessed towards the display panel, and adjacent microstructures are arranged adjacently in a manner of sharing a boundary.

[0036] In an optional implementation, the boundaries of adjacent target regions are arranged independently of each other, and the sum of target sizes of adjacent target regions is less than the center distance between the adjacent target regions, the target size being the radius of the circumscribed circle of the target region.

[0037] The fourth aspect of the embodiments of the present application provides a display device, the display device comprises:

[0038] a display panel;

[0039] The display module as claimed in any one of the first aspect of the embodiments of the present application, or comprising the display module as claimed in any one of the second aspect of the embodiments of the present application, or comprising the display module as claimed in any one of the third aspect of the embodiments of the present application. Beneficial effects:

[0040] The present application provides a display module and a display device, the display module is arranged on the display side of the display panel, and the display module comprises: a display panel; a functional layer, the functional layer is arranged on the display side of the display panel, and the surface of the side of the functional layer away from the display panel is provided with a plurality of microstructures, wherein the plurality of microstructures are arranged in a plurality of target regions arranged in an array, or each microstructure is offset in a random direction relative to the target region corresponding to each microstructure. The present application replaces the existing anti-glare film layer by arranging the functional layer, and the plurality of microstructures arranged in the functional layer scatter light more uniformly, effectively improve the uneven brightness of the region caused by uneven scattering, reduce the problem of display flash point, and improve the visual clarity of the user.

[0041] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to make the technical solutions in the embodiments or the related art clearer, the accompanying drawings needed in the embodiments or the related art description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative effort based on these drawings.

[0043] FIG. 1 is a schematic diagram of a display module hierarchical structure according to an embodiment of the present application;

[0044] FIG. 2 is a schematic diagram of a functional layer hierarchical structure according to an embodiment of the present application;

[0045] FIG. 3 is a schematic diagram of a base material layer of a polarizer far from a display panel multiplexed as a base material layer of a functional layer according to an embodiment of the present application;

[0046] FIG. 4 is a schematic diagram of a polarizer hierarchical structure in which a side surface of a base material layer of a polarizer far from a display panel is provided according to an embodiment of the present application;

[0047] FIG. 5 is a schematic diagram of a plurality of target regions arranged in an array according to an embodiment of the present application;

[0048] FIG. 6 is a schematic diagram of a microstructure arrangement in which microstructures are offset in random directions relative to target regions according to an embodiment of the present application;

[0049] FIG. 7 is a schematic diagram of a cross section of a microstructure along A-A' according to an embodiment of the present application;

[0050] FIG. 8 is a schematic diagram of an arc surface angle of a microstructure according to an embodiment of the present application;

[0051] FIG. 9 is a schematic diagram of a functional layer hierarchical structure in which a functional layer is provided between a first optical adhesive layer and a second optical adhesive layer according to an embodiment of the present application;

[0052] FIG. 10 is a schematic diagram of a cross section of a recess structure along B-B' according to an embodiment of the present application;

[0053] FIG. 11 is a schematic diagram of a cross section of a protruding structure along B-B' according to an embodiment of the present application;

[0054] FIG. 12 is a schematic diagram of a target region arranged in an array along a row direction and a direction having an angle of 60° with the row direction according to an embodiment of the present application;

[0055] FIG. 13 is a schematic diagram of a target region arranged in an array along a row direction and a column direction according to an embodiment of the present application;

[0056] FIG. 14 is a schematic diagram of an array of first target regions and second target regions according to an embodiment of the present application;

[0057] FIG. 15 is a schematic diagram of a hierarchical structure of a microstructure disposed on a side surface of a cover plate away from an optical adhesive layer according to an embodiment of the present application;

[0058] FIG. 16 is a schematic diagram of an arrangement of target regions for forming a microstructure disposed on a surface of a cover plate according to an embodiment of the present application;

[0059] FIG. 17 is a schematic diagram of a top view of a microstructure disposed on a surface of a cover plate according to an embodiment of the present application;

[0060] FIG. 18 is a schematic diagram of a cross section of a microstructure along C-C' according to an embodiment of the present application. 1, display module; 10, LCM module; 21, polarizer; 211, first base material layer; 212, second base material layer; 213, third base material layer; 22, functional layer; 221, first functional sublayer; 222, second functional sublayer; 23, cover plate; 24, optical adhesive layer; 241, first optical adhesive layer; 242, second optical adhesive layer; 201, microstructure; 2011, first microstructure; 2012, second microstructure; 202, target region; 2021, first target region; 2022, second target region; X, row direction; Y, column direction; A, first direction; B, second direction; C, third direction; al, center distance of adjacent microstructures; a2, center distance of adjacent target regions; r, target size; d, microstructure diameter; h, size of the microstructure along the second direction. DETAILED DESCRIPTION

[0061] In order to make the objects, technical solutions, and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for 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 some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0062] The use of “adapted for” or “configured to” in the embodiments of the present application means open and inclusive language that does not exclude devices adapted for or configured to perform additional tasks or steps.

[0063] In addition, the use of “based on” means open and inclusive because a process, step, calculation, or other action that is “based on” one or more stated conditions or values can in practice be based on additional conditions or values beyond those stated.

[0064] As used in embodiments herein, "about," "approximately," or "around" includes the value recited and the average value within an acceptable range of deviation from the recited value, as determined by one of ordinary skill in the art considering the measurement in question and the error in measuring the particular quantity (i.e., the limitations of the measurement system).

[0065] As used in embodiments herein, "parallel," "perpendicular," and "equal" include the recited condition and conditions that approximate the recited condition, the approximation being within an acceptable range of deviation, as determined by one of ordinary skill in the art considering the measurement in question and the error in measuring the particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallel and near parallel, where near parallel can be within an acceptable deviation of, for example, 5°; "perpendicular" includes absolute perpendicular and near perpendicular, where near perpendicular can also be within an acceptable deviation of, for example, 5°. "Equal" includes absolute equality and near equality, where near equality can be within an acceptable deviation of, for example, less than or equal to 5% of either of the two quantities being compared.

[0066] It will be understood that when a layer or element is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate, or intervening layers can also be present.

[0067] Embodiments herein describe example implementations with reference to cross-sectional and / or plan view illustrations that are idealized representations of example embodiments. In the interest of clarity, not all of the layer and regions are shown in each illustration. Thus, the thickness and composition of some regions can be exaggerated in cross-sectional views to help clarify its features. It will also be appreciated that some variations of the example implementations can include fewer or additional layers, regions, or elements. For example, the etched regions shown as rectangular will typically have curved features. Thus, the regions illustrated in the figures are schematic only and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of example implementations.

[0068] With the display products being applied more and more in outdoor scenes, indoor light, due to the mirror reflection characteristics of the liquid crystal display module, the electronic display screen under the direct light of the light or sunlight, will produce glare problem due to the strong reflected light.

[0069] In the related art, in order to reduce the discomfort brought by glare, an anti-glare (AG) film layer is usually added in the display module to reduce the mirror reflection and reduce the influence of glare by scattering the light. Common AG film layers include a granular AG film layer arranged on a polarizer and an AG film layer arranged on a cover plate. However, due to the uneven surface of the anti-glare module, the size and arrangement uniformity of the particles cannot be controlled, so that the emitted light of the display screen is also scattered unevenly, causing uneven brightness in the region, resulting in a serious sparkle feeling, causing a decrease in visual clarity and affecting the sensory experience of consumers.

[0070] Therefore, an embodiment of the present application provides a display module. FIG. 1 shows a display module hierarchical structure diagram according to an embodiment of the present application. As shown in FIG. 1, the display module 1 includes an LCM (Liquid Crystal Display Module) module 10, the LCM including a display panel; a functional layer 22 (not shown in FIG. 1) arranged on the display side of the display panel, the functional layer 22 being configured to scatter the light emitted by the display panel; a polarizer 21 (not shown in FIG. 1) arranged on the display side of the display panel; an optical adhesive layer 24 arranged on the side of the polarizer 21 away from the display panel, the optical adhesive layer 24 being configured to connect a cover plate 23 and other hierarchical structures of the display module 1; and the cover plate 23 arranged on the side of the functional layer 22 away from the display panel.

[0071] In an embodiment of the present application, the display panel can be a conventional liquid crystal display panel, a touch liquid crystal display panel, an OLED (Organic Light Emitting Diode) display panel, or the like. Taking the display panel as a liquid crystal display panel as an example, the display panel at least includes an array substrate, a counter substrate, and a liquid crystal layer. The array substrate and the counter substrate are arranged in a cell, and the liquid crystal layer is arranged between the array substrate and the counter substrate. The array substrate includes a reflective layer, a substrate, and a pixel electrode arranged on the substrate. The counter substrate or the array substrate further includes a common electrode corresponding to the pixel electrode. The liquid crystal layer is deflected under the electric field of the pixel electrode and the common electrode to achieve a display effect.

[0072] In some optional embodiments, the cell substrate can be a color filter substrate (CF) having a color filter layer, the color filter layer in the color filter substrate including a plurality of color filters, the color filters being made of color resistance materials, the color resistance materials having a high transmittance to light in a specific wavelength range and a low transmittance to light in other wavelength ranges. In some specific examples, the color filter layer includes red color filters, green color filters and blue color filters, for displaying red, green and blue three primary colors, and then realizing color display through mixing of the red, green and blue three primary colors.

[0073] In some optional embodiments, the cell substrate can not be provided with a color filter layer, that is, the reflective liquid crystal display panel can be applicable to application scenarios without color display. In the embodiments of the present application, the specific type of the display panel can be determined according to actual conditions, and the present application is not limited. Exemplarily, the display panel includes but is not limited to any type of Twisted Nematic (TN) liquid crystal display panel, In Plane Switching (IPS) liquid crystal display panel, Advanced Super Dimension Switch (ADS) liquid crystal display panel, High Advanced Super Dimension Switch (HADS) liquid crystal display panel, etc.

[0074] In the embodiments of the present application, the cover plate 23 can be a touch panel (TP) for realizing the touch function of the touch display panel, or can be a cover glass (CG) for protecting other hierarchical structures of the display module, wherein the cover glass includes but is not limited to a glass cover plate, a plastic cover plate (such as PMAA, PC, etc.), a quartz cover plate, etc.

[0075] In the embodiments of the present application, the functional layer 22 is provided with a plurality of microstructures 201 on the side surface away from the display panel, the microstructures 201 having a non-planar surface structure, the light reaching the surface of the microstructures 201 being scattered or diffracted through the non-planar surface structure of the microstructures 201, so that the bright-dark difference of the light emitted from the functional layer 22 is reduced, thereby avoiding the generation of flash point phenomenon of the display device due to obvious bright-dark difference. Wherein the plurality of microstructures 201 can be arranged in a plurality of target regions 202, the plurality of target regions 202 being arranged in an array, so that the plurality of microstructures 201 are also arranged in an array in the same arrangement manner as the plurality of target regions 202.

[0076] In some optional embodiments, FIG. 2 shows a schematic diagram of a hierarchical structure of a functional layer, as shown in FIG. 2, the functional layer 22 includes: a first functional sub-layer 221, the first functional sub-layer 221 is arranged close to the display panel, the first functional sub-layer 221 is used as a substrate of the functional layer 22, the first functional sub-layer 221 can be a transparent non-metal film layer, for example, the material of the first functional sub-layer 221 includes but is not limited to PET (polyethylene terephthalate), COP (cyclo olefin polymer), TAC (triacetyl cellulose) and the like; a second functional sub-layer 222, the second functional sub-layer 222 is arranged on the side of the first functional sub-layer 221 away from the display panel, and is configured to refract incident light, optionally, the refractive index of the second functional sub-layer 222 is greater than or equal to 1.4 and less than or equal to 1.5, and the material of the second functional sub-layer 222 can be uv glue. The plurality of microstructures 201 are arranged on at least part of the surface of the second functional sub-layer 222 away from the first functional sub-layer 221, further, in order to maximize the scattering effect of the plurality of microstructures 201 on the second functional sub-layer 222, the plurality of microstructures are arranged in the center of at least part of the surface of the second functional sub-layer 222 away from the first functional sub-layer 221.

[0077] In some optional embodiments, the shape of the microstructure 201 includes a spherical shape, a hemispherical shape, a pyramid shape or a conical shape.

[0078] In the embodiments of the present application, since the center distance of adjacent microstructures 201 in the array arrangement of the microstructures 201 is kept consistent, the light emitted through the plurality of microstructures 201 will have a slight display defect of reflection rainbow stripes, therefore, on the basis that the plurality of microstructures 202 are arranged in the plurality of target regions 202 arranged in an array, each microstructure 201 is offset in a random direction relative to the target region 202 corresponding to each microstructure 201, so that the positions of the plurality of microstructures 201 relative to the plurality of target regions 202 arranged in an array are dithered to a certain extent, thereby making the center distance of adjacent microstructures 201 different, effectively avoiding the light emitted by the plurality of microstructures 201 from having a slight reflection rainbow stripe, and improving the display effect.

[0079] In some optional embodiments, the polarizer 21 is configured to selectively transmit light based on the polarization principle. The polarizer 21 can be a composite transparent crystal material manufactured through multiple processes such as compounding, stretching, coating, etc. The polarizer 21 includes multiple substrate layers stacked together, and the material of the substrate layers includes but is not limited to a PVA (polyvinyl alcohol) layer and a TAC layer, etc. The PVA layer is configured to achieve the polarizing function of the polarizer 21, and the TAC layer is configured to protect the PVA layer and / or perform phase compensation.

[0080] In some optional embodiments, FIG. 7 shows a cross-sectional view of a microstructure along A-A’ according to an embodiment of the present application. As shown in FIGS. 1 and 7, the functional layer 22 is arranged on the side of the polarizer 21 away from the display panel. The microstructure 201 is a groove structure recessed towards the display panel, and adjacent microstructures 201 are arranged in abutment with a common boundary. After the light reaches the multiple microstructures 201 of the functional layer 22, the light is scattered on the surface of the microstructure 201 due to the non-planar structure of the groove of the microstructure 201, thereby reducing specular reflection. Meanwhile, based on the change in the angle of the curved surface of the groove structure, the bright-dark difference caused by the scattering of light is reduced, the flash phenomenon is weakened, and the user’s sensory experience is improved.

[0081] In some optional embodiments, FIG. 8 shows an angle diagram of a curved surface of a microstructure according to an embodiment of the present application. As shown in FIG. 8, the microstructure 201 is a groove structure, and the angle of the curved surface of the groove structure is sin a = sin q / n, where n is the refractive index. When n is 1.5, q-a > 2.5°. When the light exits the curved surface of the groove structure, a haze can be provided in the case where the exit light deviates from the incident light by 2.5°. That is, when the angle a of the curved surface of the groove structure is greater than or equal to 5°, the light exiting the groove structure can provide a haze. Therefore, the haze provided by the functional layer 22 and the distribution of light exiting the functional layer 22 can be controlled by controlling the curved surface structure of the groove structure. Specifically, as shown in FIG. 7, the angle of the curved surface of the groove structure is related to the size h of the microstructure along a second direction B, which is the direction in which the functional layer 22 points to the display panel. In the case where the diameter of the groove structure is fixed, the larger the size h of the groove structure along the second direction B, the larger the angle of the curved surface, and the larger the exit angle of the light exiting the groove structure, thereby resulting in a larger haze. The size of the groove structure can be determined according to the actual needs of the display device for haze. Optionally, the size of the groove structure along the second direction B is greater than or equal to 0.5 microns and less than or equal to 3 microns, for example, the size of the groove structure along the second direction B is 1.5 microns.

[0082] In an embodiment, FIG. 3 shows a schematic diagram of a layer structure of a base material layer in a polarizer far away from a display panel multiplexed as a base material layer of a functional layer. As shown in FIG. 3, the base material layer in the polarizer 21 far away from the display panel is multiplexed as the base material layer of the functional layer 22, that is, the base material layer in the polarizer 21 far away from the display panel is the same as the base material layer of the functional layer 22. The base material layer of the functional layer 22 refers to the first functional sub-layer 221 arranged close to the display panel in the functional layer 22. The side surface of the base material layer (i.e., the first functional sub-layer 221) in the polarizer 21 far away from the display panel is provided with the second functional sub-layer 222 of the functional layer 22. The plurality of microstructures 201 are arranged on the side surface of the second functional sub-layer 222 far away from the display panel. After the light exits from the base material layer in the polarizer 21 far away from the display panel, it reaches the surface of the microstructure 201 of the functional layer 22. Because the array arrangement mode of the plurality of microstructures 201 of the functional layer 22 corresponds to or is slightly offset based on the array arrangement mode of the target region 202, the plurality of microstructures 201 of the functional layer 22 have a more uniform arrangement mode. Therefore, the light exiting from the plurality of microstructures 201 has a smaller difference between bright and dark.

[0083] Exemplarily, as shown in FIG. 3, the polarizer 21 can include a first base material layer 211, a second base material layer 212, and a third base material layer 213 arranged in layers. The second base material layer 212 is arranged on the side of the first base material layer 211 far away from the display panel. The third base material layer 213 is arranged on the side of the second base material layer 212 far away from the display panel. The third base material layer 213 is the functional layer 22. The first base material layer 211 is the TAC layer. The second base material layer 212 is the PVA layer.

[0084] In another embodiment, FIG. 4 shows a schematic diagram of a layer structure of a polarizer arranged on the side surface of a base material layer in a polarizer far away from a display panel in a functional layer. As shown in FIG. 4, the functional layer 22 is arranged on the side of the polarizer 21 far away from the display panel. The functional layer 22 is arranged on the side surface of the base material layer in the polarizer 21 far away from the display panel. After the light exits from the side of the base material layer in the polarizer 21 far away from the display panel, it reaches the surface of the microstructure 201 of the functional layer 22. Based on the scattering effect of the microstructure 201, the difference between bright and dark of the exiting light is reduced, thereby eliminating the flash point phenomenon.

[0085] Exemplarily, as shown in FIG. 4, the polarizing sheet 21 can include a first substrate layer 211, a second substrate layer 212 and a third substrate layer 213 which are sequentially stacked, the first substrate layer 211 is arranged close to the display panel, the second substrate layer 212 is arranged between the first substrate layer 211 and the third substrate layer 213, the functional layer 22 is arranged on a side of the third substrate layer 213 away from the display panel, the functional layer 22 is arranged on a surface of the third substrate layer 213 away from the display panel in the polarizing sheet 21, and the first substrate layer 211 and the third substrate layer 213 are of the same material. For example, the first substrate layer 211 and the third substrate layer 213 are the TAC layer, and the second substrate layer 212 is the PVA layer. It should be noted that the above examples are only some specific schemes given for the purpose of understanding, and the substrate layers of the actual polarizing sheet 21 are not limited to the above examples, as long as the functional layer 22 is arranged on the surface of the substrate layer away from the display panel of the polarizing sheet 21 (including direct arrangement or reuse of the substrate layer of the polarizing sheet 21 away from the display panel as the substrate layer of the functional layer 22).

[0086] In some optional embodiments, FIG. 5 shows a schematic diagram of an array arrangement of a plurality of target regions according to an embodiment of the present application. As shown in FIG. 5, the plurality of target regions 202 are arranged closely, and the center distance a2 between adjacent target regions 202 is equal. Specifically, the shape of the target region 202 is a regular polygon, such as a regular triangle, a square, a regular hexagon, etc.; the plurality of target regions 202 are arranged in an array along the row direction X and a first direction A, wherein in order to ensure that the plurality of target regions 202 are arranged closely, the angle between the first direction A and the row direction X is equal to the internal angle of the regular polygon. It should be noted that the close arrangement means that there is no gap between adjacent target regions 202, and adjacent target regions 202 are arranged in a manner of sharing adjacent sides, so that the plurality of target regions 202 are arranged in the maximum number in a fixed area. For example, in the case where the shape of the target region 202 is a regular hexagon, the plurality of target regions 202 are arranged closely to form a honeycomb structure; in the case where the shape of the target region 202 is a square, the plurality of target regions 202 are arranged closely to form a net structure.

[0087] In an embodiment, the plurality of microstructures 201 can be arranged in the plurality of target regions 202, the plurality of microstructures 201 have the same shape and size as the plurality of target regions 202, and are arranged in the row direction X and the first direction A in an array, and adjacent microstructures 201 are arranged in abutment with a shared boundary, the plurality of microstructures 201 form the same close arrangement as the plurality of target regions 202, the center distance a1 between adjacent microstructures 201 is the same, and the center distance a2 between adjacent target regions 202 is the same. In the embodiment, by arranging the plurality of microstructures 201 in the plurality of target regions 202, the shape, size, and arrangement of the plurality of microstructures 201 are consistent with the plurality of target regions 202, the center distance a1 between adjacent microstructures 201 is the same as the center distance a2 between adjacent target regions 202, thereby avoiding the generation of other optical horizontal lines when light is emitted from the microstructures 201, and effectively improving the display effect.

[0088] In another embodiment, FIG. 6 shows a microstructure arrangement diagram in which the microstructures are arranged in a random direction relative to the target regions, as shown in FIG. 6, in order to effectively reduce the flash point phenomenon by arranging the plurality of microstructures 201, and effectively eliminate rainbow lines by arranging the plurality of microstructures 201, the microstructures 201 in the embodiment are arranged in a random direction relative to the target regions 202, and the shape, size, and arrangement of the plurality of microstructures 201 are substantially the same as the plurality of target regions 202. Specifically, the plurality of target regions 202 are arranged in an array in the row direction X and the first direction A, and in order to ensure that the plurality of target regions 202 form a close arrangement, the angle between the first direction A and the row direction X is equal to the internal angle of the regular polygon; the plurality of microstructures 201 are arranged in a random direction relative to the target regions 202 on the basis of the plurality of target regions 202, adjacent microstructures 201 are arranged in abutment with a shared boundary, and the center distance a1 between adjacent microstructures 201 is substantially the same. By arranging the plurality of microstructures 201 to be offset, the plurality of microstructures 201 are not arranged in a completely equidistant manner, thereby eliminating rainbow lines when light is emitted from the plurality of microstructures 201.

[0089] The substantially same means that the center distance a1 between the adjacent microstructures 201 is consistent, slightly reduced (corresponding to the adjacent microstructures slightly close to each other) or slightly increased (corresponding to the adjacent microstructures slightly far away from each other) relative to the center distance a2 between the adjacent target areas 202, which is determined by the offset amount of the microstructures 201 in the random direction. Optionally, the center distance a1 between the adjacent microstructures 201 is greater than or equal to 3 / 4 of the center distance a2 between the adjacent target areas 202 and less than or equal to 5 / 4 of the center distance a2 between the adjacent target areas 202.

[0090] It should be noted that, for the convenience of understanding, the arrangement of the microstructures 201 shown in FIG. 6 only schematically shows the case that the microstructures 201 are offset in the random direction relative to the target areas 202 in FIG. 5, and thus the microstructures 201 shown in FIG. 6 overlap or are spaced apart with the same shape and size as the target areas 202, but in fact the adjacent microstructures 201 are arranged in abutment with a shared boundary. The adjacent microstructures 201 still share a boundary after the offset, and the shape and size of each microstructure 201 and the corresponding target area 202 are not exactly the same, but present an irregular figure similar to a regular polygon of the target area 202. Meanwhile, the adjacent microstructures 201 do not overlap or are spaced apart, but are arranged in abutment with a shared boundary by slightly increasing or reducing the area.

[0091] In some optional embodiments, in the case that the center distance of the adjacent microstructures 201 is large, on the one hand, it is easy to cause interference fringes of the light emitted from the microstructures 201, thereby adversely affecting the display effect, and on the other hand, the large microstructures 201 also increase the difficulty of the preparation process. Therefore, in the embodiments of the present application, the center distance between the adjacent microstructures 201 is less than the pixel unit size (for example, the pitch of the RGB sub-pixels) of the display panel. Optionally, the ratio of the center distance a1 between the adjacent microstructures 201 to the pixel unit size in the display panel is less than or equal to 1 / 5.

[0092] Exemplarily, the center distance a1 between the adjacent microstructures 201 is greater than or equal to 15 microns and less than or equal to 35 microns, and preferably, the center distance a1 between the adjacent microstructures 201 is 22 microns.

[0093] In some optional embodiments, when the microstructures 201 are offset relative to the target regions 202, the microstructures 201 can be offset in a random direction by a preset offset amount based on the positions of the corresponding target regions 202. The random direction can be randomly generated according to a preset manner, for example, the offset manner of each microstructure 201 can be determined based on a sine wave manner. To ensure that the arrangement of the microstructures 201 is still substantially the same as the arrangement manner of the target regions 202, and to ensure the effect of reducing the flash point of the microstructures 201, the offset amount of the microstructures 201 is randomly generated in a range less than the center distance of adjacent microstructures 201. Further, the offset amount of each microstructure 201 offset in a random direction relative to the target region 202 corresponding to each microstructure 201 is greater than or equal to 1 / 10 of the center distance a1 of adjacent microstructures 201, and less than or equal to 1 / 8 of the center distance a1 of adjacent microstructures 201.

[0094] Exemplarily, as shown in FIG. 5, the target regions 202 are hexagons, the target regions 202 are arranged in an array along the row direction and the first direction, the first direction is a direction having an angle of 120 degrees with the row direction; the boundaries shared by adjacent target regions 202 form a honeycomb structure, and each target region 202 is surrounded by six adjacent target regions 202, and the center distances of the six adjacent target regions 202 relative to the target region 202 are equal. The microstructures 201 can be completely the same as the target regions 202 in shape and size, and are arranged in a close array along the row direction and the first direction, and adjacent microstructures 201 are arranged in abutment with each other in the form of shared boundaries to form a honeycomb structure. The microstructures 201 can also be offset in a random direction relative to the target regions 202 to form irregular polygons substantially the same as the target regions 202 in shape, and the areas of the microstructures 201 are substantially the same as the areas of the target regions, and adjacent microstructures 201 are arranged in abutment with each other in the form of shared boundaries.

[0095] The present application provides a display module arranged on the display side of a display panel, which comprises: a display panel; a functional layer arranged on the display side of the display panel, and a plurality of microstructures arranged on the side surface of the functional layer away from the display panel, wherein the plurality of microstructures are arranged in a plurality of target regions arranged in an array, or each microstructure is offset in a random direction relative to a target region corresponding to the microstructure. The present application replaces the existing anti-glare film layer with the functional layer, and the plurality of microstructures arranged in the functional layer can scatter light more uniformly, effectively improve the uneven brightness of the regions caused by uneven scattering, reduce the problem of display flash point, and improve the visual clarity of the user.

[0096] Based on the same inventive concept, the embodiment of the present application provides a display module. FIG. 9 shows a schematic diagram of a hierarchical structure in which a functional layer is arranged between a first optical adhesive layer and a second optical adhesive layer. As shown in FIG. 9, the display module 1 includes an LCM module 10 including a display panel, a cover plate 23 arranged on a display side of the display panel, an optical adhesive layer 24 arranged between the display panel and the cover plate 23, the optical adhesive layer 24 including a first optical adhesive layer 241, a second optical adhesive layer 242 and a functional layer 22 arranged in a stack, the functional layer 22 being arranged between the first optical adhesive layer 241 and the second optical adhesive layer 242, and a plurality of microstructures 201 arranged on a side surface of the functional layer 22 away from the display panel, wherein the plurality of microstructures 201 are arranged in a plurality of target regions 202 arranged in an array, or each microstructure 201 is offset in a random direction relative to a target region 202 corresponding to the microstructure 201.

[0097] Optionally, the second optical adhesive layer 242 is arranged close to the display panel on a side of the functional layer 22, and the first optical adhesive layer 241 is arranged close to the cover plate 23 on a side of the functional layer 22.

[0098] In the embodiment of the present application, by arranging the functional layer 22 between the first optical adhesive layer 241 and the second optical adhesive layer 242, light emitted by the display panel and incident on the functional layer 22 is diffracted based on the plurality of microstructures 201 in the functional layer 22, which is equivalent to each light source being dispersed into a plurality of light sources under the action of diffraction, so that the region with concentrated brightness in the emitted light is caused to have a reduced brightness due to the dispersion of brightness, and the region with lower brightness is caused to have an increased brightness, thereby balancing the originally obvious bright-dark difference and improving the flash problem caused by the obvious bright-dark difference.

[0099] In some optional embodiments, a thickness of the second optical adhesive layer 242 along a second direction B is greater than or equal to a thickness of the first optical adhesive layer 241 along the second direction B, the second direction being a direction in which the first optical adhesive layer 241 points to the second optical adhesive layer 242 (i.e., a direction in which the functional layer 22 points to the display panel). Optionally, the thickness of the second optical adhesive layer 242 along the second direction B is greater than or equal to 80 microns and less than or equal to 150 microns, and the thickness of the first optical adhesive layer 241 along the second direction B is greater than or equal to 50 microns and less than or equal to 100 microns.

[0100] In the embodiment of the present application, when the functional layer 22 is arranged between the first optical adhesive layer 221 and the second optical adhesive layer 222, in order to ensure that the plurality of microstructures 201 on the functional layer 22 achieve diffraction effect, the boundaries of adjacent microstructures 201 are independently arranged from each other, so that there is a certain spacing between adjacent microstructures 201.

[0101] In some optional embodiments, FIG. 10 shows a schematic view of a cross section of a recess structure along B-B', and FIG. 11 shows a schematic view of a cross section of a protruding structure along B-B'. As shown in FIGS. 10 and 11, the microstructure 201 is a groove structure that is recessed towards the display panel, or the microstructure 201 is a protruding structure that protrudes away from the side of the display panel. Optionally, the center distance a1 of adjacent microstructures 201 is greater than or equal to 2 microns and less than or equal to 10 microns; the microstructure diameter d is greater than or equal to 1 / 5 of the center distance a1 of adjacent microstructures 201 and less than or equal to 2 / 3 of the center distance a1 of adjacent microstructures 201. It should be noted that the microstructure diameter refers to the diameter of the microstructure 201 when the orthogonal projection of the microstructure 201 on the display panel is circular, or refers to the diameter of the circumscribed circle when the projection of the microstructure 201 on the display panel is of other shapes.

[0102] In the embodiment of the present application, the plurality of target regions 202 can be arranged in an array along the row direction X and a third direction C, and the center distance a2 between any one target region 202 and a target region 202 adjacent to it along the row direction X and the third direction C is the same. The third direction C is the column direction Y, or the third direction C is a direction that forms an angle of 60° with the row direction X. The plurality of microstructures 201 are arranged in the plurality of target regions 202 arranged in an array, or each microstructure 201 is offset in a random direction relative to the target region 202 corresponding to the microstructure 201. Specifically, the plurality of microstructures 201 include but are not limited to the following multiple arrangement modes:

[0103] FIG. 12 shows a schematic view of target regions arranged in an array along the row direction and a direction that forms an angle of 60° with the row direction, according to an embodiment of the present application. As shown in FIG. 12, the third direction C is a direction that forms an angle of 60° with the row direction X (equivalently, forms an angle of 120° with the row direction X), and the plurality of target regions 202 are arranged in an array along the row direction X and the third direction C. The plurality of microstructures 201 are a plurality of groove structures or protruding structures arranged in the plurality of target regions 202 arranged in an array. The shape, size and arrangement mode of the plurality of microstructures 201 are the same as those of the plurality of target regions 202.

[0104] As shown in FIG. 12, the third direction C is a direction with an angle of 60° with the row direction X (equivalent to an angle of 120° with the row direction X), and the plurality of target regions 202 are arranged in the row direction X and the third direction C. In order to effectively weaken the flash phenomenon by arranging the plurality of microstructures 201 and effectively eliminate the rainbow stripes, the microstructures 201 are arranged in a random direction relative to the target regions 202 in the embodiment of the present application, and the plurality of microstructures 201 have shapes, sizes and arrangement modes that are substantially the same as those of the plurality of target regions 202. Specifically, the plurality of microstructures 201 are a plurality of groove structures or protrusion structures arranged in the plurality of target regions 202 arranged in an array. The plurality of microstructures 201 are arranged in a random direction relative to the target regions 202 based on the plurality of target regions 202, the boundaries of adjacent microstructures 201 are independently arranged, the center distance a1 between adjacent microstructures 201 is substantially the same, wherein the offset amount of each microstructure 201 relative to the target region 202 corresponding to each microstructure 201 in a random direction is greater than or equal to 1 / 10 of the center distance a1 of adjacent microstructures 201, and less than or equal to 1 / 4 of the center distance a1 of adjacent microstructures 201.

[0105] FIG. 13 shows a schematic diagram of an embodiment of the present application, in which a target region is arranged in an array in the row direction and the column direction. As shown in FIG. 13, the third direction C can be the column direction Y, and the plurality of target regions 202 are arranged in the row direction X and the third direction C. The plurality of microstructures 201 are a plurality of groove structures or protrusion structures arranged in the plurality of target regions 202 arranged in an array, and the plurality of microstructures 201 have shapes, sizes and arrangement modes that are substantially the same as those of the plurality of target regions 202.

[0106] As shown in FIG. 13, the third direction C can be the column direction Y, and the plurality of target areas 202 are arranged in the row direction X and the third direction C. In the embodiment, the microstructures 201 are arranged in a random direction relative to the target areas 202, and the plurality of microstructures 201 have shapes, sizes and arrangement modes substantially the same as those of the plurality of target areas 202. Specifically, the plurality of microstructures 201 are a plurality of groove structures or protrusion structures arranged in the plurality of target areas 202 arranged in an array. The plurality of microstructures 201 are arranged in a random direction relative to the target areas 202 on the basis of the plurality of target areas 202, the boundaries of adjacent microstructures 201 are independently arranged, and the center distance a1 between adjacent microstructures 201 is substantially the same. Each of the microstructures 201 is arranged in a random direction relative to the target area 202 corresponding to each of the microstructures 201, and the offset amount is greater than or equal to 1 / 10 of the center distance a1 between adjacent microstructures 201 and less than or equal to 1 / 4 of the center distance a1 between adjacent microstructures 201.

[0107] In some optional embodiments, FIG. 14 shows a schematic diagram of an array of a first target area and a second target area according to an embodiment of the present application. As shown in FIG. 14, in order to further improve the effect of reducing the flash point of the plurality of microstructures 201 of the functional layer 22, in the embodiment, both recess structures and protrusion structures are arranged in the microstructures 201 to maximize the strengthening of the diffraction of light. Specifically, the microstructures 201 include first microstructures 2011 and second microstructures 2012. The first microstructures 2011 are groove structures recessed toward the display panel, and the second microstructures 2012 are protrusion structures protruding away from the side of the display panel. The first microstructures 2011 correspond to first target areas 2021, and the second microstructures 2012 correspond to second target areas 2022. The first target areas 2021 and the second target areas 2022 are arranged in an array in the same arrangement mode, and the center distance between adjacent first target areas 2021 is the same as the center distance between adjacent second target areas 2022.

[0108] In some optional embodiments, FIG. 14 shows a schematic diagram of an array of a first target area and a second target area according to an embodiment of the present application. As shown in FIG. 14, in order to further improve the effect of reducing the flash point of the plurality of microstructures 201 of the functional layer 22, in the embodiment, both recess structures and protrusion structures are arranged in the microstructures 201 to maximize the strengthening of the diffraction of light. Specifically, the microstructures 201 include first microstructures 2011 and second microstructures 2012. The first microstructures 2011 are groove structures recessed toward the display panel, and the second microstructures 2012 are protrusion structures protruding away from the side of the display panel. The first microstructures 2011 correspond to first target areas 2021, and the second microstructures 2012 correspond to second target areas 2022. The first target areas 2021 and the second target areas 2022 are arranged in an array in the same arrangement mode, and the center distance between adjacent first target areas 2021 is the same as the center distance between adjacent second target areas 2022.

[0109] Exemplarily, as shown in FIG. 14, the first target regions 2021 corresponding to the first microstructures 2011 and the second target regions 2022 corresponding to the second microstructures 2012 are arranged in an array along the row direction X and the column direction Y, the first target regions 2021 and the second target regions 2022 are alternately and interval arranged along the row direction X, and the first target regions 2021 and the second target regions 2022 of adjacent two rows are at least partially staggered along the column direction Y. The first microstructures 2011 are arranged (including direct arrangement or offset arrangement, which will not be repeatedly described hereinafter) corresponding to the first target regions 2021, the second microstructures 2012 are arranged corresponding to the second target regions 2022, the first microstructures 2011 and the second microstructures 2012 are alternately and interval arranged along the row direction X, and the first microstructures 2011 and the second microstructures 2012 of adjacent two rows are at least partially staggered along the column direction Y.

[0110] In the embodiments of the present application, the first microstructures 2011 and the second microstructures 2012 have substantially the same shape and size. Since the first microstructures 2011 and the second microstructures 2012 are staggered when the first microstructures 2011 and the second microstructures 2012 are arranged simultaneously, the center distance between adjacent first microstructures 2011 and second microstructures 2012 is smaller than that when only one type of microstructure 201 is arranged. Therefore, in order to ensure that the boundaries of adjacent first microstructures 2011 and second microstructures 2012 are arranged independently of each other, the center distance between adjacent first microstructures 2011 (i.e., second microstructures 2012) is larger, the diameter of the first microstructure 2011 is smaller, and the offset amount of the first microstructure 2011 relative to the first target region 2021 is smaller when the first microstructure 2011 is arranged offset.

[0111] Optionally, the center distance between adjacent first microstructures 2011 is greater than or equal to 4 microns and less than or equal to 20 microns, the diameter d of the first microstructure 2011 is greater than or equal to 1 / 8 of the center distance between adjacent first microstructures 2011 and less than or equal to 1 / 2 of the center distance between adjacent first microstructures 2011, and the offset amount of each first microstructure 2011 relative to the first target region 2021 offset in a random direction is greater than or equal to 1 / 20 of the center distance between adjacent first microstructures 2011 and less than or equal to 1 / 6 of the center distance between adjacent first microstructures 2011.

[0112] The application provides a display module, which is arranged on the display side of a display panel, and comprises the display panel, a cover plate arranged on the display side of the display panel, a first optical adhesive layer arranged between the display panel and the cover plate, a second optical adhesive layer arranged between the first optical adhesive layer and the display panel, and a functional layer arranged between the first optical adhesive layer and the second optical adhesive layer, wherein the side surface of the functional layer away from the display panel is provided with a plurality of microstructures, and the plurality of microstructures are arranged in a plurality of target regions arranged in an array, or each microstructure is offset in a random direction relative to the target region corresponding to the microstructure. The application replaces the existing anti-glare film layer by arranging the functional layer, and the plurality of microstructures arranged in the functional layer can uniformly scatter light, effectively improve the uneven brightness of the regions caused by uneven scattering, reduce the display flash problem, and improve the visual clarity of the user.

[0113] Based on the same inventive concept, the application discloses a display module arranged on the display side of a display panel. FIG. 15 shows a hierarchical structure diagram of a layer of microstructures arranged on the side surface of a cover plate away from an optical adhesive layer according to an embodiment of the application. As shown in FIG. 15, the display module 1 comprises an LCM module 10 comprising a display panel, an optical adhesive layer 24 arranged on the display side of the display panel, and a cover plate 23 arranged on the side of the optical adhesive layer 24 away from the display panel, wherein the side surface of the cover plate 23 away from the optical adhesive layer 24 is provided with a plurality of microstructures 201, and the plurality of microstructures 201 are arranged corresponding to a plurality of target regions 202 arranged in a random manner, and adjacent microstructures 201 are arranged in abutment in a manner of sharing a boundary.

[0114] In the embodiment of the application, the microstructure 201 is a groove structure recessed toward the display panel. By forming a plurality of microstructures 201 on the side of the cover plate 23 away from the display panel, light is scattered when reaching the surface of the microstructure 201. The scattering of the abutted recessed structure reduces the difference in brightness in the region, thereby reducing the specular reflection and effectively avoiding the flash problem.

[0115] FIG. 16 shows a schematic diagram of an arrangement of target regions for forming microstructures on a surface of a cover plate according to an embodiment of the present application. As shown in FIG. 16, the target regions 202 are randomly distributed on the surface of the cover plate 23 on the side away from the optical adhesive layer 24, and the target regions 202 have the same shape. In order to ensure the scattering effect of the microstructures 201 formed based on the target regions 202, the boundaries of adjacent target regions 202 are independently arranged from each other, and the sum of the target sizes r of adjacent target regions 202 is less than the center distance a2 between the adjacent target regions 202. Alternatively, the center distance a2 between the adjacent target regions 202 is greater than or equal to 1.5 times the sum of the target sizes r of the adjacent target regions 202.

[0116] Alternatively, the shape of the target regions 202 includes, but is not limited to, a circle, a regular polygon, etc. For example, the shape of the target regions 202 can be a circle, a square, or a regular hexagon. It can be easily understood that when the shape of the target regions 202 is a circle, the target size r is the radius of the circle; and when the shape of the target regions 202 is a regular polygon, the target size r is the radius of the circumscribed circle of the regular polygon.

[0117] In the embodiments of the present application, the target sizes r of the target regions 202 can be the same or different. Alternatively, in order to maximize the scattering effect, the cover plate 23 includes at least two target regions 202 with different target sizes r. Alternatively, the diameter of the target regions 202 is greater than or equal to 2 microns and less than or equal to 10 microns. For example, the diameter of the target regions 202 is greater than or equal to 3 microns and less than or equal to 5 microns.

[0118] Alternatively, the target regions 202 are arranged on at least part of the surface of the cover plate 23 on the side away from the optical adhesive layer 24. For example, the ratio of the sum of the areas of the target regions 202 to the area of the surface of the cover plate 23 on the side away from the optical adhesive layer 24 is greater than or equal to 20% and less than or equal to 35%.

[0119] FIG. 17 shows a top view of a cover plate with microstructures according to an embodiment of the present application. As shown in FIG. 17, adjacent microstructures 201 are arranged in abutment with shared boundaries. The microstructures 201 are formed based on the corresponding target regions 202. Since the target regions 202 are regions with regular shapes and independently arranged boundaries, the microstructures 201 extend outward based on the corresponding target regions 202 until the boundaries of the microstructures 201 contact the boundaries of adjacent microstructures 201, forming shared boundaries.

[0120] In some optional embodiments, FIG. 18 shows a schematic view of a cross section of the microstructure along C-C'. As shown in FIG. 18, the microstructure 201 is a groove structure recessed towards the display panel. Optionally, the size h of the microstructure along the second direction is greater than or equal to 0.5 microns and less than or equal to 3 microns; and the diameter d of the microstructure is greater than or equal to 12 microns and less than or equal to 40 microns. For example, the size h of the microstructure along the second direction is 1.5 microns; and the diameter d of the microstructure is 20 microns.

[0121] In some optional embodiments, the plurality of microstructures 201 are formed based on a yellow light process at the corresponding target regions 202. Specifically, a photoresist layer is formed on the surface of the cover plate 23, the photoresist layer is subjected to a patterning process to form a pattern of the target region 202; and the pattern of the target region 202 is etched by using a wet etching method (the etching solution is 5-15% HF, 3-8% HNO3, 0.5-5% HCl and 0-5% H2SO4) to form the plurality of microstructures 201 which are adjacently arranged in a manner of sharing a boundary.

[0122] The display module is arranged on the display side of the display panel, and includes: a display panel; an optical adhesive layer arranged on the display side of the display panel; and a cover plate arranged on the side of the optical adhesive layer away from the display panel, wherein the side surface of the cover plate away from the optical adhesive layer is provided with a plurality of microstructures, the plurality of microstructures are arranged corresponding to a plurality of target regions arranged randomly, the microstructure is a groove structure recessed towards the display panel, and adjacent microstructures are adjacently arranged in a manner of sharing a boundary. The plurality of microstructures arranged adjacently to each other are directly formed on the side surface of the cover plate away from the optical adhesive layer to replace the existing anti-glare film layer, the light is more uniformly scattered based on the plurality of microstructures, the problem of uneven brightness in different regions caused by uneven scattering is effectively improved, the problem of display flash point is reduced, and the visual clarity of the user is improved.

[0123] Based on the same inventive concept, the display device includes a display module 1, which is the display module described in the embodiments of the present application.

[0124] In the embodiments of the present application, the display device is a product with image display function. Optionally, the display device can be used to display static images such as pictures, photos, etc.; and the display device can also be used to display dynamic images such as videos, game screens, etc.

[0125] In some alternative embodiments, the display device includes, but is not limited to, a notebook computer, a mobile phone, a wireless device, a personal data assistant (PDA), a handheld or portable computer, a GPS receiver / navigator, a camera, an MP4 video player, a camcorder, a game console, a watch, a clock, a calculator, a television monitor, a flat panel display, a computer monitor, an automobile display, a navigation instrument, a cockpit controller and / or display, a display of a camera view, an electronic photograph, an electronic billboard or sign, a projector, a packaging and aesthetic structure, and the like.

[0126] Each of the embodiments in the present specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0127] In the description of the present specification, it should be understood that the terms "center", "thickness", "upper", "lower", "front", "back", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0128] In the present application, unless specifically defined and limited otherwise, the terms "mount", "connect", "connection", "fixed", and the like should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection, or communication; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0129] In the present application, unless specifically defined and limited otherwise, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0130] The above-described applications have several aspects or examples to implement different structures of the present application. In order to simplify the present application, the components and arrangements of the specific examples are described above. Of course, they are only examples and the purpose is not to limit the present application. In addition, the present application can repeat reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or arrangements discussed.

[0131] The term "one embodiment", "an embodiment" or "one or more embodiments" as used herein means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.

[0132] In the specification provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail in order not to obscure the understanding of the present specification.

[0133] Finally, it should also be noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, so that a process, method, article, or terminal device including a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or terminal device. Without more limitations, an element defined by the statement "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or terminal device including the element.

[0134] The above provides a display module and a display device provided by the present application in detail, and the principles and implementation manners of the present application are described by specific examples in the present specification. The above example descriptions are only for helping to understand the method of the present application and its core idea; at the same time, for the general technical personnel in the art, according to the idea of the present application, the specific implementation manner and application range will be changed, and the above description of the present specification should not be understood as limiting the present application.

Claims

1. A display module, wherein, The display module comprises: a display panel; a functional layer, which is arranged on the display side of the display panel and is provided with a plurality of microstructures on the side surface thereof away from the display panel, wherein the plurality of microstructures are arranged in a plurality of target regions arranged in an array, or each microstructure is offset in a random direction relative to a target region corresponding to the microstructure.

2. The display module of claim 1, wherein, The microstructure is a groove structure recessed towards the display panel, and adjacent microstructures are arranged in abutment with a shared boundary.

3. The display module of claim 1, wherein, The plurality of target regions are closely arranged, and the center distance between adjacent target regions is equal; the center distance between adjacent microstructures is substantially the same.

4. The display module of claim 3, wherein, The target regions are in the shape of regular polygons, and the plurality of target regions are arranged in an array along a row direction and a first direction, and the included angle between the first direction and the row direction is equal to the internal angle of the regular polygon.

5. The display module of claim 1, wherein, The display module further comprises a polarizer arranged on the display side of the display panel, which comprises a plurality of substrate layers arranged in a stack; The functional layer is arranged on the side of the polarizer away from the display panel, and is arranged in close contact with the side surface of the substrate layer of the polarizer away from the display panel.

6. The display module of claim 1, wherein, The display module further comprises a polarizer arranged on the display side of the display panel, which comprises a plurality of substrate layers arranged in a stack, and the substrate layer of the polarizer away from the display panel is reused as a substrate layer of the functional layer.

7. The display module of claim 3, wherein, The ratio of the center distance between adjacent microstructures to the size of a pixel unit in the display panel is less than or equal to 1 / 5.

8. The display module according to any one of claims 1 to 7, wherein, The shape of the microstructure comprises a sphere, a hemisphere, a pyramid or a cone.

9. The display module of any one of claims 1 to 7, wherein, The functional layer comprises: a first functional sub-layer arranged close to the display panel; a second functional sub-layer arranged on the side of the first functional sub-layer away from the display panel, and the plurality of microstructures are arranged on at least part of the surface of the second functional sub-layer away from the first functional sub-layer.

10. A display module, wherein, The display module comprises: a display panel; a cover plate arranged on the display side of the display panel; an optical adhesive layer arranged between the display panel and the cover plate, the optical adhesive layer comprising a first optical adhesive layer, a second optical adhesive layer and a functional layer arranged in a stack between the first optical adhesive layer and the second optical adhesive layer; The functional layer is provided with a plurality of microstructures on the side surface thereof away from the display panel, wherein the plurality of microstructures are arranged in a plurality of target regions arranged in an array, or each microstructure is offset in a random direction relative to a target region corresponding to the microstructure.

11. The display module of claim 10, wherein, The boundaries of adjacent microstructures are independently arranged from each other.

12. The display module of claim 10, wherein, The microstructure is a groove structure recessed towards the display panel, or the microstructure is a protruding structure protruding away from the side of the display panel.

13. The display module of claim 12, wherein, The plurality of target regions are arranged in an array along a row direction and a third direction, and the center distance between any one target region and the target regions adjacent thereto along the row direction and the third direction is the same.

14. The display module of claim 13, wherein, The third direction is a column direction, or the third direction is a direction with an angle of 60° with the row direction.

15. The display module of claim 10, wherein, The microstructure includes first microstructures and second microstructures, and a center distance between each second microstructure and an adjacent first microstructure is substantially the same, wherein the first microstructure is a groove structure recessed toward the display panel, and the second microstructure is a protrusion structure protruding away from a side of the display panel.

16. The display module of claim 15, wherein, The first target region corresponding to the first microstructure and the first target region corresponding to the second microstructure are arranged in an array along the row direction and the column direction, and a center distance between adjacent first target regions is the same as a center distance between adjacent second target regions. The first microstructure and the second microstructure are alternately and spacedly arranged along the row direction, and first microstructures and second microstructures of adjacent two rows are at least partially staggered along the column direction.

17. The display module of claim 10, wherein, A thickness of the second optical adhesive layer along a second direction is greater than or equal to a thickness of the first optical adhesive layer along the second direction, and the second direction is a direction in which the first optical adhesive layer points to the second optical adhesive layer.

18. A display module, wherein, The display module includes: a display panel; an optical adhesive layer, disposed on a display side of the display panel; a cover plate, disposed on a side of the optical adhesive layer away from the display panel, and a surface of the cover plate away from the optical adhesive layer is provided with a plurality of microstructures, wherein the plurality of microstructures are provided corresponding to a plurality of target regions arranged randomly, the microstructure is a groove structure recessed toward the display panel, and adjacent microstructures are adjacently arranged in a manner of sharing a boundary.

19. The display module of claim 18, wherein, Boundaries of adjacent target regions are independently arranged, a sum of target sizes of adjacent target regions is less than a center distance between adjacent target regions, and the target size is a circumscribed circle radius of the target region.

20. A display device comprising: The display device includes the display module of any one of claims 1 to 9, or the display module of any one of claims 10 to 17, or the display module of claim 18 or 19.

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