CN117008370A

CN117008370A - Display module and electronic equipment

Info

Publication number: CN117008370A
Application number: CN202210461138.6A
Authority: CN
Inventors: 占江徽; 汪张宝; 李虎; 张云云; 赵雪梅; 董钊; 张斗庆
Original assignee: BOE Technology Group Co Ltd; Hefei BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Hefei BOE Optoelectronics Technology Co Ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2023-11-07

Abstract

The disclosure provides a display module and electronic equipment, relates to the technical field of display, and is used for improving rainbow line defects. The display module includes: comprises a reflective display panel, a front light module and a cover plate; the front light module is arranged on the display side of the reflective display panel, and the cover plate is attached to one side, far away from the reflective display panel, of the front light module through a frame glue frame; the cover plate is provided with a first microstructure layer towards one side of the front light module, the first microstructure layer comprises a first part located in the frame glue surrounding area, and the first part comprises a plurality of first microstructures.

Description

Display module and electronic equipment

Technical Field

The disclosure relates to the field of display technologies, and in particular, to a display module and an electronic device.

Background

In a reflective display module having front light, a reflective display panel, a front light module, and a cover plate are generally included; the front light module is arranged on the display side of the reflective display panel, the cover plate is attached to one side, far away from the reflective display panel, of the front light module through a frame adhesive frame, a frame adhesive gap is supported between the cover plate and the front light module through the frame adhesive, and air is filled in the frame adhesive gap to form an air film.

The cover plate is easy to deform under the action of external force (such as finger touch and press, writing by a capacitance pen, accidental extrusion and the like), the thickness of an air film between the deformed cover plate and the front light module is reduced even to zero (the cover plate is in direct contact with the front light module), and therefore color Newton rings, namely rainbow veins, appear at the deformation position.

Disclosure of Invention

An embodiment of the disclosure provides a display module and electronic equipment for improving rainbow defects caused by deformation of a cover plate.

In order to achieve the above object, the embodiments of the present disclosure provide the following technical solutions:

in one aspect, a display module is provided, including a reflective display panel, a front light module, and a cover plate; the front light module is arranged on the display side of the reflective display panel, and the cover plate is attached to one side, far away from the reflective display panel, of the front light module through a frame glue frame;

the cover plate is provided with a first microstructure layer towards one side of the front light module, the first microstructure layer comprises a first part located in the frame glue surrounding area, and the first part comprises a plurality of first microstructures.

In the above display module, the first microstructure in the first microstructure layer makes the first microstructure layer have a surface of the microstructure layer that is uneven with respect to the cover plate on a side close to the front light module. When the surface of the uneven microstructure layer is in contact with the front optical module along with the deformation of the cover plate, the thickness of the air film around the contact position is also in a state of different sizes, so that on one hand, the optical path difference at the same distance from the contact position is different, and the condition of equal thickness interference is destroyed; on the other hand, at the same distance from the contact location, the uneven microstructure layer surface may have a location with an air film thickness greater than the wave train length and a location with an air film thickness not greater than the wave train length, thereby impeding the generation of rainbow patterns in a partial region.

In the position where the color Newton rings occur, the uneven microstructure layer surface can also enable the interference ring in the color Newton rings to protrude outwards in some positions and protrude inwards in some positions; thereby disturbing the extending direction of the interference circle among the color newton rings. The outward protruding part and the inward protruding part of the interference ring can be overlapped with other interference rings with different poles, and the overlapped colors become or tend to be white when the interference rings with different poles are overlapped because the interference rings with different poles have different colors; thereby improving or even eliminating color newton rings.

In addition, the structural characteristics of the surface fluctuation of the microstructure layer can not be completely close to the cover plate when the cover plate is in contact with the front light module, so that vacuum adsorption is avoided, and the problem that color Newton rings (rainbow lines) cannot be eliminated after external force is removed is avoided. Furthermore, the first microstructure layer can improve and even eliminate the color Newton rings, so that the design of the display module is facilitated to be light and thin.

In some embodiments, at least one first microstructure of the plurality of first microstructures is different from another first microstructure in a three-dimensional shape and/or size.

In some embodiments, at least one first microstructure of the plurality of first microstructures is not equal to another first microstructure for a maximum height, a minimum height, and/or a difference in height of the first microstructures relative to the cover plate.

In some embodiments, the maximum dimension of at least one first microstructure is on the order of hundred nanometers or less, the maximum dimension being the maximum value of the linear distance between any two points in the first microstructure.

In some embodiments, the first microstructure is a convex structure protruding toward the front light module, or a concave structure recessed in a direction away from the front light module;

the first microstructure is spherical, hemispherical, pyramid-shaped or cone-shaped.

In some embodiments, the plurality of first microstructures is distributed continuously or near continuously.

In some embodiments, the front light module includes a light guide plate, one side of the light guide plate is attached to the reflective display panel, and the other side of the light guide plate is connected to the cover plate through the frame glue;

in the surrounding area of the frame glue, the light guide plate is provided with a plurality of dimming structures;

the distribution density of the plurality of first microstructures is greater than the distribution density of the plurality of dimming structures.

In some embodiments, the first microstructured layer is an atomized layer having a haze of less than or equal to 10%.

In some embodiments, the display module further includes a second microstructure layer disposed on a side of the first microstructure layer away from the front light module, the second microstructure layer being an atomized layer having a haze greater than a haze of the first microstructure layer.

In some embodiments, the second microstructured layer has a haze of 20% or more.

In some embodiments, the first microstructured layer is an antiglare film affixed to the cover plate, the antiglare film comprising a substrate and a plurality of atomized particles disposed on the substrate; the substrate is attached to the cover plate, and the plurality of atomized particles form the plurality of first microstructures.

In some embodiments, the first microstructured layer is an atomized layer fabricated on the cover plate.

In some embodiments, the display module further includes an anti-reflection layer disposed on a side of the first microstructure layer away from the cover plate.

In some embodiments, the cover plate is a touch panel or/and cover glass.

In another aspect, an electronic device is provided. The electronic device includes: the display module assembly of any one of the above embodiments.

The display device has the same structure and beneficial technical effects as those of the display module provided in some embodiments, and will not be described in detail herein.

Drawings

In order to more clearly illustrate the technical solutions of the present disclosure, the drawings that need to be used in some embodiments of the present disclosure will be briefly described below, and it is apparent that the drawings in the following description are only drawings of some embodiments of the present disclosure, and other drawings may be obtained according to these drawings to those of ordinary skill in the art. Furthermore, the drawings in the following description may be regarded as schematic diagrams, not limiting the actual size of the products, the actual flow of the methods, the actual timing of the signals, etc. according to the embodiments of the present disclosure.

FIG. 1 is a block diagram of a display module according to some embodiments;

FIG. 2 is a block diagram of a reflective display panel according to some embodiments;

FIG. 3 is a diagram showing the assembly of the cover plate and the light guide plate in FIG. 1;

FIG. 4 is a diagram showing a structure of the light guide plate and the deformable cover plate in FIG. 3;

FIG. 5 is a block diagram of another display module according to some embodiments;

FIG. 6 is a schematic diagram of the first microstructure layer of FIG. 5;

FIG. 7 is a diagram showing a structure of the light guide plate and the deformable cover plate in FIG. 5;

FIG. 8 is a graph of the effect of a protruding structure on an interference ring according to some embodiments;

FIG. 9 is a graph of the effect of a concave structure on an interference ring according to some embodiments;

FIG. 10 is a block diagram of male and female microstructures according to some embodiments;

FIG. 11 is a block diagram of a first microstructured layer in accordance with some embodiments;

FIG. 12 is a block diagram of another first microstructured layer in accordance with some embodiments;

FIG. 13 is a block diagram of yet another first microstructured layer in accordance with some embodiments;

FIG. 14 is a block diagram of yet another first microstructured layer in accordance with some embodiments;

FIG. 15 is a graph of haze of a first microstructure layer versus contrast ratio of a display module according to some embodiments;

FIG. 16 is a block diagram of AG membranes according to some embodiments;

FIG. 17 is a block diagram of an atomization layer according to some embodiments;

FIG. 18 is a block diagram of another display module according to some embodiments;

FIG. 19 is a block diagram of yet another display module according to some embodiments;

fig. 20 is a block diagram of another display module according to some embodiments.

Detailed Description

The following description of the embodiments of the present disclosure will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by one of ordinary skill in the art based on the embodiments provided by the present disclosure are within the scope of the present disclosure.

Throughout the specification and claims, the term "comprising" is to be interpreted as an open, inclusive meaning, i.e. "comprising, but not limited to, unless the context requires otherwise. In the description of the present specification, the terms "one embodiment," "some embodiments," "example embodiments," "examples," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present disclosure, unless otherwise indicated, the meaning of "a plurality" is two or more.

In describing some embodiments, expressions of "coupled" and "connected" and derivatives thereof may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more elements are in direct physical or electrical contact with each other. As another example, the term "coupled" may be used in describing some embodiments to indicate that two or more elements are in direct physical or electrical contact. However, the term "coupled" or "communicatively coupled (communicatively coupled)" may also mean that two or more elements are not in direct contact with each other, but yet still co-operate or interact with each other. The embodiments disclosed herein are not necessarily limited to the disclosure herein.

At least one of "A, B and C" has the same meaning as at least one of "A, B or C," both include the following combinations of A, B and C: a alone, B alone, C alone, a combination of a and B, a combination of a and C, a combination of B and C, and a combination of A, B and C.

"A and/or B" includes the following three combinations: only a, only B, and combinations of a and B.

As used herein, the term "if" is optionally interpreted to mean "when … …" or "at … …" or "in response to a determination" or "in response to detection" depending on the context. Similarly, the phrase "if determined … …" or "if detected [ stated condition or event ]" is optionally interpreted to mean "upon determining … …" or "in response to determining … …" or "upon detecting [ stated condition or event ]" or "in response to detecting [ stated condition or event ]" depending on the context.

The use of "adapted" or "configured to" herein is meant to be an open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

In addition, the use of "based on" is intended to be open and inclusive in that a process, step, calculation, or other action "based on" one or more of the stated conditions or values may be based on additional conditions or beyond the stated values in practice.

As used herein, "about," "approximately" or "approximately" includes the stated values as well as average values within an acceptable deviation range of the particular values as determined by one of ordinary skill in the art in view of the measurement in question and the errors associated with the measurement of the particular quantity (i.e., limitations of the measurement system).

As used herein, "parallel", "perpendicular", "equal" includes the stated case as well as the case that approximates the stated case, the range of which is within an acceptable deviation range as determined by one of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., limitations of the measurement system). For example, "parallel" includes absolute parallel and approximately parallel, where the acceptable deviation range for approximately parallel may be, for example, a deviation within 5 °; "vertical" includes absolute vertical and near vertical, where the acceptable deviation range for near vertical may also be deviations within 5 °, for example. "equal" includes absolute equal and approximately equal, where the difference between the two, which may be equal, for example, is less than or equal to 5% of either of them within an acceptable deviation of approximately equal.

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 may also be present between the layer or element and the other layer or substrate.

Exemplary embodiments are described herein with reference to cross-sectional and/or plan views as idealized exemplary figures. In the drawings, the thickness of layers and regions are exaggerated for clarity. Thus, variations from the shape of the drawings due to, for example, manufacturing techniques and/or tolerances, are to be expected. Thus, the exemplary embodiments should not be construed as limited to the shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Thus, the regions illustrated in the figures are schematic in nature 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 embodiments.

Embodiments of the present disclosure provide a display module, and fig. 1 is a structural diagram of a display module according to some embodiments, and as shown in fig. 1, the display module in the embodiments of the present disclosure includes a reflective display panel 1, a front light module 6, and a cover plate 4. Among them, the reflective display panel 1 realizes display by reflecting external light, such as ambient light, incident inside the display panel.

The reflective display panel 1 has a plate-like structure and includes a display side 11 and a display back side 12 which are opposite to each other, wherein a direction between the display back side 12 and the display side 11 is a display direction of the reflective display panel 1, and a user views display contents of the reflective display panel 1 in front of the display side 11. Taking the orientation shown in fig. 1 as an example, the upper side of the reflective display panel 1 in fig. 1 is the display side 11, and the lower side of the reflective display panel 1 is the display back side 12.

As an embodiment of the reflective display panel 1, the reflective display panel 1 may be a reflective liquid crystal display panel, and fig. 2 is a structural diagram of the reflective liquid crystal display panel according to some examples, and as shown in fig. 2, the reflective liquid crystal display panel includes an Array (Array) substrate 14, a counter substrate 13, and a liquid crystal layer 15, the Array substrate 14 and the counter substrate 13 being disposed opposite to each other, and the liquid crystal layer 15 being disposed between the Array substrate 14 and the counter substrate 13 opposite to each other.

The array substrate 14 includes a reflective layer, a substrate, and pixel electrodes disposed on the substrate, and a common electrode corresponding to the pixel electrodes is further disposed on the counter substrate 13 or the array substrate 14. When a driving voltage is applied between the pixel electrode and the common electrode, an electric field is generated between the pixel electrode and the common electrode, the liquid crystal layer 15 between the pixel electrode and the common electrode is turned over under the action of the electric field, and the light transmission quantity can be changed by turning over the liquid crystal layer 15, so that the display control of the reflective liquid crystal display panel can be realized by applying the driving voltage between the pixel electrode and the common electrode.

The reflective layer is disposed on the substrate, and may be disposed on a side of the substrate away from the pixel electrode, or may be disposed on a side of the pixel electrode away from the substrate, or may be disposed between the substrate and the pixel electrode. For example, in the present embodiment, the reflective layer is disposed on a side of the pixel electrode away from the substrate.

In the display process of the reflective liquid crystal display panel, external light irradiates the reflective layer from the opposite box substrate 13 and the liquid crystal layer 15, the reflective layer reflects the external light to form reflected light, and the reflected light irradiates the outside of the reflective liquid crystal display panel through the liquid crystal layer 15 and the opposite box substrate 13, so that reflective display is realized. By controlling the driving voltage between the pixel electrode and the common electrode, the inversion of the liquid crystal between the pixel electrode and the common electrode can be controlled, and the adjustment of the light transmission amount of the light reflected by the reflective layer can be achieved by the inversion of the liquid crystal layer 15.

The opposite substrate 13 may be a Color Filter (CF) substrate having a color filter layer, where the color filter layer includes a plurality of optical filters made of a color resist material, and the color resist material has a higher light transmittance in a specific wavelength range and a lower light transmittance in other wavelength ranges. That is, the color blocking material can allow light of a specific wavelength to pass therethrough and block light of other wavelengths, thereby allowing the passing light to display a preset color. For example, in some specific examples, the color film layer includes a red filter, a green filter, and a blue filter for displaying three primary colors of red, green, and blue, and then color display is realized by mixing the three primary colors of red, green, and blue.

In a possible embodiment, the opposite case substrate 13 may not be provided with a color film layer, that is, the reflective liquid crystal display panel may be suitable for an application scenario in which color display is not performed. The reflective liquid crystal display panel may be any of a Twisted Nematic (TN, twisted Nematic) liquid crystal display panel, an in-plane switching (IPS, in Plane Switching) liquid crystal display panel, an advanced super-dimensional field switching (ADS, advanced Super Dimension Switch) liquid crystal display panel, an ultra-high-level super-dimensional field switching (HADS, high Advanced Super Dimension Switch) liquid crystal display panel, and the like; embodiments of the present disclosure are not limited to a particular type of reflective liquid crystal display panel.

The above embodiment describes a liquid crystal display panel as an example of the reflective display panel 1, but the display module provided in the embodiment of the disclosure is not limited to this, and as other implementations of the reflective display panel 1, the reflective display panel 1 may be other types of display panels capable of realizing reflective display, such as an electrophoretic display panel (EPD), an E-Ink display panel, and a CID (clear Ink) display panel. The embodiments of the present disclosure are not limited to a specific type of reflective display panel 1.

In a possible embodiment, the reflective display panel 1 further comprises a Polarizer (POL) Polarizer disposed on the display side 11 of the reflective display panel 1.

As can be seen from the above description of the working principle of the reflective display panel 1, the reflective display panel 1 realizes the display function by reflecting the external light, so that the intensity of the external light directly affects the display effect of the reflective display panel 1, which has a certain limitation in the use process. For example, in a dark light environment, the reflective display panel 1 has poor display effect, and display is unclear; in dark, no light environment, the reflective display panel 1 cannot display directly. Based on this, in some products, for example, in the embodiment shown in fig. 1, the display module is provided with a front light module 6 on the display side 11 of the reflective display panel 1, where the front light module 6 is used to provide a light source for displaying the reflective display panel 1, so as to ensure that the reflective display panel 1 can realize normal display in dim light and no light environments.

Fig. 3 is a mating view of the cover plate and the Light guide plate in fig. 1, please refer to fig. 1 and 3, in some embodiments, the front Light module 6 includes a front Light source (Light Bar, abbreviated as LB) 62 and a Light guide plate (Light Guide Plate, abbreviated as LGP) 61, wherein the Light guide plate 61 is generally a plate-like structure disposed parallel to the reflective display panel 1, and includes a first side 611 and a second side 612 disposed opposite to each other along a display direction, and a peripheral end surface connecting the first side 611 and the second side 612; the first side 611 is close to the reflective display panel 1 with respect to the second side 612.

The reflective display panel 1 and the light guide plate 61 may be fully bonded or frame bonded. Illustratively, in the embodiment shown in fig. 1, the light guide plate 61 is fully attached to the display side 11 of the reflective display panel 1 by a transparent optical adhesive (Optically Clear Adhesive, abbreviated OCA) 2. In the embodiment with the polarizer, the light guide plate 61 is fully attached to the polarizer through the transparent optical cement 2. The front light source 62 is disposed outside the outer peripheral end surface of the light guide plate 61, and the light generated by the front light source 62 is introduced from the outer peripheral end surface of the light guide plate 61, guided and reflected to the display side 11 of the reflective display panel 1 by the light guide plate 61, enters the reflective display panel 1 from the display side 11, and provides a light source for the reflective display panel 1. The reflective display panel 1 adopts the light source of the front light module 6 to perform reflective display, so that the reflective display panel 1 can normally display even in dark light and dark environments, the use scene of the reflective display panel 1 is enlarged, and the display effect of the reflective display panel 1 can be remarkably improved.

The display module provided in the embodiment of the disclosure further includes a cover plate 4, where the cover plate 4 is disposed on a side of the light guide plate 61 away from the reflective display panel 1, that is, the second side 612 of the light guide plate 61. In some possible application scenarios, the Cover plate 4 includes a Touch Panel (TP) 41 and a Cover Glass (CG) 42, where the Touch Panel 41 is used for implementing the Touch function of the display module, and the Cover Glass 42 is disposed on a side of the Touch Panel 41 away from the reflective display Panel 1, so as to protect the Touch Panel 41 and the reflective display Panel 1 to some extent.

In some other possible application scenarios, for example: the display module is not provided with the touch panel 41, the touch panel 41 in the display module is in an externally hung mode or the touch panel 41 is arranged at other positions of the display module, and the cover plate 4 in the display module is cover plate glass 42 and does not comprise the touch panel 41.

In a possible embodiment, the cover glass 42 can also be replaced by other transparent plate-like structures, such as: quartz cover plates, plastic cover plates, etc., wherein the plastic cover plates can be made of PMMA (polymethyl methacrylate, polymethyl methacrylate, also known as plexiglas, acryl) or Polycarbonate (abbreviated PC), etc.

With continued reference to fig. 1, in the display module provided in the embodiments of the present disclosure, the cover plate 4 is a generic term of the touch panel 41 and the cover plate glass 42, the cover plate 4 includes the touch panel 41 and the cover plate glass 42, and the cover plate glass 42 is disposed on a side of the touch panel 41 away from the reflective display panel 1.

With continued reference to fig. 3, the light guide plate 61 in the front light module 6 is attached to the cover plate 4 by the frame glue 3 on a side away from the reflective display panel 1, i.e. the second side 612 of the light guide plate 61. The frame glue 3 is typically a glue structure extending along a closed contour, for example the frame glue 3 may be a block glue. A certain gap is kept between the light guide plate 61 and the cover plate 4 in the display direction of the display module under the support of the frame glue 3, and the gap between the light guide plate 61 and the cover plate 4 supported by the frame glue 3 is a frame attaching gap 5.

It will be appreciated that the size of the frame attachment gap 5 is related to the thickness of the frame adhesive 3, the frame attachment gap 5 that can be supported by the thicker frame adhesive 3 is larger, and the frame body gap that can be supported by the thinner frame adhesive 3 is smaller.

The space between the light guide plate 61 and the cover plate 4 surrounded by the frame glue 3 is defined as a frame glue space, the frame glue space is filled with air, an air film with a thickness is formed, namely, an air GAP is formed, and the size of the air film is equal to that of the frame pasting GAP 5 at the position.

Although the cover plate 4 generally has a certain requirement for rigidity, due to the influence of factors such as self materials and structures, the cover plate 4 deforms towards the light guide plate 61 under the action of natural state or external force, and when the deformation amplitude reaches a certain degree, for example, when the cover plate contacts the light guide plate 61, color newton rings, namely rainbow lines, are generated at contact positions, namely, the centers of the color newton rings, namely, the contact positions.

Newton's ring is a thin film interference phenomenon, which is a phenomenon that a new light wave is formed by mutual interference because light waves are reflected by the upper interface and the lower interface of a thin film respectively under the assumption that a light wave is irradiated on the thin film and the refractive indexes are different.

Newton rings are equal-thickness interference phenomena in thin film interference, and interference patterns are concentric rings with alternate brightness and darkness. For example, when a convex surface of a convex lens with a large curvature radius is contacted with a plane glass, a contact point in an interference pattern can be seen as a dark point under sunlight or white light irradiation, and a plurality of colored rings with alternate brightness and darkness are arranged around the contact point; when the interference pattern is irradiated by monochromatic light, the interference pattern is expressed as monochromatic rings with alternate brightness and darkness. The circular rings (colored circular rings or monochromatic circular rings) in the Newton rings are interference circular rings formed by mutual interference of light rays, the order of the interference circular rings relative to the circle center is the pole times of the interference circular rings, and for the colored circular rings, the colored circular rings with different poles in the interference pattern have different colors.

In a common application scenario of the display module in the embodiment of the disclosure, the display module is usually used under sunlight and white light, so that the newton rings are colored newton rings with colors, and colored interference rings with different polarities in the interference pattern have different colors.

The principle of generating color newton rings by the display module in the embodiment shown in fig. 1 is as follows:

referring to fig. 4, when the cover plate 4 in the display module is deformed to contact with the light guide plate 61, the deformed cover plate 4 forms a convex structure similar to a convex lens, the convex structure extends toward the light guide plate 61, and the side surface of the cover plate 4 contacts with the light guide plate 61. Around the contact position of the cover plate 4 and the light guide plate 61, a round wedge-shaped air film with uneven change is formed between the cover plate 4 and the light guide plate 61; when external light is perpendicularly emitted to the deformation position (i.e., contact position) of the cover plate 4, two beams of light reflected from the upper and lower surfaces of the wedge-shaped air film are superimposed on each other to generate interference. The thickness of the air film is the same at the position of the circular ring with the same radius from the contact position, and the reflection optical path difference of the upper surface and the lower surface is the same, so that the interference pattern is in a circular ring shape.

When the cover plate 4 and the light guide plate 61 are irradiated by sunlight or white light, the contact position of the cover plate is seen as a dark point, the interference pattern is represented by a plurality of color rings with alternate brightness and darkness taking the contact position as the center, namely, color Newton rings are generated at the contact position, and the center of the color Newton rings is the contact position; the circles of different polarity in the interference pattern have different colors.

An important condition for generating the color Newton rings is that the thickness of the air film is smaller than the wave train length, and when the thickness of the air film is larger than the wave train length, the generation of the color Newton rings can be avoided because interference cannot occur. Those skilled in the art will appreciate that the wave train length of a typical light source is typically on the order of a few microns.

Based on this, in order to avoid the display module from generating color newton rings in a natural state, in a possible embodiment, the thickness of the air film between the cover plate 4 and the light guide plate 61 may be controlled to be always greater than the wave train length, that is, the frame adhesive 3 needs to control the frame adhesion gap 5 between the cover plate 4 and the light guide plate 61 to be always greater than the wave train length. The cover plate 4 also has a certain warpage, so that the frame attachment gap 5 can be set according to the warpage and the wave train length of the cover plate 4. For example, in some products, the warpage of the cover plate 4 is generally controlled within 0.5mm, so that a frame-pasting gap 5 above 0.5mm is generally required to be reserved through the frame glue 3.

However, in the use process of the display module, the cover plate 4 is also subjected to external force, such as finger touch and pressing, writing with a capacitance pen, accidental extrusion, and the like, the cover plate 4 is easy to deform towards the light guide plate 61 under the action of external force, and the thickness of the air film between the deformed cover plate 4 and the light guide plate 61 becomes small or even zero (smaller than the wave train length), so that even if the thicker frame glue 3 is adopted, the color newton rings at the deformation position may not be blocked.

In some embodiments, the frame-attaching gap 5 is further increased to ensure that the frame-attaching gap 5 (air film thickness) between the cover plate 4 and the light guide plate 61 is larger than the wave train length when the cover plate 4 is in the maximum deformation state, which can also be known by the above principle about the generation of color newton rings, so that the generation of color newton rings can be avoided. However, the manner of increasing the frame-attaching gap 5 increases the thickness of the display module, and affects the display effect of the display module, which is not beneficial to the design of the light and thin display module.

In view of this, the embodiment of the disclosure provides a display module, please refer to fig. 5 and 6, which is provided with a first microstructure layer 7, wherein the first microstructure layer 7 is disposed on a side of the cover plate 4 facing the light guide plate 61, and has a plurality of first microstructures 71 at least in a frame glue space surrounded by the frame glue 3. The first microstructures 71 in the first microstructure layer 7 make the side surface of the first microstructure layer 7 near the light guide plate 61 show a variation trend of uneven height relative to the cover plate 4.

Herein, the side of the first microstructure layer 7 near the light guide plate 61 is defined as a microstructure layer surface 72, and the first microstructure 71 in the first microstructure layer 7 makes the microstructure layer surface 72 show a variation trend of height unevenness. The height of the microstructured layer surface 72 is the distance of a point in the microstructured layer surface 72 relative to the cover plate 4, i.e., the height of the point, relative to the cover plate 4.

Fig. 7 is a block diagram of the light guide plate and the deformed cover plate in fig. 5, and as shown in fig. 7, when the cover plate 4 is deformed toward the light guide plate 61, the first microstructure layer 7 at the deformed position may be close to the light guide plate 61, and may even contact with the light guide plate 61.

When the minimum air film thickness between the microstructure layer surface 72 of the first microstructure layer 7 and the light guide plate 61 is greater than the wave train length, occurrence of interference can be avoided, thereby avoiding occurrence of color newton rings.

When the microstructure layer surface 72 of the first microstructure layer 7 contacts the light guide plate 61 at the deformed position, or when the minimum air film thickness between the microstructure layer surface 72 and the light guide plate 61 is smaller than the wave train length, film interference may occur at the deformed position.

Taking the example that the surface 72 of the microstructure layer is in contact with the light guide plate 61 at the deformation position shown in fig. 7, after the surface 72 of the microstructure layer is in contact with the light guide plate 61, the thickness of the air film (air GAP) around the contact position, that is, the distance between the light guide plate 61 and the surface 72 of the microstructure layer, and the surface 72 of the microstructure layer with uneven height makes the thickness of the air film around the contact position also show a variation trend of different magnitudes.

The thickness of the air film around the contact position shows different change trends, on one hand, the thickness of the film at the same distance from the contact position is inconsistent, so that the optical path difference is changed, and the condition of equal thickness interference is destroyed. On the other hand, at the same distance from the contact location, the uneven microstructured layer surface 72 may have locations with an air film thickness greater than the wave train length and locations with an air film thickness no greater than the wave train length; color Newton rings can be avoided being generated at the position where the thickness of the air film is larger than the wave train length; where the air film thickness is no greater than the wave train length, interference may occur, and color newton rings (i.e., rainbow veins) may be generated; that is, the first microstructure layer 7 is designed such that generation of rainbow patterns is hindered in a partial region.

On the other hand, in the case where interference occurs to generate color newton rings, the design of the first microstructure layer 7 may also disturb the extending direction of the interference circle in the color newton rings.

Fig. 8 is a diagram showing the effect of a protruding structure on an interference ring according to some embodiments, in which fig. 8 is a lower diagram showing an example of the protruding structure, and in which fig. 8 is an upper diagram showing an example of the protruding structure, the interference ring is protruded outwards at a position of the protruding structure due to the effect of the protruding structure, and herein outwards means a direction away from the center of a color newton ring, as can be seen in fig. 8.

Fig. 9 is a diagram showing an effect of a concave structure on an interference ring according to some embodiments, in which fig. 9 is a lower diagram illustrating an example of the concave structure, and in which fig. 9 is an upper diagram illustrating an interference ring generated by the concave structure illustrated in the lower diagram, it can be seen from fig. 9 that, due to the effect of the concave structure, the interference ring protrudes inward at a location where the concave structure is located, where inward refers to a direction approaching a center of a color newton ring.

The microstructured layer surface 72 exhibits a varying trend in height, i.e. the first microstructured layer 7 comprises protruding structures and recessed structures on the side facing the light guide plate 61. Based on the principle shown in fig. 8 and 9, the microstructure layer surface 72 adopts an uneven extension design, so that the interference ring in the color newton ring may protrude outwards at some positions and protrude inwards at some positions; thereby disturbing the extending direction of the interference circle among the color newton rings. The outward protruding part and the inward protruding part of the interference ring can be overlapped with other polar interference rings, and as the interference rings of different polar times have different colors, when the interference rings of different polar times are overlapped, namely, the overlapping of different colors can realize color mixing, the mixed colors become or tend to be white, thereby improving and even eliminating the color Newton rings.

As can be seen from the above principle of improving the color newton rings of the first microstructure layer 7, in the display module provided in the embodiment of the disclosure, the plurality of first microstructures 71 are provided to form the high-low fluctuation microstructure layer surface 72, so that when the color newton rings occur, some positions interfere with each other, and some positions do not interfere with each other; thereby impeding the generation of color newton rings in a partial region.

In addition, at the position where the color Newton rings are generated, the interference ring protrudes inwards at the position where the interference ring is located, and protrudes outwards at the position where the interference ring is located; thereby disturbing the extending direction of the interference ring of the color Newton ring generating area, and the interference ring protruding outwards and protruding outwards can be overlapped with other polar interference rings to realize color mixing, so that the color Newton ring is displayed as white or tends to be white; thereby improving or even eliminating color newton rings.

Therefore, in the display module provided in the embodiment of the present disclosure, by adopting the first microstructure layer 7 having the plurality of first microstructures 71, an effect of improving or even eliminating color newton rings can be achieved.

In addition, the structural features of the height fluctuation of the surface 72 of the microstructure layer, so that the light guide plate 61 and the cover plate 4 are not completely close to each other when in contact, so as to avoid vacuum adsorption, and thus avoid the problem that the external force light guide plate 61 and the cover plate 4 cannot be separated after external force is pressed, and color newton rings (rainbow lines) cannot be eliminated.

Furthermore, the first microstructure layer 7 can improve and even eliminate the color newton rings, so that the frame-attaching gap 5 can be properly reduced in some situations, which is beneficial to the design of light and thin display modules.

As can be seen from the above description of the principle of the effect of the surface 72 of the microstructure layer on the color newton ring, the uneven surface 72 of the first microstructure layer 7 affects the improvement effect of the color newton ring, and the type, shape and size of the first microstructure 71 in the first microstructure layer 7 are related to the variation trend of the surface 72 of the microstructure layer, that is, affects the improvement effect of the color newton ring.

As shown in fig. 10, the first microstructures 71 in the first microstructure layer 7 may be generally classified into two types, i.e., protruding microstructures 711 and recessed microstructures 712, where the protruding microstructures 711 are protruding microstructures toward the light guide plate 61, and the recessed microstructures 712 are recessed microstructures along a direction away from the light guide plate 61, i.e., recessed groove structures.

The first microstructures 71 in the first microstructure layer 7 may be protruding microstructures 711, concave microstructures 712, or some protruding microstructures 711 and some concave microstructures 712. That is, the convex microstructures 711 and the concave microstructures 712 are used in the first microstructure layer 7.

The mixed design of the protruding microstructures 711 and the recessed microstructures 712 can increase the height variation of the microstructure layer surface 72 in the first microstructure layer 7 compared to the single use of the protruding microstructures 711 and the recessed microstructures 712, and the greater height variation of the microstructure layer surface 72 can make the thickness of the air film at more positions greater than the wave train length when the microstructure layer surface 72 contacts the light guide plate 61 in combination with the above-mentioned generation and improvement principle of color newton rings, thereby preventing the occurrence of light interference in more regions and being beneficial to improving and even eliminating color newton rings.

The first microstructures 71 in the first microstructure layer 7 may be any three-dimensional structure, for example, may be a three-dimensional structure with a regular three-dimensional shape or may be a three-dimensional structure with an irregular three-dimensional shape; wherein the regular solid shape can be spherical, hemispherical, pyramid or cone. For the protruding microstructures 711, the three-dimensional shape of the first microstructures 71 is a structure shape protruding toward the light guide plate 61; for the concave microstructure 712, the three-dimensional shape of the first microstructure 71 is a concave groove shape concave in a direction away from the light guide plate 61.

The first microstructures 71 of different types and different shapes in the first microstructure layer 7 make the microstructure layer surface 72 have different high-low variation tendencies, and the size of the first microstructures 71 is also a factor affecting the high-low variation tendencies of the microstructure layer surface 72, especially affecting the high-low variation amplitude. However, since the first microstructure 71 may be a three-dimensional structure of any shape, the size of the first microstructure 71 is generally limited by a unified standard; thus, the appropriate dimensions may be selected as a measure of the size according to the different three-dimensional shapes, different types of first microstructures 71.

For example, in some embodiments, the first microstructures 71 may employ volume as a sizing parameter, where a larger volume of a first microstructure 71 is larger than a smaller volume of a first microstructure 71 when the volume of one first microstructure 71 is larger than the volume of another first microstructure 71.

For another example, in other embodiments, the first microstructures 71 may use the height relative to the cover plate 4 as a sizing parameter. The first microstructures 71 have a maximum height and a minimum height with respect to the cover plate 4, and the difference between the maximum height and the minimum height is the difference in height of the first microstructures 71 with respect to the cover plate 4.

Taking the embodiment shown in fig. 10 as an example, the maximum height of the first microstructure 71 with respect to the cover plate 4 is shown as H1 in the figure, and the minimum height of the first microstructure 71 with respect to the cover plate 4 is shown as H2 in the figure; the height difference Δh of the first microstructure 71 with respect to the cover plate 4 is H1-H2.

For the first microstructure 71, at least one of the minimum height H2, the maximum height H1, and the height difference Δh may be employed as a parameter for measuring the size. For example, between the two first microstructures 21, when the minimum height H2 is equal, it can be considered that the larger one of the maximum height H1 and the height difference Δ is larger; when the maximum heights H1 are equal, it can be considered that the one having the larger height difference Δ and the minimum height H2 is larger; when the maximum height H1 and the minimum height H2 are not equal, it is considered that the larger one of the height differences Δ is larger.

For another example, in other embodiments, the first microstructure 71 may also use a maximum dimension as a parameter for sizing, where the maximum dimension is the maximum value of the linear distance between any two points in the first microstructure 71; the height difference Δh above is also possible as an example of the maximum size.

The above description of the volume, the minimum height H2, the maximum height H1, the height difference Δh, and the maximum size for measuring the size of the first microstructures 71 is merely an exemplary illustration, and the embodiment of the present disclosure is not limited thereto.

Although the larger-sized first microstructures 71 can increase the variation of the height of the surface 72 of the microstructure layer, which is beneficial to improving the improvement effect of the color newton rings, the display effect of the display module is affected by the oversized first microstructures 71. Thus, the size (e.g., height differences and/or maximum dimensions) of first microstructures 71 are typically on the order of hundred nanometers and less based on a combination of display effects and color newton rings. That is, the first microstructure 71 is typically sized to be much smaller than the wave train length based on a comprehensive consideration between ensuring the display effect and improving the color newton rings.

In some embodiments, the first microstructures 71 in the first microstructure layer 7 are the same type, size and shape, as are the first height, second height and height difference relative to the cover plate 4 between the first microstructures 71 of the same size and shape.

Illustratively, fig. 11 is a block diagram of a first microstructure layer according to some embodiments, and in the implementation shown in fig. 11, the first microstructure layer 7 includes a plurality of first microstructures 71 having the same size, the first microstructures 71 are protruding microstructures, each having a cone shape, and the first heights, the second heights, and the height differences of the first microstructures 71 with respect to the cover plate 4 are equal.

So designed, the first microstructure 71 of the first microstructure layer 7 is such that the first microstructure 71 has a highly undulating microstructure layer surface 72, which microstructure layer surface 72 is capable of improving or even eliminating color newton rings due to deformation of the cover plate 4; the microstructure layer surface 72 can prevent the light guide plate 61 and the cover plate 4 from being completely close to each other when contacting, so that the problem that the light guide plate 61 and the cover plate 4 cannot be separated after external force is removed and color newton rings (rainbow lines) cannot be eliminated is avoided.

In a further possible embodiment, at least one of the type, size and shape of the first microstructures 7 in the first microstructure layer 7 is different, such that the relief trend of the microstructure layer surface 72 of the first microstructure layer 7 exhibits an irregular character by employing different types, different shapes and/or different sizes of the first microstructures 71 in the first microstructure layer 7. As can be seen from the above-mentioned improved principle of the microstructure layer surface 72 on the color newton ring, the irregular change characteristic of the microstructure layer surface can cause the direction change of the color newton ring to also show irregular change, so as to advantageously improve the improvement effect on the color newton ring. And the surface 72 of the microstructure layer makes the light guide plate 61 and the cover plate 4 not be completely close to each other when contacting, thereby avoiding the problem that the light guide plate 61 and the cover plate 4 cannot be separated after external force is removed and color newton rings (rainbow lines) cannot be eliminated.

Illustratively, fig. 12 is a block diagram of another first microstructure layer 7 according to some embodiments, in the implementation shown in fig. 12, the first microstructures 71 of the first microstructure layer 7 are both protruding microstructures 711 and are both conical in shape; however, the height difference of the first microstructures 71 in the first microstructure layer 7 with respect to the cover plate 4 is different, i.e. the size of the first microstructures 71 in the first microstructure layer 7 is different. So designed, the first microstructures 71 of the first microstructure layer 7 make the microstructure layer surface 72 show different variation trends, and the variation of the height of the microstructure layer surface 72 shows irregular variation trends.

In another example, fig. 13 is a structural diagram of another first microstructure layer 7 according to some embodiments, and in the implementation shown in fig. 13, the first microstructures 71 of the first microstructure layer 7 are all convex microstructures 711, but have different shapes and sizes, a part of the first microstructures 71 are conical, and a part of the first microstructures 71 are hemispherical. So designed, the first microstructures 71 of the first microstructure layer 7 make the microstructure layer surface 72 show different variation trends, and the variation of the height of the microstructure layer surface 72 shows more irregular variation trends.

In yet another example, fig. 14 is a block diagram of another first microstructure layer 7 according to some embodiments, and in the implementation shown in fig. 14, part of the first microstructures 71 of the first microstructure layer 7 are protruding microstructures 711, and part of the first microstructures 71 are concave microstructures 712, but are all conical in shape and the same size. So designed, the first microstructures 71 of the first microstructure layer 7 make the microstructure layer surface 72 show different variation tendencies, and the microstructure layer surface 72 has larger variation amplitude.

The first microstructure layer 7 may implement different trend changes by changing at least one of the type, the type proportion, the size and the shape of the first microstructure 71, which will not be described in detail herein.

In some embodiments, the first microstructures 71 are arranged continuously or near continuously at least in a first portion, wherein the first portion is a portion of the first microstructure layer 7 located in the frame glue space, i.e. a portion surrounded by the frame glue 3. The continuous arrangement herein refers to adjacent first microstructures 71, whether convex or concave, the adjacent two being connected; thereby forming a continuous height variation at the microstructured layer surface 72 of the first microstructured layer 7. By the design, the improvement range of the first microstructure layer 7 on the color Newton rings can be ensured, and a good improvement effect on the color Newton rings can be realized no matter how the deformation position of the cover plate 4 is at the position of the cover plate 4.

It should be noted that the near continuous arrangement here means that the discontinuous state is allowed to be broken between the adjacent first microstructures 71 of the partial region, but the area ratio of the discontinuous arrangement portion should not exceed 10% in the whole first portion.

In addition, as the deformation position of the cover plate 4 after being stressed usually occurs at the central position of the cover plate 4 far away from the frame glue 3, and the cover plate 4 close to the frame glue 3 is supported by the frame glue 3, the deformation amplitude is smaller, and the possibility that the color Newton rings are deformed at the edge position of the frame glue 3 by the cover plate 4 is smaller due to the smaller deformation amplitude; thus, in some possible embodiments, the first microstructure layer 7 may be provided with the first microstructure 71 only in a region of a set distance with reference to the center of the surrounding region of the frame glue 3. Further, the closer the first microstructure layer 7 is to the frame glue 3, the smaller the distribution density.

In other embodiments, the first microstructure layer 7 further comprises a second portion in contact with the frame glue 3, the second portion being connected to the first portion, and the first microstructure being also provided on the second portion.

Based on the above description, the first microstructure layer 7 in some embodiments is a specific example of an atomized layer, and the haze may be used to measure the characteristics of the first microstructures 71 in the first microstructure layer 7. For example, the greater the haze of the first microstructure layer 7, the greater the number of first microstructures 71, the greater the distribution density, and the more irregular the height variation of the microstructure layer surface 72 formed by the first microstructures 71. From the above description of the principle of improvement of color newton rings with respect to the microstructured layer surface 72, it is known that the haze of the first microstructured layer 7 is positively correlated with the effect of improvement of color newton rings.

However, the larger haze of the first microstructure layer 7 may affect the display effect of the display device. Fig. 15 is a graph of haze of the first microstructure layer versus contrast of the display module, as shown in fig. 15, with haze on the abscissa and impact on contrast of the display module on the ordinate, and as can be seen from the graph, the higher the haze of the first microstructure layer 7, the greater the impact on display contrast, and thus the greater the impact on image clarity. That is, the haze of the first microstructure layer 7 is inversely related to the display effect.

Thus, the haze of the first microstructured layer 7 is generally not more than 10% in consideration of improving color newton rings and ensuring display clarity. For example, in a specific example, the haze of the first microstructured layer 7 is 4%.

As an embodiment of the first microstructure layer 7, an Anti-glare (AG) film may be selected as the first microstructure layer 7, as shown in fig. 16, the AG film 8 includes a glue layer 81, a substrate 82, and an atomization functional layer 83, the atomization functional layer 83 is disposed on one side of the substrate 82, and the glue layer 81 is disposed on one side of the substrate 82 away from the atomization functional layer 83. The atomization functional layer 83 is subjected to AG treatment to form an uneven microstructure, and the AG treatment may be coating, spraying, embossing, or the like.

Taking coating as an example, coating the substrate 82 with the atomized particles 84, leaving the atomized particles 84 therein after the coating is dried to form an uneven microstructure; the refractive index of the coating is similar to that of the substrate 82 and therefore does not affect the optical effect.

The atomized particles 84 for forming the rugged microstructure in the AG film 8 are a specific example of the first microstructure 71, and the size of the atomized particles 84 is hundred nanometers or less, which is much smaller than the wave train length. As is apparent from the above description, when the AG film 8 is in contact with the light guide plate 61, some areas of the atomized particles 84 change the optical path difference even though they do not hinder the occurrence of light interference, thereby changing the direction of the interference ring to improve or even eliminate the color newton ring.

The AG film 8 can be fully attached to the touch panel 41 or the cover glass 42 near the light guide plate 61 through the adhesive layer 81, and generally the refractive index of the adhesive layer 81 is close to that of glass, so that the optical effect is not affected.

Haze is an important parameter of the AG film 8, and it is known from the above description that haze of the AG film 8 is positively correlated with the improvement effect on color newton rings and inversely correlated with the display effect, and therefore, haze of the AG film 8 is generally not more than 10% in consideration of comprehensively improving color newton rings and ensuring display clarity.

As another embodiment of the first microstructure layer 7, please refer to fig. 17, the first microstructure layer 7 may also be an atomized layer 9 formed on the cover plate 4, where the atomized layer 9 may be formed by AG treatment on the cover plate 4, and AG treatment methods include spraying, etching, sputtering, etching, and the like.

In another embodiment, the atomized layer 9 may be formed by forming a base layer on the cover plate 4 and then AG-treating the base layer.

In some embodiments, referring to fig. 18, in order to reduce the reflectivity of the microstructure layer surface 72 of the first microstructure layer 7 to air, so as to achieve the purpose of reducing the specular reflection, an anti-reflection (AR) layer 10 is fabricated on the microstructure layer surface 72, and the AR layer 10 may be fabricated by magnetron sputtering or vacuum plating.

In some embodiments, referring to fig. 19, the display module further includes a second microstructure layer 43, where the second microstructure layer 43 is disposed on a side of the first microstructure layer 7 away from the front light module; for example, the second microstructure layer 43 may be directly disposed on a side of the first microstructure layer 7 away from the light guide plate 61, may be disposed between the touch panel 41 and the cover glass 42, or may be disposed on a side of the cover glass 42 away from the touch panel 41.

In the embodiment shown in fig. 19, the second microstructure layer 43 is provided between the touch panel 41 and the cover glass 42.

The second microstructure layer 43 is an atomized layer having a haze higher than that of the first microstructure layer 7, and the atomized layer having a higher haze can shield the already generated colored newton rings to some extent. Illustratively, the haze of the second microstructured layer 43 is 20% or more.

As shown in fig. 20, in some products, in order to improve the optical performance of the light guide plate 61, a light adjusting structure 613 is disposed on the light guide plate 61, where the light adjusting structure 613 may be a protruding structure protruding toward the cover plate 4 relative to the second side 612 of the light guide plate 61, may be a concave structure that is concave along a direction away from the cover plate 4, or may be a dot on the light guide plate 61. Optionally, the distribution density of the first microstructure layer 7 is greater than that of the dimming structure 613, so that the purpose of improving color newton rings can be achieved by designing the first microstructure layer so that the first microstructure layer 7 can have a better supporting effect on the cover plate 4 when the cover plate 4 deforms to contact with the light guide plate 61.

Embodiments of the present disclosure also provide an electronic device that is a product having an image (including: still image or moving image, where the moving image may be video) display function, for example, the electronic device may be: any one of a display, a mobile phone, a notebook computer, a tablet computer, personal wearable equipment, a billboard, a digital photo frame, an electronic reader and the like.

The foregoing is merely a specific embodiment of the disclosure, but the protection scope of the disclosure is not limited thereto, and any person skilled in the art who is skilled in the art will recognize that changes or substitutions are within the technical scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. The display module is characterized by comprising a reflective display panel, a front light module and a cover plate; the front light module is arranged on the display side of the reflective display panel, and the cover plate is attached to one side, far away from the reflective display panel, of the front light module through a frame glue frame;

2. The display module of claim 1, wherein at least one first microstructure of the plurality of first microstructures is different from another first microstructure in a stereoscopic shape and/or size.

3. The display module of claim 1, wherein at least one first microstructure of the plurality of first microstructures is not equal to another first microstructure for a maximum height, a minimum height, and/or a difference in height of the first microstructures relative to the cover plate.

4. The display module of claim 1, wherein a maximum dimension of at least one first microstructure is on the order of hundred nanometers or less, the maximum dimension being a maximum value of a linear distance between any two points in the first microstructure.

5. The display module of claim 1, wherein the first microstructure is a convex structure that protrudes toward the front light module or a concave structure that is concave in a direction away from the front light module;

6. The display module of any one of claims 1-5, wherein the plurality of first microstructures are distributed continuously or near continuously.

7. The display module of claim 6, wherein the front light module comprises a light guide plate, one side of the light guide plate is attached to the reflective display panel, and the other side of the light guide plate is connected with the cover plate through the frame glue;

8. The display module of claim 1, wherein the first microstructured layer is an atomized layer having a haze of less than or equal to 10%.

9. The display module of claim 8, further comprising a second microstructured layer disposed on a side of the first microstructured layer remote from the front light module, the second microstructured layer being an atomized layer having a haze greater than a haze of the first microstructured layer.

10. The display module of claim 9, wherein the second microstructured layer has a haze of 20% or more.

11. The display module of any one of claims 8-10, wherein the first microstructured layer is an antiglare film affixed to the cover plate, the antiglare film comprising a substrate and a plurality of atomized particles disposed on the substrate; the substrate is attached to the cover plate, and the plurality of atomized particles form the plurality of first microstructures.

12. The display module of any one of claims 8-10, wherein the first microstructured layer is an atomized layer fabricated on the cover plate.

13. The display module of claim 1, further comprising an anti-reflective layer disposed on a side of the first microstructured layer remote from the cover plate.

14. The display module of claim 1, wherein the cover plate is a touch panel or/and cover glass.

15. An electronic device comprising the display module of any one of claims 1-14.