Magnetic electronic photo paper

Abstract

The utility model provides a kind of magnetic suction electronic photo paper, including shell structure and the electronic display screen being arranged in shell, shell structure includes the first shell and the second shell of cover, the inside of second shell is below electronic display screen Multiple magnetic suction grooves are set, and magnetic suction element is set in magnetic suction groove;The position of the bottom surface outside of second shell corresponds the magnetic force action area of magnetic suction groove, and magnetic force action area is configured to be able to enhance the magnetic attraction of magnetic suction element to external metal object.The application can conveniently be adsorbed on metal object by magnetic suction design while ensuring the internal structure of display paper is stable, expand the use scene, improve portability and fixing reliability.

Description

Technical Field

[0001] This utility model belongs to the technical field of electronic display devices, and specifically relates to a magnetic electronic photographic paper. Background Technology

[0002] With the development of electronic paper technology, electronic displays are widely used in electronic tags, e-books, and portable display devices due to their low power consumption and offline display capabilities. Existing electronic photo paper is mostly fixed to devices or stands using clips or adhesives, which is a limited method and inconvenient for easy movement or repositioning.

[0003] In the application of instant photo cameras, users often want to temporarily attach digital photo paper to metal surfaces (such as refrigerators, metal display boards, etc.) for display. However, traditional digital photo paper lacks convenient fixing methods and requires additional brackets or adhesives, which is inconvenient to use and affects the appearance.

[0004] Furthermore, the internal structure of electronic photographic paper requires high stability, especially the fixation of the electronic display screen to the circuit board. If the internal fixation is not secure, it can easily lead to display misalignment or connection failure. Although existing technologies have limit structures, they lack designs that simultaneously address both internal fixation and external adhesion.

[0005] Therefore, it is necessary to propose an electronic photographic paper that can both ensure the stability of internal components and be easily adsorbed onto metal surfaces. Utility Model Content

[0006] In order to solve the above-mentioned problems in the prior art, this application provides a magnetic electronic photographic paper to solve the above-mentioned technical defects.

[0007] According to a first aspect of the present invention, a magnetic electronic photographic paper is provided, comprising a housing structure and an electronic display screen disposed within the housing. The housing structure includes a first housing and a second housing that are covered together. The inner side of the second housing has a plurality of magnetic slots below the electronic display screen, and magnetic elements are disposed in the magnetic slots. A magnetic force action area is provided on the outer side of the bottom surface of the second housing corresponding to the position of the magnetic slots. The magnetic force action area is configured to enhance the magnetic attraction of the magnetic elements to external metal objects.

[0008] By adopting the above technical solution, the electronic display screen inside the shell structure is adsorbed and fixed, which helps to maintain the stability of the internal structure of the electronic photo paper; at the same time, it effectively enhances the penetration and intensity of the magnetic field generated by the magnetic attraction element on the external metal surface, so that the electronic photo paper can be directly and firmly adsorbed to the metal surface without the need for any external fixing device.

[0009] In a specific embodiment, the magnetic slots are evenly distributed at multiple points.

[0010] In the above technical solution, multiple evenly distributed magnetic attraction points together form a stable magnetic attraction surface, which allows the attraction force to be evenly distributed on the entire back of the electronic photo paper, significantly enhancing the product's anti-slip and anti-flipping ability on vertical metal surfaces and improving the stability of the attraction; at the same time, it also allows the attraction force to be evenly distributed on the back of the electronic display screen, significantly improving the ability to attract and fix the electronic display screen.

[0011] In a specific embodiment, there are four magnetic slots, which are evenly distributed in a four-point pattern.

[0012] By adopting the above technical solution, the four-point distribution achieves full magnetic field coverage of the back of the electronic photo paper with the fewest magnetic elements. While ensuring the reliability of adsorption, it optimizes cost and structural complexity. In addition, the four-point distribution also facilitates precise positioning and assembly during production, improving manufacturing efficiency.

[0013] In a specific embodiment, four magnetic slots are respectively arranged near the four corners of the back of the electronic display screen, and the center line connecting the four magnetic slots forms a rectangle, the geometric center of the rectangle coincides with the geometric center of the electronic display screen.

[0014] By adopting the above technical solution, the four corners of the electronic display screen are attracted and fixed, and the geometric center of the magnetic groove coincides with the geometric center of the electronic display screen, so as to form a stable torque balance, effectively preventing the twisting and warping of the electronic display screen and ensuring the stability of the electronic display screen in the attracted state.

[0015] In a specific embodiment, there are five magnetic slots, which are evenly distributed in a five-point pattern.

[0016] By adopting the above technical solution, the five magnetic slots are evenly distributed in a five-point pattern, forming a denser magnetic attraction field network on the back of the electronic display screen. Compared with the four-point distribution, this increases the number of support points, making the adsorption force distribution more uniform and continuous. In addition, the five-point distribution enables the product to achieve better adaptive adhesion on various metal surfaces, and maintains reliable adsorption stability even on surfaces that are not completely flat.

[0017] In a specific embodiment, four of the five magnetic slots are respectively located near the four corners of the back of the electronic display screen, and the fifth magnetic slot is located at the geometric center of the electronic display screen.

[0018] By adopting the above technical solution, a composite magnetic attraction system combining corner support and center anchoring is formed. The five adsorption points together constitute a more stable adsorption plane, which greatly improves the adhesion and adsorption reliability on non-ideal flat metal surfaces.

[0019] In a specific embodiment, the magnetic force application area includes a thin-walled structure formed by locally thinning the corresponding position of the magnetic groove on the bottom surface of the second housing.

[0020] By adopting the above technical solution, the effective interaction distance between the magnetic element and the external metal surface can be effectively reduced while maintaining the integrity and strength of the overall shell structure, thereby significantly improving the adsorption force and avoiding sealing problems and structural weakening that may be caused by opening through holes.

[0021] In a specific embodiment, the magnetic force application area includes a through hole penetrating the bottom surface of the second housing; the bottom surface of the magnetic attraction element is coplanar with the inner bottom surface of the second housing, or is filled in the through hole by a magnetically conductive sealing material and in close contact with the bottom of the magnetic attraction element.

[0022] By adopting the above technical solution, the blocking effect of non-magnetic shell material on magnetic field can be reduced. When the bottom of the magnetic element is coplanar with the bottom surface of the inner side of the shell, it can ensure that the magnetic element and the metal surface reach the closest contact, significantly improving the adsorption capacity of the metal surface. The design of filling the through hole with magnetic sealing material not only maintains the lossless transmission of magnetic force, but also solves the problems of dust accumulation, moisture and weakening of structural strength that may be caused by open through holes, thus protecting the magnetic element and maintaining the integrity and sealing of the shell.

[0023] In a specific embodiment, the magnetic action area includes an auxiliary magnetic layer that adheres to the entire bottom surface or a local area of ​​the second housing.

[0024] By adopting the above technical solution, not only can magnetic elements of the same size generate stronger adsorption force, but the effective adsorption area is also expanded, so that electronic photo paper can still maintain reliable adsorption even when there are slight gaps or unevenness with the metal surface. At the same time, the auxiliary magnetic layer also plays a role in homogenizing the magnetic force distribution, avoiding local magnetic flux saturation, protecting the magnetic properties of the magnetic elements, and providing an additional protective layer for the bottom surface of the housing, thereby enhancing the product's durability and environmental adaptability.

[0025] In a specific embodiment, the auxiliary magnetic layer is a thin metal sheet whose shape and size match the bottom surface of the second housing. The thin metal sheet is fixed to the bottom surface of the second housing by means of bonding, snapping, or hot melting.

[0026] By adopting the above technical solution, not only is the efficient convergence and uniform distribution of magnetic lines of force achieved through its complete magnetic conductive area, thus improving the overall adsorption force, but also the bonding between the magnetic conductive layer and the shell is ensured by fixing methods such as bonding, snapping or hot melting, avoiding the risk of delamination during use.

[0027] In a specific embodiment, the auxiliary magnetic attraction layer includes a magnetically conductive material layer formed on the bottom surface of the second housing. The magnetically conductive material layer has a uniform thickness and its edges smoothly transition to the edges of the bottom surface of the second housing.

[0028] By adopting the above technical solution, the stable transmission of magnetic lines of force is ensured through the uniform thickness of the magnetic conductive layer, which significantly improves the magnetic attraction efficiency, and the structural durability is enhanced by the smooth transition edge design.

[0029] In a specific embodiment, the magnetic pole orientation of the magnetic elements embedded in the magnetic slot is set to be consistent.

[0030] By adopting the above technical solution, the magnetic fields generated by all magnetic elements are in the same direction, realizing the superposition effect of magnetic fields in the same direction, thereby significantly enhancing the total adsorption force of electronic photographic paper on the external metal surface.

[0031] In a specific embodiment, the top surface of the magnetic element is in direct physical contact with the back of the electronic display screen, and forms a fixed connection with the back of the electronic display screen through its own magnetic force or by bonding adhesive.

[0032] In the above technical solution, the dual fixing method of magnetic adsorption or adhesive is used to effectively prevent the electronic display screen from shifting when subjected to vibration or impact, thus ensuring the structural stability of the electronic display screen.

[0033] In a specific embodiment, a magnetic shielding sticker is applied to the top surface of each magnetic element.

[0034] By adopting the above technical solution, not only is the diffusion of the magnetic field towards the electronic display screen effectively blocked, eliminating the adverse effects that a strong magnetic field may have on the screen display performance and touch accuracy; at the same time, the magnetic shielding layer also effectively avoids electromagnetic interference that may occur between the magnetic attraction element and the metal circuit on the back of the screen, ensuring the stability of the display signal transmission.

[0035] In a specific embodiment, the magnetic attraction element includes one of sintered NdFeB permanent magnets, bonded NdFeB permanent magnets, or ferrite permanent magnets.

[0036] By adopting the above technical solutions, the optimal magnetic solutions can be provided according to the different performance requirements and cost requirements of the products.

[0037] In specific embodiments, the magnetic element is cylindrical, rectangular, or disc-shaped.

[0038] By adopting the above technical solutions, the magnetic attraction element can be designed as a cylinder, rectangle, or disc, providing the optimal magnetic force solution according to different product structure requirements.

[0039] In a specific embodiment, the depth of the magnetic groove is greater than or equal to the thickness of the magnetic element, and a limiting component is provided above or below the magnetic element. The limiting component includes an elastic gasket filled between the magnetic element and the bottom of the magnetic groove.

[0040] By adopting the above technical solution, the elastic pad not only provides stable bottom support for the magnetic element, but also effectively absorbs and buffers external impact vibrations through its elastic deformation, significantly reducing the risk of the magnetic element breaking or its magnetic properties being damaged due to force impact; at the same time, this structural design can automatically compensate for the dimensional tolerance between the magnetic element and the bottom of the slot, ensuring that components from different batches can obtain uniform preload support.

[0041] Compared with the prior art, the beneficial results of this utility model are as follows:

[0042] 1. The electronic photo paper integrates a complete magnetic fixation system, allowing users to directly attach the product to metal surfaces without any external accessories, greatly expanding the application scenarios and convenience;

[0043] 2. By optimizing the layout of the magnetic slots and coordinating with the magnetic action area, the adsorption force is maximized while maintaining the product's slim and lightweight characteristics;

[0044] 3. The design of the limit component effectively solves the stability problem of the magnetic attraction element under impact environment, and at the same time provides tolerance compensation function, which improves production yield and product consistency. Attached Figure Description

[0045] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and, together with the description, serve to explain the principles of the present invention. Other embodiments and many anticipated advantages of the embodiments will be readily recognized as they become better understood through reference to the following detailed description. Elements in the drawings are not necessarily to scale. The same reference numerals refer to corresponding similar parts.

[0046] Figure 1 An exploded view of a magnetic electronic photographic paper according to an embodiment of this utility model;

[0047] Figure 2 This is an assembly diagram of a magnetic electronic photographic paper according to an embodiment of the present invention.

[0048] The meanings of the numbers in the diagram are as follows: 01-First housing, 02-Second housing, 03-Display screen, 04-Circuit board, 05-Magnetic slot, 06-Magnetic assembly, 07-Magnetic action area. Detailed Implementation

[0049] In the following detailed description, reference is made to the accompanying drawings, which form part of the detailed description and illustrate illustrative specific embodiments in which the present invention may be practiced. In this regard, directional terms such as “top,” “bottom,” “left,” “right,” “up,” “down,” etc., are used with reference to the orientation of the described figures. Because components of the embodiments can be positioned in several different orientations, directional terms are used for illustrative purposes and are by no means limiting. It should be understood that other embodiments may be utilized or logical changes may be made without departing from the scope of the present invention. Therefore, the following detailed description should not be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

[0050] Figure 1 An exploded view of a magnetic electronic photographic paper according to an embodiment of the present invention is shown. Figure 1 As shown, a magnetic electronic photographic paper includes a first housing 01, a second housing 02, and an electronic display screen 03 disposed within the housings. Multiple magnetic slots 05 are formed on the inner side of the second housing 02 below the mounting position of the electronic display screen 03, and magnetic elements 06 are disposed within the magnetic slots 05. A magnetic force application area 07 is provided on the outer bottom surface of the second housing 02 corresponding to the positions of the magnetic slots 05. The magnetic force application area 07 is configured to enhance the magnetic attraction force of the magnetic elements 06 to external metal objects. By adopting the above technical solution, the electronic display screen 03 inside the housing is attracted and fixed by the magnetic elements 06 disposed at corresponding positions on the inner side of the second housing 02, preventing the magnetic electronic photographic paper from shaking or shifting during production and use, thus helping to maintain the stability of the internal structure of the electronic photographic paper. Simultaneously, the magnetic force application area 07 effectively enhances the penetration and intensity of the magnetic field generated by the magnetic elements 06 to the external metal surface, allowing the electronic photographic paper to achieve direct and firm adhesion to the metal surface without the need for any external fixing device.

[0051] In a specific embodiment, the magnetic slots 05 are evenly distributed in a multi-point manner. In this example, the magnetic slots 05 are evenly distributed in a four-point manner. The four magnetic slots 05 are respectively located at the corresponding positions of the four corners of the back of the electronic display screen 03 inside the second housing 02, and the center line connecting the four magnetic slots 05 forms a rectangle, the geometric center of which coincides with the geometric center of the electronic display screen 03. By adopting the above technical solution, the four corners of the electronic display screen 03 are attracted and fixed, and the geometric center of the magnetic slots 05 coincides with the geometric center of the electronic display screen 03, thus forming a stable torque balance, effectively preventing the twisting and warping of the electronic display screen 03, and ensuring the stability of the electronic display screen 03 in the attracted state.

[0052] In a specific embodiment, the number of magnetic slots 05 can also be set to five, with the magnetic slots 05 evenly distributed in a five-point pattern. Four magnetic slots 05 are respectively located at the four corners of the back of the electronic display screen 03 inside the second housing 02, and the fifth magnetic slot 05 is located at the geometric center of the electronic display screen 03 inside the second housing 02. By adopting the above technical solution, a composite magnetic attraction system combining corner support and center anchoring is formed. The five attraction points together constitute a more stable attraction plane, significantly improving the adhesion and attraction reliability on non-ideal flat metal surfaces.

[0053] In specific embodiments, in addition to four-point and five-point distribution, the magnetic slots 05 can also be distributed in six-point, seven-point, and other forms. The number and distribution position of the magnetic slots 05 are designed according to the size, shape, and weight of the electronic display screen 03.

[0054] In a specific embodiment, the magnetic action area 07 includes a thin-walled structure formed by locally thinning the corresponding position of the magnetic attraction groove on the bottom surface of the second housing 02. By adopting the above technical solution, the effective action distance between the magnetic attraction element 06 and the external metal surface can be effectively reduced while maintaining the overall structural integrity and strength of the second housing 02, thereby significantly improving the attraction force. At the same time, it avoids sealing problems and structural weakening that may be caused by opening through holes.

[0055] In a specific embodiment, the magnetic force application area 07 includes a through hole penetrating the bottom surface of the second housing 02; the bottom surface of the magnetic attraction element 06 is coplanar with the inner bottom surface of the second housing 02, or is filled in the through hole by a magnetically conductive sealing material and in close contact with the bottom of the magnetic attraction element 06. The area of ​​the through hole should be smaller than the bottom area of ​​the magnetic attraction element 06, and the area should not be too large or too small. Consideration should be given to the following: an excessively large through hole area would weaken the structural strength and expose too much of the internal magnetic attraction element 06; an excessively small through hole area would result in the housing material having an excessively strong blocking effect on the magnetic field, leading to insufficient attraction force of the magnetic attraction element 06 for external metals. Suitable magnetically conductive sealing materials include epoxy resin, silicone rubber, or polyurethane sealant doped with soft magnetic metal powder (such as carbonyl iron powder, reduced iron powder, nickel powder, or permalloy powder).

[0056] By adopting the above technical solution, the blocking effect of non-magnetic shell material on magnetic field can be reduced. When the bottom of magnetic element 06 is coplanar with the inner bottom surface of second shell 02, it can ensure that magnetic element 06 and external metal surface reach the closest contact, and improve the adsorption capacity of metal surface. The design of filling the through hole with magnetic sealing material not only maintains the lossless transmission of magnetic force, but also solves the problems of dust accumulation, moisture and weakening of structural strength that may be caused by open through hole, thus protecting magnetic element 06 and maintaining the integrity and sealing of second shell 02.

[0057] In a specific embodiment, the magnetic force application area 07 includes an auxiliary magnetic attraction layer that adheres to the entire bottom surface or a partial area of ​​the second housing 02. In this example, the auxiliary magnetic attraction layer is a thin metal sheet whose shape and size match the bottom surface of the second housing 02. The metal sheet is fixed to the bottom surface of the second housing 02 by bonding, snapping, or heat fusion. By adopting the above technical solution, not only can the magnetic attraction element 06 of the same size generate a stronger attraction force, but the effective attraction area is also expanded, so that the electronic photo paper can still maintain reliable attraction even when there are slight gaps or unevenness with the metal surface. At the same time, the auxiliary magnetic attraction layer also plays a role in homogenizing the magnetic force distribution, avoiding local magnetic flux saturation, protecting the magnetic properties of the magnetic attraction element, and providing an additional protective layer for the bottom surface of the housing, thereby enhancing the product's durability and environmental adaptability.

[0058] In a specific embodiment, the auxiliary magnetic attraction layer is a magnetically conductive material layer formed on the bottom surface of the second housing 02 through electroplating, spraying, or in-mold injection molding. The magnetically conductive material layer has a uniform thickness and its edges smoothly transition to the edges of the bottom surface of the second housing 02. By adopting the above technical solution, the integrated molding of the magnetically conductive material layer and the housing structure is achieved. This ensures stable transmission of magnetic lines of force through the uniform thickness of the magnetically conductive layer, significantly improving magnetic attraction efficiency, while the smooth edge design enhances structural durability.

[0059] In a specific embodiment, the magnetic poles of the magnetic elements 06 embedded in the magnetic groove 05 are all set to face the same direction. By adopting the above technical solution, the magnetic fields generated by all magnetic elements 06 are in the same direction, realizing the superposition effect of magnetic fields in the same direction, thereby significantly enhancing the total adsorption force of the electronic photographic paper on the external metal surface.

[0060] In a specific embodiment, the top surface of the magnetic element 06 is in direct physical contact with the back of the electronic display screen 03, and forms a fixed connection with the back of the electronic display screen 03 through its own magnetism or by bonding adhesive. Optional adhesives include epoxy resin structural adhesive, thermally conductive silicone, UV-curable adhesive, and acrylic pressure-sensitive adhesive. Epoxy resin structural adhesive is suitable for fixing applications requiring high bonding strength and long-term reliability; thermally conductive silicone is specifically designed to solve screen heat dissipation problems, significantly improving heat dissipation efficiency while bonding; UV-curable adhesive is particularly suitable for automated large-scale production, enabling millimeter-level precise coating and second-level rapid curing; and acrylic pressure-sensitive adhesive facilitates position adjustment during production debugging and rework. These adhesives can be used individually or in combination to meet the reliability requirements of different production processes and usage environments. In the above technical solution, the dual fixing method of magnetic adsorption or bonding adhesive effectively prevents the electronic display screen 03 from shifting when subjected to vibration or impact, ensuring the structural stability of the electronic display screen 03.

[0061] In specific embodiments, after the magnetic element 06 is installed into the magnetic slot 05, a magnetic shielding sticker should be applied to its top surface, or the magnetic element 06 should be fitted with a magnetic shielding sticker before installation, with the side with the magnetic shielding sticker facing upwards when installed into the magnetic slot 05. By adopting the above technical solution, not only is the diffusion of the magnetic field towards the electronic display screen 03 effectively blocked, eliminating the adverse effects that a strong magnetic field may have on the display performance and touch accuracy of the electronic display screen 03, but the magnetic shielding sticker also effectively avoids electromagnetic interference that may occur between the magnetic element 06 and the metal circuitry on the back of the electronic display screen 03, ensuring the stability of the display signal transmission.

[0062] In a specific embodiment, the magnetic element 06 includes one of sintered NdFeB permanent magnets, bonded NdFeB permanent magnets, or ferrite permanent magnets. Sintered NdFeB permanent magnets, with their extremely high magnetic energy product, can provide the strongest attraction force within a limited space, making them particularly suitable for scenarios requiring both thinness and strong magnetic attraction. Bonded NdFeB permanent magnets maintain high magnetic performance while possessing superior dimensional accuracy and the ability to form complex shapes, facilitating precise assembly with the housing. Ferrite permanent magnets, on the other hand, exhibit excellent temperature stability and corrosion resistance.

[0063] In specific embodiments, the magnetic attracting element 06 is cylindrical, rectangular, or disc-shaped. Among them, the cylindrical magnetic attracting element 06 has the best magnetic energy utilization efficiency and is easy to install and position; the rectangular magnetic attracting element 06 can be closely arranged to maximize the magnetic attracting area and adsorption stability; and the disc-shaped magnetic attracting element 06 provides a balanced magnetic force distribution in thickness-limited scenarios.

[0064] In a specific embodiment, the depth of the magnetic groove 05 is greater than or equal to the thickness of the magnetic element 06, and a limiting component is provided above or below the magnetic element 06. The limiting component is an elastic gasket filled between the magnetic element and the bottom of the magnetic groove 05.

[0065] By adopting the above technical solution, the elastic pad not only provides a stable bottom support for the magnetic element 06, but also effectively absorbs and buffers the impact vibration from the outside through its elastic deformation, which significantly reduces the risk of the magnetic element 06 breaking or its magnetic properties being damaged due to force impact; at the same time, this structural design can automatically compensate for the dimensional tolerance between the magnetic element 06 and the bottom of the magnetic groove 05, ensuring that components from different batches can obtain uniform preload support.

[0066] In a specific embodiment, the rear end portion inside the second housing 02 also forms a mounting groove adapted to the structural dimensions of the circuit board 04. The circuit board 04 is fixedly mounted inside the rear end of the second housing 02 by being set in the mounting groove. The electronic display screen 03 is connected to the circuit board 04 via an FPC cable. In the above technical solution, the circuit board 04 serves as the control core of the entire electronic photographic paper. It receives external image data through the gold finger interface and performs decoding processing to drive the electronic display screen 03 to complete image display. At the same time, it integrates a power management module to achieve efficient energy consumption control, ensuring that the image is displayed continuously after power failure. Its built-in storage unit can cache image data and control screen refresh and content erasure by generating precise drive timing. Ultimately, it upgrades the passive display of traditional photographic paper into an intelligent display system integrating image processing, power management, display driving, and storage control. This is the key technological foundation for realizing instant display, erasable and rewritable content, and reusability.

[0067] Figure 2 An assembly diagram of a magnetic electronic photographic paper according to an embodiment of the present invention is shown. (As shown) Figure 2 As shown, the first housing 01 and the second housing 02 are aligned and cover each other, forming a sealed cavity inside for accommodating the electronic display screen and circuit board. Positioning posts and positioning holes are respectively provided at corresponding positions inside the first housing 01 and the second housing 02. The housings are aligned by matching the positioning posts and positioning holes. The contact surfaces of the first housing 01 and the second housing 02 can be fitted together by methods such as bonding, plugging, or screw connection.

[0068] It is obvious that those skilled in the art can make various modifications and changes to the embodiments of this utility model without departing from the spirit and scope of this utility model. In this way, this utility model is also intended to cover such modifications and changes if they fall within the scope of the claims of this utility model and their equivalents. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are described in mutually different dependent claims does not indicate that a combination of these measures cannot be used for profit. Any reference numerals in the claims should not be considered as limiting the scope.

Claims

1. A magnetic electronic photographic paper, characterized in that, The device includes a housing structure and an electronic display screen disposed within the housing. The housing structure includes a first housing and a second housing that are covered together. The inner side of the second housing has multiple magnetic slots below the electronic display screen, and magnetic elements are disposed in the magnetic slots. The outer side of the bottom surface of the second housing has a magnetic force application area corresponding to the position of the magnetic slots. The magnetic force application area is configured to enhance the magnetic attraction of the magnetic elements to external metal objects.

2. The magnetic electronic photographic paper according to claim 1, characterized in that, The magnetic slots are evenly distributed in multiple points.

3. The magnetic electronic photographic paper according to claim 2, characterized in that, The number of magnetic slots is four, and the magnetic slots are evenly distributed in a four-point pattern.

4. The magnetic electronic photographic paper according to claim 3, characterized in that, The four magnetic slots are respectively located near the four corners of the back of the electronic display screen, and the center line connecting the four magnetic slots forms a rectangle, the geometric center of which coincides with the geometric center of the electronic display screen.

5. The magnetic electronic photographic paper according to claim 2, characterized in that, The number of magnetic slots is five, and the magnetic slots are evenly distributed in a five-point pattern.

6. The magnetic electronic photographic paper according to claim 5, characterized in that, Four of the five magnetic slots are respectively located near the four corners of the back of the electronic display screen, and the fifth magnetic slot is located at the geometric center of the electronic display screen.

7. The magnetic electronic photographic paper according to claim 1, characterized in that, The magnetic force application area includes a thin-walled structure formed by locally thinning the corresponding position of the magnetic groove on the bottom surface of the second housing.

8. The magnetic electronic photographic paper according to claim 1, characterized in that, The magnetic force application area includes a through hole penetrating the bottom surface of the second housing; the bottom surface of the magnetic attraction element is coplanar with the inner bottom surface of the second housing, or is filled in the through hole by a magnetically conductive sealing material and in close contact with the bottom of the magnetic attraction element.

9. The magnetic electronic photographic paper according to claim 1, characterized in that, The magnetic field zone includes an auxiliary magnetic layer that adheres to the entire bottom surface or a local area of ​​the second housing.

10. The magnetic electronic photographic paper according to claim 9, characterized in that, The auxiliary magnetic layer includes a metal sheet whose shape and size match the bottom surface of the second housing. The metal sheet is fixed to the bottom surface of the second housing by means of bonding, snapping, or hot melting.

11. The magnetic electronic photographic paper according to claim 9, characterized in that, The auxiliary magnetic attraction layer includes a magnetically conductive material layer formed on the bottom surface of the second housing. The magnetically conductive material layer has a uniform thickness and its edges smoothly transition to the edges of the bottom surface of the second housing.

12. The magnetic electronic photographic paper according to claim 1, characterized in that, The magnetic elements embedded in the magnetic slot all have their magnetic poles facing the same direction.

13. The magnetic electronic photographic paper according to claim 1, characterized in that, The top surface of the magnetic element is in direct physical contact with the back of the electronic display screen, and is fixedly connected to the back of the electronic display screen by its own magnetic force or by bonding adhesive.

14. The magnetic electronic photographic paper according to claim 13, characterized in that, The top surface of each magnetic element is covered with a magnetic shielding sticker.

15. The magnetic electronic photographic paper according to claim 1, characterized in that, The magnetic attraction element includes one of sintered NdFeB permanent magnets, bonded NdFeB permanent magnets, or ferrite permanent magnets.

16. The magnetic electronic photographic paper according to claim 1, characterized in that, The magnetic element is cylindrical, rectangular, or disc-shaped.

17. The magnetic electronic photographic paper according to claim 1, characterized in that, The depth of the magnetic groove is greater than or equal to the thickness of the magnetic element, and a limiting component is provided above or below the magnetic element. The limiting component includes an elastic gasket filled between the magnetic element and the bottom of the magnetic groove.

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