Screen body for electronic paper module and electronic paper module

Abstract

A screen body for an electronic paper module and a manufacturing method therefor. By providing regularly-shaped paste dots (100) on an attachment surface of the screen body and integrating alignment patterns (200) into the paste dots (100), the screen body and an electronic paper film are efficiently and accurately aligned with each other without the need to provide additional positions for alignment marks, thereby increasing the area utilization rate. Grooves (300) designed around the paste dots (100) effectively prevent paste from overflowing. Through hole (400) structures promote the full penetration and curing of the conductive paste, and enhance connection strength. The design of stripes with alternate hydrophilic and hydrophobic surfaces optimizes the fluidity of the paste, improves the production efficiency and yield, and can solve the problems in the prior art, such as inaccurate layout of silver paste dots, being prone to overflow so as to cause short circuits, and abnormal product display.

Description

Screen body for electronic paper module and electronic paper module TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a screen body for electronic paper module and electronic paper module. BACKGROUND

[0002] With the rapid development of information technology, electronic paper technology, as a new type of display technology integrating low power consumption, wide viewing angle, high definition and bendability, is gradually showing application potential and market value in the fields of electronic book readers, smart tags and wearable devices. As the core component of electronic paper module, its performance and manufacturing process are directly related to the display effect and service life of the final product. In recent years, with the continuous improvement of manufacturing process, the design and manufacturing level of electronic paper screen body has made remarkable achievements, especially in improving display effect, reducing energy consumption and enhancing durability.

[0003] However, in the production process of electronic paper module, there is always a problem of precise layout and control of slurry points. In the traditional design, the slurry points of the electronic paper screen body are usually designed in a circular shape. Although this design simplifies the manufacturing process to some extent, it exposes obvious drawbacks in actual operation. Due to the fluidity and ductility of silver paste material, it is difficult for the equipment to accurately grasp and position the circular slurry points during the silver paste process, resulting in the slurry points being prone to deviation or overflow before solidification. When these slurry points with deviations are attached to the electronic paper film, not only will it affect the accurate layout of the circuit, but also may cause short circuit problems between circuits due to the excessive extension of silver paste, thereby causing product display abnormalities such as screen flickering, image distortion or even complete inability to display, which seriously restricts the yield and user experience of electronic paper products.

[0004] Therefore, how to effectively solve the problem of inaccurate layout of slurry points and short circuit caused by overflow while maintaining efficient production of electronic paper module has become a key bottleneck that needs to be broken through in the current electronic paper technology field. SUMMARY

[0005] The purpose of the present application is to provide a screen body for electronic paper module, which can improve the position accuracy of the equipment during silver paste process, thereby reducing the problem of short circuit caused by silver paste point deviation and product display abnormalities. The screen body for electronic paper module of the present application comprises a coating surface for coating an electronic paper film.

[0006] At least one slurry point is arranged on the coating surface, and the shape of the slurry point is a regular shape.

[0007] A positioning pattern is arranged on the slurry point, which is used for positioning the screen body and the electronic paper film when the electronic paper film is attached to the screen body.

[0008] The surface of the slurry point comprises a metal layer or a conductive oxide layer, and the positioning pattern has a material layer and / or surface structure different from other parts.

[0009] In one embodiment, the slurry point is circular or square, and a groove is arranged around the slurry point, which is used for accommodating excess metal slurry.

[0010] In one embodiment, a through hole is further arranged on the slurry point, and the through hole is arranged at the position of the positioning pattern.

[0011] In one embodiment, one end of the through hole is located on the attachment surface, and the other end is located on the side of the screen body.

[0012] In one embodiment, the diameter of the through hole gradually decreases from the attachment surface to the other end.

[0013] In one embodiment, the inner wall of the through hole is a hydrophilic surface.

[0014] In one embodiment, a stripe is arranged around the slurry point, which is separated by a hydrophilic surface and a hydrophobic surface.

[0015] In one embodiment, the positioning pattern comprises an arrow shape.

[0016] The application further provides a manufacturing method of an electronic paper module, which uses the aforementioned screen body for an electronic paper module, positions the screen body and the electronic paper film through the slurry point on the screen body, applies conductive slurry on the slurry point after the positioning is completed, attaches the electronic paper film to the screen body, and completes the connection after the slurry is solidified.

[0017] The application further provides an electronic paper module, which comprises the aforementioned screen body for an electronic paper module and an electronic paper film, and the electronic paper film is attached to the screen body.

[0018] Compared with the prior art, the present application has the following beneficial effects: the screen body for the electronic paper module and the manufacturing method thereof, and the electronic paper module comprising the screen body, efficient and accurate alignment and area optimization, the slurry points with regular shapes are arranged on the pasting surface of the screen body, and the alignment patterns are directly integrated inside the slurry points, without the need for additional design of special alignment mark positions, which not only simplifies the alignment process and improves the alignment accuracy, but also significantly improves the area utilization of the screen body. In the traditional design, a specific area may be reserved for the alignment mark, while in the present application, the alignment patterns are combined with the conductive slurry points, effectively reducing the invalid area, so that the entire screen body layout is more compact and efficient.

[0019] The grooves designed around the slurry points effectively collect the excess metal slurry that may be generated during the coating process, preventing pollution and poor connection caused by slurry overflow, not only maintaining the cleanliness of the screen body, but also ensuring the uniformity and stability of the conductive slurry layer, improving the electrical performance and durability of the electronic paper module.

[0020] By providing through holes on the slurry points, the conductive slurry is promoted to fully penetrate and solidify, thereby enhancing the connection strength between the screen body and the electronic paper film. The hydrophilic inner wall of the through hole further improves the adhesion and solidification effect of the slurry, ensuring the reliability and durability of the connection. The stripe design separating the hydrophilic surface and the hydrophobic surface optimizes the flowability and uniformity of the slurry on the surface of the screen body, reducing bubbles and defects during the production process. The indicator shape included in the alignment pattern provides intuitive visual guidance for the operator, making the alignment process faster and more accurate. This design is particularly suitable for automated production line environments, significantly improving production efficiency and product consistency.

[0021] The screen body for the electronic paper module and the manufacturing method thereof of the present application, by ingeniously combining the alignment patterns with the conductive slurry points, not only achieve efficient and accurate alignment function, but also significantly optimize the area utilization, improve the production efficiency and yield. BRIEF DESCRIPTION OF DRAWINGS

[0022] FIG. 1 is a structural schematic diagram of a screen body for an electronic paper module in an embodiment of the present application;

[0023] FIG. 2 is a top view schematic diagram of a slurry point in an embodiment of the present application;

[0024] FIG. 3 is a cross-sectional schematic diagram of a screen body for an electronic paper module in another embodiment of the present application.

[0025] Legend of reference signs: 100, slurry point; 200, alignment pattern; 300, groove; 400, through hole. DETAILED DESCRIPTION

[0026] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the purpose of description, only the parts related to the present application are shown in the drawings, rather than all the structures. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0027] The terms "comprising" and "having" and any variations thereof in the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.

[0028] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor does it necessarily exclude other embodiments although it can. It is explicitly and implicitly understood that the embodiments described herein are capable of combination with each other.

[0029] Referring to FIGS. 1-3, the screen body for electronic paper module in the preferred embodiment of the present application is suitable for improving the alignment accuracy during dispensing and bonding, and preventing the overflow of silver paste, thereby solving the problem of reducing the short circuit caused by the deviation of silver paste and the abnormal display of the product. The screen body for electronic paper module includes a coating surface for coating the electronic paper film, at least one silver paste point 100 is arranged on the coating surface, the shape of the silver paste point 100 is regular, and a registration pattern 200 is arranged in the silver paste point 100, which is used for alignment when the screen body is coated with the electronic paper film. The surface of the silver paste point 100 includes a metal layer or a conductive oxide layer, and the registration pattern 200 has a material layer and / or surface structure different from other parts. Each silver paste point 100 is embedded with a registration pattern 200, which serves as an auxiliary tool for precise positioning and plays an important role in the alignment of the screen body and the bonding with the electronic paper film, ensuring the precise alignment of the two during the silver paste coating and coating process, effectively avoiding display abnormalities or performance degradation caused by positional deviation, thereby ensuring the high-quality display effect and long-term reliability of the electronic paper module. The silver paste point 100 uses specific materials (such as a metal layer or a conductive oxide layer), which not only have excellent conductivity but also significantly improve the adhesion of the silver paste. The introduction of the registration pattern 200, combined with high-precision manufacturing processes, enables the coating process of the screen body and the electronic paper film to achieve micron-level positioning accuracy. This improvement directly improves the overall display effect of the product and reduces image distortion, color unevenness, and other problems caused by positional deviation. Integrating two key functional structures in the same location greatly improves the area utilization and effectively reduces space waste, improving the area utilization of the entire screen body. This is particularly important for electronic paper products that pursue thinness and portability. The integrated design makes the screen body structure more compact.

[0030] Specifically, the slurry point 100 is circular or square, and a groove 300 is arranged around the slurry point 100, which is used to accommodate excess metal slurry. The slurry point 100 on the electronic paper module screen body is circular or square, which is easy to manufacture and position due to its regular geometric characteristics. The groove 300 structure is ingeniously arranged around the slurry point 100, which is used to effectively accommodate and manage excess metal slurry during the slurry coating process. The design of the groove 300 fully considers the physical properties and flow rules during the slurry coating process, ensuring that excess slurry can flow naturally into and be stored in the groove 300 during the coating process, rather than spreading irregularly to other surfaces, thereby avoiding problems such as pollution, short circuit or affecting the alignment accuracy caused by slurry overflow. In addition, the groove 300 also plays an auxiliary positioning and fixing role. When the screen body and the electronic paper film are laminated, the presence of the groove 300 can help guide the precise docking of the slurry point 100 and the corresponding structure on the electronic paper film, further improving the accuracy and stability of the alignment.

[0031] Specifically, the slurry point 100 also includes a through hole 400, which is arranged at the position of the alignment pattern 200. Based on the consideration of slurry permeability, solidification effect and connection strength between the screen body and the electronic paper film, the presence of the through hole 400 enables the metal slurry to penetrate more fully into the screen body during the coating process, forming a more secure bond with the substrate. At the same time, the through hole 400 also promotes the gas discharge during the solidification of the slurry, reducing the generation of defects such as bubbles, further improving the reliability of the connection. The design of combining the alignment pattern 200 and the through hole 400 not only retains the precise positioning function of the alignment pattern 200 during the lamination of the screen body and the electronic paper film, but also enables the slurry to be more accurately filled into the area where the alignment pattern 200 is located through the guiding action of the through hole 400, thereby realizing the dual optimization of alignment and connection.

[0032] Specifically, one end of the through hole 400 is located at the lamination surface, and the other end is located at the side edge of the screen body. One end of the through hole 400 is directly exposed to the lamination surface, which facilitates the direct coating and penetration of the metal slurry; while the other end extends to the side edge of the screen body, which provides convenience for the gas discharge during the solidification of the slurry and possible subsequent connection. As an effective channel for gas discharge, the through hole 400 reduces the formation of defects such as bubbles during the solidification of the slurry, improves the yield and quality of the product, simplifies the production process and makes the coating observation intuitive, which improves the production efficiency, and also helps to improve the controllability and stability of the process.

[0033] Specifically, the diameter of the through hole 400 gradually decreases from the coating surface to the other end. The design principle of the tapered through hole is based on the consideration of fluid dynamics and material science. From the coating surface, a larger diameter is beneficial to the smooth injection and initial distribution of the metal paste, reducing the resistance and loss of the paste during injection. As the diameter of the through hole 400 gradually decreases, the pressure on the paste during flow increases, thereby promoting the paste to penetrate deeper into the screen body and form a more intimate bond with the substrate. In addition, the tapered through hole also helps the gas to be discharged during the curing process of the paste. Due to the gradual decrease in the diameter of the through hole 400, the paste will be guided during movement, making the gas more smoothly discharged along the path of the through hole 400, reducing the formation of defects such as bubbles. At the same time, the design of the tapered through hole 400 also enhances the mechanical strength of the connection, making the connection between the screen body and the electronic paper film more stable and reliable.

[0034] Specifically, the inner wall of the through hole 400 is a hydrophilic surface. The hydrophilic inner wall can significantly enhance the wetting effect between the metal paste and the wall of the through hole 400, promoting the uniform distribution and rapid penetration of the paste in the through hole 400. Due to the improved wettability and bonding strength between the paste and the inner wall of the through hole 400, the overall reliability of the connection structure is also enhanced. The design of the hydrophilic inner wall reduces the strict requirements on the parameters of paste coating and curing during production, reducing the production difficulty and cost. By optimizing the flow and distribution characteristics of the paste in the through hole 400, the design of the hydrophilic inner wall helps to improve the overall performance and stability of the electronic paper module screen body.

[0035] Specifically, the four sides of the paste point 100 are provided with stripes of hydrophilic surface and hydrophobic surface. The alternating stripes of hydrophilic surface and hydrophobic surface are realized by micro-nano processing technology in the peripheral area of the paste point 100. The hydrophilic surface can attract and promote the wetting and flow of the metal paste, while the hydrophobic surface repels the paste and limits its diffusion range. This design allows the paste to flow along the predetermined stripe path during coating, forming a regular boundary and shape, reducing waste and pollution of the paste. At the same time, the alternating action of the hydrophilic and hydrophobic surfaces also promotes the gas discharge during the curing process of the paste. During the curing of the paste, the gas generated will try to escape through the paste layer, and the presence of the hydrophobic surface provides a channel and direction for the gas to escape, helping to reduce the formation of defects such as bubbles. Further, the width of the hydrophobic surface stripe is 20%-35% of the width of the hydrophilic surface, which improves the effect of regional limitation of the metal paste by limiting the width of the hydrophobic surface stripe.

[0036] Specifically, the alignment pattern 200 includes indicator shapes that present in specific graphical or symbolic forms, aiming to provide intuitive and reliable references for the precise alignment between the screen body and the electronic paper film. The design of the indicator shapes fully considers the actual needs and operational convenience in the production process. Possible shapes include arrows, crosshairs, circular markers, etc., each carrying specific alignment information. For example, arrows can indicate the direction of movement during lamination, ensuring that the screen body and the electronic paper film can be laminated along the correct path; crosshairs are used to accurately mark the alignment center, helping operators quickly find and fix the alignment point; circular markers may be used to identify key areas, reminding attention to the alignment accuracy and requirements of that area. By combining the alignment pattern 200 with the indicator shapes, not only the intuitiveness and accuracy of the alignment process are improved, but also the operational difficulty and error rate are reduced. This design enables the operators on the production line to more quickly and accurately complete the alignment work between the screen body and the electronic paper film, thereby improving production efficiency and product quality.

[0037] The present application also provides a method for manufacturing an electronic paper module, using the aforementioned screen body for an electronic paper module. The screen body is aligned with the electronic paper film through the slurry points 100 on the screen body, and after alignment is completed, conductive slurry is applied on the slurry points 100, the electronic paper film is laminated onto the screen body, and the slurry is cured to complete the connection. The manufacturing method first aligns the screen body and the electronic paper film according to the pre-set alignment pattern 200. In this step, the slurry points 100 on the screen body not only serve as a connection medium, but also act as an alignment marker. The operator can intuitively complete the alignment work between the screen body and the electronic paper film quickly and accurately through the position and shape of the slurry points 100 and the indicator shapes in the alignment pattern 200. After alignment is completed, conductive slurry is applied on the slurry points 100. In this step, the selection and application process of the conductive slurry need to be strictly controlled to ensure that it has good conductivity and adhesion. The conductive slurry will fill the entire area of the slurry points 100 and form a tight bond with the screen body and the electronic paper film, providing a reliable electrical path for subsequent connection. Subsequently, the electronic paper film is laminated onto the screen body and the slurry is cured. During the curing process, the conductive slurry will gradually harden and tightly bond with the screen body and the electronic paper film, forming a stable connection structure. At the same time, the design of the hydrophilic inner wall helps to promote the gas discharge of the slurry during the curing process, reducing the formation of defects such as air bubbles, and further improving the connection quality.

[0038] The application further provides an electronic paper module, which comprises the aforementioned screen body for the electronic paper module and an electronic paper film attached to the screen body. The screen body adopts a unique structural design, which is provided with carefully laid-out paste points 100 and their matching alignment patterns 200. These paste points 100 not only serve as connecting media, but also realize high-precision alignment and stable connection with the electronic paper film through their unique hydrophilic and hydrophobic surface design and the indicating shapes in the alignment patterns 200. When the electronic paper film is attached to the screen body, the connection between the two is realized through the paste points 100 on the screen body. The conductive paste in the paste points 100 forms stable electrical paths after solidification, ensuring that the electronic paper film can normally receive and display image information. The unique design of the paste points 100 in combination with the alignment patterns 200 ensures high-precision alignment and stable connection between the screen body and the electronic paper film, effectively preventing problems such as loose or detached connection.

[0039] As can be seen from the foregoing, the present patent application proposes a screen body design for an electronic paper module and a manufacturing method thereof, aiming to solve the problems of inaccurate silver paste point layout, easy overflow leading to short circuit and abnormal product display in the prior art, and significantly improve production efficiency and product performance.

[0040] Firstly, the present application realizes efficient and accurate alignment between the screen body and the electronic paper film by providing paste points with regular shapes on the attachment surface of the screen body and integrating alignment patterns inside the paste points. This design does not require additional reserved alignment mark positions, thereby improving the area utilization rate of the screen body and making the entire layout more compact and reasonable. At the same time, the unique design of the alignment patterns enhances visual guidance, simplifies the alignment process, and reduces the operation difficulty and error rate.

[0041] Secondly, in order to optimize paste management and reduce pollution, the present application designs a groove structure around the paste points to accommodate excess metal paste that may be generated during the coating process, effectively preventing pollution and poor connection problems caused by paste overflow, maintaining the cleanliness of the screen body, and ensuring the uniformity and stability of the conductive paste layer.

[0042] In addition, the present application also provides a through-hole structure on the paste points to promote the full penetration and solidification of the conductive paste. The inner wall of the through-hole is made of a hydrophilic material, which further enhances the adhesion and solidification effect of the paste, thereby improving the connection strength and reliability between the screen body and the electronic paper film.

[0043] In order to further improve production efficiency and yield, the present application also adopts a stripe design with hydrophilic and hydrophobic surfaces to optimize the flowability and distribution uniformity of the paste on the screen body surface, effectively reducing the generation of bubbles and defects, and improving product quality and production efficiency.

[0044] In summary, the screen body design for the electronic paper module and the manufacturing method thereof of the present application solve the key problems in the prior art through a series of innovative structural optimization and functional design, significantly improve the production efficiency and product performance, and provide a more efficient and reliable solution for the production and application of the electronic paper module.

[0045] The above is only one specific embodiment of the present application, and any improvement made on the basis of the concept of the present application is considered to be within the protection scope of the present application.

Claims

1. A screen body for an electronic paper module, characterized by, The screen body for the electronic paper module comprises a sticking surface for sticking an electronic paper film; At least one paste point (100) is arranged on the sticking surface, the shape of the paste point (100) is regular; An alignment pattern (200) is arranged in the paste point (100), the alignment pattern (200) is used for alignment when the screen body is stuck with the electronic paper film. The surface of the paste point (100) comprises a metal layer or a conductive oxide layer, and the alignment pattern (200) has a material layer and / or surface structure different from other parts. 2.The screen body for an electronic paper module according to claim 1, wherein, The paste point (100) is circular or square, and a groove (300) is arranged around the paste point (100), the groove (300) is used for accommodating excess metal paste. 3.The screen body for an electronic paper module according to claim 1, wherein, A through hole (400) is further arranged on the paste point (100), and the through hole (400) is arranged at the position of the alignment pattern (200). 4.The screen body for an electronic paper module according to claim 3, characterized in that, One end of the through hole (400) is located on the sticking surface, and the other end is located on the side edge of the screen body. 5.The screen body for an electronic paper module according to claim 4, characterized in that, The diameter of the through hole (400) gradually decreases from the sticking surface to the other end. 6.The screen body for an electronic paper module according to claim 5, wherein, The inner wall of the through hole (400) is a hydrophilic surface. 7.The screen body for an electronic paper module according to claim 1, wherein A stripe is arranged around the paste point (100), and the stripe is separated by a hydrophilic surface and a hydrophobic surface.

8. The screen body for the electronic paper module according to claim 1, wherein The alignment pattern (200) comprises an indicating shape.

9. A manufacturing method of an electronic paper module, characterized by comprising: The screen body for the electronic paper module is used for aligning the screen body with the electronic paper film through the paste point (100) on the screen body, coating conductive paste on the paste point (100) after the alignment is completed, sticking the electronic paper film on the screen body, and completing the connection after the paste is solidified.

10. An electronic paper module, characterized by comprising: The screen body for the electronic paper module and the electronic paper film are used for sticking the electronic paper film on the screen body.

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