Double-sided display module and manufacturing method thereof

Abstract

The application provides a double-sided display module and a manufacturing method thereof. The double-sided display module comprises a rigid substrate, a flexible display panel, a polarizing layer, a double-sided adhesive layer, a cover plate, an electronic component and an encapsulating adhesive layer. The two sides of the rigid substrate are provided with the flexible display panel. The two layers of the polarizing layer are provided in correspondence with the two flexible display panels. The polarizing layer is connected to the side of the flexible display panel away from the rigid substrate. The two layers of the double-sided adhesive layer are provided in correspondence with the two layers of the polarizing layer. The double-sided adhesive layer is connected to the side of the polarizing layer away from the flexible display panel. The two cover plates are provided in correspondence with the two layers of the double-sided adhesive layer. The two cover plates are respectively connected to the side of the double-sided adhesive layer away from the polarizing layer. The electronic component is connected to the two flexible display panels. The encapsulating adhesive layer is located between the two cover plates and is arranged on the circumferential side of the rigid substrate, the flexible display panel, the polarizing layer and the double-sided adhesive layer. The double-sided display module provided by the application can combine rigid and flexible display technology and double-sided display function.

Description

Technical Field

[0001] This application belongs to the field of display technology, and more specifically, relates to a double-sided display module and its manufacturing method. Background Technology

[0002] Because rigid-flexible display structures hold an advantage in the medium-to-large-size display market, an increasing number of medium-to-large-size products are adopting this structure. Furthermore, there is often a demand for double-sided displays in medium-to-large-size applications such as airport waiting halls and interactive service counters. Therefore, the question arises of how to combine rigid-flexible display technology with double-sided display functionality. Summary of the Invention

[0003] The purpose of this application is to provide a double-sided display module and its manufacturing method, so as to combine rigid-flexible display technology and double-sided display function.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: a double-sided display module is provided, comprising: a rigid substrate; flexible display panels, with flexible display panels disposed on both sides of the rigid substrate; polarizing layers, with two polarizing layers corresponding to the two flexible display panels, the polarizing layers being disposed on the side of the flexible display panels facing away from the rigid substrate; double-sided adhesive layers, with two double-sided adhesive layers corresponding to the two polarizing layers, the double-sided adhesive layers being connected to the side of the polarizing layers facing away from the flexible display panels; cover plates, with two cover plates corresponding to the two double-sided adhesive layers, the cover plates being connected to the side of the double-sided adhesive layers facing away from the polarizing layers; electronic components, the electronic components being connected to the two flexible display panels; and an encapsulating layer, the encapsulating layer being located between the two cover plates and disposed around the rigid substrate, flexible display panels, polarizing layers, and double-sided adhesive layers.

[0005] In one alternative embodiment, the electronic component includes an integrated circuit chip, a flexible printed circuit board, and a printed circuit board, wherein the integrated circuit chip and the flexible printed circuit board are connected to the flexible display panel, and the flexible printed circuit board is connected to the printed circuit board.

[0006] In one optional embodiment, two integrated circuit chips are provided, each disposed on one of two flexible display panels. Two flexible printed circuit boards are provided, with one end of each flexible printed circuit board connected to one of the two flexible display panels and the other end of each flexible printed circuit board connected to a printed circuit board.

[0007] In one alternative embodiment, the electronic component extends outward along one side of the flexible display panel, and the encapsulating layer is disposed on the side of the flexible display panel located outside the electronic component.

[0008] In one alternative embodiment, two flexible display panels are provided, with the two flexible display panels respectively disposed on both sides of the rigid substrate; or, the flexible display panel is provided with a layer, the flexible display panel is folded and covers both sides of the rigid substrate.

[0009] In one alternative embodiment, the cover plate, flexible display panel, polarizing layer and double-sided adhesive layer located on both sides of the rigid substrate are symmetrically arranged along the rigid substrate.

[0010] In one alternative embodiment, the rigid substrate includes a glass substrate; and / or, the cover plate is made of glass; and / or, the double-sided adhesive layer is made of UV-curable adhesive.

[0011] Another objective of this application is to provide a method for manufacturing a double-sided display module. The method includes: providing a screen body, the screen body including a rigid substrate and a flexible display panel, with flexible display panels disposed on both sides of the rigid substrate; disposing of two polarizing layers on the side of the two flexible display panels facing away from the rigid substrate; attaching two double-sided adhesive layers to the side of the two polarizing layers facing away from the flexible display panels; attaching two cover plates to the two double-sided adhesive layers; and disposing of a sealing layer between the two cover plates, with the sealing layer surrounding the rigid substrate, the flexible display panel, the polarizing layers, and the double-sided adhesive layers.

[0012] In one optional embodiment, the step of mounting electronic components on two flexible display panels specifically includes: mounting two integrated circuit chips on the two flexible display panels respectively; mounting one end of two flexible printed circuit boards on the two flexible display panels respectively; and connecting the other ends of the two flexible printed circuit boards to the same printed circuit board.

[0013] The beneficial effects of the double-sided display module and its manufacturing method provided in this application are as follows: Compared with the prior art, the double-sided display module of this application, by sharing a rigid substrate and setting flexible display panels on both sides of the rigid substrate, can effectively reduce the overall thickness and volume of the module, reduce space occupation, and facilitate lightweight design. Setting two polarization layers can ensure image clarity. By setting a cover plate and a sealing layer, the internal components can be protected and display failure can be prevented. The double-sided display module can be controlled by electronic components to achieve independent display or simultaneous display, so that the double-sided display module can simultaneously have the effect of independent display on both sides and clear image quality. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a front view of the double-sided display module provided in the embodiments of this application;

[0016] Figure 2 This is a side view of a double-sided display module provided in an embodiment of this application;

[0017] Figure 3 A front view of a double-sided display module provided in another embodiment of this application;

[0018] Figure 4 A flowchart illustrating the manufacturing method of the double-sided display module provided in this application embodiment.

[0019] The following are the labeling elements in the figure:

[0020] 100. Double-sided display module; 10. Rigid substrate; 20. Flexible display panel; 30. Polarizing layer; 40. Double-sided adhesive layer; 50. Cover plate; 61. Integrated circuit chip; 62. Flexible printed circuit board; 63. Printed circuit board; 70. Sealing layer. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise clearly and specifically defined.

[0025] Due to the advantages of rigid-flex hybrid display structures in the medium and large size display market, more and more medium and large size products tend to adopt rigid-flex hybrid display structures, and there are often demands for medium and large size dual-sided displays in application scenarios such as airport waiting halls and interactive service counters. Therefore, there exists a problem of how to combine the rigid-flex hybrid display technology and the dual-sided display function to meet the market demand for compatibility of excellent image quality and interactive display.

[0026] Please refer to together Figures 1 to 3 , the dual-sided display module 100 provided in the embodiments of the present application will now be described. The dual-sided display module 100 includes: a rigid substrate 10; flexible display panels 20, wherein the flexible display panels 20 are disposed on both sides of the rigid substrate 10; polarizing layers 30, two layers of the polarizing layers 30 are disposed corresponding to the two flexible display panels 20, and the polarizing layer 30 is disposed on the side of the flexible display panel 20 facing away from the rigid substrate 10; double-sided adhesive layers 40, two layers of the double-sided adhesive layers 40 are disposed corresponding to the two layers of the polarizing layers 30, and the double-sided adhesive layer 40 is connected to the side of the polarizing layer 30 facing away from the flexible display panel 20; cover plates 50, two of the cover plates 50 are disposed corresponding to the two layers of the double-sided adhesive layers 40, and the cover plate 50 is connected to the side of the double-sided adhesive layer 40 facing away from the polarizing layer 30; an electronic assembly (not marked in the figure), the electronic assembly is connected to the two flexible display panels 20; and a sealant layer 70, the sealant layer 70 is located between the two cover plates 50 and disposed on the peripheral sides of the rigid substrate 10, the flexible display panels 20, the polarizing layers 30 and the double-sided adhesive layers 40.

[0027] In this embodiment, the dual-sided display module 100 is a dual-sided OLED display module. The Chinese and original English corresponding to the English abbreviation used in the present application: OLED, English: Organic Light-Emitting Diode; Chinese: 有机发光二极管.

[0028] The rigid substrate 10 is a hard substrate, which can function to provide mechanical support and maintain structural stability, ensuring that other electronic assemblies have a rigid platform for installation, and can resist external physical pressure and vibration to prevent the components from being damaged. The flexible display panels 20 are used to generate and display images, and disposing the flexible display panels 20 on both sides of the rigid substrate 10 allows information to be displayed on both sides of the device.

[0029] In some embodiments, the flexible display panel 20 further includes a flexible encapsulation layer for protecting sensitive components within the flexible display panel 20, preventing the intrusion of moisture, oxygen, and other contaminants, and ensuring that the display panel maintains good performance over a long period of time. The flexible display panel 20 has a certain degree of curvature to adapt to different shape design requirements.

[0030] The flexible display panel 20 can be directly connected to the rigid substrate 10. The flexible encapsulation layer can provide the necessary protection function. Therefore, no additional frame or other reinforcement is needed to maintain structural integrity and protection performance. The rigid substrate 10 and the flexible display panel 20 form a rigid-flexible structure, which can effectively reduce the overall thickness and volume of the double-sided display module 100, reduce space occupation, and make medium and large-sized display structures thinner and lighter, making them easier to handle and use.

[0031] The rigid substrate 10 can be made of quartz glass or borosilicate glass. The flexible display panel 20 can be made of polyimide or polyethylene terephthalate. The flexible display panel 20 can be connected to the rigid substrate 10 by surface mounting or by adhesive bonding. The flexible encapsulation layer can be disposed on the flexible display panel 20 by deposition or encapsulation.

[0032] A polarizing layer 30 is disposed on the side of the flexible display panel 20 facing away from the rigid substrate 10. The polarizing layer 30 includes a polarizer or a film layer (such as a color filter) with a polarizing effect. The polarizer can reduce screen reflection, improve contrast, and protect the panel; the color filter can filter light of different wavelengths to replace the polarizer. The polarizing layer 30 can be bonded to the flexible display panel 20 using pressure-sensitive adhesive or thermosetting adhesive.

[0033] A double-sided adhesive layer 40 is provided on the side of the polarizing layer 30 facing away from the flexible display panel 20 to connect the cover plate 50. The double-sided adhesive layer 40 includes a substrate-free optical acrylic pressure-sensitive adhesive, which can provide sufficient adhesion while maintaining a relatively thin design without adding excessive thickness. As the outermost physical barrier, the cover plate 50 can protect the internal components and effectively prevent the display module from being affected by external environmental factors such as dust, moisture, and scratches, ensuring the long-term stability and reliability of the display module.

[0034] Furthermore, electronic components, including integrated circuit chips 61, flexible printed circuits, interfaces, etc., are disposed on the two flexible display panels 20 to achieve specific functions. In some embodiments, the electronic components are disposed on the flexible encapsulation layer of the flexible display panel 20. In the double-sided display module 100, the electronic components can control the double-sided display module 100 to achieve independent or simultaneous display functions. For example, in scenarios used for billboards and display screens, the independent display mode allows different advertising content to be displayed on both sides of the double-sided display module 100. Or, for displaying train information in a station, the double-sided display module 100 can display the same train information on both sides.

[0035] A sealing layer 70 is provided on the periphery of the double-sided display module 100, such as... Figure 1 and Figure 2 The encapsulating layer 70 is disposed between the two cover plates 50 and is located around the rigid substrate 10, the flexible display panel 20, and the polarizing layer 30. The encapsulating layer 70 seals the module frame to prevent moisture intrusion that could cause OLED display failure. The encapsulating layer 70 can be made of a liquid optically transparent material to ensure that optical clarity is not affected and to maintain display quality.

[0036] The double-sided display module 100 reduces the module's thickness by sharing a single rigid substrate 10, saving costs and facilitating lightweight design. Each side has an independent polarizing layer 30, allowing for adjustments to optical characteristics such as contrast and color performance to optimize the viewing experience. The sealing layer 70 located between the two cover plates 50 provides a sealed protection for the entire module, effectively extending its lifespan and maintaining its performance, especially useful in public places such as airport waiting halls.

[0037] Thanks to the design of double-sided independent flexible display panels 20 and polarizing layer 30, each side can display different content or interactive interfaces according to actual needs, meeting the demand for information diversity in scenarios such as airport waiting halls and bank counters.

[0038] In addition, touch screen technology can be combined to enable the dual-sided display module 100 to support interactive operations by users on either side, enhancing the user experience, such as in interactive counter scenarios in banks.

[0039] Compared with the prior art, the double-sided display module 100 provided in this application forms a rigid-flexible structure by sharing a rigid substrate 10 and setting flexible display panels 20 on both sides of the rigid substrate 10. This effectively reduces the overall thickness and volume of the module, reduces space occupation, and is conducive to lightweight design. The setting of two polarizing layers 30 can ensure image clarity. By setting a cover plate 50 and a sealing layer 70, the internal components can be protected to prevent display failure. Furthermore, the double-sided display module 100 can achieve independent or simultaneous display functions through electronic components, so that the double-sided display module 100 can simultaneously have the effect of independent display on both sides and clear image quality.

[0040] In another embodiment of this application, please refer to Figure 1 and Figure 3 The electronic components include an integrated circuit chip 61, a flexible printed circuit board 62, and a printed circuit board 63. The integrated circuit chip 61 and the flexible printed circuit board 62 are connected to the flexible display panel 20, and the flexible printed circuit board 62 is connected to the printed circuit board 63.

[0041] The integrated circuit chip 61 can be directly mounted onto the flexible display panel 20, or connected to the flexible display panel 20 via flip-chip technology. By individually placing the integrated circuit chip 61 on each flexible display panel 20, independent control of the display content of both flexible display panels 20 can be achieved. In some embodiments, the integrated circuit chip 61 can be directly mounted onto the flexible encapsulation layer in the flexible display panel 20.

[0042] The flexible printed circuit board 62 is flexible and can be bent or folded during connection. Two flexible printed circuit boards 62 are connected to the rigid printed circuit board 63 by bending and folding, adapting to the shape within space and making the connection more convenient. The connection through the flexible printed circuit board 62 can provide higher mechanical stability and durability. By setting the flexible printed circuit board 62, the loss and delay in the signal transmission process can be effectively reduced, ensuring the stability and speed of data transmission.

[0043] By configuring the printed circuit board 63, input signals from external sources are received, processed as necessary, and then distributed to the flexible display panels 20 on both sides. Centralized control allows for more efficient management of data flow, ensuring that the front and rear flexible display panels 20 can display the desired content synchronously or independently. Simultaneously, the printed circuit board 63 also performs power distribution, supplying power to the flexible printed circuit board 62 and the integrated circuit chip 61.

[0044] By setting up integrated circuit chip 61, flexible printed circuit board 62 and printed circuit board 63, the front and back of the double-sided display module 100 can be controlled to display different content respectively, so as to meet the needs of multiple tasks, such as one side for interactive operation and the other side for information display.

[0045] In another embodiment of this application, please refer to Figure 1 There are two integrated circuit chips 61, which are respectively disposed on two flexible display panels 20. There are two flexible printed circuit boards 62, one end of which is connected to the two flexible display panels 20, and the other end of which is connected to a printed circuit board 63.

[0046] By using a single printed circuit board 63, the need for additional space is reduced, assembly complexity is lowered, and the entire module becomes more compact. At the same time, the flexible printed circuit board 62 can be designed to be very thin and compact, which helps to make use of limited space, optimize the overall layout, and facilitate the design of thinner and lighter products.

[0047] By performing flexible encapsulation on both the front and back sides and sharing a single printed circuit board 63, it is possible to achieve independent light emission and display functions on both sides, as well as excellent image quality on both sides, independent display, and interactive operation.

[0048] Integrated circuit chip 61 and flexible printed circuit board 62 are spaced apart on flexible display panel 20. Each flexible display panel 20 has an independent integrated circuit chip 61 for driving its corresponding flexible display panel 20. A shared printed circuit board 63 receives external input signals and processes them to generate two independent sets of display data. The two flexible printed circuit boards 62 transmit the processed independent display data from the printed circuit board 63 to their respective integrated circuit chips 61, thereby driving the flexible display panels 20 on both sides to work independently. In some embodiments, integrated circuit chip 61 and flexible printed circuit board 62 are spaced apart on a flexible encapsulation layer.

[0049] When the double-sided display module 100 needs to display the same content on both the front and back, the printed circuit board 63 generates the same set of display data and transmits the same signal to the integrated circuit chips 61 on both sides through two flexible printed circuit boards 62. For example, in an information screen in a public place, viewers on both sides can see the same notification. According to user needs, the double-sided display module 100 can dynamically switch between independent display and simultaneous display.

[0050] In another embodiment of this application, please refer to Figure 1 and Figure 2The electronic components extend outward along one side of the flexible display panel 20, and the sealing layer 70 is disposed on the side of the flexible display panel 20 outside the electronic components.

[0051] The side of the flexible display panel 20 located outside the electronic components refers to the remaining sides of the flexible display panel 20 where the electronic components are not extended. If the electronic components are extended and encapsulated along one side of the flexible display panel 20, then an adhesive layer 70 can be applied to the other peripheral sides of the flexible display panel 20 for sealing. For example... Figure 1 and Figure 2 On the left, right, and three sides of the double-sided display module 100, the module frame is sealed with an adhesive layer 70 to prevent moisture from entering the edges and causing OLED display failure.

[0052] By sealing three sides with an adhesive layer 70, an almost completely enclosed space can be formed, effectively preventing moisture and dust from penetrating into the module from these directions. This greatly improves the module's protective performance, especially when used in public places such as station waiting halls, where it can significantly extend service life and reduce failure rate.

[0053] By concentrating the electronic components on one side, the remaining parts can be encapsulated more compactly, making it more suitable for compact product designs. Exposing the electronic components on one side facilitates installation, repair, and replacement by technicians, simplifying maintenance processes, reducing maintenance costs, and enabling future hardware upgrades or replacements.

[0054] Avoiding excessive use of sealing materials around electronic components also reduces factors that may affect signal transmission paths, such as electromagnetic interference, thus maintaining the quality and stability of signal transmission, ensuring low latency and high accuracy during high-frequency data transmission, and ensuring display quality.

[0055] In another embodiment of this application, two flexible display panels 20 are provided, and the two flexible display panels 20 are respectively disposed on both sides of the rigid substrate 10.

[0056] Please see Figure 1 By setting two flexible display panels 20, each flexible display panel 20 can independently adapt to the needs of its corresponding flexible display panel 20, which improves the flexibility of the overall structure and enables the double-sided display module 100 to better adapt to different usage scenarios.

[0057] The front and back sides are flexibly encapsulated separately, ensuring independent display of the double-sided display module 100. Each flexible display panel 20 is independent, which reduces the risk of a problem on one side affecting the other. If one side is damaged, the other side can still function normally, enhancing the overall reliability of the system.

[0058] Furthermore, the manufacturing process of the standalone flexible display panel 20 is simpler, it avoids weak bonding of electronic components due to bending, and reduces stress concentration problems that may occur in the folding area, thus enhancing durability.

[0059] In addition, the flexible display panel 20 can be customized according to the specific needs of each side. For example, better materials can be used on the side that requires higher transparency, ensuring that the display effect of each side can reach the best state and improving the user experience.

[0060] The two flexible display panels 20 can be installed separately, which reduces manufacturing complexity and makes it easier to replace or repair components on one side individually without disassembling the entire module, simplifying the maintenance process and reducing maintenance costs.

[0061] Furthermore, since each flexible display panel 20 is independent, different functional modules can be integrated according to needs, which can increase the product's versatility and meet more diverse application scenarios, such as one side being used for interactive operation and the other side for information display.

[0062] In another embodiment of this application, a flexible display panel 20 is provided, which is folded and covers both sides of the rigid substrate 10.

[0063] Please see Figure 3 Using a single flexible display panel 20 and wrapping it around both sides of the rigid substrate 10 by folding can reduce the number of components and assembly steps. The flexible display panel 20 shares a single layer. After the front flexible encapsulation is completed, the flexible display panel 20 is bent and attached to the back of the rigid substrate 10, which simplifies the production process and reduces manufacturing costs.

[0064] A single flexible display panel 20, by folding, wraps around the entire rigid substrate 10, which can enhance the stability of the overall structure and improve the durability of the device to a certain extent. Furthermore, a single foldable flexible display panel 20 occupies less space, making the product more compact.

[0065] In another embodiment of this application, the cover plate 50, flexible display panel 20, polarizing layer 30 and double-sided adhesive layer 40 located on both sides of the rigid substrate 10 are symmetrically arranged along the rigid substrate 10.

[0066] Please see Figure 2The layered structures located on both sides of the rigid substrate 10 are symmetrically arranged about the rigid substrate 10 to ensure consistent optical performance on both sides, achieving balance and consistency. That is, the cover plate 50, flexible display panel 20, polarizing layer 30, and double-sided adhesive layer 40 on both sides of the rigid substrate 10 use the same materials and structural design. Since the optical components such as the flexible display panel 20 and polarizing layer 30 on both sides are symmetrically arranged, the path length and refraction characteristics of light passing through these components are consistent, ensuring that the optical performance (such as brightness, contrast, and color consistency) of the front and back display panels are the same, avoiding the situation where one side has a better display effect than the other side, providing a unified visual experience, and suitable for scenarios where the same content is displayed on both sides at the same time.

[0067] The symmetrical design ensures consistent structural and material properties on both sides, allowing for independent or simultaneous control of the displayed content. In independent display mode, different content can be displayed on each side to meet multitasking needs. In simultaneous display mode, both display panels can display completely identical content, ensuring visual consistency.

[0068] The symmetrically arranged flexible display panel 20 and cover plate 50 provide a consistent sealing effect on both sides, effectively blocking external contaminants such as moisture and dust. The symmetrical arrangement makes the weight distribution of the entire module more uniform, reducing stress concentration or deformation problems caused by asymmetry on both sides, and improving the mechanical stability of the overall structure.

[0069] As the core support structure of the entire module, the rigid substrate 10 is responsible for fixing and connecting the components on both sides. The rigidity and stability of the rigid substrate 10 provide a basis for the symmetrical design and ensure that the components on both sides will not deform due to uneven force. The flexibility of the flexible display panel 20 allows it to adapt to complex shape changes in the symmetrical design while maintaining good sealing performance.

[0070] In another embodiment of this application, the rigid substrate 10 includes a glass substrate. Glass has extremely high hardness and rigidity, and is not easily deformed or bent. The glass substrate provides a stable support structure, enhances the overall structural durability, and ensures that the display module will not warp or deform during long-term use. Furthermore, the glass substrate has good uniformity and consistency, ensuring uniform light distribution in the backlight or self-emissive layer, avoiding brightness or color differences caused by substrate unevenness, and providing a more consistent display effect. Used in a double-sided display module 100, this ensures that the display quality on both sides is the same.

[0071] In another embodiment of this application, the cover plate 50 is made of glass. Glass is harder than other materials such as plastic, and has better wear resistance and scratch resistance. Making the cover plate 50 of glass, and placing it on the outer side, provides better physical protection, preventing external impacts from damaging internal components, enhancing the overall protection level of the display module, and extending the device's lifespan. Glass has very high transparency, minimizing light loss during transmission, providing a clear and bright image display effect, and enhancing the user's visual experience. Glass also has good chemical resistance, is not easily affected by corrosion or oxidation, extending the device's lifespan, reducing maintenance costs, and providing better protection. Furthermore, the smooth and flat surface of glass, with a low coefficient of friction, is suitable for integrating capacitive touchscreens, providing a more sensitive and accurate touch experience.

[0072] In another embodiment of this application, the double-sided adhesive layer 40 is made of a UV-curable adhesive. Using a UV-curable adhesive allows for rapid curing upon UV irradiation, significantly shortening the production cycle and improving production efficiency. Furthermore, the curing of the UV-curable adhesive occurs only under UV irradiation; therefore, the curing location and degree of the adhesive can be precisely controlled by adjusting the irradiation area and time, ensuring that the adhesive cures only where needed and avoiding excess adhesive or uncured adhesive residue. By using a UV-curable adhesive, the polarizing layer 30 and the cover plate 50 can be firmly bonded, providing a reliable connection and ensuring a tight fit between the cover plate 50 and components such as the polarizing layer 30, preventing delamination or displacement. In use, the UV-curable adhesive also has high transparency, thus not significantly affecting light transmittance and providing a clear visual effect, meeting the requirements of high-quality displays.

[0073] This application also provides a method for manufacturing a double-sided display module 100. The method includes: providing a screen body (not shown in the figure), the screen body including a rigid substrate 10 and a flexible display panel 20, with flexible display panels 20 disposed on both sides of the rigid substrate 10; disposing of two polarizing layers 30 on the side of the two flexible display panels 20 facing away from the rigid substrate 10; mounting two integrated circuit chips 61 on the two flexible display panels 20 respectively; disposing of one end of two flexible printed circuit boards 62 on the two flexible display panels 20 respectively; connecting the other end of the two flexible printed circuit boards 62 to the same printed circuit board 63; attaching two double-sided adhesive layers 40 to the side of the two polarizing layers 30 facing away from the flexible display panels 20 respectively; attaching two cover plates 50 to the two double-sided adhesive layers 40 respectively; and disposing of a sealing layer 70 between the two cover plates 50, with the sealing layer 70 surrounding the rigid substrate 10, the flexible display panel 20, the polarizing layer 30, and the double-sided adhesive layer 40.

[0074] Please see Figures 1 to 4By setting flexible display panels 20 on both sides of the rigid substrate 10, a composite structure that has both the rigidity of the rigid substrate 10 and the flexibility of the flexible display panel 20 can be constructed. This provides sufficient mechanical strength to prevent deformation or damage, while maintaining a certain degree of flexibility, making it suitable for various application scenarios. It can effectively reduce the overall thickness and volume of the double-sided display module 100 and reduce space occupation.

[0075] Each flexible display panel 20 is equipped with an independent integrated circuit chip 61 and connected to the same printed circuit board 63 via its own flexible printed circuit board 62. This allows the front and back flexible display panels 20 to work independently or synchronously as needed, providing high flexibility to adapt to different application scenarios, such as airport information screens and interactive counters. By sharing a single printed circuit board 63, the requirement for additional space is reduced, assembly complexity is lowered, and the entire module becomes more compact.

[0076] A polarizing layer 30 is attached to the side of the flexible display panel 20 away from the rigid substrate 10, which helps to reduce the impact of external light on the screen, improve contrast and color performance, provide a clear and bright image display effect, and enhance the user's visual experience.

[0077] Double-sided adhesive layer 40 is used to attach cover plate 50 to polarizing layer 30, making the connection convenient and stable. A sealing layer 70 is set between the two cover plates 50 to seal around the module frame, forming an effective sealing barrier to prevent moisture, dust and other external pollutants from entering the interior and extending the service life of the equipment.

[0078] By sharing a rigid substrate 10 and setting flexible display panels 20 on both sides of the rigid substrate 10, a rigid-flexible combined structure is formed, which can effectively reduce the overall thickness and volume of the module, reduce space occupation, and facilitate lightweight design. Setting two polarizing layers 30 can ensure image clarity. By setting a cover plate 50 and a sealing layer 70, the internal components can be protected to prevent display failure. Furthermore, by controlling the double-sided display module 100 through electronic components, the function of independent display or simultaneous display can be realized, so that the double-sided display module 100 can simultaneously have the effect of independent display on both sides and clear image quality.

[0079] In another embodiment of this application, two flexible display panels 20 are provided, with the two flexible display panels 20 respectively disposed on both sides of the rigid substrate 10. By providing two layers of flexible display panels 20, each flexible display panel 20 can independently adapt to the needs of its corresponding flexible display panel 20, improving the overall structural flexibility and enabling the double-sided display module 100 to better adapt to different application scenarios. Separate flexible encapsulation of the front and back sides ensures independent display of the double-sided display module 100. Since each side's flexible display panel 20 is independent, the risk of a problem on one side affecting the other side is reduced. If one side is damaged, the other side can still function normally, enhancing the overall reliability of the system. Furthermore, the individual flexible display panel 20 has a simpler installation process, avoids weak bonding of electronic components due to bending, and reduces stress concentration problems that may occur in the folding area, enhancing durability.

[0080] In another embodiment of this application, the flexible display panel 20 is provided with one layer, and the flexible display panel 20 is folded and covers both sides of the rigid substrate 10. Using a single flexible display panel 20 and covering both sides of the rigid substrate 10 by folding can reduce the number of components and assembly steps. The flexible display panel 20 shares a single layer. After the front flexible encapsulation is completed, the flexible display panel 20 is bent and attached to the back of the rigid substrate 10 before the back flexible encapsulation is performed, which simplifies the production process and reduces manufacturing costs. The single flexible display panel 20 wraps the entire rigid substrate 10 by folding, which can enhance the stability of the overall structure to a certain extent and improve the durability of the device. Moreover, the single folded flexible display panel 20 occupies less space, making the product more compact.

[0081] In another embodiment of this application, the step of mounting electronic components on two flexible display panels 20 specifically includes: mounting two integrated circuit chips 61 on the two flexible display panels 20 respectively; mounting one end of two flexible printed circuit boards 62 on the two flexible display panels 20 respectively; and connecting the other end of the two flexible printed circuit boards 62 to the same printed circuit board 63.

[0082] That is, by setting up a single printed circuit board 63, the need for additional space is reduced, the assembly complexity is lowered, and the structure of the double-sided display module 100 is made more compact. At the same time, the flexible printed circuit board 62 can be designed to be very thin and compact, which helps to install in structures with limited space and facilitates the design of thinner and lighter products.

[0083] Two integrated circuit chips 61 are respectively mounted on two flexible display panels 20. Specifically, in the production line, one integrated circuit chip 61 is first mounted on one flexible display panel 20, and then the machine flips the screen to mount the other integrated circuit chip 61 on the other flexible display panel 20. Similarly, one end of two flexible printed circuit boards 62 are respectively mounted on two flexible display panels 20. Specifically, in the production line, one end of one flexible printed circuit board 62 is first mounted on one flexible display panel 20, and then the machine flips the screen to mount the other end of the other flexible printed circuit board 62 on the other flexible display panel 20. By folding and bending the two flexible printed circuit boards 62, the other ends of the two flexible printed circuit boards 62 are connected to the same printed circuit board 63.

[0084] By performing flexible encapsulation on both the front and back sides while sharing a single printed circuit board 63, independent light emission and display functions on both sides can be achieved, enabling excellent image quality on both sides, independent display, and interactive operation. Figure 1 The integrated circuit chip 61 and the flexible printed circuit board 62 are arranged at intervals on the flexible display panel 20. Each flexible display panel 20 has an independent integrated circuit chip 61 for driving its corresponding flexible display panel 20. The shared printed circuit board 63 receives external input signals and processes the signals to generate two independent sets of display data. The two flexible printed circuit boards 62 transmit the processed independent display data from the printed circuit board 63 to their respective integrated circuit chips 61, thereby driving the flexible display panels 20 on both sides to work independently.

[0085] When the double-sided display module 100 needs to display the same content on both the front and back, the printed circuit board 63 generates the same set of display data and transmits the same signal to the integrated circuit chips 61 on both sides through two flexible printed circuit boards 62. For example, in an information screen in a public place, viewers on both sides can see the same notification. According to user needs, the double-sided display module 100 can dynamically switch between independent display and simultaneous display.

[0086] In some embodiments, a flexible printed circuit board 62 is provided to extend outward along one side of the flexible display panel 20 to connect to a printed circuit board 63, and an encapsulating layer 70 is provided around the side of the flexible display panel 20 located outside the electronic components.

[0087] The side of the flexible display panel 20 located outside the electronic components refers to the remaining side of the flexible display panel 20 where the electronic components are not brought out. For example... Figure 1 and Figure 2The left, right, and three sides of the double-sided display module 100 are sealed with an adhesive layer 70 to prevent moisture from seeping in and causing OLED display failure. By setting the adhesive layer 70 on three sides, an almost completely sealed space can be formed, effectively preventing moisture and dust from penetrating into the module from these directions, greatly improving the module's protective performance. Especially when used in public places such as train station waiting halls, it can significantly extend the service life and reduce the failure rate.

[0088] By concentrating the integrated circuit chip 61, flexible printed circuit board 62, and printed circuit board 63 on one side, the remaining components can be encapsulated more compactly, making it more suitable for compact product designs. The fact that the integrated circuit chip 61, flexible printed circuit board 62, and printed circuit board 63 are exposed on one side facilitates installation, repair, and replacement by technicians, simplifying the maintenance process, reducing maintenance costs, and enabling future hardware upgrades or replacements.

[0089] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A double-sided display module, characterized in that, include: Rigid substrate; A flexible display panel, wherein the flexible display panel is disposed on both sides of the rigid substrate; A polarizing layer, two polarizing layers are disposed corresponding to the two flexible display panels, and the polarizing layer is disposed on the side of the flexible display panel away from the rigid substrate; A double-sided adhesive layer, wherein two layers of the double-sided adhesive layer are disposed correspondingly to two layers of the polarizing layer, and the double-sided adhesive layer is connected to the side of the polarizing layer opposite to the flexible display panel; The cover plate, two cover plates are correspondingly disposed with two layers of double-sided adhesive, and the cover plate is connected to the side of the double-sided adhesive layer that is away from the polarizing layer; Electronic components, the electronic components being connected to the two flexible display panels; as well as An adhesive layer is located between the two cover plates and is disposed around the rigid substrate, the flexible display panel, the polarizing layer, and the double-sided adhesive layer.

2. The double-sided display module as described in claim 1, characterized in that, The electronic components include an integrated circuit chip, a flexible printed circuit board, and a printed circuit board. The integrated circuit chip and the flexible printed circuit board are connected to the flexible display panel, and the flexible printed circuit board is connected to the printed circuit board.

3. The double-sided display module as described in claim 2, characterized in that, The integrated circuit chip is provided in two parts, and the two integrated circuit chips are respectively disposed on two flexible display panels. The flexible printed circuit board is provided in two parts, one end of the two flexible printed circuit boards is respectively connected to the two flexible display panels, and the other end of the two flexible printed circuit boards is respectively connected to one of the printed circuit boards.

4. The double-sided display module as described in any one of claims 1 to 3, characterized in that, The electronic component extends outward along one side of the flexible display panel, and the encapsulating layer is disposed on the side of the flexible display panel located outside the electronic component.

5. The double-sided display module as described in any one of claims 1 to 3, characterized in that, Two flexible display panels are provided, and the two flexible display panels are respectively disposed on both sides of the rigid substrate; Alternatively, the flexible display panel may have a folded arrangement that covers both sides of the rigid substrate.

6. The double-sided display module as described in any one of claims 1 to 3, characterized in that, The cover plate, the flexible display panel, the polarizing layer, and the double-sided adhesive layer located on both sides of the rigid substrate are symmetrically arranged along the rigid substrate.

7. The double-sided display module as described in any one of claims 1 to 3, characterized in that, The rigid substrate includes a glass substrate; and / or, the cover plate is made of glass; and / or, the double-sided adhesive layer is made of UV-curable adhesive.

8. A method for manufacturing a double-sided display module, characterized in that, The manufacturing method includes: A screen body is provided, the screen body comprising a rigid substrate and a flexible display panel, wherein the flexible display panel is disposed on both sides of the rigid substrate; Two polarizing layers are respectively disposed on the side of the two flexible display panels that are away from the rigid substrate; The electronic components are mounted on the two flexible display panels; Two double-sided adhesive layers are respectively attached to the side of the two polarizing layers away from the flexible display panel; The two cover plates are respectively attached to the two double-sided adhesive layers; An adhesive layer is disposed between the two cover plates, and the adhesive layer surrounds the rigid substrate, the flexible display panel, the polarizing layer, and the double-sided adhesive layer.

9. The method for manufacturing a double-sided display module as described in claim 8, characterized in that, Two flexible display panels are provided, and the two flexible display panels are respectively disposed on both sides of the rigid substrate; Alternatively, the flexible display panel may have a folded arrangement that covers both sides of the rigid substrate.

10. The method for manufacturing a double-sided display module as described in claim 8, characterized in that, The step of mounting the electronic components onto the two flexible display panels specifically includes: Two integrated circuit chips are respectively mounted on the two flexible display panels; One end of each of the two flexible printed circuit boards is respectively mounted on the two flexible display panels; The other ends of the two flexible printed circuit boards are connected to the same printed circuit board.

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