Preparation method of directional sound production screen and directional sound production screen

Abstract

The invention relates to the technical field of display devices, discloses a preparation method of a directional sound production screen and the directional sound production screen, and effectively solves the problems that in the prior art, when a sound production plate and a display assembly are attached, attachment is not smooth, bubbles remain, and bonding is not firm through a specific optical cement coating mode and a standing self-leveling process. According to the method, vacuumizing or pressing is not needed, it can be ensured that the vibration performance of the sound production plate is not affected, meanwhile, the production efficiency and the product quality of the directional sound production screen are improved, and the method has remarkable practical value and wide application prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of display devices, and in particular, to a method for preparing a directional sound - emitting screen and a directional sound - emitting screen. Background Art

[0002] With the continuous development of display technology, as a new type of display device integrating display and sound - emitting functions, the directional sound - emitting screen has gradually attracted attention. The directional sound - emitting screen can directly transmit sound to users through a vibrating sound - emitting plate without using a traditional loudspeaker, and has the advantages of a compact structure, high space utilization rate, good sound directivity, etc., and is widely used in fields such as smart phones, tablet computers, and smart wearable devices.

[0003] However, in the preparation process of the existing directional sound - emitting screen, there are some problems in the bonding process between the sound - emitting plate and the display component. Due to the vibration characteristics of the sound - emitting plate, the bonding process cannot be carried out under vacuum, otherwise it will affect the vibration performance of the sound - emitting plate; at the same time, the traditional pressing process cannot be used either, because pressing may cause deformation or damage to the sound - emitting plate, thereby affecting the sound - emitting effect. This makes there are many problems in the bonding between the sound - emitting plate and the display component, such as uneven optical adhesive layer, residual bubbles, and insecure bonding, seriously affecting the performance and reliability of the directional sound - emitting screen.

[0004] Therefore, there is an urgent need for a new method for preparing a directional sound - emitting screen, which can achieve high - quality bonding between the sound - emitting plate and the display component without vacuumizing and pressing, solve the bonding problems in the prior art, and improve the production efficiency and product quality of the directional sound - emitting screen.

[0005] The above information is given as background information only to assist in understanding the present disclosure, and does not determine or admit whether any of the above content can be used as prior art relative to the present disclosure. Summary of the Invention

[0006] The present invention provides a method for preparing a directional sound - emitting screen and a directional sound - emitting screen to solve the problems existing in the prior art.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] In a first aspect, the present invention provides a method for preparing a directional sound - emitting screen, the method comprising:

[0009] S21. Provide a display component, an optical adhesive, and a directional sound - emitting plate to be bonded;

[0010] S22. Coat the optical adhesive on the display surface of the display component in a fishbone shape or a cross shape;

[0011] S23. Bond the directional sound - emitting plate to the display surface of the display component;

[0012] S24. Let it stand still so that the optical glue forms a flat optical glue layer between the display component and the directional sound plate in a self-leveling manner, obtaining a directional sound screen.

[0013] Further, in the method for preparing the directional sound screen, S24 includes:

[0014] S241. Let it stand still so that the optical glue forms a flat optical glue layer between the display component and the directional sound plate in a self-leveling manner;

[0015] S242. After standing still is completed, perform a curing treatment on the optical glue layer to obtain a directional sound screen.

[0016] Further, in the method for preparing the directional sound screen, in S242, the curing treatment includes any one of ultraviolet curing and thermal curing.

[0017] Further, in the method for preparing the directional sound screen, before S21, the method further includes:

[0018] S11. Provide a backlight panel, a display panel, a 3D lens, and an optical glue to be bonded;

[0019] S12. Bond the display panel to the light-emitting surface of the backlight panel;

[0020] S13. Coat the optical glue on the display surface of the display panel in a fishbone shape or a cross shape;

[0021] S14. Bond the 3D lens to the display surface of the display panel; one side surface of the 3D lens away from the display panel is continuously wavy;

[0022] S15. Let it stand still so that the optical glue forms a flat optical glue layer between the display panel and the 3D lens in a self-leveling manner, obtaining a display component.

[0023] Further, in the method for preparing the directional sound screen, the optical glue is an OCA glue.

[0024] Further, in the method for preparing the directional sound screen, after S24, the method further includes:

[0025] S25. Perform a performance test on the directional sound screen.

[0026] Further, in the method for preparing the directional sound screen, in S25, the performance test includes an acoustic performance test and an optical performance test.

[0027] Further, in the method for preparing the directional sound - emitting screen, after S25, the method further includes:

[0028] S26. Inspecting the appearance defects of the directional sound - emitting screen with qualified performance test results.

[0029] Further, in the method for preparing the directional sound - emitting screen, in S26, the appearance defects include scratches, bubbles, glue overflow, and whether the fitting is flat.

[0030] In a second aspect, the present invention provides a directional sound - emitting screen, which is prepared by using the method for preparing the directional sound - emitting screen provided in the first aspect as above.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The method for preparing a directional sound - emitting screen and the directional sound - emitting screen provided by the present invention effectively solve the problems of uneven fitting, residual bubbles, and insecure bonding existing in the fitting of the sound - emitting plate and the display component in the prior art through a specific optical glue coating method and a static self - leveling process; this method does not require vacuum pumping or pressing, can ensure that the vibration performance of the sound - emitting plate is not affected, and at the same time improves the production efficiency and product quality of the directional sound - emitting screen, having significant practical value and broad application prospects.

[0033] The present invention has other characteristics and advantages, which will be obvious from the accompanying drawings incorporated herein and the subsequent specific embodiments, or will be described in detail in the accompanying drawings incorporated herein and the subsequent specific embodiments. These accompanying drawings and specific embodiments are jointly used to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0035] Figure 1 is a flowchart of a method for preparing a directional sound - emitting screen provided in Embodiment 1 of the present invention;

[0036] Figure 2 is a flowchart of a method for preparing a directional sound - emitting screen provided in Embodiment 1 of the present invention;

[0037] Figure 3 is a structural schematic diagram of a directional sound - emitting screen provided in Embodiment 2 of the present invention.

[0038] Reference Signs:

[0039] Backlight panel 1, display panel 2, 3D lens 3, optical adhesive layer 4, and directional sound plate 5. Detailed Embodiments

[0040] To illustrate in detail the possible application scenarios, technical principles, specific implementable solutions, achievable objectives and effects of this application, etc., the following will be described in detail with reference to the specific examples listed and in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application, and thus are only examples and cannot be used to limit the protection scope of this application.

[0041] Referring to "embodiments" in this context means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The term "embodiment" that appears in various positions in the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or relevance to other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the various technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0042] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the technical field to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0043] In the description of this application, the phrase "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist. For example, A and / or B means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " in this article generally represents an "or" logical relationship between the associated objects before and after.

[0044] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary-secondary or order relationship, etc. between these entities or operations.

[0045] Without more limitations, in this application, the expressions such as "including", "comprising", "having" or other similar expressions used in the statements are intended to cover non-exclusive inclusion. These expressions do not exclude that there may be additional elements in the process, method or product including the said elements, so that the process, method or product including a series of elements may not only include those defined elements, but also include other elements not explicitly listed, or also include elements inherent to this process, method or product.

[0046] In this application, expressions such as "greater than", "less than", and "exceeding" are understood not to include the number itself; expressions such as "above", "below", and "within" are understood to include the number itself. In addition, in the description of the embodiments of this application, the meaning of "multiple" is two or more (including two), and similar expressions related to "many" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically defined.

[0047] In the description of the embodiments of this application, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the specific embodiment or the accompanying drawings. It is only for the convenience of describing the specific embodiments of this application or for the reader to understand, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of this application.

[0048] Unless otherwise clearly specified or limited, in the description of the embodiments of this application, the terms "installed", "connected", "connected", "fixed", "set", etc. should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two components or the interaction relationship between two components. For those skilled in the art to which this application belongs, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0049] Embodiment 1

[0050] Please refer to Figure 1 , which is a schematic flowchart of a method for preparing a directional sound emission screen provided in Embodiment 1 of the present invention. The method specifically includes the following steps:

[0051] S21. Provide a display component, an optical adhesive, and a directional sound emission plate to be bonded.

[0052] It should be noted that this is the starting step of the entire preparation process, aiming to prepare the necessary raw materials for the subsequent bonding operation and ensure that each component meets the requirements for preparing the directional sound emission screen in terms of specifications, performance, etc.

[0053] As the display function part of the directional sound screen, the display component determines the key display parameters such as screen resolution, color performance, brightness, etc. It is necessary to select the display component of the appropriate type (such as LCD, OLED, etc.), size and specification according to the design requirements of the product, and ensure that its surface is flat and defect-free to ensure the subsequent bonding effect and display quality.

[0054] Optical adhesive plays a key role in bonding and optical transmission during the bonding process. Optical adhesive needs to have good optical properties, such as high light transmittance and low haze, to ensure the clarity and color accuracy of the display; at the same time, it should also have appropriate viscosity, flexibility and weather resistance to meet the requirements of long-term stable use after bonding. Choose the appropriate model and specification of optical adhesive according to actual needs.

[0055] The directional sound board is the core component of the directional sound screen to achieve the sound function. Its unique vibration characteristics can convert electrical signals into sound signals and transmit them in a directional manner. When providing a directional sound board, it is necessary to ensure that its vibration performance meets the design standards, the surface is flat and smooth, and there is no damage or deformation to ensure good fit with the display component and normal sound.

[0056] S22, applying the optical adhesive on the display surface of the display assembly in a fishbone shape or a cross shape.

[0057] It should be noted that through the specific coating shape, the optical adhesive can be distributed more evenly and reasonably on the surface of the display component, which can better fill the gap between the display component and the directional sound plate in the subsequent bonding process, reduce the possibility of bubble generation, and provide favorable conditions for the subsequent self-leveling of the optical adhesive, thereby forming a flat and uniform optical adhesive layer.

[0058] Fishbone or cross-shaped coating: The choice of these two shapes is not random, but carefully designed. The fishbone shape has multiple branches that can radiate from the center to the surroundings, so that the optical glue is evenly distributed over a larger area; the cross shape takes the center as the origin and extends in four directions, which can also achieve a good coverage effect. In actual operation, professional coating equipment (such as dispensing machines, etc.) is used to accurately control the amount of optical glue, coating speed and path to ensure that the optical glue is evenly coated on the display surface of the display component in the predetermined fishbone or cross shape. During the coating process, care should be taken to avoid the optical glue overflowing the edge of the display component, while ensuring that the coating thickness is uniform and consistent to meet the requirements of subsequent bonding and optical performance.

[0059] S23, attaching the directional sound-emitting plate to the display surface of the display assembly.

[0060] It should be noted that this step realizes the physical combination of the display component and the directional sound - emitting panel, making the two closely fit together, laying a foundation for the subsequent curing of the optical adhesive to form a stable bonding layer, and thus completing the construction of the basic structure of the directional sound - emitting screen.

[0061] After the optical adhesive is coated, the directional sound - emitting panel is slowly and steadily placed on the display surface of the display component coated with the optical adhesive. During the placement process, it is necessary to ensure the accurate relative position between the directional sound - emitting panel and the display component, avoiding deviation or tilt to ensure the accuracy and quality of the fit. In addition, in order to reduce the bubbles that may be generated during the fitting process, some auxiliary means can also be adopted, such as slowly lowering the directional sound - emitting panel from one end to the other end, or gently pressing the edge of the directional sound - emitting panel with a flexible tool (this is not equal to the lamination in the prior art) to help discharge the possible air. However, it should be noted that the pressure applied during the operation should be appropriate to avoid damaging the vibration performance of the sound - emitting panel due to excessive pressure.

[0062] S24. Stand still to enable the optical adhesive to form a flat optical adhesive layer between the display component and the directional sound - emitting panel in a self - leveling manner, obtaining a directional sound - emitting screen.

[0063] It should be noted that this step utilizes the fluidity of the optical adhesive itself to automatically fill the tiny gaps and unevenness between the display component and the directional sound - emitting panel during the standing - still process, eliminate bubbles, and form a uniform, flat and firmly bonded optical adhesive layer, thereby improving the overall performance and reliability of the directional sound - emitting screen.

[0064] Specifically, the fitted display component and directional sound - emitting panel are placed in a suitable environment (such as a clean workshop with appropriate temperature and humidity), kept in a static state, and the optical adhesive is allowed to self - level under the action of its own surface tension and gravity. The length of the standing - still time depends on the properties of the optical adhesive used (such as viscosity, curing time, etc.), and usually requires a certain period of time (for example, several hours or even dozens of hours) to ensure that the optical adhesive flows sufficiently and reaches a stable state. During the standing - still process, external factors (such as vibration, dust, etc.) should be avoided from interfering with the fitted body to prevent affecting the self - leveling effect of the optical adhesive.

[0065] After sufficient standing - still, the optical adhesive will form an optical adhesive layer with a uniform thickness and a flat surface between the display component and the directional sound - emitting panel. This optical adhesive layer can not only firmly bond the two together, but also ensure good optical transparency, enabling the light emitted by the display component to pass through the optical adhesive layer smoothly to reach the directional sound - emitting panel, and at the same time ensuring that the sound emitted by the directional sound - emitting panel can be effectively transmitted, thereby obtaining a directional sound - emitting screen with excellent performance.

[0066] In an implementation manner of this embodiment, the S24 includes:

[0067] S241. Stand still to enable the optical adhesive to form a flat optical adhesive layer between the display component and the directional sound plate in a self-leveling manner;

[0068] S242. After standing still, perform a curing treatment on the optical adhesive layer to obtain a directional sound screen.

[0069] It should be noted that in this step, the optical adhesive is transformed from a liquid or semi-solid state to a solid state through the curing treatment to form a bonding layer with sufficient strength and stability, firmly bonding the display component and the directional sound plate together, thereby obtaining a reliable-performance directional sound screen. The cured optical adhesive layer should have good bonding properties, optical properties, and mechanical properties, and be able to withstand various external forces and environmental factors during subsequent use.

[0070] In S242, the curing treatment includes any one of ultraviolet curing and thermal curing.

[0071] It can be understood that no matter which curing method is adopted, it is necessary to ensure that the optical adhesive layer can be cured evenly. For ultraviolet curing, it is necessary to ensure that the ultraviolet light source can evenly irradiate the entire surface of the optical adhesive layer to avoid problems such as differences in bonding strength or inconsistent optical properties caused by uneven curing; for thermal curing, it is necessary to make the laminating component heat evenly in the oven, which can be achieved by reasonably designing the structure of the oven, adjusting the hot air circulation method, or using appropriate tooling fixtures.

[0072] Please refer to Figure 2 , in an implementation manner of this embodiment, before S21, the method further includes:

[0073] S11. Provide a backlight panel, a display panel, a 3D lens, and an optical adhesive to be laminated.

[0074] It should be noted that this step prepares the core raw materials for the subsequent laminating process, ensures that each component meets the preparation requirements of the display component in the directional sound screen in terms of specifications, performance, etc., and lays the foundation for the display component to have good display effects and specific functions.

[0075] As the light source providing component of the display component, the performance of the backlight panel directly affects key indicators such as the brightness and uniformity of the display screen. It is necessary to select a backlight panel of a suitable type (such as direct-lit, edge-lit), brightness, color temperature, and light emission uniformity according to the overall design requirements of the display component. At the same time, check whether there are defects such as scratches, bright spots, and shadows on the surface of the backlight panel to ensure that it can emit light normally and its light emission characteristics are stable.

[0076] The display panel is the core part for realizing image display, which determines display parameters such as the screen resolution, color expressiveness, contrast ratio, etc. According to the product positioning, select a display panel of the corresponding technology type (such as TFT-LCD, AMOLED, etc.), size and resolution, and ensure that its pixel arrangement is neat, without dead pixels, light leakage, etc., so as to ensure the clarity and color accuracy of the display screen.

[0077] The 3D lens is used to achieve the 3D display effect. Through a special optical structure, the left and right eyes receive different image information, so as to synthesize a three-dimensional picture in the brain. The 3D lens needs to have good optical transmittance, refractive index matching, and specific optical design parameters to meet the requirements of 3D display. In addition, it is necessary to check whether the surface of the 3D lens is flat and smooth, without scratches, deformation and other defects to avoid affecting the 3D display effect.

[0078] The optical glue plays a key role in bonding and optical transmission during the bonding process. It needs to have characteristics such as high light transmittance, low haze, appropriate viscosity, flexibility and weather resistance. High light transmittance can ensure the minimum loss of light when it is transmitted between components, and guarantee the brightness of the display screen; low haze can reduce light scattering and improve the clarity of the picture; appropriate viscosity can ensure firm bonding between components; flexibility can adapt to the small deformations of components caused by factors such as temperature changes; weather resistance can ensure the stable performance of the optical glue during long-term use. Select the appropriate type and specification of optical glue according to actual needs.

[0079] S12. Bond the display panel to the light-emitting surface of the backlight panel.

[0080] It should be noted that this step realizes the physical combination of the backlight panel and the display panel, so that the light emitted by the backlight panel can evenly irradiate the display panel, providing a stable and uniform light source for the display panel, thereby ensuring the brightness and uniformity of the display screen.

[0081] S13. Coat the optical glue on the display surface of the display panel in a fishbone shape or a cross shape.

[0082] It should be noted that through the specific coating shape, the optical glue is evenly distributed on the surface of the display panel, providing a good bonding foundation for the subsequent bonding with the 3D lens, reducing the generation of bubbles, and facilitating the subsequent self-leveling of the optical glue to form a flat and uniform optical glue layer, ensuring the display effect and the normal realization of the 3D display function.

[0083] S14. Bond the 3D lens to the display surface of the display panel; the surface of the 3D lens away from the display panel is continuously wavy.

[0084] It should be noted that this step realizes the bonding of the display panel and the 3D lens. By utilizing the special optical structure of the 3D lens, the light emitted by the display panel is refracted and separated by the 3D lens and enters the left and right eyes respectively, thereby realizing the 3D display effect. The continuous wavy surface design on the side of the 3D lens away from the display panel helps to further optimize the refraction path of light and improve the three-dimensional sense and clarity of the 3D display.

[0085] S15. Let it stand still so that the optical adhesive forms a flat optical adhesive layer between the display panel and the 3D lens in a self-leveling manner, obtaining a display assembly.

[0086] It should be noted that in this step, by utilizing the fluidity of the optical adhesive itself, during the standing process, it automatically fills the tiny gaps and unevenness between the display panel and the 3D lens, eliminates air bubbles, forms a uniform, flat and firmly bonded optical adhesive layer, improves the overall performance and reliability of the display assembly, and ensures the stable realization of the display effect and the 3D display function.

[0087] In an implementation manner of this embodiment, the optical adhesive is an OCA adhesive.

[0088] It should be noted that the light transmittance of the OCA adhesive can usually reach more than 98%, being almost completely transparent, which can minimize the loss of light during transmission, ensure that the light emitted by the display panel passes through the OCA adhesive layer with almost no obstruction to reach the 3D lens, and then present a clear and bright display picture. Whether it is text, image or video content, it can be displayed with high fidelity.

[0089] Moreover, the refractive index of the OCA adhesive can be well matched with the refractive indices of optical components such as the display panel and the 3D lens, reducing the reflection and refraction losses of light at the interface, improving the coupling efficiency of light, and ensuring the stability and consistency of the display effect.

[0090] In addition, the OCA adhesive has excellent bonding performance, can form a firm bonding interface between the display panel and the 3D lens, ensure their close combination, and is not prone to problems such as delamination and detachment. Even under external vibration, impact or long-term use, it can maintain a stable bonding state and ensure the overall structural integrity of the display assembly.

[0091] In an implementation manner of this embodiment, after the S24, the method further includes:

[0092] S25. Perform performance tests on the directional sound screen.

[0093] In the S25, the performance tests include acoustic performance tests and optical performance tests.

[0094] It should be noted that in this step, the acoustic performance test is to verify whether the acoustic function of the directional sound emission screen is normal and whether various acoustic indexes meet the design standards, so as to ensure that the product can achieve the directional propagation of sound as expected and provide users with a good auditory experience.

[0095] The optical performance test is to evaluate the optical performance of the display component in the directional sound emission screen, ensure that the display picture is clear, the color is accurate, and the brightness is uniform, provide users with a high-quality visual experience, and at the same time ensure the normal realization of the 3D display function.

[0096] In an implementation manner of this embodiment, after the S25, the method further includes:

[0097] S26. Check the appearance defects of the directional sound emission screen with qualified performance test results.

[0098] It should be noted that this step is to ensure that the appearance quality of the directional sound emission screen meets the standards, avoid affecting the overall aesthetics and market competitiveness of the product due to appearance defects, and at the same time reduce customer complaints and return rates caused by appearance problems.

[0099] In the S26, the appearance defects include scratches, bubbles, glue overflow, and whether the fitting is flat.

[0100] It should be noted that under sufficient light conditions, visual inspection, inspection with the aid of a magnifying glass or machine vision can be used to check various appearance defects of the directional sound emission screen.

[0101] In summary, through comprehensive performance testing and strict appearance defect inspection of the directional sound emission screen, the quality and reliability of the product can be ensured, the market competitiveness of the product can be improved, and the needs of users for high-quality display and acoustic products can be met.

[0102] Although terms such as directional sound emission plate and self-leveling are used more in this application, the possibility of using other terms is not excluded. Using these terms is only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

[0103] A preparation method of a directional sound emission screen provided by an embodiment of the present invention effectively solves problems such as uneven fitting, bubble residue, and weak bonding existing when a sound emission plate is attached to a display component through a specific optical glue coating method and a static self-leveling process; this method does not require vacuum pumping or pressing, can ensure that the vibration performance of the sound emission plate is not affected, and at the same time improves the production efficiency and product quality of the directional sound emission screen, and has significant practical value and broad application prospects.

[0104] Embodiment 2

[0105] Embodiment 2 of the present invention provides a directional sound emission screen, which is prepared by using the preparation method of the directional sound emission screen provided in the above-mentioned Embodiment 1.

[0106] The structure of the directional sound emission screen is as Figure 3 shown, and specifically includes a backlight panel 1, a display panel 2, a 3D lens 3, an optical adhesive layer 4, and a directional sound emission panel 5; wherein, the backlight panel 1, the display panel 2, the 3D lens 3, and the directional sound emission panel 5 are stacked in sequence from bottom to top; an optical adhesive layer 4 is provided between the display panel 2 and the 3D lens 3; another optical adhesive layer 4 is provided between the 3D lens 3 and the directional sound emission panel 5; the surface of the 3D lens 3 away from the display panel 2 is continuously wavy.

[0107] Specifically, during the preparation process of this directional sound emission screen, a series of key steps are strictly followed, from providing the display component, optical adhesive, and directional sound emission panel to be bonded, to coating the optical adhesive on the display surface of the display component in a specific fishbone shape or cross shape, then precisely bonding the directional sound emission panel to the display surface of the display component, and finally allowing the optical adhesive to form a flat adhesive layer in a self-leveling manner. The application of this preparation method not only ensures the tight bonding in structure and excellent performance of the directional sound emission screen, but also effectively solves many bonding problems existing in the prior art, thus significantly improving the production efficiency and product quality of the directional sound emission screen, enabling it to better meet the high-quality requirements of users for the integration of display and sound emission functions in practical applications.

[0108] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of this application, the patent protection scope of this application cannot be limited thereby. Any technical solutions obtained by equivalent structure or equivalent process substitution or modification based on the essential concept of this application and using the content recorded in the text and drawings of the specification of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are all included in the patent protection scope of this application.

Claims

1. A preparation method of a directional sound-emitting screen, characterized in that, The method includes: S21. Provide a display component, an optical adhesive, and a directional sound board to be bonded; S22. Coat the optical adhesive on the display surface of the display component in a fishbone shape or a cross shape; S23. Bond the directional sound board to the display surface of the display component; S24. Let it stand still so that the optical adhesive forms a flat optical adhesive layer between the display component and the directional sound board in a self-leveling manner, obtaining a directional sound screen.

2. The preparation method of the directional sound-emitting screen according to claim 1, wherein The S24 includes: S241. Let it stand still so that the optical adhesive forms a flat optical adhesive layer between the display component and the directional sound board in a self-leveling manner; S242. After the standing still is completed, perform a curing treatment on the optical adhesive layer to obtain a directional sound screen.

3. The preparation method of the directional sound emission screen according to claim 2, wherein, In the S242, the curing treatment includes any one of ultraviolet curing and thermal curing.

4. The preparation method of the directional sound emission screen according to claim 1, wherein Before the S21, the method further includes: S11. Provide a backlight panel, a display panel, a 3D lens, and an optical adhesive to be bonded; S12. Bond the display panel to the light-emitting surface of the backlight panel; S13. Coat the optical adhesive on the display surface of the display panel in a fishbone shape or a cross shape; S14. Bond the 3D lens to the display surface of the display panel; one side surface of the 3D lens away from the display panel is continuously wavy; S15. Let it stand still so that the optical adhesive forms a flat optical adhesive layer between the display panel and the 3D lens in a self-leveling manner, obtaining a display component.

5. The preparation method of the directional sound emission screen according to claim 1 or 4, characterized in that, The optical adhesive is an OCA adhesive.

6. The preparation method of the directional sound emission screen according to claim 1, wherein After the S24, the method further includes: S25. Perform a performance test on the directional sound screen.

7. The preparation method of the directional sound emission screen according to claim 6, characterized in that, In the S25, the performance test includes an acoustic performance test and an optical performance test.

8. The preparation method of the directional sound-emitting screen according to claim 6, characterized in that, After the S25, the method further includes: S26. Inspect the appearance defects of the directional sound screen with qualified performance test results.

9. The method for preparing the directional sound emission screen according to claim 8, wherein In the S26, the appearance defects include scratches, bubbles, glue overflow, and whether the bonding is flat.

10. A directional sound-emitting screen, characterized in that, Prepared by using the preparation method of the directional sound screen according to any one of claims 1-9.

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