Directional sound emitting component, manufacturing method thereof and display device

Abstract

The application provides a directional sound emitting assembly, a manufacturing method thereof and a display device. The directional sound emitting assembly comprises a first base film, a first electrode layer arranged on one side surface of the first base film, a plurality of spaced support columns arranged on the side of the first electrode layer away from the first base film, a functional base material arranged on the side of the support columns away from the first base film, the functional base material being a second base film or a first polarizing plate, and a second electrode layer arranged on the side of the support columns away from the first base film. Thus, the second base film or the first polarizing plate can be used to replace the insulating layer, so that the problems of electric breakdown, peripheral bulging and the like of the directional sound emitting assembly can be at least partially alleviated or even solved.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more specifically, to directional sound-emitting components, their manufacturing methods, and display devices. Background Technology

[0002] With social development and the continuous improvement of people's living standards, display technology has gradually entered thousands of households, and consumer electronics products such as mobile phones, tablets, laptops, and e-readers are becoming increasingly integrated into people's work, study, and daily life. In public places, information leakage and interference are constant concerns. To address this issue, visual privacy technology has emerged, solving the problem of visual information leakage. However, there has been no substantial breakthrough in sound privacy and interference prevention, which urgently needs to be addressed.

[0003] Therefore, current directional sound-emitting components, their manufacturing methods, and display devices still need improvement. Summary of the Invention

[0004] This invention is based on the inventor's discoveries and understanding of the following facts and problems:

[0005] Current directional sound-generating devices suffer from significant variations in insulation layer thickness, resulting in localized bulges and poor voltage withstand capability. This makes them prone to electrical breakdown and burnout in certain areas. Furthermore, compared to the display area, the peripheral area of ​​current directional sound-generating devices exhibits a larger step difference (approximately 50μm to 100μm), leading to slow exhaust and peripheral bulges. Extensive research by the inventors has revealed that a base film or polarizer can replace the insulation layer, or an inorganic insulation layer or a combination of inorganic and organic insulation layers can replace the organic insulation layer in related technologies. This would at least partially improve the electrical breakdown and peripheral bulge problems in directional sound-generating components.

[0006] In view of this, the present invention aims to at least partially solve one of the technical problems in the related art.

[0007] In one aspect, the present invention provides a directional sound-generating component. According to an embodiment of the present invention, the directional sound-generating component includes: a first base film; a first electrode layer disposed on one side surface of the first base film; a plurality of spaced-apart support pillars disposed on the side of the first electrode layer away from the first base film; a functional substrate disposed on the side of the support pillars away from the first base film, the functional substrate being a second base film or a first polarizer; and a second electrode layer disposed on the side of the support pillars away from the first base film. Thus, a second base film or a first polarizer can be used instead of an insulating layer, thereby at least partially alleviating or even solving problems such as electrical breakdown and peripheral protrusions in the directional sound-generating component.

[0008] According to an embodiment of the present invention, the functional substrate is a second base film, the support pillar is disposed on one side surface of the second base film, and the second electrode layer is disposed on the surface of the second base film away from the support pillar. Thus, the support pillar can be formed on the surface of the second base film, the second base film has good flatness and thickness uniformity, and the steps for forming the insulating layer can be reduced, which is beneficial for improving problems such as electrical breakdown and peripheral protrusions in directional sound-generating components.

[0009] According to an embodiment of the present invention, the functional substrate is a first polarizer, the support pillar is disposed on the surface of the first electrode layer away from the first base film, and the second electrode layer is disposed on the side of the first polarizer away from the support pillar. This reduces the number of steps required to form the insulating layer, saving process time, and the first polarizer has better flatness, which is beneficial for improving the overall performance of the directional sound-generating component.

[0010] According to embodiments of the present invention, the directional sound-generating component satisfies at least one of the following conditions: the material of the first base film includes at least one of CPI, PET, PMMA, TAC, and COP; the material of the second base film includes at least one of CPI, PET, POL, PMMA, TAC, and COP; the height of the support pillar is 5μm to 15μm; the interval between two adjacent support pillars is 0.5mm to 2mm; the support pillar has a top and a bottom, both of which are circular, the diameter of the bottom is 15μm to 20μm, and the diameter of the top is 5μm to 12μm; the first electrode layer and the second electrode layer each independently include at least one of an indium tin oxide film layer and a silver film layer; the sheet resistance of the first electrode layer and the sheet resistance of the second electrode layer are each independently less than or equal to 20Ω. This is beneficial for further improving the overall performance of the directional sound-generating component.

[0011] According to an embodiment of the present invention, the directional sound-emitting component further includes: a first conductive layer disposed at the edge region of the surface of the first electrode layer away from the first base film; and a first insulating layer disposed on the side of the first conductive layer away from the first electrode layer, the first insulating layer covering the surface of the first conductive layer away from the first electrode layer. The first conductive layer being disposed at the edge region of the first electrode layer can improve the voltage uniformity when the first electrode layer is energized, making the entire electrode layer energized evenly, thereby reducing the voltage drop at the distal and proximal ends of the electrode layer; the first insulating layer can protect the first conductive layer.

[0012] According to an embodiment of the present invention, the directional sound-emitting component further includes: a second conductive layer; when the functional substrate is the second base film, the second conductive layer is disposed in the edge region of the surface of the second electrode layer away from the second base film; when the functional substrate is the first polarizer, the second conductive layer is disposed in the edge region of the surface of the first polarizer away from the support post, and the second electrode layer covers the surface of the second conductive layer away from the first polarizer and a portion of the surface of the first polarizer away from the support post. Thus, the provision of the second conductive layer allows for uniform electrification of the second electrode layer, effectively reducing the voltage drop at the near and far ends of the electrode layer.

[0013] According to an embodiment of the present invention, the functional substrate is a second base film, and the directional sound-generating component further includes: a second conductive layer disposed at the edge region of the surface of the second electrode layer away from the second base film; a second insulating layer comprising an inorganic insulator layer, the inorganic insulator layer covering the surface of the second conductive layer away from the second base film and a portion of the surface of the second electrode layer away from the second base film, and the support pillar disposed on the surface of the second insulating layer away from the second base film. Thus, the second insulating layer can protect the second conductive layer, and the second insulating layer can have good flatness and thickness uniformity, which is beneficial for fabricating the support pillar thereon; the second insulating layer has a high breakdown voltage, which can further improve the stability of the directional sound-generating component.

[0014] According to an embodiment of the present invention, the second insulating layer further includes an organic insulator layer disposed on the surface of the inorganic insulator layer away from the second base film. This facilitates reduction of stress in the first insulating layer and further improves the stability of the second insulating layer.

[0015] In another aspect of the present invention, a method for manufacturing the aforementioned directional sound-generating component is provided. According to an embodiment of the present invention, the method for manufacturing the aforementioned directional sound-generating component includes: forming a first electrode layer on one side surface of a first base film; forming a plurality of spaced-apart support pillars on the side of the first electrode layer away from the first base film; providing a functional substrate, the functional substrate being a second base film or a first polarizer; forming a second electrode layer on one side of the functional substrate, such that the functional substrate is disposed opposite to the first base film, the second electrode layer being disposed on the side of the support pillars away from the first base film. Thus, the directional sound-generating component manufactured using the above method possesses all the features and advantages of the aforementioned directional sound-generating component, which will not be repeated here.

[0016] According to an embodiment of the present invention, the method for manufacturing the aforementioned directional sound-generating component further includes: forming a first conductive layer in an edge region of the surface of the first electrode layer away from the first base film; and forming a first insulating layer on the side of the first conductive layer away from the first electrode layer, the first insulating layer covering the surface of the first conductive layer away from the first electrode layer. This improves the uniformity of electrical charge distribution across the entire electrode layer, thereby enhancing the overall performance of the directional sound-generating component.

[0017] According to an embodiment of the present invention, the method for manufacturing the aforementioned directional sound-generating component further includes: forming a second conductive layer, wherein, when the functional substrate is the second base film, the second conductive layer is formed in the edge region of the surface of the second electrode layer away from the second base film; and when the functional substrate is the first polarizer, the second conductive layer is formed in the edge region of the surface of the first polarizer away from the support post. Therefore, the provision of the second conductive layer helps to improve the uniformity of electrical charge on the second electrode layer, thereby further improving the overall performance of the directional sound-generating component.

[0018] According to an embodiment of the present invention, the functional substrate is the second base film, and the method for manufacturing the aforementioned directional sound-emitting component further includes: forming a second conductive layer in the edge region of the surface of the second electrode layer away from the second base film; forming a second insulating layer on the side of the second conductive layer away from the second base film, the second insulating layer comprising an inorganic insulator layer, the inorganic insulator layer covering the surface of the second conductive layer away from the second base film and a portion of the surface of the second electrode layer away from the second base film, and the support pillar disposed on the surface of the second insulating layer away from the second base film. Thus, the provision of the second conductive layer can improve the uniformity of the current supply to the second electrode layer, the second insulating layer can protect the second conductive layer, and the second insulating layer has a high breakdown voltage, which can further improve the overall performance of the directional sound-emitting component.

[0019] According to an embodiment of the present invention, the method for manufacturing the aforementioned directional sound-generating component satisfies at least one of the following conditions: the step of forming a plurality of spaced support pillars includes: slit coating, exposure, and development; the first electrode layer is formed by sputtering at a sputtering temperature of less than or equal to 120°C; the second electrode layer is formed by sputtering at a sputtering temperature of less than or equal to 120°C; the first conductive layer is formed by sputtering at a sputtering temperature of less than or equal to 120°C; and the second conductive layer is formed by sputtering at a sputtering temperature of less than or equal to 120°C. Therefore, using a slit coating process to manufacture the support pillars allows for better height uniformity, which is beneficial for improving the performance of the directional sound-generating component; using a sputtering process to form the electrode layer and conductive layer allows for more uniform thickness of the electrode layer and conductive layer, thereby further improving the overall performance of the directional sound-generating component.

[0020] In another aspect, the present invention provides a display device. According to an embodiment of the present invention, the display device includes a display panel and the aforementioned directional sound-emitting component. Thus, the display panel possesses all the features and advantages of the aforementioned directional sound-emitting component, which will not be repeated here. In general, the display panel has good sound privacy performance and can also avoid causing sound interference to others. Attached Figure Description

[0021] Figure 1 A schematic diagram of a directional sound-emitting component according to an embodiment of the present invention is shown;

[0022] Figure 2 A schematic diagram of a directional sound-emitting component according to another embodiment of the present invention is shown;

[0023] Figure 3 A schematic diagram of the structure of a directional sound-emitting component according to yet another embodiment of the present invention is shown;

[0024] Figure 4 The image shows a physical example of a directional sound-emitting display device in the related technology that suffers from air bubbles and surrounding protrusions.

[0025] Figure 5 This shows a partial structural schematic diagram of a directional sound-generating component in the related technology;

[0026] Figure 6 A partial structural schematic diagram of a directional sound-emitting component according to an embodiment of the present invention is shown;

[0027] Figure 7 A schematic diagram of the structure of a directional sound-emitting component according to yet another embodiment of the present invention is shown;

[0028] Figure 8A schematic diagram of the structure of a directional sound-emitting component according to yet another embodiment of the present invention is shown;

[0029] Figure 9 A flowchart of a method for manufacturing a directional sound-emitting component according to an embodiment of the present invention is shown;

[0030] Figure 10 A flowchart of a method for manufacturing a directional sound-emitting component according to another embodiment of the present invention is shown;

[0031] Figure 11 A flowchart of a method for manufacturing a directional sound-emitting component according to yet another embodiment of the present invention is shown;

[0032] Figure 12 A schematic diagram of a display device according to an embodiment of the present invention is shown;

[0033] Figure 13 A schematic diagram of a display device according to another embodiment of the present invention is shown;

[0034] Figure 14 A schematic diagram of the structure of a display device according to yet another embodiment of the present invention is shown;

[0035] Figure 15 A flowchart illustrating a method for manufacturing a display device according to an embodiment of the present invention is shown;

[0036] Figure 16 A plan view of a display device according to an embodiment of the present invention is shown.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100: Directional sound-emitting component; 101: First conductive layer; 102: Second conductive layer; 103: First insulating layer; 104: First sealing adhesive; 110: First base film; 121: Second base film; 122: First polarizer; 130: First electrode layer; 140: Second electrode layer; 150: Support column; 151: Bottom; 152: Top; 160: Second insulating layer; 161: Inorganic insulator layer; 162: Organic insulator layer; 200: Display panel; 21 0: Second polarizer; 220: First substrate; 230: Thin film transistor layer; 240: Liquid crystal layer; 250: Color filter; 260: Black matrix; 270: Second substrate; 280: Second sealant; 300: Optical transparent adhesive; 1: Diaphragm; 2: Base film layer; 3: Upper electrode; 4: Lower electrode; 5: Upper conductive layer; 6: Lower conductive layer; 7: Upper insulating layer; 8: Lower insulating layer; 9: Adhesive layer; 10: Spacer; 1100: Display area; 1200: Peripheral area. Detailed Implementation

[0039] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in the art or in accordance with the product manual.

[0040] In one aspect of the invention, a directional sound-emitting component is provided. According to an embodiment of the invention, reference is made to... Figures 1 to 3 , Figures 6 to 8 The directional sound-emitting component 100 may include: a first base film 110, a first electrode layer 130, a functional substrate, a second electrode layer 140, and a plurality of spaced-apart support pillars 150. The first electrode layer 130 is disposed on one side surface of the first base film 110, the plurality of spaced-apart support pillars 150 are disposed on the side of the first electrode layer 130 away from the first base film 110, the functional substrate is disposed on the side of the support pillars 150 away from the first base film 110, and the functional substrate may be a second base film 121 or a first polarizer 122. The second electrode layer 140 is disposed on the side of the support pillars 150 away from the first base film 110. Therefore, by using a second base film or a first polarizer instead of an insulating layer, the second base film or second polarizer has better flatness and fewer defects, which can at least partially alleviate or even avoid problems such as localized bulges and poor pressure resistance leading to regional electrical breakdown and burnout; it can also reduce the step difference between the peripheral area and the display area, thereby improving problems such as slow exhaust speed and peripheral bulges.

[0041] According to some embodiments of the present invention, reference Figure 1 , Figure 2 and Figure 6 In the directional sound-emitting component 100, the functional substrate can be a second base film 121, a support pillar 150 is disposed on one side surface of the second base film 121, and a second electrode layer 140 is disposed on the surface of the second base film 121 away from the support pillar 150. Thus, the second base film can be used as the functional substrate, and a second electrode layer and support pillar are formed on the surface of the second base film. The second base film has good thickness uniformity and good surface flatness, which can alleviate problems such as localized protrusions and poor pressure resistance leading to electrical breakdown and burnout. Furthermore, forming the second electrode layer and support pillar on the surface of the second base film can reduce the process steps for forming an insulating layer on the side of the second base film, which is beneficial to improving the product manufacturing yield. It can also reduce the step difference between the peripheral area and the display area, thereby improving problems such as slow exhaust and peripheral protrusions.

[0042] According to other embodiments of the present invention, reference is made to Figure 3In the directional sound-emitting component 100, the functional substrate can be a first polarizer 122, the support pillar 150 is disposed on the surface of the first electrode layer 130 away from the first base film 110, and the second electrode layer 140 is disposed on the side of the first polarizer 122 away from the support pillar 150. Thus, the first polarizer can act as an insulating layer, with uniform thickness, a smooth surface, and few defects, effectively avoiding problems such as uneven insulating layer thickness and local protrusions causing electrical breakdown and burnout in related technologies. Simultaneously, reducing the manufacturing process of one insulating layer improves process efficiency, reduces the probability of defects, and also reduces the step difference between the peripheral area and the display area, thereby improving problems such as slow exhaust and peripheral protrusions.

[0043] The working principle of the directional sound generation component is described below: An audio signal is input to the driver board, where the DSP (Digital Signal Processor) processes the audio signal, modulates it to the ultrasonic frequency band of around 80kHz, amplifies the signal, and sends it to the directional sound generation component. When the amplified mixed signal is applied to the first and second electrode layers, the electric field between the first and second electrode layers generates a Coulomb force. The Coulomb force drives the first base diaphragm (diaphragm) to vibrate at the frequency of the mixed signal, generating corresponding ultrasonic waves. After being emitted from the screen, the ultrasonic waves have strong directivity and propagate in a near-straight line in the air. During their propagation along their propagation axis, the ultrasonic waves continuously demodulate audible audio signals through nonlinear interactions. These continuously demodulated sound waves are superimposed and accumulated, eventually forming a virtual sound array at the transmitter. This virtual array of sound sources is called a parametric acoustic matrix. The parametric acoustic matrix allows for a continuous increase in the acoustic energy along the direction of the sound wave. Due to the strong directivity of ultrasound, the superposition effect of propagation in the main axis direction will be very weak. This results in the superposition and convergence of highly directional propagating sound waves in the main propagation direction. Thus, sound privacy can be achieved and sound interference to others can be avoided.

[0044] The following explanation, using the structures of directional sound-emitting components in related technologies and the directional sound-emitting component in this invention, will illustrate the reasons why directional sound-emitting components in related technologies suffer from problems such as large segment differences in the surrounding display area and local protrusions, and why the technical solution of this invention can at least alleviate or even solve the above problems to a certain extent:

[0045] refer to Figure 4 and Figure 5 ,Depend on Figure 4 It can be seen that the peripheral area of ​​the display device in the related technology has problems such as bubbles and bulges. (Refer to...) Figure 5In the related technology, a directional sound-generating component has an upper electrode 3 formed on one side surface of the diaphragm 1, an upper conductive layer 5 formed on the edge region of the upper electrode 3 away from the diaphragm 1, an upper insulating layer 7 formed on the surface of the upper conductive layer 5 away from the diaphragm 1, a lower electrode 4 formed on one side surface of the base film layer 2, a lower conductive layer 6 formed on the edge region of the lower electrode 4 away from the base film layer 2, a lower insulating layer 8 covering the surface of the lower conductive layer 6 away from the base film layer 2 and a portion of the surface of the lower electrode 4 away from the base film layer 2, and a spacer 10 formed on the surface of the lower insulating layer 8 away from the base film layer 2. Then, the structure on the diaphragm side and the structure on the base film layer side are bonded together by an adhesive layer 9 to form a directional sound-generating component. In related technologies, the upper conductive layer 5 and the lower conductive layer 6 are formed using silver paste, with a thickness typically around 25 μm. The upper insulating layer 7 and the lower insulating layer 8 are typically formed using organic insulating materials, with a thickness typically around 15 μm. The adhesive layer 9 is typically around 50 μm thick, and the spacer 10 is typically around 15 μm thick. Thus, in the peripheral area, the sum of the thicknesses of the upper conductive layer 5, the lower conductive layer 6, the upper insulating layer 7, the lower insulating layer 8, and the adhesive layer 9 is approximately 130 μm, while in the display area, the sum of the thicknesses of the lower insulating layer 8 and the spacer 10 is only about 30 μm. The difference between the peripheral area and the display area is relatively large, approximately 100 μm. The structures on the diaphragm side and the base film layer side are bonded together using a frame-mount method. There is air between the structures on both sides. The larger the cavity (gap) between the display area and the peripheral area, the more air is trapped. At the same time, the greater the distance between the upper and lower electrodes, the slower the air is expelled when the applied voltage is the same. Insufficient adsorption in the peripheral area can also cause peripheral protrusion. In addition, in related technologies, organic insulating materials are usually used to form the upper and lower insulating layers. The thickness uniformity is poor, the local thickness of the insulating layer is low and there are obvious local protrusions. The voltage withstand capability of this area is poor, and it is easy to cause point discharge, leading to problems such as electrical breakdown and burnout.

[0046] refer to Figure 6 Support pillars 150 are formed on the surface of the second base film 121. In the peripheral region, only the first conductive layer 101, the first insulating layer 103, and the first sealant 104 are disposed between the first electrode layer 130 and the second base film 121. In the display area, only support pillars 150 are disposed between the first electrode layer 130 and the second base film 121. Compared to Figure 5 The technical solution in the middle, Figure 6 In the technical solution, the step difference between the peripheral area and the display area can reduce the sum of the thickness of one insulating layer and one conductive layer. Therefore, the technical solution of the present invention can effectively alleviate or even solve problems such as slow air removal speed and peripheral protrusion. In addition, the second base film has good thickness uniformity and good flatness. The support pillars formed on the surface of the second base film can alleviate or even avoid problems such as electrical breakdown and burnout caused by poor local pressure resistance.

[0047] against Figure 3 In the technical solution described above, the support column 150 is formed on the surface of the first electrode layer 130 away from the first base film 110. The first electrode layer has good thickness uniformity and good flatness, and the first polarizer also has good flatness. At the same time, it can reduce the step difference between the peripheral area and the display area, which can also alleviate or even solve the above-mentioned technical problems in related technologies, and will not be elaborated here.

[0048] According to some embodiments of the present invention, reference Figures 1 to 3 , Figures 6 to 8 The directional sound-generating component 100 may further include: a first conductive layer 101 and a first insulating layer 103. The first conductive layer 101 is disposed in the edge region of the surface of the first electrode layer 130 away from the first base film 110, and the first insulating layer 103 is disposed on the side of the first conductive layer 101 away from the first electrode layer 130, covering the surface of the first conductive layer 101 away from the first electrode layer 130. When powered on, voltage is applied to the electrode layer. The first conductive layer has good conductivity, which can improve the uniformity of power application across the entire first electrode layer and reduce the voltage drop at the near and far ends of the first electrode layer, thereby improving the overall performance of the directional sound-generating component. The first insulating layer can protect the first conductive layer and also prevent direct electrical contact between the two electrode layers, thereby improving the stability of the directional sound-generating component.

[0049] According to some embodiments of the present invention, the directional sound-emitting component 100 may further include a second conductive layer 102, thereby improving the overall performance of the directional sound-emitting component. Referring to some specific embodiments of the present invention... Figure 1 and Figure 2 When the functional substrate is the second base film 121, the second conductive layer 102 is disposed in the edge region of the second electrode layer 140 away from the surface of the second base film 121, and the support pillar 150 is disposed on the surface of the second base film 121 away from the second electrode layer 140. According to other specific embodiments of the present invention, see reference to... Figure 3 When the functional substrate is the first polarizer 122, the support post 150 is disposed on the surface of the first electrode layer 130 away from the first base film 110, the second conductive layer 102 is disposed on the edge region of the surface of the first polarizer 122 away from the support post 150, and the second electrode layer 140 covers the surface of the second conductive layer 102 away from the first polarizer 122 and the part of the surface of the first polarizer 122 away from the support post 150.

[0050] According to some embodiments of the present invention, in the directional sound-emitting component 100, reference Figure 7 and Figure 8The functional substrate can be a second base film 121. The directional sound-emitting component 100 can further include a second conductive layer 102, which is disposed in the edge region of the surface of the second electrode layer 140 away from the second base film 121. The directional sound-emitting component 100 can further include a second insulating layer 160, which can include an inorganic insulator layer 161. The inorganic insulator layer 161 covers the surface of the second conductive layer 102 away from the second base film 121 and a portion of the surface of the second electrode layer 140 away from the second base film 121. The support pillar 150 is disposed on the surface of the second insulating layer 160 away from the second base film 121. Thus, the second insulating layer includes an inorganic insulator layer, which has a high dielectric constant and a high breakdown voltage, thereby helping to alleviate or even solve the problem of electrical breakdown and burnout that easily occurs in the directional sound-emitting component.

[0051] According to some specific embodiments of the present invention, reference is made to Figure 7 In the directional sound-generating component 100, the second insulating layer 160 may consist only of an inorganic insulator layer 161, and the support column 150 is disposed on the surface of the inorganic insulator layer 161 away from the second base film 121.

[0052] According to other specific embodiments of the present invention, reference is made to Figure 8 In the directional sound-generating component 100, the second insulating layer 160 may further include an organic insulator layer 162. The organic insulator layer 162 is disposed on the surface of the inorganic insulator layer 161 away from the second base membrane 121, and the support column 150 is disposed on the surface of the organic insulator layer 162 away from the second base membrane 121. Using a combination of inorganic and organic insulator layers to form the second insulating layer not only increases the breakdown voltage of the second insulating layer but also reduces the stress on the membrane material, preventing membrane rupture, thereby improving the stability of the directional sound-generating component and extending its service life.

[0053] According to embodiments of the present invention, the material of the first base film 110 may include at least one of CPI (transparent polyimide), PET (polyethylene terephthalate), PMMA (polymethyl methacrylate), TAC (cellulose triacetate), and COP (cyclic olefin polymer), that is, the first base film can be prepared from one of the above materials, or from two or more of the above materials. The first base film formed from the above materials all have good light transmittance, and the above materials all have good acid and alkali resistance and temperature resistance, which is beneficial to improving the overall performance of the directional sound-generating component.

[0054] According to embodiments of the present invention, the material of the second base film 121 may include at least one of CPI, PET, POL (polarizer, consisting of two TAC film layers sandwiching a PVA film layer, where PVA is polyvinyl alcohol), PMMA, TAC, and COP, that is, the second base film can be prepared from one of the above materials, or from two or more of the above materials. All of the above materials have good acid and alkali resistance and temperature resistance, and the second base film formed from the above materials has good light transmittance, which is beneficial for further improving the overall performance of the directional sound-generating component.

[0055] According to embodiments of the present invention, the first electrode layer 130 and the second electrode layer 140 each independently include at least one of an indium tin oxide (ITO) film layer and a silver film layer. Therefore, both the first electrode layer and the second electrode layer have good conductivity, which is beneficial for improving the performance of the directional sound-generating component. According to some embodiments of the present invention, the first electrode layer 130 and the second electrode layer 140 may each be independently a silver film layer (thickness can be 1 nm to 5 nm) or an ITO film layer (thickness can be about 100 nm). According to other embodiments of the present invention, the first electrode layer 130 and the second electrode layer 140 may each be independently composed of an ITO film layer (thickness about 25 nm), a silver film layer (thickness about 10 nm), and an ITO film layer (thickness about 25 nm) stacked sequentially.

[0056] According to some embodiments of the present invention, the thickness of the first electrode layer 130 and the thickness of the second electrode layer 140 can each be independently 1nm to 100nm. For example, the thickness of the first electrode layer can be 1nm, 3nm, 5nm, 10nm, 30nm, 50nm, 70nm, 100nm, etc., and the thickness of the second electrode layer can be 1nm, 3nm, 5nm, 10nm, 30nm, 50nm, 70nm, 100nm, etc. The above-mentioned electrode layers have a smaller sheet resistance, better conductivity, and good voltage consistency between the far end and near end of the electrode layer, which is beneficial to further improve the performance of the directional sound generation component.

[0057] According to an embodiment of the present invention, the sheet resistance of the first electrode layer 130 and the sheet resistance of the second electrode layer 140 can each be less than or equal to 20Ω. The smaller the sheet resistance of the electrode layer, the better the conductivity of the electrode layer, the better the voltage uniformity between the far end and near end of the electrode layer, the more consistent the vibration amplitude in different regions, and the higher the audible sound pressure level.

[0058] According to an embodiment of the present invention, reference Figure 1 and Figure 2The height H of the support column 150 can be 5μm to 15μm. For example, the height H of the support column 150 can be 5μm, 8μm, 10μm, 13μm, 15μm, etc. Therefore, the support column has a high support height, and there is a high cavity height between the first base membrane and the functional membrane material, which is more conducive to the vibration and sound generation of the first base membrane.

[0059] According to an embodiment of the present invention, reference Figure 1 and Figure 2 The interval d between two adjacent support columns 150 can be 0.5mm to 2mm. For example, the interval d between two adjacent support columns 150 can be 0.5mm, 0.8mm, 1mm, 1.2mm, 1.5mm, 1.7mm, 2mm, etc. Therefore, the appropriate interval between adjacent support columns is more conducive to improving the overall performance of the directional sound generation component.

[0060] According to an embodiment of the present invention, reference Figure 1 and Figure 2 The support column 150 has a top 152 and a bottom 151, both of which can be circular. It should be noted that the bottom 151 of the support column refers to the end of the support column that is in contact with the first base film, the second base film, the first polarizer, or the second insulating layer, while the other end is the top, which is not in contact with other film structures.

[0061] According to some embodiments of the present invention, reference Figure 1 The cross-section of the support column along its height direction can be rectangular. According to other embodiments of the present invention, refer to... Figure 2 The cross-section of the support column along the height direction can be trapezoidal. It should be noted that when the cross-section of the support column along the height direction is trapezoidal, the interval between two adjacent support columns refers to the interval between the bottoms of the two adjacent support columns.

[0062] According to some specific embodiments of the present invention, reference is made to Figure 2 The support column 150 has a top 152 and a bottom 151, both of which can be circular. The cross-section of the support column 150 along the height direction is trapezoidal. The diameter of the bottom 151 can be 15μm to 20μm, and the diameter of the top 152 can be 5μm to 12μm. For example, the diameter of the bottom 151 can be 15μm, 16μm, 17μm, 18μm, 19μm, 20μm, etc., and the diameter of the top 152 can be 5μm, 7μm, 9μm, 10μm, 12μm, etc. Thus, the support column has suitable dimensions, which can provide good support performance. Furthermore, the support column has good stability and is not easy to fall off, which is conducive to further improving the overall stability of the directional sound-generating component, thereby extending the service life of the directional sound-generating component.

[0063] According to some embodiments of the present invention, the materials of the first conductive layer 101 and the second conductive layer 102 can each independently include at least one of copper, silver, gold, titanium, etc. Therefore, both the first and second conductive layers have good conductivity. The first and second conductive layers are respectively disposed in the edge regions of the first and second electrode layers, which can improve the uniformity of voltage application on the first and second electrode layers, resulting in better voltage uniformity at the far and near ends of the first and second electrode layers, thereby further improving the overall performance of the directional sound-generating component. According to some embodiments of the present invention, the material forming the first conductive layer 101 can be silver, copper, or silver paste, etc., and the material forming the second conductive layer 102 can be silver, copper, or silver paste, etc., thereby reducing manufacturing costs, and the conductive layers formed by the above materials have good conductivity. According to other embodiments of the present invention, the material forming the first conductive layer 101 can be a copper-silver alloy, and the material forming the second conductive layer 102 can be a copper-silver alloy.

[0064] According to an embodiment of the present invention, the diagonal resistance of the first conductive layer 101 and the diagonal resistance of the second conductive layer 102 can each be less than or equal to 3Ω. The first conductive layer and the second conductive layer have low resistance and good conductivity, which is beneficial to further improve the uniformity of the voltage applied to the first electrode layer and the second electrode layer, thereby further improving the overall performance of the directional sound generation component.

[0065] According to an embodiment of the present invention, the thickness of the first conductive layer 101 and the thickness of the second conductive layer 102 can each be independently 1μm to 10μm. For example, the thickness of the first conductive layer 101 can be 1μm, 2μm, 5μm, 7μm, 10μm, etc., and the thickness of the second conductive layer 102 can be 1μm, 3μm, 5μm, 8μm, 10μm, etc. While meeting the diagonal resistance, the thickness of the first conductive layer and the second conductive layer can be reduced as much as possible, which is beneficial to reducing the step difference between the display area and the surrounding area of ​​the display device.

[0066] According to some embodiments of the present invention, the material forming the inorganic insulator layer 161 may include at least one of silicon nitride, silicon oxide, and silicon oxynitride. The inorganic insulator layer can be formed from the aforementioned inorganic materials, which possess good insulation properties and have a high dielectric constant and a high breakdown voltage, thereby contributing to improved overall performance of the directional sound-generating component. According to some specific embodiments of the present invention, the second insulating layer 160 may be composed solely of the inorganic insulator layer 161, that is, the second insulating layer 160 may be formed solely of at least one of silicon nitride, silicon oxide, and silicon oxynitride.

[0067] According to some embodiments of the present invention, the thickness of the inorganic insulator layer 161 can be 100nm to 600nm. For example, the thickness of the inorganic insulator layer 161 can be 100nm, 200nm, 300nm, 400nm, 500nm, 600nm, etc. Thus, the inorganic insulator layer has a suitable thickness, which is beneficial to improving the breakdown voltage of the second insulating layer, thereby helping to alleviate or even avoid the problem of electrical breakdown and burnout.

[0068] According to some embodiments of the present invention, the thickness of the organic insulator layer 162 can be 3μm to 10μm. For example, the thickness of the organic insulator layer 162 can be 3μm, 5μm, 6μm, 8μm, 10μm, etc. Thus, the organic insulator layer has a suitable thickness, which is beneficial to reducing the stress of the second insulation layer and thereby improving the tear resistance of the second insulation layer.

[0069] According to some embodiments of the present invention, the breakdown voltage of the second insulating layer 160 is greater than or equal to 400V. Therefore, the second insulating layer has good breakdown resistance, which is beneficial to improving the overall stability of the directional sound generation component and thus to extending the service life of the directional sound generation component.

[0070] According to an embodiment of the present invention, reference Figures 1 to 3 , Figures 6 to 8 The directional sound-emitting component 100 further includes a first sealing adhesive 104, which bonds the structure on the first base film side to the structure on the functional substrate side, thereby firmly bonding the structures on both sides. The specific material of the first sealing adhesive is not particularly limited in this invention; those skilled in the art can select and set it according to actual conditions, as long as it can firmly bond the structure on the first base film side and the structure on the functional substrate side.

[0071] In another aspect, the present invention provides a method for manufacturing the aforementioned directional sound-generating component. According to an embodiment of the present invention, the method for manufacturing the aforementioned directional sound-generating component may include the following steps:

[0072] S100: A first electrode layer is formed on one side surface of the first base film.

[0073] According to an embodiment of the present invention, in this step, a first base film 110 is provided, and a first electrode layer 130 is formed on one side surface of the first base film 110.

[0074] According to some embodiments of the present invention, the first electrode layer 130 can be formed by sputtering at a temperature of 120°C or less. This low-temperature sputtering process results in a first electrode layer with uniform composition and thickness, leading to good voltage consistency and improved overall performance of the directional sound-generating component. According to some specific embodiments of the present invention, an ITO film or a silver film can be formed on one side surface of the first base film 110 using a low-temperature sputtering process as the first electrode layer. According to other specific embodiments of the present invention, an ITO film, a silver film, and another ITO film can be sequentially formed on one side surface of the first base film 110 using a low-temperature sputtering process as the first electrode layer.

[0075] The characteristics of the first base film, the first electrode layer, such as material, thickness, and sheet resistance, have been described in detail above and will not be repeated here.

[0076] According to embodiments of the present invention, after forming the first electrode layer 130, a first conductive layer 101 can be formed in the edge region of the surface of the first electrode layer 130 away from the first base film 110. The first conductive layer 101 can be formed by sputtering, and the sputtering temperature can be less than or equal to 120°C. Therefore, the first conductive layer can be formed in the edge region of the first electrode layer by a low-temperature sputtering process. This process is mature and beneficial for improving product yield. Furthermore, using this process to form the first conductive layer makes it easier to control the width and thickness of the first conductive layer, thereby further improving the overall performance of the directional sound-generating component. According to some embodiments of the present invention, a copper film layer, a silver film layer, or a copper-silver alloy film layer can be formed in the edge region of the first electrode layer as the first conductive layer using a low-temperature sputtering process.

[0077] According to some embodiments of the present invention, after the first conductive layer 101 is formed, a first insulating layer 103 may be formed on the side of the first conductive layer 101 away from the first electrode layer 130. The first insulating layer 103 may cover the surface of the first conductive layer 101 away from the first electrode layer 130, thereby the first insulating layer may protect the first conductive layer.

[0078] S200: A plurality of spaced support pillars are formed on the side of the first electrode layer away from the first base film.

[0079] In this step, a plurality of spaced support pillars 150 are formed on the side of the first electrode layer 130 away from the first base film 110. The specific positions of the support pillars 150 can be set according to different situations.

[0080] According to an embodiment of the present invention, the step of forming a plurality of spaced support pillars 150 may include: slit coating, exposure, and development. Therefore, the support pillars can be fabricated using mature processes, which is beneficial for improving process yield.

[0081] S300: Provides a functional substrate, which is a second base film or a first polarizer.

[0082] In this step, a functional substrate is provided, wherein the functional substrate may be a second base film 121 or a first polarizer 122.

[0083] The material of the second base film 121 has been described in detail above and will not be repeated here.

[0084] S400: A second electrode layer is formed on one side of the functional substrate, such that the functional substrate is disposed opposite to the first base film, and the second electrode layer is disposed on the side of the support column away from the first base film.

[0085] According to an embodiment of the present invention, a second electrode layer 140 is formed on one side of the functional substrate, such that the functional substrate is disposed opposite to the first base film 110, and the second electrode layer 140 is disposed on the side of the support column away from the first base film 110.

[0086] Before fabricating directional sound-generating components, software simulations can be used to determine the optimal technical solution. First, simulation software such as Comsol Multiphysics can be used to determine the range of parameters for each layer in the directional sound-generating component design, outputting the overall technical solution and expected effects. Next, the geometric dimensions of the membrane, insulation layer, and support pillars, including thickness, length, width, and radius, are input into the simulation. Material parameters for the membrane, support pillars, and insulation layer, including coefficient of thermal expansion, Young's modulus, Poisson's ratio, density, and dielectric constant, are also input, and a voltage is applied. Then, the simulation outputs the frequency response curve of the ultrasound. Based on these characteristic parameters, the input values ​​are continuously optimized to determine the best solution. The following points should be considered regarding the parameters of the support columns: The top, bottom, and height of the support columns need to take into account the manufacturing process capabilities and the shielding ability of the black matrix. If the top or bottom dimensions of the support columns are too small, or the height of the support columns is too high, it may lead to problems such as the support columns collapsing or peeling off, as well as a decrease in the uniformity of the support columns. If the top or bottom dimensions of the support columns are too large, it may cause the black matrix to fail to form an effective shielding, resulting in a pitted appearance (the support columns should be placed in areas that can be shielded by the black matrix as much as possible to avoid the appearance of pitted defects under transmitted light). The height and spacing of the support columns have a certain impact on the audible sound pressure level. The larger the height and spacing of the support columns, the larger the amplitude of a single vibration unit and the higher the sound pressure level. It is also necessary to comprehensively consider the impact on the performance and reliability of the membrane material to avoid problems such as loss of membrane material deformation and device failure caused by excessive amplitude and sound pressure level.

[0087] The steps for manufacturing directional sound-generating components in some embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0088] According to some specific embodiments of the present invention, reference is made to Figure 9 The method for manufacturing a directional sound-emitting component 100 includes: forming a first electrode layer 130 on one side surface of a first base film 110; forming a first conductive layer 101 in an edge region of the first electrode layer 130 away from the first base film 110; then forming a first insulating layer 103 covering the surface of the first conductive layer 101 away from the first base film 110; providing a functional substrate, the functional substrate being a second base film 121; forming a second electrode layer 140 on one side surface of the second base film 121; forming a second conductive layer 102 in an edge region of the second electrode layer 140 away from the second base film 121; then forming a plurality of spaced-apart support pillars 150 on the surface of the second base film 121 away from the second electrode layer 140; arranging the first base film 110 and the second base film 121 opposite to each other, with the support pillars 150 located between the first electrode layer 130 and the second base film 121; and bonding the structures on the first base film side and the structures on the second base film side using a first sealing adhesive 104 to obtain the directional sound-emitting component 100. Therefore, the second base film has good flatness and certain support performance. The formation of support pillars on the surface of the second base film can reduce the steps of forming an insulating layer on the side of the second base film, which is conducive to improving the product yield. In addition, it is beneficial to reduce the step difference between the peripheral area and the display area, thereby avoiding problems such as peripheral protrusion. Furthermore, the second base film can also act as an insulating layer, which can at least alleviate or even solve the problem of electrical breakdown and burnout of directional sound-emitting components to a certain extent.

[0089] According to other specific embodiments of the present invention, reference is made to Figure 10The method for manufacturing a directional sound-emitting component 100 includes: forming a first electrode layer 130 on one side surface of a first base film 110; forming a first conductive layer 101 on the edge region of the first electrode layer 130 away from the first base film 110; then forming a first insulating layer 103 covering the surface of the first conductive layer 101 away from the first base film 110; and forming a plurality of spaced-apart support pillars 150 on the surface of the first electrode layer 130 away from the first base film 110; providing a functional substrate, the functional substrate being a first polarizer 122, wherein a first polarizer 122 has a first electrode layer 130 on the edge region of one side surface of the first polarizer 122. A second conductive layer 102 and a second electrode layer 140 are disposed on one side of the first polarizer 122. The second electrode layer 140 covers the surface of the second conductive layer 102 away from the first polarizer 122 and a portion of the surface of the first polarizer 122. The first base film 110 and the first polarizer 122 are arranged opposite to each other, and a support post 150 is disposed between the first base film 110 and the first polarizer 122. The second electrode layer 140 is disposed on the side of the first polarizer 122 away from the support post 150. The structure on the first base film side and the structure on the first polarizer side are bonded together using a first sealing adhesive 104 to obtain the directional sound-emitting component 100. Thus, the first polarizer can be used instead of the insulating layer. The first polarizer has better flatness, which helps to alleviate or even solve the problem of electrical breakdown and burnout in the directional sound-emitting component; it reduces the steps of forming the insulating layer, which helps to improve the product yield; and it can reduce the step difference between the peripheral area and the display area, thereby avoiding problems such as peripheral protrusions.

[0090] According to other specific embodiments of the present invention, reference is made to Figure 11The method for manufacturing a directional sound-emitting component 100 includes: forming a first electrode layer 130 on one side surface of a first base film 110; forming a first conductive layer 101 in the edge region of the first electrode layer 130 away from the surface of the first base film 110; then forming a first insulating layer 103, the first insulating layer 103 covering the surface of the first conductive layer 101 away from the first base film 110; providing a functional substrate, the functional substrate being a second base film 121; forming a second electrode layer 140 on one side surface of the second base film 121; forming a second conductive layer 102 in the edge region of the second electrode layer 140 away from the surface of the second base film 121; and forming a second insulating layer 160 on the side of the second conductive layer 102 away from the second base film 121. Specifically, an inorganic insulator layer 161 can be formed first, followed by... An organic insulator layer 162 is formed, and an inorganic insulator layer 161 covers the surface of the second conductive layer 102 away from the second base film 121 and a portion of the surface of the second electrode layer 140 away from the second base film 121. The organic insulator layer 162 covers the surface of the inorganic insulator layer 161 away from the second base film 121. Then, a plurality of spaced support pillars 150 are formed on the surface of the second insulating layer 160 away from the second base film 121. The structures on the first base film side and the second base film side are arranged opposite to each other. The support pillars are positioned between the first electrode layer 130 and the second insulating layer 160, and the second base film 121 is positioned on the side of the support pillars away from the first electrode layer. A first sealing adhesive 104 is used to bond the structures on the first base film side and the structures on the second base film side, resulting in a directional sound-generating component 100. Therefore, using an inorganic insulator layer as the insulating layer, or a combination of inorganic and organic insulator layers as the insulating layer, can effectively improve the breakdown resistance of the insulating layer, thereby at least partially alleviating or even solving the problems of electrical breakdown and burnout in directional sound-generating components.

[0091] According to some embodiments of the present invention, the second electrode layer 102 can be formed by sputtering at a temperature of 120°C or less. Using a low-temperature sputtering process to form the second electrode layer results in an electrode layer with uniform composition and thickness, giving it good voltage consistency and thus improving the overall performance of the directional sound-generating component. According to some specific embodiments of the present invention, an ITO electrode layer can be formed using a low-temperature sputtering process as the second electrode layer. According to other specific embodiments of the present invention, an ITO film layer, a silver film layer, and another ITO film layer can be sequentially formed using a low-temperature sputtering process as the second electrode layer. According to yet another specific embodiment of the present invention, a silver film layer can be formed using a low-temperature sputtering process as the second electrode layer.

[0092] According to some embodiments of the present invention, the second conductive layer 102 can be formed by sputtering at a temperature of 120°C or less. This allows for the formation of the second conductive layer in the edge region of the second electrode layer using a low-temperature sputtering process. This process is mature and beneficial for improving product yield. Furthermore, using this process to form the second conductive layer allows for better control of its width and thickness, thereby further improving the overall performance of the directional sound-generating component. The material, resistance, thickness, and other parameters of the second conductive layer 102 have been described in detail above and will not be repeated here.

[0093] According to some embodiments of the present invention, the inorganic insulator layer 161 can be formed by sputtering at a temperature of 120°C or less. Therefore, using a mature process to fabricate the inorganic insulator layer is beneficial for forming a uniform film and for improving product yield. The material, thickness, and other characteristics of the inorganic insulator layer have been described in detail above and will not be repeated here.

[0094] According to some embodiments of the present invention, the organic insulator layer 162 can be formed using a slot coating process or a screen printing process. This allows for the use of mature processes to manufacture the organic insulator layer, which is beneficial for improving product yield while reducing manufacturing costs. The characteristics of the organic insulator layer, such as its thickness, have already been described above and will not be repeated here.

[0095] Those skilled in the art should understand that after forming the directional sound-emitting component, a bonding process for the directional sound-emitting component may be included to form an FOC device (FPC On Gate, a device with driving circuitry). The specific bonding process is not particularly limited in this invention, and those skilled in the art can design it according to the actual situation.

[0096] In another aspect, the present invention provides a display device. According to an embodiment of the invention, reference is made to... Figures 12 to 14 The display device includes a display panel 200 and a front-mounted directional sound-emitting component 100. Therefore, this display device possesses all the features and advantages of the aforementioned directional sound-emitting component, which will not be repeated here. In summary, this display device has good directional sound emission performance and stability, can achieve sound privacy, and can avoid causing sound interference to others.

[0097] According to some embodiments of the present invention, reference Figures 12 to 14The display panel 200 and the directional sound-emitting component 100 can be bonded together using optically transparent adhesive 300. According to an embodiment of the present invention, the display panel 200 and the directional sound-emitting component 100 are bonded together using optically transparent adhesive 300. During this bonding process, a tensioning fixture can be used to ensure that the film material is stretched and flattened. Afterwards, driving hardware can be connected and algorithms integrated to enable the display device to emit sound and display normally.

[0098] According to some embodiments of the present invention, reference Figure 12 and Figure 14 The display panel 200 may include a second polarizer 210, a first substrate 220, a thin film transistor layer 230, a liquid crystal layer 240, a color filter 250, a black matrix 260, a second substrate 270, a first polarizer 122, and a second sealant 280.

[0099] According to other embodiments of the present invention, reference is made to Figure 13 The display panel 200 may include a second polarizer 210, a first substrate 220, a thin film transistor layer 230, a liquid crystal layer 240, a color filter 250, a black matrix 260, a second substrate 270, and a second sealant 280.

[0100] Those skilled in the art should understand that the color filter 250 may include sub-color filter layers of different colors for color display. According to some embodiments of the present invention, the first substrate 220 and the second substrate 270 may both be glass substrates to provide good support. The specific composition of the second sealing adhesive 280 is not particularly limited in this invention, and those skilled in the art can select it according to the actual situation.

[0101] The following is a detailed description. Figure 13 The manufacturing process of the display device in the document: Reference Figure 15A first electrode layer 130 is formed on one side surface of the first base film 110. A first conductive layer 101 is formed in the edge region of the first electrode layer 130 away from the first base film 110. A first insulating layer 103 is formed, covering the surface of the first conductive layer 101 away from the first base film 110. Then, a plurality of spaced support pillars 150 are formed on the surface of the first electrode layer 130 away from the first base film 110. A second polarizer 210 and a thin-film transistor layer 230 are formed on the first substrate 220. A color filter 250 and a black matrix 260 are formed on the second substrate 270. The first substrate 220 and the second substrate 270 are aligned and filled with liquid crystal. A second sealant 280 is used for sealing. A second electrode layer 140 is formed on the surface of the second substrate 270 away from the first substrate 220. A first insulating layer 103 is formed in the edge region of the second electrode layer 140 away from the first substrate 220. A second conductive layer 102 is formed. Then, a first polarizer 122 is attached to the side of the second conductive layer 102 away from the first substrate 220 using PSA adhesive (pressure-sensitive adhesive) or OCA adhesive (optical transparent adhesive). The first polarizer 122 covers the surface of the second conductive layer 102 away from the first substrate 220 and the part of the surface of the second electrode layer 140 away from the first substrate 220. The first base film 110 and the first polarizer 122 are arranged opposite to each other, and the support post 150 is located between the first base film 110 and the first polarizer 122. The first substrate 220 is disposed on the side of the first polarizer 122 away from the support post 150. A tensioning fixture is used to ensure that the film is stretched and flattened. The structure on the first base film side and the structure on the first polarizer side are bonded using the first sealing adhesive 104 to obtain the display device. The driver hardware is connected, the algorithm is integrated, and the integration of the display device is completed, so that the display device can emit sound and display normally. Fabricating a second electrode layer and a second conductive layer on a second substrate can reduce the manufacturing process of forming electrode and conductive layers on the polarizer, significantly reducing the performance requirements of the polarizer raw materials and overcoming problems such as the polarizer's inability to withstand high temperatures, organic solvents, and water absorption. At the same time, the first polarizer can act as an insulating layer, effectively avoiding electrical breakdown and burn-out problems caused by uneven insulating layer thickness and local protrusions. It also reduces the manufacturing process of one insulating layer, effectively improving the process yield and reducing the probability of defects. In addition, it can also reduce the step difference between the peripheral area and the display area, improving problems such as slow exhaust speed and peripheral protrusions.

[0102] According to an embodiment of the present invention, reference Figure 16 The display device includes a display area 1100 and a peripheral area 1200. The peripheral area 1200 is arranged around the display area 1100. Structures such as the first conductive layer 101, the second conductive layer 102, the first sealing adhesive 104, and the second sealing adhesive 280 are located in the peripheral area 1200.

[0103] According to embodiments of the present invention, there are no special requirements for the specific type of the display device described above. Those skilled in the art can flexibly select according to actual needs, such as display devices such as mobile phones, iPads, and laptops.

[0104] Those skilled in the art will understand that, in addition to the display panel and directional sound-emitting components described above, the display device also has the necessary structures and components of a conventional display device. Taking a mobile phone as an example, in addition to the display panel and directional sound-emitting components described above, it also includes the necessary structures and components such as the battery back cover, mid-frame, touch panel, audio module, and motherboard.

[0105] The terms "first" and "second" used in this document are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0106] In the description of this specification, the references to terms such as "one embodiment," "another embodiment," "yet another embodiment," "some embodiments," "other embodiments," "some specific embodiments," or "other specific embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0107] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A directional sound-emitting component, characterized in that, include: First base film; A first electrode layer is disposed on one side surface of the first base film; Multiple spaced support pillars are provided, the support pillars being disposed on the side of the first electrode layer away from the first base film; A functional substrate is disposed on the side of the support column away from the first base film, and the functional substrate is a second base film or a first polarizer; The second electrode layer is disposed on the side of the support post away from the first base film; The functional substrate is a second base film, the support pillar is disposed on one side surface of the second base film, and the second electrode layer is disposed on the surface of the second base film away from the support pillar; the material of the second base film includes at least one of CPI, PET, POL, PMMA, TAC and COP; it also includes a second conductive layer, which is disposed in the edge region of the surface of the second electrode layer away from the second base film; or, The functional substrate is a first polarizer, the support pillar is disposed on the surface of the first electrode layer away from the first base film, and the second electrode layer is disposed on the side of the first polarizer away from the support pillar; it also includes a second conductive layer, the second conductive layer is disposed on the edge region of the surface of the first polarizer away from the support pillar, and the second electrode layer covers the surface of the second conductive layer away from the first polarizer and the part of the surface of the first polarizer away from the support pillar.

2. The directional sound-emitting component according to claim 1, characterized in that, At least one of the following conditions must be met: The material of the first base film includes at least one of CPI, PET, PMMA, TAC, and COP; The height of the support column is 5μm~15μm; The interval between two adjacent support columns is 0.5mm to 2mm; The support column has a top and a bottom, both of which are circular. The diameter of the bottom is 15μm to 20μm, and the diameter of the top is 5μm to 12μm. The first electrode layer and the second electrode layer each independently include at least one of an indium tin oxide film layer and a silver film layer; The sheet resistance of the first electrode layer and the sheet resistance of the second electrode layer are each independently less than or equal to 20Ω.

3. The directional sound-emitting component according to claim 1, characterized in that, Further includes: A first conductive layer is disposed in the edge region of the surface of the first electrode layer away from the first base film; A first insulating layer is disposed on the side of the first conductive layer away from the first electrode layer, and the first insulating layer covers the surface of the first conductive layer away from the first electrode layer.

4. The directional sound-emitting component according to claim 1, characterized in that, The functional substrate is a second base film, and the directional sound-generating component further includes: A second conductive layer is disposed in the edge region of the surface of the second electrode layer away from the second base film; The second insulating layer includes an inorganic insulator layer that covers the surface of the second conductive layer away from the second base film and a portion of the surface of the second electrode layer away from the second base film. The support pillar is disposed on the surface of the second insulating layer away from the second base film.

5. The directional sound-emitting component according to claim 4, characterized in that, The second insulating layer further includes an organic insulator layer disposed on the surface of the inorganic insulator layer away from the second base film.

6. A method for manufacturing a directional sound-emitting component according to any one of claims 1 to 5, characterized in that, include: A first electrode layer is formed on one side surface of the first base film; Multiple spaced support pillars are formed on the side of the first electrode layer away from the first base film; A functional substrate is provided, wherein the functional substrate is a second base film or a first polarizer; A second electrode layer is formed on one side of the functional substrate, such that the functional substrate is disposed opposite to the first base film, and the second electrode layer is disposed on the side of the support column away from the first base film.

7. The method according to claim 6, characterized in that, Further includes: A first conductive layer is formed in the edge region of the surface of the first electrode layer away from the first base film; A first insulating layer is formed on the side of the first conductive layer away from the first electrode layer, and the first insulating layer covers the surface of the first conductive layer away from the first electrode layer.

8. The method according to claim 7, characterized in that, Further includes: Forming a second conductive layer, Wherein, when the functional substrate is the second base film, the second conductive layer is formed in the edge region of the surface of the second electrode layer away from the second base film; when the functional substrate is the first polarizer, the second conductive layer is formed in the edge region of the surface of the first polarizer away from the support post.

9. The method according to claim 7, characterized in that, The functional substrate is the second base film, and the method further includes: A second conductive layer is formed in the edge region of the surface of the second electrode layer away from the second base film; A second insulating layer is formed on the side of the second conductive layer away from the second base film. The second insulating layer includes an inorganic insulator layer. The inorganic insulator layer covers the surface of the second conductive layer away from the second base film and a portion of the surface of the second electrode layer away from the second base film. The support pillar is disposed on the surface of the second insulating layer away from the second base film.

10. The method according to claim 8 or 9, characterized in that, At least one of the following conditions must be met: The step of forming the multiple spaced support columns includes: slit coating, exposure, and development; The first electrode layer is formed by sputtering, with a sputtering temperature of less than or equal to 120°C; The second electrode layer is formed by sputtering at a temperature of 120°C or less. The first conductive layer is formed by sputtering at a temperature of 120°C or less. The second conductive layer is formed by sputtering at a temperature of less than or equal to 120°C.

11. A display device, characterized in that, include: Display panel; and The directional sound-emitting component according to any one of claims 1 to 5.

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