Textile and sound output device

Abstract

The present invention provides a textile capable of controlling sound output. A textile according to the present application is characterized by being formed from a woven foil of an organic piezoelectric film.

Description

Textiles and audio output devices

[0001] The present invention relates to textiles and acoustic output devices.

[0002] In many industries, including interior design, fashion, and automobiles, there is a demand for incorporating electronic circuits into textiles (or articles that can be made from textiles), etc. One technology that can meet this demand is called smart textiles, which use textiles.

[0003] Japanese Patent Application Laid-Open No. 2022-143546

[0004] However, conventional techniques have not been able to provide textiles that allow control over acoustic output.

[0005] The present application has been made in view of the above, and aims to provide a textile that allows control of acoustic output.

[0006] The textile according to the present application is characterized in that it is formed by weaving a foil of an organic piezoelectric film.

[0007] According to one aspect of the embodiment, it is possible to provide a textile that allows control of acoustic output.

[0008] FIG. 1 is a diagram illustrating an example of the appearance of a woven fabric using a textile according to an embodiment. FIG. 2 is a diagram illustrating an example of the structure of a woven fabric using a textile according to an embodiment. FIG. 3 is a diagram illustrating an example (1) of a system configuration including a woven fabric using a textile according to an embodiment. FIG. 4 is a diagram illustrating an example (2) of a system configuration including a woven fabric using a textile according to an embodiment. FIG. 5 is a diagram illustrating an example (1) of an acoustic foil weaving according to an embodiment. FIG. 6 is a diagram illustrating an example (2) of an acoustic foil weaving according to an embodiment. FIG. 7 is a diagram illustrating an example (3) of an acoustic foil weaving according to an embodiment. FIG. 8 is a diagram illustrating an example (4) of an acoustic foil weaving according to an embodiment. FIG. 9 is a diagram illustrating an example of an acoustic foil size according to an embodiment. FIG. 10 is an explanatory diagram for explaining dielectric breakdown. FIG. 11 is a diagram illustrating an example of the relationship between the width of an acoustic foil and an electrode according to an embodiment. FIG. 12 is a diagram illustrating an example (1) of an electrode variation according to an embodiment. FIG. 13 is a diagram illustrating an example (2) of an electrode variation according to an embodiment. FIG. 14 is a diagram illustrating an example (3) of an electrode variation according to an embodiment. FIG. 15 is a diagram illustrating an example of a connector structure according to an embodiment. FIG. 16 is a diagram illustrating an example of a textile system configuration according to an embodiment. Fig. 17 is a diagram illustrating an example of the configuration of a sound output system according to an embodiment of the present invention, Fig. 18 is a hardware configuration diagram illustrating an example of a computer that realizes the functions of a sound output device.

[0009] Hereinafter, a mode for carrying out a textile and a sound output device according to the present application (hereinafter referred to as an "embodiment") will be described in detail with reference to the drawings. Note that the textile and the sound output device according to the present application are not limited to the embodiment. Furthermore, the same components in the following embodiments will be given the same reference numerals, and duplicated explanations will be omitted.

[0010] (Embodiments) [1. Example of Information Processing] Organic piezoelectric films using organic polymer materials are known to be capable of sound output like a speaker. For example, organic piezoelectric films using fluorine-based organic polymer materials are known to be distorted by electrical forces when a voltage is applied, as negatively charged regions are attracted to positively charged regions. Such organic piezoelectric films vibrate the air due to this distortion, thereby outputting sound. This phenomenon of distortion due to electrical forces is also known as the piezoelectric effect.

[0011] Furthermore, the sound pressure of the sound generated from the organic piezoelectric film is proportional to the volume of air displaced when the vibrating portion of the organic piezoelectric film (hereinafter sometimes referred to as the actuator) vibrates. When a voltage is applied to the organic piezoelectric film, the organic piezoelectric film expands in the planar direction (horizontal direction) and contracts in the thickness direction (vertical direction). More specifically, in the case of a piezoelectric element, the crystal orientation is determined by the direction of a poling process (a process in which polarization is generated by heating and then applying a voltage) that involves stretching or molecular orientation. Furthermore, when the stretching direction is the long axis of the organic piezoelectric film in the planar direction, it can be driven by particularly large expansion along the long axis in the planar direction. Although the displacement in the thickness direction is small, the volume of air displaced corresponds to the displacement of the organic piezoelectric film in the planar and thickness directions. In this case, if the ends of the organic piezoelectric film are held down, the organic piezoelectric film will attempt to expand in this state, deforming the shape of the organic piezoelectric film. The entire air displaced by the deformation of the organic piezoelectric film is converted into sound pressure, resulting in sound output. In this way, the organic piezoelectric film loses its shape and vibrates in the direction perpendicular to the surface, resulting in sound output. Furthermore, the greater the vibration in the direction perpendicular to the surface, the greater the sound pressure, resulting in a louder sound output. An organic piezoelectric film has the characteristic of becoming thinner as it expands laterally. When an organic piezoelectric film tries to stretch laterally, if the lateral direction is held down, it cannot stretch laterally, and therefore vibrates in the direction perpendicular to the surface.

[0012] In the following embodiments, the textile 10 is a textile using an organic piezoelectric film. The organic piezoelectric film according to the embodiment is, for example, an organic piezoelectric film in which a silver electrode is coated on an organic polymer material, such as a copolymer of VDF (vinylidene fluoride) and TrFE (trifluoroethylene). PVDF-TrFE is just one example, and the organic polymer material according to the embodiment does not need to be limited to this example. The electrode according to the embodiment is, for example, an electrode using a transparent conductive material, PEDOT / PSS (polyethylenedioxythiophene / polystyrene sulfonate). PEDOT / PSS is just one example, and the electrode according to the embodiment does not need to be limited to this example.

[0013] Furthermore, the organic piezoelectric film according to the embodiment may be, for example, a film with a polymer matrix made of PZT (lead zirconate titanate)-based nanoceramics. The use of nanoceramics is expected to improve performance. Furthermore, the organic piezoelectric film according to the embodiment may be, for example, a polymer film made of electrodes made of transparent conductive materials such as PEDOT / PSS or ITO (indium tin oxide). Since the foil portion of the organic piezoelectric film (hereinafter referred to as "acoustic foil") is transparent, improved design is expected. Note that these examples are merely examples, and the organic piezoelectric film according to the embodiment may not be particularly limited to these examples.

[0014] The textile 10 is a textile formed by weaving an organic piezoelectric film. For example, the textile 10 is a textile formed by weaving an acoustic foil. For example, the textile 10 is a textile formed by weaving an acoustic foil made by cutting an organic piezoelectric film into strips. Each of the acoustic foils cut in this way can be a speaker.

[0015] The textile 10 is a textile formed by weaving weft and warp threads together. For example, the textile 10 is a textile formed by weaving the weft and warp threads together using a weaving technique such as plain weave, twill weave, or satin weave.

[0016] The textile 10 is formed by weaving an acoustic foil into weft yarns. For example, the textile 10 is formed by weaving an acoustic foil into weft yarns of a fixed length determined by a loom. Note that the length of the warp yarns varies depending on the loom. The warp yarns are important, for example, for preventing the acoustic foil from coming off the woven fabric. The strength of the warp yarns' restraint can change the way the acoustic foil vibrates. The woven layer of the acoustic foil may be concentrated on the back, for example. Concentrating the acoustic foil on the back can create a difference in sound pressure, but allows for more flexible design options from the front. The woven layer of the acoustic foil is not limited to the back, but may be concentrated in the center or front, or may be interleaved. Furthermore, because the acoustic foil is woven only with weft yarns, unlike when an organic piezoelectric film is used in layers, a space is created in which other materials can be placed. This allows for easier sound transmission. This also has advantages depending on the application. For example, it can be used when listening to ambient sounds while also layering additional sounds.

[0017] The textile 10 is formed by weaving an organic piezoelectric film, so it can also be called a textile speaker. The textile speaker is formed by weaving a soft organic piezoelectric film. Furthermore, the sound field can be controlled by dividing and controlling the electrode area.

[0018] The textile 10 is characterized by not only being bendable, but also being soft enough to be rolled up because it is divided into acoustic foils. Because the soft organic piezoelectric film is cut and woven in only one direction (the weft direction), it can flexibly change shape (become soft) in the direction perpendicular to the organic piezoelectric film (the warp direction). Furthermore, the textile 10 is characterized by, for example, incorporating acoustic foil into the weft, making it easy to customize the size by extending the weave length. Furthermore, the textile 10 is characterized by, for example, being able to arrange acoustic foils at any desired interval, allowing it to be integrated horizontally with other materials and produce sound only in desired locations. In this case, sound is more easily transmitted through areas where acoustic foil is not arranged.

[0019] FIG. 1 is a diagram showing an example of the appearance of a woven fabric using a textile according to an embodiment. In FIG. 1, a textile 10 is attached in a curved shape to fixture J1. The horizontal direction in FIG. 1 is the warp direction of the textile 10, and the vertical direction in FIG. 1 is the weft direction of the textile 10. Acoustic foils P1 to P3 are arranged in parallel in the weft direction of the textile 10. In FIG. 1, for the sake of convenience, only acoustic foils P1 to P3 are labeled, but acoustic foils other than acoustic foils P1 to P3 are not limited to acoustic foils P1 to P3, and many other acoustic foils are arranged. Note that the textile in FIG. 1 is just one example, and does not need to be particularly limited when attached to a curved fixture such as that in FIG. 1.

[0020] FIG. 2 is a diagram showing an example of the structure of a woven fabric using a textile according to an embodiment. The "150 mm x 4200 mm" in FIG. 2 is an example of the planar area of ​​the textile 10, and the "180 mm x 4 mm" in FIG. 2 is an example of the planar area of ​​the acoustic foil. The textile 10 may be, for example, a textile formed by weaving weft yarns parallel to the short side of the plane of the textile 10. Comparing "150 mm" and "180 mm," the length of the acoustic foil is "30 mm" longer. In this way, slightly lengthening the acoustic foil (e.g., bending it in the vibration direction) enables vibrations that distort up and down, resulting in the output of sound. More precisely, the vibration direction is the electric field direction, since the acoustic foil actually vibrates simultaneously in both the electric field application direction and the planar direction perpendicular to the electric field application direction. Furthermore, the electric field direction is the direction of the electric field applied to the acoustic foil by electrodes installed to vibrate the acoustic foil. For example, making the short side of the textile slightly shorter than the length of the acoustic foil can output louder sound. Furthermore, since the sound pressure and sound directionality change depending on the bending angle and width of the fabric, the fabric housing itself may be treated as variable. The structure of the fabric shown in FIG. 2 is merely an example, and the structure is not particularly limited to this example. It should be noted that sound can be heard even with a single acoustic foil as long as it is about 4 mm wide. For example, textile 10 may be formed by weaving weft threads so that the acoustic foil distorts in the vibration direction (more precisely, the electric field direction).

[0021] FIG. 3 is a diagram showing an example (1) of a system configuration including a textile fabric according to an embodiment. The switcher in FIG. 3 is an element capable of switching voltage application on and off. In other words, it is an element that switches audio signals. Different switchers (switchers 1 to N) are connected to areas 1 to N in FIG. 3 . Controlling the switcher controls the voltage application to each area, so areas 1 to N are electrode areas. For example, it is possible to play different songs in each area, such as song A in area 1 and song B in area 2. Areas 1 to N may be areas corresponding to a single weft thread of the textile 10, or areas grouped together in units of a predetermined number of threads. In the former case, for example, if the textile 10 has 500 weft threads, 500 areas would be required, which would be cumbersome. Furthermore, the sound in each area may be quieter. In the latter case, areas 1 to N may be areas grouped together in units of 10 weft threads of the textile 10. The switcher enables local sound field control. The system configuration in FIG. 3 is an example, and the present invention is not limited to this example. For example, any method may be used as long as it is possible to control the voltage application to each electrode region. For example, as described above, a method using a switcher (or switch circuit) that switches audio signals may be used. Furthermore, as an example of a switcher, for example, a mechanical relay (a method that physically disconnects wiring) or an SSR (semiconductor relay) may be used. Furthermore, in FIG. 3, each switcher is controlled by a single sound source, but this example is not particularly limited, and the switcher may be controlled by multiple sound sources. Furthermore, the acoustic output of the textile 10 is controlled by, for example, a speaker of an acoustic foil arranged by cutting an organic piezoelectric film, a switcher, a sound source, and software that controls the sound source, the switcher, and the like.

[0022] FIG. 4 is a diagram showing an example (2) of a system configuration including a woven fabric using a textile according to an embodiment. While FIG. 1 shows the curved portion of fixture J1, fixture J1 is actually a fixture consisting of curved and straight portions, and textile 10 is attached to the entire fixture J1. In FIG. 4, the weft yarns of textile 10 are grouped together in units of a predetermined number, dividing the textile 10 into 12 electrode regions. A switcher is connected to each electrode region, enabling sound field control for each of the 12 electrode regions. That is, in FIG. 4, sound field control is possible over 12 channels. The electrode regions of channels 1 to 4 in FIG. 4 and the electrode regions of channels 9 to 12 in FIG. 4 are attached to the curved portion of fixture J1, and the electrode regions of channels 5 to 8 in FIG. 4 are attached to the straight portion of fixture J1. Note that the system configuration shown in FIG. 4 is merely an example, and the present invention is not limited to this example. For example, the fixture to which the textile 10 is attached is not limited to fixtures consisting of curved and straight portions, and may be fixtures of any shape. Also, for example, the number of electrode regions (number of channels) does not need to be particularly limited to this example. Furthermore, in the curved portion of fixture J1, sound gathers and focuses at the concave portions, while sound disperses to the surroundings at the convex portions. In addition, in FIG. 4, a control circuit and an amplifier are connected. Furthermore, the control box in FIG. 4 may include, for example, a microcontroller that receives signals from software, a switcher (e.g., a switcher using a mechanical relay), or the like.

[0023] FIG. 5 is a diagram showing an example (1) of acoustic foil weaving according to an embodiment. FIG. 5 shows the basic configuration of acoustic foil weaving. The shaded areas are acoustic foils. In FIG. 5, for convenience of illustration, only acoustic foils P1 to P3 are labeled, but acoustic foils other than P1 to P3 are not limited to acoustic foils P1 to P3, and many other acoustic foils are arranged. FIG. 6 is a diagram showing an example (2) of acoustic foil weaving according to an embodiment. FIG. 6 shows the case of a plain weave. FIG. 7 is a diagram showing an example (3) of acoustic foil weaving according to an embodiment. FIG. 7 shows the case of a twill weave. FIG. 8 is a diagram showing an example (4) of acoustic foil weaving according to an embodiment. FIG. 8 shows the case of a satin weave. In FIGS. 6 to 8, for convenience of illustration, only weft threads K1 and K2 and warp threads T1 and T2 are labeled, but acoustic foils other than weft threads K1 and K2 and warp threads T1 and T2 are not limited to weft threads K1 and K2 and warp threads T1 and T2, and many other weft threads / warp threads are arranged.

[0024] The width and length of the plane of the acoustic foil according to the embodiment do not need to be particularly limited, but increasing the aspect ratio between the width and length may result in sound pressure characteristics that are not proportional to the area. Figure 9 shows an example of the size of the acoustic foil according to the embodiment. Taking into account ease of weaving and design, it may be, for example, "180 mm x 4 mm." Furthermore, since the thinner the acoustic foil, the lower the driving voltage, it may be, for example, "80 μm." Furthermore, while thin-film lamination is expected to enable lower voltage while maintaining characteristics, it may also be implemented in a single layer, taking amplifier characteristics into consideration. Implementation in a single layer is expected to reduce costs.

[0025] The characteristics of acoustic foil can vary significantly depending on the electrode structure. Furthermore, depending on the electrode configuration, dielectric breakdown may occur at the edges. Figure 10 is an explanatory diagram illustrating dielectric breakdown. Dielectric breakdown occurs through the sheet in the case of organic piezoelectric film, but through the air in the case of acoustic foil. Therefore, while the breakdown voltage is 4000 V or higher in the case of organic piezoelectric film, the breakdown voltage is approximately 240 V in the case of acoustic foil. More specifically, the dielectric breakdown field strength of PVDF-TrFE material is 50 V / μm or higher, so an 80 μm-thick acoustic foil can be stable even at approximately 4000 V. However, the shortest short-circuit path at the edge is approximately 80 μm, and the dielectric breakdown field strength of air is approximately 3 V / μm, so dielectric breakdown can occur at approximately 240 V. Because thickness errors can occur during edge lowering, a voltage of 150 V or less may actually be preferable. Furthermore, if the edges are damaged during cutting, they become more fragile, and may break even at approximately 200 V. Examples of methods for avoiding dielectric breakdown include coating the edges with a protective coating, or printing electrodes at a narrower width and then cutting and weaving the printed material. Alternatively, electrodes may be positioned slightly offset from the edges of the acoustic foil. The textile 10 may be formed by weaving acoustic foils with electrodes positioned away from the edges of the acoustic foil.

[0026] FIG. 11 is a diagram illustrating an example of the relationship between the width of an acoustic foil and an electrode according to an embodiment. The electrode according to an embodiment may be printed to have a width narrower than that of the acoustic foil according to an embodiment. By making the width of the electrode narrower than that of the acoustic foil, the end of the electrode is located more inward than the end of the acoustic foil, making it less likely for breakdown to occur. Furthermore, when the applied voltage is V and the V / L value is approximately 30 or greater, where L (μm) is the shortest short-circuit distance between the top and bottom electrodes, the characteristics of the acoustic foil can be fully utilized. In the case of air, since the dielectric breakdown strength of air is 3 (V / μm), breakdown can occur when the V / L value is approximately 3 or less. For example, textile 10 may be formed by weaving a foil wider than the electrode, provided that the relationship between the shortest short-circuit distance between the electrodes and the applied voltage satisfies a predetermined condition.

[0027] FIG. 12 is a diagram showing an example (1) of an electrode variation according to an embodiment. FIG. 12 shows the case of electrode patterning. By further dividing and patterning the acoustic foil into regions, it is possible to produce sound only in specific regions. Since the thickness can be adjusted for each region, it is possible to control the sound field for each region. In this way, it is also possible to control the sound field not on a line-by-line basis but on a grid-by-grid basis. This makes it possible to control the local sound field on both a line-by-line basis and a grid-by-grid basis. The textile 10 may be, for example, a textile formed by weaving an acoustic foil with separated electrode regions. For example, the textile 10 may be a textile that allows control of the acoustic output for each electrode region.

[0028] FIG. 13 shows an example (2) of an electrode variation according to the embodiment. FIG. 13 shows the case of thin film lamination. A high voltage amplifier can place a heavy burden on the amplifier. For example, if the film thickness is halved and layers are stacked, the current doubles but the voltage is halved, making it possible to lower the voltage. The textile 10 may be, for example, a textile formed by weaving thin film laminated acoustic foil.

[0029] FIG. 14 is a diagram showing an example (3) of an electrode variation according to an embodiment. FIG. 14 shows the case of an exciter structure. When a vibrating portion (electrode) and an acoustic foil are bonded together and the entire structure is vibrated, the acoustic foil also vibrates in phase, making it possible to produce sound. By reducing the size of the vibrating portion, the electrode area can be reduced. For example, textile 10 may be a textile formed by weaving an acoustic foil with an exciter structure. For example, textile 10 may be a textile formed by weaving an acoustic foil including a vibrating portion narrower than the acoustic foil. Furthermore, for example, textile 10 may be a textile formed by weaving an acoustic foil including a vibrating portion narrower than the acoustic foil, provided that the relationship between the shortest short-circuit distance between electrodes and the applied voltage satisfies a predetermined condition.

[0030] A woven fabric using a textile according to an embodiment may be a woven fabric for any type of housing. In FIGS. 1 and 4 , a case in which a woven fabric using a textile according to an embodiment is a woven fabric for fixtures has been described as an example, but the example is not particularly limited to this. For example, a woven fabric using a textile according to an embodiment may be furniture, curtains, light shades, car interior linings, etc. Curtains may be used, for example, for vertical blinds. In this case, each blind serves as a speaker, for example. Furthermore, a woven fabric using a textile according to an embodiment may be a woven fabric with any structure. In FIGS. 1 and 4 , a case in which a woven fabric using a textile according to an embodiment is a woven fabric with a structure including curved portions and straight portions has been described as an example, but the example is not particularly limited to this. For example, a woven fabric using a textile according to an embodiment may be a woven fabric with a structure including portions such as surfaces, spheres, and arcs. Furthermore, adjusting the width of the textile so that the textile according to an embodiment buckles slightly can increase sound pressure.

[0031] The connector structure according to the embodiment may be, for example, a through-type structure or a structure using a magnetic snap. For example, the connector structure according to the embodiment may be a structure in which upper and lower electrodes are penetrated, or a structure in which they are sandwiched between magnets. FIG. 15 is a diagram showing an example of a connector structure according to the embodiment. FIG. 15 shows a through-type structure. By slightly shifting the top and bottom of the electrodes, holes can be drilled and the electrodes can be passed through to provide wiring. By shifting the electrodes in this way, electrode patterning becomes possible.

[0032] The electrode wiring according to the embodiment may be arranged, for example, on one side, front and back, or on top and bottom. For example, the electrode wiring according to the embodiment may be arranged so that one side is all positive and the other side is all negative. However, since a short circuit is likely to occur if the positive and negative terminals are close to each other on the upper or lower side, they may be arranged apart to prevent a short circuit. Furthermore, for example, the electrode wiring according to the embodiment may be arranged so that the upper side is all positive and the lower side is all negative. The electrode wiring according to the embodiment may be arranged, for example, on the top and bottom, on a surface (one side), or by dividing the area, but is not particularly limited to this example.

[0033] In the above embodiment, the textile 10 may cancel (mute) sound by emitting an opposite phase. For example, the textile 10 may cancel a portion of the output sound as an example of controlling the acoustic output.

[0034] In the above embodiment, an example has been described in which the horizontal direction of the attachment target, such as fixture J1, is the direction of the warp threads of the textile 10, and the vertical direction is the direction of the weft threads of the textile 10. However, this example is not particularly limited, and the horizontal direction of the attachment target may be the direction of the weft threads of the textile 10, and the vertical direction may be the direction of the warp threads of the textile 10. For example, the arrangement is not limited to the case in which the weft threads of the textile 10 are arranged parallel to the short side of the attachment target, such as fixture J1, and the warp threads of the textile 10 are arranged parallel to the long side, but the weft threads of the textile 10 may be arranged parallel to the long side of the attachment target, and the warp threads of the textile 10 are arranged parallel to the short side. However, it is possible that, even if the acoustic foil is intended to vibrate across the entire textile 10, only the vicinity of the electrode wiring is vibrated sufficiently. Therefore, in some cases, it may be better to arrange the weft threads of the textile 10 parallel to the short side and the warp threads of the textile 10 parallel to the long side.

[0035] 2. Configuration of Textile System A description will be given of a textile system 1 shown in Fig. 16. As shown in Fig. 16, the textile system 1 includes a textile 10, a control circuit 20, and software 30. Fig. 16 is a diagram showing an example configuration of the textile system 1 according to an embodiment. Note that the textile system 1 shown in Fig. 16 may include multiple textiles 10, multiple control circuits 20, and multiple pieces of software 30.

[0036] The textile 10 is, for example, a textile including a textile, an acoustic foil, a housing, and wiring.

[0037] The control circuit 20 is a control circuit including, for example, an amplifier, a switcher, and a controller.

[0038] The software 30 is, for example, software that controls a sound source, sound movement, etc. Furthermore, the software 30 may also control, for example, video, video movement, etc. in addition to the sound source, sound movement, etc. Furthermore, the software 30 may be, for example, software for the sound output device 100 described below.

[0039] 3. Configuration of the Sound Output System The sound output system 2 shown in FIG. 17 will be described. As shown in FIG. 17, the sound output system 2 includes a textile system 1 and a sound output device 100. The textile system 1 and the sound output device 100 are connected to each other via a predetermined communication network (network N) so as to be able to communicate with each other via wired or wireless communication. FIG. 17 is a diagram showing an example configuration of the sound output system 2 according to the embodiment. Note that the sound output system 2 shown in FIG. 17 may include a plurality of textile systems 1 and a plurality of sound output devices 100.

[0040] The sound output device 100 is an information processing device intended to control the sound output of the textile system 1. The sound output device 100 is realized, for example, by a server device or a cloud system. The sound output device 100 is also an information processing device, for example, a PC or a WS (Work Station), and performs processing based on information transmitted from the textile system 1 or the like via the network N.

[0041] 17 shows a case where the textile system 1 and the sound output device 100 are separate devices, but the textile system 1 and the sound output device 100 may be integrated. For example, the software 30 and the sound output device 100 may be integrated.

[0042] 4. Effects As described above, the textile according to the embodiment is characterized by being formed by weaving a foil of an organic piezoelectric film.

[0043] This makes it possible to provide textiles that can output sound like a speaker, for example. Also, it is possible to provide textiles that are not only bendable but also soft enough to be rolled up, because they are divided into acoustic foils.

[0044] The textile according to the embodiment is characterized in that it is formed by weaving a foil of an organic piezoelectric film into a weft.

[0045] This allows us to provide textiles that are soft because they are cut from soft organic piezoelectric film and woven in only one direction (the weft direction). Furthermore, because acoustic foil is used in the weft, we can provide textiles that can be easily customized in size by extending the weaving length.

[0046] The textile according to the embodiment is characterized in that it is formed by weaving weft yarns in parallel in the direction of the short side of the plane of the textile.

[0047] This makes it possible to provide a textile that can be easily customized in size by, for example, extending the weaving length.

[0048] The textile according to the embodiment is characterized in that it is formed by weaving weft yarns so that the foil is distorted in the direction of the electric field.

[0049] This makes it possible to provide, for example, a textile that can output sound in the direction of the electric field.

[0050] The textile according to the embodiment is characterized in that it is formed by weaving foils with separated electrode regions.

[0051] This makes it possible, for example, to provide a textile capable of localized acoustic output.

[0052] Furthermore, the textile according to the embodiment is characterized in that the acoustic output can be controlled for each electrode region.

[0053] This makes it possible to provide a textile that can output sound in grid units rather than line units, for example.

[0054] In addition, the textile according to the embodiment is characterized in that it is formed by weaving foil in which areas capable of acoustic output and areas incapable of acoustic output are separated by dividing and patterning the foil.

[0055] This makes it possible to provide a textile that is capable of localized acoustic output, for example, in areas where acoustic output is possible and areas where acoustic output is not possible.

[0056] The textile according to the embodiment is characterized in that it is formed by weaving thin film laminated foil.

[0057] This makes it possible to provide, for example, a textile that can be used at a lower voltage while maintaining its properties.

[0058] The textile according to the embodiment is characterized in that it is formed by weaving a foil having an exciter structure.

[0059] This makes it possible to provide a textile that allows the electrode area to be reduced by, for example, making the vibrating portion smaller.

[0060] Furthermore, the textile according to the embodiment is characterized in that it is formed by weaving foil that is wider than the electrodes when the relationship between the shortest short-circuit distance between the electrodes and the applied voltage satisfies a predetermined condition.

[0061] This makes it possible to provide, for example, a textile that appropriately takes into account the properties of the acoustic foil.

[0062] The textile according to the embodiment is characterized in that it is formed by weaving a foil including a vibrating portion having a width narrower than that of the foil.

[0063] This makes it possible to provide a textile that allows the electrode area to be reduced by, for example, making the vibrating portion smaller.

[0064] Furthermore, the textile according to the embodiment is characterized in that it is formed by weaving a foil in which an electrode is disposed at a position away from the end of the foil.

[0065] This makes it possible to provide a textile that can avoid insulation breakdown at the edges, for example.

[0066] The acoustic output device according to the embodiment is characterized by having a textile formed by weaving a foil of an organic piezoelectric film.

[0067] This may, for example, allow for control of the acoustic output of the textile.

[0068] 5. Hardware Configuration The sound output device 100 according to the above-described embodiment is realized, for example, by a computer 1000 configured as shown in Fig. 18. Fig. 18 is a hardware configuration diagram showing an example of a computer that realizes the functions of the sound output device 100. The computer 1000 has a CPU 1100, a RAM 1200, a ROM 1300, a HDD 1400, a communication interface (I / F) 1500, an input / output interface (I / F) 1600, and a media interface (I / F) 1700.

[0069] The CPU 1100 operates and controls each unit based on programs stored in the ROM 1300 or the HDD 1400. The ROM 1300 stores a boot program executed by the CPU 1100 when the computer 1000 starts up, programs that depend on the hardware of the computer 1000, and the like.

[0070] The HDD 1400 stores programs executed by the CPU 1100, data used by such programs, etc. The communication interface 1500 receives data from other devices via a predetermined communication network and sends it to the CPU 1100, and transmits data generated by the CPU 1100 to other devices via the predetermined communication network.

[0071] The CPU 1100 controls output devices such as a display and a printer, and input devices such as a keyboard and a mouse, via the input / output interface 1600. The CPU 1100 acquires data from the input devices via the input / output interface 1600. The CPU 1100 also outputs generated data to the output devices via the input / output interface 1600.

[0072] Media interface 1700 reads a program or data stored in recording medium 1800 and provides it to CPU 1100 via RAM 1200. CPU 1100 loads the program or data from recording medium 1800 onto RAM 1200 via media interface 1700 and executes the loaded program. Recording medium 1800 is, for example, an optical recording medium such as a DVD (Digital Versatile Disc) or a PD (Phase Change Rewritable Disc), a magneto-optical recording medium such as an MO (Magneto-Optical disk), a tape medium, a magnetic recording medium, or a semiconductor memory.

[0073] For example, when the computer 1000 functions as the sound output device 100 according to the embodiment, the CPU 1100 of the computer 1000 realizes the functions of the control unit by executing programs loaded onto the RAM 1200. The CPU 1100 of the computer 1000 reads and executes these programs from the recording medium 1800, but as another example, the CPU 1100 may obtain these programs from another device via a predetermined communication network.

[0074] [6. Other] Furthermore, among the processes described in the above embodiments, all or part of the processes described as being performed automatically can be performed manually, or all or part of the processes described as being performed manually can be performed automatically using known methods. In addition, the information including the processing procedures, specific names, various data, and parameters shown in the above documents and drawings can be changed as desired unless otherwise specified. For example, the various information shown in each drawing is not limited to the information shown in the drawings.

[0075] Furthermore, the components of each device shown in the figure are conceptual functional components and do not necessarily have to be physically configured as shown in the figure. In other words, the specific form of distribution and integration of each device is not limited to that shown in the figure, and all or part of them can be functionally or physically distributed and integrated in any unit depending on various loads, usage conditions, etc.

[0076] Furthermore, the above-described embodiments can be combined as appropriate within the scope of not causing any contradiction in the processing content.

[0077] Although some of the embodiments of the present application have been described in detail above with reference to the drawings, these are merely examples, and the present invention can be implemented in other forms that include the embodiments described in the Disclosure of the Invention section and that have undergone various modifications and improvements based on the knowledge of those skilled in the art.

[0078] REFERENCE SIGNS LIST 1 Textile system 2 Sound output system 10 Textile 20 Control circuit 30 Software 100 Sound output device N Network

Claims

1. A textile formed by weaving an organic piezoelectric film foil.

2. The textile according to claim 1, characterized in that it is formed by weaving an organic piezoelectric film foil into the weft yarn.

3. The textile according to claim 2, characterized in that it is formed by weaving the weft threads in parallel in the short side direction of the plane of the textile.

4. The textile according to claim 2, characterized in that it is formed by weaving the weft yarn so that the foil is distorted in the direction of the electric field.

5. The textile according to claim 1, characterized in that the electrode regions are formed by weaving the foil into sections.

6. The textile according to claim 5, characterized in that the acoustic output can be controlled for each of the electrode regions.

7. The textile according to claim 5, characterized in that it is formed by weaving said foil in which areas capable of acoustic output and areas not capable of acoustic output are separated by dividing and patterning the foil.

8. The textile according to claim 1, characterized in that it is formed by weaving said foil in a thin film laminate.

9. The textile according to claim 1, characterized in that it is formed by weaving said foil in an exciter structure.

10. The textile according to claim 9, characterized in that it is formed by weaving said foil including a vibrating portion having a width narrower than that of said foil.

11. The textile according to claim 1, characterized in that it is formed by weaving said foil having a width wider than the electrodes, when the relationship between the shortest short-circuit distance between the electrodes and the applied voltage satisfies a predetermined condition.

12. The textile of claim 1, formed by weaving said foil with electrodes disposed away from the ends of said foil.

13. An acoustic output device having a textile formed by weaving an organic piezoelectric film foil.

Images