JP2009100223A - Organic electro-luminescent panel speaker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an organic EL panel speaker that achieves an reliable attachment of an oscillating actuator to an organic EL panel, and that improves characteristics of sound oscillation. <P>SOLUTION: An organic electro-luminescent panel speaker 1 has an organic electro-luminescent panel 3 and an oscillating actuator 41, wherein the oscillating actuator 41 is attached to a substrate 8 composing part of the organic electro-luminescent panel 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an organic electroluminescence panel speaker.

  In Patent Documents 1 to 3, as a kind of panel speaker, an organic electroluminescence panel (hereinafter referred to as “organic EL panel”) is attached with a vibration actuator that is a source of sound vibration such as a piezoelectric film and a voice coil. An organic electroluminescence panel speaker configured to output sound vibration such as sound from the display surface of an EL panel is disclosed.

JP 2003-211087 A JP 2005-12255 A JP 2003-125315 A

  By the way, when a vibration actuator as a sound vibration source is attached to the organic EL panel so as to output sound vibration from the display surface of the organic EL panel, a sound signal having a desired characteristic is output. It is necessary to securely attach the vibration actuator to the organic EL panel.

  However, the organic EL panel has a fragile configuration in which an electrode layer, an organic layer, and the like are laminated on a glass substrate as a substrate, and it is difficult to reliably attach a vibration actuator to the organic EL panel. Further, since the organic EL panel is originally for displaying an image, it is difficult to output sound vibration from the vibration actuator as sound vibration having a desired characteristic.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an organic EL panel speaker that can reliably attach a vibration actuator to an organic EL panel and can improve sound vibration characteristics.

  In order to solve the above-mentioned problem, the organic electroluminescence panel speaker has an organic electroluminescence panel and a vibration actuator, and the vibration actuator is attached to a substrate constituting a part of the organic electroluminescence panel.

  Another invention has an organic electroluminescence panel having a substrate and a sealing plate and a vibration actuator in order to solve the above-described problems, and the vibration actuator is attached to the sealing plate of the organic electroluminescence panel. It was decided.

  In another invention, in addition to the above-described invention, the sealing plate is attached to the main body of the organic electroluminescence panel via an adhesive layer.

In another invention, in addition to the above-mentioned invention, the sealing plate is made of glass, metal, or resin.

  In another invention, in addition to the above-described invention, the ratio of the thickness of the sealing plate to the substrate is such that the thickness of the sealing plate is greater than one fifth of the thickness of the substrate.

  In addition to the above-described invention, another invention is such that the sealing plate is bonded to the organic electroluminescence panel without forming a space.

  In another invention, in addition to the above-described invention, a space is formed between the sealing plate and the reflective layer of the organic electroluminescence panel.

  Further, in another invention, in addition to the above-described invention, a damping member is arranged in the space.

  Further, in another invention, in addition to the above-described invention, the damping member is a hygroscopic material.

  In another invention, in addition to the above-described invention, an inert gas is sealed in the space.

  In another invention, in addition to the above-described invention, the space is filled with a liquid.

  In another invention, in addition to the above-described invention, the space is filled with a gel substance.

  In another invention, in addition to the above-described invention, the organic electroluminescence panel is sealed with a sealing film.

  In another invention, in addition to the above-described invention, a vibration actuator is attached to the sealing film via a drive plate.

  In addition to the above-described invention, another invention includes a frame body that holds the organic electroluminescence panel, and at least a part of the vibration actuator is supported by the frame body.

  In another invention, in addition to the above-described invention, an acoustic capacity is provided on the back side of the organic electroluminescence panel.

  In another invention, in addition to the above-described invention, the sealing film is composed of an inorganic compound.

  In another invention, in addition to the above-described invention, the substrate is a metal plate.

In addition to the above-described invention, another invention uses an organic electroluminescence panel speaker as a lighting body.

  According to the present invention, the vibration actuator can be reliably attached to the organic EL panel, and the sound vibration characteristics of the organic EL panel speaker can be improved.

(First embodiment)
Hereinafter, an organic EL panel speaker 1 according to a first embodiment of the present invention will be described with reference to FIGS. In the following description, the direction in which the organic EL panel speaker 1 emits sound will be described as the front side (front) of the organic EL panel speaker 1 and the opposite side as the back side (rear).

  FIG. 1A is an overall perspective view showing a configuration of an appearance when the organic EL panel speaker 1 is attached to a stand 2, and FIG. 1B is a side view thereof. FIG. 2A is a perspective view of the organic EL panel speaker 1 as viewed from the back side. FIG. 2B shows that the organic EL panel speaker 1 shown in FIG. 2A is configured by assembling the organic EL panel 3 constituting the organic EL panel speaker 1 and the piezoelectric vibrating body 4 as a vibration actuator. It is a disassembled perspective view. FIGS. 3A, 3 </ b> B, 3 </ b> C, and 3 </ b> D are diagrams illustrating the configuration of the organic EL panel 3. FIG. 3A is a perspective view when the organic EL panel 3 is viewed from the back side, and FIG. 3B is a back view of the organic EL panel 3. 3C is a cross-sectional view taken along a cutting line AA shown in FIG. 3B, and FIG. 3D is an enlarged view of a portion indicated by P1 in FIG. 3C.

  As shown in FIGS. 1A and 1B and FIGS. 2A and 2B, the organic EL panel speaker 1 includes an organic EL panel 3 and a protector 5 that protects the periphery of the organic EL panel 3. The piezoelectric vibrating body 4, the conductor 6 for transmitting the vibration generated by the piezoelectric vibrating body 4 to the organic EL panel 3 and attaching the piezoelectric vibrating body 4 to the organic EL panel 3, and the piezoelectric vibrating body 4 as the conductor 6. And an attachment bracket 7 for attaching the organic EL panel speaker 1 to the stand 2. As shown in FIG. 1B, the organic EL panel speaker 1 is attached to the stand 2 via a mounting bracket 7 fixed to the piezoelectric vibrating body 4, and is used in a state where it is installed on a desk, for example. The

  The configuration of the organic EL panel 3 will be described with reference to FIGS. 3A, 3B, 3C, and 3D and FIGS.

  As shown in FIGS. 3C and 3D, the organic EL panel 3 is formed on a transparent glass substrate 8 in order from the glass substrate 8 side, a transparent electrode layer 9 (anode), an organic light emitting layer 10, and a reflection. An organic EL panel main body 12 on which a metal electrode layer 11 (cathode) serving also as a layer is laminated, and a moisture absorbing sheet 13 and a sealing plate 14 disposed on the organic EL panel main body 12 are provided. As shown in FIG. 4, the organic EL panel 3 includes a transparent electrode layer 9 and an organic light emitting layer in order from the glass substrate 8 side at each of four positions that divide the square glass substrate 8 into two equal parts. 10 and the metal electrode layer 11 are sequentially laminated, and a laminated portion 15 including the transparent electrode layer 9, the organic light emitting layer 10, and the metal electrode layer 11 is formed at each of the four positions. The glass substrate 8 has, for example, a thickness D11 of 0.7 mm and a vertical length T11 and a horizontal length S11 of 300 mm each, and the four laminated portions 15 are formed with, for example, a vertical length T12 and a horizontal length S12 of 122 mm each.

  The transparent electrode layer 9 is made of, for example, indium tin oxide or indium zinc oxide with a thickness of about 130 nm. In this embodiment, indium tin oxide is used. The organic light emitting layer 10 is composed of a low molecular compound, specifically, bis [N- (1-naphthyl) -N-phenyl] benzidine having a thickness of about 60 nm as a hole transport layer from the transparent electrode layer 9 side of the anode, and an electron transport layer and light emission It is formed of a film-forming layer in which a layer made of tris (quinolinolato) aluminum complex having a thickness of about 70 nm and a layer made of lithium fluoride having a thickness of about 1 nm are stacked as an electron injection layer. The metal electrode layer 11 is made of aluminum with a thickness of about 120 nm. Each of these layers is formed by, for example, a thin film mounting method using a vacuum deposition method.

  After forming the laminated portions 15 at the four locations on the glass substrate 8 as described above, as shown in FIG. 5, the glass substrate 8 is divided for each laminated portion 15 so that the vertical length T13 and the horizontal length S13 are 137.5 mm each. The square organic EL panel main body 12 is prepared. As shown in FIGS. 4 and 5, etc., an input terminal portion 16 is formed on one side of the transparent electrode layer 9 and an input terminal portion 17 is formed on one side of the metal electrode layer 11 so as to project each layer. At this time, the input terminal portion 16 and the input terminal portion 17 protrude from the edge portion of the laminated portion 15. In addition, illustration is abbreviate | omitted about the lead wire connected to the input terminal part 16 and the input terminal part 17, and supplying electric power to the transparent electrode layer 9 and the metal electrode layer 11. FIG.

  The sealing plate 14 is made of, for example, a glass material. As shown in FIG. 6 (A), a large square recess (spot portion) 18 is formed on one surface, and two moisture absorbing sheets 13 are formed in the recess 18. Are housed side by side. For example, the sealing plate 14 has a thickness D12 of 1 mm and a longitudinal length T14 and a lateral length S14 of 127.6 mm, respectively, and the recess 18 has a depth D13 of 0.3 mm and a longitudinal length T15 and a lateral length S15 of 122.6 mm each. Is formed. Further, the moisture absorbing sheet 13 is formed, for example, with a thickness D14 of 0.3 mm, a longitudinal length T16 of 40 mm, and a lateral length S16 of 30 mm. A difference between the vertical and horizontal width (127.6 mm) of the sealing plate 14 and the vertical and horizontal width (122.6 mm) of the recess 18 is formed as a peripheral edge 19 having a width W11 around the recess 18. The width W11 is 2.5 mm ((127.6 mm-122.6 mm) / 2).

  An adhesive sheet is previously attached to one surface of the moisture absorbing sheet 13. Therefore, when the moisture absorbing sheet 13 is accommodated in the recess 18 with the surface on which the adhesive sheet is attached facing the sealing plate 14, the moisture absorbing sheet 13 is sealed as shown in FIG. The plate 14 is housed in a fixed state in the recess 18. Then, the sealing plate 14 in which the hygroscopic sheet 13 is accommodated is directed so that the side on which the hygroscopic sheet 13 is accommodated faces the metal electrode layer 11 as shown in FIG. It arrange | positions on the organic electroluminescent panel main body 12 so that it may be located in the side.

  While the laminated portion 15 has a vertical length T12 and a horizontal length S12 of 122 mm each, the vertical length T15 and the horizontal length S15 of the recess 18 of the sealing plate 14 each have a length of 122.6 mm. For this reason, the edge of the recess 18 of the sealing plate 14 (the boundary between the peripheral edge 19 and the recess 18) is positioned at a position spaced apart by about 0.3 mm outside the periphery of the stacked portion 15. The depth D13 of the recess 18 is 0.3 mm, and the hygroscopic sheet 13 having a thickness D14 of 0.3 mm is accommodated in the recess 18, so that the sealing plate 14 is placed on the organic EL panel body 12. When disposed, the moisture absorbing sheet 13 is in contact with the metal electrode layer 11 of the laminated portion 15, and the peripheral portion 19 is made of glass by the thickness of the laminated portion 15 (thickness from the transparent electrode layer 9 to the metal electrode layer 11). The state can be separated from the substrate 8.

  However, the thickness of the laminated portion 15 is at most about 400 nm, and the moisture absorbing sheet 13 has some elasticity. Therefore, when the sealing plate 14 is disposed on the organic EL panel main body 12 so that the entire surface of the laminated portion 15 is located below the concave portion 18, the moisture absorbing sheet 13 is loosely deformed and the peripheral portion 19 is formed on the glass substrate 8. It comes into contact. Therefore, the laminated portion 15 is sealed between the glass substrate 8 and the sealing plate 14 by fixing and sealing the contact portion between the peripheral edge portion 19 and the glass substrate 8 with an adhesive.

  Adhesion of the contact portion between the peripheral edge portion 19 and the glass substrate 8 with an adhesive is performed as follows. First, before disposing the sealing plate 14 on the organic EL panel body 12, a UV curable epoxy resin adhesive is applied to the peripheral edge portion 19 in advance. Then, the peripheral edge portion 19 of the sealing plate 14 coated with the adhesive is brought into contact with the glass substrate 8 and the sealing plate 14 is disposed at a predetermined position of the organic EL panel main body 12. Subsequently, while the sealing plate 14 is pressed against the glass substrate 8, the adhesive application portion is irradiated with ultraviolet rays to cure the adhesive, and the contact portion between the peripheral edge portion 19 and the glass substrate 8 is fixed. In this manner, the sealing plate 14 is fixed to the organic EL panel body 12 by curing the adhesive, and the laminated portion 15 is sealed between the glass substrate 8 and the sealing plate 14.

  In the organic EL panel 3 configured as described above, the light emitted from the organic light emitting layer 10 is emitted to the glass substrate 8 side through the transparent electrode layer 9 and reflected by the metal electrode layer 11 to the glass substrate 8 side. Exits from. That is, the organic EL panel 3 is configured as a so-called bottom emission type organic EL panel.

  As shown in FIG. 2A, a piezoelectric vibrating body 4 is attached to the organic EL panel 3 via a conductor 6 on the outer surface (back surface) of the sealing plate 14. The conductor 6 is fixed and fixed to the center of gravity of the organic EL panel 3 having a square shape, that is, the center position of the diagonal line of the organic EL panel 3 with an adhesive. The conductor 6 has a flat, substantially conical shape whose surface fixed to the sealing plate 14 is a bottom surface, that is, a dome shape, and a cylindrical portion 21 is formed on the top. The front end surface 22 of the cylindrical portion 21 is formed into a flat surface, and a screw hole 23 is formed at the center of the front end surface 22. The conductor 6 is made of an aluminum material that is lightweight and has excellent vibration transmission properties. The bottom surface portion has a diameter L11 of, for example, 12 mm, and the cylindrical portion 21 has a diameter L12 of 6 mm.

  On the other hand, the piezoelectric vibrating body 4 is configured as a so-called bimorph type piezo element that is configured by attaching piezo elements 25 to both front and back surfaces around a metal substrate 24 generally called a shim having a thickness of about 0.2 mm. ing. In the present embodiment, the metal substrate 24 has a disc shape, and an annular piezo element 25 is attached to both surfaces around the metal substrate 24 so as to sandwich the metal substrate 24. The piezoelectric vibrating body 4 has a disk shape as a whole, and has a diameter L13 of 50 mm, for example. Note that a lead wire for supplying power to the piezoelectric vibrating body 4 is not shown.

  A metal seat plate portion 26 is provided in the central portion of the piezoelectric vibrating body 4. The seat plate portion 26 is disposed on both the front and back surfaces of the metal substrate 24, and a through hole 27 is formed in the center thereof. The through holes 27 are formed through the seat plate portions 26 and the metal substrate 24 disposed on both surfaces of the metal substrate 24.

  A threaded portion 29 that can be screw-coupled to the threaded hole 23 is formed on the end face 28 on one end side of the mounting bracket 7. Moreover, the peripheral part in which the thread part 29 of the end surface 28 is provided is formed in the plane. Therefore, the seat plate portion 26 of the piezoelectric vibrating body 4 is sandwiched between the tip surface 22 of the cylindrical portion 21 and the end surface 28 of the mounting bracket 7, and the screw portion 29 of the mounting bracket 7 is passed through the through hole 27 of the seat plate portion 26. The piezoelectric vibrating body 4 is fixed to the conductor 6 by screwing the screw portion 29 into the screw hole 23 and tightening. Then, the protector 5 shown in FIG. 2C is mounted around the organic EL panel 3, and the organic EL panel 3 and the piezoelectric vibrating body 4 are integrated with each other through the conductor 6 as shown in FIG. The configured organic EL panel speaker 1 is configured. The protector 5 is formed of a rubber material and has elasticity. The protector 5 is attached to the organic EL panel 3 by fitting the periphery of the organic EL panel 3 in a dovetail groove 30 formed on the inner peripheral side. As shown in FIG. 1, the organic EL panel speaker 1 configured as described above has the mounting bracket 7 attached to the tip of the stand 2 with a screw 31. And the organic EL panel speaker 1 can be installed and used on a desk etc., for example, in the state attached to the stand 2, as shown in FIG.1 (B).

  In the organic EL panel speaker 1 configured as described above, when an audio signal is applied to the piezoelectric vibrating body 4 and the piezoelectric vibrating body 4 is driven, the vibration of the piezoelectric vibrating body 4 is sealed via the conductor 6. The sealing plate 14 is transmitted to the stop plate 14 and vibrates. Since the sealing plate 14 is fixed to and integrated with the organic EL panel body 12, the entire organic EL panel speaker 1 vibrates when the sealing plate 14 vibrates, and from the surface of the glass substrate 8 serving as a light emission surface. Sounds like a sound. Thus, the piezoelectric vibrating body 4 is securely attached to the organic EL panel 3 by being attached to the sealing plate 14 constituting the organic EL panel 3. Further, by attaching the piezoelectric vibrating body 4 to the sealing plate 14 that occupies a large area among the members constituting the organic EL panel 3, the sound vibration characteristics can be improved.

  As described above, the organic EL panel speaker 1 has the sealing plate 14, which is a glass plate having a thickness D12 of 1 mm, fixed to the organic EL panel main body 12. Further, around the organic EL panel main body 12 and the sealing plate 14. Is equipped with a protector 5. Therefore, the organic EL panel speaker 1 is secured with high rigidity by the sealing plate 14 and the protector 5 and can obtain a suitable sound generation characteristic. When the organic EL panel speaker 1 is supported by the stand 2, the weight of the organic EL panel main body 12 and the protector 5 is applied to the portion of the sealing plate 14 where the conductor 6 is fixed. By making the stop plate 14 highly rigid, the deformation amount of the sealing plate 14 and the organic EL panel main body 12 can be suppressed to be small, and suitable sound generation characteristics can be obtained. In this Embodiment, the rigidity of the sealing plate 14 is made high by making thickness D12 of the glass plate which forms the sealing plate 14 into 1 mm.

  As described above, the peripheral portion 19 of the sealing plate 14 and the glass substrate 8 are fixed by the adhesive, so that the laminated portion 15 is sealed between the glass substrate 8 and the sealing plate 14. Yes. Therefore, even if the humidity of the environment where the organic EL panel speaker 1 is installed changes, the humidity of the laminated portion 15 is suppressed and kept stable. Further, since the moisture absorbing sheet 13 as a moisture absorbing material is provided between the laminated portion 15 and the sealing plate 14, it is possible to absorb the moisture in the space 32 between the glass substrate 8 and the sealing plate 14, It is possible to further suppress a change in the humidity of the stacked portion 15. In particular, for example, when the organic EL panel speaker 1 is moved from a cold outdoor to a warm room, the temperature around the organic EL panel speaker 1 rapidly increases, and the gap between the glass substrate 8 and the sealing plate 14 is increased. Even if water vapor in the trapped air is condensed, condensation is absorbed by the moisture absorbing sheet 13, so that condensation on the laminated portion 15 can be prevented.

  Moreover, the hygroscopic sheet 13 disposed in the space 32 between the laminated portion 15 and the sealing plate 14 functions as a damping member, and a suitable damping effect can be obtained. The pressure-sensitive adhesive sheet for sticking the hygroscopic sheet 13 to the sealing plate 14 also functions as a damping member, and a more suitable damping effect is obtained by sticking the hygroscopic sheet 13 to the sealing plate 14 with the pressure-sensitive adhesive sheet. Can do. Note that a hygroscopic agent having a damping function may be filled in the space 32 as a hygroscopic material instead of the hygroscopic sheet 13.

  Of the assembling work of the organic EL panel speaker 1 in the present embodiment, the work for fixing the peripheral edge portion 19 of the sealing plate 14 to the glass substrate 8 is performed in an atmosphere of nitrogen gas as an inert gas. I am going to do that. Therefore, the space 32 between the glass substrate 8 and the sealing plate 14 is filled with nitrogen gas, and is set to an acoustic characteristic different from that when air is sealed. By appropriately selecting the gas sealed in the space 32, acoustic characteristics corresponding to the type of gas can be obtained.

  In addition, when the recess 18 is formed in the sealing plate 14 and the space 32 is formed between the glass substrate 8 and the sealing plate 14, the space 32 is generated when the organic EL panel 3 and the sealing plate 14 vibrate. The internal loss can be obtained positively.

  The space 32 may be filled with an inert and electrically insulative liquid such as a fluorine inert liquid (trade name of 3M company: Florinate). Further, the space 32 may be filled with a gel-like substance which is a polymer material having a low glass point transfer such as polyethylene oxide and having a high viscosity at room temperature. As described above, by filling the space 32 with a liquid or a gel-like substance, an acoustic characteristic corresponding to the characteristic of the filler can be obtained.

  Note that the sealing plate 14 may be attached to the organic EL panel main body 12 so that the bottom surface of the recess 18 of the sealing plate 14 is brought into direct contact with the laminated portion 15 without providing the moisture absorbing sheet 13. In this case, the space 32 is not formed, and the sealing plate 14 comes into contact with the stacked portion 15.

  FIG. 8 shows a graph of reproduction frequency characteristics of the organic EL panel speaker 1 configured as described above. The graph line G1 shows the reproduction frequency characteristic of the organic EL panel speaker 1. A graph line G2 indicates a reproduction frequency characteristic when the piezoelectric vibrating body 4 is driven by attaching the piezoelectric vibrating body 4 to the glass plate alone via the same conductor 6 as the organic EL panel speaker 1.

  As can be seen by comparing the graph line G1 and the graph line G2, the organic EL panel speaker 1 is heavier than the glass plate alone, so the sound pressure level is low, but the bass band, particularly from about 300 Hz. The characteristics at 1 kHz are less preferable from the viewpoint of audio, with less occurrence of peaks and less dip than the glass plate alone. In addition, the organic EL panel speaker 1 is clearly less likely to generate peaks or dick in the mid-high frequency range, particularly 2 kHz to 3 kHz, which is sensitive to hearing, compared to a single glass plate, and from an audio perspective. This is a favorable characteristic.

  In the organic EL panel speaker 1 according to the present embodiment, an example in which a glass plate is used as the sealing plate 14 has been described. However, in view of required acoustic characteristics, rigidity required for the sealing plate 14, and the like, aluminum is used. Alternatively, a metal plate such as copper or a resin plate such as polyester may be used as the sealing plate 14. By using a metal plate or a resin plate as the sealing plate 14, the sealing plate 14 can have high rigidity.

(Second Embodiment)
Next, an organic EL panel speaker 40 according to a second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected about the member similar to the organic electroluminescent panel speaker 1 which concerns on the above-mentioned 1st Embodiment, and the description is abbreviate | omitted.

  FIG. 9A is a perspective view of the organic EL panel speaker 40 as viewed from the back side. FIG. 9B is an exploded perspective view of the organic EL panel speaker 40. 10A is a rear view of the organic EL panel speaker 40, FIG. 10B is a cross-sectional view taken along the line AA shown in FIG. 10A, and FIG. 11 is FIG. 10B. It is an enlarged view of the part shown by P2.

  The organic EL panel speaker 40 is configured to vibrate the organic EL panel 3 described in the first embodiment by a voice coil type vibration device 41 as a vibration actuator. As shown in FIG. 9B, the organic EL panel speaker 40 includes a front frame 42, two cushion materials 43, an organic EL panel 3, a voice coil 48 that constitutes a voice coil type vibration device 41, and a magnetic field. A circuit structure 49 and a rear frame 44 are provided.

  The front frame 42 is configured as a rectangular frame 45 that can hold the organic EL panel 3 inside, and a portion corresponding to the display surface of the organic EL panel 3 is formed as an opening 46. An extending portion 47 is formed on the inner periphery of the frame 45 so as to extend inward over the entire periphery of the opening 46. The frame body 45 is made of, for example, an aluminum material. The frame body 45 has a longitudinal length T21 and a lateral length S21 of 157.5 mm each, a thickness D21 in the front-rear direction of 8 mm, and a longitudinal length T22 of the inner circumference. And the horizontal length S22 is 138.0 mm each. That is, the square organic EL panel 3 of 137.5 mm in length and width (see FIG. 5) can be accommodated inside the frame 45. The vertical length T23 and the horizontal length S23 of the opening 46 are each 120 mm, the width W21 of the frame 45 is 9.75 mm, and the width W22 of the extending portion 47 is 9 mm.

  The cushion material 43 is, for example, a thin sheet formed from an independently foamed urethane material, and has a size that can be disposed so as to overlap the entire circumference of the extending portion 47 inside the frame body 45 of the front frame 42. Presents a rectangular frame. The width W23 of the cushion material 43 is slightly narrower than the width W22 of the extended portion 47 so that it does not protrude from the extended portion 47 when the cushion material 43 is disposed on the extended portion 47, for example, 8 mm. ing.

  The voice coil type vibration device 41 includes a voice coil 48 and a magnetic circuit component 49. The voice coil 48 has a cylindrical bobbin portion 50 and a flange portion 51 formed on one end side of the bobbin portion 50, and a coil portion 52 is formed by winding a conducting wire around the bobbin portion 50. The coil portion 52 is firmly wound around the bobbin portion 50 so as not to move back and forth. Moreover, you may make it fix the coil part 52 with respect to the bobbin part 50 by adhering the bobbin part 50 and the coil part 52 with an adhesive agent as needed.

  As shown in FIGS. 9B, 10 </ b> B, and 11, the magnetic circuit configuration body 49 includes a plate 53, a magnet 54, and a yoke 55. The plate 53 has a disk shape and is made of an iron material that is a magnetic material. The magnet 54 has a ring shape and is made of a neodymium material. The yoke 55 has a cylindrical portion 56 and a disk portion 57, and has a shape called a so-called saddle yoke. The disk portion 57 has a larger diameter than the cylindrical portion 56, and the yoke 55 is formed with a flange portion 68 where the disk portion 57 protrudes from the outer periphery of the cylindrical portion 56.

  The diameter of the outer periphery of the magnet 54 is smaller than the inner periphery of the cylindrical portion 56 of the yoke 55. The magnet 54 is disposed between the outer circumferential surface of the magnet 54 and the inner circumferential surface of the cylindrical portion 56 of the yoke 55 so that a uniform gap 58 is opened over the entire circumference of the outer circumferential surface.

  The diameter of the outer periphery of the plate 53 is also smaller than the inner periphery of the cylindrical portion 56 of the yoke 55. The plate 53 is arranged between the inner peripheral surface of the cylindrical portion 56 of the yoke 55 and the outer peripheral surface of the plate 53 so that a uniform gap 59 is opened as a magnetic gap over the entire outer periphery of the plate 53. And fixed to the magnet.

  The magnetic circuit component 49 and the voice coil 48 are configured such that the coil portion 52 and the bobbin portion 50 can be inserted into the gap 59 as a magnetic gap without contacting the plate 53 and the cylindrical portion 56. For example, in the organic EL panel speaker 40 according to the present embodiment, the inner diameter L21 of the cylindrical portion 56 of the yoke 55 is 25.54 mm, and the diameter L22 of the plate 53 is 24.2 mm. The width is 0.67 mm. The inner diameter L23 of the bobbin portion 50 of the voice coil 48 is 24.4 mm, and the outer diameter L24 including the coil portion 52 of the bobbin portion 50 is 25.34 mm.

  By doing so, the plate 53 can be inserted on the inner peripheral side of the bobbin portion 50 with an interval of 0.1 mm with respect to the inner peripheral surface of the bobbin portion 50, and the coil portion 52 and The bobbin portion 50 can be inserted with a space of 0.1 mm with respect to the inner peripheral surface of the cylindrical portion 56. The diameter L25 of the outer periphery of the cylindrical portion 56 of the yoke 55 is 29.98 mm, and the inner depth D22 from the opening end of the cylindrical portion 56 to the disk portion 57 is 5.5 mm. The magnet 54 has a thickness D23 of 3 mm, an outer diameter L26 of 23 mm, and an inner diameter L27 of 10 mm. The plate 53 has a thickness D24 of 2 mm. The winding width D25 of the coil portion 52 of the voice coil 48 is 3 mm, and the impedance is set to 4Ω.

  The rear frame 44 includes a rectangular outer frame portion 60 and a cross-shaped inner frame portion 61 that is provided inside the outer frame portion 60 and connects opposite side portions of the outer frame portion 60. In addition, a rib portion 62 (see FIG. 10B) formed in a frame shape along the outer frame portion 60 is formed on the front side of the outer frame portion 60. The vertical length T24 and the horizontal length S24 of the outer periphery of the outer frame portion 60 are each 157.5 mm, the vertical length T25 and the horizontal length S25 of the outer periphery of the rib portion 62 are each 137.0 mm, and the inner peripheral side step portion of the rib portion 62 is The thickness D26 in the front-rear direction is 8 mm. Both the outer frame portion 60 and the inner frame portion 61 are formed with a wide surface, and a circular opening 63 into which the cylindrical portion 56 of the yoke 55 of the magnetic circuit component 49 is inserted is formed at the center of the inner frame portion 61. Yes. For example, the width W24 of the inner frame portion 61 is 25 mm excluding the portion where the opening 63 is formed. The portion of the inner frame 61 where the opening 63 is formed is formed wider than 25 mm so that the diameter L28 of the opening 63 can be inserted into the cylindrical portion 2 of the yoke 55. The diameter L28 of the part 63 is 30 mm.

  Since the inner frame portion 61 has a cross shape, four rectangular openings 64 are formed between the inner side of the outer frame portion 60 and the inner frame portion 61. The openings 64 are arranged in the four corner directions of the outer frame part 60 and are arranged at positions that are centrally symmetric with respect to the openings 63.

  The rear frame 44 having the above-described configuration is manufactured by, for example, hollowing out a rectangular plate body from the portions corresponding to the opening 63 and the opening 64, and the outer frame portion 60 and the inner frame portion 61. And are configured integrally. Since the inner frame portion 61 is formed with respect to the outer frame portion 60 in this manner, the rear frame 44 has increased rigidity against deformation.

  As shown in FIG. 9B, first, the organic EL panel speaker 40 is arranged such that one cushion material 43 is overlaid on the extending portion 47 inside the front frame 42. Next, the organic EL panel 3 is accommodated inside the frame body 45. Since the extending portion 47 is formed inside the frame body 45, the organic EL panel 3 is accommodated inside the frame body 45 with the periphery of the glass substrate 8 being supported by the extending portion 47. It will be. Subsequently, the other cushion material 43 is placed on the periphery of the organic EL panel 3 accommodated inside the frame body 45. Then, the voice coil 48 is placed on the organic EL panel 3, and the rear frame 44 is placed on the front frame 42 so that the rib portion 62 is fitted inside the frame body 45 of the front frame 42. Place.

  The voice coil 48 and the rear frame 44 are configured such that the voice coil 48 is placed on the organic EL panel 3 with the coil portion 52 being passed through the opening 63 from the front side of the rear frame 44. The rear frame 44 is placed on the front frame 42. By fitting the rib portion 62 inside the frame body 45, the organic EL panel 3 is sandwiched between the extending portion 47 of the frame body 45 and the rib portion 62 via the cushion material 43, The organic EL panel 3 is held by the front frame 42 and the rear frame 44. Then, screws 66 are respectively passed through a plurality of through holes 65 formed in the outer frame portion 60 of the rear frame 44, and the screws 66 are screwed to screw holes 67 formed on the back surface of the frame body 45 of the front frame 42. Thus, the rear frame 44 is fixed to the front frame 42. After the rear frame 44 is fixed to the front frame 42, the distance between the peripheral side surface of the coil portion 52 and the inner side surface of the opening 63 is made uniform over the entire periphery of the coil portion 52 using a jig. In addition, the voice coil 48 is positioned, and in this positioned state, the flange portion 51 of the voice coil 48 is bonded and fixed to the sealing plate 14 of the organic EL panel 3.

  Subsequently, the magnetic circuit component 49 is attached to the rear frame 44 such that the cylindrical portion 56 of the yoke 55 is inserted into the opening 63. Since the diameter L21 of the inner peripheral surface of the cylindrical portion 56, the diameter L22 of the plate 53, the inner diameter L23 of the bobbin portion 50, and the diameter L24 of the portion including the coil portion 52 are configured as described above, When the cylindrical portion 56 is inserted into the opening 63, the bobbin portion 50 and the coil portion 52 are inserted into a gap 59 that is a magnetic gap between the cylindrical portion 56 and the plate 53. When the cylindrical portion 56 of the yoke 55 is inserted into the opening 63, the magnetic circuit component 49 is positioned in the front-rear direction by the flange portion 68 coming into contact with the rear frame 44. The magnetic circuit component 49 is fixed to the rear frame 44 by fixing the flange portion 68 to the rear frame 44 with an adhesive, and the organic EL panel speaker 40 shown in FIG. 9A is configured. The

  In the organic EL panel speaker 40 configured as described above, when an audio signal is input from a lead wire (not shown) connected to the coil unit 52, the voice coil type vibration device 41 is driven. That is, the voice coil 48 vibrates with respect to the magnetic circuit component 49. When the voice coil 48 vibrates, this vibration is transmitted to the sealing plate 14, and as a result, the entire organic EL panel speaker 40 vibrates and sounds like sound is emitted from the surface of the glass substrate 8 that is the light emission surface.

  FIG. 12 shows a graph of reproduction frequency characteristics of the organic EL panel speaker 40 configured as described above. The graph line G3 shows the reproduction frequency characteristic of the organic EL panel speaker 40. A graph line G1 indicates the organic EL panel speaker 1. The organic EL panel speaker 40 has a smooth rise from about 100 Hz as compared with the organic EL panel speaker 1, and the organic EL panel speaker 40 is preferable in terms of hearing. Moreover, although a peak and a dip occurred in the vicinity of 1 kHz, there was no sense of incongruity in terms of hearing.

  As described above, the periphery of the organic EL panel 3 of the organic EL panel speaker 40 is held by the outer frame portion 60 of the front frame 42 and the rear frame 44. Since the organic EL panel 3 is easily deformed in the surroundings, the deformation of the organic EL panel 3 is effectively suppressed by being held by the front frame 42 and the outer frame portion 60 of the rear frame 44 in this way. Can do. In addition, since the rear frame 44 has increased rigidity by providing the cross-shaped inner frame portion 61, the deformation of the organic EL panel 3 can be further suppressed.

  The organic EL panel 3 is held between the front frame 42 and the rear frame 44 via the cushion material 43. Therefore, the pressing force of the organic EL panel 3 acting between the front frame 42 and the rear frame 44 is reduced by the cushion material 43 by fixing the front frame 42 and the rear frame 44 with the screws 66. The deformation of the organic EL panel 3 can be prevented. Further, by providing the cushion material 43, it is possible to make the reproduction frequency in the low frequency band suitable for hearing.

  In the organic EL panel speaker 40, since the heavy magnetic circuit component 49 of the voice coil type vibration device 41 is held by the rear frame 44, the sealing plate 14 can be thinned and the sound generation efficiency is increased. can do.

(Third embodiment)
By the way, looking at the reproduction frequency characteristic of the organic EL panel speaker 1 and the reproduction frequency characteristic of the organic EL panel speaker 40 shown in FIG. It can be seen that at 1 kHz or higher, the reproduction frequency characteristics by the piezoelectric vibrating body 4 are suitable for hearing. Therefore, in the organic EL panel speaker 70 according to the third embodiment described below, as shown in FIGS. 13 (A), (B) and FIG. The piezoelectric vibrator 71 is mounted. In addition, the same code | symbol is attached | subjected about the member similar to the organic electroluminescent panel speaker 1 and 40 which concerns on the above-mentioned 1st and 2nd embodiment, and the description is abbreviate | omitted.

  13A is a perspective view of the organic EL panel speaker 70 viewed from the back side, and FIG. 13B is an exploded perspective view when the piezoelectric vibrating body 71 is attached to the organic EL panel speaker 40. FIG. . FIG. 14 is a cross-sectional view of the organic EL panel speaker 70 taken along the section line AA shown in FIG.

  The voice coil type vibration device 41 is generally suitable for medium / low frequency band reproduction, and the piezoelectric vibrator 71 is generally suitable for medium / high temperature band reproduction. Therefore, as shown in FIGS. 13A, 13B, and 14, the voice coil type vibration device 41 is attached to the central portion where the amplitude is most easily obtained in the organic EL panel 3, so that the mid-low frequency band reproduction characteristics are obtained. Can be made suitable. Then, by attaching a piezoelectric vibrating body 71 having the configuration described below at a position sandwiching the voice coil type vibration device 41, the reproduction frequency characteristic of the organic EL panel speaker 70 is shown in FIG. In particular, the sound pressure can be high in a sound range of 5 kHz or higher.

  16A, 16B, 16C, 16D, and 16E illustrate the configuration of a piezoelectric vibrating body 71 and a fixture 72 for mounting the piezoelectric vibrating body 71 to the organic EL panel 3. FIG. It is a figure to do. FIGS. 16A, 16 </ b> B, and 16 </ b> C are a perspective view, a rear view, and a side view of the fixture 72 and the piezoelectric vibrator 71 viewed from the back side when the piezoelectric vibrator 71 is attached to the fixture 72, respectively. FIG. FIG. 16D is an exploded perspective view when the piezoelectric vibrating body 71 is attached to the mounting tool 72 and the piezoelectric vibrating body 71 and the mounting tool 72 are integrated. FIG. 16E is a cross-sectional view taken along line AA shown in FIG.

  The piezoelectric vibrator 71 has a so-called bimorph type having a metal substrate 73 (shim) made of stainless steel and two piezo elements 74 arranged with the metal substrate 73 interposed therebetween as shown in FIG. It is configured as a piezo element. The metal substrate 73 is, for example, a rectangular thin plate having a longitudinal length of 31 mm, a lateral length of 13.5 mm, and a thickness D31 of 0.2 mm. The piezo element 74 has a longitudinal length of 28 mm, a lateral length of 13 mm, and a thickness D32. A rectangular thin plate of 0.15 mm is presented. The piezoelectric vibrating body 71 is attached to the back surface of the organic EL panel 3 via the attachment 72.

  The fixture 72 includes a receiving member 75 and a pressing member 76. The receiving member 75 has a prismatic shape as a whole, and includes a triangular prism portion 78 in which the edge portion 77 is formed and a quadrangular prism portion 79 provided at both ends thereof. For example, the triangular prism portion 78 and the rectangular prism portion are made of an acrylic resin material. 79 is integrally formed. The pressing member 76 also has a prismatic shape as a whole, and includes a triangular prism portion 81 in which the edge portion 80 is formed and a rectangular prism portion 82 provided at both ends thereof. The rectangular column part 82 is integrally formed.

  The surface on the side where the edge portion 77 of the receiving member 75 is formed and the surface on the side where the edge portion 80 of the pressing member 76 is formed have the same shape. That is, when the receiving member 75 and the pressing member 76 are brought into contact with each other in the direction in which the edge portion 77 and the edge portion 80 face each other, the contact surfaces of the receiving member 75 and the pressing member 76 are brought into contact with each other over the entire surface. Will be in touch. A screw hole 83 is formed on the surface of the receiving member 75 facing the pressing member 76 of the rectangular column portion 79, and a through hole 84 is formed in the rectangular column portion 82 of the pressing member 76.

  Further, the lengths of the edge portion 77 of the receiving member 75 and the edge portion 80 of the pressing member 76 are both slightly longer than the lateral width of the piezoelectric vibrating body 71. In the present embodiment, the receiving member 75 has, for example, a total length M31 of 24 mm, a width W31 of 4 mm, a height D33 (a thickness in the front-rear direction) of 4.6 mm, and the edge portion 77 has a length N31. Is 13.6 mm and the width W32 is 0.8 mm. In addition, the inclination angle (slipping angle) β1 of the slopes 85 on both sides of the edge portion 77 is 43.6 degrees. The presser member 76 has, for example, a total length M32 of 24 mm, a width W33 of 4 mm, and a height D34 (thickness in the front-rear direction) of 3 mm. .6 mm and a width of 0.8 mm. In addition, the inclination angle (slipping angle) β2 of the slopes 86 on both sides of the edge portion 80 is 65.2 degrees.

  As shown in FIG. 16D, a piezoelectric vibrating body 71 configured by sandwiching a metal substrate 73 between two piezoelectric elements 74 and 74 is sandwiched between an edge portion 77 and an edge portion 80. It is disposed between the receiving member 75 and the pressing member 76. Then, by passing the screw 87 through the through hole 84 and screwing it into the screw hole 83, the pressing member 76 is pressed against the receiving member 75, and the piezoelectric vibrating body 71 is received as shown in FIG. The piezoelectric vibrating body 71 and the fixture 72 are integrally formed by being sandwiched between the edge portion 77 of the member 75 and the edge portion 80 of the pressing member 76.

  The two fixtures 72 to which the piezoelectric vibrator 71 is attached as described above are placed on the organic EL panel 3 in the two openings 64 at the position sandwiching the voice coil type vibration device 41 of the rear frame 44. The bottom surface 87 of the receiving member 75 is fixed with an adhesive one by one. The fixing position of the receiving member 75 to the organic EL panel 3 is a position that is symmetric with respect to the voice coil type vibration device 41. Thus, by providing the piezoelectric vibrating body 71 in addition to the voice coil type vibration device 41, the reproduction frequency characteristic of the organic EL panel speaker 70 can be made to have a high sound pressure in the mid-high range.

  In the organic EL panel speaker 70 in the present embodiment, the piezoelectric vibrating body 71 is disposed in the two openings 64 sandwiching the voice coil type vibration device 41, but the organic in the other two openings 64 is organic. The piezoelectric vibrating body 71 may be attached to the EL panel 3, and the piezoelectric vibrating body 71 may be provided at four locations around the voice coil type vibrating device 41 so as to be symmetric with respect to the voice coil type vibrating device 41. Further, the position and number of the piezoelectric vibrator 71 attached to the organic EL panel 3 can be set as appropriate according to the required sound quality and the like.

  17A, 17B, 17C, and 17D are views showing a state where the corner portion of the organic EL panel speaker 70 is held by the Y-type holding portion 90 of the stand 89. 17 (A) is a perspective view seen from the front, FIG. 17 (B) is a front view, FIG. 17 (C) is a side view, and FIG. 17 (D) is a rear view.

  The organic EL panel speaker 70 described above may be provided with an acoustic cavity 91 on the back side as shown in FIG. By mounting the acoustic cavity 91, the sound pressure in the low to mid range is improved, and a preferable sound quality can be obtained. The acoustic cavity 91 is fixed to the front frame 42 by screws 66 together with the rear frame 44 as shown in FIG. In addition, also about the organic EL panel speakers 1 and 40 which concern on the above-mentioned embodiment, by mounting | wearing an acoustic cavity, the sound pressure of a low sound range can be improved and preferable sound quality can be obtained.

  FIGS. 19A, 19B, 19C, and 19D show a state in which the corner portion of the organic EL panel speaker 70 to which the acoustic cavity 91 is mounted is held by the Y-type holding portion 90 of the stand 89. 19A is a perspective view seen from the front, FIG. 19B is a front view, FIG. 19C is a side view, and FIG. 19D is a rear view.

  Further, the organic EL panel speaker 70 may have a flange portion 92 formed on the outer periphery of the front frame 42 as shown in FIGS. 20 (A), (B), (C), (D), and (E). . 20A, 20B, and 20C are a perspective view, a rear view, and a front view, respectively, of the organic EL panel speaker 70 in which the flange portion 92 is formed on the outer periphery of the front frame 42 as viewed from the back side. is there. 20D is a cross-sectional view taken along line AA in FIG. 20B, and FIG. 20E is an enlarged view of a portion indicated by P3 in FIG. 20D. By forming the flange portion 92 in this way, as shown in FIG. 21, the flange portion 92 is brought into contact with the periphery of the opening portion 94 of the wall 93 formed of a plywood plate or the like, and the organic EL panel speaker 70 is brought into contact with the opening portion 94. It is possible to wear it by embedding it. The organic EL panel speaker 70 is threaded through a through hole 95 formed in the flange portion 92 and is fixed to the wall 93 by the screw 96.

(Fourth embodiment)
Next, an organic EL panel speaker 100 according to a fourth embodiment of the present invention will be described with reference to FIGS. 22A, 22B, 22C, and 22D show the configuration of the organic EL panel 101 used in the organic EL panel speaker 100. FIG. 22A shows the organic EL panel 101. FIG. 22B is a rear view of the organic EL panel 101. FIG. 22C is a cross-sectional view taken along a cutting line AA shown in FIG. 22B, and FIG. 22D is an enlarged view of a portion indicated by P4 in FIG. 22C. FIG. 23A is a perspective view of the organic EL panel speaker 100 as viewed from the front side, and shows a state where the organic EL panel speaker 100 is attached to the stand 102. FIG. 23B is an exploded perspective view of the organic EL panel speaker 100. FIG. 24A is a front view of the organic EL panel speaker 100. 24B is a cross-sectional view taken along line AA shown in FIG. 24A, and FIG. 24B is an enlarged view of a portion indicated by P5 in FIG. In addition, the same code | symbol is attached | subjected about the member similar to the organic electroluminescent panel speaker 1,40,70 which concerns on the above-mentioned 1st to 3rd embodiment, and the description is abbreviate | omitted.

  In the organic EL panel 3 in each of the above-described embodiments, the laminated portion 15 of the organic EL panel body 12 is sealed with the sealing plate 14. On the other hand, the organic EL panel 101 used for the organic EL panel speaker 100 is a laminated portion of the organic EL panel main body 12 as shown in FIGS. 22 (C) and (D) and FIGS. 24 (A) and (B). 15 is covered up to the glass substrate 8 with a sealing film 103 formed of an inorganic compound film such as silicon oxide silicon (SiOxNy), so that the laminated portion 15 is sealed between the glass substrate 8 and the inorganic compound film. It becomes the structure which stops. As described above, by sealing the stacked portion 15, it is possible to suppress a change in humidity of the stacked portion 15. Moreover, the weather resistance and intensity | strength of the sealing film 103 can be improved by making the sealing film 103 into an inorganic compound. Note that the inorganic compound is formed by sputtering or CVD (Chemical Vapor Deposition).

  Since the sealing film 103 has a thin film thickness of about several microns, when the laminated portion 15 is sealed with the sealing film 103 instead of the sealing plate 14, the conductor is directly applied to the surface of the sealing film 103. 6, the voice coil 48, or the receiving member 75 may be fixed, the metal electrode layer 24 of the laminated portion 15 may be damaged. Therefore, as shown in FIGS. 23B, 24B, and 24C, a drive formed of a glass plate or the like on the back surface (the metal electrode layer 24 side) of the organic EL panel 101 with an adhesive layer 104 interposed therebetween. The plates 105 are bonded together, the voice coil type vibration device 41 and the piezoelectric vibrating body 71 are attached to the drive plate 105, and the organic EL panel 101 is sounded through the drive plate 105. The drive plate 105 to which the organic EL panel 101 is bonded is fixed to the front frame 42 with an adhesive, and an acoustic cavity 91 is mounted on the back surface of the organic EL panel speaker 100.

  By attaching the voice coil type vibration device 41 and the piezoelectric vibrating body 71 via the drive plate 105 in this way, it is possible to prevent the laminated portion 15 from being damaged. Further, the adhesive layer 104 between the drive plate 105 and the organic EL panel 101 exhibits a function of a buffer material and has a suitable damping effect.

  In addition, the adhesive that forms the adhesive layer 104 includes a metal oxide such as barium oxide or calcium oxide, or a substance that chemically reacts with moisture such as metal alkoxide and traps moisture as a hygroscopic material. The change in the humidity of 15 can be more effectively suppressed.

  The drive plate 105 may be a glass plate, a metal plate such as aluminum or copper, or a resin plate such as polyester in view of required acoustic characteristics, rigidity required for the drive plate 105, and the like. Good.

  The organic EL panel 101 forms the metal electrode layer 11, the organic light emitting layer 10, and the transparent electrode layer 9 in order from the glass substrate 8, and emits light emitted from the organic light emitting layer 10 without passing through the glass substrate 8. You may comprise as what is called a top emission type organic electroluminescent panel.

  FIGS. 25A, 25B, and 25C show a top emission type organic EL instead of the bottom emission type organic EL panel 101 used in the organic EL panel speaker 100 shown in FIGS. The structure of the organic EL panel speaker 107 when the panel 106 is mounted is shown. FIG. 25A is a front view when the organic EL panel speaker 107 is attached to the stand 102, and FIG. 25B is a cross-sectional view taken along a cutting line AA shown in FIG. FIG. 25C is an enlarged view of a portion indicated by P6 in FIG.

  When the top emission type organic EL panel 106 is used, as shown in FIGS. 25B and 25C, the organic EL panel 106 is bonded to the glass substrate 8 with the driving plate 105 through the adhesive layer 104. A voice coil type vibration device 41 and a piezoelectric vibrating body 71 are attached to the drive plate 105, and the organic EL panel 101 is caused to emit sound through the drive plate 105. When the top emission type organic EL panel 106 is used, the voice coil type vibration device 41 and the piezoelectric vibrating body 71 are directly attached to the glass substrate 8 without using the drive plate 105 to vibrate the glass substrate 8. The organic EL panel 106 may sound.

  Thus, the voice coil type vibration device 41 and the piezoelectric vibrating body 71 are attached to the organic EL panel 106 by attaching the voice coil type vibration device 41 and the piezoelectric vibration body 71 to the glass substrate 8 constituting the organic EL panel 106. It can be securely attached. Further, by attaching the voice coil type vibration device 41 and the piezoelectric vibrating body 71 to the glass substrate 8 that occupies a large area among the members constituting the organic EL panel 106, the sound vibration characteristics can be improved. When the top emission type organic EL panel 106 is used as the organic EL panel as described above, the organic EL panel 106 may be a metal plate instead of the glass substrate 8 made of glass. Thus, by making the glass substrate 8 a metal thin plate such as aluminum, copper alloy (brass), or iron (stainless steel), the required strength of the organic EL panel 106 is obtained and the glass substrate 8 is easily bent. That is, it becomes easy to vibrate in a wider band (particularly in a low frequency range), and the attachment of the voice coil type vibration device 41 and the piezoelectric vibrating body 71 to the organic EL panel 106 can be made more reliable. Further, the metal thin plate can be rolled relatively freely, and has an advantage that the thickness can be selected according to the purpose.

  The organic EL panel 3, the organic EL panel 101, or the organic EL panel 106 of the organic EL panel speakers 1, 40, 70, 100, 107 in each of the above-described embodiments includes the glass substrate 8, the sealing plate 14, or the driving plate 105. The thinner the sound, the better the acoustic pronunciation efficiency. However, in the organic EL panel speaker 1, the organic EL panel 3 is supported by the stand 2 via the piezoelectric vibrating body 4 as shown in FIG. Since the weight of 3 and the protector 5 is increased, if the sealing plate 14 is thinned, the sealing plate 14 is deformed or broken, and a desired acoustic characteristic cannot be obtained.

  In the organic EL panel speakers 40, 70, 100, and 107, the sealing plate is attached when the voice coil 48 or the piezoelectric vibrator 71 is attached to the organic EL panel 3, the organic EL panel 101, or the organic EL panel 106. 14 or the driving plate 105 is subjected to the weight of the voice coil 48 or the piezoelectric vibrator 71. Therefore, also in this case, if the sealing plate 14 and the driving plate 105 are thinned, the sealing plate 14 and the driving plate 105 are deformed or damaged, and desired acoustic characteristics cannot be obtained. Therefore, it is preferable that the sealing plate 14 and the driving plate 105 are made of a material that can obtain a predetermined strength and a thickness and strength in consideration of these points.

  In the above-described organic EL panel speakers 1, 40, 70, 100, 107, the organic EL panel speakers 1, 40, 70, 100, 107 are selected by selecting the thickness and material of the glass substrate 8, the sealing plate 14, or the driving plate 105. 107 reproduction frequency characteristics and standing wave generation can be controlled. For example, in the organic EL panel speakers 1, 40, 70, the thickness of the sealing plate 14 is 1/5 to 5 times the thickness of the glass substrate 8, preferably 1/5 to 2 times, Generation | occurrence | production of a standing wave can be effectively suppressed by making the glass substrate 8 into a different material from the sealing plate 14. FIG.

  In addition, as the vibration actuator, a super magnetostrictive element or the like can be used in addition to the piezoelectric vibration body 4 and the piezoelectric vibration body 71 using the piezoelectric element described above, or the voice coil type vibration device 41 using a voice coil. In the description of each embodiment described above, specific dimensions of each member are shown in order to help understanding of the configuration of the organic EL panel speakers 1, 40, 70, 100, and 107. However, the dimensions are not limited thereto. These dimensions are set as appropriate.

The above-mentioned organic EL panel speakers 1, 40, 70, 100, and 107 can be used not only as a display body that emits sound for displaying an image or the like, but also as an illuminating body. It can also be used as a guide light (indicator light). In other words, in the event of an emergency, it is possible to display an exit guidance and a necessary message on the display unit and to sound an announcement. In addition, the organic EL panel may have either a passive type or an active type.

  In the above-described organic EL panel speakers 1, 40, 70, 100, and 107, the voice coil type vibration device 41 or the piezoelectric vibrating body 71 is mounted on the organic EL panel 3, the organic EL panel 101, or the organic EL panel 106. The reproduction frequency characteristic is measured in advance. Then, based on the measured reproduction frequency characteristic, an input signal capable of obtaining a reproduction frequency characteristic having a desired resonance frequency band or a low level frequency band is obtained, applied, and sounded. In this way, by applying the input signal corresponding to the reproduction frequency characteristic, the sound generation can be made a practical sound.

  The organic EL panels 3, 101, and 106 described above may be so-called multi-photon organic EL panels in which the organic light-emitting layer 10 is configured using a multi-photon element. As an organic EL panel having a multi-photon structure, for example, an organic EL element having a light emitting layer composed of at least one organic compound sandwiched between an opposing anode electrode and a cathode electrode, or an anode electrode and a cathode that are also facing each other. Some include a tandem organic EL element having a plurality of light-emitting units including at least one light-emitting layer between electrodes.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the organic electroluminescent panel speaker which concerns on the 1st Embodiment of this invention, (A) is a whole perspective view which shows the external appearance structure when attached to a stand, (B) is the side view. . It is the figure which looked at the organic EL panel speaker shown in FIG. 1 from the back, (A) is a perspective view, (B) is an exploded perspective view of the organic EL panel speaker shown in (A), (C) is It is a perspective view of a protector attached to an organic EL panel speaker. It is a figure which shows the organic electroluminescent panel used for the organic electroluminescent panel speaker shown in FIG. 1, (A) is the perspective view seen from the back side, (B) is a rear view, (C) is (B (D) is an enlarged view of a P1 portion shown in (C). It is a figure which shows the structure of the laminated part of the organic electroluminescent panel main body shown in FIG. It is a figure which shows dividing | segmenting the glass substrate which comprised the laminated part shown in FIG. 4, and obtaining an organic EL panel main body. It is a figure which shows the sealing board which comprises the organic electroluminescent panel shown in FIG. 3, (A) is a figure which shows the structure of a sealing board, and accommodating the sheet | seat for moisture absorption in this sealing board, (B (A) is a figure which shows the state which accommodated the sheet | seat for moisture absorption in the sealing plate. It is a figure explaining a part of structure of the organic electroluminescent panel shown in FIG. 3, and is a figure which shows arrange | positioning the sealing board in which the sheet | seat for moisture absorption is accommodated on an organic electroluminescent panel main body. 2 is a graph showing a reproduction frequency characteristic of the organic EL panel speaker shown in FIG. 1 and a reproduction frequency characteristic when a glass substrate alone is driven by the same piezoelectric vibrator as that provided in the organic EL panel speaker. It is a figure which shows the organic electroluminescent panel speaker which concerns on the 2nd Embodiment of this invention, (A) is the perspective view seen from the back side, (B) is disassembly of the organic electroluminescent panel speaker shown to (A). It is a perspective view. It is a figure which shows the organic electroluminescent panel speaker shown in FIG. 9, (A) is the back view, (B) is sectional drawing in the cutting line AA shown to (A). It is an enlarged view of P2 part shown to FIG. 10 (B). It is a graph which shows the reproduction frequency characteristic of the organic electroluminescent panel speaker shown in FIG. 9, and the reproduction frequency characteristic of the organic electroluminescent panel speaker which concerns on the 1st Embodiment of this invention shown in FIG. It is a figure which shows the organic electroluminescent panel speaker which concerns on the 3rd Embodiment of this invention, (A) is the perspective view seen from the back side, (B) is an exploded perspective view of the organic electroluminescent panel speaker shown to (A). FIG. It is sectional drawing in the cutting line AA shown to FIG. 13 (A). It is a graph which shows the reproduction frequency characteristic of the organic electroluminescent panel speaker shown to FIG. 13 and FIG. It is a figure which shows the piezoelectric vibrating body attached to the organic EL panel speaker shown to FIG. 13 and FIG. 14, and the fixture for attaching this piezoelectric vibrating body to an organic EL panel, (A) is when these are comprised integrally. It is the perspective view which looked at the state from the back side, (B) It is the back view, (C) is the side view. (D) is an exploded perspective view of the piezoelectric vibrating body and the fixture shown in (A), and (E) is a cross-sectional view of the piezoelectric vibrator and the fixture along the cutting line AA shown in (B). It is a figure which shows the state which hold | maintained the organic electroluminescent panel speaker shown in FIG.13 and FIG.14 to the stand, (A) is the perspective view seen from the front, (B) is the front view, (C) Is a side view thereof, and (D) is a rear view thereof. It is the figure which attached the acoustic cavity to the organic electroluminescent panel speaker shown in FIG.13 and FIG.14, (A) is the perspective view seen from the back side, (B) is an exploded perspective view. It is a figure which shows the state which hold | maintained to the stand the organic electroluminescent panel speaker with which the acoustic cavity shown in FIG. 18 was mounted | worn, (A) is the perspective view seen from the front, (B) is the front view, (C) is a side view thereof, and (D) is a rear view thereof. It is a figure which shows the state which formed the flange part in the outer periphery of the front frame of the organic electroluminescent panel speaker shown to FIG. 13 and FIG. 14, (A) is the perspective view seen from the back side, (B) is the back view. (C) is a front view. (D) is sectional drawing in the cutting line AA shown to (B), (E) is an enlarged view of the P3 part shown to (D). It is a figure which shows mounting | wearing the wall with the organic electroluminescent panel speaker shown to FIG. It is a figure which shows the organic electroluminescent panel used for the organic electroluminescent panel speaker which concerns on the 4th Embodiment of this invention, (A) is the perspective view seen from the back side, (B) is the back view. And (C) is a cross-sectional view of the organic EL panel taken along a cutting line AA shown in (B), and (D) is an enlarged view of a P4 portion shown in (C). It is a figure which shows the state which hold | maintained the organic electroluminescent panel speaker which concerns on the 4th Embodiment of this invention on the stand, (A) is the perspective view seen from the front, (B) is shown to (A). It is an exploded perspective view of an organic EL panel speaker. It is a figure which shows the state which hold | maintained the organic electroluminescent panel speaker which concerns on the 4th Embodiment of this invention to the stand, (A) is a front view, (B) is the cutting line A- shown to (A). It is sectional drawing of the organic electroluminescent panel speaker in A, (C) is an enlarged view of P5 part shown to (B). 22 shows the configuration of an organic EL panel speaker when the organic EL panel of the organic EL panel speaker shown in FIG. 22 to FIG. 24 is a top emission type organic EL panel, and FIG. ) Is a cross-sectional view of the organic EL panel speaker taken along section line AA shown in FIG. 5A, and FIG.

Explanation of symbols

1, 40, 70, 100, 107 ... Organic EL panel speaker 3, 101, 106 ... Organic EL panel 4 ... Piezoelectric vibrator (vibration actuator)
8 ... Glass substrate (substrate)
11: Metal electrode layer (reflection layer)
13 ... Hygroscopic sheet (damping member, hygroscopic material)
14 ... Sealing plate 28 ... Space 41 ... Voice coil type signal device (vibration actuator)
42 ... Front frame (frame)
44 ... Rear frame (frame)
91 ... Acoustic capacity 103 ... Sealing film 104 ... Adhesive layer 105 ... Drive plate
more than

Claims (18)

  An organic electroluminescence panel speaker comprising an organic electroluminescence panel and a vibration actuator, wherein the vibration actuator is attached to a substrate constituting a part of the organic electroluminescence panel.   An organic electroluminescence panel speaker comprising: an organic electroluminescence panel having a substrate and a sealing plate; and a vibration actuator, wherein the vibration actuator is attached to the sealing plate of the organic electroluminescence panel.   The organic electroluminescence panel speaker according to claim 2, wherein the sealing plate is attached to the main body of the organic electroluminescence panel via an adhesive layer.   The organic electroluminescence panel speaker according to claim 2 or 3, wherein the sealing plate is made of glass, metal, or resin.   The ratio of the thickness of the sealing plate to the substrate is such that the thickness of the sealing plate is thicker than one fifth of the thickness of the substrate. An organic electroluminescence panel speaker as described in 1.   The organic electroluminescence panel speaker according to any one of claims 1 to 5, wherein the sealing plate is bonded to the organic electroluminescence panel without forming a space.   6. The organic electroluminescent panel speaker according to claim 2, wherein a space is formed between the sealing plate and the reflective layer of the organic electroluminescent panel.   The organic electroluminescence panel speaker according to claim 7, wherein a damping member is disposed in the space.   The organic electroluminescence panel speaker according to claim 7, wherein the damping member is a hygroscopic material.   The organic electroluminescence panel speaker according to claim 7, wherein an inert gas is sealed in the space.   The organic electroluminescent panel speaker according to claim 7, wherein the space is filled with a liquid.   The organic electroluminescence panel speaker according to any one of claims 7 to 9, wherein the space is filled with a gel-like substance.   The organic electroluminescence panel speaker according to any one of claims 1 to 12, wherein the organic electroluminescence panel is sealed with a sealing film.   The organic electroluminescence panel speaker according to claim 13, wherein the vibration actuator is attached to the sealing film via a drive plate. A frame for holding the organic electroluminescence panel;
The organic electroluminescence panel speaker according to claim 1, wherein at least a part of the vibration actuator is supported by the frame body.   The organic electroluminescence panel speaker according to any one of claims 1 to 15, wherein an acoustic capacity is provided on a back side of the organic electroluminescence panel.   The organic electroluminescence panel speaker according to claim 13, wherein the sealing film is made of an inorganic compound.   The organic electroluminescence panel speaker according to any one of claims 1 to 13, wherein the substrate is a metal plate.

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