Clamp for fixing sound device and sound inspection device including the same

Abstract

Provided are a fixture for fixing an audio device and an audio inspection device including the same. The audio inspection device includes a test box. The test box includes a void space formed inside and an opening formed on one side. A microphone is fixedly arranged in the void space of the test box. The fixture opens or closes the opening of the test box, and the audio device is installed on a first surface facing the opening of the test box. Negative pressure is formed on at least a portion of the first surface of the fixture connected to the audio device, and the audio device is fixed to the fixture.

Description

Technical Field

[0001] Embodiments of the present invention relate to a jig of fixing sound device and a sound inspection device including the jig. Background Art

[0002] The acoustic inspection of an acoustic device (e.g., a piezoelectric speaker) is performed in an anechoic chamber and / or using an anechoic box. The inner surface of the anechoic chamber and the anechoic box is mostly covered with sound absorbing materials, and is designed to minimize the reflection of the sound. There are some differences in the size of the space.

[0003] The acoustic device is fixed inside the anechoic box by a bracket, a frame, etc., and the acoustic inspection is performed in a state where the anechoic box is sealed.

[0004] Recently, a panel speaker has been developed in which a display panel itself, which displays an image, is used as a vibration plate.

[0005] A general acoustic device is configured such that a metal plate (eg, a spacer) that functions as a vibration plate flows from the main body of the acoustic device. Thus, even if the acoustic device is fixed inside a muffler box using a bracket or the like, the acoustic inspection of the general acoustic device can be performed normally.

[0006] However, in the case of a panel speaker, especially a panel speaker in a semi-modular state with a partially curved front, it is difficult to fix the back of the panel speaker, so a portion of the front of the panel speaker is fixed in the muffler box. In the panel speaker, the front of the panel acts as a vibration plate, so the vibration characteristics of the panel speaker vary depending on the fixing method (and fixing position) of the front part of the panel speaker, and the sound characteristics of the panel speaker cannot be accurately checked. Summary of the invention

[0007] An object of the present invention is to provide an audio device fixing jig and an audio inspection device that can more accurately inspect the acoustic characteristics of various audio devices including panel speakers.

[0008] In order to achieve one purpose of the present invention, an embodiment of the present invention relates to a sound inspection device comprising: a test box, comprising a void space formed inside and an opening formed on one side; a microphone fixedly arranged in the void space of the test box; and a fixture, which opens or closes the opening of the test box and installs a sound device on a first surface facing the opening of the test box. Negative pressure is formed on at least a portion of the first surface of the fixture connected to the sound device, and the sound device is fixed to the fixture.

[0009] According to an embodiment, the sound inspection device may further include a vacuum pump for forming a negative pressure on the at least a portion of the first surface of the fixture.

[0010] According to an embodiment, the fixture may include: a vacuum hole formed on the first surface; and a vacuum pad installed in at least a portion of the vacuum hole, and the audio device is fixed by the vacuum pad.

[0011] According to an embodiment, the vacuum pad may be elastic, and the portion in contact with the vacuum pad allows the acoustic device to vibrate.

[0012] According to an embodiment, when the test box is sealed by the fixture, the audio device installed in the fixture does not contact the test box and is separated from the test box.

[0013] According to an embodiment, at least a portion of the vacuum holes of the clamp may be connected to each other.

[0014] According to one embodiment, the first surface of the clamp may include a first area and a second area that are distinguished from each other, the first vacuum holes in the vacuum holes located in the first area are connected to each other, and the second vacuum holes in the vacuum holes located in the second area are connected to each other and separated from the first vacuum holes.

[0015] According to an embodiment, the audio device may include: a display panel displaying an image on one side; and a vibration audio element disposed on the other side of the display panel, and the vacuum pad is in contact with the other side of the display panel.

[0016] According to an embodiment, the vacuum pad may not overlap with the vibration acoustic element.

[0017] According to an embodiment, the vibration acoustic element may be spaced apart from the first surface of the fixture by more than 20 μm.

[0018] According to one embodiment, the sound inspection device may further include a covering component, which is arranged between the clamp and the sound device on the entire first surface of the clamp and is separated from the sound device, and the covering component includes at least one of polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC), polyetherimide (PEI), polyethersulfone (PES), polyetheretherketone (PEEK) and polyimide (PI).

[0019] According to an embodiment, the covering member may cover a portion of the vacuum hole that does not overlap with the vacuum pad.

[0020] According to an embodiment, the test box may further include a sealing component disposed along an edge of the opening, and when the test box is connected to the fixture, the test box is sealed by the sealing component.

[0021] According to one embodiment, the fixture may include: a cutout portion formed on the first surface along at least a portion of an edge of the first surface; and at least one vacuum pad installed on the cutout portion, and the audio device is fixed by the at least one vacuum pad.

[0022] According to one embodiment, the audio device may include: a display panel that displays an image on one side; and a vibration audio element that is arranged on the other side of the display panel, the fixture includes a groove formed in a first area of ​​the first side and a plurality of vacuum holes formed in a second area of ​​the first side, the first area overlaps with the vibration audio element and the first area is separated from the vibration audio element, and the second area is directly connected to the other side of the display panel.

[0023] According to an embodiment, the second area may surround the first area, and the groove may form a reverberation space between the other surface of the display panel and the clamp.

[0024] According to one embodiment, the sound inspection device may further include an elevator for lifting and lowering the fixture in a first direction perpendicular to the first surface, the elevator including: a lifting guide portion extending in the first direction from the one side of the test box; and a lifting portion coupled to the second surface of the fixture and moving along the lifting guide portion in the first direction.

[0025] According to an embodiment, the sound inspection device may further include a moving device, which forms a negative pressure on the at least a portion of the first surface of the fixture and moves the fixture toward the test box.

[0026] According to an embodiment, the opening may be formed on a lower surface of the test box, the fixture is disposed on a lower side of the test box, and at least one of the fixture and the test box moves.

[0027] In order to achieve an object of the present invention, an embodiment of the present invention relates to a clamp for fixing an audio device, comprising: a main body, including a vacuum hole formed on one side; a vacuum pad, installed in at least a part of the vacuum hole; and a covering member, arranged on the entire one side of the main body and including an opening overlapping with the vacuum pad, the vacuum pad protruding more than the covering member. The vacuum pad is used to vacuum clamp the audio device.

[0028] The audio device fixing fixture and the audio inspection device according to the embodiments of the present invention can fix the audio device by vacuum from the back side using a vacuum pad or a vacuum suction cup, thereby minimizing the change in the acoustic characteristics of the panel speaker vibrating on the front side of the panel, and can more accurately inspect the acoustic characteristics of the audio device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1a as well as Figure 1b It is a diagram showing a sound inspection device according to an embodiment of the present invention.

[0030] Figure 2a as well as Figure 2b It is shown Figure 1a A cross-sectional view of an example of a sound inspection device.

[0031] Figures 3a to 3e It is shown Figure 2a A rear view of an example of a fixture included in the sound inspection device.

[0032] Figure 4a as well as Figure 4b It is shown Figure 2a A rear view of another example of a fixture included in the sound inspection device.

[0033] Figure 5 It is shown in Figure 2a An exploded perspective view of an example of an audio device inspected by the audio inspection device.

[0034] Figure 6 It is shown Figure 5 A rear view of an example of an audio device.

[0035] Figure 7a as well as Figure 7b It is shown Figure 2a A diagram showing an example of a fixture included in a sound inspection device.

[0036] Figure 8 It is shown Figure 2a FIG. 1 is a diagram showing another example of a fixture included in the sound inspection device.

[0037] Fig. 9 It is shown that Figure 8 A rear view of an example of an acoustic device fixed by a clamp.

[0038] Fig.10 It is shown Figure 1a A stereoscopic diagram of another example of a sound inspection device.

[0039] Fig.11 It is shown Figure 1aA stereoscopic diagram of another example of a sound inspection device.

[0040] Fig.12 It is shown Figure 1a A stereoscopic diagram of another example of a sound inspection device. DETAILED DESCRIPTION

[0041] The present invention can be modified in many ways and has many forms. Specific embodiments are illustrated in the drawings and described in detail in the specification. However, the present invention is not limited to the embodiments disclosed below and can be implemented in many forms.

[0042] On the other hand, in order to clearly illustrate the present invention, some components that are not directly related to the features of the present invention may be omitted in the drawings. In addition, the size or proportion of some components in the drawings may be exaggerated. In the entire drawings, for the same or similar components, even if they appear in different drawings, the same reference numbers and symbols are given as much as possible, and repeated descriptions are omitted.

[0043] Figure 1a as well as Figure 1b It is a diagram showing a sound inspection device according to an embodiment of the present invention.

[0044] Reference Figure 1a as well as Figure 1b The sound inspection device 100 may include a test box 110 and a fixture 120 (or a fixture for fixing an audio device or a fixture for fixing a speaker).

[0045] The test box 110 may include a void space VS (hollow space) formed inside and an opening OP formed at one side. The test box 110 is illustrated as having a rectangular parallelepiped shape, but the shape of the test box 110 is not limited as long as the test box 110 has a void space.

[0046] Will refer to Figure 2a The specific structure of the test box 110 will be described later.

[0047] The jig 120 may open or close the opening OP of the test box 110. The jig 120 has a larger area than the opening OP of the test box 110 and may cover the opening OP.

[0048] An audio device (or an audio inspection object, a speaker, not shown) may be installed on the back side of the fixture 120 (i.e., the first side facing the opening OP of the test box 110). The audio device includes a piezoelectric speaker and a panel speaker determined by the type of the vibration element (or vibration plate), and may include a semi-module product, a module product, a finished product, etc. according to the product type. In addition, the size and shape of the audio device are not particularly limited.

[0049] exist Figure 1a as well as Figure 1b , the clamp 120 is illustrated as having a plate-like or rectangular shape (e.g., a planar shape in which the length in the first direction DR1 is longer than the length in the second direction DR2), however, the shape of the clamp 120 is not limited to a specific shape as long as the clamp 120 provides a back surface (e.g., a substantially flat first surface) on which the audio device can be installed.

[0050] In an embodiment, negative pressure may be formed at least partially on the back side of the jig 120. In this case, the audio device may be fixed to the back side of the jig 120 by the negative pressure.

[0051] In one embodiment, the fixture 120 may include a vacuum hole (or outlet) VACOUT formed on the back side and a vacuum pad (or suction pad) VACPAD installed in at least a portion of the vacuum hole. Negative pressure is formed on the vacuum pad VACPAD (or vacuum hole), and the audio device may be fixed on the fixture 120 through the vacuum pad VACPAD.

[0052] like Figure 1b As shown, the fixture 120 may include: an inlet VACIN formed on one side; an outlet VACOUT formed on the back; and a vacuum pad VACPAD installed in a portion of the outlet VACOUT. The inlet VACIN and the outlet VACOUT are connected, and when a negative pressure is applied to the inlet VACIN, a negative pressure may be formed at the outlet VACOUT, which will be referred to below. Figure 2a Narrative.

[0053] In order to form a contact surface with the surface of the audio device, the vacuum pad VACPAD has a relatively wide bottom surface and may include a through hole penetrating through the bottom surface and connected to the inlet VACIN. The vacuum pad VACPAD may have a sucker disc shape.

[0054] When negative pressure is applied to the inlet VACIN in a state where the acoustic device is in contact with the vacuum pad VACPAD, the acoustic device may be vacuum clamped to the jig 120 by the vacuum pad VACPAD.

[0055] In one embodiment, the vacuum pad VACPAD is made of rubber, silicon, etc. and may have elasticity. In this case, the vacuum pad VACPAD may allow the sound device that vibrates to generate sound to flow or move along the third direction DR3. For example, even if a panel speaker that uses the entire display panel as a vibration plate is fixed to the fixture 120, the vacuum pad VACPAD may allow the entire display panel to vibrate. Thus, even if the panel speaker is fixed to the fixture 120, the sound characteristics of the panel speaker may not change.

[0056] As reference Figure 1a as well as Figure 1b As described above, the sound inspection device 100 can fix the sound device using vacuum fixing technology. In addition, the sound inspection device 100 does not allow or hinder the vibration of the sound device using an elastic vacuum pad, so that changes in the sound characteristics of the sound device such as a panel speaker can be minimized. As a result, the sound inspection device 100 can more accurately inspect the sound characteristics of the sound device.

[0057] Figure 2a as well as Figure 2b It is shown Figure 1a A cross-sectional view of an example of a sound inspection device. Figure 2a as well as Figure 2b The middle figure shows the sound inspection device 100 cut along the second direction DR2. Figure 2a The middle figure shows the open state of the sound inspection device 100. Figure 2b The middle figure shows the closed state of the sound inspection device 100 .

[0058] First, refer to Figure 2a The sound inspection device 100 may include a test box 110 , a fixture 120 , a microphone 130 , a vacuum pump (or a pressure reducing device) 240 , and a controller (or an analyzer) 250 .

[0059] The test box 110 may include a body portion (or, housing) 111 , a cover portion (or, upper plate) 112 , and a sound absorbing member 113 .

[0060] The body 111 may constitute the lower surface (or, bottom surface) and the side surface of the test box 110. The body 111 may be made of aluminum, wood, etc. The body 111 may be constructed as a single layer or multiple layers including mutually different materials.

[0061] The cover 112 is plate-shaped and can constitute the upper surface of the test box 110. The cover 112 can be combined with the upper portion of the main body 111 (or the side wall of the main body 111) through another fastening member. An opening OP that exposes the inside of the main body 111 can be formed in the cover 112. The opening OP can be different depending on the size of the fixture 120 (or the audio device 10).

[0062] exist Figure 2a In the description, the cover 112 is described as being detachable from the main body 111 so that the inspection of the audio devices 10 of various sizes can be easily performed. However, the cover 112 is not limited to this. For example, the cover 112 may be formed integrally with the main body 111.

[0063] The cover portion 112 may include a sealing member SM disposed on an upper surface of the cover portion 112 along an edge of the opening OP. Figure 2b As shown, when the test box 110 is connected to the fixture 120 (or when the fixture 120 is bonded and fixed to the test box 110), the sealing member SM can seal the test box 110. For example, the sealing member SM can be an O-ring.

[0064] For example, the cover 112 includes a groove forming a closed loop along the edge of the opening OP, and the sealing member SM can be disposed in the groove. The groove can be formed in the protrusion PR partially protruding from the cover 112. The cover 112 can also include a plurality of (eg, two, three) sealing members SM.

[0065] The sound absorbing member 113 may be disposed on the entire inner side of the test box 110. The sound absorbing member 113 may include a sponge material, and may absorb the sound generated from the sound device 10 to prevent or minimize the generation of reflected sound. The sound absorbing member 113 has an inner side having a concave-convex structure (i.e., a concave-convex pattern), and may have, for example, the shape of an egg plate.

[0066] The microphone 130 may be fixedly disposed in the hollow VS of the test box 110. The microphone 130 may sense the sound generated by the sound device 10. The microphone 130 may be configured to be spaced about 0.1 cm to 10 cm from the sound device 10. For example, the microphone 130 may be fixed to a support member 114 protruding from the bottom surface of the test box 110.

[0067] The microphone 130 is connected to the controller 250 via a signal line, and can provide the controller 250 with the sensed sound (ie, a sound signal).

[0068] The jig 120 may include an inlet VACIN, an outlet VACOUT, and a vacuum pad VACPAD. The inlet VACIN, the outlet VACOUT, and the vacuum pad VACPAD are respectively Figure 1bThe inlet VACIN, outlet VACOUT, and vacuum pad VACPAD described above are substantially the same, and thus will not be described again.

[0069] The jig 120 may further include a vacuum line VACLINE. The vacuum line VACLINE passes through the body of the jig 120 and may connect an inlet VACIN and an outlet VACOUT.

[0070] The vacuum pump 240 is connected to the inlet VACIN of the jig 120 and can form negative pressure on the back of the jig 120. When the vacuum pump 240 applies negative pressure to the inlet VACIN of the jig 120, negative pressure can be formed on the vacuum pad VACPAD through the vacuum line VACLINE and the outlet VACOUT.

[0071] like Figure 2a As shown, in a state where the test box 110 is opened (ie, in a state where the jig 120 is separated from the test box 110 ), the audio device 10 may be provided at a lower portion of the jig 120 .

[0072] When the acoustic device 10 is in contact with the vacuum pad VACPAD, the vacuum pump 240 is operated to form negative pressure on the vacuum pad VACPAD (or the back side of the jig 120 ), and the acoustic device 10 can be vacuum clamped to the jig 120 .

[0073] Later, if Figure 2b As shown, the fixture 120 or the test box 110 moves along the third direction DR3, and the fixture 120 can pressurize the test box 110. The acoustic device 10 vacuum-fixed to the fixture 120 can be installed in the test box 110 (or the hollow space VS).

[0074] When the test box 110 is sealed by the jig 120, the audio device 10 mounted on the jig 120 may not contact the test box 110 but may be separated from the test box 110. That is, the entire front surface of the audio device 10 may be exposed due to the opening OP of the test box 110.

[0075] When the audio device 10 generates sound, the microphone 130 senses the sound and may provide a sound sensing signal to the controller 250 .

[0076] Furthermore, the vacuum pad VACPAD vacuum-fixes the back side (i.e., the side other than the front side facing the microphone 130) of the audio device 10, so that the front side of the audio device 10 can be exposed toward the microphone 130. Thus, the sound generated on the entire front side of the audio device 10 can be transmitted to the microphone 130 without interference or obstacles.

[0077] The controller 250 may determine whether the acoustic characteristics (eg, pressure levels of sounds of different frequencies) of the acoustic device 10 satisfy reference acoustic characteristics based on the acoustic perception signal. The controller 250 may be implemented by a computer device that executes a common acoustic check program.

[0078] After performing the sound check on the sound device 10, as shown in FIG. Figure 2a As shown, when the test box 110 is opened again, the negative pressure formed on the back side of the jig 120 is released, so that the acoustic device 10 can be unloaded from the jig 120 .

[0079] As reference Figure 2a as well as Figure 2b As described above, the sound inspection device 100 can vacuum-fix the back side of the sound device 10 (i.e., the side not facing the microphone 130). Thus, the sound generated on the entire front side of the sound device 10 can be transmitted to the microphone 130 without interference or obstacles, and the sound characteristics of the sound device 10 can be inspected more accurately.

[0080] Figures 3a to 3e It is shown Figure 2a A rear view of an example of a fixture included in the sound inspection device. Figures 3a to 3e The figure shows various configurations of the outlet (or vacuum hole) VACOUT of the clamp 120.

[0081] First, refer to Figure 3a , the outlet VACOUT may be dispersedly arranged on the back side of the fixture 120. On the other hand, the outlet VACOUT has a circular planar shape, but this is only an example, and the outlet VACOUT is not limited thereto.

[0082] The outlets VACOUT may be configured to be spaced apart from each other along the first direction DR1 and the second direction DR2 .

[0083] For example, four outlets having a first interval and being spaced apart from each other are arranged in the odd-numbered rows, and two outlets having a second interval larger than the first interval and being spaced apart from each other may be arranged in the even-numbered rows. That is, the outlets VACOUT are arranged to be spaced apart from each other, but the spacing distances between the outlets VACOUT may be different from each other. This is because the audio device 10 (see Figure 3b ) In addition to the rectangular planar shape, the back of the audio device 10 can have a variety of planar shapes, and there are many shapes that can be directly connected through the vacuum pad VACPAD without interference, which will be explained below.

[0084] In an embodiment, at least some of the outlets VACOUT may be connected to each other.

[0085] In one embodiment, the outlet VACOUT may be connected to the inlet VACIN via a vacuum line VALINE.

[0086] Reference Figure 3b , corresponding to the audio device 10, a portion of the outlets VACOUT may be configured or installed with a vacuum pad VACPAD. The vacuum pad VACPAD may be configured in a portion of the outlets VACOUT that overlap with the audio device 10. For example, two vacuum pads VACPAD may be configured in the first row and the fifth row of the five rows formed by the outlets VACOUT. For example, the edge portion of the panel speaker (or module) is supported by the panel cover, and therefore, correspondingly, a vacuum pad VACPAD may be configured in the edge area of ​​the audio device 10. The outlet VACOUT not configured with the vacuum pad VACPAD may be sealed by another cover (closure), but is not limited to this.

[0087] As another example, refer to Figure 3c The audio device 10 corresponds to the second to fourth rows of the five rows formed by the outlets VACOUT, and two vacuum pads VACPAD may be respectively arranged in the second row and the fourth row corresponding to the edge of the audio device 10 .

[0088] In one embodiment, the outlet VACOUT may be connected to the inlets VACIN1 to VACIN5 via vacuum lines VALINE1 to VALINE5 .

[0089] Reference Figure 3d , the first vacuum line VACLINE1 is connected to the first inlet VACIN1, the first vacuum line VACLINE1 extends along the second direction, and can be connected to the outlet VACOUT configured in the first row. The second vacuum line VACLINE2 to the fifth vacuum line VACLINE5 are arranged along the second direction DR2, similar to the first vacuum line VACLINE1, the second vacuum line VACLINE2 to the fifth vacuum line VACLINE5 are connected to the second inlet VACIN2 to the fifth inlet VACIN5, and the second vacuum line VACLINE2 to the fifth vacuum line VACLINE5 can be connected to the outlet VACOUT configured in the corresponding row. For example, in providing Figure 3b In the case of the illustrated audio device 10, negative pressure may be applied only to the first inlet VACIN1 and the fifth inlet VACIN5. Figure 3c In the case of the illustrated acoustic device 10 , negative pressure may be applied only to the second inlet VACIN2 and the fourth inlet VACIN4 .

[0090] Reference Figure 3e , the back of the jig 120 may include a first area A1, a second area A2, and a third area A3 that are distinguished from each other. The first area A1 may be a central area having a specific size based on the area center of the back of the jig 120, the second area A2 may be an intermediate area surrounding the first area A1 and located between the first area A1 and the third area A3, and the third area A3 may be an edge area of ​​the back of the jig 120 surrounding the second area A2. The first area A1 to the third area A3 may be set according to the types of different sizes of the audio device 10.

[0091] The first outlet VACOUT1 configured in the first area A1 is connected to the first inlet VACIN1, the second outlet VACOUT2 configured in the second area A2 is connected to the second inlet VACIN2, and the third outlet VACOUT3 configured in the third area A3 can be connected to the third inlet VACIN3. Thus, the first outlet VACOUT1, the second outlet VACOUT2 and the third outlet VACOUT3 can be controlled independently of each other.

[0092] As reference Figures 3a to 3e As described above, the outlets VACOUT may be distributed in various ways on the back of the jig 120 , and vacuum pads VACPAD may be disposed at at least a portion of the outlets VACOUT corresponding to the audio device 10 . Thus, the audio device 10 of various sizes and shapes may be fixed to the jig 120 by vacuum.

[0093] In addition, at least a portion of the outlets VACOUT of the clamp 120 may be connected to each other or grouped together. Thus, the pressure at the outlet VACOUT (or the outlet VACOUT forming a negative pressure) can be easily controlled.

[0094] On the other hand, Figures 3a to 3e The middle figure shows that the outlet (or, vacuum hole) VACOUT and the vacuum pad VACPAD have a circular planar shape, but are not limited thereto.

[0095] Figure 4a as well as Figure 4b It is shown Figure 2a A rear view of another example of a fixture included in the sound inspection device.

[0096] Reference Figure 4a as well as Figure 4b The jig 120 may include cutout portions VACOUT1 and VACOUT2 formed along at least a portion of an edge of a rear surface and at least one vacuum pad VACPAD1 and VACPAD2 mounted on the cutout portions.

[0097] like Figure 4aAs shown, on a plane, the first cutout portion (or, first outlet) VACOUT1 may have a specific width and form a closed loop along the edge of the back side of the fixture 120, and the first cutout portion VACOUT1 is arranged adjacent to the edge of the back side. Although not shown, the first cutout portion VACOUT1 may be connected to the reference Figure 2a Described input VACIN connection.

[0098] The first vacuum pad VACPAD1 corresponds to the first cutout portion VACOUT1 , forms a closed loop along the edge of the back surface of the jig 120 , and is disposed at the first cutout portion VACOUT1 .

[0099] In this case, the audio device 10 (see Figure 2a ) The portion in contact with the fixture 120 can be shown with a line instead of a point.

[0100] like Figure 4b As shown, on a plane, the second cutout portion (or, second outlet) VACOUT2 may have a specific width and extend along the second direction DR2, and the second cutout portion VACOUT2 is disposed adjacent to the upper edge and the lower edge of the back side of the clamp 120. Although not shown, the second cutout portion VACOUT2 may be connected to the reference Figure 2a Described input VACIN connection.

[0101] The second vacuum pad VACPAD2 may extend along the second direction DR2 corresponding to the second cutout portion VACOUT2 and be disposed at the second cutout portion VACOUT2.

[0102] As reference Figure 4a as well as Figure 4b As described above, the cutout portions (or outlets) VACOUT1 and VACOUT2 of the jig 120 and the vacuum pads VACPAD1 and VACPAD2 have a linear shape, and the jig 120 can also be in line contact with the acoustic device 10 .

[0103] On the other hand, Figure 4a as well as Figure 4b The middle figure shows that the cutouts (or outlets) VACOUT1, VACOUT2 and the vacuum pads VACPAD1, VACPAD2 are arranged adjacent to the back edge of the fixture 120, but the present invention is not limited thereto. For example, the cutouts (or outlets) VACOUT1, VACOUT2 and the vacuum pads VACPAD1, VACPAD2 may also be arranged adjacent to the back edge of the fixture 120. Figure 3e The first area A1 and / or the second area A2 described.

[0104] Figure 5 It is shown in Figure 2aAn exploded perspective view of an example of an audio device inspected in the audio inspection device.

[0105] Reference Figure 5 The panel speaker (or module) 50 may be an audio device.

[0106] The panel speaker 50 may include a display panel 11 and a vibration sound element 14. In addition, the panel speaker 50 may further include a functional panel 12, a window portion 13, and a cover sheet 15. The panel speaker 50 may be mounted on a bracket (or base) 20.

[0107] The display panel 11 can display images. For example, the display panel 11 can be an organic light emitting display panel. However, it is not limited thereto. For example, the display panel 11 can be other types of display panels such as an inorganic light emitting display panel and a liquid crystal display panel.

[0108] The display panel 11 may include a plurality of organic light emitting elements disposed on a substrate. The substrate may be a rigid substrate formed of glass or the like, or a flexible substrate formed of polyimide or the like. The display panel 11 may include a display portion DA and a non-display portion NDA disposed around the display portion DA.

[0109] The functional panel 12 may be disposed on the upper portion of the display panel 11. The functional panel 12 may include at least one functional layer. The functional layer may be a layer that performs a touch sensing function, a color filter function, a color conversion function, a polarization function, a biometric information recognition function (e.g., a fingerprint recognition function), etc. The functional layer may be a sheet layer formed by a thin sheet, a film layer formed by a film, a thin film layer, a coating, a panel, a plate, etc. For example, the functional layer may be a touch sensing panel, a color filter, an optical film, a fingerprint sensing panel, etc. The functional panel 12 may be omitted.

[0110] The window portion 13 may be disposed on the upper portion of the functional panel 12 (or the display panel 11). The window portion 13 may be configured to overlap with the display panel 11 and cover the front of the display panel 11. The window portion 13 may be larger than the display panel 11. The window portion 13 may include glass, sapphire, plastic, etc., and may be rigid, but is not limited thereto, and may also be flexible.

[0111] Window 13 The window 13 may include a central portion 13-1 and a light shielding pattern (or decoration) 13-2. The central portion 13-1 may overlap with the display portion DA of the display panel 11 and allow light emitted from the display portion DA to pass through. The light shielding pattern 13-2 is located at the edge of the window 13 and overlaps with the non-display portion NDA of the display panel 11, thereby preventing the non-display portion NDA from being recognized.

[0112] The vibration acoustic element (or vibrator, actuator) 14 may generate vibration in response to an acoustic signal provided from the outside (eg, an application processor). The vibration acoustic element 14 may be implemented by a piezoelectric element including a vibrating material layer.

[0113] For example, the vibration sound element 14 may include a vibration material layer, which is composed of a piezo material or the like that vibrates with the aid of an electric field. The vibration material layer may be compressed or expanded according to the polarity of the voltage applied to both ends. For example, when a negative voltage is applied, the vibration material layer may shrink, and when a positive voltage is applied, the vibration material layer may expand. According to this phenomenon, vibrations may be generated in the display panel 11 adjacent to the vibration sound element 14. The display panel 11 itself may act as a vibration plate of a speaker. That is, sound (sound) may be generated based on the pressure change of the air generated when the display panel 11 shakes due to vibration. If an organic light-emitting display panel is used as the display panel 11, sound may be generated without distortion of the image caused by vibration.

[0114] The cover sheet 15 is disposed at the lower portion of the display panel 11 and can perform heat dissipation function, electromagnetic wave shielding function, pattern visualization prevention function, grounding function, buffering function, strength enhancement function, and the like.

[0115] For example, the cover sheet 15 may be formed of an elastic buffer member and may not overlap the vibration acoustic element 14 . In this case, the vibration generated by the vibration acoustic element 14 may not be absorbed by the cover sheet 15 but may be transmitted to the display panel 11 .

[0116] The bracket 20 may be a storage container or a protective container for storing the panel speaker 50. The bracket 20 may be formed of a synthetic resin material, a metal material, or a combination of different types of materials.

[0117] The bracket 20 may include a groove 21 corresponding to the vibration acoustic element 14. When the vibration acoustic element 14 protrudes relatively downwardly more than the cover sheet 15, the vibration acoustic element 14 may be accommodated in the groove 21. The upper surface and the side surface of the vibration acoustic element 14 may be separated from the bracket 20 including the groove 21, so that the vibration space of the vibration acoustic element 14 may be ensured.

[0118] The bracket 20 may further include a hole 22 extending through the bracket 20 in the thickness direction. For example, the hole 22 may be a battery hole for inserting a battery. Although the hole 22 is shown as being separated from the groove 21, the hole 22 may be connected to the groove 21. In this case, the groove 21 and / or the hole 22 may form a reverberation space between the bracket 20 and the display panel 11 (and the outer shell) that functions as a reverberation cylinder of a speaker. The reverberation space may amplify the sound generated by the vibrating acoustic element 14. The clamp 120 (see Figure 2a ) may have a shape corresponding to (copied from) the bracket, for which reference will be made to Figure 8 to explain.

[0119] on the other hand, Figure 5 The middle figure shows that the display panel 11 (and the window portion 13) has a substantially flat upper surface, but this is only an example and the present invention is not limited thereto. For example, the portion of the display panel 11 (and the window portion 13) adjacent to the two long sides may also be bent to have a specific curvature. In this case, it is difficult to use the clamp 120 (see Figure 2a ) fixes the two long edges of the display panel 11, so as to refer to Figure 3b As described above, the vacuum pads VACPAD may be arranged corresponding to the two short sides of the display panel 11 .

[0120] Figure 6 It is shown Figure 5 A rear view of an example of a panel speaker.

[0121] Reference Figure 5 as well as Figure 6 The panel speaker 50 may further include a flexible circuit substrate 31 and a connector 32 .

[0122] The flexible circuit substrate 31 may be coupled to one side of the display panel 11 , bent toward a lower portion of the display panel 11 , and disposed on a rear surface of the display panel 11 .

[0123] The connector 32 may be formed at one end of the flexible circuit substrate 31 to be connected to an external device (eg, an image processor).

[0124] That is, other components (ie, the vibration acoustic element 14 , the flexible circuit board 31 , and the connector 32 ) may be disposed on the back surface of the panel speaker 50 in addition to the display panel 11 .

[0125] Therefore, as reference Figure 3b As described above, the clamp 120 (see Figure 3b) is in contact with the back of the panel speaker 50 (or the display panel 11), so the vacuum pad VACPAD can be configured in consideration of the components arranged on the back of the panel speaker 50. For example, by configuring the vacuum pad VACPAD so as not to overlap with the vibration acoustic element 14, and by centrally configuring the vacuum pad VACPAD in the area where the flexible circuit substrate 31 and the like are to be arranged (or, in the corresponding area if they have already been arranged), the acoustic characteristics of the finished product can be inspected by the acoustic inspection device 100.

[0126] Figure 7a as well as Figure 7b It is shown Figure 2a FIG. 1 is a diagram showing an example of a fixture included in a sound inspection device. Figure 7a The figure shows Figure 2a The corresponding cross section of the fixture 120 is Figure 7b The figure shows Figure 3b The back side of the corresponding clamp 120. On the other hand, Figure 7a The middle figure shows that the sound device 10 is a reference Figure 5 as well as Figure 6 The case of the panel speaker described above.

[0127] Reference Figure 2a as well as Figure 7a , Figure 7a The fixture 120 and the reference Figure 2a The clamp 120 described above is substantially the same or similar, and thus a repeated description thereof will not be given.

[0128] In the embodiment, the audio device 10 (or the panel speaker 50 (see Figure 5 The vibration acoustic element 14 included in the jig 120 may be spaced apart from the back surface of the jig 120 by a reference interval D0 or more. For example, the reference interval D0 may be about 1 μm or more, about 10 μm to about 200 μm, or about 20 μm to about 50 μm, and may be set based on the range in which the vibration acoustic element 14 flows along the third direction DR3 due to the vibration of the display panel 11 caused by the vibration acoustic element 14. In addition, the reference interval D0 may be set to amplify the sound generated by the display panel 11 (or the sound of a certain frequency band).

[0129] For example, the distance between the vibration acoustic element 14 and the back surface of the jig 120 can be adjusted according to the thickness of the vacuum pad VACPAD (i.e., the third direction DR3). However, the thinner the vacuum pad VACPAD is, the lower the elasticity of the vacuum pad VACPAD will be, and the more likely it is to hinder the vibration of the panel speaker.

[0130] Therefore, the sound inspection device 100 (or the jig 120 ) may further include a cover member (or a spacing adjustment member) BSP disposed between the back surface of the jig 120 and the sound object.

[0131] The cover part BSP is arranged on the entire back side of the fixture 120 and can be separated from the audio device 10. The thickness T1 of the cover part BSP is smaller than the thickness of the vacuum pad VACPAD, so that the vacuum pad VACPAD can protrude further downward than the cover part BSP. The cover part BSP can be separated from the vibration acoustic element 14 of the audio device 10 by more than the reference interval D0. By adjusting the thickness T1 of the cover part BSP, the interval between the vibration acoustic element 14 and the cover part BSP can be adjusted. Thus, the thickness of the vacuum pad VACPAD can be ensured to be above a certain thickness, and the acoustic characteristics of the panel speaker will not change.

[0132] Covering component BSP can be referenced by Figure 5 The cover member BSP may be made of the same material as the cover sheet 15 described above. The cover member BSP may include a material having excellent wear resistance and heat resistance, for example, the cover member BSP may include at least one of polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC), polyetherimide (PEI), polyethersulfone (PES), polyetheretherketone (PEEK) and polyimide (PI).

[0133] Reference Figure 7b The cover part BSP is disposed on the entire back side of the jig 120 and may include a hole (or an opening) overlapping the vacuum pad VACPAD. The cover part BSP does not overlap the vacuum pad VACPAD and may cover the outlet (or vacuum hole) VACOUT that does not overlap the vacuum pad VACPAD.

[0134] The cover member BSP can function as a cover for the corresponding outlet VACOUT by covering the outlet VACOUT that does not overlap with the vacuum pad VACPAD. For example, when negative pressure is formed at the outlet VACOUT, the cover member BSP can also strongly fit closely with the overlapping outlet VACOUT to seal the corresponding outlet VACOUT. Thus, the pressure at the outlet VACOUT can be controlled by one inlet VACIN.

[0135] As reference Figure 7a as well as Figure 7b As described above, the vibration acoustic element 14 of the acoustic device 10 can be spaced apart from the back side (or the bottom side) of the fixture 120 by a reference distance D0 or more. The acoustic inspection device 100 also includes a covering member BSP disposed on the back side of the fixture 120 between the vibration acoustic element 14 and the fixture 120, and the spacing between the vibration acoustic element 14 and the back side (or the bottom side) of the fixture 120 can be adjusted by the covering member BSP. In addition, the covering member BSP can cover the outlet (or vacuum hole) VACOUT where the vacuum pad VACPAD is not installed. Thus, the acoustic inspection device 100 can be easily applied to the inspection of various acoustic devices 10, and the acoustic inspection device 100 can be easily controlled.

[0136] Figure 8 It is shown Figure 2a FIG. 1 is a diagram showing another example of a fixture included in the sound inspection device. Figure 8 The figure shows Figure 2a The corresponding cross section of the clamp 120 . Fig. 9 It is shown that Figure 8 A rear view of an example of an acoustic device fixed by a clamp. Fig. 9 The figure shows Figure 6 The back side of the corresponding audio device 10. Figure 8 as well as Fig. 9 The middle figure shows that the sound device 10 is a reference Figure 5 as well as Figure 6 The case of the panel speaker described above.

[0137] Reference Figure 2a as well as Figure 8 , Figure 8 The fixture 120 includes a vacuum chuck (VACCH) instead of a vacuum pad, which is similar to Figure 2a The fixture 120 is different. In addition to the vacuum chuck VACCH, Figure 8 The fixture 120 and the reference Figure 2a The clamp 120 described above is substantially the same or similar, and thus a repeated description thereof will not be given.

[0138] The vacuum chuck VACCH can have the same Figure 5 The bracket 20 described above is of similar size and similar shape.

[0139] like Figure 8 As shown, the vacuum chuck VACCH is configured on the back of the fixture 120, and can include a bracket 20 (refer to Figure 5 ) of the groove 21 corresponding to the groove GRV (groove). Fig. 9As shown, the groove GRV of the vacuum cup VACCH may be formed in the first area A1 overlapping the vibration acoustic element 14. The vibration acoustic element 14 may be accommodated in the groove GRV of the vacuum cup VACCH.

[0140] The vibration acoustic element 14 (or the upper surface and side surface of the vibration acoustic element 14) is spaced apart from the vacuum chuck VACCH including the groove GRV by a reference distance D0 or more, thereby providing a vibration space for the vibration acoustic element 14. Figure 7a As described above, the reference interval D0 may be approximately 1 μm or more, approximately 10 μm to approximately 200 μm, or approximately 20 μm to approximately 50 μm.

[0141] The vacuum chuck VACCH can be connected with the bracket 20 (refer to Figure 5 )The same material as the above, for example, the vacuum suction cup VACCH can be made of synthetic resin material, metal material or a combination of different types of materials.

[0142] In addition, the vacuum chuck VACCH may further include a vacuum hole VACHOLE formed in the second area A2 except the first area A1.

[0143] The vacuum holes VACHOLE can be dispersedly arranged in the entire second area A2. The second area A2 of the vacuum suction cup VACCH can be directly connected to the display panel 11. When negative pressure is formed in the vacuum hole VACHOLE through the inlet VACIN and the vacuum line VACLINE, the vacuum hole VACHOLE can make the entire second area A2 fit tightly with the display panel 11. That is, the vacuum suction cup VACCH is in surface contact with the display panel 11 (or, the audio device 10), so that the audio device 10 can be vacuum fixed.

[0144] In one embodiment, the vacuum chuck VACCH may further include a bracket 20 (see Figure 5 ) hole (or, battery hole) 22 corresponding to the hole. Fig. 9 As shown, the hole of the vacuum chuck VACCH may be formed in the third area A3. Figure 5 Similar to the hole 22 of the bracket 20 described above, the vacuum cup VACCH can form a reverberation space that acts as a reverberation cylinder of a speaker between the display panel 11 and the vacuum cup VACCH (or the fixture 120) together with the groove GRV. Thus, the sound inspection device 100 including the vacuum cup VACCH can inspect the sound characteristics of the semi-finished product (or semi-module product).

[0145] As reference Figure 8 as well as Fig. 9As described above, the jig 120 can also use the vacuum suction cup VACCH of the bracket 20 that replicates the panel speaker to check the acoustic characteristics of the panel speaker in the finished state.

[0146] Fig.10 It is shown Figure 1a A stereoscopic diagram of another example of a sound inspection device.

[0147] Reference Figure 1a as well as Fig.10 , Fig.10 The sound inspection device 100_1 also includes a lift, which is similar to Figure 1a The sound inspection device 100 is different. In addition to the elevator, Fig.10 The sound inspection device 100_1 and Figure 1a The sound inspection device 100 is substantially the same as or similar to that of the present invention, and thus a repeated description thereof will not be given.

[0148] The elevator may enable the jig 120 to be elevated in the third direction DR3 (ie, a direction perpendicular to the back side of the jig 120 ). The elevator may include an elevation guide portion 1040 and an elevation portion 1050 .

[0149] The lifting guide 1040 may extend along the third direction DR3 from the upper surface of the test box 110. For example, the lifting guide 1040 has a bar shape extending along the third direction DR3 and may be provided on both sides with reference to the fixture 120 (or the opening of the test box 110).

[0150] The lifting part 1050 is coupled to the upper surface of the clamp 120 and can move in the third direction along the lifting guide part 1040. For example, the lifting part 1050 is coupled to the clamp 120 at the central portion and can be slidably coupled to the lifting guide part 1040 by having holes having a shape corresponding to the cross-sectional shape of the lifting guide part 1040 at both end portions.

[0151] Although not in Fig.10 As shown in the figure, however, clamping components can also be provided on both side ends of the lifting portion 1050, which can be fastened to fastening protrusions (not shown) formed on the outer surface of the test box 110 when the lifting portion 1050 is fully lowered (for example, when the test box 110 is closed). Similarly, when the lifting portion 1050 is fully raised (for example, when the test box 110 is opened), it can be fastened to fastening protrusions (not shown) formed on the upper side ends of the lifting guide 1040.

[0152] Fig.11 It is shown Figure 1a A stereoscopic diagram of another example of a sound inspection device.

[0153] Reference Figure 1aas well as Fig.11 , Fig.11 The sound inspection device 100_2 also includes a mobile device 1160. Figure 1a The sound inspection device is different.

[0154] The moving device 1160 is combined with the fixture 120, and the fixture 120 can be used to absorb (or vacuum fix) the sound device to move toward the test box 110. For example, the moving device 1160 is composed of a mechanical arm, and the reference Figure 2a Similar to the vacuum pump described above, negative pressure is formed on the back side of the fixture 120 to fix the acoustic device in vacuum, and the sucked acoustic device can be moved toward the test box 110 or released from the test box 110 .

[0155] On the other hand, Fig.11 The figure shows that the moving device 1160 is combined with the fixture 120, but the moving device 1160 is not limited to this. For example, the moving device 1160 can also be combined with the test box 110, and the moving device 1160 moves the test box 110, and the fixture 120 moves by referring to Figure 2a The separately provided vacuum pump described above is fixed by vacuum.

[0156] Fig.12 It is shown Figure 1a A stereoscopic diagram of another example of a sound inspection device.

[0157] Reference Figure 1a as well as Fig.12 , Fig.12 The sound inspection device 100_3 can be used with Figure 1a The state of the sound inspection device 100 turned upside down is substantially the same or similar. Therefore, the description will not be repeated.

[0158] Reference Figure 5 For example, during the manufacturing process of the panel speaker, the panel speaker may be configured such that the window portion 13 faces the third direction DR3 (or the upper direction). In this case, in order to apply the panel speaker to Figure 1a The sound inspection device 100 may need to rotate the panel speaker 180 degrees up and down and fix the back of the panel speaker by vacuum. That is, it may also be necessary to turn the panel speaker upside down.

[0159] Therefore, if Fig.12 As shown, an opening OP is formed on the back of the test box 110, and the fixture 120 is arranged at the lower part of the test box 110 and fixes the sound device in vacuum. The fixture 120 and / or the test box 110 can move along the third direction DR3. For example, the fixture 120 or the test box 110 can be moved by referring to Fig.11The moving device 1160 described above moves. This can shorten the inspection time (or the inspection preparation time).

[0160] The scope of the present invention is not limited to the contents described in the detailed description of the specification, but should be determined by the claims. In addition, it should be interpreted that the meaning and scope of the claims and all changes or modifications derived from their equivalent concepts should be included in the scope of the present invention.

Claims

1. A sound inspection device, comprising: A test box including a hollow formed inside and an opening formed on one side; A microphone is fixedly disposed in the hollow of the test box; A fixture, which opens or closes the opening of the test box and mounts an audio device on a first surface facing the opening of the test box; as well as a covering member, arranged between the clamp and the audio device, on the entire first surface of the clamp and spaced apart from the audio device, and used to adjust the interval between the clamp and the audio device, A negative pressure is formed on at least a portion of the first surface of the jig in contact with the acoustic device, and the acoustic device is fixed to the jig.

2. The sound inspection device according to claim 1, wherein: The fixture comprises: a vacuum hole formed on the first surface; and A vacuum pad is installed in at least a portion of the vacuum hole, The acoustic device is fixed by the vacuum pad, The vacuum pad has elasticity, and the portion in contact with the vacuum pad allows the vibration of the audio device. When the test box is sealed by the fixture, the audio device installed in the fixture does not contact the test box and is separated from the test box.

3. The sound inspection device according to claim 2, wherein: The first surface of the fixture includes a first area and a second area that are distinguished from each other, The first vacuum holes located in the first area of ​​the vacuum holes are connected to each other, Second vacuum holes located in the second region among the vacuum holes are connected to each other and separated from the first vacuum holes.

4. The sound inspection device according to claim 2, wherein: The audio device comprises: A display panel that displays an image through one side; and The vibration acoustic element is arranged on the other side of the display panel. The vacuum pad is in contact with the other surface of the display panel, The vacuum pad does not overlap the vibration acoustic element.

5. The sound inspection device according to claim 4, wherein: The vibration acoustic element is spaced apart from the first surface of the jig by more than 20 μm.

6. The sound inspection device according to claim 4, wherein: The covering member includes at least one of polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyetherimide, polyethersulfone, polyetheretherketone and polyimide. The covering member covers a portion of the vacuum hole that does not overlap the vacuum pad.

7. The sound inspection device according to claim 1, wherein: The fixture comprises: a cutout portion formed on the first surface along at least a portion of an edge of the first surface; and at least one vacuum pad mounted on the cut-out portion, The acoustic device is secured by the at least one vacuum pad.

8. The sound inspection device according to claim 1, wherein: The audio device comprises: A display panel that displays images on one side, and The vibration acoustic element is arranged on the other side of the display panel. The fixture includes a groove formed in a first area of ​​the first surface and a plurality of vacuum holes formed in a second area of ​​the first surface, The first area overlaps with the vibration acoustic element and the first area is separated from the vibration acoustic element, The second area is directly connected to the other side of the display panel. The second area surrounds the first area, The groove forms a reverberation space between the other surface of the display panel and the jig.

9. The sound inspection device according to claim 1, further comprising: a vacuum pump to form a negative pressure on at least a portion of the first surface of the fixture; as well as an elevator to lift the clamp in a first direction perpendicular to the first surface, The elevator comprises: a lifting guide portion extending from the one side of the test box in the first direction; as well as a lifting portion, coupled to the second surface of the clamp and moving along the lifting guide portion in the first direction, The test box further comprises a sealing member arranged along the edge of the opening, When the test box is connected to the fixture, the test box is sealed by the sealing component.

10. A clamp for fixing an audio device, comprising: a main body including a vacuum hole formed on one side; a vacuum pad mounted in at least a portion of the vacuum hole; as well as a covering member disposed on the entire surface of the main body and including an opening overlapping the vacuum pad, The vacuum pad protrudes further than the covering member, The sound device is fixed by vacuum through the vacuum pad. The cover member adjusts a distance between the cover member and the audio device.

Images