KR20090019176A - An exciter and display device comprsing the same - Google Patents

An exciter and display device comprsing the same Download PDF

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Publication number
KR20090019176A
KR20090019176A KR1020070083422A KR20070083422A KR20090019176A KR 20090019176 A KR20090019176 A KR 20090019176A KR 1020070083422 A KR1020070083422 A KR 1020070083422A KR 20070083422 A KR20070083422 A KR 20070083422A KR 20090019176 A KR20090019176 A KR 20090019176A
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KR
South Korea
Prior art keywords
yoke
bobbin
magnet
exciter
damper
Prior art date
Application number
KR1020070083422A
Other languages
Korean (ko)
Inventor
박종하
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020070083422A priority Critical patent/KR20090019176A/en
Publication of KR20090019176A publication Critical patent/KR20090019176A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/041—Centering
    • H04R9/043—Inner suspension or damper, e.g. spider
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

The present invention relates to an exciter and a display device including the same. In the present invention, a bobbin that linearly moves is supported by two dampers to substantially generate vibration for reproduction of sound. Therefore, according to the present invention as described above, the vibration of the exciter for reproducing sound is more accurate and efficient, and there is an advantage of preventing damage to the exciter.

Description

Excitation machine and display device including same {An exciter and display device comprsing the same}

The present invention relates to a display device, and more particularly, to an excitation device for reproducing sound and a display device including the same.

The display device provides a predetermined screen, and typically includes a speaker system for reproducing sound. In such a speaker system, a general speaker is separately embedded in a display device. Recently, an exciter for reproducing sound by vibrating a vibration plate may be built into a display device. Such exciter is disclosed in Korean Patent Application No. 2007-76119 filed by the applicant of the present invention (hereinafter referred to as 'quoting document').

The exciter disclosed in the citation includes a yoke, a magnet, a plate, a voice coil, a ring, a damper, a bobbin and a coupler. The exciter generates vibration by linear movement of the bobbin by an external force generated according to Fleming's left hand law by the interaction between the current applied to the voice coil and the magnetic force of the magnet.

However, the conventional exciter disclosed in the cited document has the following problems.

In the exciter disclosed first in the reference, the bobbin is supported by only one damper. Therefore, there is a fear that the linear motion of the bobbin may not be made accurately. That is, the bobbin is inclined at a predetermined angle with respect to the yoke, the vibration plate may not be accurately vibrated corresponding to the sound to be reproduced.

In the exciter, as described above, the bobbin may be inclined at a predetermined angle, such that contact may occur between the inner surface of the yoke and the outer surface of the voice coil. Therefore, there is a risk that the components constituting the exciter, in particular the voice coil, are damaged.

In addition, the exciter, as described above, to increase the distance between the inner surface of the yoke and the voice coil in order to prevent damage to the voice coil. However, when the gap between the inner surface of the yoke and the voice coil is increased in this way, the magnitude of the force acting on the bobbin may be reduced, thereby reducing the vibration caused by the linear motion.

The present invention is to solve the conventional problems as described above, it is an object of the present invention to provide an exciter and a display device comprising the same for the vibration to be made more accurately for the reproduction of sound.

Another object of the present invention relates to an exciter configured to prevent damage and a display device including the same.

Still another object of the present invention is to provide an exciter and a display device including the same, which are configured to make vibration more efficiently.

According to a feature of the present invention for achieving the above object, the present invention is yoke; A bobbin provided to the yoke in a linear motion; At least one magnet provided inside the yoke and generating a magnetic field; A voice coil provided on an outer circumferential surface of the bobbin and to which a current is applied; And at least two dampers for supporting the bobbin in a linear motion while maintaining a gap between the yoke and the voice coil. Includes, the damper guides the linear motion of the bobbin by the external force generated by the magnetic field of the magnet and the current applied to the voice coil.

According to another feature of the invention, the present invention, yoke; A bobbin provided to the yoke in a linear motion; At least one magnet provided inside the yoke and generating a magnetic field; A voice coil provided on an outer circumferential surface of the bobbin and to which a current is applied; First and second dampers to which the bobbin supports linear movement while maintaining a gap between the yoke and the voice coil, and one end of which is fixed to an outer surface of the bobbin; A fixing member to which at least one other end of the damper is fixed; Includes, the damper guides the linear motion of the bobbin by the external force generated by the magnetic field of the magnet and the current applied to the voice coil.

According to another feature of the invention, the present invention, the casing including a front panel; A display module provided inside the casing and reproducing an image; And the exciter according to any one of claims 1 to 14, which is provided in the casing and reproduces sound. It includes.

According to such an exciter and a display device including the same according to the present invention, the vibration of the exciter for reproducing sound is more accurate and efficient, and there is an advantage of preventing damage to the exciter.

Hereinafter, a first embodiment of an exciter and a display device including the same according to the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view showing a first embodiment of an exciter and a display device including the same according to the present invention, Figure 2 is a cross-sectional view showing the main part of the first embodiment of the present invention.

Referring to this, the casing 110 forming the appearance of the display device 100 includes a front panel 120 and a back cover 130. The front panel 120 forms an outer appearance of a front border of the display device 100. In addition, the back cover 130 forms both sides of the rear and top and bottom surfaces of the display apparatus 100. Of course, the front panel 120 may form both sides of the front and top and bottom surfaces of the display apparatus 100.

The display module 140 is installed inside the casing 110, that is, between the front panel 120 and the back cover 130. The display module 140 substantially plays a role of playing an image.

On the other hand, a mounting frame 121 is provided below the front panel 120. The mounting frame 121 is formed in a rectangular frame shape long left and right. The mounting frame 121 extends inclined downward from the bottom of the front panel 120 to the rear.

As shown in an enlarged view in FIG. 1, the mounting frame 121 is provided with a mounting portion 122. The mounting portion 122 is formed by relatively stepping the inner edge portion of the mounting frame 121 relative to other parts.

A vibration plate 150 is mounted on the mounting frame 121 and substantially the mounting portion 122. The shaking plate 150 vibrates for the reproduction of sound and at the same time transmits vibration to the front panel 120. The shaking plate 150 is formed in a rectangular plate shape long left and right corresponding to the size and shape of the mounting portion 122. Although not shown, the shaking plate 150 is fixed by a fastener such as a screw in a state in which it is mounted on the mounting frame 121.

Since the shaking plate 150 is mounted on the mounting frame 121, the shaking plate 150 substantially forms a front lower exterior of the display device 100. Accordingly, various decorations for improving the front appearance of the display device 100 may be provided on the front surface of the vibration plate 150.

2, a plurality of bosses 151 are provided on the rear surface of the shaking plate 150. The boss 151 is for fixing the exciter 200 to be described below, and extends rearward orthogonally to the rear surface of the vibration plate 150. The boss 151 has a fastening hole 152 to which the screw S to which the screw S is fastened is formed.

On the other hand, the back of the vibration plate 150 is provided with a plurality of exciter 200. The exciter 200 serves to generate vibrations for reproducing sound in the display device 100. The exciter 200 is a yoke 210, a main magnet 220, a sub-magnet 220 ', a plate 230, a bobbin 240, a voice coil 250, a ring 260, a fixed disk, respectively 270, first and second dampers 280 and 280 ′, and a connecting portion 290.

The yoke 210 forms the overall appearance of the exciter 200. The yoke 210 is formed of a flat cylindrical metal material having one side opened. Inside the yoke 210, a part of the bobbin 240 including the main magnet 220 and the sub magnet 220 ', the plate 230, the voice coil 250, a fixed disk 270, And a second damper 280 '. In addition, the yoke 210 also serves to transfer the magnetic force of the main magnet 220 and the sub-magnet 220 '.

The main magnet 220 and the sub magnet 220 ′ generate a magnetic force that generates an external force for linear movement of the bobbin 240 by interaction with a current applied to the voice coil 250. The main magnet 220 and the sub magnet 220 ′ may be formed in a disc shape. The main magnet 220 is formed in a disk shape having a relatively large diameter compared to the sub magnet 220 '. The main magnet 220 is fixed to an upper surface of the fixed disk 270 that is fixed to the bottom surface of the yoke 210. The sub magnet 220 ′ is fixed to an upper surface of the plate 230 fixed to the upper surface of the main magnet 220.

The plate 230 is positioned substantially between the main magnet 220 and the submagnet 220 '. The plate 230 is formed in a disc shape having a relatively larger diameter than at least the main magnet 220. And the plate 230, like the yoke 210, is formed of a metal material serves to transfer the magnetic force of the main magnet 220 and the sub-magnet 220 '.

The bobbin 240 is installed to be linearly movable in the vertical direction in the state in which a part thereof is located inside the yoke 210. The bobbin 240 is formed in a substantially hollow cylindrical shape. In this case, the diameter of the bobbin 240 is determined in a range in which the plate 230 is inscribed. The bobbin 240 may be formed of a material such as aluminum or paper.

The voice coil 250 is formed by a coil wound many times on the outer circumferential surface of the bobbin 240. The voice coil 250 is provided on an outer circumferential surface of the bobbin 240 so as to be located inside the yoke 210. The voice coil 250 is applied with a current corresponding to the sound to be reproduced.

The ring 260 is provided at an upper end of the drawing of the yoke 210, that is, at an edge of an open surface. The ring 260 is for fixing one end of the first damper 280. The ring 260 may be formed by injection molding a synthetic resin, for example. The inner diameter of the ring 260 has a value between the inner diameter of the yoke 210 and the outer diameter of the bobbin 240, and the outer diameter of the ring 260 has a value greater than or equal to the outer diameter of the yoke 210. . At least one pair of protrusions 261 are provided on an outer circumferential surface of the ring 260 that extends outside the yoke 210. The protrusion 261 is a through hole 262 through which the screw (S) fastened to the fastening hole 152 of the boss 151 in order to fix the exciter 200 to the back surface of the shaking plate 150. ) Is formed.

The fixed disk 270 is fixed to the bottom surface of the yoke 210. Therefore, substantially, the fixed disk 270 is provided between the yoke 210 and the main magnet 220. The fixed disk 270 is for fixing one end of the second damper 280 ′. In this embodiment, the fixed disk 270 is formed to a smaller diameter than the main magnet 220. One end of the second damper 280 ′ is fixed between the fixed disk 270 and the main magnet 220.

The first and second dampers 280 and 280 ′ may be configured such that the bobbin 240 maintains the inner circumferential surface of the yoke 210 and the outer circumferential surface of the voice coil 250 by a predetermined interval. It serves to support the linear movement up and down on the drawing. The first and second dampers 280 and 280 ′ may be formed of a material such as synthetic fiber or natural fiber. One end of the first damper 280 is fixed to one side of the outer circumferential surface of the bobbin 240 exposed to the outside of the yoke 210. The other end of the first damper 280 is fixed to one side of the ring 260. One end of the second damper 280 ′ is fixed to the lower end of the outer circumferential surface of the bobbin 240 positioned inside the yoke 210. The other end of the second damper 280 ′ is fixed between the main magnet 220 and the fixed disk 270.

In addition, the connection portion 290 is formed in a plate shape having a predetermined area is fixed to the upper end on the drawing of the bobbin 240. The connection part 290 serves to transmit the linear motion of the bobbin 240 to the shaking plate 150. To this end, the connection part 290 is in close contact with the rear surface of the vibration plate 150 when the exciter 200 is fixed to the vibration plate 150 in a fixed state on the top of the bobbin 240.

In addition, the connection part 290 also serves to substantially increase the contact area between the bobbin 240 and the vibration plate 150. That is, the contact portion 290 is formed in a plate shape compared to the upper end of the cylindrical bobbin 240 is in close contact with the back surface of the shaking plate 150, the contact area between the shaking plate 150 and the exciter 200 The vibration of the exciter 200 is increased to be transmitted to the vibration plate 150 more efficiently.

On the other hand, in this embodiment, between the inner circumferential surface of the yoke 210 and the outer circumferential surface of the voice coil 250 is maintained at an interval of 0.1 ~ 0.3mm, preferably 0.2mm. In addition, the bobbin 240 is a state in which the distance between the inner circumferential surface of the yoke 210 and the outer circumferential surface of the voice coil 250 is maintained by the first and second dampers 280 and 280 ′. Make a linear movement up and down on the drawing. The distance between the inner circumferential surface of the yoke 210 and the outer circumferential surface of the voice coil 250 is relative to an interval for preventing contact between the yoke and the voice coil by linear movement of the bobbin, that is, relative to 0.39 mm. Reduced to. By reducing the distance between the inner circumferential surface of the yoke 210 and the outer circumferential surface of the voice coil 250, the magnetic force of the main magnet 220 and the sub-magnet 220 'and the current of the voice coil 250 The magnitude of the external force generated by the interaction of the bobbin 240 may be substantially increased.

Next, the operation of the first embodiment of the exciter of the present invention and a display device including the same will be described.

When power is applied to the voice coil 250, the bobbin 240 is caused by an external force generated by the interaction between the magnetic fields of the main magnet 220 and the sub magnet 220 ′ and the current of the voice coil 250. ) Linear movement. At this time, the direction and magnitude of the current applied to the voice coil 250 are converted according to the sound to be reproduced, and the movement direction and the movement distance of the bobbin 240 are determined according to the current applied to the voice coil 250. .

In this case, the bobbin 240 is supported by the first and second dampers 280 and 280 ′. Therefore, in the process of linear movement of the bobbin 240, between the inner circumferential surface of the yoke 210 and the outer circumferential surface of the voice coil 250 is maintained at a smaller interval than in the prior art.

Meanwhile, the linear motion of the bobbin 240 is transmitted to the shaking plate 150 by the connecting portion 290. The vibration plate 150 and the front panel 120 are vibrated by the linear motion of the bobbin 240 to reproduce the sound.

Hereinafter, a second embodiment of an exciter and a display device including the same according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a cross-sectional view showing the main part of a second embodiment of an exciter and a display device including the same according to the present invention. The same configuration as that of the first embodiment of the present invention will be omitted.

Referring to this, in the exciter 300 according to the present embodiment, a fixed protrusion part inside the yoke 310 to fix the other end of the second damper 380 ′ whose one end is fixed to the outer circumferential surface of the bobbin 340. 311). That is, in this embodiment, the fixed protrusion 311 performs the role of the fixed disk 370 of the first embodiment. The fixed protrusion 311 is formed by substantially protruding the bottom center of the yoke 310 by a predetermined height in a disc shape. The main magnet 320 is fixed to the upper surface of the fixed protrusion 311. The fixed protrusion 311 is formed in a disc shape having a relatively smaller diameter than the main magnet 320. One end of the second damper 380 ′ is fixed between the fixed protrusion 311 and the main magnet 320. In the present embodiment, the remaining components of the exciter 300, that is, the sub-magnet 320 ′ and the plate 330, the voice coil 350, the ring 360, the first damper 380, and the connecting portion 390. ) Is the same as the first embodiment of the present invention.

Hereinafter, a third embodiment of an exciter and a display device including the same according to the present invention will be described in detail with reference to the accompanying drawings.

4 is a cross-sectional view showing the main part of a third embodiment of an exciter and a display device including the same according to the present invention.

Referring to this, in the exciter 400 according to the present embodiment, the other end of the second damper 480 ′ whose one end is fixed to the outer circumferential surface of the bobbin 440 is fixed between the main magnet 420 and the plate 430. do. At this time, the main magnet 420 is in the shape of a disc whose outer peripheral surface is spaced apart from the inner peripheral surface of the yoke 410 by a predetermined distance so that the bobbin 440 can be supported by the second damper 480 '. Is formed. Therefore, a predetermined space is substantially formed by the inner circumferential surface and the bottom surface of the yoke 410, the outer circumferential surface of the main magnet 420, and the bottom surface of the plate 430. . Also in this embodiment, as in the second embodiment of the present invention, the sub-magnet 420 ', the voice coil 450, the ring 460, and the first damper 480 constituting the exciter 400 are provided. , And the connection portion 490 is the same as the first embodiment of the present invention.

Within the scope of the basic technical idea of the present invention, many modifications are possible to those skilled in the art, and the scope of the present invention should be interpreted based on the appended claims. will be.

In the above embodiments, the magnet includes, but is not necessarily limited to, the main magnet and the sub magnet. That is, one magnet may generate an external force for linear movement of the bobbin.

In addition, in the above-described embodiments, the exciter is fixed to the rear surface of the vibration plate by a screw, but the exciter may be fixed by another fixing member. For example, the exciter may be fixed to the rear surface of the vibration plate by a double-sided tape or an adhesive.

According to the exciter and the display device including the same according to the present invention configured as described above, the following effects can be expected.

First, according to the present invention, the linear movement of the bobbin for the reproduction of sound is made accurately. Therefore, the vibration of the vibration plate due to the linear motion of the bobbin is also made more accurately, so that the sound can be reproduced more accurately.

In addition, in the present invention, as described above, the linear movement of the bobbin is made accurately, the contact between the yoke and the voice coil provided on the outer peripheral surface of the bobbin is prevented. Therefore, damage to the exciter can be prevented, thereby ensuring durability and operational reliability of the product.

In addition, according to the present invention, as described above, the linear movement of the bobbin is made accurately, it is possible to reduce the distance between the yoke and the voice coil to prevent damage to the voice coil. Therefore, the intensity of the external force acting on the bobbin is increased by the interaction between the magnetic force of the magnet and the current of the voice coil, thereby making the reproduction of sound of the display device more efficient.

1 is an exploded perspective view showing a first embodiment of an exciter and a display device including the same according to the present invention.

Figure 2 is a cross-sectional view showing the main part of the first embodiment of the present invention.

Figure 3 is a cross-sectional view showing the main part of a second embodiment of an exciter and a display device including the same according to the present invention.

Figure 4 is a cross-sectional view showing the main part of a third embodiment of an exciter and a display device including the same according to the present invention.

Claims (15)

With yoke; A bobbin provided to the yoke in a linear motion; At least one magnet provided inside the yoke and generating a magnetic field; A voice coil provided on an outer circumferential surface of the bobbin and to which a current is applied; And At least two dampers for supporting the bobbin in a linear motion while maintaining a gap between the yoke and the voice coil; Including, And a damper guides the linear motion of the bobbin by an external force generated by the magnetic field of the magnet and the current applied to the voice coil. The method of claim 1, The damper is, First dampers whose ends are respectively supported on one outer surface of the yoke and one outer surface of the bobbin exposed to the outside of the yoke; Second dampers whose ends are supported at one side of an inner surface of the yoke and at one side of an outer surface of the bobbin positioned inside the yoke; Excitation comprising a. The method of claim 1, The damper is, A ring provided at an outer surface of the yoke at both ends thereof, and a first damper supported at one side of the outer surface of the bobbin; Second dampers whose ends are respectively supported on an inner surface and a ring of the yoke and an outer surface of the bobbin; Excitation comprising a. The method of claim 1, And a plate provided on the other surface of the magnet, the one surface of which is in close contact with the inner surface of the yoke, and a plate configured to transmit the magnetic force of the magnet together with the yoke. The method of claim 4, wherein The magnet, A first magnet provided between the yoke and the plate; A second magnet provided on an opposite side of the first magnet with respect to the plate; Exciter including. With yoke; A bobbin provided to the yoke in a linear motion; At least one magnet provided inside the yoke and generating a magnetic field; A voice coil provided on an outer circumferential surface of the bobbin and to which a current is applied; First and second dampers to which the bobbin is linearly supported while maintaining a gap between the yoke and the voice coil, and one end of which is fixed to an outer surface of the bobbin; And A fixing member to which at least one other end of the damper is fixed; Including, And a damper guides the linear motion of the bobbin by an external force generated by the magnetic field of the magnet and the current applied to the voice coil. The method of claim 6, The fixing member, A first fixing member provided at an outer side of the yoke and fixed to the other end of the first damper; A second fixing member provided inside the yoke and having the other end of the second damper fixed thereto; Excitation comprising a. The method of claim 7, wherein The first fixing member is an exciter is a ring provided on the outer surface of the yoke. The method of claim 7, wherein And the second fixing member is a fixed disk provided between the inner surface of the yoke and one surface of the magnet. The method of claim 7, wherein And the second fixing member is a fixed protrusion provided in the yoke. The method of claim 6, The fixing member is provided on the outer surface of the yoke, and includes a ring to which the other end of the first damper is fixed, The other end of the second damper is fixed to the magnet and a plate provided on one side of the magnet corresponding to the opposite side of the yoke. The method of claim 11, The exciter of which the diameter of the magnet is at least less than the diameter of the plate. The method of claim 6, And an interval between an inner surface of the yoke and an outer circumferential surface of the voice coil is 0.1 to 0.3 mm. The method of claim 13, Exciter between the inner surface of the yoke and the outer peripheral surface of the voice coil is preferably 0.3mm. A casing including a front panel; A display module provided inside the casing and reproducing an image; And The exciter according to any one of claims 1 to 14, which is provided in the casing and reproduces sound; Display device comprising a.
KR1020070083422A 2007-08-20 2007-08-20 An exciter and display device comprsing the same KR20090019176A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105050007A (en) * 2015-08-27 2015-11-11 国光电器股份有限公司 High-power thin type speaker
KR20170135673A (en) * 2016-05-30 2017-12-08 엘지디스플레이 주식회사 Display apparatus
KR20180121293A (en) * 2017-04-29 2018-11-07 엘지디스플레이 주식회사 Display apparatus
KR102115387B1 (en) * 2019-06-14 2020-05-26 에스텍 주식회사 The compositive speaker with moving magnetic circuit type
CN111526459A (en) * 2016-03-28 2020-08-11 乐金显示有限公司 Panel vibration type sound display device
KR102169307B1 (en) * 2019-06-14 2020-10-23 부전전자 주식회사 Full range actuator having improved low frequency band characteristics
US11140482B2 (en) 2016-03-28 2021-10-05 Lg Display Co., Ltd. Actuator fixing device and panel vibration type sound-generating display device including the same

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105050007A (en) * 2015-08-27 2015-11-11 国光电器股份有限公司 High-power thin type speaker
US11140482B2 (en) 2016-03-28 2021-10-05 Lg Display Co., Ltd. Actuator fixing device and panel vibration type sound-generating display device including the same
US11950068B2 (en) 2016-03-28 2024-04-02 Lg Display Co., Ltd. Panel vibration type sound generating display device
US11736858B2 (en) 2016-03-28 2023-08-22 Lg Display Co., Ltd. Panel vibration type sound generating display device
CN111526459A (en) * 2016-03-28 2020-08-11 乐金显示有限公司 Panel vibration type sound display device
US11265655B2 (en) 2016-03-28 2022-03-01 Lg Display Co., Ltd Panel vibration type sound generating display device
US11019425B2 (en) 2016-03-28 2021-05-25 Lg Display Co., Ltd. Panel vibration type sound generating display device
CN111526459B (en) * 2016-03-28 2021-08-13 乐金显示有限公司 Panel vibration type sound display device
KR20170135673A (en) * 2016-05-30 2017-12-08 엘지디스플레이 주식회사 Display apparatus
US11012772B2 (en) 2017-04-29 2021-05-18 Lg Display Co., Ltd. Display apparatus
KR20180121293A (en) * 2017-04-29 2018-11-07 엘지디스플레이 주식회사 Display apparatus
KR102169307B1 (en) * 2019-06-14 2020-10-23 부전전자 주식회사 Full range actuator having improved low frequency band characteristics
KR102115387B1 (en) * 2019-06-14 2020-05-26 에스텍 주식회사 The compositive speaker with moving magnetic circuit type

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