JP2002359890A - Display device and electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device and electronic equipment which has high reproduction quality, without impairing space-saving property or portability. SOLUTION: A notebook-sized personal computer 10 is provided with a body 12, a keyboard 14, a display device 16 and a display panel 18. The display panel 18 is of a thin-type using liquid crystal display and plasma display, and the display device 16 is freely openable, with respect to the body 12. Speaker panels 20 are overall flat and are attached slidably, with respect to housing slots 22 provided on the sides 16B of the display device. The speaker panels 20 are housed in the display device 16 when being unused and are pulled out of the housing slots 22 to the both sides 16B of the display device, when sound is reproduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device and an electronic apparatus using the same, and more particularly, to an improvement in a method of mounting a speaker in a display device.

[0002]

2. Description of the Related Art A liquid crystal display (LCD) or a plasma display (PDP) is thinner than a CRT display, and therefore does not require a large installation space or area. Therefore, it is used in various electronic devices such as personal computers, televisions, and DVD players. On the other hand, with the recent spread of multimedia, there is a tendency that a display device is equipped with a speaker, and a demand for sound quality is increasing. 2. Description of the Related Art In conventional electronic devices, there are a type in which external small speakers are arranged on both sides of the device and are connected by an electric machine, and a type in which a small speaker is built in a display device of the electronic device.

[0003]

However, the above background art has the following disadvantages. (1) When externally attaching a speaker to the electronic device,
The loudspeaker loses the space-saving effect due to the thinning of the device body. In particular, in the case of a notebook computer, it is practically difficult to move. (2) Like the notebook computer 300 shown in FIG.
When the speaker 310 is built in the main body 302, a sufficient mounting space for the speaker 310 cannot be secured due to the relationship with other components in the main body 302. For this reason,
A relatively small speaker 310 will be mounted. However, with a small speaker, it is difficult to obtain good reproduction quality over a wide frequency band. In addition, if it is necessary to increase the mounting space for the speaker 310, it is necessary to increase the size of the notebook personal computer 300 itself, and the portability may be impaired.

The present invention has been made in view of the above points, and has as its object to provide a display device and an electronic apparatus having good reproduction quality without impairing space saving and portability. .

[0005]

In order to achieve the above object, the present invention provides a display device having a thin display panel and a speaker panel, wherein the speaker panel can be moved and housed on the display panel side. It is characterized by having done. Another invention is that the speaker panel is provided inside the housing provided with the display panel and on the back side of the display panel, and sound output ports are provided at least on the front left and right sides of the housing. It is characterized by having. The above objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

[0006]

<Embodiment 1> An embodiment of the present invention will be described in detail below. FIG. 1 shows a perspective view of Embodiment 1 of the present invention. In the present embodiment, the present invention is applied to a notebook computer having a thin display.

The notebook computer 10 has a CPU, a memory,
A main body 12 including an HDD, an FDD, and the like, a keyboard 14 provided on the main body 12, and a display device 16 are provided. The display device 16 includes a display panel 18 on the front thereof. The display panel 18 has a thin and planar configuration using, for example, a liquid crystal display or a plasma display, and the display device 16 is freely openable and closable with respect to the main body 12.

In the present embodiment, the speaker panel 20 is provided on the side of the display panel 18 so as to be able to be taken in and out. That is, a storage opening 22 for storing the speaker panel 20 in the display device 16 is provided on the side surface 16B of the display device 16. The speaker panel 20 has a flat shape as a whole, and is set to a size that can be accommodated in the display device 16 from the left and right. And
It is slidably attached to a storage opening 22 provided on the side surface 16B of the display device in a direction indicated by an arrow F1 in FIG. At least one speaker is attached to the speaker panel 20. Of course, a plurality of speakers corresponding to the frequency band may be provided. Also,
A dynamic speaker may be used, but a piezoelectric speaker is preferable from the viewpoint of thinning.

The speaker panel 20 is connected to the notebook computer 1
0 is carried in the display device 16 when the speaker panel 20 is not required, and when the sound is required, the speaker panel 20 is pulled out from the display device 16 to the left and right through the storage opening 22 for use. You. The speaker panel 20 may be housed in the display device 16 or may be slidable on the rear surface 16C side of the display device 16.

As described above, according to the present embodiment, the flat speaker panel 20 is slidably mounted on both side surfaces 16B of the display device 16, so that a speaker larger than a conventional built-in speaker can be provided. And sound quality can be improved. When the speaker panel 20 is not used, the speaker panel 20 is housed inside or on the back of the display device 16, so that the speaker panel 20 is not hindered and is easy to use, and does not impair the space and portability.

<Second Embodiment> Next, a second embodiment of the present invention will be described with reference to FIG. Note that the same reference numerals are used for components corresponding to the above-described embodiments (the same applies to the following embodiments). In the first embodiment described above, the speaker panel 20 is configured to slide left and right from the side surface 16B of the display device 16. However, in the notebook computer 30 of the present embodiment, the speaker panel 20
Is drawn out from the upper surface 16D of the display device 16.

Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIG. In the embodiment described above, the speaker panel 20 is connected to the display panel 18.
Of the display device 16 is pulled out from the side surface 16B or the upper surface 16D of the display device 16 during use.
In the example, the speaker panel 20 is attached to the side surface 16B via the rotation connector 42. The display device 16 is rotatable in a direction indicated by an arrow F3 between a storage state (non-use state) closed on the rear surface 16C side and a use state opened on the front side of the display device 16. I have.

In this embodiment, the speaker panel 20 is folded on the rear surface 16C of the display device 16 when not in use. However, the speaker panel 20 is folded on the front surface 16A of the display device 16 to cover the display panel 18. May be closed. Thus, the display panel 18 can be protected.

<Fourth Embodiment> Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 7A is a perspective view of the fourth embodiment, and FIG. 8B shows a state in which a cross section taken along line # A- # A is viewed in the direction of the arrow. In the above-described embodiment, the speaker panel 20 is used by being spread outside the display device 16 of the display panel 18. However, in the notebook computer 50 of the present embodiment, the speaker panel 20 is stored in the display device 16. Use

The notebook computer 50 has basically the same configuration as the notebook computer 10 described above, and includes a main body 12, a keyboard 14, and a display device 16. As shown in FIG. 2B, a speaker panel 52 is attached to the inside of the display device 16 and on the back surface of the display panel 18 via a support 54. As the speaker panel 52, a plate-shaped speaker panel is used as in the above-described embodiment.

On both sides of the front face 16A of the display device 16, there are provided openings 56 for emitting the sound generated by the speaker panel 52 to the front side of the notebook computer 50. The opening 56 is provided with a porous cover 57. Further, a plurality of holes 58 for sound emission are provided at an arbitrary interval on the rear surface 16C of the display device 16. Holes for the same purpose may be provided on the side surface 16B and the upper surface 16D.

According to the present embodiment, the speaker panel 52
Is output from the opening 56 to the front side of the personal computer, and is also output from the sound emission hole 58 to the rear side of the personal computer. According to the present embodiment, it is possible to provide a speaker having substantially the same size as the display panel 18 in the display device 16 of the display panel 18. Sound quality can be obtained.

<Fifth Embodiment> Next, a fifth embodiment of the present invention will be described with reference to FIG. In the above-described embodiment, the present invention is applied to a notebook computer.
In the present embodiment, the present invention is applied to a television display device.

A television 60 shown in FIG. 1 has a display panel 62 of a liquid crystal or plasma display on a front surface 64A of a display device 64, and is entirely thin. A drawer-type speaker panel 6 is provided in a storage opening 66 provided on a side surface 64B of the display device 64.
8 is attached, and is slidable in the direction of arrow F5a via the storage opening 66.

In use, the speaker panel 68 is slid out of the display device 64 in the direction of arrow F5a together with the connecting portion 68A and then pulled out, and then the speaker panel 68 is opened in the direction of arrow F5b to an appropriate position. Thus, according to the present embodiment, the speaker panel 6 pulled out
8 can be adjusted in angle with respect to the display panel 62, so that the position of the speaker panel 68 can be adjusted to an optimum angle for the viewer 72 of the television 60. Note that a speaker may be provided in the connecting portion 68A.

<Sixth Embodiment> Next, a sixth embodiment of the present invention will be described with reference to FIG. In the present embodiment, the present invention is applied to a liquid crystal panel timepiece.
In the figure, from both sleeves 82 of the liquid crystal panel clock 80,
The speaker panel 20 is drawn out.
Of course, the speaker panel 20 may be attached to the liquid crystal panel clock 80 as in the embodiment of FIGS.

A time signal such as "9:28 am" is output from the speaker panel 20. When the liquid crystal panel clock 80 has a radio, a radio broadcast is output from the speaker panel 20. The liquid crystal panel clock 80 may be of a desk type or a wall type. In particular, since the speaker panel 20 is configured to be moved by the remote controller, it is possible to use the speaker panel 20 according to a situation such as storing the speaker panel 20 when not needed.

<Seventh Embodiment> Next, a seventh embodiment of the present invention will be described with reference to FIGS. This embodiment shows a specific example of a speaker panel when a piezoelectric speaker is used as the speaker, and a mounting example thereof. FIG. 7 is a perspective view illustrating the configuration of the present embodiment, and FIG. 8A is a perspective view illustrating an example of the configuration of the speaker panel. A cross section taken along line # B- # B of FIG. B). FIG. 9 shows a connection structure between the speaker panel and the personal computer.

As shown in FIG. 7, the notebook computer 90 of this embodiment has a main body 1 similar to the first embodiment.
2, a keyboard 14 and a display device 16, and the display device 16 is openable and closable with respect to the main body 12. A storage port 22 for storing the speaker panel 100 in the display device 16 is provided on a side surface 16B of the display device 16, and is slidable in a direction indicated by an arrow F1 in FIG. The speaker panel 100 is attached.

Inside the display device 16, rails 92 for sliding the speaker panel 100 are provided vertically, and the ends of the rails 92 are provided at the maximum extension position and the complete storage position of the speaker panel 100. Is formed. In addition, a magnet 96 is provided vertically at a substantially central portion of the rail 92, whereby a metal frame 104 of the speaker panel 100 described later is maintained in a completely housed state.

As shown in FIG. 8A, the speaker panel 100 is constituted by sandwiching a sheet-shaped piezoelectric sounding body 102 from above and below with a metal frame 104 made of, for example, stainless steel. As shown in FIGS. 7 and 9, the frame 104 is provided with upper and lower grooves 105. That is, at the four corners of the frame 104, the convex portions 106A and 106B protruding in the vertical direction are formed. These convex portions 1
06A, 106B and the protrusion 9 provided on the rail 92.
4, the sliding width of the speaker panel 100 is determined.

For example, when the speaker panel 100 is stored, the outer projection 106B engages with the projection 94 of the rail 92, and the vicinity of the inner projection 106A is fixed at that position by the magnet 96. On the other hand, the speaker panel 100 can be pulled out until the inner convex portion 106 </ b> A comes into contact with the convex portion 94 of the rail 92. That is, the engagement between the convex portions 106A and the convex portions 94 can prevent the speaker panel 100 from falling off from the display device 16.

A drawer 98 having a substantially half-moon-shaped groove is provided below the front surface of the storage opening 22. On the speaker panel 100 side, a claw is provided at a position corresponding to the drawer 98. Groove 107 is formed for applying the pressure. The user of the notebook computer 90 puts the nail into the groove 107 and pulls out the speaker panel 100 from the drawer 98.

Next, the piezoelectric sounding body 102 will be described. As shown in the cross section in FIG.
Is a disk-shaped shim plate 1 made of metal or the like.
08 has a bimorph structure in which piezoelectric elements 110 and 116 are bonded to each other with a conductive adhesive or the like on the front and back sides substantially at the center, and the piezoelectric elements 110 and 116 have a laminated structure. The front and back surfaces are entirely covered with insulating flexible sheets or films (hereinafter, simply referred to as “flexible sheets”) 130 and 140 in which a conductive pattern is formed in advance with a conductive material.

As the flexible sheets 130 and 140,
For example, a PET film or the like is used, and as the conductor pattern, for example, a copper foil or the like is used. The conductor pattern is
A copper foil or the like having a predetermined shape may be attached to the flexible sheets 130 and 140 with an adhesive, or a carbon paste or a conductive paste may be directly formed by a method such as screen printing or vapor deposition. Good.

First, the piezoelectric element 110 will be described. The piezoelectric element 110 includes piezoelectric layers 114A and 114B,
It has a structure in which electrode layers 112A to 112C are alternately stacked. Through holes 112E and 112F are formed at corresponding locations in the piezoelectric layers 114A and 114B. The electrode layer 11 located inside is formed by the through hole 112E.
2B is pulled out to the upper surface side and connected to the connection land 112D. The electrode layers 112A and 112C which are alternately located are connected by the through holes 112F.
As the piezoelectric layers 114A and 114B, for example, PZT is used, and as the electrode layers, for example, Ag or Ag / P
d alloy or the like is used.

The same applies to the piezoelectric element 116 and the electrode layer 11
8A to 118C and piezoelectric layers 120A and 120B. The piezoelectric layers 120A and 120B have
Through holes 118E and 118F are formed at corresponding locations. The electrode layer 118B located inside is pulled out to the lower surface side by the through hole 118E, and the connection land 1
18D. Further, the electrode layers 118A and 118C which are alternately located are connected by the through hole 118F.

The piezoelectric sounding body 102 having such a structure is provided with a flexible sheet 13 in which a conductor pattern is previously formed at a predetermined position.
0 and 140 cover the whole. Conductor pattern 1
36A and 136C are connection lands 112D and 118D of the piezoelectric elements 110 and 116, as shown in FIG.
Is set to a length that reaches a receiving portion 142 protruding from the side of the frame 104 of the speaker panel 100.
The receiving portion 142 is formed of an insulating sheet or the like. Further, the conductor pattern 136B is provided on the shim plate 108.
The length is set so as to reach an appropriate position of the receiving portion 142 from an appropriate position on the surface. Note that these conductor patterns 13
6A to 136C are conductive resin pads 134A to 136C.
C, connection lands 112D, 118D, shim plate 10
8 is connected. Conductive resin pads 134A-13
As 4C, for example, a conductive resin coated film or a conductive adhesive is used.

On the other hand, on the side from which the conductor patterns 136A to 136C are drawn, insulating sheets 138A to 138A are provided, respectively.
8C is attached with an adhesive or the like. Insulating sheet 13
8A and 138C are the conductor patterns 136A and 136C.
This prevents electrical contact between the C.C. 36C and the shim plate 108, and is provided only in necessary parts. Therefore, at positions where the shim plate 108 does not contact the conductor patterns 136A and 136C, these conductor patterns 136A and 136C
It becomes one as if it was stuck on the front and back. The insulating sheet 138B does not need to be provided because it is not necessary to prevent the conductive pattern 136B from contacting the shim plate 108.

The electrode layers 112A, 112C, 118A, 1
18C is a through hole 112F, 118F, shim plate 1
08 all have the same potential, and the flexible sheet 1
30 are drawn out from one place via a conductive resin pad 134B and a conductor pattern 136B. Further, regarding the electrode layer 112B, the conductive resin pad 134A, the conductor pattern 136A
The electrode layer 118B is drawn out from the connection land 118D through the conductive pads 134C and 134C.
It is drawn out through the conductor pattern 136C.

Next, referring to FIG. 9, a speaker panel 100 configured as described above and a connection portion 148 for supplying a driving voltage to the speaker panel 100 from the notebook personal computer 90 side.
Will be described. As shown in FIG.
The conductor patterns 136A (or 136C) and 136B for leading out the two electrodes are led out to the outside by receiving parts 142 projecting from the sides of the frame 104. Lead wires 150 and 152 are connected to these conductor patterns 136A and 136B, respectively, and the lead wires 150 and 152 are connected to the notebook computer 90 via a hole 146 provided inside the display device 16 (not shown). Connected to signal terminal.

Holes 146 in the leads 150 and 152
The side is housed in the tube 168 together with the piano wire 154, and the side connected to the conductor patterns 136 A, 136 B is housed in the tube 168 together with the piano wire 162. As the tube 168, for example, a heat-shrinkable vinyl tube is used. The piano wire 15
4, 162 and the tube 168 are divided, and the lead wires 150, 152 can be folded back at the divided portion. That is, the piano wires 154 and 16
The tube 2 and the tube 168 prevent the lead wires 150 and 152 from being bent except where they are needed.

The end 156 of the piano wire 154
158 are bent along the inner surface of the display device rear surface 16C. Similarly, one end 164 of the piano wire 162 is also bent. In this manner, by folding the ends of the piano wires 154 and 162 along the inner surface of the display device 16, even if the lead wires 150 and 152 try to rotate as the speaker panel 100 slides, this is prevented. Thereby, the lead wire 150,
The twist of 152 is prevented. Furthermore, an end 166 of the piano wire 162 on the frame 104 side is hooked on a fixing portion 144 provided on the side of the frame 104. For this reason, even if the connection portion 148 is pulled, the force acts on the piano wire 162 and does not act on the connection portion between the lead wires 150 and 152 and the conductor patterns 136A and 136B.

In addition, the connection side of the lead wires 150 and 152 with the conductor patterns 136A and 136B is set longer than the piano wire 162 as shown in the drawing, that is, the lead wires 150 and 152 are provided with extra length. Thus, the force applied to the lead wires 150 and 152 is reduced, and the lead wires 150 and 152 are hardly cut. A tube similar to the tube 168 may be provided in the extra length to protect the lead wires 150 and 152, or the conductor pattern 1 exposed on the receiving portion 42 may be provided.
36A and 136B may be covered and protected by an insulating sheet.

The connecting portion 148 having the above structure expands and contracts in an accordion manner as shown in the drawing by appropriately folding the position. That is, as shown in FIG. 7, when the speaker panel 100 is stored, the speaker panel 100 is folded and stored in the gap between the left and right speaker panels 100, and expands when the speaker panel 100 is pulled out.
Then, the connection portion 148 and the conductor patterns 136A to 136
C, a drive voltage is applied to the electrodes of the piezoelectric sounding body 102 via the conductive resin pads 134A to 134C.

Since the connection section 148 is provided independently of the left and right speaker panels 100, one of the left and right speakers can be pulled out and used. Further, in the present embodiment, the left and right connection portions 148 are configured such that the lead wire has one curved point, but more curved points may be provided, and the length between the curved points may be provided. This may also be set appropriately. However, from the viewpoint of reducing the movement of the entire connecting portion 148, it is convenient to set the number of the curved points to be small and the interval between the curved points to be long.

As described above, according to this embodiment, the piezoelectric sounding body 102 including the laminated piezoelectric elements 110 and 116 is used, and the conductor patterns 136A to 136C formed on the piezoelectric sounding body 102 are used. Pull out the electrode. Further, the extracted electrodes are connected to the speaker panel 1.
It is connected to the personal computer side by a connecting portion 148 that expands and contracts substantially on the same plane as 00. Therefore, the driving voltage is low, and the whole can be configured to be thin.

<Embodiment 8> Next, FIG. 10 and FIG.
Embodiment 8 of the present invention will be described with reference to FIG. This embodiment is also an example in which a piezoelectric speaker is used similarly to the seventh embodiment (the same applies to the following embodiments). FIG. 10A is a perspective view showing a main configuration of the present embodiment, and FIG. 10B shows a state in which a cross section cut along line # C- # C is seen in the direction of the arrow. ing. FIG. 11A is a diagram illustrating a configuration of a speaker panel according to the present embodiment, and FIG. 11B is a diagram illustrating a configuration of a drawer of a piezoelectric sounding body.

As shown in FIG. 10, in the notebook computer 200 according to the present embodiment, the speaker panel can be pulled out from the storage openings 22 provided on the left and right side surfaces 16B of the display device 16 as in the seventh embodiment. The rails 92 and the magnets 96 provided in the display device 16 are:
This is the same as Embodiment 7 described above. The frame structure of the speaker panel 202 is basically the same as that of the above-described seventh embodiment, but the electrode drawing structure of the piezoelectric sounding body sandwiched between the frames is different.

The speaker panel 202 includes the piezoelectric sounding body 20.
4 is sandwiched between the frames 206.
Above and below the groove 207, 209 and the protrusion 20 respectively.
8, 210 are formed. Here, the lower groove 209
Is formed deeper than the upper groove 207, and the groove 2
From 09, the drawer 212 of the piezoelectric sounding body 204 is exposed.

The configuration of the piezoelectric sounding body 204 is basically the same as that of the piezoelectric sounding body 102 of the above-described seventh embodiment, and laminated piezoelectric elements 110 and 116 are attached to the front and back of the shim plate 108, respectively. Are covered with the flexible sheets 130 and 140. The same applies to the extraction of the electrode layers constituting these piezoelectric elements 110 and 116.
36A (or 136C) and 136B, but in the present embodiment, it is provided inside the housing of the display device 16 on the front and back of the lead-out part 212 which is the lead-out side of the conductor patterns 136A and 136B. Contact conductor patterns 214 and 216 for making electrical contact with the contact 222 are formed. That is, the contact conductor pattern 21 is placed on the flexible sheet 130 on the front surface side of the lead portion 212.
4 are formed, and the contact conductor pattern 216 is formed on the flexible sheet 140.

As shown in FIG. 11B, the piezoelectric sounding body 2
A through hole 218 is formed at an appropriate position in the flexible sheet 140 covering one surface of the conductive sheet 04, so that the conductor pattern 136A and the contact conductor pattern 216 are in contact with each other.
Similarly, a through hole 220 is formed at an appropriate position in the flexible sheet 130, and the conductor pattern 136B and the contact conductor pattern 214 are in contact with each other. That is, the electrodes of the piezoelectric elements 110 and 116 are drawn out through the contact conductor patterns 214 and 216. The contact conductor patterns 214 and 216 are formed on the flexible sheets 130 and 140 in the same manner as the conductor patterns 136A to 136C.

The speaker panel 202 having the above configuration
Can be stored in the display device 16 as shown in FIG. Below the inside of the display device 16, as shown in the cross section in FIG.
2 are provided. The contact 222 is connected to the display device 16.
Spring 224 and ball 22 embedded in the housing
The spring 224 is connected to a signal terminal (not shown) of the notebook computer 200. The ball 226 is mounted on the speaker panel 20.
2 contacts the contact conductor patterns 214 and 216 formed on the front and back surfaces of the piezoelectric sounding body 20.
4 is supplied.

As described above, according to the present embodiment, the contact layer 222 provided on the inside of the display device 16 is brought into contact with the contact conductor patterns 214 and 216 formed on the surface of the speaker panel 202, thereby forming the electrode layer. Since the signal voltage is applied to the display device 16, the connection structure can be simplified without providing another connection wiring or the like in the display device 16. Also, the contact conductor patterns 214 and 2
By forming the speaker panel 16 in the same range as the slidable width of the speaker panel 202, it is possible to output audio regardless of the degree to which the speaker panel 202 is pulled out, as in the seventh embodiment. Here, the contact 222 on the display device 16 side is provided in the vicinity of the storage opening 22, but another contact is provided further inside, that is, by providing a plurality of contacts in parallel, a connection failure is caused. May be prevented.

Ninth Embodiment Next, a ninth embodiment of the present invention will be described with reference to FIG. Embodiment 8 described above outputs audio regardless of the degree to which the speaker panel is pulled out, but this embodiment enables audio output only when the speaker panel is pulled out to a certain position. It is an example.

First, the notebook personal computer 230 shown in FIG. 12A has the same basic structure as that of the eighth embodiment, but the contact conductor pattern 236 is formed only on a part of the inside of the drawer 234. Have been. For this reason, sound can be output when the speaker panel 232 is pulled out to a position where the contact 222 provided in the display device 16 contacts the contact conductor pattern 236, that is, the position PD shown in the drawing.

FIG. 12B shows another example of the present embodiment. In the notebook computer 240 of this example, the speaker panel 242 can be stored from the storage port 22 of the display device 16 by the rotation about the rotation support 246 as a fulcrum. Also in the case of this example, the contact conductor pattern 248 is provided only on a part of the inside of the drawer portion 244 of the speaker panel 242.
Are formed. In addition, a contact 2 that is in contact with the contact conductor pattern 248 is located at an intermediate position inside the storage port 22.
50 are formed. Therefore, sound is output only when the speaker panel 242 is pulled out to the position indicated by the position PE in the figure.

As described above, according to the present embodiment, by adjusting the position and size of the contact conductor pattern provided on the speaker panel and the position of the contact for making electrical contact therewith, ON / OFF of the audio output can be switched in accordance with the degree of pull-out.

The present invention has many embodiments, and various modifications can be made based on the above disclosure. For example, the following is also included. (1) In the above-described embodiment, the present invention is applied to a notebook computer or a television.
The present invention can be applied to various electronic devices including a display device, such as a DVD player.

(2) The size, design, etc. of the notebook personal computer and the television in the above embodiment are merely examples.
It can be changed as needed.

(3) In the above embodiment, a piezoelectric speaker is mainly used as a speaker, but a dynamic speaker may be used. Further, a plurality of speakers may be provided in one speaker panel. For example, a dynamic speaker is mounted for a low frequency range, and a piezoelectric speaker is mounted for a high frequency range. Speakers may be provided on the front and back of the speaker panel, and the shape of the speaker panel may be appropriately changed as necessary.

(4) In the above embodiment, the bimorph type piezoelectric sounding body is used, but a unimorph type piezoelectric sounding body may be used. The piezoelectric element may have a single-layer structure having only one piezoelectric layer. In the case of a stacked type, the number of stacked piezoelectric layers and electrode layers may be changed as appropriate. Also,
The material, shape, and dimensions of the piezoelectric element, the connection pattern of the internal electrodes, and the lead-out structure of the electrodes are also examples, and can be appropriately changed so as to achieve the same operation. Further, in the above embodiment, the conductive pattern and the electrode layer are connected via the conductive resin pad. However, if the conductive pattern and the electrode layer are electrically connected, the conductive resin pad is not necessarily required. is not.

(5) The connection structure between the speaker panel and the external signal terminals in the above embodiment is also an example, and can be appropriately changed so as to obtain the same effect. For example, in the eighth embodiment, the contact 222 is constituted by the ball 226 and the spring 224. However, as long as the contact 222 can be electrically contacted with the contact conductor patterns 214 and 216, the shape and the structure are appropriately changed. May do it. For example, FIG.
As shown in (C), a leaf spring-shaped contact 228 is provided at an appropriate position inside the display device 16. In addition, a planar contact may be provided inside the display device 16 and a drawer protrusion for contacting the contact may be provided on the speaker panel side. Further, an uneven portion or the like may be formed at an appropriate position between the speaker panel and the display device, and electrical connection may be achieved by fitting these.

(6) The number of channels for sound reproduction is also normally in left and right two channels, but is not limited to this. For example, speakers may be provided on the front and back of the speaker panel to provide four channels.

[0060]

As described above, according to the present invention,
The following effects are obtained. (1) Since the speaker panel is housed in the display panel when not in use, sound reproduction with good quality is achieved without impairing the space saving or portability of the display device and the electronic device using the same. It can be performed. (2) Since a piezoelectric speaker is used as the speaker, the speaker area can be increased without hindering the thinning and miniaturization of the display device and the electronic device. (3) Since a laminated piezoelectric element is used as the piezoelectric speaker, the driving voltage can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing Embodiment 2 of the present invention.

FIG. 3 is a perspective view showing a third embodiment of the present invention.

4A and 4B are diagrams showing Embodiment 4 of the present invention, wherein FIG. 4A is a perspective view, and FIG. 4B is a partially enlarged view of a cross section taken along line # A- # A of FIG.

FIG. 5 is a perspective view showing Embodiment 5 of the present invention.

FIG. 6 is a perspective view showing Embodiment 6 of the present invention.

FIG. 7 is a perspective view showing Embodiment 7 of the present invention.

FIG. 8 is a diagram showing a structure of the piezoelectric speaker of the above embodiment.

FIG. 9 is a diagram showing a connection structure between the piezoelectric speaker of the above embodiment and a housing.

FIG. 10 is a diagram showing an eighth embodiment of the present invention, in which (A)
Is a perspective view, (B) is a cross-sectional view along line # C- # C of (A), and (C) is a view showing another example of the present embodiment.

FIG. 11 is a view showing an electrode lead-out structure of the piezoelectric speaker according to the embodiment.

FIG. 12 is a diagram showing a ninth embodiment of the present invention.

FIG. 13 is a perspective view showing an example of a conventional notebook computer.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Laptop personal computer 12 ... Main body 14 ... Keyboard 16 ... Display device 16A ... Front 16B ... Side 16C ... Back 16D ... Top 18 ... Display panel 20 ... Speaker panel 22 ... Storage port 30 ... Laptop personal computer 32 ... Rotation support 40 ... Notebook computer 42 ... Rotating connector 50 ... Notebook computer 52 ... Speaker panel 54 ... Support body 56 ... Opening 57 ... Cover 58 ... Sound emission hole 60 ... Television 62 ... Display panel 64 ... Display device 64A ... Front 64B ... Side 66 ... storage opening 68 ... speaker panel 68A ... connecting part 70 ... rotating connector 72 ... viewer 80 ... liquid crystal panel clock 82 ... both sleeves 90 ... notebook computer 92 ... rail 94 ... convex part 96 ... magnet 98 ... drawer part 100 ... Speaker panel 102 ... Piezoelectric sound generator 104 ... Frame 105 ... Groove 106A, 106 ... Projecting portions 107. Grooves 108. Shim plates 110 and 116. Piezoelectric elements 112A to 112C and 118A to 118C .. Electrode layers 112D and 118D. Piezoelectric layers 130, 140 Flexible sheets 134A to 134C Conductive resin pads 136A to 136C Conductive patterns 138A to 138C Insulating sheet 142 Receptor 144 Fixed part 146 Hole 148 Connection part 150, 152 Lead Wires 154, 162 ... Piano wires 156, 158, 164, 166 ... Ends 168 ... Tube 200 ... Laptop computer 202 ... Speaker panel 204 ... Piezoelectric sound generator 206 ... Frames 207, 209 ... Grooves 208, 210 ... Protrusions 212 ... Part 214, 2 6 Contact conductor pattern 218, 220 ... Through hole 222 ... Contact 224 ... Spring 226 ... Ball 228 ... Contact 230 ... Notebook PC 232 ... Speaker panel 234 ... Pull-out portion 236 ... Contact conductor pattern 240 ... Notebook PC 242 ... Speaker panel 244 ... Pull out part 246 ... Rotating support 248 ... Contact conductor pattern 250 ... Contact 300 ... Note PC 302 ... Main body 304 ... Keyboard 306 ... Display device 308 ... Display panel 310 ... Speaker

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hisashi Matsui 6-16-20 Ueno, Taito-ku, Tokyo Taiyo Electric Power Co., Inc. (72) Inventor Hiroshi Kishi 6-16-20 Ueno, Taito-ku, Tokyo Taiyo F-term (for reference) in Denki Co., Ltd. 5D017 AE22

Claims (12)

[Claims] 1. A display device comprising a thin display panel and a speaker panel, wherein the speaker panel is moved so as to be housed in the display panel side. 2. The piezoelectric speaker according to claim 2, wherein the speaker panel includes a piezoelectric element including a piezoelectric element in which an electrode layer is laminated on a piezoelectric layer.
2. The display device according to claim 1, further comprising a piezoelectric speaker including a drawing unit for drawing out the electrode layer to the outside, and a flexible sheet covering the piezoelectric sounding body and the drawing unit. 3. The display device according to claim 2, wherein the piezoelectric element has a laminated structure in which a plurality of the piezoelectric layers and the electrode layers are alternately laminated. 4. The display device according to claim 2, wherein the speaker panel is movable along the display panel inside a housing provided with the display panel. 5. The piezoelectric speaker according to claim 2, wherein the connecting means for connecting the drawing means of the piezoelectric speaker to the outside expands and contracts on substantially the same plane as the speaker panel. Display device. 6. The display device according to claim 5, further comprising means for reinforcing said connecting means and preventing twisting of said connecting means. 7. The drawing means is formed by a conductor pattern provided on the surface of the flexible sheet, and the connection means for contacting the conductor pattern of the drawing means is provided on the side of the housing provided with the display panel. The display device according to any one of claims 2 to 4, wherein the display device is provided in a display device. 8. The display device according to claim 7, wherein the draw-out unit and the connection unit come into contact with each other in a state where the speaker panel is pulled out of a housing of the display panel. 9. The display device according to claim 2, further comprising means for restricting a moving range of the speaker panel in the housing. 10. The display device according to claim 2, further comprising means for maintaining a state in which the speaker panel is housed in the housing. 11. A display device comprising a thin display panel and a speaker panel, wherein the speaker panel is provided inside a housing provided with the display panel and on a back side of the display panel. A display device, wherein sound output ports are provided at least on the front left and right sides of the housing. 12. An electronic apparatus using the display device according to claim 1. Description: