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JP2004282428

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2004282428
[PROBLEMS] To be able to emit sound at a sufficient volume from the front surface of a case. A
display unit 3a provided inside a first case unit 3 is used as a sound generation unit 3b. That is, a
vibrator is provided in the display unit 3a, and a sound signal is supplied to the vibrator so that
the display unit 3a is also used as a speaker with a large aperture. [Selected figure] Figure 1
Mobile phone
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
portable telephone provided with a large sound generating unit. [0002] Among conventional
portable telephones, there are known portable telephones provided with an integral case, and a
case in which a first case portion and a second case portion are foldable. In such a mobile phone,
a display unit and a plurality of operators are provided on the front surface, an earpiece is
provided on the display unit, and a mouthpiece is provided under the plurality of operators. ing.
As described above, since there is no space for providing a large diameter speaker on the front
surface, a large diameter speaker is provided on the back of the case. In the conventional mobile
phone, when a call is received or a mail is received, the large-diameter speaker provided on the
back of the case is used to generate an incoming call based on the ring tone or ring tone. Is
notified to the user. [0003] In the conventional mobile phone, a speaker with a large aperture is
provided on the back of the case, and the sound is emitted from the back, so the user can not
hear the emitted sound. There was a problem that it was difficult to hear. Although a speaker is
provided inside the earpiece provided on the front surface of the case, it can not produce a
volume that can be notified to the user because the aperture is small. Therefore, an object of the
present invention is to provide a mobile phone capable of emitting sound with a sufficient
volume from the front surface of a case. In order to achieve the above object, a mobile phone
according to the present invention is provided with at least a flat display and a plurality of
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operation switches on one side, and a mobile phone A cellular phone including a case having a
built-in functional circuit, wherein the flat display is provided with a vibrator, and the flat display
is driven by the vibrator so that the flat display is formed. The indicator of is intended to act as a
sound generator. Another mobile phone of the present invention, which can achieve the above
object, is provided with a flat display portion on the front surface, which is a facing surface when
the case is folded. A first case section provided with an earpiece or mouthpiece, and an operation
section consisting of a plurality of switch buttons on the front surface, which is a surface facing
when the case is folded, is provided on the back surface A second case portion provided with a
mouthpiece or a receiver, a hinge portion rotatably supporting end portions of the first case
portion and the second case portion, and the flat display And a vibrator for driving the flat
display, and the flat display is made to act as a sound generation unit by driving the flat display
by the vibrator.
Furthermore, in the mobile phone according to the present invention, the rotatable range of the
hinge may be set such that the second case can rotate about 180 ° or more with respect to the
first case. According to such an embodiment of the present invention, the flat display is driven by
the vibrator to form the sound producing unit. Therefore, since the flat display can be used also
as a speaker with a large aperture, it is possible to emit a ring tone, ringing melody, etc. at a large
volume from the front surface of the case. In addition, by providing a mouthpiece or earpiece on
the back of the case, the area of the flat display can be increased, so that it can be operated as a
speaker with a larger aperture and a large display You will be able to Further, since the earpiece
or the mouthpiece is provided on the back of the case, the case can be miniaturized even if the
flat display used also as a speaker with a large aperture is enlarged. DETAILED DESCRIPTION OF
THE PREFERRED EMBODIMENT FIG. 1 is a perspective view showing the configuration of the
front side of a portable telephone according to an embodiment of the present invention, and the
configuration of the back of the portable telephone according to an embodiment of the present
invention is shown. The perspective view which shows is shown in FIG. As shown in these figures,
the mobile phone 1 of the present invention is provided with a first case 3 and a second case 2.
The end portions of the first case portion 3 and the second case portion 2 are rotatably fixed via
the hinge portion 4 so that the first case portion 3 and the second case portion 2 can be folded. It
is assumed. The mobile phone 1 shown in FIG. 1 is in a state where the first case portion 3 is
opened with respect to the second case portion 2 at an angle θ1, and the mobile phone 1 shown
in FIG. The first case portion 3 is opened with respect to the portion 2 so as to have an angle θ2
larger than the angle θ1. A plurality of switch buttons 2a such as a dial button which is an
operating element and a menu selection button are provided on the front surface which is a
surface facing when the second case portion 2 is folded, and the back surface thereof is provided
A mouthpiece 2b in which a microphone is built in is provided at the bottom. In addition, various
information and texts can be displayed on the front surface, which is a surface facing when the
first case portion 3 is folded, such as a liquid crystal display or the like, which has a planar shape
that occupies the entire surface. The display unit 3a is provided, and the display unit 3a doubles
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as the sound generation unit 3b. In addition, on the back surface of the first case portion 3, a
socket 3c in which a speaker with a small aperture is built in is provided at the top.
The hinge portion 4 can hold the state with a click feeling when the first case portion 3 and the
second case portion 2 are set to the angle θ1, and the first case portion 3 and the first case
portion When the two case parts 2 are opened so as to have an angle θ2, the state can be held.
The angle θ1 is an angle suitable for operating the switch button 2a at the time of making or
receiving a call, and is suitable for operating the switch button 2a at the time of operation of
receiving or transmitting mail and network connection operation such as the Internet. It is
considered as an angle. For example, the angle θ1 is about 150 °. In the display portion 3a,
since the flat display portion 3a which is sized to occupy almost the entire surface of the front
surface of the first case portion 3 is the sound producing portion 3b, the sound producing
portion 3b has a large diameter. To act as a speaker of As a result, the ring tone and the ring tone
can be generated from the sound generator 3b at a sufficient volume. Further, since the display
unit 3a is large, a long mail can be displayed at one time, and when an image is attached to the
mail, the image can be displayed on the display unit 3a in a large size. Become. Furthermore, as
shown in FIG. 2, when the first case portion 3 is opened to the angle θ 2 with respect to the
second case portion 2, the earpiece 3 c provided on the back surface of the first case portion 3 is
used. Since it can be put on the ear and the mouthpiece 2b provided on the back of the second
case 2 can be put on the mouth, it becomes possible to make a call by turning the mobile phone
1 over. The angle θ2 is set to, for example, about 210 °, but may be set to about 180 °
because it may be set to an angle at which a call can be made. As described above, in the mobile
phone 1 according to the present invention, the large-diameter speaker conventionally provided
on the back surface is also used as the display unit 3 a provided on the front surface. A ringer
tone, a melody tone, and a background sound and a tone reproduced by the mobile phone 1 can
be emitted from the front of the mobile phone 1 at a sufficient volume from the sound generator
3 b shared by the display 3 a. . As a result, it is possible to prevent the incoming notification from
being missed and to listen to the musical tone with good quality. Further, since the earpiece 3 c,
which has been conventionally provided on the front surface, is provided on the back surface of
the first case portion 3, the size which occupies almost the entire surface of the front surface of
the first case portion 3 Can be provided.
As a result, it is possible to further increase the diameter of the sound producing unit 3 b shared
by the display unit 3 a. Then, in the mobile phone 1 according to the present invention, when
making a call, the mobile phone 1 is turned over and the earpiece 3 c provided on the back of the
first case 3 and the back of the second case 2 are provided. Use the mouthpiece 2b. From this,
the first case portion 3 can be rotated about 180 ° or more with respect to the second case
portion 2. Next, a configuration example of the display unit 3a in the mobile phone 1 according
to the present invention is shown in FIG. 3 and FIG. However, FIG. 3 is a cross-sectional view
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showing the configuration of the display unit 3a, and FIG. 4 is a perspective view showing the
configuration of the display unit 3a. As shown in FIGS. 3 and 4, the display unit 3a is a liquid
crystal display, and the lower side shown in the drawing is a display surface. The displayed image
or the like can be visually observed through the transparent glass substrate 12 on the outer
surface of which the polarizing filter 11 is provided. On the inner surface side of the glass
substrate 12, R, G, B color filters 13 and a transparent electrode 14 for display control are
provided. Then, the liquid crystal 16 is disposed between the two alignment films 15 and 17 in
which the alignment direction is changed by 90 ° inside the transparent electrode 14. A
transparent electrode 18 is provided on the outside of the alignment film 17, and a desired image
or the like is formed by controlling the alignment of liquid crystal molecules in the liquid crystal
16 for each pixel of R, G, B by the transparent electrode 14 and the transparent electrode 18. To
be able to display. A transparent glass substrate 19 provided with a polarizing filter 20 on the
outer surface is provided outside the transparent electrode 18, and a back of this glass substrate
19 is separated from the display portion 3 a. A light 40 is provided. The transmission of light
emitted by the backlight 40 is controlled by the liquid crystal 16 so that a desired full-color
image or the like can be viewed through the glass substrate 12. In addition, a vibrator 30 is
provided at an end portion of the glass substrate 12 to make the glass substrate 12 a sound
producing unit 3 b in the speaker. By applying the amplified sound signal to the vibrator 30, at
least the glass substrate 12 vibrates, and the sound signal is generated from the sound
generating unit 3b which is also used by the display unit 3a. In this case, since the size of the
glass substrate 12 constituting the display unit 3a is increased, the diameter of the sound
generation unit 3b is increased, and a loud and powerful sound can be emitted. become.
Next, the configuration of the hinge portion 4 in the mobile phone 1 according to the present
invention is shown in FIG. 5 and FIG. As shown in FIG. 5, the hinge portion 4 is divided into two
on both sides of the end portion of the second case portion 2 and is formed substantially at the
center of the end portion of the first case portion 3 and the first holding portion 4 a formed
integrally. It is comprised from the 2nd holding ¦ maintenance part 4b currently formed
integrally. The second holding portion 4b is inserted between the first holding portion 4a divided
into two, and an axial center 4c is formed in a through hole (not shown) formed in the first
holding portion 4a and the second holding portion 4b. It is fixed so as not to be inserted and slip
out. As a result, the first case portion 3 is rotatably held relative to the second case portion 2
with the shaft center 4c as the rotation axis, and the rotation range thereof is preferably about
180 ° or more as shown in FIG. The angle θ2 can be about 210 °. Although an internal
antenna is built in the first case portion 3, a retractable whip antenna may be provided in the
first case portion 3 or the second case portion 2. When the first case 3 is opened by 180 degrees
or more with respect to the second case 2 to make a call, the switch button 2a may be
erroneously pressed when the second case 2 is gripped, In order to prevent the malfunction, it is
preferable to lock the plurality of switch buttons 2a and block the input from the plurality of
switch buttons 2a when opening up to the angle θ2. As described above, in the portable
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telephone according to the present invention, the flat display is driven by the vibrator to form the
sound producing unit. Therefore, since the flat display can be used also as a speaker with a large
aperture, it is possible to emit a ring tone, ringing melody, etc. at a large volume from the front
surface of the case. In addition, by providing a mouthpiece or earpiece on the back of the case,
the area of the flat display can be increased, so that it can be operated as a speaker with a larger
aperture and a large display You will be able to Further, since the earpiece or the mouthpiece is
provided on the back of the case, the case can be miniaturized even if the flat display used also as
a speaker with a large aperture is enlarged. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a
perspective view showing the configuration of the front side of a mobile phone according to an
embodiment of the present invention. FIG. 2 is a perspective view showing the configuration of
the back side of the mobile phone according to the embodiment of the present invention.
FIG. 3 is a cross-sectional view showing a configuration example of a display unit of the mobile
phone according to the embodiment of the present invention. FIG. 4 is a perspective view
showing a configuration example of a display unit of the mobile phone according to the
embodiment of the present invention. FIG. 5 is a side view showing the configuration of the hinge
of the mobile phone according to the embodiment of the present invention. FIG. 6 is a front view
showing the configuration of the hinge portion of the mobile phone according to the embodiment
of the present invention. [Description of the code] 1 mobile phone, 2 second case unit, 2a switch
button, 2b mouthpiece, 3 first case unit, 3a display unit, 3b sounding unit, 3c earpiece, 4 hinge
unit, 4a first holding Part, 4b second holding part, 4c axis, 11 polarization filters, 12 glass
substrates, 13 color filters, 14 transparent electrodes, 15 alignment films, 16 liquid crystals, 17
alignment films, 18 transparent electrodes, 19 glass substrates, 20 polarization filters , 30
transducers, 40 backlight
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