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JPS56144700

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Notice
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 JPS56144700
The name display device 1 of the present invention, provided on the front of the display panel of
the display device K, the peripheral edge is attached to the case of the display device A
transparent cover is attached to the transparent cover to make the transparent piezoelectric
element A display device using a transparent cover as a vibrating body by affixing, wherein the
piezoelectric element is attached to a recessed bottom surface provided in a central portion of an
inner surface of the transparent cover.
Claims
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display device
using a transparent cover made of a transparent body provided on the front surface of a display
panel of a display device as a sound generator. Conventionally, in an S- (with buzzer) watch with
alarm function, a diaphragm is attached to the back cover of the back of the case and sound is
generated by vibrating the diaphragm, and a sound extraction hole provided in the back cover
However, in the case of a watch with this structure, the sound propagation source is covered with
the case and back cover by the case and back cover, and the sound propagating to the outside is
attenuated and reduced, or the diaphragm As a result, the watch has a problem that the thickness
of the watch becomes thick. Therefore, recently, as shown in FIG. A transparent cover 5 provided
on the front face of the display panel 1 of the main unit 4 incorporating the drive source 22
clock drive unit 3 etc. is vibrated directly. A watch having the cover 5 as a sound generator by K
is proposed. In order to vibrate the cover 5, as shown also in FIG. 2, K is a transparent
piezoelectric in which transparent vapor deposition electrodes 8.degree. 9 are provided on both
surfaces on the inner surface of the cover 5 coated with the transparent vapor deposition
electrodes 6 via the transparent adhesive 7. A ceramic plate 10 is attached, and a contact
(contact) 11 in contact with the transparent vapor deposition electrode 6 of the cover 5 and a
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contact (contact) 12t in contact with the exposed transparent vapor deposition electrode 1i9 of
the transparent piezoelectric ceramic plate 10 -The transparent piezoelectric ceramic plate 104C
is applied and vibrated to vibrate the integrated cover 5 to generate a sound. In addition, the
cover 5 is covered with the main body 4 and is coupled while using a cushioning end page: 113
as a pedestal. By the way, in order to reduce the thickness of the watch, recently, the thickness
reduction of the cover 5 is also considered. And, the thickness of the cover 5 is about to reach
0.5-06 pieces. On the other hand, the piezoelectric element provided with the transparent vapor
deposition electrodes 8.9 on both sides of the transparent piezoelectric ceramic plate 10
becomes 0.2 to 0.3, including the transparent adhesive of the pasting 9 of the same On the other
hand, the cover 5 has a supporting structure via the packing to the main body 4 so that the
peripheral portion thereof has a predetermined mechanical strength, so there is a limit to
thinning K, or The central portion of the glass carver 5 is considered to have no problem even if
it is thinner if no large external force is applied from the outside. Therefore, the present inventor
is aware that the present invention can achieve the thickness reduction of the watch by making
the inner surface central portion of the cover 5 completely write and putting the piezoelectric
element in this recessed portion.
Therefore, an object of the present invention is to reduce the thickness of a display device such
as a watch. In order to achieve such an object, the present invention provides a piezoelectric
element provided on the front surface of the display panel of the display device and
transparently attached to the transparent cover whose periphery is attached to the case of the
display device via a transparent adhesive. In the display device having the transparent cover as a
vibrator by pasting the piezoelectric element, the piezoelectric element is pasted on the recessed
bottom surface provided in the central portion of the transparent cover, and the present
invention will be described below. Do. FIG. 3 is a schematic cross-sectional view of a watch
according to an embodiment of the present invention. As shown in the figure, a transparent cover
(cover) 5 made of a transparent glass plate is fitted on the front end of the ring-shaped main
body 4 of the watch 14 via a ring-shaped patt 13t having an L-shaped cross section. It is attached
in the state. In the center of the inner surface of the transparent cover 5, a recess 15 is provided.
In addition, a transparent evaporation electrode 6 made of In, O, -8 nO is formed on the bottom
of this depression, and In, O, = SnO on both sides of the transparent piezoelectric magnetic plate
10 is formed on this depression bottom. The transparent vapor deposition electrodes 8, 9thaving piezoelectric elements 16 are pasted 9 through the transparent adhesive 7t-. In addition,
a module 17 is built in the main unit 4 from a watch driving unit to which a drive source and the
like (not shown) is attached, and the other end of the main unit 4 is attached with a back cover
18 The two contacts 11.12 extend and directly contact one exposed deposition electrode 9 of the
tip mineral electrode 16 at one contact 12 ░, and the light leakage of the other contact 11 is of
the piezoelectric element 16 The piezoelectric element 16 vibrates to emit a sound when a
predetermined voltage is applied between the inner contacts 11.12 7 in contact with the
transparent vapor deposition electrode 6 electrically connected to the other. According to such
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an embodiment, the central portion of one surface of the transparent cover 5 is depressed to
make the central portion of the transparent cover 5 thinner, and the piezoelectric element 16 is
attached to the thin fJJll. The thickness in the horizontal layer state of the transparent cover 5
and the piezoelectric element 16 can be thinner than in the prior art. Therefore, since it is
possible to make the watch thinner, the circumferential portion which is the attachment portion
of the transparent cover 5 to the main body 4 is thicker as in the conventional case, and
therefore the attachment k to the main body 4 also causes trouble. There is no (e.g., small size) Fi
or wrinkle, but mechanical strength is also sufficient. Furthermore, in the structure of this
embodiment, the transparent cover portion to which the piezoelectric element 16 is attached is
thin, and this transparent cover portion vibrates largely due to the distortion of the piezoelectric
element 16 and the volume (sound pressure) increases. is there.
The present invention is not limited to the above embodiment. That is, the present invention can
also be applied to an electronic device having a display unit such as a watch other than a
wristwatch or a calculator, as described above K, the display device of the present invention
According to this, since the transparent glass portion to which the piezoelectric element of the
display portion is attached can be thinned, the thickness of the display device can be reduced,
and the volume of the transparent glass portion is increased because the thickness is reduced.
Play an effect.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view of a
conventional watch, FIG. 2 is a partially enlarged cross-sectional view of the same, and FIG. 3 is a
schematic cross-sectional view of a watch according to an embodiment of the present invention.
EndPage: 21 иии Display panel, 2 drive source, 3 и и и и и и и и и и и и и и и и и и и и и и и и и и и и 5 cover, 6 и и и
transparent deposition electrode, 7 и и transparent adhesive, 8.9 иии Vapor deposited electrode, 10
иии transparent piezoelectric ceramic plate, 11.12 и и и contactor, 13 и и и и и и и и и clock, 15 и и и
depression и 16 и и и piezoelectric element, 17 и и и Module, 18 ... back cover agent patent attorney
thin 1) Toshiyuki 'Ц f1 Figure 2 EndPage: ?
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