JP4196865B2 - Electro-optical device, sound generator and electronic device - Google Patents

Description

  The present invention relates to a sounding device having a sounding body such as a speaker, an electro-optical device, and an electronic apparatus equipped with the electro-optical device.

An electro-optical device such as a liquid crystal device is used as a display unit of an electronic device such as a mobile phone or a personal computer. In recent years, electronic devices have various functions, and the number of components required is increased accordingly. For this reason, it is required to efficiently accommodate the necessary components in the housing of the electronic device. For example, a portable communication terminal device has been disclosed that saves space by facing a liquid crystal device and a speaker in close proximity (see, for example, Patent Document 1). Such a speaker has a main body that emits sound, and a terminal portion that connects the main body and the outside, and is accommodated in, for example, a case. The case is formed according to the size of the speaker.
JP 2002-77346 A ([0009] to [0013] FIG. 1)

  However, depending on the position of the terminal portion when the speaker is accommodated in the case, the corner portion of the case accommodating portion becomes a dead space, and the entire module including the case becomes large.

  In view of the circumstances as described above, it is an object of the present invention to provide a sound generating device, an electro-optical device, and an electronic apparatus equipped with the electro-optical device that can reduce the size of a case housing a speaker and the entire module. .

To achieve the above object, an electro-optical device according to main aspect of the present invention, an electro-optical panel having a substrate holding the electro-optical material, the outer shape is circular sound producing body and the sound body circular circumference And a rectangular case that accommodates the sounding body, the sounding body having a terminal portion that is a corner portion of the case. It is accommodated so that it may be located in.

  According to the present invention, since the terminal portion is accommodated so as to be positioned at the corner portion of the case, the dead space can be effectively utilized. Since the terminal portion is accommodated in this dead space, the space becomes free, so that the size of the case can be reduced by the amount of the free space. As a result, not only the case but also the module itself can be miniaturized, and efficient housing can be achieved.

According to an aspect of the present invention, the sounding body is provided in the vicinity of a region overlapping the electro-optical panel, and is housed integrally with the electro-optical panel in the case. When the electro-optic panel and the sounding body are integrally formed close to the case, the position is adjusted in advance so that the vibration when the sounding body emits a sound does not affect the display characteristics of the electro-optic panel. A support body can be arranged. For example, since it is not necessary to make such adjustments when mounting on an electronic device, the labor and time required for manufacturing can be saved. Furthermore, by integrally forming the case, the case in which the sounding body is accommodated can be made smaller than when separately formed, and can be easily accommodated in an electronic device, for example.

According to an aspect of the present invention, the case has an inner wall in a housing portion that houses the sounding body, and is housed so that an outer periphery of the sounding body body and at least a part of the terminal portion are in contact with the inner wall. It is characterized by being. Since the space between the outer periphery of the sound generator body and the inner wall of the case also becomes a dead space, the dead space can be used effectively by arranging the terminal part in the dead space, and the size of the case should be reduced. Can do. Here, the inner wall may be formed in a rectangular shape, for example, so as to be in contact with the outer periphery of the sounding body at a point. In this case, by providing a contact point between the sounding body and the inner wall, it is possible to suppress the sounding body from moving due to vibration or the like. Further, the inner wall may be formed so as to penetrate the case in the same shape as the contour of the outer periphery of the sounding body. In this case, since the inner wall is in contact with the entire outer periphery including the main body and the terminal portion of the sounding body, movement of the sounding body due to vibration or the like can be more reliably suppressed.

  According to an aspect of the present invention, a plurality of the terminal portions are provided, and the plurality of terminal portions are provided by being divided into at least two corner portions of the case. By providing the terminal portions in two, the size per terminal portion can be reduced, so that the space occupied by each corner portion can be suppressed. Thereby, the magnitude | size of a case can be made smaller and a module can be reduced in size.

According to one aspect of the present invention, the electro-optical panel includes a substrate that is electrically connected to the terminal portion of the sounding body, and the electro-optical panel and the substrate are connected on the side where the electro-optical panel and the substrate are connected. The terminal part is arranged at a corner part . By providing the two corners on the base material side, the distance between the base material and the terminal portion can be shortened, so that the length of the base material can be shortened. Thereby, a module can be reduced in size and it becomes possible to also suppress the manufacturing cost of a base material.

According to an aspect of the present invention, the sound generator body further includes a locking portion that is provided so as to protrude from the circular outer periphery of the sounding body main body and is locked to the case, and the locking portion is the case. The sounding body is arranged so that the terminal portion is located at a corner other than the corner where the terminal is accommodated. Thereby, since it can suppress that a sounding body rotates within a case, a terminal part does not move with rotation of a sounding body, and the stability of a connection can be ensured. The locking portion may be provided at a corner portion facing the corner portion in which the terminal portion of the case is accommodated, or may be provided at another corner portion.

  An electronic apparatus according to another aspect of the present invention includes the above-described electro-optical device.

  According to the present invention, since the module of the electro-optical device itself is reduced in size, it is possible to obtain an electronic apparatus that can efficiently accommodate necessary components.

A sounding device according to another aspect of the present invention includes a sounding body having a circular sounding body main body and a terminal portion that protrudes outward from a circular outer periphery of the sounding body main body and is electrically connected to the outside, And a rectangular case for accommodating the sounding body, wherein the sounding body is accommodated so that the terminal portion is positioned at a corner of the case.

  According to the present invention, since the terminal portion is accommodated so as to be positioned at the corner portion of the case, the dead space can be effectively utilized. Accordingly, since the terminal portion is accommodated in the dead space, the space becomes free, so that the size of the case of the sounding device can be reduced by the amount of the free space. In addition, even when the sounding body and the electro-optical panel cannot be accommodated integrally in one case, it is possible to save the space of the electronic device including the sounding device.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings. In the following embodiments, the liquid crystal device 1 with a sounding body will be described as an example of an electro-optical device.

  FIG. 1 is an exploded perspective view of a liquid crystal device 1 with a sounding body according to the present embodiment. FIG. 2 is a schematic plan view when the liquid crystal device 1 with a sounding body is assembled.

  The liquid crystal device 1 with a sounding body includes a liquid crystal panel 2, a sounding body 3, and a flexible substrate 4, and is accommodated in a package 5, for example. An illumination device such as a backlight 9 and other incidental devices (not shown) are attached as necessary. Here, the liquid crystal device used in the liquid crystal device 1 with the sounding body may be any of a TFT (Thin Film Transistor) active matrix type, a passive matrix type, a TFD (Thin Film Diode) active matrix type liquid crystal device, and the like. In addition, the present invention is not limited to the liquid crystal device, and can be applied to other electro-optical devices such as inorganic or organic electroluminescence devices, plasma display devices, electrophoretic display devices, and devices using electron-emitting devices. . Hereinafter, a TFT active matrix type will be described as an example of the liquid crystal device used for the liquid crystal device 1 with a sounding body.

  The liquid crystal panel 2 has substrates 6 and 7 and is accommodated in the panel holder 5a together with the backlight 9 and the like. The substrate 6 and the substrate 7 are plate-like members made of a light-transmitting material such as glass or synthetic resin, for example, and are bonded to each other with the sealant 8 therebetween. A gate electrode in the X direction and a source electrode in the Y direction are formed on the inner (liquid crystal side) surface of the substrate 6, and a pixel electrode is formed for each pixel (not shown). The gate electrode and the source electrode are formed of a transparent conductive material such as ITO (Indium Tin Oxide). Each pixel is provided with a transistor in which each of three terminals is connected to a gate electrode, a source electrode, and a pixel electrode (not shown). Liquid crystal is sealed in the gap between the substrate 6 and the substrate 7. The substrate 6 has a region (hereinafter referred to as “projected portion”) 6 a that projects from the outer peripheral edge of the substrate 7. On the surface of the projecting portion 6a, a terminal group 6b to which wirings routed from the gate electrode and the source electrode are connected is formed.

  The sounding body 3 includes a sounding body main body 3a and a terminal portion 3b, and is accommodated in contact with the sounding body holder 5b at, for example, four points J, K, L, and M. A piezoelectric vibrator (not shown) is provided inside the sounding body main body 3a. The terminal portion 3b is accommodated in a corner portion of the sounding body holder 5b. That is, as shown in FIG. 2, the entire sounding body 3 is accommodated with respect to the liquid crystal panel 2. The terminal portion 3b is formed with a terminal group 3c having two terminals electrically connected to the piezoelectric vibrator inside the sounding body main body 3a.

  The flexible substrate 4 is formed of, for example, a resin such as polyimide, and is bonded to the liquid crystal panel 2 and the sounding body 3 respectively.

  The flexible substrate 4 includes a main body portion 4a joined to the liquid crystal panel 2, a branch portion 4b joined to the sounding body 3, and a connector portion 4c connected to, for example, an external device or a driver. The branch portion 4b is formed so as to bypass the main body portion 4a, and the connector portion 4c is formed so as to protrude from the main body portion 4a, for example, in a convex shape. The main body portion 4a has a joint portion 10, a terminal group 11, wirings 12 and 13, and a driver 14 for driving the liquid crystal panel 2. The branch portion 4b has a joint portion 15, a terminal group 16 and wirings 17, and a connector portion 4c. Has connector terminals 18 and 19 (a group of connector terminals).

  The joint portion 10 is joined to the projecting portion 6 a of the liquid crystal panel 2. A terminal group 11 is formed on the joint surface. Each terminal of the terminal group 11 is electrically connected to each terminal of the terminal group 6b via conductive particles contained in, for example, an anisotropic conductive film (ACF) resin. The wiring 12 connects the terminal group 11 and the driving driver 14. The wiring 13 connects the driving driver 14 and the connector terminal 18. A connection terminal (not shown) is formed in the wiring 12 and the wiring 13 at a portion connected to the driving driver 14. The driving driver 14 is mounted on the flexible substrate 4 via an ACF, for example. The driver 14 is provided with, for example, a bump electrode group on the surface facing the flexible substrate 4, and each bump electrode and the connection terminals of the wirings 12 and 13 are electrically connected through, for example, conductive particles contained in the ACF. Connected.

  On the other hand, the joint portion 15 is joined to the terminal portion 3 b of the sounding body 3. A terminal group 16 is formed on the joint surface. Each terminal of the terminal group 16 is electrically connected to each terminal of the terminal group 3c through, for example, conductive particles included in the ACF, similarly to the joint portion 10. The wiring 17 is formed along the branch portion 4 b and connects each terminal of the terminal group 16 and the connector terminal 19.

  The connector terminals 18 and 19 are arranged in the connector portion 4c at an equal pitch, for example. The liquid crystal panel 2 and the sounding body 3 are connected to external devices, drivers and the like via the connector terminals 18 and 19. By this connector portion 4c, the liquid crystal panel 2 and the sounding body 3 can be collectively connected to the outside.

  Moreover, the panel holder 5a has the accommodating part 20 which accommodates the liquid crystal panel 2, etc., the recessed part 21 for hold | maintaining the main-body part 4a of the flexible substrate 4, and the convex part 22 for fixing to the package housing | casing 5c. The sounding body holder 5b has a housing part 23 for housing the sounding body 3, a concave part 24 for holding the branching part 4b of the flexible substrate 4, and a convex part 25 for fixing to the package housing 5c. As described above, the inner wall 23a of the housing portion 23 may be formed in a rectangular shape so as to make point contact with the outer periphery of the sounding body 3 at, for example, four points J, K, L, and M when the sounding body 3 is housed. It may be formed so as to be in contact with one or more of the four points J, K, L, and M. By providing a contact point between the sounding body 3 and the inner wall 23a, it is possible to prevent the sounding body 3 from moving due to vibration or the like, for example. Further, it may be formed so as to penetrate the case in the same shape as the contour of the sounding body 3. When the inner wall 23a is formed in the same shape as the contour of the sounding body 3, the entire outer periphery of the sounding body 3 including the sounding body main body 3a and the terminal portion 3b is in contact with the inner wall 23a. Can be suppressed more reliably. The concave portion 24 is formed at the corner of the panel holder 5a so as to correspond to the position of the terminal portion 3b. The package housing 5c is fitted with the window 26 formed so as to correspond to the display part of the liquid crystal panel 2, the hole 27 fitted with the convex part 22 of the panel holder 5a, and the convex part 25 of the sounding body holder 5b. It has a hole 28.

  For example, a support 3d may be interposed between the panel holder 5a and the sounding body 3 in order to reduce vibration when the sounding body 3 emits sound. Similarly, for example, a support 3e having a hole in the center may be installed in the accommodating portion 23 of the sounding body holder 5b. Further, the panel holder 5b may be provided with a sound emitting hole so as to communicate with the hole at the center of the support 3e.

  According to this embodiment, since the terminal part 3b is accommodated in the corner part of the sounding body holder 5b, the dead space of the corner part of the sounding body holder 5b can be utilized effectively. As shown in FIG. 3, when the terminal portion 3b is accommodated in the corner portion (FIG. 3A), it is compared with the case where the terminal portion 3b is accommodated near the center of one side of the sounding body holder 5b (FIG. 3B). The length in the X direction of the accommodating portion 23 of the sound generator holder 5b can be shortened by t. Thus, by utilizing the dead space, an empty space is formed in the accommodating portion 23 in the sounding body holder 5b, and the size of the sounding body holder 5b can be reduced accordingly. Thereby, the whole module including the panel holder 5a and the package 5 can be reduced in size, and efficient accommodation can be achieved.

  Next, a second embodiment of the present invention will be described. Since the configuration of the sounding body 3 is different from that of the first embodiment, this point will be mainly described. Constituent elements common to the constituent elements of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted.

  FIG. 4 is a plan view of the liquid crystal device 201 with a sounding body according to the present embodiment.

  The sounding body 3 has a sounding body main body 3a and terminal portions 3b and 3c. The terminal portions 3b and 3c are separately provided so as to be positioned at, for example, two corners of the sounding body holder 5b. The terminals 3b and 3c are respectively formed with terminals 3d and 3e that are electrically connected to the piezoelectric vibrator inside the sounding body main body 3a.

  The flexible substrate 4 has a main body portion 4a joined to the liquid crystal panel 2, branch portions 4b and 4c joined to the sounding body 3, and a connector portion 4d connected to, for example, an external device or a driver. The branch portions 4b and 4c are formed so as to bypass the main body portion 4a. The branch portion 4b is connected to the terminal portion 3b, and the branch portion 4c is connected to the terminal portion 3c. The connector portion 4d is formed so as to protrude, for example, in a convex shape from the main body portion 4a.

  The branch portion 4b has a joint portion 15a, a terminal 16a, and a wire 17a. The branch portion 4c has a joint portion 15b, a terminal 16b, and a wire 17b, and the connector portion 4d has connector terminals 18 and 19.

  The joining portion 15a is joined to the terminal portion 3b of the sounding body 3. The terminal 16a is electrically connected to the terminal 3d through, for example, conductive particles included in the ACF. The wiring 17a is formed along the branch portion 4b and connects the terminal group 16a and the connector terminal 19a. Further, the joint portion 15 b is joined to the terminal portion 3 c of the sounding body 3. Similarly to the terminal 16a, the terminal 16b is electrically connected to the terminal 3e through, for example, conductive particles included in the ACF. The wiring 17b is formed along the branch portion 4c and connects the terminal group 16b and the connector terminal 19b.

  The connector terminals 19 are provided, for example, at both ends of the connector terminal group so as to correspond to the positions of the terminal portions 3b and 3c (19a and 19b), respectively, and the lengths of the wirings 17a and 17b are minimized. .

  In this embodiment, since the terminal part is divided into two parts 3b and 3c, the size per terminal part can be reduced, and the space of the terminal parts 3b and 3c occupying each corner part is suppressed. be able to. Thereby, the magnitude | size of a case can be made smaller and a module can be reduced in size.

  Next, a third embodiment of the present invention will be described. Since the configuration of the sounding body 3 is different from that of the first embodiment, this point will be mainly described. Constituent elements common to the constituent elements of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted.

  FIG. 5 is a plan view of the liquid crystal device 301 with a sounding body according to the present embodiment.

  The sounding body 3 is housed in the housing portion 23 of the sounding body holder 5b, and has a sounding body body 3a, a terminal portion 3b, and a locking portion 3f. The locking part 3f is provided in a convex shape on the outer periphery of the sounding body main body 3a, and can be locked to the inner wall 23a of the housing part 23 of the sounding body holder 5b. The locking portion 3f may be provided at a corner portion facing the terminal portion 3b as shown in FIG. 5, or may be provided at another corner portion as indicated by a broken line.

  As in the present embodiment, since the locking portion 3f provided on the outer periphery of the sounding body main body 3a and locked to the inner wall 23a is provided at the corner of the sounding body holder 5b, the locking portion 3f is locked to the inner wall 23a. In this state, the sounding body 3 can be fixed to the inner wall 23a by both the terminal portion 3b and the locking portion 3f. Accordingly, the sounding body 3 can be prevented from rotating due to, for example, vibration or impact, so that the terminal portion 3b does not move with the rotation of the sounding body 3. For example, the flexible board 4 Stable connection can be ensured.

  Next, an electronic apparatus according to a fourth embodiment of the present invention will be described.

  FIG. 6 is a schematic configuration diagram showing the overall configuration of the display control system of the electronic apparatus according to the present embodiment.

  The electronic device 300 includes, for example, a liquid crystal panel 2 and a display control circuit 390 as a display control system, and the display control circuit 390 includes a display information output source 391, a display information processing circuit 392, a power supply circuit 393, a timing generator 394, and the like. .

  Further, a driving circuit 361 for driving the display area G is connected to the liquid crystal panel 2.

  The display information output source 391 includes a memory such as a ROM (Read Only Memory) or a RAM (Random Access Memory), a storage unit such as a magnetic recording disk or an optical recording disk, and a tuning circuit that tunes and outputs a digital image signal. It has. Further, the display information output source 391 is configured to supply display information to the display information processing circuit 392 in the form of a predetermined format image signal or the like based on various clock signals generated by the timing generator 394.

  The display information processing circuit 392 includes various well-known circuits such as a serial-parallel conversion circuit, an amplification / inversion circuit, a rotation circuit, a gamma correction circuit, and a clamp circuit, and executes processing of input display information to display the image. Information is supplied to the drive circuit 361 together with the clock signal CLK. The driving circuit 361 includes a scanning line driving circuit, a data line driving circuit, and an inspection circuit. The power supply circuit 393 supplies a predetermined voltage to each component described above.

  Such an electronic device is required to efficiently accommodate necessary components. In the liquid crystal device 1 with a sounding body mounted on the electronic device, since the terminal portion 3b is accommodated in the corner of the sounding body holder 5b, the dead space at the corner of the sounding body holder 5b can be used effectively. . By utilizing the dead space, an empty space is formed in the accommodating portion 23 in the sounding body holder 5b, so that the size of the sounding body holder 5b can be reduced by the amount of the empty space. Thereby, the whole module including the panel holder 5a and the package 5 can be reduced in size, and efficient accommodation can be achieved. Therefore, it can be said that the significance of the present invention is great.

  Further, when the liquid crystal panel 2 and the sounding body 3 are integrally formed, the position is adjusted in advance so that the vibration when the sounding body 3 emits a sound does not affect the display characteristics of the liquid crystal panel 2 or the support body. 3d and 3e can be arranged. For example, when the sound generator-equipped liquid crystal device 1 is mounted on an electronic device, it is not necessary to make such adjustments, so that labor and time required for manufacturing can be saved. Furthermore, by integrally forming, for example, there is an advantage that it can be easily accommodated in an electronic device.

  Specific electronic devices include, in addition to the above-described cellular phones, touch panels equipped with personal computers and liquid crystal devices, liquid crystal televisions, viewfinder type, monitor direct view type video tape recorders, car navigation systems, pagers, word processors, work pieces, etc. Stations, videophones, POS terminals, IC recorders, remote controls with liquid crystals, watches, etc. Needless to say, the liquid crystal devices with sound generators 1, 201, and 301 can be applied as display units of these various electronic devices.

  The present invention is not limited to the embodiment described above, and various modifications are possible.

  Moreover, although the said embodiment demonstrated the structure of the liquid crystal panel 1 with a sounding body which integrally accommodates the liquid crystal panel 2 and the sounding body 3 in the one package 5, the sounding body 3 is accommodated in a package independently. The present invention can also be applied to a configuration of a sound generation device. In this case, it becomes a structure accommodated so that the terminal part 3b may be located in the corner | angular part of the said case. Thereby, since the terminal part 3b is accommodated so that it may be located in the corner | angular part of a case, a dead space can be utilized effectively. Since the terminal portion 3b is accommodated in this dead space, the space is freed, so that the size of the case can be reduced by the amount of the free space. Further, even when the sounding body 3 and the liquid crystal panel 2 cannot be accommodated integrally in one case, it is possible to save the space of the electronic device equipped with the sounding device.

It is a disassembled perspective view which shows the liquid crystal device with a sounding body which concerns on 1st Embodiment of this invention. It is a top view which shows the liquid crystal device with a sounding body which concerns on this embodiment. It is a top view which shows the liquid crystal device with a sounding body of this embodiment compared with the past. It is a top view which shows the liquid crystal device with a sounding body which concerns on 2nd Embodiment of this invention. It is a top view which shows the liquid crystal device with a sounding body which concerns on 3rd Embodiment of this invention. It is a block diagram which shows the structure of the electronic device which concerns on the 4th Embodiment of this invention.

Explanation of symbols

  1, 201, 301 ... Liquid crystal device with sound generator 2 ... Liquid crystal panel 3 ... Sound generator 3a ... Sound generator body 3b ... Terminal portion 4 ... Flexible substrate 300 ... Electronic device

Claims (8)

An electro-optic panel having a substrate holding an electro-optic material;
A sounding body having a circular sounding body body and a terminal portion that protrudes outward from the circular outer periphery of the sounding body body and is electrically connected to the outside,
A rectangular case for housing the sounding body;
The electro-optical device, wherein the sounding body is accommodated so that the terminal portion is positioned at a corner of the case. 2. The electro-optical device according to claim 1, wherein the sounding body is provided in the vicinity of a region overlapping with the electro-optical panel, and is housed integrally with the electro-optical panel in the case. The case has an inner wall in a housing portion that houses the sounding body,
The electro-optical device according to claim 1, wherein an outer periphery of the sounding body main body and at least a part of the terminal portion are accommodated in contact with the inner wall. The terminal portion is provided with a plurality, the plurality of terminal portions as claimed in any one of claims 1 to 3, characterized in that provided separately in at least two corners of the case Electro-optic device. A substrate electrically connected to the electro-optical panel and the terminal of the sounding body;
4. The electro-optical device according to claim 1 , wherein the terminal portion is disposed at the corner portion on a side where the electro-optical panel and the substrate are connected . 5. Provided further so as to protrude from the outer periphery of the circular shape of the sounding body main body , further comprising a locking portion for locking to the case;
6. The sound generator according to any one of claims 1 to 5, wherein the sounding body is disposed so that the locking portion is located at a corner other than the corner where the terminal portion of the case is accommodated. The electro-optical device according to claim 1.   An electronic apparatus comprising the electro-optical device according to any one of claims 1 to 6. A sounding body having a circular sounding body main body and a terminal portion that protrudes from the outer periphery of the sounding body main body to the outside and is electrically connected to the outside,
A rectangular case for housing the sounding body;
The sounding device is housed such that the terminal portion is positioned at a corner of the case.

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