JP4655561B2 - Electro-optical device and electronic apparatus - Google Patents

Description

  The present invention relates to an electro-optical device such as a liquid crystal display device. The present invention also relates to an electronic apparatus configured using the electro-optical device.

  In recent years, electro-optical devices such as liquid crystal display devices have been widely used in electronic devices such as mobile phones and portable information terminals. For example, an electro-optical device is used as a display device for displaying various types of information related to electronic equipment. The electro-optical device is a device that controls an optical output state by an electric input, and for example, a liquid crystal display device, an EL (Electro Luminescence) device, a plasma display device, and other devices can be considered.

  The above-described electro-optical device is mainly used when various types of information related to electronic devices are displayed as images. In addition to such image display means, electronic devices generate sound. It is also necessary to provide. For example, in a mobile phone, it is necessary to express what the other party speaks by voice. The means for generating such a sound is constituted by a sounding body such as a speaker, for example. In an electronic apparatus provided with both an electro-optical device and a sounding body, the electro-optical device and the sounding body are conventionally installed at different locations in a casing (for example, see Patent Document 1 or Patent Document 2). .

JP 2001-168963 A (page 3, FIG. 2) JP 2002-077346 A (page 3, FIG. 1)

  In the conventional mobile phone, when the electro-optical device and the sounding body are arranged in the thickness direction of the mobile phone, the thickness of the mobile phone is increased. In recent years, there has been an increasing demand for a mobile phone to be thin, and the increase in thickness of the mobile phone as described above is against the demand for thinning. Further, in order to avoid the thickness of the cellular phone, it can be considered that the electro-optical device and the sounding body are arranged so as not to overlap each other. However, in this case, the planar shape of the mobile phone becomes large, and it is still impossible to meet the demand for downsizing.

  In addition, when a sounding body is provided inside a mobile phone, the acoustic design around the sounding body must be performed after an electro-optical device is installed inside the mobile phone. And thinning was difficult.

  In order to solve the above-mentioned problem, that is, the problem that the electronic device becomes large when both the electro-optical device and the sounding body are incorporated into the electronic device such as a mobile phone, the applicant of the present application is entitled Japanese Patent No. 128073 and Japanese Patent Application No. 2003-340322 proposed an electro-optical device with a sounding body in which an electro-optical device and a sounding body are assembled together. According to this electro-optical device with a sounding body, there is no need to separately prepare a structure for supporting an electro-optical device and a structure for supporting a sounding body when producing an electronic device. A single structure for supporting the apparatus may be prepared, and the structure of the electronic device can be simplified, thinned, and miniaturized. In addition, when the electro-optic device with a sound generator is manufactured, the sound conditions of the sound generator, for example, the air chamber is prepared, and there is no need to make special sound settings for the sound generator on the electronic device side, making it easy to manufacture the electronic device. became.

  However, the proposed electro-optical device with a sounding body has a problem that a special mounting structure or a fixing structure is required when it is mounted on a housing of an electronic device. In addition, the mechanical strength for pressing the sounding body is provided only by the structure of the electro-optical device with the sounding body, and the structure of the electronic device does not contribute to the mechanical strength. Tended to run out. In addition, when the electronic device is operated after the electro-optic device with a sound generator is assembled to the electronic device, unnecessary sound may be generated due to vibration between the electro-optical device with the sound generator and the housing of the electronic device. there were.

  The present invention has been made in view of the above-mentioned problems, and a first object is to incorporate an electro-optical device when a sounding body is also incorporated in a device in which the electro-optical device is incorporated. It is to be able to form a small device.

  The second object is that the electro-optical device with a sounding body is assembled in an electronic device so that no special mounting device or fixing device need be prepared. It is to be able to give a sufficient pressing strength to the sounding body and to prevent unnecessary vibration sound from being generated from the electronic device after the electrooptic device with the sounding body is assembled.

The electro-optical device according to the present invention includes an electro-optical panel including an electro-optical material, a sound generator that generates sound, a first frame that forms an air chamber for the sound generator, the electro-optical panel, The sound generator and a second frame that accommodates the frame, the second frame having a fixing structure for being attached to a fixed member.

  In the above structure, an “electro-optical substance” is a substance whose optical characteristics change in accordance with changes in electrical conditions. Specifically, a liquid crystal used in a liquid crystal display device and an EL used in an EL device. The gas used in the plasma display device can be considered. The “electro-optical panel” is a plate-like structure, and a liquid crystal panel constituting a liquid crystal display device, an EL panel constituting an EL device, a plasma display panel constituting a plasma display device, and the like are conceivable. In addition, the “sound generator” can be configured by a speaker that generates sound based on vibration of a diaphragm, for example. In addition, the “first frame” and the “second frame” can be formed of, for example, resin, metal, or the like.

According to the electro-optical device according to the reference invention of the present case , the electro-optical panel and the sounding body are incorporated as one unit, that is, as one structure into another device (hereinafter, this device is referred to as an assembly device). Therefore, the overall shape of the assembly device can be made smaller and thinner than when the electro-optic panel and the sounding body are separately incorporated in the assembly device. The assembly device includes a fixed member for fixing a unit including the electro-optical panel and the sounding body. The fixed member is, for example, a machine frame (that is, a frame) of an assembly device or a housing of the assembly device.

In the electro-optical device according to the reference invention of the present case , (1) the fixing structure is provided on the second frame that accommodates the electro-optical panel, the sounding body, and the first frame. It is not necessary to prepare a special fixing device. In addition, (2) since the fixing structure is provided in the second frame itself that accommodates the sounding body, the strength for pressing the sounding body can be increased when the electro-optical device is incorporated in the assembly device together with the sounding body. (3) When the electro-optical device is attached to the assembly device using the fixing structure provided in the second frame of the electro-optical device, an unnecessary gap is formed between the electro-optical device and the assembly device. For this reason, it is possible to prevent unnecessary vibration noise such as chatter noise (that is, unnecessary vibration noise generated by vibration of other members due to vibration of the speaker).

  Next, an electro-optical device according to the present invention includes an electro-optical panel including an electro-optical material, a sounding body that is disposed on a back surface of the electro-optical panel and generates sound, and between the electro-optical panel and the sounding body. A first frame that holds the electro-optical panel and forms an air chamber for the sounding body, and is disposed on a back surface of the sounding body and houses the first frame and the sounding body. And a second frame having a fixing structure to be fixed to the fixed member.

  According to this electro-optical device, since the electro-optical panel and the sounding body are incorporated into another assembly device as one unit, that is, one structure, the electro-optical panel and the sounding body are separately provided in the assembly device. Compared to the case of incorporation, the overall shape of the assembly device can be made smaller and thinner. The assembly device includes a fixed member for fixing a unit including the electro-optical panel and the sounding body.

  In the above electro-optical device, (1) the fixing structure is provided on the second frame that accommodates the electro-optical panel, the sounding body, and the first frame. There is no need to prepare a fixing device. In addition, (2) since the fixing structure is provided in the second frame itself that accommodates the sounding body, the strength for pressing the sounding body can be increased when the electro-optical device is incorporated in the assembly device together with the sounding body. (3) When the electro-optical device is attached to the assembly device using the fixing structure provided in the second frame of the electro-optical device, an unnecessary gap is formed between the electro-optical device and the assembly device. Therefore, it is possible to prevent generation of unnecessary vibration noise such as chatter noise.

  Next, in the electro-optical device according to the invention, the second frame has a bottom wall and a side wall extending from the bottom wall, and a portion facing the bottom wall is formed by an end portion of the side wall. Preferably, the fixing structure is provided at an end of the side wall on the opening side. If the fixing structure is provided at the end portion on the opening side of the side wall in this way, when the second frame is fixed to the fixed member by the fixing structure, the end portion on the opening side of the second frame is firmly attached to the fixing member. Can be joined. For this reason, it is possible to reliably prevent chatter noises and the like from being generated at the joint between the second frame and the housing.

  Next, in the electro-optical device according to the present invention, the sounding body is disposed in the second frame at a position closer to the bottom wall than the electro-optical panel, and the electro-optical panel has a display area of the electro-optical panel. It is desirable to expose to the outside through the opening of the second frame. In this way, when the second frame is fixed to the fixed object, the electro-optical panel exposed from the opening can be directly pressed by the fixed object itself.

  Conventionally, a metal frame separate from the second frame is prepared, and the second frame is often fixed to the member to be fixed in a state where the electro-optical panel is pressed and fixed by the metal frame. When such a fixing method is adopted, when the second frame is fixed to the fixed member 2, the above-described separate metal frame for pressing the panel is interposed between the fixed member and the second frame. There has been a situation of intervening or interposing between a fixed member and the electro-optical panel. In this case, when the fixed member or the second frame vibrates, there is a possibility that unnecessary vibration noise such as chatter noise may be generated between the metal frame and the fixed member.

  On the other hand, if the electro-optical panel is exposed to the outside through the opening of the second frame as in this embodiment, the electro-optical panel can be pressed directly by the fixed member, and the fixed Unnecessary inclusions can be eliminated from between the member and the second frame or between the fixed member and the electro-optical panel. And as a result, the chatter sound etc. which originated in such an inclusion can be canceled fundamentally.

  In the electro-optical device according to the aspect of the invention, it is preferable that the electro-optical panel, the first frame, and the sounding body are sandwiched and fixed between the second frame and the fixed member. Further, it is preferable that the first frame has a convex portion or a concave portion, and the second frame fits with the convex portion or the concave portion of the first frame. In the electro-optical device according to the aspect of the invention, it is preferable that the first frame has a sound guide path for guiding the sound generated by the sounding body.

  Next, in the electro-optical device according to the aspect of the invention, it is preferable that the fixing structure fixes the second frame to the fixed member in a state where the second frame is biased to the fixed member. If the second frame is fixed to the member to be fixed in the biased state in this manner, the second frame and the member to be fixed are firmly fixed, so that chatter noise can be reliably prevented.

  Next, in the electro-optical device according to the present invention, it is preferable that the fixing structure is a hole to be engaged with a member to be fixed, that is, a claw provided in the assembly device. In the electro-optical device according to the aspect of the invention, it is preferable that the fixing structure is a fastening structure including a screw. In the electro-optical device according to the aspect of the invention, it is preferable that the fixing structure is a flange that fits into a rail provided on the fixed member, that is, an overhang portion. In the electro-optical device according to the aspect of the invention, it is preferable that the fixing structure is a projecting piece that is bent after being inserted into a hole provided in the member to be fixed and is engaged with the member to be fixed. If the above-described fixing structure is employed, the electro-optical device can be firmly assembled to the assembling apparatus, although the fixing structure can be easily formed.

  Next, an electronic apparatus according to the present invention includes an electro-optical device and a fixed member to which the electro-optical device is attached, and the electro-optical device is an electro-optical device having the above-described configuration. To do. Here, the member to be fixed is an arbitrary member, and can be, for example, an outer case of an electronic device, that is, a housing.

  According to the electro-optical device according to the present invention, the electro-optical panel and the sounding body are incorporated as one unit, that is, one structure, into the assembly device, that is, the electronic device. Therefore, the electro-optical device includes the electro-optical device. The electronic apparatus according to the present invention can be reduced in size and thickness as compared with the case where the electro-optical panel and the sounding body are separately incorporated in the electronic apparatus.

  In the electro-optical device according to the present invention, (1) the fixing structure is provided on the second frame that accommodates the elements of the electro-optical panel, the sounding body, and the first frame. There is no need for special installation equipment. Further, (2) since the fixing structure is provided in the second frame itself for accommodating the sounding body, the strength for pressing the sounding body can be increased when the electro-optical device is incorporated in the electronic apparatus together with the sounding body. (3) When the electro-optical device is attached to the electronic device using the fixing structure provided in the second frame of the electro-optical device, an unnecessary gap is formed between the electro-optical device and the electronic device. Therefore, it is possible to prevent generation of unnecessary vibration noise such as chatter noise. Therefore, the electronic apparatus according to the present invention including the electro-optical device has the same effect, that is, the electronic apparatus does not have to prepare a special mounting apparatus, and the strength for pressing the sounding body is increased. In addition, it is possible to obtain an effect that generation of unnecessary sounds such as chatter noise can be prevented.

(First embodiment of electro-optical device and electronic apparatus)
Hereinafter, an electro-optical device and an electronic apparatus according to the present invention will be described based on embodiments. In addition, embodiment described below is an example of this invention, Comprising: This invention is not limited. In the following description, reference will be made to the drawings as necessary. In this drawing, in order to clearly show important constituent elements among the structure composed of a plurality of constituent elements, the relative dimensions different from actual ones are shown. Is shown.

  FIG. 1 shows a planar structure of an embodiment of an electro-optical device and an electronic apparatus using the same according to the present invention. FIG. 2 shows a cross-sectional structure of the electro-optical device and the electronic apparatus according to the AA line of FIG. FIG. 3 shows another cross-sectional structure of the electro-optical device and the electronic apparatus according to the line BB in FIG.

  In these drawings, the electronic apparatus 1 </ b> A includes a housing 2 as a fixed member, and an electro-optical device 3 </ b> A attached to the housing 2. The electronic device 1A is, for example, a mobile phone, a portable information terminal, an IC recorder, and other various devices, and the housing 2 is an outer case of these devices or a machine frame installed in the outer case. Or any other structure provided as necessary from other electronic devices. In FIG. 2, a vent hole 10 is provided in a part of the housing 2 that faces the back surface of the electro-optical device 3A.

  The electro-optical device 3 </ b> A includes a liquid crystal display device 4 as a display device, a speaker unit 6 as a sounding body, a first frame 8, and a second frame 9. The liquid crystal display device 4 includes a liquid crystal panel 5 as an electro-optical panel, and a lighting device 7 attached to the liquid crystal panel 5. The liquid crystal display device 4 displays various information related to the electronic apparatus 1A on the display surface of the liquid crystal panel 5, and this display is visually recognized by the observer from the direction of the arrow B. The illumination device 7 is disposed on the back side of the liquid crystal panel 5 when viewed from the observation direction indicated by the arrow B, and functions as a backlight. The illumination device 7 may be disposed on the observation side of the liquid crystal panel 5 to function as a front light.

  As shown in FIG. 1, the speaker unit 6 is arranged behind the liquid crystal panel 5, that is, on the back surface, and is arranged so as to be entirely hidden by the liquid crystal panel 5. That is, the speaker unit 6 is arranged behind the liquid crystal panel 5 without being displaced from the liquid crystal panel 5.

  The speaker unit 6 is made of aluminum (Al) and has a ring-shaped frame 11, a disk-shaped vibrator 12 integrated with the frame 11, and a disk-shaped piezoelectric element 13 fixed to the vibrator 12. And have. The second frame 9 is formed in a rectangular tube shape by a rectangular bottom wall 9a and a side wall 9b extending from the bottom wall 9a. The upper end of the side wall 9b, that is, the end facing the bottom wall 9a is an opening K2. The second frame 9 is formed of a metal such as aluminum or stainless steel, and the liquid crystal panel 5, the illumination device 7, the first frame 8, and the speaker unit 6 are accommodated therein.

  The first frame 8 is formed by resin molding, for example, and is generally formed in a prismatic shape or a square plate shape in appearance. A first air chamber R <b> 1 that is a space in surface contact with the speaker unit 6 is provided inside the first frame 8. The first air chamber R1 is formed as a columnar or disk-shaped space as indicated by a chain line in FIG.

  In FIG. 2, the first frame 8 has a recess Q at its upper end, and the illumination device 7 and the liquid crystal panel 5 are accommodated in the recess Q. A protective sheet 16 is placed on the upper end of the first frame 8. The protective sheet 16 is made of, for example, translucent plastic, and covers the surface of the liquid crystal panel 5 to protect the liquid crystal panel 5 from mechanical damage. In addition, illustration of the protection sheet 16 is abbreviate | omitted in FIG. In FIG. 2, the first frame 8 has a sound guide path P1 therein. As shown in FIG. 4, one end P1a of the sound guide path P1 communicates with a part of the upper end surface of the first air chamber R1, and the other end P1b is the front surface of the first frame 8, as shown in FIG. A sound emitting hole is opened on the surface on the observation side.

  In FIG. 1, a plurality of, in the present embodiment, four projections 35, that is, convex portions are provided on the side surface of the first frame 8. A plurality of holes 37, that is, recesses are provided on the side wall 9 b of the second frame 9 corresponding to the positions of the protrusions 35. The first frame 8 is supported by the second frame 9 by inserting the protrusions 35 into these holes 7, that is, fitting them together. In addition, you may make it provide a recessed part in the 1st frame 8, and provide a convex part in a 2nd frame.

  In FIG. 2, the first frame 8 is placed on the bottom wall 9 a of the second frame 9 via the first buffer material 17 a. In addition, the speaker unit 6 is pressed against the bottom surface at the substantially center of the first frame 8 by the bottom wall 9a of the second frame 9 through the second buffer material 17b. These buffer materials 17a and 17b are formed of an elastic material such as resin or rubber. A space between the bottom wall 9a and the speaker unit 6 and surrounded by the second buffer material 17b functions as the second air chamber R2. A vent hole 18 is provided in a part of the bottom wall 9a forming the second air chamber R2.

  The speaker unit 6 has a conductive wire 19, and an audio signal is transmitted to the piezoelectric element 13 through the conductive wire 19. The piezoelectric element 13 that has received the signal vibrates the vibrator 12, and a sound corresponding to the sound signal is generated by the interaction between the vibration and the first air chamber R1 and the second air chamber R2, and this sound is released. The sound is emitted to the outside on the observation side indicated by the arrow B through the sound hole P1b.

  In FIG. 1, the second frame 9 has fixing structures 41A at four corners. These fixing structures 41A are structures for attaching the second frame 9 to the casing 2 as a fixed member in a fixed state. As shown in FIG. 3, the fixing structure 41 </ b> A is provided on the upper end surface of the second frame 9, that is, the surface that comes into contact with the housing 2. The fixing structure 41 </ b> A is formed by a claw member 42 provided on the back surface of the housing 2 and a hole 44 provided in a flange 43 protruding from the upper end of the side wall 9 b of the second frame 9. The second frame 9 can be firmly fixed to the housing 2 by fitting the hole 44 provided in the second frame 9 into the claw member 42.

  In this fixed state, the display area of the liquid crystal panel 5 is exposed to the outside through the opening K1 of the housing 2. Further, the peripheral edge of the opening K1 presses the outer peripheral edge of the liquid crystal panel 5 through the protective sheet 16 toward the inside of the housing 2. In some cases, the liquid crystal panel 5 can be directly pressed by the peripheral edge of the housing 2 without using the protective sheet 16. Either case is an embodiment included in the present invention.

  In this fixed state, the bottom wall 9a of the second frame 9 presses the first frame 8 and the protective sheet 16 against the back surface of the housing 2 via the first cushioning material 17a. The bottom wall 9a of the second frame 9 presses the speaker unit 6 against the bottom surface of the first frame 8 via the second cushioning material 17b. Thereby, the first air chamber R1 is formed on the front surface of the speaker unit 6, and the second air chamber R2 is formed on the back surface of the speaker unit 6.

  In this fixed state, the second frame 9 is attached to the housing 2 by the elastic action of the first buffer material 17a, the second buffer material 17b, the speaker unit 6, the first frame 8, or other inclusions. It is fixed in a biased state, that is, in a state where stress is generated. By fixing the second frame 9 to the housing 2 in the biased state in this way, even if vibrations occur in the second frame 9 and the housing 2, it is ensured that chatter noise is generated between them. Can be prevented.

  Next, as described above, the liquid crystal display device 4 includes the liquid crystal panel 5 and the illumination device 7. As shown in FIG. 4, the illuminating device 7 includes a light guide 21 and an LED (Light Emitting Diode) 22 as a light source disposed to face the light incident surface 21 a of the light guide 21. The light guide 21 is made of, for example, a translucent resin. A reflective layer 23 is provided on the back side of the light guide 21 as viewed from the observation side indicated by the arrow B as necessary. In addition, a diffusion layer 24 is provided on the observation side of the light guide 21, that is, on the light emission surface 21 b side as necessary. Light generated from the LED 22 is introduced into the light guide 21 through the light incident surface 21 a, travels through the light guide 21, and then exits from the light exit surface 21 b as planar light to the liquid crystal panel 5. Supplied. The light source can also be constituted by a point light source other than the LED 22 or a linear light source such as a cold cathode tube.

  The liquid crystal panel 5 includes a first substrate 26 and a second substrate 27 facing the first substrate 26, and these substrates are formed by being bonded together by a square or rectangular frame-shaped sealing material 28 when viewed from the direction of arrow B. A gap, a so-called cell gap, is formed between the first substrate 26 and the second substrate 27, and liquid crystal as an electro-optical material is sealed therein to constitute a liquid crystal layer.

  The first substrate 26 includes a first light-transmitting substrate 29a that is rectangular or square as viewed from the direction of the arrow B. The first translucent substrate 29a is made of, for example, translucent glass, translucent plastic, or the like. In addition, a phase difference plate 31a and a polarizing plate 32a are attached to the outer surface of the first light transmitting substrate 29a by sticking or the like.

  Further, the second substrate 27 facing the first substrate 26 has a second light-transmitting substrate 29b that is rectangular or square when viewed from the direction of the arrow B. The second translucent substrate 29b is formed of, for example, translucent glass or translucent plastic. A phase difference plate 31b and a polarizing plate 32b are attached to the outer surface of the second translucent substrate 29b by sticking or the like.

  The first translucent substrate 29a has an overhang portion 33 that projects outward from the second translucent substrate 29b. On the surface of the projecting portion 33 on the second substrate 27 side, a plurality of, in this embodiment, three drive ICs 34 are formed by COG (Chip On) using, for example, an ACF (Anisotropic Conductive Film). Glass) technology. These driving ICs 34 drive the liquid crystal panel 5 by outputting scanning signals and data signals to the electrodes of the liquid crystal panel 5. In addition, an FPC (Flexible Printed Circuit) 36 as a wiring board is connected to the side edge of the overhang portion 33.

  The liquid crystal panel 5 can be configured in any display mode. For example, as for the liquid crystal driving method, either a simple matrix method or an active matrix method may be used. As for the type of liquid crystal mode, TN (Twisted Nematic), STN (Super Twisted Nematic), liquid crystal having negative dielectric anisotropy, that is, liquid crystal for vertical alignment, and any other liquid crystal can be used. In terms of the daylighting method, any of a transmissive type, a reflective type, and a transflective type may be used. In the present embodiment, since the illumination device 7 is used as shown in FIG. 4, the daylighting method is a transmissive type or a transflective type.

  The simple matrix method is a matrix method in which each pixel does not have an active element, the intersection between the scanning electrode and the data electrode corresponds to a pixel or a dot, and a drive signal is directly applied. As the liquid crystal mode for this method, TN, STN, and vertical alignment mode are used. Next, in the active matrix system, an active element is provided for each pixel or dot, the active element is turned on in the writing period and the data voltage is written, and the active element is turned off in the other period. Is a matrix method. Active elements used in this method include a three-terminal type and a two-terminal type. An example of a three-terminal active element is a TFT (Thin Film Transistor). An example of a two-terminal active element is a TFD (Thin Film Diode).

  In the liquid crystal panel 5 as described above, when performing color display, a color filter is provided on the first substrate 26 or the second substrate 27. The color filter is a filter that selectively transmits light in a specific wavelength range. Specifically, each of the three primary colors B (blue), G (green), and R (red) is associated with each dot on the first substrate 26 or the second substrate 27 in a predetermined arrangement, for example, Arrange them in stripes, deltas, and mosaics.

  Since the electronic apparatus 1A and the electro-optical device 3A according to the present embodiment are configured as described above, various types of information regarding the electronic apparatus 1A can be provided as an image on the display surface of the liquid crystal display device 4 in FIG. Furthermore, various kinds of information related to the electronic device 1A can be provided by the speaker unit 6 by voice. This sound is generated by the speaker unit 6, passes through the sound guide path P <b> 1, and then is transmitted to the outside from the sound emission hole P <b> 1 b provided on the front surface of the electronic device 1 </ b> A. An opening for sound emission is provided in a portion of the housing 2 facing the sound emission hole P1b.

  Further, in the present embodiment, the liquid crystal panel 5 and the speaker unit 6 are formed as one unit, that is, one structure body by the second frame 9, and this structure body is incorporated in the housing 2. Compared to the case where the speaker unit 6 and the speaker unit 6 are separately incorporated in the housing 2, the overall shape of the electronic device 1A can be made smaller and thinner.

  In the present embodiment, as shown in FIG. 3, since the fixing structure 41A is provided in the second frame 9 that houses the liquid crystal panel 5, the speaker unit 6, and the first frame 8, the housing 2 side of the electronic apparatus 1A is provided. There is no need to prepare a special fixing device or mounting device. This is very convenient when manufacturing the electronic apparatus 1A.

  In the present embodiment, since the fixing structure 41A is provided on the second frame 9 that accommodates the speaker unit 6, when the electro-optical device 3A is incorporated in the housing 2 together with the speaker unit 6, the speaker unit 6 is The strength for pressing down can be increased.

  In the present embodiment, when the electro-optical device 3A is attached to the housing 2 using the fixing structure 41A provided on the second frame 9 of the electro-optical device 3A, the housing 2 is in the biased state. Therefore, the electro-optical device 3A and the housing 2 are firmly fixed to each other without forming an unnecessary gap. For this reason, it is possible to prevent unnecessary vibration noise such as chatter noise between the electro-optical device 3 </ b> A and the housing 2.

  The second frame 9 has a bottom wall 9a and a side wall 9b extending from the bottom wall 9a. A portion facing the bottom wall 9a is an opening K2 formed by an end of the side wall 9b. The fixing structure 41A is provided at the end of the side wall 9b on the opening K2 side. When the fixing structure 41A is thus provided at the end of the side wall 9b on the opening K2 side, when the second frame 9 is fixed to the housing 2 by the fixing structure 41A, the end of the second frame 9 on the opening K2 side. Can be firmly joined to the housing 2. For this reason, it is possible to reliably prevent chatter noises and the like from being generated at the joint between the second frame 9 and the housing 2.

  In the present embodiment, the speaker unit 6 is disposed in the second frame 9 at a position closer to the bottom wall 9a than the liquid crystal panel 5, and the display area of the liquid crystal panel 5 is the opening K2 of the second frame 9. It is designed to be exposed to the outside. For this reason, when the 2nd frame 9 is fixed to the housing | casing 2, the liquid crystal panel 5 exposed from the opening K2 can be directly pressed down by the peripheral part of the opening K1 of the housing | casing 2. FIG.

  Conventionally, a metal frame separate from the second frame 9 is prepared, and the second frame 9 is fixed in a state where the liquid crystal panel 5 is fixed by pressing the outer peripheral area of the display area of the liquid crystal panel 5 with the metal frame. It was fixed to the housing 2. When such a fixing method is adopted, when the second frame 9 is fixed to the housing 2, the above-described separate metal frame for holding the panel is located between the housing 2 and the second frame 9. In other words, there has been a situation in which it is interposed between the casing 2 and the liquid crystal panel 5. In this case, when the housing 2 or the second frame 9 vibrates, unnecessary vibration noise such as chatter noise may occur between the metal frame and the housing 2.

  On the other hand, if the liquid crystal panel 5 is exposed to the outside through the opening K2 of the second frame 9 as in the present embodiment, the liquid crystal panel 5 can be pressed directly by the housing 2. Unnecessary inclusions can be eliminated between the housing 2 and the second frame 9 or between the housing 2 and the liquid crystal panel 5. And as a result, the chatter sound etc. which originated in such an inclusion can be canceled fundamentally.

(Second embodiment of electro-optical device and electronic apparatus)
5 and 6 show other embodiments of the electronic apparatus and the electro-optical device according to the invention. FIG. 5 shows a planar structure of the electronic device and the electro-optical device, and FIG. 6 shows a cross-sectional structure of the electronic device and the electro-optical device according to the line CC in FIG. The cross-sectional structures of the electronic apparatus and the electro-optical device according to the line AA in FIG. 5 are the same as those shown in FIG.

  In the previous embodiment shown in FIG. 1, the fixing structures 41 </ b> A are provided at the four corners of the second frame 9. The fixing structure 41 </ b> A is realized by fitting the claw member 42 provided in the housing 2 and the hole 44 provided in the second frame 9. On the other hand, in the electronic apparatus 1B of the present embodiment, as shown in FIG. 6, a rail 51 is provided at an appropriate position of the housing 2, and an overhanging portion, that is, a flange 52 is provided on the upper end surface of the second frame 9. The fixing structure 41 </ b> B is configured by the flange 52. As shown in FIG. 5, the fixing structure 41 </ b> B is provided on the upper surfaces of two side walls on the long side facing each other among the four side walls 9 a of the second frame 9. In the present embodiment, the electro-optical device 3 </ b> B can be installed at a predetermined position with respect to the housing 2 by inserting the flange 52 into the rail 51 and moving the second frame 9 along the rail 51.

(Third embodiment of electro-optical device and electronic apparatus)
7 and 8 show still another embodiment of the electronic apparatus and the electro-optical device according to the invention. 7 shows a planar structure of the electronic apparatus and the electro-optical device, and FIG. 8 shows a cross-sectional structure of the electronic apparatus and the electro-optical device according to the line DD in FIG. The cross-sectional structures of the electronic apparatus and the electro-optical device according to the line AA in FIG. 7 are the same as those shown in FIG.

  In the previous embodiment shown in FIG. 1, the fixing structures 41 </ b> A are provided at the four corners of the second frame 9. The fixing structure 41 </ b> A is realized by fitting the claw member 42 provided in the housing 2 and the hole 44 provided in the second frame 9. In the electronic device 1 </ b> C of the present embodiment, the fixing structures 41 </ b> C are provided at the four corners of the second frame 9 as in the embodiment of FIG. 1. As shown in FIG. 8, the fixing structure 41 </ b> C is formed by a hole 56 provided in the housing 2 and a projecting piece 57 formed at the upper end of the side wall 9 b of the second frame 9.

  The projecting piece 57 is initially formed in a state of extending straight as indicated by a chain line in FIG. When attaching the second frame 9 to the housing 2, first, the electro-optical device 3 </ b> C is attached to the back surface of the housing 2 while inserting the straight projecting piece 57 into the hole 56 of the housing 2. After passing the entire piece 57 through the hole 56, the second frame 9 is fixed to the back surface of the housing 2 by bending the protruding piece 57 as indicated by an arrow E.

(Fourth embodiment of electro-optical device and electronic apparatus)
9 and 10 show still another embodiment of the electronic apparatus and the electro-optical device according to the invention. FIG. 9 shows a cross-sectional structure of the electronic apparatus and the electro-optical device, and FIG. 10 particularly shows the structure of the electro-optical device. In the previous embodiment shown in FIGS. 2 and 4, one end P1a of the sound guide path P1 is communicated with a part of the upper end surface of the first air chamber R1. On the other hand, in the electronic apparatus 1D of the present embodiment shown in FIGS. 9 and 10, one end P1a of the sound guide path P1 is communicated with a part of the side surface of the first air chamber R1. Other configurations are the same as those in the embodiment shown in FIG. 2, and the same member elements are denoted by the same reference numerals, and the description thereof is omitted. In the electronic apparatus 1D, the fixing structure for attaching the electro-optical device 3D to the housing 2 may be the fixing structure 41A in FIG. 3, the fixing structure 41B in FIG. 6, or The fixing structure 41C of FIG. 8 may be used.

(Fifth embodiment of electro-optical device and electronic apparatus)
FIG. 11 shows still another embodiment of the electronic apparatus and the electro-optical device according to the invention. In the electronic apparatus 1E according to this embodiment, the one end P1a of the sound guide path P1 is communicated with a part of the side surface of the first air chamber R1 as in the embodiment of FIG. In the embodiment of FIGS. 2 and 9, the partition wall 46 is provided on the bottom surface of the first frame 8 to limit the volume of the first air chamber R <b> 1 small. On the other hand, in the present embodiment shown in FIG. 11, the member element corresponding to the partition wall 46 is removed to increase the volume of the first air chamber R1. In the electronic apparatus 1E, the fixing structure for fixing the electro-optical device 3E to the housing 2 may be the fixing structure 41A in FIG. 3, the fixing structure 41B in FIG. The fixing structure 41C in FIG. 8 may be used.

(Seventh Embodiment of Electronic Device)
FIG. 12 shows a block diagram of an embodiment of an electronic apparatus according to the present invention. The electronic apparatus shown here includes a liquid crystal display device 61 and a control circuit 70 that controls the liquid crystal display device 61. The liquid crystal display device 61 includes a liquid crystal panel 71 and a drive circuit 72 composed of a semiconductor IC or the like. The control circuit 70 includes a display information output source 73, a display information processing circuit 74, a power supply circuit 76, and a timing generator 77.

  The display information output source 73 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. Have The display information output source 73 supplies display information to the display information processing circuit 74 in the form of an image signal or the like in a predetermined format based on various clock signals generated by the timing generator 77.

  The display information processing circuit 74 includes various 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 obtain image information thereof. Are supplied to the drive circuit 72 together with the clock signal CLK. The drive circuit 72 includes a scanning line drive circuit, a data line drive circuit, and an inspection circuit. The power supply circuit 76 supplies a predetermined voltage to each of the above components. The liquid crystal display device 61 can be configured by, for example, the liquid crystal display device 4 shown in FIG. In addition, the control circuit 70 is installed at an appropriate position in the housing 2 shown in FIG. 2, for example.

  Next, FIG. 13 shows a mobile phone which is an example of an electronic apparatus according to the invention. A cellular phone 80 shown here has a main body portion 81 and a display body portion 82 provided on the main body portion 81 so as to be opened and closed. A display device 83 configured by a liquid crystal display device or the like is disposed inside the display body portion 82, and various displays related to telephone communication can be visually recognized on the display body portion 82 on the display screen 84. Operation buttons 86 are arranged on the main body 81.

  An antenna 87 is attached to one end of the display body portion 82 so as to be extendable. A speaker (not shown) is disposed inside the receiver unit 88 provided at the upper part of the display body unit 82. In addition, a microphone (not shown) is built in the transmitter 89 provided at the lower end of the main body 81. A control unit for controlling the operation of the display device 83 is stored in the main body 81 or the display body unit 82 as a part of the control unit that controls the entire mobile phone or separately from the control unit. The

  The display device 83 can be configured by, for example, the liquid crystal display device 4 shown in FIG. Moreover, the housing | casing 2 of FIG. 2 can be used as the exterior case of the display body part 82. FIG. Further, the sound emitting hole P1b of FIG.

(Modification)
14 and 15 show a modification of the fixing structure for solidifying the electro-optical device to the housing. The electro-optical device and the case to be fixed may be the electro-optical device 3A and the case 2 shown in FIG. 1, or the electro-optical device 3B and the case 2 shown in FIG. 7 may be the electro-optical device 3C and the housing 2 shown in FIG. 7, the electro-optical device 3D and the housing 2 shown in FIG. 9, or the electro-optical device 3E and the housing 2 shown in FIG. There may be.

  In this modification, as shown in FIG. 14A and a cross-sectional view thereof, FIG. 14B, a bracket 63 that protrudes toward the inside of the casing 2 is provided on the casing 2 as a fixed member. The bracket 63 is provided with a through hole 64 having a square cross section. On the other hand, as shown in FIG. 15 (a), a hook 65 extending laterally is provided at the upper end of the side wall 9 a of the second frame 9. A hook 66, that is, a protruding shape for hooking is formed on the head of the hook 65.

  When the electro-optical device is attached to the housing, the hook 65 provided on the second frame 9 is fitted into the hole 64 of the bracket 63 of the housing 2 as shown in FIG. By such fitting of the hook 65 and the bracket 3, the second frame 9 is fixed to the housing 2 in a biased state. For this reason, even if vibration occurs in the second frame 9 and the housing 2, it is possible to prevent chatter noise from occurring between them.

(Other embodiments)
The present invention has been described with reference to the preferred embodiments. However, the present invention is not limited to the embodiments, and various modifications can be made within the scope of the invention described in the claims.
For example, in FIG. 2, instead of the liquid crystal display device 4, other display devices such as an EL device and a plasma display device can be used. Further, the speaker unit 6 shown in FIG. 2 is configured using the diaphragm 12 and the piezoelectric element 13, but the sounding body is not limited to such a speaker unit, and speaker units having various structures may be used as necessary. Can do.

  The electro-optical device according to the present invention is suitably used as a display device when performing various displays on a mobile phone, a portable information terminal, an IC recorder, and other electronic devices. The electronic device according to the present invention is used as a consumer device such as a mobile phone, a portable information terminal, an IC recorder, etc., a measuring instrument, or other industrial devices.

1 is a plan view illustrating an electro-optical device and an electronic apparatus according to an embodiment of the invention. It is sectional drawing according to the AA line of FIG. It is sectional drawing according to the BB line of FIG. FIG. 3 is a perspective view showing the electro-optical device shown in FIG. 2 in an exploded state. FIG. 10 is a plan view illustrating another embodiment of an electro-optical device and an electronic apparatus according to the invention. It is sectional drawing according to CC line of FIG. FIG. 10 is a plan view illustrating still another embodiment of the electro-optical device and the electronic apparatus according to the invention. It is sectional drawing according to the DD line | wire of FIG. FIG. 10 is a cross-sectional view illustrating still another embodiment of the electro-optical device and the electronic apparatus according to the invention. FIG. 10 is a perspective view showing the electro-optical device shown in FIG. 9 in an exploded state. FIG. 10 is a cross-sectional view illustrating still another embodiment of the electro-optical device and the electronic apparatus according to the invention. It is a block diagram which shows other embodiment of the electronic device which concerns on this invention. It is a perspective view which shows other embodiment of the electronic device which concerns on this invention. It is a figure which shows the member used as a part of an example of fixing structure. It is a figure which shows the member which comprises a fixing structure in cooperation with the member shown in FIG.

Explanation of symbols

1A, 1B, 1C. 1. Electronic equipment Housing (fixed member),
3A, 3B, 3C. Electro-optical device; 4. Liquid crystal display,
5. 5. Liquid crystal panel (electro-optical panel) Speaker unit (sound generator)
7). Lighting device, 8. First frame, 9. Second frame, 9a. Bottom wall, 9b. Side walls,
10. Air vents, 11. Frame, 12. Vibrator, 13. Piezoelectric element,
16. Protective sheet, 17a. First cushioning material, 17b. Second cushioning material, 18. Vents,
19. Conductive wire, 21. Light guide, 22. LED (light source), 26. A first substrate,
27. Second substrate, 28. Sealing material, 29a. A first translucent substrate,
29b. Second translucent substrate, 33. Overhang, 34. Driving IC, 35. Protrusion,
36. FPC, 37. Hole, 41A, 41B, 41C. Fixed structure, 42. Nails,
43. Flange, 44. Hole, 46. Partition, 51. Rail, 52. Flange,
56. Hole, 57. Protrusion, 63. Bracket, 64. Through hole, 65. hook,
66.鉤, 80. Mobile phones (electronic devices), K1, K2. Opening, P1. Sound path,
P1b. Sound emission hole, R1. First air chamber, R2. Second air chamber

Claims (13)

An electro-optic panel containing an electro-optic material;
A sounding body that is disposed on the back surface of the electro-optic panel and generates sound,
A first frame disposed between the electro-optical panel and the sounding body, holding the electro-optical panel and forming an air chamber for the sounding body;
And a second frame that is disposed on a rear surface of the sounding body and that houses the electro-optical panel, the first frame, and the sounding body and includes a fixing structure for fixing the sounding body to a fixed member. An electro-optical device. The electro-optical device according to claim 1 .
The second frame has a bottom wall and a side wall extending from the bottom wall, a portion facing the bottom wall is an opening formed by an end portion of the side wall, and the fixing structure is an opening of the side wall. An electro-optical device provided at a side end. The electro-optical device according to claim 1 or 2 ,
The sounding body is disposed in a position closer to the bottom wall than the electro-optical panel in the second frame,
The electro-optical device is characterized in that a display area of the electro-optical panel is exposed to the outside through the opening of the second frame. The electro-optical device according to any one of claims 1 to 3, wherein the electro-optical panel, the first frame, and the sounding body is sandwiched between the said fixation member and the second frame fixed An electro-optical device. Mari in the electro-optical device according to any one of claims 1 to 4, comprising a first frame convex portions or concave portions, the second frame is fitted with projections or recesses of the first frame An electro-optical device characterized by being fitted. The electro-optical device according to any one of claims 1 to 5, wherein the first frame is an electro-optical device characterized by having a sound-guiding path for guiding the sound generated by the sounding body. The electro-optical device according to any one of claims 1 to 6, wherein the fixed structure, the second frame of the second frame to said fixed member in a state of being biased to the fixation member An electro-optical device that is fixed. The electro-optical device according to any one of claims 1 to 7 ,
2. The electro-optical device according to claim 1, wherein the fixing structure is a hole that engages with a claw provided on a fixed member. The electro-optical device according to any one of claims 1 to 7 ,
The electro-optical device, wherein the fixing structure is a fastening structure including a screw. The electro-optical device according to any one of claims 1 to 7 ,
The electro-optical device, wherein the fixing structure is a flange fitted to a rail provided on a fixed member. The electro-optical device according to any one of claims 1 to 7 ,
2. The electro-optical device according to claim 1, wherein the fixing structure is a projecting piece that is bent after being inserted into a hole provided in the member to be fixed and is engaged with the member to be fixed. An electro-optical device comprising: an electro-optical device; and a fixed member to which the electro-optical device is attached, wherein the electro-optical device is the electro-optical device according to any one of claims 1 to 11. machine. 13. The electronic apparatus according to claim 12 , wherein the fixed member is an exterior case.

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