JP2010243519A - Electro-optical device and electronic apparatus - Google Patents

Abstract

A structure of an electro-optical device capable of reducing the burden of quality control by reducing the number of parts without sacrificing various performances and reducing the manufacturing cost.
An electro-optical device 11 according to the present invention includes an electro-optical unit 3 having a display surface 1A, a circuit board 7 connected to the electro-optical unit, and disposed outside a plane range of the electro-optical unit. Supporting the metal frame 5 that directly or indirectly holds the electro-optic unit from the display surface side, the back surface portion 6A disposed on the opposite side of the display surface with respect to the electro-optic unit, and the circuit board A metal plate 6 integrally provided with a supporting portion 6B, and a metal cover 9 that covers the circuit board from the opposite side of the supporting portion and is fixed to both the metal frame, at least one of the back portion, and the supporting portion. And.
[Selection] Figure 2

Description

  The present invention relates to an electro-optical device and an electronic apparatus, and more particularly to a device structure in which an electro-optical panel is connected to a circuit board.

  An electro-optical device such as a liquid crystal display is used in various scenes as various display devices. In many cases, a circuit board is connected to the electro-optical panel, and an electronic component such as an IC or the like is mounted on the circuit board. A drive circuit for driving the electro-optical panel is formed by forming the wiring pattern.

  As a conventional electro-optical device, a liquid crystal display device having a structure in which a liquid crystal display panel and a circuit board 5 are arranged so as to overlap each other and accommodated in a metal case 3 is known (for example, Patent Document 1 below). reference).

  9 and 10, a liquid crystal display panel (not shown) having a display surface 1A and a resin holding frame for holding an electro-optic unit including a backlight, and a front side (with respect to the holding frame) By mounting from the display screen side), the metal frame 5 that holds the liquid crystal display panel from the front side is engaged, and the metal frame 5 is engaged with the metal frame 5 on the back side (the surface opposite to the display screen). There is also known a liquid crystal display device 10 including a heat radiating plate 6 made of aluminum and disposed on the surface.

  In the liquid crystal display device 10, a circuit board 7 connected to the liquid crystal display panel via an FPC (flexible wiring board) (not shown) is provided. The circuit board 7 is disposed on the outside of the plane range of the holding frame, and is mounted on a metal support plate 8 fixed in a protruding state with respect to the metal frame 5 or the heat radiating plate 6. Further, since it is necessary to cover the circuit board 7 with a conductor as a measure against EMI (Electro Magnetic Interference) of the liquid crystal display device, a metal cover 9 is provided to cover the circuit board 7 from the side opposite to the support plate 8. . The metal cover 9 is attached to the support plate 8, and the circuit board 7 is arranged inside a metal casing formed by the support plate 8 and the metal cover 9.

JP 2002-244108 A

  In the liquid crystal display device described in Patent Document 1 and the liquid crystal display device shown in FIGS. 9 and 10, the heat radiating plate 6 is made of heat radiating material such as aluminum in order to efficiently dissipate heat generated by the backlight. However, the heat radiating plate 6 cannot be thickened so as not to prevent the thinning of the main body portion on which the electro-optic unit is disposed. On the other hand, as shown in FIGS. 9 and 10, in order to support the circuit board 7 arranged outside the plane range of the electro-optic unit, a certain degree of support rigidity is required. Separately, a support plate 8 made of stainless steel or the like is attached to the metal frame 5.

  Therefore, in addition to the holding frame that houses the electro-optic unit (not shown), the metal frame 5, the heat radiating plate 6, the support plate 8, and the metal cover 9 are required, which increases the number of parts and complicates quality control. There is a problem that it is difficult to reduce the manufacturing cost.

  Therefore, the present invention solves the above-mentioned problems, and the problem is that the burden of quality control can be reduced by reducing the number of parts without sacrificing various performances, and at the same time, the manufacturing cost can be reduced. It is to realize the structure of the optical device.

  In view of such circumstances, the electro-optical device of the first invention includes an electro-optical unit having a display surface, a circuit board connected to the electro-optical unit and disposed outside a plane range of the electro-optical unit, A metal frame for directly or indirectly holding the electro-optic unit from the display surface side, a back surface portion disposed on the opposite side of the electro-optic unit from the display surface, and a support portion for supporting the circuit board And a metal cover that covers the circuit board from the opposite side of the support portion and is fixed to both the metal frame, at least one of the back portion, and the support portion.

  According to the present invention, the heat radiation plate and the support plate described above are formed by integrally forming the back plate portion disposed on the opposite side of the display surface with respect to the electro-optic unit and the support portion for supporting the circuit board. Can be integrated to reduce the number of components, and by fixing the metal cover covering the circuit board to both the metal frame and the support portion, the rigidity of the support portion can be supplemented by the metal cover. Therefore, even if the metal plate is not thickened to increase rigidity, or a high-rigidity material is not used at the expense of heat dissipation of the metal plate, the circuit board can be used for both the metal plate support and the metal cover. Can be supported. For this reason, while being able to ensure heat dissipation, without preventing thickness reduction of an apparatus, it becomes possible to reduce a number of parts and to reduce manufacturing cost.

  In the first aspect of the invention, it is preferable that the metal plate has a diaphragm deformation portion extending from the back surface portion to the support portion. According to this, the rigidity between the back surface portion and the support portion can be increased, thereby further reducing the thickness of the metal plate and fixing position between the metal cover and the metal frame or between the metal cover and the support portion. And the degree of freedom of the fixed structure can be increased.

  Moreover, it is preferable that the said metal plate has the said back part and the said support part refracted. As described above, the metal plate is refracted to further increase the rigidity of the metal plate.

  An electro-optical device according to a second aspect of the invention includes an electro-optical unit having a display surface, a circuit board connected to the electro-optical unit and disposed outside a plane range of the electro-optical unit, and the electro-optical unit. A metal frame integrally including a holding portion for directly or indirectly holding the display substrate from the display surface side and a support portion for supporting the circuit board, and disposed on the opposite side of the display surface with respect to the electro-optic unit. And a metal cover that covers the circuit board from the opposite side of the support portion and is fixed to at least one of the metal plate or the holding portion and the support portion. .

  According to the present invention, the metal frame includes the holding unit that holds the electro-optical unit directly or indirectly from the display surface side and the support unit that supports the circuit board. And the support plate can be integrated to reduce the number of components, and by fixing the metal cover covering the circuit board to both the metal plate and the support portion, the rigidity of the support portion can be supplemented by the metal cover. Therefore, the circuit board is supported by both the support portion of the metal frame and the metal cover without increasing the rigidity by increasing the thickness of the metal frame or without increasing the rigidity at the expense of the opening range of the metal frame. Therefore, the opening range can be secured without hindering the thinning of the apparatus, the number of parts can be reduced, and the manufacturing cost can be reduced.

  In the said 2nd invention, it is preferable that the said metal frame has a drawing deformation | transformation part ranging from the said holding | maintenance part to the said support part. According to this, the rigidity between the holding part and the support part can be increased, thereby reducing the thickness of the metal frame, the fixing position between the metal cover and the metal plate, or between the metal cover and the support part, The degree of freedom of the fixed structure can be increased.

  Moreover, it is preferable that the said holding | maintenance part and the said support part have refracted the said metal frame. As described above, the metal frame is refracted to further increase the rigidity of the metal plate.

  Furthermore, an electro-optical device according to a third aspect of the invention includes an electro-optical unit having a display surface, a circuit board connected to the electro-optical unit and disposed outside a plane range of the electro-optical unit, and the electro-optical unit. A metal frame integrally including a holding portion for directly or indirectly holding the display surface from the display surface side and a cover portion for covering the circuit board, and a back surface disposed on the opposite side of the display surface with respect to the electro-optic unit And a metal plate that integrally includes a support portion that supports the circuit board from the opposite side of the cover portion and the cover portion and is fixed to the cover portion.

  According to the present invention, the holding unit that directly or indirectly holds the electro-optical unit from the display surface side and the metal frame that integrally includes the cover unit that covers the circuit board are displayed on the electro-optical panel. The metal plate and the metal cover, the heat sink and the support plate are integrated with each other by using a metal plate that is integrally provided with a back portion disposed on the opposite side of the surface and a support portion that supports the circuit board. The number of points can be reduced, and the rigidity of the support portion can be supplemented by fixing the cover portion of the metal frame and the support portion of the metal plate. Therefore, it is not necessary to increase the rigidity by increasing the thickness of the metal frame, or without increasing the rigidity at the expense of the opening range of the metal frame, and further, without increasing the rigidity by increasing the thickness of the metal plate. Alternatively, the circuit board can be supported by both the cover portion of the metal frame and the support portion of the metal plate without using a highly rigid material at the expense of heat dissipation of the metal plate. For this reason, while being able to ensure heat dissipation, without preventing thickness reduction of an apparatus, it becomes possible to reduce a number of parts and to reduce manufacturing cost.

  In the third aspect of the invention, it is preferable that the metal frame has a diaphragm deformation portion extending from the holding portion to the cover portion. According to this, the rigidity between the holding part and the cover part in the metal frame can be increased. Moreover, it is preferable that the said metal plate has a drawing deformation | transformation part ranging from the said back part to the said support part. According to this, the rigidity between the back surface part and support part in a metal plate can be improved. And by these, the further thickness reduction of a metal plate, the fixing position of a metal cover, a metal frame, or a support part, and the freedom degree of a fixing structure can be raised.

  Further, it is preferable that the holding portion and the cover portion are refracted in the metal frame, and the back portion and the support portion are refracted in the metal plate. Thus, support rigidity can be further improved by the metal frame and the metal plate being refracted.

  An electro-optical device according to a fourth aspect of the invention includes an electro-optical unit having a display surface, a circuit board connected to the electro-optical unit and disposed outside a plane range of the electro-optical unit, and the electro-optical unit. A metal frame integrally including a holding portion for directly or indirectly holding the display substrate from the display surface side and a support portion for supporting the circuit board, and disposed on the opposite side of the display surface with respect to the electro-optic unit. A metal plate that integrally covers a circuit board that covers the circuit board from the opposite side of the back surface and the support and is fixed to the support.

  According to the present invention, the metal optical frame includes a holding unit that directly or indirectly holds the electro-optical unit from the display surface side and a support unit that supports the circuit board. By using a metal plate that is integrally provided with a cover portion that covers the back surface portion and the circuit board disposed on the opposite side of the display surface, the above-described metal frame and support plate, and heat sink and metal cover are each integrated. The number of points can be reduced, and the rigidity of the support portion can be supplemented by fixing the support portion of the metal frame and the cover portion of the metal plate. Therefore, it is not necessary to increase the rigidity by increasing the thickness of the metal frame, or without increasing the rigidity at the expense of the opening range of the metal frame, and further, without increasing the rigidity by increasing the thickness of the metal plate. Alternatively, the circuit board can be supported by both the support portion of the metal frame and the cover portion of the metal plate without using a highly rigid material at the expense of heat dissipation of the metal plate. For this reason, while being able to ensure heat dissipation, without preventing thickness reduction of an apparatus, it becomes possible to reduce a number of parts and to reduce manufacturing cost.

  In the fourth aspect of the invention, it is preferable that the metal frame has a diaphragm deformation portion extending from the holding portion to the support portion. According to this, the rigidity between the holding part and the support part in the metal frame can be increased. Moreover, it is preferable that the said metal plate has a diaphragm deformation | transformation part ranging from the said back part to the said cover part. According to this, the rigidity between the back surface part and cover part in a metal plate can be improved. And by these, the further thickness reduction of a metal plate, the fixing position of a metal cover, a metal frame, or a support part, and the freedom degree of a fixing structure can be raised.

  Further, it is preferable that the holding portion and the support portion are refracted in the metal frame, and the back portion and the cover portion are refracted in the metal plate. Thus, support rigidity can be further improved by the metal frame and the metal plate being refracted.

  Next, an electronic apparatus according to an aspect of the invention includes any one of the electro-optical devices described above and a control unit that controls the electro-optical device. Examples of such an electronic device include various electronic devices such as a mobile phone, a display monitor, a television receiver, and an electronic watch, and in particular, a portable electronic device and an in-vehicle display device that are easily subjected to external stress due to carrying. It is effective when used for

  According to the present invention, it is possible to reduce the number of parts without sacrificing various performances, thereby reducing the burden of quality control and producing an excellent effect that the manufacturing cost can be reduced.

FIG. 3 is a perspective view illustrating the electro-optical device according to the first embodiment as viewed from the back side. 1 is a longitudinal sectional view of an electro-optical device according to a first embodiment. FIG. 6 is a perspective view illustrating a state where an electro-optical device according to a second embodiment is viewed from the front side. FIG. 9 is a perspective view illustrating a state where an electro-optical device according to a third embodiment is viewed from the back side. FIG. 9 is a perspective view illustrating a state where an electro-optical device according to a fourth embodiment is viewed from the front side. FIG. 9 is a perspective view illustrating a state in which an electro-optical device according to a fifth embodiment is viewed from the front side. FIG. 10 is a longitudinal sectional view of an electro-optical device according to a sixth embodiment. FIG. 10 is a longitudinal sectional view of an electro-optical device according to a seventh embodiment. The perspective view which shows a mode that the conventional electro-optical apparatus was seen from the front side. The perspective view which shows a mode that the conventional electro-optical apparatus was seen from the back side. The perspective view which shows the external appearance of the electronic device carrying an electro-optical apparatus. The schematic block diagram which shows the display control system of an electronic device.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[First embodiment]
FIG. 1 is a perspective view showing the electro-optical device 11 according to the first embodiment of the present invention as viewed from the back side (the side opposite to the display surface), and FIG. 2 is a longitudinal sectional view of the device 11. This embodiment is the same as the conventional configuration described above with reference to FIGS. 9 and 10 in the basic configuration.

  The electro-optical device 11 includes a liquid crystal display panel 1 having a display surface 1A on one surface side (hereinafter simply referred to as “front side”), and a side opposite to the display surface 1A of the liquid crystal display panel 1 (hereinafter referred to as “front surface side”). And an electro-optic unit 3 having a backlight 2 arranged on the back side. The liquid crystal display panel 1 includes a panel body including substrates 1a and 1b, and a flexible wiring substrate (FPC) 1c connected to the panel body. The backlight 2 has a sidelight structure including a light source 2a such as an LED, a light guide plate 2b, and a reflection plate 2c. The electro-optical unit is not limited to a structure in which a panel structure having a light modulation function and an illumination structure having an illumination function are provided separately as in the illustrated example, but an organic EL display body, a plasma display panel, or the like As such, it may have an integrated structure having both functions.

  The electro-optical unit 3 is positioned and held by a holding frame 4 made of an insulator (resin) such as white polyethylene. The holding frame 4 is configured in a rectangular frame shape that can hold the rectangular electro-optical unit 3. A metal frame 5 is attached to the holding frame 4 from the front side. The metal frame 5 has an opening 5a that exposes the display surface 1A on the front side. The metal frame 5 has a frame-shaped holding portion 5b that holds the electro-optic unit 3 at the edge of the opening 5a, and includes a side wall portion 5c that is bent in the thickness direction on the back side. A plurality of opening-like engaging portions 5d are formed in the side wall portion 5c, and these engaging portions 5d are fitted with engaged portions 4d provided on the outer surface of the holding frame 4, thereby holding the holding frame. 4 and the metal frame 5 are held and fixed to each other.

  A metal plate 6 provided as a heat radiating plate is disposed on the back side of the holding frame 4. The metal plate 6 integrally includes a back surface portion 6 </ b> A disposed on the back surface side of the electro-optical unit 3 and a support portion 6 </ b> B provided so as to project outside the plane range of the electro-optical unit 3. Here, the fitting portions 6 a and 6 b of the metal plate 6 are refracted to the front side and introduced into the holding frame 4 and are held by engaging with the holding frame 4. The insertion portion 6a is a portion refracted in an L shape at the outer edge portion of the back surface portion 6A opposite to the support portion 6B, and the insertion portion 6b is folded after being refracted in the thickness direction on the support portion 6B side of the back surface portion 6A. It is the part that was. The fitting portion 6b is preferably configured to contact the mounting substrate of the light source 2a of the backlight 2 and receive heat generated by the light source 2a. Furthermore, the metal plate 6 has a refracting portion 6c at the boundary portion between the back surface portion 6A and the supporting portion 6B, and is refracted at an obtuse angle (about 80 to 135 degrees in the illustrated example) as a whole. Of course, the refraction angle of the refracting portion 6c is not particularly limited, and can be set to an appropriate angle, for example, 90 degrees, for example, depending on the mounting location on the electronic device.

  A circuit board 7 is supported and fixed on the support portion 6B, and the circuit board 7 is connected to the electro-optical unit 3. Specifically, the circuit board 7 is connected to the panel body via the flexible wiring board 1c. Side piece portions 6d and 6e bent in the thickness direction are provided on both sides in the width direction of the support portion 6B, and engaging portions including openings are provided on the side piece portions 6d and 6e. The circuit board 7 on the support 6B is covered with a metal cover 9. The metal cover 9 is provided with side piece portions 9a and 9b bent in the thickness direction on both sides in the width direction, and these side piece portions 9a and 9b are provided with claw-like engaged portions. The metal cover 9 is fixed to the support portion 6B by engaging the engaging portion and the engaged portion while the side piece portions 6d, 6e and the side piece portions 9a, 9b are overlapped. The support portion 6B and the metal cover 9 constitute a conductive case body that accommodates the circuit board 7, and measures against EMI caused by the circuit board 7 are thereby taken.

  Further, projecting piece portions 6f and 6g projecting toward the support portion 6B are provided on both sides in the width direction of the back surface portion 6A of the metal plate 6. These projecting piece portions 6f and 6g are configured to overlap with projecting piece portions 9c and 9d protruding from the edge of the metal cover 9 on the metal frame 5 side in the width direction, and are fixed by a set screw 9x or the like. Thus, since the metal cover 9 is fixed to both the support portion 6B and the back surface portion 6A, the support rigidity of the circuit board 7 with respect to the electro-optical unit 3 is enhanced by the support through the metal cover 9.

  In the present embodiment, as described above, the back surface portion 6A that planarly overlaps the electro-optic unit 3 on the metal plate 6 disposed on the opposite side of the display surface 1A of the electro-optic unit 3 and the planar range of the electro-optic unit 3 are included. Since the support portion 6B disposed on the outside is integrally provided, the number of parts is reduced and the assembling work is also reduced. Therefore, the management effort can be saved and the manufacturing cost can be reduced.

  In the present embodiment, the metal cover 9 covering the circuit board 7 is fixed not only to the support part 6B of the metal plate 6 but also to the back part 6A, so that the support rigidity of the circuit board 7 is increased by the support through the metal cover 9. Therefore, it is not necessary to increase the thickness of the metal plate 6 and a soft material such as aluminum having good heat dissipation can be used as it is. You can configure without doing.

  Further, even when the electro-optical device 11 is fixed to an electronic device or the like by the protruding pieces 6f and 6g on the metal plate 6, it can be fixed together with the protruding pieces 9c and 9d on the metal cover 9 side. There is no shortage of time rigidity.

  In the present embodiment, since the back surface portion 6A and the support portion 6B of the metal plate 6 are refracted as described above, the rigidity of the metal plate 6 (particularly the rigidity against deformation in the width direction) is increased at the refraction portion 6c. Therefore, in addition to the above effects, the support rigidity of the circuit board 7 can be further improved.

[Second Embodiment]
Next, the electro-optical device 12 according to the second embodiment of the invention will be described with reference to FIG. In this embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In the first embodiment described above, the metal cover 9 is fixed not only to the support portion 6B of the metal plate 6 but also to the back surface portion 6A. However, in the electro-optical device 12 of this embodiment, the metal cover 9 is attached to the metal plate 6. In addition to the support portion 6B, the metal frame 5 is fixed. The metal cover 9 has an end edge portion 9e protruding on the metal frame 5, and the end edge portion 9e is fixed to the holding portion 5b of the metal frame 5 on the circuit board 7 side by a fixing screw 9x or the like. In the illustrated example, the end edge portion 9e has a shape protruding on both sides in the width direction in order to increase the fixing area with respect to the metal frame 5 and increase the fixing force.

  In this embodiment, since the metal cover 9 is fixed to the support portion 6B of the metal plate 6 and the metal frame 5, the support rigidity of the circuit board 7 is enhanced by the support through the metal cover 9. In particular, the metal cover 9 is fixed to a metal frame 5 that is different from the metal plate 6 having the support portion 6B that inherently supports the circuit board 7 and that is disposed on the opposite side of the electro-optic unit 3 in the thickness direction. By doing so, the support burden can be favorably dispersed, so that the effect of improving the support rigidity can be further enhanced.

[Third Embodiment]
Next, the electro-optical device 13 according to the third embodiment will be described with reference to FIG. Also in the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In this embodiment, the structure is basically the same as that of the first embodiment, but a rib-like drawing portion 6h formed by drawing is provided in a range from the back surface portion 6A of the metal plate 6 to the support portion 6B. Is different. The drawing portion 6h is formed by partially punching a plate material over a range extending from the back surface portion 6A to the support portion 6B from the front surface side to the back surface side in the illustrated example. However, it may be formed by punching a plate material from the back side to the front side.

  In the present embodiment, the rigidity between the back surface portion 6A and the support portion 6B is increased by providing the metal plate 6 with the drawing portion 6h, so that the support rigidity of the circuit board 7 can be further improved. Note that the drawing portion 6h of the present embodiment can be provided in the second embodiment or each embodiment described later.

[Fourth Embodiment]
Next, an electro-optical device 14 according to a fourth embodiment of the invention will be described with reference to FIG. Also in the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In the present embodiment, the metal plate 6 is configured in the same manner as in the first embodiment, but the metal frame 5 includes a holding portion 5A that overlaps the electro-optic unit 3 in a plane and a planar range of the electro-optic unit 3. It is different in that a cover portion 5B projecting outward is integrally provided and the cover portion 5B covers the circuit board 7 supported by the support portion 6B of the metal plate 6. This cover portion 5B is fixed to the support portion 6B by the same engagement structure as in the first embodiment.

  In the present embodiment, the support portion 5A and the cover portion 5B are integrally provided on the metal frame 5, and the support portion 5B is fixed to the support portion 6B, whereby the support rigidity of the circuit board 7 is improved. The metal frame 5 has a refracting shape corresponding to the refracting shape of the metal plate 6, and includes a predetermined refracting portion between the holding portion 5A and the cover portion 5B. The refractive shape of the metal frame 5 also has an effect of improving the support rigidity of the circuit board 7.

[Fifth Embodiment]
Next, an electro-optical device 15 according to a fifth embodiment of the invention will be described with reference to FIG. Also in the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In the present embodiment, the protruding pieces 5d and 5e protruding from the side piece on the circuit board 7 side of the metal frame 5 and the protruding pieces 9f and 9g protruding on both sides in the width direction of the metal cover 9 are overlapped. It is fixed by a set screw 9x or the like. Thereby, the metal cover 9 is fixed not only to the support portion 6B but also to the metal frame 5 as in the second embodiment.

  In the present embodiment, the back surface portion 6A that overlaps the electro-optic unit 3 in a plane and the support portion 6B that is disposed outside the planar area of the electro-optic unit 3 are formed along substantially the same plane, and the metal plate 6 Is configured in a flat plate shape as a whole. In the present invention, the electro-optical unit 3 and the circuit board 7 are arranged on the same plane by being configured in this way, but such a configuration can be similarly applied to other embodiments.

[Sixth Embodiment]
Next, an electro-optical device 16 according to a sixth embodiment of the present invention will be described with reference to FIG. Also in the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In the present embodiment, the holding part 5A and the supporting part 5B are integrally provided on the metal frame 5, the circuit board 7 is supported by the supporting part 5B of the metal frame 5 without providing the supporting part on the metal plate 6, and the rear side The circuit board 7 is covered with a metal cover 9. The metal cover 9 is fixed to the support portion 5 </ b> B and the metal plate 6. However, the metal cover 9 may be fixed to the holding portion 5A.

  In this embodiment, the structure which provided the support part 6B in the metal plate 6 of 1st Embodiment was changed into the structure which provided the support part 5B in the metal frame 5. FIG. If comprised in this way, about the support rigidity of the circuit board 7, it will improve by the support via the metal cover 9 like 1st Embodiment fundamentally. Moreover, in this structure, since the support part 5B can be provided in the metal frame 5 which has higher rigidity than the metal plate 6 for the reason that it is generally not necessary to consider heat dissipation, the effect of improving the support rigidity is achieved. Can be further enhanced. However, the metal frame 5 has an opening 5a for exposing the display surface 1A, and increasing the thickness prevents the device 16 from being thinned, similar to the first embodiment. Therefore, since it is not always possible to make the configuration with sufficient rigidity, the supporting action via the metal cover 9 is also useful in this embodiment.

  In addition, the said structure of this embodiment can be similarly applied also to said 2nd, 3rd, 5th embodiment by giving the change similar to the change aspect with respect to 1st Embodiment.

[Seventh Embodiment]
Next, an electro-optical device 17 according to a seventh embodiment of the invention will be described with reference to FIG. Even in this embodiment, the same parts as those in the fourth embodiment are denoted by the same reference numerals, and description thereof will be omitted.

  The present embodiment is different from the fourth embodiment in that the holding portion 5A and the support portion 5B are integrally provided on the metal frame 5, and the back surface portion 6A and the cover portion 6B are integrally provided on the metal plate 6. Here, the circuit board 7 is supported by the support portion 5B and covered with the cover portion 6B. Further, the support portion 5B and the cover portion 6B are fixed to each other.

  Also in this embodiment, the effect of improving the support rigidity can be basically obtained as in the fourth embodiment. In this configuration, the support portion 5B can be provided on the metal frame 5 having higher rigidity than the metal plate 6 because, for example, it is generally not necessary to consider heat dissipation. Can be increased. However, the metal frame 5 has an opening 5a for exposing the display surface 1A, and increasing the thickness prevents the device 16 from being thinned, similar to the fourth embodiment. Therefore, since it is not always possible to achieve a configuration having sufficient rigidity, the support action by integrating the back surface portion 6A and the cover portion 6B in the metal plate 6 is also useful in this embodiment.

[Electronics]
Finally, an embodiment of an electronic device according to the present invention will be described with reference to FIGS. FIG. 11 is a schematic perspective view illustrating an example of an electronic apparatus in which the electro-optical device 11 according to this embodiment is mounted. The electro-optical device can be mounted with the other embodiments described above.

  An electronic device 200 shown in FIG. 11 is an in-vehicle car navigation system, and includes a main body 210 and a display unit 220 connected to the main body 210. The main body 210 is provided with an operation surface 211 provided with operation buttons and the like, and an introduction port 212 for a recording medium such as a DVD. The electro-optical device 11 is stored inside the display unit 220, and the display surface 1 </ b> A of the electro-optical device 11, that is, the display of the navigation image can be viewed on the display screen 220 a of the display unit 220. Yes.

  FIG. 12 is a schematic configuration diagram illustrating an overall configuration of a control system (display control system) for the electro-optical device 11 mounted on the electronic apparatus 200. The electronic device 200 shown here includes a display information output source 291, a display information processing circuit 292, a power supply circuit 293, a timing generator 294, and a light source control circuit 295 that supplies power to the backlight 2 that is a lighting unit. A display control circuit 290 including The electro-optical device 11 includes an electro-optical panel 1 having the above-described configuration, a drive circuit 1D that drives the panel 1, and a backlight 2 that illuminates the panel 1.

  The display information output source 291 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. The display information is supplied to the display information processing circuit 292 in the form of an image signal or the like of a predetermined format based on various clock signals generated by the timing generator 294.

  The display information processing circuit 292 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. Are supplied to the drive circuit 1D together with the clock signal CLK. The drive circuit 1D includes a scanning line drive circuit, a signal line drive circuit, and an inspection circuit. The power supply circuit 293 supplies a predetermined voltage to each of the above-described components.

  The light source control circuit 295 supplies power to the light source of the backlight 2 based on the voltage supplied from the power supply circuit 293, and controls the presence / absence of lighting of the light source and its luminance based on a predetermined control signal. ing.

  In addition to the car navigation apparatus shown in FIG. 11, examples of the electronic apparatus according to the present invention include a liquid crystal television, a mobile phone, an electronic notebook, a calculator, a workstation, a videophone, and a POS terminal. The electro-optical device according to the present invention can be used as a display unit of these various electronic devices. However, since the present invention has a feature that the support rigidity of the electro-optical device 11 is improved, in particular, a small portable electronic device such as a mobile phone, an electronic timepiece, a portable information terminal, etc. Effective when used in equipment.

  Note that the illumination device and the electro-optical device of the present invention are not limited to the illustrated examples described above, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10-17 ... Electro-optical device, 1 ... Liquid crystal display panel, 1A ... Display surface, 1D ... Drive circuit, 2 ... Back light, 3 ... Electro-optical unit, 4 ... Holding frame, 5 ... Metal frame, 6 ... Metal plate, 7 ... Circuit board, 9 ... Metal cover

Claims (15)

An electro-optic unit with a display surface;
A circuit board connected to the electro-optic unit and disposed outside a plane range of the electro-optic unit;
A metal frame for directly or indirectly holding the electro-optic unit from the display surface side;
A metal plate integrally provided with a back portion disposed on the opposite side of the display surface with respect to the electro-optic unit and a support portion for supporting the circuit board;
A metal cover that covers the circuit board from the opposite side of the support part and is fixed to both the metal frame, at least one of the back part, and the support part;
An electro-optical device comprising:   The electro-optical device according to claim 1, wherein the metal plate has a diaphragm deformation portion extending from the back surface portion to the support portion.   3. The electro-optical device according to claim 1, wherein the back surface portion and the support portion are refracted in the metal plate. An electro-optic unit with a display surface;
A circuit board connected to the electro-optic unit and disposed outside a plane range of the electro-optic unit;
A metal frame integrally provided with a holding portion for directly or indirectly holding the electro-optic unit from the display surface side and a support portion for supporting the circuit board;
A metal plate having a back surface portion disposed on the opposite side of the display surface with respect to the electro-optic unit;
A metal cover that covers the circuit board from the opposite side of the support part and is fixed to both the metal plate or the holding part and the support part;
An electro-optical device comprising:   The electro-optical device according to claim 4, wherein the metal frame has a diaphragm deformation portion extending from the holding portion to the support portion.   The electro-optical device according to claim 4, wherein the holding portion and the support portion are refracted in the metal frame. An electro-optic unit with a display surface;
A circuit board connected to the electro-optic unit and disposed outside a plane range of the electro-optic unit;
A metal frame that integrally includes a holding portion that directly or indirectly holds the electro-optic unit from the display surface side and a cover portion that covers the circuit board;
A metal plate integrally supporting a support portion fixed to the cover portion and supporting the circuit board from a back portion disposed on a side opposite to the display surface with respect to the electro-optic unit and a side opposite to the cover portion; ,
An electro-optical device comprising:   The electro-optical device according to claim 7, wherein the metal frame has a diaphragm deforming portion extending from the holding portion to the cover portion.   The electro-optical device according to claim 7, wherein the metal plate has a diaphragm deformation portion extending from the back surface portion to the support portion.   10. The electricity according to claim 7, wherein the holding part and the cover part are refracted in the metal frame, and the back part and the support part are refracted in the metal plate. Optical device. An electro-optic unit with a display surface;
A circuit board connected to the electro-optic unit and disposed outside a plane range of the electro-optic unit;
A metal frame that integrally includes a holding portion that holds the electro-optical unit directly or indirectly from the display surface side and a support portion that supports the circuit board;
A metal plate integrally provided with a cover part that covers the circuit board from the opposite side of the support part and a back part disposed on the opposite side of the display surface with respect to the electro-optic unit;
An electro-optical device comprising:   The electro-optical device according to claim 11, wherein the metal frame has a diaphragm deforming portion extending from the holding portion to the support portion.   The electro-optical device according to claim 11, wherein the metal plate has a diaphragm deforming portion extending from the back surface portion to the cover portion.   The electricity according to any one of claims 11 to 13, wherein the holding part and the support part are refracted in the metal frame, and the back part and the cover part are refracted in the metal plate. Optical device.   15. An electronic apparatus comprising: the electro-optical device according to claim 1; and a control unit that controls the electro-optical device.

Images