JP2009229965A - Electro-optical device and electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electro-optical device wherein members holding an electro-optical panel can be firmly engaged with each other, and an electronic apparatus. <P>SOLUTION: When an upper cover member 50 is put on a holding member 30 and they are engaged with each other in an electro-optical device 100, side walls 31 and 51 face each other in a direction orthogonal to an engaging direction D, and an engagement projection 55 formed on the side wall 51 is fitted to an engagement recess 35 formed in the side wall 31. In this state, the engagement projection 55 has a first engagement plate part 551 obliquely projecting in a direction opposite to the engaging direction D to the holding member 30 and a second engagement plate part 552 extending from a front end part of the first engagement plate part 551 in the direction opposite to the engaging direction D, and the second engagement plate part 552 is elastically brought into face contact with a recess bottom 351 of the engagement recess 35. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electro-optical device and an electronic apparatus in which an electro-optical panel is supported by a plurality of members that overlap each other.

  A display unit of an electronic device such as a mobile phone or a personal digital assistant (PDA) has a liquid crystal device including a transmissive or transflective liquid crystal panel, or an organic electroluminescence device including an organic electroluminescence element. An organic electroluminescence device including a luminescence panel is widely used. In such an electro-optical device, an electro-optical panel such as a liquid crystal panel or an organic electroluminescence panel is often overlaid with a metal upper cover member while being held inside the holding member. In the case of such a configuration, if the side walls on the side of the upper cover member facing each other in the direction orthogonal to the overlapping direction of the upper cover member and the holding member are engaged with each other, the mutual positioning can be performed.

  As such an engagement structure, for example, an engagement convex portion protruding obliquely toward the side wall of the holding member is formed on the side wall of the upper cover member, and the engagement convex portion has elasticity on the side wall of the holding member. There are proposed a structure in which an engaging concave portion that abuts or a structure in which an arc-shaped engaging convex portion that protrudes toward the side wall of the holding member is formed on the side wall of the upper cover member (for example, Patent Document 1). 2).

If this structure is applied, as shown in FIG. 7 (a), inside the engaging recess 35A formed on the side wall 31A of the holding member 30A is an engaging protrusion 55A that obliquely protrudes from the side wall 51A on the upper cover member 50A side. The side wall 51A of the upper cover member 50A and the side wall 31A of the holding member 30A can be engaged with each other only by being fitted to the side. Further, as shown in FIG. 7 (b), just by fitting the engaging convex portion 55B protruding in an arc shape from the side wall 51A of the upper cover member 50A into the engaging concave portion 35A formed on the side wall 30A of the holding member 30A, The side wall 51A of the upper cover member 50A and the side wall 3A of the holding member 30A can be engaged. 7 (a) and 7 (b) are devised by the present inventor for comparison with the present invention, and are not conventional examples.
Japanese Patent Laid-Open No. 5-80334 JP 2005-283826 A

  However, in the example shown in FIG. 7A, the tip of the engaging protrusion 55A is only in line contact with the recessed bottom 351A of the engaging recess 35A, and there is a problem that the engaging force is weak. In the example shown in FIG. 7B, the arc portion of the engaging convex portion 55B is only in line contact with the concave bottom portion 351A of the engaging concave portion 35A, and the engaging force is weak and the engaging convex portion 55B. There is a problem that it takes a lot of time and effort to process the shape into an arc shape.

  In view of the above problems, an object of the present invention is to provide an electro-optical device and an electronic apparatus capable of firmly engaging members holding an electro-optical panel.

  In order to solve the above-described problems, in the present invention, an electro-optical panel, a holding member that holds the electro-optical panel and has a side wall facing a side surface of the electro-optical panel, and the electric member with respect to the holding member. A cover member that engages from either the display surface side of the optical panel or the surface opposite to the display surface and that has a side wall disposed opposite to the side wall of the holding member. An engagement recess is formed on the side wall so that the concave bottom portion is directed toward the side wall of the cover member, and the side wall of the cover member protrudes toward the side wall of the holding member and fits into the engagement recess. The engagement projection is bent at the first engagement plate portion protruding from the side wall of the cover member into the engagement recess, and at the tip of the first engagement plate portion. The concave bottom has elasticity Characterized in that a second engaging plate portion for surface contact.

  An electro-optical device according to the present invention includes a holding member having a side wall facing a side surface of the electro-optical panel, and one of the display surface side of the electro-optical panel and the opposite side of the display surface with respect to the holding member. When the cover member is overlapped with the holding member, both side walls face each other in a direction perpendicular to the engaging direction (the overlapping direction of the cover member with respect to the holding member). And the engaging convex part formed in the side wall of the cover member fits into the engaging concave part formed in the side wall of the holding member. In this state, the second engaging plate portion of the engaging convex portion elastically contacts the concave bottom portion of the engaging concave portion, so that positioning in the direction orthogonal to the engaging direction of the cover member with respect to the holding member is performed. Here, since the second engaging plate portion of the engaging convex portion is in surface contact with the concave bottom portion of the engaging concave portion with elasticity, the engaging force between the holding member and the cover member is strong. Positioning in a direction orthogonal to the direction of engagement with the cover member can be reliably performed.

  In the present invention, the cover member and the holding member include at least two opposite sides of the cover member and the side wall of the holding member. It is preferable that the direction of the concave bottom portion of the engagement concave portion is reverse. If comprised in this way, a cover member and a holding member will be positioned reliably from the both sides orthogonal to an engagement direction.

  In the present invention, the first engagement plate portion protrudes obliquely from the side wall of the cover member into the engagement recess, and the concave bottom portion and the second engagement plate portion are formed on the cover member with respect to the holding member. It is preferable to be parallel to the engagement direction. With such a configuration, the engaging convex portion and the engaging concave portion can be easily formed.

  In the present invention, the first engagement plate portion protrudes obliquely from the side wall of the cover member in a direction opposite to the engagement direction of the cover member with respect to the holding member, and the second engagement plate portion is It is preferable that the tip end portion of the first engagement plate portion extends in a direction opposite to the engagement direction. With this configuration, when the cover member is overlapped and engaged with the holding member, the bent portion between the first engagement plate portion and the second engagement plate portion precedes and slides on the side wall of the holding member. Then, after the bent portion reaches the engagement recess, the engagement projection fits into the engagement recess after a while. For this reason, even if there is an edge at the tip of the second engagement plate portion, the engagement convex portion slides smoothly on the side wall of the holding member. Further, since the second engagement plate portion is parallel to the engagement direction, the front end surface of the second engagement plate portion is orthogonal to the engagement direction, so that the engagement convex portion fits into the engagement concave portion. At this time, the edge located on the cover member side at the tip of the second engagement plate portion is not caught by the edge of the engagement recess.

  In the present invention, it is preferable that an engagement hole is formed in the second engagement plate portion, and an engagement protrusion that fits into the engagement hole is formed in the concave bottom portion. If comprised in this way, since an engagement hole and an engagement protrusion function as a stopper with respect to a superimposition direction, positioning of a holding member and a cover member can be performed also in an engagement direction.

  In the present invention, it is preferable that the side wall of the holding member is formed with an inclined step portion where the first engagement plate portion is in surface contact with the concave bottom portion at a position adjacent to the engagement direction side. If comprised in this way, since a 1st engagement board part and an inclination step part function as a stopper with respect to an engagement direction, positioning of a holding member and a cover member can be performed also in an engagement direction.

  In the present invention, a resin-made holding member that holds the electro-optical panel inside, a metal upper cover member that is engaged with the resin-made holding member from the display surface side of the electro-optical panel, and the resin-made member When the holding member is provided with a metal lower cover member that engages from the opposite side of the display surface of the electro-optical panel with respect to the holding member, the resin holding member is the holding member, and the upper cover member and the A configuration in which one or both of the lower cover members is the cover member can be employed.

  The electro-optical device to which the present invention is applied is used to configure a display unit in electronic devices such as a mobile phone and an information portable terminal.

  Embodiments of the present invention will be described with reference to the drawings. In the drawings to be referred to in the following description, the scales are different for each layer and each member so that each layer and each member have a size that can be recognized on the drawing.

[Embodiment 1]
(overall structure)
FIG. 1 is an exploded perspective view schematically showing a configuration of an electro-optical device (liquid crystal device) to which the present invention is applied.

  In FIG. 1, an electro-optical device 100 of the present embodiment is generally an illuminating device 20 as a backlight device, and a transmissive or transflective liquid crystal panel 10 (electro-optical) disposed on the upper surface of the illuminating device 20. Panel), a resin-made holding member 30 that holds the liquid crystal panel 10 and the lighting device 20 inside, and a metal lower cover member that is arranged to overlap the lower side of the holding member 30 (the side opposite to the display surface). 40 and a metal upper cover member 50 that is arranged on the upper side (display surface side) of the holding member 30.

  The liquid crystal panel 10 has a rectangular planar shape, and an element substrate 11 in which a pixel electrode or the like is formed on a glass substrate, and a counter substrate 12 that is disposed to face the element substrate 11 with a predetermined gap therebetween. And a liquid crystal layer (not shown) held between the counter substrate 12 and the element substrate 11. In this embodiment, the counter substrate 12 is disposed on the display light emitting side, and the element substrate 11 is disposed on the lighting device 20 side. The counter substrate 12 is made of a glass substrate on which a common electrode and a color filter are formed. In the electro-optical device 100, the so-called fringe field switching (hereinafter referred to as FFS) method or in-plane switching (hereinafter referred to as IPS (hereinafter referred to as IPS)). In the case of adopting a method called In Plane Switching), the common electrode is formed on the element substrate 11 side.

  In the element substrate 11, the driving IC 14 is mounted on the upper surface of the protruding portion 110 from the edge of the counter substrate 12, and the flexible substrate 70 is connected to the end of the protruding portion 110. An upper polarizing plate 18 and the like are disposed on the upper surface of the liquid crystal panel 10, and a lower polarizing plate 17 and the like are disposed between the lower surface of the liquid crystal panel 10 and the light guide plate 21 of the lighting device 20.

  The illuminating device 20 includes a rectangular light guide plate 21 disposed so as to overlap the liquid crystal panel 10 and a light emitting element (not shown) made of a surface mount type LED. The flexible substrate 70 having one end connected to the liquid crystal panel 10 is a double-sided substrate, and light emitting elements and the like are mounted on the flexible substrate 70. The light guide plate 21 is a light-transmitting resin plate having substantially the same size as the counter substrate 12, and of the four side end surfaces, the side end surface on one end side where the element substrate 11 projects from the counter substrate 12 in the liquid crystal panel 10. Is the incident end face 210. In the light guide plate 21, the light incident from the incident end face 210 is emitted from the upper surface while traveling through the light guide plate 21. In this embodiment, a reflective sheet (not shown) is provided on the lower surface of the light guide plate 21. Z) are placed one on top of the other. There may be a case where an optical sheet such as a scattering plate is placed on the upper surface of the light guide plate 21, or an unevenness or a dot pattern for making the scattering property or luminance distribution uniform is formed on the light guide plate 21 itself.

  The holding member 30 has a square-shaped planar shape and includes four side walls 31 facing the side surface of the liquid crystal panel 10. Of the four side walls 31, a step portion 36 is formed inside the three side walls 31. On the step portion 36, the light guide plate 21, the lower polarizing plate 17, the liquid crystal panel 10, and the upper polarizing plate 18 are disposed in this order.

  The lower cover member 40 is formed by pressing a thin metal plate having a thickness of about 0.15 mm, such as a SUS plate, and has a rectangular box shape with an upper surface opened. The holding member 30 is held on the bottom plate portion 49 of the lower cover member 40.

  The upper cover member 50 is also formed by pressing a thin metal plate having a thickness of about 0.15 mm, such as a SUS plate, and has a rectangular box shape with an open bottom surface. In addition, a rectangular opening 530 that emits light emitted from the liquid crystal panel 10 is formed in the upper plate portion 53 of the upper cover member 50.

(Engagement structure of upper cover member 50 and holding member 30)
FIG. 2 is an explanatory diagram of an engagement structure between the upper cover member 50 and the holding member 30 in the electro-optical device 100 according to Embodiment 1 of the present invention. 2A shows a state before the upper cover member 50 overlaps the holding member 30, and FIG. 2B shows the upper cover member 50 superimposed on the holding member 30. The state after being engaged with each other is shown in a sectional view. Hereinafter, in describing the engagement direction of the upper cover member 50 with respect to the holding member 30, the upper cover member 50 is engaged with the holding member 30 from above, so that the upper cover member 50 is engaged with the holding member 30. The combined direction means downward as indicated by arrow D, and the opposite direction to the engaging direction means upward as indicated by arrow U.

  In the electro-optical device 100 according to the present embodiment, the lower cover member 40, the holding member 30, and the upper cover member 50 are stacked in the vertical direction, and the lower cover member 40, the holding member 30, and the upper cover member 50 are used to form a liquid crystal panel. 10 is held. In this state, the liquid crystal panel 10 is shielded by the lower cover member 40 and the upper cover member 50.

  In this configuration, in this embodiment, the side wall 51 of the upper cover member 50 and the side wall 31 of the holding member 30 are separated as described below with reference to FIGS. 1 and 2A and 2B. Engagement takes place. For this reason, when the upper cover member 50 is stacked on the holding member 30, the four side walls 51 of the upper cover member 50 respectively cover the outer sides of the four side walls 31 of the holding member 30. Each of the two side walls 51 is engaged with the four side walls 31 of the holding member 30 in the direction in which the upper cover member 50 is engaged with the holding member 30 (the direction indicated by the arrow D / the direction in which the upper cover member 50 is overlapped with the holding member 30). It faces in a direction orthogonal to the direction.

  Here, a plurality of engagement recesses 35 are formed on the four side walls 31 of the holding member 30 so that the concave bottom portion 351 faces the side wall 51 of the upper cover member 50. The side wall 31 is formed continuously from the middle position in the height direction to the lower end side. In the engagement recess 35, a step perpendicular to the engagement direction is located at a position adjacent to the recess bottom 351 on the side (upper side) opposite to the engagement direction of the upper cover member 50 with respect to the holding member 30. On the other hand, the engagement direction (lower side) of the upper cover member 50 with respect to the holding member 30 is in an open state with respect to the concave bottom portion 351. Further, in this embodiment, the concave bottom portion 351 of the engaging concave portion 35 is parallel to the engaging direction of the upper cover member 50 with respect to the holding member 30, and the concave bottom portion 351 and the stepped portion 353 are perpendicular to each other. In the engaging recess 35, steps perpendicular to the recessed bottom 351 are also formed on both the left and right sides orthogonal to the direction of engagement of the upper cover member 50 with the holding member 30.

  On the side wall 51 of the upper cover member 50, a leaf spring-like engagement convex portion 55 that protrudes toward the side wall 31 of the holding member 30 and fits into the engagement concave portion 35 is cut and raised. Therefore, the side wall 51 has an opening 54 where the engagement convex portion 55 is cut and raised.

  In this embodiment, the engaging convex portion 55 includes a first engaging plate portion 551 that protrudes from the side wall 51 of the upper cover member 50 into the engaging concave portion 35 and a second engagement that is bent at the tip of the first engaging plate portion 551. And a plywood portion 552. Here, the first engagement plate portion 551 projects obliquely in the opposite direction with respect to the engagement direction, and the second engagement plate portion 552 extends from the distal end portion of the first engagement plate portion 551 to the engagement direction. It extends in the opposite direction parallel to the engagement direction. Further, the distance at which the second engagement plate portion 552 is separated from the side wall 51 is set slightly larger than the depth dimension of the engagement recess 35.

  Such engagement protrusions 55 are formed on the four side walls 51 of the upper cover member 50 with the same structure, but of the four side walls 51, the opposite side walls 51 are engaging protrusions. The protruding direction of 55 is opposite. The engaging recesses 35 are formed on the four side walls 31 of the holding member 30 with the same structure. However, of the four side walls 31, the opposing side walls 31 have an opening direction of the engaging recess 35. Is the opposite direction.

  When the upper cover member 50 configured as described above is overlapped with the holding member 30, the bent portion 554 between the first engaging plate portion 551 and the second engaging plate portion 552 is slid on the side wall 31 in advance, and the bent portion is bent. After the portion 554 reaches the engagement recess 35, the engagement projection 55 enters the engagement recess 35 and is fitted after a while. As a result, the second engaging plate portion 552 of the engaging convex portion 55 comes into surface contact with the concave bottom portion 351 of the engaging concave portion 35 with elasticity. Such engagement occurs in any of the four side walls 51 of the upper cover member 50 and the four side walls 31 of the holding member 30. Therefore, positioning is performed between the upper cover member 50 and the holding member 30 in a direction perpendicular to the engaging direction (opposite direction of the side walls 31 and 51).

  The engaging recess 35 has steps perpendicular to the recessed bottom 351 on both the left and right sides perpendicular to the direction of engagement of the upper cover member 50 with the holding member 30. When the convex portion 55 is fitted in the engaging concave portion 35, the concave bottom portion 351 is positioned in the left-right direction, so that the left-right direction positioning is performed between the upper cover member 50 and the holding member 30.

(Main effects of this form)
As described above, in this embodiment, when the upper cover member 50 and the holding member 30 are overlapped, the side walls 31 and 51 face each other in a direction orthogonal to the engagement direction, and the engagement formed on the side wall 51 is formed. The convex part 55 fits into the engaging concave part 35 formed in the side wall 31. In this state, the second engagement plate portion 552 of the engagement convex portion 55 is elastically in contact with the concave bottom portion 351 of the engagement concave portion 35, so that the engagement direction between the upper cover member 50 and the holding member 30 is relative to the engagement direction. Positioning in the orthogonal direction. Here, since the second engaging plate portion 552 of the engaging convex portion 55 is in surface contact with the concave bottom portion 351 of the engaging concave portion 35 with elasticity, the upper cover member 50 is compared with the case of being in a line contact state. Since the engaging force between the upper cover member 50 and the holding member 30 is strong, positioning in the direction orthogonal to the engaging direction between the upper cover member 50 and the holding member 30 can be reliably performed. Such an engagement mechanism is performed in opposite directions on the side walls 31 and 51 facing each other in the upper cover member 50 and the holding member 30 and is urged from both sides by the engagement convex portion 55. For this reason, the upper cover member 50 and the holding member 30 are reliably positioned from both sides orthogonal to the engagement direction.

  Moreover, in the engagement convex part 55, the 1st engagement board part 551 protrudes diagonally from the side wall 51, and the 2nd engagement board part is linearly extended in parallel with the engagement direction from the front-end | tip part of this 1st engagement board part 551. With such a structure, the engaging protrusion 55 can be easily formed. Further, since the concave bottom portion 351 is parallel to the engaging direction in the engaging concave portion 35, the engaging concave portion 35 can be formed simultaneously when the holding member 30 is molded with resin.

  Furthermore, the first engagement plate portion 551 protrudes obliquely from the side wall 31 in the direction opposite to the engagement direction, and the second engagement plate portion 552 extends from the distal end portion of the first engagement plate portion 551 in the engagement direction. On the other hand, it extends in the opposite direction. For this reason, when the upper cover member 50 is stacked on the holding member 30, the bent portion 554 between the first engagement plate portion 551 and the second engagement plate portion 552 is slid on the side wall 31 in advance, and the bent portion 554. After reaching the engagement recess 35, the engagement protrusion 55 is fitted into the engagement recess after a while. For this reason, even if there is an edge at the tip of the second engagement plate portion 552, the engagement convex portion 55 slides smoothly on the side wall 31.

  Further, since the second engagement plate portion 552 is parallel to the engagement direction, the distal end surface of the second engagement plate portion 552 is orthogonal to the engagement direction, so that the engagement convex portion 55 is engaged. When fitting into the recess 35, the edge 553 located on the side wall 51 side at the tip of the second engagement plate portion 552 is not caught by the edge (step 353) of the engagement recess 35.

[Embodiment 2]
FIG. 3 is an explanatory diagram of an engagement structure between the upper cover member 50 and the holding member 30 in the electro-optical device 100 according to Embodiment 2 of the present invention. 3A shows a state before the upper cover member 50 overlaps the holding member 30, and FIG. 3B shows the upper cover member 50 superimposed on the holding member 30. The state after being engaged with each other is shown in a sectional view. Since the basic configuration of this embodiment is the same as that of Embodiment 1, common portions are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 1 and FIGS. 3A and 3B, also in the electro-optical device 100 of this embodiment, the lower cover member 40, the holding member 30, and the upper cover member 50 are in the vertical direction as in the first embodiment. The liquid crystal panel 10 is held by the lower cover member 40, the holding member 30, and the upper cover member 50. Further, when the upper cover member 50 is overlapped with the holding member 30, the four side walls 51 of the upper cover member 50 respectively cover the outer sides of the four side walls 31 of the holding member 30. Each of the side walls 51 faces the four side walls 31 of the holding member 30 in a direction orthogonal to the engagement direction.

  The four side walls 31 of the holding member 30 are formed with a plurality of engaging recesses 35 with the concave bottom portion 351 facing the side wall 51 of the upper cover member 50, while the side walls 51 of the upper cover member 50 hold A leaf spring-like engagement convex portion 55 that protrudes toward the side wall 31 of the member 30 and fits into the engagement concave portion 35 is cut and raised. The engaging convex portion 55 includes a first engaging plate portion 551 that protrudes from the side wall 51 of the upper cover member 50 into the engaging concave portion 35, and a second engaging plate portion 552 that is bent at the tip of the first engaging plate portion 551. It has. Here, the first engagement plate portion 551 projects obliquely in the opposite direction with respect to the engagement direction, and the second engagement plate portion 552 extends from the distal end portion of the first engagement plate portion 551 to the engagement direction. In the opposite direction, it extends parallel to the engagement direction. Therefore, when the upper cover member 50 is overlapped with the holding member 30, the engaging convex portion 55 enters and engages with the engaging concave portion 35. As a result, the second engaging plate portion 552 of the engaging convex portion 55 comes into surface contact with the concave bottom portion 351 of the engaging concave portion 35 with elasticity.

  In this embodiment, a circular engagement hole 556 is formed in the second engagement plate portion 552, and a round bar-shaped engagement protrusion 356 that fits into the engagement hole 556 is formed in the concave bottom portion 351. For this reason, since the engagement hole 556 and the engagement protrusion 356 function as a stopper with respect to the engagement direction of the holding member 30 and the upper cover member 50, the holding member 30 and the upper cover member also in the engagement direction. 50 can be positioned. Therefore, there is an advantage that a gap can be reliably ensured between the upper plate portion 53 of the upper cover member 50 and the driving IC 14 shown in FIG.

[Embodiment 3]
FIG. 4 is an explanatory diagram of an engagement structure between the upper cover member 50 and the holding member 30 in the electro-optical device 100 according to Embodiment 3 of the present invention. 4A shows a state before the upper cover member 50 overlaps the holding member 30, and FIG. 4B shows the upper cover member 50 superimposed on the holding member 30. FIG. The state after being engaged with each other is shown in a sectional view. Since the basic configuration of this embodiment is the same as that of Embodiment 1, common portions are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 1 and FIGS. 4A and 4B, also in the electro-optical device 100 of this embodiment, the lower cover member 40, the holding member 30, and the upper cover member 50 are arranged in the vertical direction as in the first embodiment. The liquid crystal panel 10 is held by the lower cover member 40, the holding member 30, and the upper cover member 50. Further, when the upper cover member 50 is overlapped with the holding member 30, the four side walls 51 of the upper cover member 50 respectively cover the outer sides of the four side walls 31 of the holding member 30. Each of the side walls 51 faces the four side walls 31 of the holding member 30 in a direction orthogonal to the engagement direction.

  The four side walls 31 of the holding member 30 are formed with a plurality of engaging recesses 35 with the concave bottom portion 351 facing the side wall 51 of the upper cover member 50, while the side walls 51 of the upper cover member 50 hold A leaf spring-like engagement convex portion 55 that protrudes toward the side wall 31 of the member 30 and fits into the engagement concave portion 35 is cut and raised. The engaging convex portion 55 includes a first engaging plate portion 551 that protrudes from the side wall 51 of the upper cover member 50 into the engaging concave portion 35, and a second engaging plate portion 552 that is bent at the tip of the first engaging plate portion 551. It has. Here, the first engagement plate portion 551 projects obliquely in the opposite direction with respect to the engagement direction, and the second engagement plate portion 552 extends from the distal end portion of the first engagement plate portion 551 to the engagement direction. In the opposite direction, it extends parallel to the engagement direction. Therefore, when the upper cover member 50 is overlapped with the holding member 30, the engaging convex portion 55 enters and engages with the engaging concave portion 35. As a result, the second engaging plate portion 552 of the engaging convex portion 55 comes into surface contact with the concave bottom portion 351 of the engaging concave portion 35 with elasticity.

  In this embodiment, the side wall 31 is formed with an inclined step portion 357 where the first engagement plate portion 351 comes into surface contact with the concave bottom portion 351 at a position adjacent to the engagement direction side. For this reason, the first engagement plate portion 551 and the inclined step portion 357 function as a stopper with respect to the engagement direction of the holding member 30 and the upper cover member 50. Positioning with the cover member 50 can be performed reliably. Therefore, there is an advantage that a gap can be reliably ensured between the upper plate portion 53 of the upper cover member 50 and the driving IC 14 shown in FIG.

[Embodiment 4]
In the first to third embodiments, the present invention is applied to engage the side wall 51 of the upper cover member 50 and the side wall 31 of the holding member 30 when the upper cover member 50 and the holding member 30 are overlapped. However, when the lower cover member 40 and the holding member 30 shown in FIG. 1 are overlapped, the side wall 41 of the lower cover member 40 and the side wall 31 of the holding member 30 may be engaged. In such a case, as shown by a dotted line in FIG. 1, an engagement protrusion similar to the engagement protrusion 55 described with reference to FIGS. 2 to 4 with respect to the side wall 41 of the lower cover member 40. 45 and the engagement protrusion 45 may be engaged with the engagement recess 35 formed on the side wall 31 of the holding member 30. In this case, since the engagement direction is upside down, the engagement convex portion 45 and the engagement concave portion 35 may be configured upside down with respect to the configuration described with reference to FIGS.

[Embodiment 5]
Next, referring to FIG. 5, the side wall 51 of the upper cover member 50 and the side wall 31 of the holding member 30 are engaged, and the side wall 41 of the lower cover member 40 and the side wall 31 of the holding member 30 are engaged. An example will be described.

  FIG. 5 is an explanatory diagram of an engagement structure between the upper cover member 50 and the holding member 30 and an engagement structure between the lower cover member 50 and the holding member 30 in the electro-optical device 100 according to the fifth embodiment of the invention. is there. 5A shows a state before the upper cover member 50 and the lower cover member 40 are overlapped with the holding member 30, and FIG. The state after the cover member 50 and the lower cover member 40 are overlapped and engaged with each other is shown in a sectional view. Since the basic configuration of this embodiment is the same as that of Embodiment 1, common portions are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIGS. 5A and 5B, in the electro-optical device 100 of this embodiment, the side wall 51 of the upper cover member 50 and the side wall 31 of the holding member 30 are engaged as in the first embodiment. Therefore, a plurality of engaging recesses 35 are formed on the side wall 31 of the holding member 30 so that the concave bottom portion 351 faces the side of the side wall 51 of the upper cover member 50, while the side wall 51 of the upper cover member 50 includes A leaf spring-like engagement convex portion 55 that protrudes toward the side wall 31 of the holding member 30 and fits into the engagement concave portion 35 is cut and raised.

  Further, two engaging recesses 35 are formed on the side wall 31 of the holding member 30, and the side wall 41 of the lower cover member 40 protrudes toward the side wall 31 of the holding member 30 so as to protrude downward. A leaf spring-like engagement convex portion 45 fitted into the engagement concave portion 35 is cut and raised. The engaging convex portion 45 also includes a first engaging plate portion 451 and a second engaging plate portion 452, and the second engaging plate portion 452 comes into surface contact with the concave bottom portion 351 of the engaging concave portion 35.

  Here, since the upper cover member 50 and the lower cover member 40 are opposite to each other in the direction of engagement with the holding member 30, the configuration of the lower engagement recess 35 has been described with reference to FIGS. The configuration (configuration of the upper engagement recess 35) is upside down, and the configuration of the engagement projection 45 is upside down from the configuration of the engagement projection 55 described with reference to FIGS.

  When configured in this manner, there is an advantage that both the upper cover member 50 and the lower cover member 40 can be reliably positioned with respect to the holding member 30.

[Other embodiments]
In the said embodiment, although the example which applied this invention when hold | maintaining the liquid crystal panel 10 by the lower cover member 40, the holding member 30, and the upper cover member 50 was demonstrated, the organic electroluminescent in which the organic electroluminescent element was comprised was comprised. Even in an organic electroluminescence device including a panel, the organic electroluminescence panel may be held by a plurality of members. Therefore, in the organic electroluminescence device, the present invention may be applied when engaging members holding the organic electroluminescence panel.

[Example of mounting on electronic equipment]
Next, an electronic apparatus to which the electro-optical device 100 according to the above-described embodiment is applied will be described. FIG. 6A shows a configuration of a mobile phone provided with the electro-optical device 100. A cellular phone 3000 includes a plurality of operation buttons 3001, scroll buttons 3002, and the electro-optical device 100 as a display unit. By operating the scroll button 3002, the screen displayed on the electro-optical device 100 is scrolled. FIG. 6B shows the configuration of a portable information terminal to which the electro-optical device 100 is applied. The information portable terminal 4000 includes a plurality of operation buttons 4001, a power switch 4002, and the electro-optical device 100 as a display unit. When the power switch 4002 is operated, various types of information such as an address book and a schedule book are displayed on the electro-optical device 100.

  As an electronic apparatus to which the electro-optical device 100 is applied, in addition to those shown in FIG. 6, a digital still camera, a liquid crystal television, a viewfinder type, a monitor direct-view type video tape recorder, a car navigation device, a pager, an electronic notebook, Examples include calculators, word processors, workstations, videophones, POS terminals, devices with touch panels, and the like. The electro-optical device 100 described above can be applied as a display unit of these various electronic devices.

1 is an exploded perspective view schematically showing a configuration of an electro-optical device (a liquid crystal display device) to which the present invention is applied. 6 is an explanatory diagram of an engagement structure between an upper cover member and a holding member in the electro-optical device according to the first embodiment of the invention. FIG. FIG. 10 is an explanatory diagram of an engagement structure between an upper cover member and a holding member in an electro-optical device according to a second embodiment of the invention. FIG. 10 is an explanatory diagram of an engagement structure between an upper cover member and a holding member in an electro-optical device according to a third embodiment of the invention. FIG. 10 is an explanatory diagram of an engagement structure of an upper cover member, a holding member, and a lower cover member in an electro-optical device according to a fifth embodiment of the invention. It is explanatory drawing of the electronic device using the electro-optical apparatus which concerns on this invention. FIG. 10 is an explanatory diagram of an engagement structure between an upper cover member and a holding member in an electro-optical device according to a comparative example of the invention.

Explanation of symbols

10..Liquid crystal panel (electro-optical panel), 20..Lighting device, 21..Light guide plate, 30..Holding member, 31..Side wall of holding member, 35..Engagement recess, 40..Lower cover member 41 .. Side wall of lower cover member, 50 .. Upper cover member, 51 .. Side wall of upper cover member, 55 .. Engaging convex part, 100 .. Electro-optical device, 351 .. Concave bottom part, 356. Engagement protrusion, 357 .. Inclined step, 551 .. First engagement plate, 552 .. Second engagement plate, 556 .. Engagement hole

Claims (8)

An electro-optic panel;
A holding member that holds the electro-optical panel and has a side wall that faces a side surface of the electro-optical panel;
A cover member having a side wall that is engaged with the holding member from either the display surface side of the electro-optical panel or the surface opposite to the display surface and is disposed opposite to the side wall of the holding member. And
An engagement recess is formed on the side wall of the holding member, with the concave bottom facing the side of the cover member.
On the side wall of the cover member is formed a leaf spring-like engagement convex portion that protrudes toward the side wall side of the holding member and fits into the engagement concave portion,
The engagement convex portion is bent at the front end of the first engagement plate portion protruding from the side wall of the cover member into the engagement concave portion, and is elastically brought into surface contact with the concave bottom portion. An electro-optical device comprising: a second engagement plate portion. The cover member and the holding member are provided with a side wall of the cover member and a side wall of the holding member on at least two opposite sides,
2. The electro-optical device according to claim 1, wherein the projecting direction of the engaging convex portion and the direction of the concave bottom portion of the engaging concave portion are opposite in the two sides. The first engagement plate portion protrudes obliquely from the side wall of the cover member into the engagement recess,
The electro-optical device according to claim 1, wherein the concave bottom portion and the second engagement plate portion are parallel to an engagement direction of the cover member with respect to the holding member.
The first engagement plate portion protrudes obliquely from the side wall of the cover member in the opposite direction with respect to the engagement direction of the cover member with respect to the holding member,
The said 2nd engagement board part is extended toward the reverse direction with respect to the said engagement direction from the front-end | tip part of the said 1st engagement board part, The Claim 1 thru | or 3 characterized by the above-mentioned. The electro-optical device described. An engagement hole is formed in the second engagement plate portion,
The electro-optical device according to claim 4, wherein an engagement protrusion that fits into the engagement hole is formed on the concave bottom portion.   5. The inclined step portion in which the first engagement plate portion is in surface contact with the concave bottom portion at a position adjacent to the engagement direction side with respect to the concave bottom portion is formed on the side wall of the holding member. Or the electro-optical device according to 5. A resin holding member that holds the electro-optical panel inside, a metal upper cover member that engages with the resin holding member from the display surface side of the electro-optical panel, and the resin holding member A metal lower cover member engaged from the opposite side of the display surface of the electro-optic panel,
The resin holding member is the holding member;
The electro-optical device according to claim 1, wherein one or both of the upper cover member and the lower cover member is the cover member.   An electronic apparatus comprising the electro-optical device according to claim 1.

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