JP2011095449A - Housing case and electrooptical display module using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a housing case that increases a locking dimension by increasing deformation of a locking wall of a side wall due to pressure of a projection without increasing the height of the side wall, and an electrooptical display module using the same. <P>SOLUTION: In a housing case, an opening 21b formed in the side wall 23c of a bottom case (outer frame) is engaged with a projection 23d formed in the side wall 21a of an inner frame 23. The opening 21b is long in the longitudinal direction of the side wall 23c. In the locking wall 21d, a slit 21e is formed so that deformation of a position corresponding to the center part of the opening 21b of the side wall 21a in the longitudinal direction is larger than other parts. In place of the slit, the width of the locking wall of the position corresponding to the center part of the opening 21b in the longitudinal direction can be smaller than the other parts. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a storage case and an electro-optic display module using the storage case.
Specifically, the present invention relates to a storage case formed by fitting openings and projections formed on the side walls of the outer frame and the inner frame, respectively, and an electric optical display panel arranged in the storage case. The present invention relates to an optical display module.

Various electro-optical display devices such as a liquid crystal display device, an organic electroluminescence (EL) display device, an inorganic EL display device, a plasma display device, a light emitting diode (LED) display device, and a field emission display device are known. ing. These electro-optic display devices are mass-produced at a module manufacturing factory as an electro-optic display module in which various electro-optic display panels are housed in a housing case (housing), and the electro-optic display module is variously produced at an electronic equipment manufacturing factory. Embedded in electronic equipment. As these electro-optic display modules, those capable of displaying a non-rectangular shape such as a heart shape or a circle as shown in Patent Document 1 below are also known.

These electro-optic display modules have a configuration in which an electro-optic display panel is housed in a housing case created by fitting an outer frame and an inner frame. For example, in Patent Document 2 below, a liquid crystal display panel is placed on a resin inner frame on which a reflection sheet and a light guide plate are held, and a protrusion on the side wall of the inner frame is fitted into the opening of the bottom case to A liquid crystal display module having a frame locked to a bottom case is disclosed. Patent Document 3 below discloses a liquid crystal display module in which a liquid crystal display panel is sandwiched between an outer frame and a bottom case by fitting a protrusion on the side wall of the bottom case into an opening in the side wall of the outer frame. ing.

As described above, in the electro-optic display module, when the protrusion formed on the side wall of the outer frame or inner frame of the storage case is fitted into the opening, the locking wall of the side wall is pressed by the protrusion. The stiff walls need to be able to collapse or bend. In the fitting structure as described above, there is a clearance between the protrusion and the opening for ensuring assembly accuracy and maintaining the basic performance of the fitting portion. The clearance has a conflicting property that if the value is large, the workability is improved but the assembly accuracy is lowered, and if the value is small, the assembly accuracy is improved but the workability is lowered. Therefore, in the past, in order to achieve both workability and assembly accuracy, an intermediate value that can establish both workability and assembly accuracy was often used as the clearance value. Factors reduce both workability and assembly accuracy.

In order to solve such problems, Patent Document 4 listed below provides a flat display device of high quality while being thin and light by making the shape of the projection part a shape composed of a spherical surface and a vertical surface. An invention of a fitting structure is disclosed. Here, the fitting structure disclosed in the following Patent Document 4 will be described with reference to FIG. 10A is a perspective view of the protrusion of the frame disclosed in Patent Document 4 below, and FIG. 10B is a perspective view showing a state in which the protrusion of FIG. 10A is fitted in the hole of the bezel cover. 10C is a cross-sectional view taken along line XC-XC in FIG. 10B.
FIG. 10B is a sectional view taken along line XD-XD in FIG. 10B.

In this fitting structure, the protrusion 91 of the frame 90 has a shape composed of a spherical surface and a vertical surface, as shown in FIG. 10A. The cross-sectional shape of the protrusion 91 taken along the line XC-XC in FIG. 10B includes a substantially arc-shaped line 91b and a line 91a perpendicular to the surface on which the protrusion is formed, as shown in FIG. 10C. . Moreover, the cross-sectional shape of the XD-XD line | wire of FIG. 10B is FIG.
As shown in 0D, it is substantially arcuate. With this shape, the work clearance (the width of the locking wall) a in the direction of the arrow in FIG. 10C when fitting the protrusion 91 into the hole 93 of the bezel cover 92 is such that the protrusion 91 contacts the bezel cover 92. Therefore, the length from the end of the bezel cover 92 to the hole 93 substantially coincides. Accordingly, the work clearance is increased as compared with the conventional technique, and workability is improved.

Further, since the cross-sectional shape of the XD-XD line is substantially an arc shape, the protruding portion 91 having such a shape is used.
The work clearance b in the direction of the arrow in FIG. 10D at the time of fitting in the hole 93 of the bezel cover 92 substantially coincides with ½ of the length of the hole 93 and is larger than that of the conventional example. On the other hand, the assembly clearance c can be made smaller than the conventional one irrespective of the work clearance b. Therefore, according to the fitting structure disclosed in Patent Document 4 below, it is possible to improve both workability and assembly accuracy as compared with the prior art.

JP 2008-096818 A JP 2008-235136 A JP 2008-112663 A JP 2007-086518 A

According to the fitting structure disclosed in Patent Document 4, the work clearance becomes larger than that of the prior art, and the workability and the assembly accuracy can be improved. Can play. However, in recent years, the electro-optic display module has been significantly reduced in thickness due to the advancement of the technology of the electro-optic display device. For example, in the liquid crystal display module, the thickness has been reduced from 4 mm to 2 mm, for example, as the liquid crystal display panel and the backlight device have been made thinner. When the thickness of the electro-optic display module is reduced in this way, the height of the formation position of the protrusion on the side wall is lowered in order to secure the strength of the fitting portion of the outer frame and the inner frame of the storage case. As a result, the position of the opening is lowered. That is, when the thickness of the electro-optic display module is reduced, the height (thickness) of the side walls of the outer frame and the inner frame is also reduced, and a protrusion and an opening must be formed on such a low side wall.

In the fitting structure disclosed in Patent Document 4, it is necessary to provide a gradient in the protrusion of the fitting portion to remove the play in the height direction, and thus it is necessary to increase the width a of the locking wall of the side wall. In addition, since the shape of the opening of the fitting portion is rectangular, the deformable amount of the locking wall is the same in the central portion of the fitting portion and other portions. Therefore, when the fitting structure disclosed in Patent Document 4 is adopted, it is difficult to make the electro-optic display module thinner, and the central portion of the locking wall of the side wall is difficult to bend or fall down. Therefore, if it is attempted to fit the protrusion on the side wall into the opening while ensuring the conventional engagement dimensions, the locking wall on the side wall may remain deformed beyond the critical point of elastic deformation. In addition, if the engagement dimension is reduced, the fitting portion may be detached.

The present invention has been made to solve the above-described problems of the prior art, and without having to increase the width of the side wall locking wall, the deformability of the side wall locking wall due to the pressing of the protrusions is improved. It is an object of the present invention to provide a storage case that can be increased in size, can be increased in size, and can be thinned, and an electro-optic display module using the storage case.

In order to achieve the above object, the storage case of the present invention comprises an outer frame and an inner frame each having a side wall, a protrusion formed on the side wall of the inner frame, an opening formed on the side wall of the outer frame, A locking wall formed on a side wall of the outer frame for locking the projection when the projection is fitted into the opening, the opening extending in a length direction of the side wall of the outer frame. The locking wall is formed so that the deformability at a position corresponding to the central portion in the length direction of the opening is greater than that of the other portion. .

When the protrusions and the openings formed in the outer frame and the inner frame are fitted, the locking wall is curved by the pressing of the protrusions. In the storage case of the present invention, it corresponds to the central portion in the length direction of the opening. It is formed so that the deformability of the locking wall at the position is greater than that of other portions. Therefore, according to the storage case of the present invention, the locking wall of the side wall is easily bent or collapsed, so that a sufficient engagement dimension can be secured even if the height of the locking wall is low, and the outer frame and the inner frame can be easily obtained. It becomes possible to fit the opening and the protrusion formed in. In addition, although the opening thru | or protrusion formed in the outer frame and inner frame of this invention should just be formed in at least one place, in order to enlarge the fitting intensity | strength of an outer frame and an inner frame, it is better to provide in multiple places. Good.

Moreover, in the storage case of this invention, it is preferable that the width | variety of the position corresponding to the center part of the length direction of the said opening is smaller than the other part.

In the portion where the width of the locking wall, that is, the width in the direction perpendicular to the length direction of the opening is small, it becomes easier to bend or fall than the large portion. Therefore, according to the storage case of this invention, said effect comes to be show | played easily.

Further, in the storage case of the present invention, the opening has a convex shape on the locking wall side, and a width corresponding to a central portion in the length direction of the opening is wider than other portions. It can be.

If the shape of the opening is convex in plan view and the width of the position corresponding to the central part in the length direction of the opening is wider than the other part, the central part in the length direction of the opening The width of the locking wall at a position corresponding to is smaller than the other portions. Therefore, the above effects can be easily achieved by the storage case of the present invention. The convex portion of the opening may be curved or linear.

Moreover, in the storage case of this invention, the said protrusion is made into the round structure where the width | variety and height of the position corresponding to the center part of the length direction of the said opening are wider than other parts, and height is high. It is preferable.

According to the storage case of the present invention, a round structure (curved surface structure) in which the width and height of the protrusion corresponding to the central portion in the longitudinal direction of the opening is wider and higher than the other portions. Therefore, a storage case with improved workability and assembly accuracy can be obtained.

Further, in the storage case of the present invention, the locking wall is formed in a pair of cantilever shapes by dividing the position corresponding to the central portion in the length direction of the opening by a slit. Can do.

Assuming that the position corresponding to the central portion in the length direction of the opening is divided by a slit and formed in a pair of cantilever shapes, the position of the locking wall is the position corresponding to the central portion in the length direction of the opening. The locking wall is very curved or easily overturned. Therefore, according to the storage case of this invention, the said effect comes to be show | played notably.

Moreover, in the storage case of this invention, the said protrusion shall be formed with the convex part fitted to the said slit.

According to the storage case of the present invention, since the projections of the protrusions are fitted into the slits formed in the locking wall, the play in the length direction of the opening is reduced, and the assembly accuracy is further improved. In addition,
This effect is prominent particularly when the protrusion has a round structure in which the width and height of the position corresponding to the central portion in the longitudinal direction of the opening are wider and higher than the other portions.

Further, in the storage case of the present invention, the engaging wall may have a larger engaging dimension at a position corresponding to the central portion in the length direction of the opening than the other portions.

When the protrusion is fitted into the opening, the locking wall is curved. However, the locking wall has a large curve at a position where the engaging dimension is large, and the locking wall is small at a position where the engaging dimension is small. Also,
At a position where the engagement dimension is large, the fitting between the protrusion and the opening is difficult to come off. Therefore, according to the storage case of the present invention, the deformability of the position corresponding to the central portion in the length direction of the opening of the side wall of the locking wall is formed so as to be larger than the other portions. The engaging dimension of the position corresponding to the central portion in the length direction of the opening of the side wall of the locking wall can be made larger than the other part, and the fitting between the protrusion and the opening is difficult to come off. Become. In addition, the present invention can be applied not only in the case where the outer frame and the side walls of the inner frame are planar, but also in the case of a curved surface.

Moreover, in the storage case of this invention, the said locking wall is good also as a thing whose thickness of the center part of the length direction of the said opening is thinner than another part.

Even if the thickness of the central portion in the longitudinal direction of the opening of the side wall of the locking wall is thinner than the other part, this part is more easily curved or falls than the other part. Therefore, also in the storage case of the present invention,
The above effects can be easily achieved.

In the storage case of the present invention, the side wall of the outer frame and the side wall of the inner frame may be arcuate.

According to the storage case of the present invention, even if the side wall of the outer frame and the side wall of the inner frame are arcuate,
The above effects can be easily achieved.

Furthermore, in order to achieve the above object, the electro-optical display module of the present invention includes any one of the storage cases and an electro-optical display panel disposed in the storage case.

According to the electro-optical display module of the present invention, since the storage case has the above effects, an electro-optical display module that can be made thinner can be obtained.

In the electro-optic display module of the present invention, the electro-optic display panel is preferably a liquid crystal display panel or an organic EL display panel.

Among electro-optical display panels, many liquid crystal display panels and organic EL display panels are known to be thin. According to the electro-optic display module of the present invention, since the present invention is applied to such a thinned liquid crystal display panel and organic EL display panel, the above-described effect is remarkably exhibited.

1 is an exploded perspective view of a liquid crystal display module according to a first embodiment. 2A is a plan view of the liquid crystal display module according to the first embodiment with the outer frame removed, and FIG. 2B is a cross-sectional view taken along the line IIB-IIB in FIG. 2A. It is sectional drawing of the III-III line of FIG. 2A. 4A is an enlarged perspective view showing a fitting state of the inner frame and the bottom case according to the first embodiment, and FIG. 4B is an enlarged perspective view showing a fitting state of the bottom case and the outer frame. FIG. 5A is an enlarged perspective view showing a fitting state between the inner frame and the bottom case in the second embodiment, and FIG. 5B is an enlarged perspective view showing a fitting state between the inner frame and the bottom case in the third embodiment. It is an expansion perspective view which shows the fitting state of the inner frame and bottom case of 4th Embodiment. FIG. 7A is a perspective view showing the inner frame and the bottom case before fitting in the fifth embodiment, and FIG. 7B is a perspective view showing the inner frame and the bottom case after fitting in the fifth embodiment. 8A is an enlarged perspective view of the VIIIA portion of FIG. 7A, and FIG. 4B is an enlarged perspective view of the VIIIB portion of FIG. 7B. 9A is an enlarged perspective view of the IXA portion of FIG. 7A, and FIG. 9B is an enlarged perspective view of the IXB portion of FIG. 7B. 10A is a perspective view of a protrusion of a conventional frame, FIG. 10B is a perspective view showing a state in which the protrusion of FIG. 10A is fitted in the hole of the bezel cover, and FIG. 10C is an XC-XC of FIG. 10B. 10D is a cross-sectional view taken along line XD-XD in FIG. 10B.

Hereinafter, a case of a liquid crystal display module as an example of a storage case and an electro-optical display module using the storage case will be described with reference to the drawings for describing embodiments for carrying out the present invention. The present invention is not intended to be limited to what has been described herein, and the present invention can equally be applied to various modifications made without departing from the technical idea shown in the claims. It is. In addition, in each drawing used for the description in this specification, in order to make each layer and each member large enough to be recognized on the drawing,
Each layer and each member are displayed at different scales, and are not necessarily displayed in proportion to actual dimensions.

[First Embodiment]
A liquid crystal display module 10 according to a first embodiment of the present invention will be described with reference to FIGS. First
The liquid crystal display module 10 of the embodiment is accommodated by sandwiching the liquid crystal display panel 11 between the backlight unit 12 and the backlight unit 12 disposed on the back surface of the liquid crystal display panel 11, for example. An outer frame 13 is provided. As shown in FIGS. 2 and 3, the liquid crystal display panel 11 surrounds the liquid crystal layer 14, the array substrate 15 and the color filter substrate 16 sandwiching the liquid crystal layer 14, and the periphery of the liquid crystal layer 14 to prevent liquid crystal from leaking. It has a sealing material 17, a gate driver 18 that drives the liquid crystal display panel 11, and a source driver 19. The liquid crystal display panel 11 includes a first flexible printed wiring (FPC) board 20 for receiving various signals from an external control board (not shown) and supplying power.
Is connected.

As shown in FIGS. 1 to 3, in the backlight unit 12, a bottom case 21, a reflection sheet 22, and an inner frame 23 are superimposed from the back side of the liquid crystal display module 10. Opening 2 at the center of the inner frame 23
In 3a, a light guide plate 24 and, for example, three optical sheets 25 are disposed. The three optical sheets 25 are, from the back side, the first diffusion sheet 26, the prism sheet 27, and the second diffusion sheet 2.
It is eight. Then, the second FPC board 30 for the light source is adhered to the inner frame 23 with the first double-sided tape 31 having excellent thermal conductivity so that the LEDs 29 are opposed to the side surface that becomes the light incident surface of the light guide plate 24.

The bottom case 21 is formed by extruding a stainless steel plate. A white reflective sheet 22 is affixed thereto. The second FPC board 30 is provided with a plurality of LEDs 29 for emitting white light to the liquid crystal display panel 11. The side surface that becomes the light incident surface of the light guide plate 24 is processed to have unevenness to make the luminance of light incident from the LEDs uniform, and the light is condensed in a desired direction on the upper surface that becomes the light emitting surface. For this reason, an uneven surface treatment is applied. First and second diffusion sheet 26
, 28 are diffused so that the luminance is uniform, and the prism sheet 27 is for condensing light traveling in the X-axis direction in FIG. 1 in the Z-axis direction (liquid crystal display panel 11 side) in FIG. The extending portions 25a of the three optical sheets 26 to 28 are fitted into the recesses 23b of the inner frame 23, whereby the three optical sheets 26 to 28 are positioned.

The inner frame 23 is produced by injection molding of a synthetic resin material. As shown in FIGS. 1 and 4, the opening 21 b of the side wall 21 a of the bottom case 21 and the protrusion 23 d of the side wall 23 c of the inner frame 23.
And the bottom case 21 and the inner frame 23 are mechanically coupled. The liquid crystal display panel 11 is adhered to the inner frame 23 by three second double-sided tapes 32 as shown in FIG. The inner frame 23 has a frame shape having a large opening 23a through which light passes.

The outer frame 13 is produced, for example, by pressing a stainless plate. Outer frame 13
Is fitted to the bottom case 21 and sandwiches the liquid crystal display panel 11. Side wall 2 of bottom case 21
The bottom case 21 and the outer frame 13 are mechanically coupled to each other by fitting the protrusion 21 c of 1 a and the square hole 13 b of the side wall 13 a of the outer frame 13. As shown in FIG. 1, the outer frame 13 has a frame shape having a large opening 13c serving as a display window in the center. Also, as shown in FIG.
The first FPC board 20 and the second FPC board 30 extend to the back side of the liquid crystal display module 10, and the extending tip of the second FPC board 30 is electrically connected to the first FPC board 20. The second FPC board 30 is adhered to the bottom case 21 with a third double-sided tape 33.

With the above-described configuration, the light emitted from the LED 29 of the second FPC board 30 is diffused on the side surface of the light guide plate 24, reflected and diffused by the reflection sheet 22, and the light guide plate 24 increases the luminance in a predetermined direction. Diffused by the sheet 26, condensed in the display direction by the prism sheet 27, and second
The light is diffused by the diffusion sheet 28 and irradiated to the back surface of the liquid crystal display panel 11.

Next, the fitting state of the inner case 23 and the bottom case 21 shown in FIG. 4A and the fitting state of the bottom case 21 and the outer case 13 shown in FIG. 4B will be described in detail. In the example shown in FIG. 4A,
The inner frame 23 corresponds to the inner frame of the present invention, and the bottom case 21 corresponds to the outer frame of the present invention. Also, FIG.
In the example shown in B, the bottom case 21 corresponds to the inner frame of the present invention, and the outer frame 13 corresponds to the outer frame of the present invention.

4A is a perspective view showing the display surface side of the liquid crystal display module 10 facing down and the back surface side facing up in order to illustrate first and second fitting regions C1 and C2 described later in an easy-to-understand manner. is there.
Thereby, the arrow indicating the positive direction of the Z-axis is directed downward. 4A and 4B, the Z-axis indicates a direction perpendicular to the display surface of the liquid crystal display module 10, and the Z-axis direction indicates both positive and negative directions. The directions perpendicular to the display surface of the liquid crystal display module 10 are the X-axis direction and the Y-axis direction,
Here, the thickness direction of each side wall 13a, 21a, 23c is defined as the Y-axis direction.

As shown in FIG. 4A, the opening 21b of the side wall 21a of the bottom case 21 is horizontally long in the X-axis direction. The side wall 21a on the display surface side (the positive direction of the Z axis) of the liquid crystal display module 10 of the opening 21b, that is, the side into which the inner frame 23 is inserted is a latch that stops the fitting with the protrusion 23d of the inner frame 23 from being released. It is a wall 21d. The locking wall 21d is provided with a slit-shaped opening 21e, and the locking wall 21d is divided into two cantilevered first and second locking walls 21f and 21g. That is, the conventional locking wall has a doubly-supported beam shape, but the locking wall 21d of the bottom case 21 of the first embodiment has two cantilevered first and second locking walls 21f, Since the projection 23d of the inner frame 23 is fitted into the opening 21b of the side wall 21a of the bottom case 21, the first and second locking walls 21f and 21g are curved by the pressing of the projection 23d. Becomes larger than the conventional locking wall. Thereby, even when the locking wall is formed on the side wall 21a which is not so high, the dimension in the Y-axis direction to be locked, that is, the engagement dimension can be increased. That is, in the conventional structure, the structure of the protrusion of the inner frame is devised for the fitting between the inner frame and the outer frame, but in the structure of the present invention, the structure of the locking wall of the outer frame is changed. The mating is made easy by changing.

When the protrusion 23d of the inner frame 23 is fitted into the opening 21b of the side wall 21a of the bottom case 21,
The curvature of the first and second locking walls 21f and 21g is added to the curvature of the entire side wall 21a of the bottom case 21. Since the cantilever-shaped first and second locking walls 21f and 21g are more greatly curved toward the tip, as shown in FIG. 4A, the protrusion amount of the protrusion 23d of the inner frame 23, that is, the engagement dimension is the first and second It becomes large as it goes to the tip of the second locking walls 21f and 21g. C1 and C2 portions shown by cross-hatching in FIG. 4A indicate the fitting regions of the first and second locking walls 21f and 21g, and the dimensions of the cantilever tips of the first and second locking walls 21f and 21g. A1 is larger than the engaging dimension A2 of the fulcrum of the first and second locking walls 21f, 21g, and A1> A2. As described above, the locking surface 23e of the protrusion 23d has an arc shape so that the protrusion amount of the protrusion 23d changes with the curvature of the first and second locking walls 21f and 21g.

Further, a projection (rib) 23f that fits into the slit-like opening 21e of the bottom case 21 is formed on the projection 23d of the inner frame 23. The ribs 23f are reinforcing ribs that prevent damage to the projections 23d due to assembly / disassembly of the liquid crystal display module and impact, and have a positioning action in the X-axis direction. Thus, by providing the slit-shaped opening 21e in the locking wall 21d, it is possible to form the rib 23f having a reinforcing and positioning action. Since the inner frame 23 of the first embodiment is made by injection molding of a synthetic resin material, the rib 2
3f can be formed easily. If the inner frame 23 is made of sheet metal, the rib 23f can be formed by pressing or bending as an alternative to the rib 23f. Also, the pressing surface 23g opposite to the locking surface 23e of the protrusion 23d is a slope, and the locking wall 21d is pressed by the component of the slope when the inner frame 23 is inserted into the bottom case 21. Can do.

Furthermore, the opening 13b of the side wall 13a of the outer frame 13 is horizontally long in the X-axis direction as shown in FIG. 4B. The side wall 13a on the back side of the liquid crystal display module 10 of the opening 13b (in the negative direction of the Z-axis), that is, the side into which the bottom case 21 is inserted, is a locking wall that stops the engagement with the protrusion 21c of the bottom case 21. 13d. The shape of the opening 13b of the side wall 13a on the side of the locking wall 13d in a plan view is a convex arc surface on the side of the locking wall 13d. Thus, the locking wall 13d
The dimension B1 in the center in the Z-axis direction is smaller than the dimension B2 at the end, that is, the locking wall 13
The width of the center part of d is smaller than the width of the end part. For this reason, the deformability on the center side of the locking wall 13d is greater than that of a conventional locking wall having the same width. That is, the locking wall 13d is easily deformed. Thereby, the dimension in the Y-axis direction to be locked, that is, the engagement dimension can be increased without increasing the height of the side wall. Moreover, since the dimension of the center part and edge part of a Z-axis direction differs, it also becomes positioning in a X-axis direction. The locking wall 13d
Is not an arc surface but may be a polysurface (the edge of the opening 13b is not an arc but a polygon).

When the protrusion 21c of the bottom case 21 is fitted into the opening 13b of the outer frame 13, the locking wall 13d is bent to the curve of the entire side wall 13a of the outer frame 13. Since the doubly-supported locking wall 13d is curved more toward the center, as shown in FIG. 4B, the protruding amount of the protrusion 21c of the bottom case 21, that is, the engagement dimension is increased toward the center of the locking wall 13d. It has become. C3 shown by cross-hatching in FIG. 4B shows the fitting region of the locking wall 13d, and the engaging dimension A3 of the both-end supported beam of the engaging wall 13d is from the engaging dimension A4 of the fulcrum of the both-end supporting beam of the engaging wall 13d. Is bigger, A3
> A4. In this way, the protrusion 21c of the bottom case 21 with the curve of the locking wall 13d.
The locking surface 21h of the protrusion 21c has an arc so that the amount of protrusion changes. Also, protrusion 2
The pressing surface 21i opposite to the locking surface 21h of 1c is a slope, and the bottom case 21 is attached to the outer frame 1.
The locking wall 13d can be pressed by the component force of the inclined surface when inserted into 3.

[Second Embodiment]
Next, the liquid crystal display module of 2nd Embodiment is demonstrated using FIG. 5A. FIG. 5A shows the first
This corresponds to FIG. 4A in the liquid crystal display module of the embodiment. The main difference between the configuration of the liquid crystal display module of the second embodiment and the liquid crystal display module of the first embodiment is the shape of the locking wall. Therefore, in the liquid crystal display module of the second embodiment, other parts are provided. The detailed description of the configuration is omitted.

As shown in FIG. 5A, the opening 40b on the side wall 40a of the inner frame 40 of the liquid crystal display module of the second embodiment is rectangular as in the case of the conventional example. However, the locking wall 4 of the second embodiment.
0c is formed such that the thickness of the locking wall 40c gradually decreases toward the center, as the outer surface is cut away by a cylindrical blade such as an end mill. That is, FIG.
As shown in FIG. 5, the thickness B3 of the central portion is smaller than the thickness B4 of the end portion. Therefore, as in the case of the locking wall 13d of the outer frame 13 of the first embodiment, compared to the case of the conventional locking wall having the same locking wall thickness, the center side of the locking wall 40c. The deformability of is increasing. Thereby, the dimension in the Y-axis direction to be locked, that is, the engagement dimension can be increased without increasing the height of the side wall. Since the inner frame 40 is manufactured by injection molding using a synthetic resin material, the thickness of the locking wall 40c can be easily changed.

As shown in FIG. 5A, the side wall 41a of the bottom case 41 of the liquid crystal display module of the second embodiment.
The locking surface 41c of the protrusion 41b has an arc so that the protrusion amount of the protrusion 41b changes as the locking wall 40c curves. The engagement region of the locking wall 40c in the second embodiment is a combination of a region C4 where the locking surface 41c and the locking surface 41c are in contact with a region C5 where the locking surface 41c exceeds the locking surface 41c. It becomes an area. The engaging dimension A5 at the center of the both-end supported beam of the locking wall 40c is larger than the engaging dimension A6 of the fulcrum of the both-end supported beam of the engaging wall 40c. Also, the protrusion 41b
The pressing surface 41d opposite to the locking surface 41c is an inclined surface, and the locking wall 40c can be pressed by the component force of the inclined surface when the inner frame 40 is inserted into the bottom case 41. Thus, the curvature of the locking wall can be increased by changing the thickness of the central portion of the locking wall 40c. In the example shown in FIG. 5A, the bottom case 41 corresponds to the inner frame of the present invention, and the inner frame 40 corresponds to the outer frame of the present invention.

[Third Embodiment]
Next, the liquid crystal display module of 3rd Embodiment is demonstrated using FIG. 5B. FIG. 5B shows the first
This corresponds to FIG. 4A in the liquid crystal display module of the embodiment. The main difference between the configuration of the liquid crystal display module of the third embodiment and the liquid crystal display module of the first embodiment is the shape of the locking wall. Therefore, in the liquid crystal display module of the third embodiment, other parts are provided. The detailed description of the configuration is omitted.

As shown in FIG. 5B, the opening 50b on the side wall 50a of the inner frame 50 of the liquid crystal display module of the third embodiment is rectangular as in the conventional case. However, a diamond-shaped opening 50d is formed in the locking wall 50c of the third embodiment. Therefore, as in the case of the locking wall 13d of the outer frame 13 of the first embodiment, the deformability on the center side of the locking wall 50c compared to the conventional locking wall having the same locking wall width. Is getting bigger. Thereby, the dimension in the Y-axis direction to be locked, that is, the engagement dimension can be increased without increasing the height of the side wall 50a. The inner frame 50 is manufactured by injection molding using a synthetic resin material. However, even if the inner frame 50 is made of sheet metal, the rhomboid opening 50d can be easily formed.

The protrusion 51b of the side wall 51a of the bottom case 51 of the liquid crystal display module of the third embodiment is the second
It has the same shape as the protrusion 41b of the embodiment. As shown in FIG. 5B, in the fitting region C6 of the locking wall 50c in the third embodiment, the engagement dimension A7 of the center of the both ends of the locking wall 50c is the relationship of the fulcrum of the both ends of the locking wall 50c. It is larger than the dimension A8, and A7> A8. Thus, the deformability of the locking wall 50c can also be increased by forming the diamond-shaped opening 50d in the locking wall 50c.

As described above, in order to increase the deformability of the locking wall in the form of a doubly supported beam, the locking wall 13d of the first embodiment is used.
A configuration for changing the dimension of the locking wall in the Z-axis direction as shown in FIG. 4B, a configuration for changing the thickness of the locking wall as in the locking wall 40c of the second embodiment (see FIG. 5A), The structure which provided opening in the inside of a locking wall like the locking wall 50c (refer FIG. 5B) of 3rd Embodiment was shown. Each of these configurations is an example of a configuration in which the width and thickness of the central portion of the locking wall are reduced, and the present invention may reduce the width and thickness of the central portion by other configurations. Further, the locking wall 21d of the first embodiment.
As shown in FIG. 4A, a configuration in which a slit-like opening is provided in the central portion of the locking wall to divide the locking wall into two cantilever-like locking walls is also possible. It is one of the configurations that reduce the thickness to the ultimate “0”.

[Fourth Embodiment]
Moreover, you may combine the above-mentioned structure as a structure which makes the cross-sectional area of a locking wall small. The fourth embodiment shown in FIG. 6 exemplifies the combination. As shown in FIG. 6, the locking wall 60c of the opening 60b of the side wall 60a of the inner frame 60 of the liquid crystal display module of the fourth embodiment is the center of the locking wall 60c as shown in FIG. 4B of the first embodiment. The width in the Z-axis direction is reduced, and as shown in FIG. 4A of the first embodiment, a slit-shaped opening 60d is provided at the center of the locking wall 60c, so that the locking wall 60c has two cantilever-like shapes. The first and second locking walls 60e and 60f are divided. Thereby, the deformability of the center part of the locking wall 60c becomes larger. That is, the difference between the engagement dimension A9 at the center of the locking wall 60c shown in FIG. 6 and the engagement dimension A10 at the end becomes larger. In addition, the structure of the protrusion 61b of the bottom case 61 of 4th Embodiment is the protrusion 21c of FIG. 4B.
And the projection 23d of FIG. 4A are combined, and detailed description of the projection 61b is omitted.

[Fifth Embodiment]
Next, the liquid crystal display module of 5th Embodiment is demonstrated using FIGS. The fifth embodiment is an example in which the fitting structure of the first embodiment is applied to a liquid crystal display module having an arcuate inner frame and a bottom case. Accordingly, only the inner frame and the bottom case will be described here with reference to the drawings. As shown in Patent Document 1, the electro-optic display panel can be non-rectangular. Although not shown, the liquid crystal display panel used in the liquid crystal display module of the fifth embodiment has an arc shape on the upper side of the display surface, wiring on the lower side of the display surface, and connection terminals for driver ICs and external controllers. In order to be square. In accordance with the shape of the liquid crystal display panel, the inner frame 70 and the bottom case 71 also have an arc shape on the upper side of the display surface as shown in FIG. 7A. Although components other than the inner frame 70 and the bottom case 71 are not shown, they have the same configuration as that of the liquid crystal display module of the first embodiment except for the shape.

As shown in FIG. 7A, the liquid crystal display module of the fifth embodiment includes two first protrusions 70b near both ends of the arc portion of the side wall 70a of the inner frame 70, and one second protrusion 70c in the center of the arc portion. Is formed. Further, two first openings 7 are provided in the vicinity of both ends of the arc portion of the side wall 71a of the bottom case 71.
One second opening 71c is formed at the center of 1b and the arc portion. That is, the liquid crystal display module according to the fifth embodiment has two first fittings in which the first protrusion 70b and the first opening 71b are fitted.
It has a fitting part 72 (one is not shown) and one second fitting part 73 into which the second projection 70c and the second opening 71c are fitted. The 1st fitting part 72 is the structure similar to the fitting part (refer FIG. 4B) of the opening 13b of the outer frame 13 and the protrusion 21c of the bottom case 21 of 1st Embodiment, and the 2nd fitting part 73.
Has the same configuration as the fitting portion (see FIG. 4A) of the opening 21b of the bottom case 21 and the projection 23d of the inner frame 23 of the first embodiment. In this example, the bottom case 71 corresponds to the inner frame of the present invention, and the inner frame 70 corresponds to the outer frame of the present invention.

As shown in FIG. 8A, the first locking wall 71d on the first opening 71b side of the bottom case 71 has a width in the Z-axis direction as in the case of the locking wall 13d of the outer frame 13 of the first embodiment. It becomes narrower toward the center. That is, the central width B5 in the Z-axis direction is smaller than the width B6 in the Z-axis direction at the end. This increases the deformability of the center of the first locking wall 71d. Accordingly, the dimension in the Y-axis direction at the center of the first locking surface 70d of the first protrusion 70b of the inner frame 70 is increased. Therefore, the engaging dimension A11 at the center of the first protrusion 70b is larger than the engaging dimension A12 at the end. In this way, even in a liquid crystal display module whose side wall has an arcuate shape, the width in the Z-axis direction at the center of the locking wall can be reduced and the deformability at the center can be increased.

And especially this structure, when the electro-optic display panel as shown in this embodiment is non-rectangular,
Specifically, an optimum structure is obtained at the boundary between the arc shape and the rectangular shape when a part of the arc shape is formed, that is, the boundary between the curved portion and the straight portion. That is, if the side wall is bent and the side wall is a boundary, it is difficult to secure the engagement dimension of the first protrusion 70b shown in FIG. 8A, and the same end dimension A12 is the same. It is difficult to process. However, with the structure of the present invention, even if the engagement dimension of the first projection 70b is small and the engagement dimension is not uniform, a strong fitting can be achieved.

As shown in FIGS. 7 and 9A, the side wall 71a of the bottom case 71 is provided with a second opening 71c, and the second locking wall 71e has two cantilever-shaped firsts by slit-like openings 71f. 3 and the fourth locking walls 71g and 71h. Thereby, the deformability of the center of the 2nd locking wall 71e becomes large. The third and fourth locking walls 71g and 71h are slightly bent inward. In addition, first and second guides 71i and 71j that slide substantially in a plane with the pressing surface 70e of the inner frame 70 are formed on the third and fourth locking walls 71g and 71h, respectively, by bending.

The second protrusion 70c of the inner frame 70 is not formed with a protrusion protruding from the side wall 70a.
The first and second recesses 70f and 70g for accommodating the third and fourth locking walls 71g and 71h formed on the side wall 71a of the bottom case 71 are formed, and thereby the first and second recesses are simultaneously formed.
A second protrusion 70c having locking surfaces 70i and 70j is formed. The first and second locking surfaces 70i and 70j have a dimension in the Y-axis direction that increases toward the center of the second locking wall 71e. That is, the engagement dimension is large on the center side of the third and fourth locking walls 71g and 71h. In addition, ribs (projections) 70k that fit into the slit-shaped openings 71f are formed on the side walls 70a of the inner frame 70 in order to reinforce the second protrusions 70c and to position the X-axis direction. With such a configuration, since the third and fourth locking walls 71g and 71h are bent inward, the third and fourth locking walls 71g and 71h, the second protrusion 70c and the rib 70k are formed on the side wall 71.
Since it can be prevented from projecting from a, a miniaturized liquid crystal display module can be obtained. Thus, even in a liquid crystal display module having a circular side wall, a slit-shaped opening is provided in the center of the locking wall, and the locking wall is divided into two cantilevered locking walls. Deformability can be increased.

In particular, this structure is optimal when the electro-optic display panel as shown in the present embodiment is non-rectangular, specifically when it is arcuate (that is, when the side walls are bent). In other words, the slit-like opening 71f of the second locking wall 71e and the rib 70k fitted to the second locking wall 71e can be aligned when the bottom case 71 and the inner frame 70 are fitted. Will be improved. Therefore, workability is greatly improved by providing at least one fitting structure of this configuration on the arc-shaped side wall.

In each of the above embodiments, the case of a liquid crystal display module as an example of an electro-optic display module has been described as an example.
The present invention is also applicable to an electro-optic display module using a known electro-optic display panel such as a plasma display panel, an LED display panel, a field emission display panel, or the like.

10: Liquid crystal display module 11: Display panel 12: Backlight part 13: Outer frame
13a: Side wall of outer frame 13b: Opening of outer frame 13c: Opening of outer frame 13d: Locking wall of outer frame 14: Liquid crystal layer 15: Array substrate 16: Color filter substrate 17: Sealing material 1
8: Gate driver 19: Source driver 20: First FPC board 21: Bottom case 21a: Side wall of bottom case 21b: Opening of bottom case 21c: Projection of bottom case 2
1d: Bottom case locking wall 21e: Bottom case slit-shaped opening 21f: Bottom case first
Locking wall 21g: second locking wall of the bottom case 21h: locking surface of the bottom case 21i: pressing surface of the bottom case 22: reflecting sheet 23: inner frame 23a: opening of the inner frame 23b: recess of the inner frame
23c: Side wall of the inner frame 23d: Projection of the inner frame 23e: Locking surface of the inner frame 23f: Rib of the inner frame 23g: Pressing surface of the inner frame 24: Light guide plate 25: Optical sheet 25a: Extension portion of the optical sheet 26 : First diffusion sheet 27: Prism sheet 28: Second diffusion sheet 29: LE
D 30: Second FPC board 31: First double-sided tape 32: Second double-sided tape 33: Third
Double-sided tape

Claims (11)

An outer frame and an inner frame each having side walls;
A protrusion formed on the side wall of the inner frame;
An opening formed on the side wall of the outer frame; and a locking wall formed on the side wall of the outer frame for locking the projection when the projection is fitted into the opening;
With
The opening has an elongated shape extending in the length direction of the side wall of the outer frame,
The storage case is characterized in that the locking wall is formed so that the deformability at a position corresponding to the central portion of the opening in the length direction is larger than that of other portions. 2. The storage case according to claim 1, wherein the locking wall has a width at a position corresponding to a central portion in a length direction of the opening that is smaller than other portions. 3. The opening according to claim 2, wherein the opening has a convex shape on the side of the locking wall, and a width of a position corresponding to a central portion in a length direction of the opening is wider than other portions. Storage case. The protrusion has a round structure in which a width and a height of a position corresponding to a central portion in the length direction of the opening are wider and higher than other portions. Storage case. 2. The storage case according to claim 1, wherein the locking wall is formed in a pair of cantilever shapes by being divided by a slit at a position corresponding to a central portion in a length direction of the opening. 6. The protrusion is formed with a protrusion that fits into the slit.
The storage case described in. 2. The storage case according to claim 1, wherein the engagement wall has a larger engagement dimension at a position corresponding to a central portion in a length direction of the opening than other portions. 2. The storage case according to claim 1, wherein the locking wall has a thickness at a central portion in a length direction of the opening that is thinner than other portions. The storage case according to claim 1, wherein a side wall of the outer frame and a side wall of the inner frame have an arc shape. An electro-optical display module comprising: the storage case according to claim 1; and an electro-optical display panel disposed in the storage case. The electro-optic display module according to claim 10, wherein the electro-optic display panel is a liquid crystal display panel or an organic electroluminescence display panel.

Images