WO2012017583A1 - Display device - Google Patents

Abstract

A display device is provided with a display panel (10) and a reinforcement member (30), which is provided along the outer edge of the display panel as seen from the normal-direction face of the front surface of the display panel. One end of each of a plurality of film substrates (34) arranged along the outer edge of the display panel is mounted on said outer edge; the reinforcement member has holding sections (33) which hold the film substrates in a state wherein the other-end sides of the film substrates are folded back toward the rear surface side of the display panel, and in a position which is further toward the display panel-side than a side end section (30a) which is furthest to the outer-side, which is the side of the reinforcement member on the opposite side to the display panel.

Description

Display device

The present invention relates to a thin display device such as a liquid crystal display device.

In recent years, the demand for display devices using liquid crystal elements, organic EL elements, plasma light emitting elements, etc. has been rapidly expanding. In addition, such display devices are being made larger and thinner. However, when the display device is increased in size and thickness, there is a problem that the rigidity of the display device is reduced and the display device is easily deformed. The deformation of the display device causes a failure of the device such as a display defect.

Here, FIG. 17 is a front view showing an overview of a conventional liquid crystal display device. In Patent Document 1, as shown in FIG. 17, a liquid crystal display including a skeleton 102 that is a reinforcing member disposed so as to surround the outer periphery of a rectangular display unit 101, and a cover 103 that covers the skeleton 102 from the back. An apparatus 100 is disclosed. A stationary jig 104 is provided below the cover 103.

The rigidity of the liquid crystal display device 100 is mainly maintained by the rigidity of the framework 102. The skeleton 102 is made of, for example, a rectangular cylindrical member. On the other hand, the cover 103 is provided mainly for the purpose of improving the design. Thus, while increasing the size and thickness of the liquid crystal display device 100, it is intended to ensure rigidity while suppressing an increase in the weight of the entire device.

JP 2009-151061 A

Incidentally, for example, a liquid crystal display device that performs transmissive display includes a liquid crystal display panel having a display unit, and a backlight unit as an illumination device arranged on the back side of the liquid crystal display panel. On the liquid crystal display panel, a plurality of film substrates such as SOF (System-on-Film) are mounted. One end of each SOF is connected to a TFT substrate constituting the liquid crystal display panel, while the other end of each SOF is connected to one source substrate. The SOF is arranged such that the end on the side to which the source substrate is connected is folded on the back side of the backlight unit.

However, in the configuration in which a skeleton is simply provided around the entire periphery of the display unit as in Patent Document 1, there is a problem that the skeleton hinders the folding of the SOF. That is, since the framework is arranged at the end of the display panel, the SOF cannot be folded along the end of the display panel, and the SOF must be folded so that the framework is wound from the end of the display panel. Absent. As a result, since the SOF is arranged outside the framework, there is a problem that the frame portion around the display portion is widened and the length of the SOF is required.

The present invention has been made in view of such various points, and its main object is to reduce the width of the frame portion while ensuring the rigidity of the display device.

In order to achieve the above object, a display device according to the present invention includes a display panel, and a reinforcing member provided along the outer edge of the display panel as viewed from the front in the normal direction of the surface of the display panel. The display device in which the rigidity and mechanical strength of the entire device are reinforced by the reinforcing member is intended.

One end of each of the plurality of film substrates disposed along the outer edge is mounted on the outer edge of the display panel, and the other end side of the film substrate is folded back to the back side of the display panel. In this state, a holding portion for holding the film substrate is provided at a position closer to the display panel than an outermost side end on the opposite side of the reinforcing member to the display panel.

The display device according to the present invention is provided with a reinforcing member along the outer edge of the display panel, and the rigidity and mechanical strength of the entire device are reinforced by the reinforcing member. The film substrate having one end mounted on the outer edge of the display panel is folded back to the back side of the display panel. Therefore, according to the present invention, the film substrate is held by the holding portion provided in the reinforcing member at the inner position on the display panel side than the outermost side (opposite side to the display panel) of the reinforcing member. Can do. That is, the film substrate can be folded back to the back side of the display panel through the inside closer to the display panel without straddling the outermost side end portion of the reinforcing member. As a result, the width of the frame portion of the display device can be reduced while securing the rigidity of the display device by the reinforcing member. And since a film substrate does not need to straddle a reinforcement member greatly, a film substrate can also be shortened.

FIG. 1 is an exploded perspective view showing the configuration of the liquid crystal display device according to the first embodiment. FIG. 2 is an exploded perspective view showing the reinforcing member in the first embodiment. FIG. 3 is a perspective view showing the first reinforcing member and the SOF before the second reinforcing member is mounted. FIG. 4 is a perspective view of the reinforcing member showing a state in which the second reinforcing member is attached to the first reinforcing member. FIG. 5 is a front view schematically showing the appearance of the liquid crystal display panel. 6 is a cross-sectional view corresponding to the line VI-VI in FIG. 7 is a cross-sectional view corresponding to the line VII-VII in FIG. FIG. 8 is a perspective view showing a backlight chassis to which a reinforcing member is attached and fixed. FIG. 9 is an enlarged perspective view showing a corner portion of the reinforcing member. FIG. 10 is a perspective view showing a reinforcing member in the second embodiment. FIG. 11 is a perspective view showing a reinforcing member in the third embodiment. FIG. 12 is an exploded perspective view showing a connecting portion of the reinforcing member in the first modification. FIG. 13 is a perspective view showing a connecting portion of the reinforcing member in the first modification. FIG. 14 is an exploded perspective view showing a connecting portion of the reinforcing member in the second modification. FIG. 15 is a perspective view showing a backlight chassis to which a reinforcing member in Modification 3 is attached and fixed. FIG. 15 is a perspective view showing a backlight chassis to which the reinforcing member in Modification 4 is attached and fixed. FIG. 17 is a front view showing an overview of a conventional liquid crystal display device.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiment.

Embodiment 1 of the Invention
1 to 9 show Embodiment 1 of the present invention.

FIG. 1 is an exploded perspective view showing the configuration of the liquid crystal display device 1 according to the first embodiment. FIG. 2 is an exploded perspective view showing the reinforcing member 30 according to the first embodiment. FIG. 3 is a perspective view showing the first reinforcing member 31 and the SOF 34 before the second reinforcing member 32 is mounted. FIG. 4 is a perspective view of the reinforcing member 30 showing a state in which the second reinforcing member 32 is attached to the first reinforcing member 31. FIG. 5 is a front view schematically showing the appearance of the liquid crystal display panel 10.

FIG. 6 is a cross-sectional view corresponding to the line VI-VI in FIG. 7 is a cross-sectional view corresponding to the line VII-VII in FIG. FIG. 8 is a perspective view showing the backlight chassis 21 to which the reinforcing member 30 is attached and fixed. FIG. 9 is an enlarged perspective view showing a corner portion of the reinforcing member 30.

In the present embodiment, the liquid crystal display device 1 will be described as an example of a display device.

The liquid crystal display device 1 includes a liquid crystal display panel 10, a backlight unit 20 that is a lighting device disposed to face the liquid crystal display panel 10, a backlight chassis 21 that holds the backlight unit 20, and a liquid crystal display panel. 10 and a bezel 23 attached to an outer edge portion of the liquid crystal display panel 10.

(Configuration of LCD panel)
As shown in FIG. 6, the liquid crystal display panel 10 is encapsulated between a TFT substrate 11 that is an active matrix substrate, a counter substrate 12 disposed to face the TFT substrate 11, and the TFT substrate 11 and the counter substrate 12. Liquid crystal layer (not shown).

Further, as shown in FIG. 5, the liquid crystal display panel 10 includes a display area 15 where an image is displayed and a frame area 16 which is a non-display area formed around the display area 15. In the display area, a plurality of pixels (not shown) arranged in a matrix are formed.

The counter substrate 12 has a transparent substrate (not shown) such as a glass substrate on which a color filter (not shown) and a common electrode (not shown) are formed. A polarizing plate 18 is attached to the surface of the counter substrate 12 opposite to the TFT substrate 11.

On the other hand, the TFT substrate 11 is a transparent substrate (not shown) such as a glass substrate on which a plurality of source wirings (not shown) extending in parallel with each other and a plurality of gate wirings (not shown) extending perpendicular to these are formed. )have. In addition, a pixel electrode (not shown) and a TFT (Thin-Film Transistor) (not shown) connected to the pixel electrode are formed on the TFT substrate for each pixel. A polarizing plate 17 is attached to the surface of the TFT substrate 11 opposite to the counter substrate 12.

Further, one end of each of a plurality of film substrates arranged along the outer edge is mounted on the frame region 16 at the outer edge of the TFT substrate 11. That is, as shown in FIG. 1, a plurality of SOFs 34 that are flexible film substrates are provided on one side of the TFT substrate 11.

In this embodiment, for example, one end of each of the four SOFs 34 is connected, and the other end of each SOF 34 is connected to one source substrate 35. The source substrate 35 is a circuit member for driving the liquid crystal display panel 10. Further, as shown in FIG. 1, the SOF 34 is provided with a chip 37 (see FIGS. 6 and 7) on the back side thereof in a state of extending in parallel with the liquid crystal display panel 10.

On the other hand, the source substrate 35 is composed of a relatively hard substrate that does not have flexibility. A plurality of TCP (Tape Carrier３６Package) 36 are mounted on the left and right sides of the side to which the SOF 34 is connected at the outer edge of the TFT substrate 11.

(Configuration of backlight unit)
As shown in FIGS. 6 and 7, the backlight unit 20 is a so-called edge light type backlight unit, and a light guide plate 26 disposed opposite to the liquid crystal display panel 10 and a side of the light guide plate 26. A plurality of point light sources (LEDs) 25 (light emitting diodes), an optical member 27 provided on the light guide plate 26 on the liquid crystal display panel 10 side, and a light guide plate 26 provided on the opposite side of the liquid crystal display panel 10. And a reflection plate 28.

As shown in FIGS. 6 and 7, the plurality of LEDs 25 are disposed to face the side surface of the light guide plate 26 and are disposed at predetermined intervals along the side of the light guide plate 26. The light guide plate 26 is formed in a substantially rectangular plate shape made of a transparent resin material, and the surface on the liquid crystal display panel 10 side is a light emission surface. On the other hand, on the back side of the light guide plate 26 (the lower side in FIGS. 6 and 7), a reflector 28 is arranged so that the light emitted to the back side of the light guide plate 26 is reflected by the reflector 28. The light enters the light guide plate 26 again.

The optical member 27 includes a lens sheet, a diffusion sheet, or the like for appropriately using light emitted from the light guide plate 26, and is disposed on the liquid crystal display panel 10 side (the upper side in FIGS. 6 and 7) of the light guide plate 26. ing.

The backlight chassis 21 is formed in a substantially rectangular plate shape as shown in FIGS. 1, 6 and 7, and is disposed on the back side of the light guide plate 26. The light guide plate 26 and the reflection plate 28 are supported by the backlight chassis 21. Further, a later-described reinforcing member 30 is attached and fixed to the backlight chassis 21.

Further, the backlight chassis 21 is formed of an aluminum material having a thickness of, for example, 0.8 mm. As shown in FIG. 8, the backlight chassis 21 has a rectangular opening 24 formed by hollowing out substantially the center on the back side of the backlight unit 20. That is, the backlight chassis 21 of this embodiment is formed in a rectangular frame shape.

In addition, in a normal liquid crystal display device, in order to ensure the rigidity of the whole apparatus, it is comprised by the member with comparatively large weights, such as a steel plate (SECC), However, In this embodiment, the reinforcement member 30 is mentioned as mentioned later. Since it is provided, the backlight chassis 21 can be reduced in weight.

(Configuration of panel frame and bezel)
The panel frame 22 is made of a resin material such as polycarbonate (PC), for example, and is formed by a rectangular frame-shaped member opened in a rectangular region corresponding to the display region 15 of the liquid crystal display panel 10. The panel frame 22 is interposed between the frame region 16 and the light guide plate 26 of the liquid crystal display panel 10 as shown in FIGS. 6 and 7. Thus, the panel frame 22 supports the liquid crystal display panel 10 from the back side thereof, and supports the light guide plate 26 from the front side (liquid crystal display panel 10 side).

The bezel 23 is a substantially rectangular frame-shaped member as shown in FIG. 1, and its cross section is formed in an L shape as shown in FIGS. In this way, the cover covers the frame region 16 of the liquid crystal display panel 10 and the side portions of the liquid crystal display panel 10 and the backlight unit 20. The bezel 23 is made of a metal material such as an aluminum material.

(Structure of reinforcing member)
The liquid crystal display device 1 includes a reinforcing member 30 provided along the outer edge of the liquid crystal display panel 10 when viewed from the front in the normal direction of the surface of the liquid crystal display panel 10. In the present embodiment, as shown in FIGS. 1 and 8, the reinforcing member 30 is provided so as to surround the four sides around the liquid crystal display panel 10. In the liquid crystal display device 1, the rigidity and mechanical strength of the entire device are reinforced by the reinforcing member 30.

Here, the other end side of the SOF 34 that is not mounted on the TFT substrate 11 is folded back to the back side of the liquid crystal display panel 10 as shown in FIGS. The source substrate 35 provided at the other end of the SOF 34 is disposed on the back side of the backlight chassis 21 as shown in FIGS.

The reinforcing member 30 has a holding portion 33 that holds the SOF 34 in a state where the other end side of the SOF 34 is folded back to the back side of the liquid crystal display panel 10. The holding portion 33 is a liquid crystal display panel than the outermost side end portion 30a on the side opposite to the liquid crystal display panel 10 of the reinforcing member 30 (that is, the left side in FIGS. 6 and 7 and the diagonally lower left side in FIG. 4). The SOF 34 is held at a position on the 10 side.

The reinforcing member 30 arranged along one side where the SOF 34 is provided among the four sides of the liquid crystal display panel 10 includes a first reinforcing member 31 and a second reinforcing member 32. On the other hand, as shown in FIGS. 1 and 8, the other three reinforcing members 30 are formed of hollow members having a rectangular cross section. For example, as shown in FIG. 9, the reinforcing members 30 are joined together by welding, for example.

As shown in FIGS. 2 to 4, the first reinforcing member 31 has a plurality of cutout portions 33 as the holding portions 33 and convex portions 39 that are formed between the cutout portions 33 and project outward. is doing. The width of the notch 33 is slightly larger than the width of the SOF 34. Moreover, the convex part 39 has a set of plate member arrange | positioned facing each other. The gaps between the pair of plate members in each convex portion 39 have the same size.

On the other hand, the second reinforcing member 32 is configured to engage with the convex portion 39 of the first reinforcing member 31 in a state where the SOF 34 is held in the notch 33. As shown in FIGS. 2 to 4, the second reinforcing member 32 has a pair of plate members arranged to face each other. The width (that is, the external dimension) between the outer surfaces of the pair of plate members is the same as or slightly smaller than the gap between the plate members in the convex portion 39.

Then, when the pair of plate members of the second reinforcing member 32 is fitted between the pair of plate members in the convex portion 39 of the first reinforcing member 31, the second reinforcing member 32 is the first reinforcing member 32. The reinforcing member 31 is engaged. At this time, the SOF 34 is sandwiched between the first reinforcing member 31 and the second reinforcing member 32. The first reinforcing member 31 and the second reinforcing member 32 can be fixed by, for example, an adhesive material or adhesion. Thereby, the reinforcing member 30 is formed in a hollow shape as a whole.

The first reinforcing member 31 and the second reinforcing member 32 are preferably made of a material having higher mechanical strength and higher thermal conductivity than the backlight chassis 21, for example, a metal material such as a steel plate (SECC). ing. In this embodiment, the 1st reinforcement member 31 and the 2nd reinforcement member 32 are formed with the steel plate whose thickness is 0.5 mm, for example.

Moreover, the 1st reinforcement member 31 and the 2nd reinforcement member 32 can be comprised with a material with comparatively high heat conductivity and rigidity for aluminum materials and carbon fiber reinforced plastics (CFRP) fields other than a steel plate. It is.

As shown in FIG. 8, the reinforcing member 30 is fixedly attached to the backlight chassis 21 along the four sides of the backlight chassis 21. The reinforcing member 30 is fixed to the backlight chassis 21 with an adhesive such as a screw or a double-sided tape. As a result, the rigidity of the backlight chassis 21 that has been lowered due to the formation of the opening 24 can be compensated by the reinforcing member.

Further, the plurality of LEDs 25 are attached and fixed to the reinforcing member 30 instead of the backlight chassis 21. The LED 25 can be fixed to the reinforcing member 30 with an adhesive material such as a screw or a double-sided tape. As a result, the heat radiation of the LED 25 can be performed by the reinforcing member 30. The LED 25 varies depending on the size of the liquid crystal display panel 10, but is provided along one side, two sides, or four sides of the liquid crystal display panel 10.

6 and 7, the reinforcing member 30 and the LED 25 are sandwiched between the backlight chassis 21 and the panel frame 22. The bezel 23 is attached to the panel frame 22 and the backlight chassis 21 so as to cover the frame region 16 that is the outer edge of the liquid crystal display panel 10.

Then, the liquid crystal display device 1 applies a predetermined voltage between the pixel electrode and the common electrode for each pixel of the liquid crystal display panel 10 in a state where the backlight unit 20 is lit, and in the liquid crystal layer. The desired display is performed by controlling the alignment state of the liquid crystal molecules.

-Production method-
When the liquid crystal display device 1 is manufactured, the reinforcing member 30 to which the plurality of LEDs 25 are attached and fixed is attached and fixed to the four sides of the backlight chassis 21 in which the openings 24 are formed in advance. At this time, with respect to the reinforcing member 30 including the first reinforcing member 31 and the second reinforcing member 32, only the first reinforcing member 31 is attached and fixed to the backlight chassis 21.

Subsequently, the light guide plate 26 is disposed inside the four reinforcing members 30 in the backlight chassis 21, and the optical member 27 is provided on the light guide plate 26. Next, after the panel frame 22 is disposed around the light guide plate 26, the liquid crystal display panel 10 manufactured in advance is disposed on the panel frame 22.

Next, the other end of the SOF 34 having one end connected to the liquid crystal display panel 10 is folded back to the back side of the backlight chassis 21 together with the source substrate 35. At this time, as shown in FIG. 3, the central portion of each SOF 34 is held by the notch 33 of the first reinforcing member 31. Thereafter, as shown in FIG. 4, the second reinforcing member 32 is fitted inside the convex portion 39 of the first reinforcing member 31. Thereby, the second reinforcing member 32 is engaged with the first reinforcing member 31 and fixed to each other.

Next, as shown in FIGS. 6 and 7, the bezel 23 is attached to the panel frame 22 and the backlight chassis 21. Thus, the liquid crystal display device 1 is manufactured.

-Effect of Embodiment 1-
Therefore, according to the first embodiment, since the reinforcing member 30 is provided along the outer edge of the liquid crystal display panel 10, the rigidity and mechanical strength of the entire apparatus can be reinforced by the reinforcing member 30. The SOF 34 having one end mounted on the outer edge of the liquid crystal display panel 10 is folded back to the back side of the liquid crystal display panel 10. Therefore, at the inner position on the liquid crystal display panel 10 side with respect to the outermost side (opposite side to the liquid crystal display panel 10) in the reinforcing member 30, the notched portion (holding portion) 33 provided in the reinforcing member 30. The SOF 34 can be held.

That is, the SOF 34 can be folded back to the back side of the liquid crystal display panel 10 through the inside closer to the liquid crystal display panel 10 without straddling the outermost side end portion of the reinforcing member 30. As a result, the width of the frame portion of the liquid crystal display device 1 can be reduced while securing the rigidity of the liquid crystal display device 1 by the reinforcing member 30. In addition, since the SOF 34 does not have to straddle the reinforcing member 30, the SOF 34 can be shortened.

Furthermore, since the holding portion of the SOF 34 is configured by the cutout portion 33 formed in the reinforcing member 30, the cutout portion 33 as the holding portion can be formed with a simple configuration. Further, since the reinforcing member 30 has the first reinforcing member 31 having the notch 33 and the second reinforcing member 32 engaged with the convex portion 39 of the first reinforcing member 31, the notch portion is provided in the reinforcing member 30. Although having 33, the rigidity of the reinforcing member 30 can be further increased by the second reinforcing member 32. Further, since the reinforcing member 30 is formed in a hollow shape, the weight can be reduced while maintaining its rigidity.

Further, since the reinforcing member 30 is attached and fixed to the backlight chassis 21, the rigidity of the liquid crystal display device 1 can be maintained by the reinforcing member 30 instead of the backlight chassis 21. Therefore, the backlight chassis prioritizes weight reduction over the rigidity. 21 can be formed. Therefore, it is preferable that the reinforcing member 30 is made of a material having a mechanical strength higher than that of the backlight chassis 21.

Furthermore, since the thermal conductivity of the reinforcing member 30 is made larger than that of the backlight chassis 21, the heat generated in the backlight unit 20 can be efficiently radiated by the reinforcing member 30. In particular, since the LED 25 of the backlight unit 20 is attached and fixed to the reinforcing member 30, the heat dissipation of the LED 25 can be enhanced. Here, in the edge light type backlight, the optical quality of the light guide plate 26 and the LED 25 is shifted, so that the display quality and the light incident efficiency to the light guide plate 26 are greatly changed. On the other hand, in this embodiment, since LED25 was fixed to the reinforcement member 30 with high rigidity, the shift | offset | difference of the optical axis of LED25 can be suppressed.

Furthermore, since the area of the backlight chassis 21 facing the back surface of the backlight unit 20 is relatively large, an opening is formed on the back surface side of the backlight unit 20 of the backlight chassis 21. The backlight chassis 21 can be efficiently reduced in weight while maintaining the rigidity.

<Modification 1>
12 and 13 show a first modification of the first embodiment.

FIG. 12 is an exploded perspective view showing a connection portion of the reinforcing member 30 in the first modification. FIG. 13 is a perspective view showing a connecting portion of the reinforcing member 30 in the first modification. In the following modifications and embodiments, the same parts as those in FIGS. 1 to 9 are denoted by the same reference numerals, and detailed description thereof is omitted.

In the first embodiment, the reinforcing members 30 are connected and fixed to each other by welding, but in this modification, a part of one reinforcing member 30 that is connected and fixed to each other is overlapped on the other reinforcing member 30. These are fixed to the backlight chassis 21 with screws.

That is, as shown in FIG. 12, the end of one reinforcing member 30 is formed in an open end 51 from which the upper part of the upper and lower plate members is removed. On the other hand, the end portion of the other reinforcing member 30 has an extension portion 52 obtained by extending the upper plate member among the plate members facing vertically.

And as shown in FIG. 13, while arrange | positioning so that each reinforcement member 30 may comprise a right angle, the extension part 52 of the other reinforcement member 30 is piled up on the opening edge part 51 of one reinforcement member 30. The extension 52 and the open end 51 are fastened and fixed to the backlight chassis 21 by screws (not shown) in the direction of the arrow 53 in FIG.

In this way, the two reinforcing members 30 and the backlight chassis 21 can be connected and fixed to each other with screws that are simple fixing means.

<Modification 2>
FIG. 14 shows a second modification of the first embodiment.

FIG. 14 is an exploded perspective view showing a connection portion of the reinforcing member 30 in the second modification.

In the first embodiment, the reinforcing member 30 corresponding to one side of the liquid crystal display panel 10 on which the SOF 34 is disposed is constituted by the first reinforcing member 31 and the second reinforcing member 32, and the reinforcing members corresponding to the other three sides. In this modification, the reinforcing member 30 corresponding to the three sides is also configured by two reinforcing members 31a and 32a, respectively.

That is, as shown in FIG. 14, the reinforcing member 30 disposed corresponding to the three sides of the liquid crystal display panel 10 on which the SOF 34 is not disposed includes the first reinforcing member 31 a disposed on the liquid crystal display panel 10 side, A second reinforcing member 32a disposed outside the first reinforcing member 31a (on the side opposite to the liquid crystal display panel 10).

The first reinforcing member 31a includes a pair of plate members that protrude outward and are arranged to face each other. On the other hand, the second reinforcing member 32a includes a pair of plate members that protrude inward and are disposed to face each other.

The width (that is, the outer dimensions) between the outer surfaces of the pair of plate members in the second reinforcing member 32a is the same as or slightly smaller than the gap between the pair of plate members in the first reinforcing member 31a.

Then, the second reinforcing member 32a is inserted into the first reinforcing member 31a by inserting the pair of plate members of the second reinforcing member 32a between the pair of plate members of the first reinforcing member 31a. Will be engaged. The first reinforcing member 31a and the second reinforcing member 32a can be fixed by, for example, an adhesive material or adhesion. Thereby, the reinforcing member 30 is formed in a hollow shape as a whole.

Furthermore, as shown in FIG. 14, the end of the second reinforcing member 32a is formed integrally with the end of one adjacent second reinforcing member 32 (or the second reinforcing member 32a), and is L-shaped as a whole. It is formed in a shape. As a result, the rigidity of the entire reinforcing member 30 can be increased, and the L-shaped second reinforcing members 32 and 32a along the two sides of the liquid crystal display panel 10 can be integrated into the first reinforcing members 31 and 31a. It can be inserted and easily assembled.

Note that the second reinforcing members 32 and 32 a may be configured by independent members for each of the four sides of the liquid crystal display panel 10.

<Modification 3>
FIG. 15 shows a third modification of the first embodiment.

FIG. 15 is a perspective view showing the backlight chassis 21 to which the reinforcing member 30 in Modification 3 is attached and fixed.

The backlight chassis 21 of this modification is formed in a rectangular frame shape by enlarging the opening 24 of the backlight chassis 21 in the first embodiment. A seat 55 that closes the opening 24 is provided in the backlight chassis 21.

The sheet 55 is formed of a light material having a relatively high thermal conductivity such as graphite. Even if it does in this way, weight reduction can be achieved, maintaining the rigidity of the whole apparatus.

<Modification 4>
FIG. 16 shows a fourth modification of the first embodiment.

FIG. 16 is a perspective view showing the backlight chassis 21 to which the reinforcing member 30 in Modification 4 is attached and fixed.

In the first embodiment, one opening 24 is formed in the central portion on the back side of the backlight chassis 21, whereas in this modification, a plurality of openings 24 are formed in the backlight chassis 21.

That is, the backlight chassis 21 is formed with a plurality of openings 24 arranged in a matrix. In this way, it is possible to reduce the weight while maintaining the rigidity of the backlight chassis 21 itself to some extent.

<< Embodiment 2 of the Invention >>
FIG. 10 shows Embodiment 2 of the present invention.

FIG. 10 is a perspective view showing the reinforcing member 30 according to the second embodiment.

As shown in FIG. 1, the liquid crystal display device 1 according to the second embodiment includes a liquid crystal display panel 10, a backlight unit 20 that is a lighting device disposed to face the liquid crystal display panel 10, and a backlight unit 20. A backlight chassis 21 that holds the liquid crystal display panel 10, a panel frame 22 that holds the liquid crystal display panel 10, and a bezel 23 that is attached to the outer edge of the liquid crystal display panel 10.

In the second embodiment, the configuration of the reinforcing member 30 having the holding portion 33 in the first embodiment is different. In other words, in the first embodiment, the reinforcing member 30 is configured by the first reinforcing member 31 having the notch 33 and the second reinforcing member 32 engaged therewith.

On the other hand, as shown in FIG. 10, the reinforcing member 30 in the present embodiment is formed between a plurality of cutout portions 33 as the holding portions 33 and the cutout portions 33 and outside (that is, the reinforcing member 30). And a projection 39 projecting to the opposite side of the liquid crystal display panel 10. Further, the reinforcing member 30 is formed of a hollow cylindrical member, and the notch 33 is formed by drawing.

That is, the reinforcing member 30 of the present embodiment is configured by a single cylindrical member as a whole while having the notch 33. The width of the notch 33 gradually increases toward the outside.

Therefore, according to the second embodiment, since the SOF 34 can be held by the notch 33 of the reinforcing member 30, the same effect as in the first embodiment can be obtained. Furthermore, since the reinforcing member 30 having the notch 33 has a cylindrical shape even though it is configured as a single member as a whole, the reinforcing member 30 having the notch 33 can be easily formed while maintaining rigidity.

<< Embodiment 3 of the Invention >>
FIG. 11 shows Embodiment 3 of the present invention.

FIG. 11 is a perspective view showing the reinforcing member 30 in the third embodiment.

As shown in FIG. 1, the liquid crystal display device 1 according to the third embodiment includes a liquid crystal display panel 10, a backlight unit 20 that is a lighting device disposed to face the liquid crystal display panel 10, and the backlight unit 20. A backlight chassis 21 that holds the liquid crystal display panel 10, a panel frame 22 that holds the liquid crystal display panel 10, and a bezel 23 that is attached to the outer edge of the liquid crystal display panel 10.

In the second embodiment, the reinforcing member 30 having the notch 33 is configured by one member, whereas in the present embodiment, the reinforcing member 30 is configured by two members.

That is, as shown in FIG. 11, the reinforcing member 30 of the present embodiment is formed by a groove-like member having a concave cross section, and the open end 38 of the groove-like member is closed by the backlight chassis 21. As a result, the reinforcing member 30 closed by the backlight chassis 21 is formed in a hollow shape as a whole.

Therefore, also in the third embodiment, since the reinforcing member 30 has the plurality of notches 33, the same effect as in the first embodiment can be obtained. Further, when the reinforcing member 30 is made of a material that is difficult to form the notch 33 by drawing the cylindrical member as in the second embodiment, the notch 33 can be easily formed as in the present embodiment. The reinforcing member 30 having the above can be formed.

<< Other Embodiments >>
In each of the above embodiments and modifications, the example in which the second reinforcing member 32 is fitted inside the first reinforcing member 31 has been described. However, the present invention is not limited to this example. The two reinforcing members 32 may be externally fitted and engaged with each other.

In addition, the holding portion 33 formed in the reinforcing member 30 is not limited to the configuration of the notch portion 33, but the liquid crystal display panel 10 than the outermost side end portion 30 a opposite to the liquid crystal display panel 10 of the reinforcing member 30. Any configuration that holds the SOF 34 at the inner position on the side may be used.

In each of the above embodiments and modifications, a liquid crystal display device has been described as an example of a display device. However, the present invention is not limited to this, and for example, a display device whose display panel is an organic EL display panel, or a display panel The present invention can be similarly applied to other display devices such as a display device in which is a plasma light emitting display panel.

As described above, the present invention is useful for a thin display device such as a liquid crystal display device.

1 Liquid crystal display device
10 Liquid crystal display panel
15 display area
16 Frame area
20 Backlight unit
21 Backlight chassis (chassis)
24 opening
25 LED (point light source)
26 Light guide plate
30 Reinforcing member
30a outermost side edge
31 1st reinforcement member
32 Second reinforcing member
33 Notch, holding part
34 SOF (film substrate)
38 Open end
39 Convex

Claims (10)

A display panel;
A reinforcing member provided along the outer edge of the display panel when viewed from the front in the normal direction of the surface of the display panel,
A display device in which the rigidity and mechanical strength of the entire device are reinforced by the reinforcing member,
One end of each of a plurality of film substrates arranged along the outer edge is mounted on the outer edge of the display panel,
In the state where the other end side of the film substrate is folded back to the back side of the display panel, the reinforcing member is closer to the display panel than the outermost side end portion opposite to the display panel of the reinforcing member. A display device having a holding portion for holding the film substrate at a position. The display device according to claim 1,
The display device according to claim 1, wherein the reinforcing member includes a plurality of cutout portions as the holding portion and a convex portion formed between the cutout portions and protruding outward. The display device according to claim 1,
The reinforcing member includes a first reinforcing member having a plurality of cutout portions as the holding portion and a protruding portion formed between the cutout portions and protruding outward, and the film substrate is held by the cutout portion. And a second reinforcing member that engages with the convex portion of the first reinforcing member. The display device according to any one of claims 1 to 3,
The display device, wherein the reinforcing member is formed in a hollow shape. The display device according to any one of claims 1 to 4,
The display panel is a liquid crystal display panel,
A backlight unit which is a lighting device arranged to face the liquid crystal display panel;
A chassis for holding the backlight unit,
The display device, wherein the reinforcing member is fixedly attached to the chassis. The display device according to claim 5,
A display device, wherein the chassis has an opening formed on the back side of the backlight unit. The display device according to claim 5 or 6,
The display device according to claim 1, wherein the reinforcing member is made of a material having higher mechanical strength and higher thermal conductivity than the chassis. The display device according to any one of claims 5 to 7,
The backlight unit includes a light guide plate disposed to face the liquid crystal display panel, and a plurality of point light sources disposed on the sides of the light guide plate.
The display device, wherein the plurality of point light sources are fixedly attached to the reinforcing member. The display device according to claim 2 or 3,
The reinforcing member is formed by a hollow cylindrical member,
The display device, wherein the notch is formed by drawing. The display device according to any one of claims 5 to 8,
The reinforcing member is formed by a groove-like member having a concave cross section,
A display device, wherein an open end of the groove-like member is closed by the chassis.

Images