WO2013080849A1

WO2013080849A1 - Display device and television reception device

Info

Publication number: WO2013080849A1
Application number: PCT/JP2012/080142
Authority: WO
Inventors: 英司廣田
Original assignee: シャープ株式会社
Priority date: 2011-11-28
Filing date: 2012-11-21
Publication date: 2013-06-06

Abstract

This liquid crystal display device (10) is provided with: an LED (17); a liquid crystal panel (11); a gate-side flexible substrate (28) connected to the end of the liquid crystal panel (11) and disposed in a manner so as to protrude to the outside from the end; a light guide plate (16) disposed in a manner so as to overlap the liquid crystal panel (11) and such that the end portion (16EP) is disposed to the outside of the end of the liquid crystal panel (11); a holding member (HM) having a chassis (14) and frame (13) that hold the liquid crystal panel (11) and the light guide plate (16) by sandwiching same; a light guide plate support section (23A) that is disposed along the edge of the liquid crystal panel (11) with respect to the gate-side flexible substrate (28) and that can support at least the light guide plate (16); and a light-shielding section (30) that is disposed to the outside of the gate-side flexible substrate (28) and that is able to shield the light present at the outside of the light-shielding section (30) from directly entering the end of liquid crystal panel (11).

Description

Display device and television receiver

The present invention relates to a display device and a television receiver.

In recent years, the display elements of image display devices such as television receivers are shifting from conventional cathode ray tubes to thin display panels such as liquid crystal panels and plasma display panels, which enables thinning of image display devices. Since the liquid crystal panel used for the liquid crystal display device does not emit light by itself, a backlight device is separately required as a lighting device, and the backlight device is roughly classified into a direct type and an edge light type according to the mechanism. In order to further reduce the thickness of the liquid crystal display device, it is preferable to use an edge light type backlight device, and an example described in Patent Document 1 below is known.

JP 2002-174811 A

(Problems to be solved by the invention)
The liquid crystal display device described in Patent Document 1 employs a structure in which a liquid crystal panel is sandwiched between a front panel pressing member and a back panel receiving member. Here, when there is a request for reduction in manufacturing cost or further reduction in thickness, for example, it is conceivable to eliminate the panel receiving member on the back side. However, since this panel receiving member has a function of supporting the end of the liquid crystal panel from the back side and blocking the light from the back side from entering the end of the liquid crystal panel, it is simply a panel receiving member. If this is abolished, there is a concern that light from the back side enters the end of the liquid crystal panel and light leakage occurs. Furthermore, since this panel receiving member also has a function of supporting the light guide plate from the front side, if the panel receiving member is simply abolished, the positional relationship of the light guide plate with respect to the light source and the liquid crystal panel becomes unstable. There are concerns.

In order to cope with these problems, it is conceivable to newly provide a structure that shields light from the end of the liquid crystal panel while supporting the light guide plate from the front side instead of eliminating the panel receiving member. However, this structure is arranged in the frame portion of the liquid crystal display device, whereas the frame portion has only a limited space, and the liquid crystal connected to the end of the liquid crystal panel. A flexible substrate for driving is arranged. Therefore, while maintaining the liquid crystal display device in a narrow frame, the structure is given sufficient mechanical strength to support the light guide plate, and the structure is prevented from interfering with the flexible substrate and the liquid crystal panel. It has been difficult to simultaneously realize the suppression of light leakage to the end of the.

The present invention has been completed based on the above circumstances, and an object thereof is to provide a display device suitable for narrowing a frame while suppressing light leakage and stably supporting a light guide plate. To do.

(Means for solving the problem)
The display device of the present invention includes a light source, a display panel that performs display using light of the light source, and a panel connection member that is connected to an end portion of the display panel and that protrudes outward from the end portion. And the display panel is disposed so as to overlap the display surface side opposite to the display panel, the end surface is disposed to face the light source, and the end side portion is outside the end portion of the display panel. A holding having a pair of holding portions for holding the arranged light guide plate, the light source and the panel connecting member, and holding the display panel and the light guide plate from the display surface side and the opposite side. A member, and the panel connecting member arranged side by side along the end of the display panel, and the holding unit disposed on the display surface side of the pair of holding units and the light guide plate Between the end part A light guide plate support portion that can support at least the light guide plate, and an outer side opposite to the display panel side with respect to the panel connection member and a pair of the holding members Light disposed at least on the outer side of the light-shielding part by being arranged in a form straddling the holding part arranged on the display surface side of the part and the end side part of the light guide plate. A light-shielding portion that can shield light directly entering the end portion.

In this way, since the light emitted from the light source is incident on the end face of the light guide plate and then guided to the display panel, an image is displayed on the display panel using the light. The light guide plate that guides the light from the light source to the display panel is disposed between the end portion and the holding portion arranged on the display surface side of the pair of holding portions. Therefore, the positional relationship with respect to the light source and the display panel is stably maintained, whereby the display quality relating to the image displayed on the display panel is stably improved. And since this light-guide plate support part is distribute | arranged along with the edge part of a display panel with respect to the panel connection member distribute | arranged in the form protruded outside from the edge part of a display panel, the edge part of a display panel A sufficient size is secured by utilizing the protruding dimension of the panel connecting member. Therefore, the mechanical strength of the light guide plate support portion is sufficiently obtained, and the display device can be kept in a narrow frame while stably supporting the light guide plate.

By the way, the pair of holding portions of the holding member accommodates the light source and the panel connecting member, and sandwiches the display panel and the light guide plate arranged so as to overlap each other from the display surface side and the opposite side. Since the panel receiving member is not interposed between the light guide plate and the light source and the display panel and the panel connecting member as in the prior art, the end of the display panel, particularly the panel connecting member is connected. There is a concern that light leakage may occur at the spot. However, the light shielding portion is disposed on the outer side opposite to the display panel side with respect to the panel connection member, and straddles the holding portion disposed on the display surface side of the pair of holding portions and the end side portion of the light guide plate. Since it is arranged in a shape, it is possible to suitably shield the light existing outside the light shielding portion from directly entering the end portion of the display panel, particularly the connection portion of the panel connecting member. Thereby, the light leakage to the edge part of a display panel can be suppressed, and the display quality which concerns on the image displayed on a display panel can be made favorable.

The following configuration is preferable as an embodiment of the present invention.
(1) The said light-guide plate support part and the said light-shielding part are each integrally formed in the said holding part distribute | arranged to the said display surface side among a pair of said holding parts. In this way, the light guide plate support part and the light-shielding part are integrally formed on the holding part arranged on the display surface side, so as compared with the case where they are separated from the holding part. Such workability is good, and the number of parts is small.

(2) The light guide plate support portion protrudes from the holding portion disposed on the display surface side of the pair of holding portions toward the light guide plate side, and a protruding end surface thereof is the end portion of the light guide plate. It is in contact with. If it does in this way, by making the protrusion end surface of the light-guide plate support part integrally formed in the holding | maintenance part distribute | arranged to the display surface side contact | abut with the edge-side part of a light-guide plate, it will be in the edge-side part of a light-guide plate Sufficient support force can be provided.

(3) The light-shielding portion protrudes toward the light guide plate from the holding portion arranged on the display surface side of the pair of holding portions, and the first space where the end portion of the display panel faces, At least the second space where the end face of the end side portion of the light guide plate faces is arranged. In this way, the first space where the end of the display panel faces and the second space where the end face of the end portion of the light guide plate faces at least by the light shielding portion integrally formed with the holding portion disposed on the display surface side. As a result, the light existing in the second space can be blocked from entering the first space, thereby preventing light from entering the end of the display panel.

(4) As for the said light-shielding part, the protrusion end surface is contact | abutted to the said edge part of the said light-guide plate. If it does in this way, a light guide plate can be supported by a light-shielding part with a light guide plate support part. Thereby, a light-guide plate can be supported more stably.

(5) The light guide plate support portion is made of a light shielding material. If it does in this way, the direct incident light to the edge part of a display panel can be shielded by the light-guide plate support part with a light-shielding part. Thereby, higher light shielding performance can be obtained.

(6) The light guide plate support part and the light shielding part are formed to be separated from each other. In this case, compared with the case where the light guide plate support portion and the light shielding portion are formed in a continuous form, the shape of the light guide plate support portion and the light shield portion does not become complicated, so that the manufacture is facilitated. The effect of can be obtained.

(7) A part of the light-shielding part is arranged on the outer side opposite to the display panel side with respect to the light guide plate support part. In this way, since the light shielding range by the light shielding portion is a range that overlaps the light guide plate support portion, light leakage to the end portion of the display panel can be more suitably prevented.

(8) The light shielding portion has a wider range of formation along the end portion of the display panel than the panel connection member. In this way, light leakage to the connection portion of the panel connection member among the end portions of the display panel can be more suitably prevented by the light-shielding portion that covers a wider range than the panel connection member in the direction along the end portion of the display panel. it can.

(9) The light guide plate support part and the light shielding part are formed in a continuous form. If it does in this way, the mechanical strength of a light-guide plate support part can be made higher, and a light-guide plate can be supported more stably. Further, if the light guide plate support part and the light shielding part are formed in a separated form, a gap is formed between the light guide plate support part and the light shielding part, compared to a gap generated between the light guide plate support part and the light shielding part. Therefore, the light shielding function for the edge of the display panel can be enhanced, and light leakage can be prevented more reliably.

(10) As for the said light-guide plate support part, the outer side surface is distribute | arranged outside rather than the inner side surface in the said light-shielding part. In this case, the light guide plate support portion is sized using at least a part of the width dimension of the light shielding portion in addition to the projection size of the panel connection member from the end portion of the display panel. The strength is higher and the light guide plate can be supported more stably.

(11) The light guide plate support portion is arranged such that an outer side surface thereof is flush with an outer side surface of the light shielding portion. In this way, the formation range of the light guide plate support portion can be maximized, so that the mechanical strength can be further increased and the light guide plate can be supported more stably.

(12) The panel connection member includes a panel driving component that drives the display panel. According to this configuration, since the panel connection member connected to the end of the display panel has the panel driving component, the display panel can be driven by the panel driving component to display an image.

(13) The display panel is a liquid crystal panel in which liquid crystal is sealed between a pair of substrates. Such a display device can be applied as a liquid crystal display device to various uses such as a display of a television or a personal computer, and is particularly suitable for a large screen.

(The invention's effect)
According to the present invention, it is possible to provide a display device suitable for narrowing the frame while suppressing light leakage and stably supporting the light guide plate.

1 is an exploded perspective view showing a schematic configuration of a television receiver and a liquid crystal display device according to Embodiment 1 of the present invention. Rear view of television receiver and liquid crystal display Exploded perspective view showing a schematic configuration of a liquid crystal display unit constituting a liquid crystal display device Sectional drawing which shows the cross-sectional structure along the short side direction of a liquid crystal display device Sectional drawing which shows the cross-sectional structure along the long side direction of a liquid crystal display device The expanded sectional view which shows the section composition along the direction of the short side of a liquid crystal display, and cut the flexible substrate (screw fastening hole for co-fastening) The expanded sectional view which shows the cross-sectional structure along the short side direction of a liquid crystal display device, and cut | disconnected the light-guide plate support part (screw penetration hole for heat radiating members) Rear view of LCD panel and frame Enlarged rear view of the liquid crystal panel and frame near the light guide plate support part and light shielding part Xx sectional view of FIG. Xi-xi sectional view of FIG. Sectional drawing which shows the cross-sectional structure along the short side direction of a liquid crystal display device, and shows the operation | work procedure which assembles each component of the liquid crystal display unit which makes a liquid crystal display device Sectional drawing which shows the cross-sectional structure along the long side direction of a liquid crystal display device, Comprising: The operation | work procedure which assembles each component of the liquid crystal display unit which makes a liquid crystal display device An enlarged back view of the vicinity of the light guide plate support part and the light shielding part in the liquid crystal panel and the frame according to the second embodiment of the present invention. Xv-xv sectional view of FIG. Xvi-xvi sectional view of FIG. An enlarged back view of the vicinity of the light guide plate support part and the light shielding part in the liquid crystal panel and the frame according to Embodiment 3 of the present invention. An enlarged back view of the vicinity of the light guide plate support part and the light shielding part in the liquid crystal panel and the frame according to Embodiment 4 of the present invention. An enlarged back view of the vicinity of the light guide plate support part and the light shielding part in the liquid crystal panel and the frame according to the fifth embodiment of the present invention. Sectional drawing which shows the cross-sectional structure of the light-shielding part and light-guide plate which concern on Embodiment 6 of this invention. Sectional drawing which shows the cross-sectional structure of the LED unit which concerns on Embodiment 7 of this invention, a light-guide plate, and a gate side flexible substrate.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. In this embodiment, the liquid crystal display device 10 is illustrated. In addition, a part of each drawing shows an X axis, a Y axis, and a Z axis, and each axis direction is drawn to be a direction shown in each drawing. Moreover, let the upper side shown in FIG. 4 be a front side, and let the lower side of the figure be a back side.

As shown in FIG. 1, the television receiver TV according to the present embodiment includes a liquid crystal display unit (display unit) LDU, and various substrates PWB, MB, and CTB attached to the back side (back side) of the liquid crystal display unit LDU. The liquid crystal display unit LDU includes a cover member CV attached to the back surface side of the liquid crystal display unit LDU so as to cover the various substrates PWB, MB, and CTB, and a stand ST. Axial direction) is supported. The liquid crystal display device 10 according to the present embodiment is obtained by removing at least a configuration for receiving a television signal (such as a tuner portion of the main board MB) from the television receiver TV having the above-described configuration. As shown in FIG. 3, the liquid crystal display unit LDU has a horizontally long rectangular shape (rectangular shape, longitudinal shape) as a whole, and includes a liquid crystal panel 11 as a display panel and a backlight device (illumination device) as an external light source. ) 12, and these are external members constituting the external appearance of the liquid crystal display device 10, which are opposite to the frame (the holding portion disposed on the display surface 11 c side, one holding portion) 13 and the chassis (the display surface 11 c side). The holding portion disposed on the side and the other holding portion) 14 are integrally held. It can be said that the frame 13 and the chassis 14 constitute a holding member HM. Note that the chassis 14 according to the present embodiment constitutes a part of the appearance member and the holding member HM and a part of the backlight device 12.

First, the configuration of the back side of the liquid crystal display device 10 will be described. As shown in FIG. 2, the stand mounting member STA extending along the Y-axis direction is provided at two positions spaced apart in the X-axis direction on the back surface of the chassis 14 constituting the back side appearance of the liquid crystal display device 10. A pair is attached. These stand attachment members STA have a substantially channel shape in which the cross-sectional shape is open on the surface on the chassis 14 side, and a pair of support columns STb in the stand ST are inserted into a space held between the stand 14 and the chassis 14. It has become. Note that a wiring member (such as an electric wire) connected to the LED substrate 18 of the backlight device 12 can be passed through the space in the stand attachment member STA. The stand ST includes a pedestal part STa that is parallel to the X-axis direction and the Z-axis direction, and a pair of column parts STb that rise from the pedestal part STa along the Y-axis direction. The cover member CV is made of synthetic resin, and covers a part of the back surface of the chassis 14, specifically about the lower half of FIG. 2 while traversing the pair of stand mounting members STA in the X-axis direction. It is attached in the form. Between the cover member CV and the chassis 14, there is a component storage space that can store components such as various substrates PWB, MB, and CTB described below.

As shown in FIG. 2, the various substrates PWB, MB, and CTB include a power supply substrate PWB, a main substrate MB, and a control substrate CTB. The power supply substrate PWB can be said to be a power supply source of the liquid crystal display device 10 and can supply driving power to the other substrates MB and CTB, the LEDs 17 included in the backlight device 12, and the like. Therefore, it can be said that the power supply substrate PWB also serves as the “LED drive substrate (light source drive substrate) for driving the LED 17”. The main board MB includes at least a tuner unit capable of receiving a television signal and an image processing unit (not shown) for processing the received television signal. The processed image signal is described below. Output to the control board CTB is possible. The main board MB receives an image signal from the image reproduction device when the liquid crystal display device 10 is connected to an external image reproduction device (not shown). It can be processed and output to the control board CTB. The control board CTB has a function of converting an image signal input from the main board MB into a liquid crystal driving signal and supplying the converted liquid crystal driving signal to the liquid crystal panel 11.

As shown in FIG. 3, the liquid crystal display unit LDU that constitutes the liquid crystal display device 10 has a main component that includes a frame (front frame) 13 that forms a front side appearance and a chassis (rear side) that forms a back side appearance. It is assumed that it is accommodated in a space held between the chassis 14 and the chassis 14. The main components housed in the frame 13 and the chassis 14 include at least the liquid crystal panel 11, the optical member 15, the light guide plate 16, and the LED unit (light source unit) LU. Among these, the liquid crystal panel 11, the optical member 15, and the light guide plate 16 are held in a state of being sandwiched between the front frame 13 and the back chassis 14 in a state where they are stacked on each other. The backlight device 12 includes an optical member 15, a light guide plate 16, an LED unit LU, and a chassis 14, and is configured by removing the liquid crystal panel 11 and the frame 13 from the liquid crystal display unit LDU. The LED unit LU that constitutes the backlight device 12 includes a pair of light guide plates 16 that are paired in the frame 13 and the chassis 14 so as to sandwich the light guide plate 16 from both sides in the short side direction (Y-axis direction). Two sets are arranged side by side in the side direction (X-axis direction), and a total of four are installed. The LED unit LU includes an LED 17 that is a light source, an LED substrate (light source substrate) 18 on which the LED 17 is mounted, and a heat radiating member (heat spreader, light source mounting member) 19 to which the LED substrate 18 is attached. Hereinafter, each component will be described.

As shown in FIG. 3, the liquid crystal panel 11 has a horizontally long rectangular shape (rectangular shape, longitudinal shape) in a plan view, and a pair of

glass substrates

11a and 11b having excellent translucency are provided with a predetermined gap. The liquid crystal is sealed between the two

substrates

11a and 11b. The front side (front side) of the pair of

substrates

11a and 11b is the CF substrate 11a, and the back side (back side) is the array substrate 11b. Among these, the array substrate 11b is provided with a switching element (for example, TFT) connected to the source wiring and the gate wiring orthogonal to each other, a pixel electrode connected to the switching element, an alignment film, and the like. . Specifically, the array substrate 11b is provided with a large number of TFTs and pixel electrodes arranged side by side, and a large number of TFTs and pixel electrodes are arranged around the TFTs and pixel electrodes so as to surround a gate wiring and a source wiring in a lattice shape. It is installed. The gate wiring and the source wiring are connected to the gate electrode and the source electrode of the TFT, respectively, and the pixel electrode is connected to the drain electrode of the TFT. The array substrate 11b is provided with capacitor wirings (auxiliary capacitor wirings, storage capacitor wirings, Cs wirings) that are parallel to the gate wirings and overlap the pixel electrodes in plan view. Are arranged alternately in the Y-axis direction. On the other hand, the CF substrate 11a is provided with a color filter in which colored portions such as R (red), G (green), and B (blue) are arranged in a predetermined arrangement, a counter electrode, and an alignment film. . A polarizing plate (not shown) is disposed outside each of the

substrates

11a and 11b.

Of the pair of

substrates

11a and 11b constituting the liquid crystal panel 11, the array substrate 11b is formed to have a larger size in plan view than the CF substrate 11a, as shown in FIGS. The portions are arranged so as to protrude outward from the CF substrate 11a. Specifically, the array substrate 11b is formed to be slightly larger than the CF substrate 11a so that its outer peripheral end protrudes outside the outer peripheral end of the CF substrate 11a over the entire periphery. Of the pair of long side end portions constituting the outer peripheral end portion of the array substrate 11b, the long side end portion on the control substrate CTB side (the front side shown in FIG. 3 and the left side shown in FIG. 4) in the Y-axis direction A plurality of source side terminal portions led from the above-described source wiring are provided, and a source side flexible substrate (panel connection member, source driver) 26 is provided in each source side terminal portion as shown in FIG. It is connected. A plurality of source-side flexible substrates 26 are intermittently arranged in the X-axis direction, that is, the direction along the long-side end of the array substrate 11b, and from the long-side end of the array substrate 11b to the Y-axis direction. Projecting outward along. On the other hand, one of the pair of short side end portions constituting the outer peripheral end portion of the array substrate 11b (the back side shown in FIG. 3 and the left side shown in FIG. 5) has the gate wiring described above. In addition, a plurality of gate side terminal portions led from the capacitor wiring are provided, and a gate side flexible substrate (panel connection member, gate driver) 28 is connected to each gate side terminal portion. A plurality of gate-side flexible substrates 28 are intermittently arranged in the Y-axis direction, that is, the direction along the short-side end of the array substrate 11b, and from the short-side end of the array substrate 11b in the X-axis direction. Projecting outward along.

As shown in FIG. 3, each

flexible substrate

26 and 28 is mounted on a film-like base material made of a synthetic resin material (for example, polyimide resin) having insulating properties and flexibility, and the base material. And a driver DR having a plurality of wiring patterns (not shown) on the base material and the wiring patterns being mounted near the center of the base material. It is connected to the. The source-side flexible substrate 26 has an anisotropic conductive film (ACF) with one end thereof being connected to the source-side terminal portion of the array substrate 11b and the other end being connected to a terminal portion of a printed circuit board 27 described later. ). The printed circuit board 27 is connected to the control board CTB via a wiring member (not shown), and receives signals (scan signals to the gate wiring, data signals to the source wiring, and capacitance wiring) input from the control board CTB. , Etc.) can be transmitted to the source side flexible substrate 26. On the other hand, one end of the gate side flexible substrate 28 is crimped to the gate side terminal portion of the array substrate 11b via an anisotropic conductive film. The array substrate 11b is formed with a relay wiring (not shown) connecting the source side terminal portion and the gate side terminal portion, and the gate side terminal portion and the gate side flexible substrate 28 are connected via the relay wiring. A signal (scanning signal to the gate wiring, capacitance signal to the capacitor wiring, etc.) is transmitted from the source side flexible substrate 26 and the source side terminal portion. Thereby, the liquid crystal panel 11 displays an image on the display surface 11c based on a signal input from the control board CTB.

As shown in FIGS. 4 and 5, the liquid crystal panel 11 is placed on the front side (light emitting side) of the optical member 15 described below, and the back side surface (the outer surface of the back side polarizing plate). ) Is in close contact with the optical member 15 with almost no gap. This prevents dust and the like from entering between the liquid crystal panel 11 and the optical member 15. The display surface 11c of the liquid crystal panel 11 is composed of a display area that can display an image on the center side of the screen and a non-display area that forms a frame shape (frame shape) that surrounds the display area on the outer peripheral edge side of the screen. Become. The terminal portions and the

flexible substrates

26 and 28 described above are arranged in the non-display area.

As shown in FIG. 3, the optical member 15 has a horizontally long rectangular shape when viewed from the same plane as the liquid crystal panel 11, and the size (short side dimension and long side dimension) is the same as that of the liquid crystal panel 11. Is done. The optical member 15 is placed so as to be laminated on the front side (light emitting side) of the light guide plate 16 described below, and is disposed in a state of being sandwiched between the liquid crystal panel 11 and the light guide plate 16 described above. Each of the optical members 15 is formed in a sheet shape and three layers are laminated. Specific types of the optical member 15 include, for example, a diffusion sheet, a lens sheet, a reflective polarizing sheet, and the like, which can be appropriately selected and used.

The light guide plate 16 is made of a synthetic resin material (for example, acrylic resin such as PMMA or polycarbonate) having a refractive index sufficiently higher than air and substantially transparent (excellent translucency). As shown in FIG. 3, the light guide plate 16 has a horizontally long rectangular shape when viewed in a plan view, as in the liquid crystal panel 11 and the optical member 15, and has a plate shape that is thicker than the optical member 15. The long side direction on the surface coincides with the X-axis direction, the short side direction coincides with the Y-axis direction, and the plate thickness direction orthogonal to the main surface coincides with the Z-axis direction. As shown in FIGS. 4 and 5, the light guide plate 16 has a size (short side dimension and long side dimension) as viewed in a plane larger than that of the liquid crystal panel 11, and an end portion 16EP thereof. Are arranged so as to protrude outward from the end of the liquid crystal panel 11. Specifically, the light guide plate 16 is formed to be slightly larger than the liquid crystal panel 11 such that the end side portion 16EP protrudes outward from the outer peripheral end portion of the array substrate 11b of the liquid crystal panel 11 over the entire circumference. The light guide plate 16 is laminated on the back side of the optical member 15 and is disposed so as to be sandwiched between the optical member 15 and the chassis 14. The light guide plate 16 is arranged in such a way that it is sandwiched in the Y-axis direction by a pair of LED units LU arranged separately on both sides in the short side direction. Each light is introduced. The light guide plate 16 has a function of rising and emitting the light from the LED 17 introduced from both ends in the short side direction so as to be directed toward the optical member 15 (front side) while propagating inside. By the way, the reason why the light guide plate 16 is made larger than the liquid crystal panel 11 and the optical member 15 as described above (the reason for securing the end-side portion 16EP) is that the distance for propagating the light incident from the LED 17 is sufficient. The end side portion 16EP of the light guide plate 16 is more likely to cause unevenness in the emitted light than the central side portion, and this end side portion 16EP is more likely to cause unevenness in the emitted light. This is also because the display quality is not good when the light emitted from is used for image display.

Of the main surface of the light guide plate 16, the surface facing the front side (the surface facing the optical member 15) emits light from the inside toward the optical member 15 and the liquid crystal panel 11, as shown in FIG. It becomes the output surface 16a. Of the outer peripheral end faces adjacent to the main surface of the light guide plate 16, both end faces on the long side that are long along the X-axis direction (both end faces that the both ends in the short side direction have) are LEDs 17 ( The LED board 18) and the LED board 18) are opposed to each other with a predetermined space therebetween, and these form a pair of light incident surfaces 16b on which light emitted from the LEDs 17 is incident. The light incident surface 16b is a surface parallel to the X-axis direction and the Z-axis direction (the main plate surface of the LED substrate 18), and is a surface substantially orthogonal to the light emitting surface 16a. Further, the alignment direction of the LED 17 and the light incident surface 16b coincides with the Y-axis direction and is parallel to the light emitting surface 16a.

On the back side of the light guide plate 16, that is, the surface opposite to the light emitting surface 16a (the surface facing the chassis 14) 16c, as shown in FIGS. A light guide reflection sheet (reflection member) 20 that can be reflected and raised to the front side is provided so as to cover almost the entire area. In other words, the light guide reflection sheet 20 is disposed so as to be sandwiched between the chassis 14 and the light guide plate 16. The light guide reflection sheet 20 is made of a synthetic resin and has a white surface with excellent light reflectivity. As shown in FIG. 4, at least the short side dimension of the light guide reflection sheet 20 is larger than the short side dimension of the light guide plate 16, and both ends thereof are closer to the LED 17 than the light incident surface 16 b of the light guide plate 16. It is arranged to stick out. Light that travels obliquely from the LED 17 toward the chassis 14 side is efficiently reflected by the projecting portions (both ends on the long side) of the light guide reflection sheet 20 and directed toward the light incident surface 16 b of the light guide plate 16. It is possible to make it. It should be noted that at least one of the light exit surface 16a and the opposite surface 16c of the light guide plate 16 has a reflection part (not shown) for reflecting internal light or a scattering part (not shown) for scattering internal light. Are patterned so as to have a predetermined in-plane distribution, whereby the light emitted from the light exit surface 16a is controlled to have a uniform distribution in the surface.

Next, the configuration of the LED 17, the LED substrate 18, and the heat radiating member 19 constituting the LED unit LU will be sequentially described. As shown in FIGS. 3 and 4, the LED 17 constituting the LED unit LU has a configuration in which an LED chip is sealed with a resin material on a substrate portion fixed to the LED substrate 18. The LED chip mounted on the substrate unit has one main emission wavelength, and specifically, one that emits blue light in a single color is used. On the other hand, the resin material that seals the LED chip is dispersed and blended with a phosphor that emits a predetermined color when excited by the blue light emitted from the LED chip, and generally emits white light as a whole. It is said. In addition, as the phosphor, for example, a yellow phosphor that emits yellow light, a green phosphor that emits green light, and a red phosphor that emits red light are used in appropriate combination, or any one of them is used. It can be used alone. The LED 17 is a so-called top surface light emitting type in which the surface opposite to the mounting surface with respect to the LED substrate 18 (the surface facing the light incident surface 16b of the light guide plate 16) is the main light emitting surface 17a.

As shown in FIGS. 3 and 4, the LED substrate 18 constituting the LED unit LU is an elongated plate shape extending along the long side direction of the light guide plate 16 (X-axis direction, longitudinal direction of the light incident surface 16 b). The main surface is accommodated in the frame 13 and the chassis 14 in a posture parallel to the X-axis direction and the Z-axis direction, that is, a posture parallel to the light incident surface 16b of the light guide plate 16. The LED substrate 18 has a length dimension that is approximately half of the long side dimension of the light guide plate 16. The LED 17 having the above-described configuration is surface-mounted on the inner surface, that is, the surface facing the light guide plate 16 side (the surface facing the light guide plate 16), which is the main surface of the LED substrate 18, and this is the mounting surface 18a. Is done. A plurality of LEDs 17 are arranged in a line (linearly) in parallel on the mounting surface 18a of the LED substrate 18 along the length direction (X-axis direction) with a predetermined interval. That is, it can be said that a plurality of LEDs 17 are intermittently arranged in parallel along the long side direction at both ends on the long side of the backlight device 12. The interval between the LEDs 17 adjacent to each other in the X-axis direction, that is, the arrangement pitch of the LEDs 17 is substantially equal. Note that the arrangement direction of the LEDs 17 coincides with the length direction (X-axis direction) of the LED substrate 18. On the mounting surface 18a of the LED substrate 18, a wiring pattern (not shown) made of a metal film (such as a copper foil) that extends along the X-axis direction and connects the adjacent LEDs 17 across the LED 17 group in series. The terminal portions formed at both ends of the wiring pattern are connected to the power supply substrate PWB via wiring members such as connectors and electric wires, so that driving power is supplied to each LED 17. It has become. The LED boards 18 that are paired with the light guide plate 16 in between are housed in the frame 13 and the chassis 14 with the mounting surfaces 18a of the LEDs 17 facing each other, and are thus mounted on the paired LED boards 18 respectively. The main light emitting surfaces 17a of the LEDs 17 are opposed to each other, and the optical axes of the LEDs 17 substantially coincide with the Y-axis direction. Moreover, the base material of the LED board 18 is made of metal such as aluminum, for example, and the wiring pattern (not shown) described above is formed on the surface thereof via an insulating layer. In addition, as a material used for the base material of LED board 18, insulating materials, such as a ceramic, can also be used.

The heat dissipating member 19 constituting the LED unit LU is made of a metal having excellent thermal conductivity such as aluminum as shown in FIGS. 3 and 4. The heat dissipating member 19 includes an LED attachment portion (light source attachment portion) 19a to which the LED substrate 18 is attached, and a heat dissipating portion 19b in surface contact with the plate surface of the chassis 14, and these have a bent shape having a substantially L-shaped cross section. There is no. The length of the heat dissipation member 19 is approximately the same as the length of the LED substrate 18 described above. The LED mounting portion 19a constituting the heat radiating member 19 has a plate shape parallel to the plate surface of the LED substrate 18 and the light incident surface 16b of the light guide plate 16, and the long side direction is the X-axis direction and the short side direction. Are coincident with the Z-axis direction and the thickness direction is coincident with the Y-axis direction. The LED board 18 is attached to the inner plate surface of the LED mounting portion 19a, that is, the plate surface facing the light guide plate 16 side. The LED mounting portion 19 a has a long side dimension substantially equal to the long side dimension of the LED substrate 18, but the short side dimension is larger than the short side dimension of the LED substrate 18. In addition, both end portions in the short side direction of the LED mounting portion 19a protrude outward from the both end portions of the LED substrate 18 along the Z-axis direction. An outer plate surface of the LED mounting portion 19a, that is, a plate surface opposite to the plate surface on which the LED substrate 18 is mounted is opposed to a screw mounting portion (fixing member mounting portion) 21 included in the frame 13 described later. ing. That is, the LED attachment portion 19 a is arranged in a form that is interposed between the screw attachment portion 21 of the frame 13 and the light guide plate 16. The LED mounting portion 19a extends in the Z-axis direction (the overlapping direction of the liquid crystal panel 11, the optical member 15, and the light guide plate 16) from the inner end of the heat radiating portion 19b described below, that is, the end on the LED 17 (light guide plate 16) side. Along the front side, that is, the frame 13 side.

As shown in FIGS. 3 and 4, the heat radiating portion 19 b has a plate shape parallel to the plate surface of the chassis 14, and the long side direction is the X-axis direction and the short side direction is the Y-axis direction. The vertical direction coincides with the Z-axis direction. The heat dissipating part 19b protrudes from the end on the back side of the LED mounting part 19a, that is, from the end on the chassis 14 side to the outside along the Y-axis direction, that is, toward the side opposite to the light guide plate 16 side. . The long side dimension of the heat dissipating part 19b is substantially the same as that of the LED mounting part 19a. Of the heat radiating portion 19 b, the entire plate surface on the back side, that is, the plate surface facing the chassis 14 side, is in surface contact with the plate surface of the chassis 14. In addition, the front plate surface of the heat radiating portion 19b, that is, the plate surface opposite to the contact surface with respect to the chassis 14 is opposed to a screw mounting portion 21 included in the frame 13 to be described later, and It is in contact with the protruding end surface. That is, the heat dissipating part 19b is arranged in such a manner as to be sandwiched (intervened) between the screw attaching part 21 of the frame 13 and the chassis 14. As a result, the heat generated from the LED 17 when it is turned on is transmitted to the frame 13 having the chassis 14 and the screw mounting portion 21 via the LED substrate 18, the LED mounting portion 19a, and the heat radiating portion 19b. It is efficiently dissipated to the outside of the display device 10 and it is difficult to stay inside. The heat dissipating part 19b is held in an attached state by a screw member (fixing member) SM with respect to the screw attaching part 21, and has an insertion hole 19b1 for passing the screw member SM. Yes.

Subsequently, the configuration of the frame 13 and the chassis 14 that form the appearance member and the holding member HM will be described. Both the frame 13 and the chassis 14 are made of metal such as aluminum, for example, and mechanical strength (rigidity) and thermal conductivity are both higher than when the frame 13 and the chassis 14 are made of synthetic resin. That is, it can be said that both the materials constituting the frame 13 and the chassis 14 are light shielding materials having light shielding properties. As shown in FIG. 3, the frame 13 and the chassis 14 are stacked on each other while accommodating the LED units LU paired at both ends (both ends on both long sides) in the short side direction. The liquid crystal panel 11, the optical member 15, and the light guide plate 16 are held so as to be sandwiched between the front side and the back side.

As shown in FIG. 3, the frame 13 has a horizontally long frame shape as a whole so as to surround the display area on the display surface 11 c of the liquid crystal panel 11. The frame 13 includes a panel pressing portion 13a that is parallel to the display surface 11c of the liquid crystal panel 11 and presses the liquid crystal panel 11 from the front side, and a side wall portion 13b that protrudes from the outer peripheral side portion of the panel pressing portion 13a toward the back side. The cross-sectional shape is substantially L-shaped. Among these, the panel pressing portion 13a forms a horizontally long frame shape following the outer peripheral side portion (non-display area, frame portion) of the liquid crystal panel 11, and presses the outer peripheral side portion of the liquid crystal panel 11 from the front side over almost the entire circumference. Is possible. In addition to the outer peripheral portion of the liquid crystal panel 11, the panel pressing portion 13 a includes the optical member 15 and the outer peripheral portion of the light guide plate 16 disposed on the outer side in the radial direction than the outer peripheral portion of the liquid crystal panel 11, and each LED unit. The LU also has a width that can be covered from the front side. The outer surface of the panel pressing portion 13a facing the front side (the surface opposite to the surface facing the liquid crystal panel 11) is exposed to the outside on the front side of the liquid crystal display device 10 like the display surface 11c of the liquid crystal panel 11. The front surface of the liquid crystal display device 10 is configured together with the display surface 11 c of the panel 11. On the other hand, the side wall part 13b has comprised the substantially square cylinder shape which protrudes toward the back side from the outer peripheral side part (specifically outer peripheral edge part) in the panel pressing part 13a. The side wall portion 13b surrounds the liquid crystal panel 11, the optical member 15, the light guide plate 16, and each LED unit LU accommodated in the entire circumference, and can also surround the back side chassis 14 over almost the entire circumference. . The side wall portion 13 b has an outer surface along the circumferential direction of the liquid crystal display device 10 exposed to the outside in the circumferential direction of the liquid crystal display device 10, and constitutes a top surface, a bottom surface, and both side surfaces of the liquid crystal display device 10.

As shown in FIG. 8, the frame-shaped frame 13 having the basic configuration described above is formed by assembling four divided frames 13S divided for each side (each long side portion and each short side portion). Is done. Specifically, the divided frame 13S includes a pair of long side divided frames 13SL constituting the long side portions of the frame 13 (panel pressing portion 13a and side wall portion 13b) and a pair of short sides constituting the short side portions. The side-side divided frame 13SS is used. The long side divided frame 13SL is made of a prismatic material having a substantially L-shaped cross section extending along the X axis direction, whereas the short side divided frame 13SS is substantially cross sectional extending along the Y axis direction. Made of L-shaped prismatic material. As a result, when manufacturing each divided frame 13S, it is possible to employ a manufacturing method such as extrusion molding of a metal material. For example, the frame-like frame 13 is temporarily manufactured by a manufacturing method such as cutting out of the metal material. Compared with the case of manufacturing, the manufacturing cost can be reduced. Adjacent long-side divided frames 13SL and short-side divided frames 13SS constitute a frame-like frame 13 by connecting ends in their extending directions. As shown in FIG. 8, each end portion, which is a connecting portion of the long side divided frame 13SL and the short side divided frame 13SS (the joint of the frame 13), is both in the X-axis direction and the Y-axis direction when viewed in plan. In detail, it is shaped to follow a straight line connecting the inner end position and the outer end position at each corner of the panel pressing portion 13a. The long side divided frame 13SL covers each LED unit LU in addition to the liquid crystal panel 11, the optical member 15, and the light guide plate 16 (see FIG. 6), and thus the short side divided that does not cover the LED unit LU. Compared to the frame 13SS (see FIG. 9), it is formed relatively wide.

As shown in FIGS. 4 and 5, a screw mounting portion (fixing member mounting) to which a screw member (fixing member) SM is mounted at a position closer to the inner side (closer to the light guide plate 16) than the side wall portion 13b in the panel pressing portion 13a. Part) 21 is integrally formed. The screw attachment portion 21 projects from the inner surface of the panel pressing portion 13a toward the back side along the Z-axis direction, and extends along each side (X-axis direction or Y-axis direction) of the panel pressing portion 13a. It has an almost block shape. The screw attachment portion 21 is provided on each side of the panel pressing portion 13a, and each has a length dimension over the entire length of each side. As shown in FIG. 8, the screw mounting portion 21 is provided separately for each divided frame 13S constituting the frame 13, and when each divided frame 13S is assembled, the entire side of the side wall portion 13b having a rectangular tube shape is formed. It is assumed that the inner surface forms a frame shape continuous over the entire circumference. As shown in FIGS. 4 and 5, the screw attachment portion 21 is formed with a groove portion 21 a that opens toward the back side and can fasten the screw member SM. The groove portion 21a is formed over substantially the entire length along the length direction of the screw attachment portion 21, and has a width dimension that is slightly smaller than the shaft portion of the screw member SM. The screw attachment portion 21 is arranged in the form of being interposed between the panel pressing portion 13a of the frame 13 and the chassis 14 in the Z-axis direction.

As shown in FIG. 4, the pair of screw attachment portions 21 on the long side is provided between the side wall portions 13 b of the frame 13 and the LED attachment portions 19 a of the heat radiating members 19 constituting the LED units LU in the Y-axis direction. It is arranged in an intervening manner, and a predetermined interval is provided between the LED mounting portion 19a. Of the pair of heat radiating members 19, the space between the heat radiating member 19 and the screw mounting portion 21 to which the heat radiating member 19 is attached is shown in FIG. As shown in FIG. 7, the board accommodation space BS can accommodate the printed circuit board 27. That is, the printed circuit board 27 is interposed between the screw attachment portion 21 and the LED attachment portion 19a. The printed circuit board 27 is made of a synthetic resin and has a horizontally long plate shape extending along the length direction (X-axis direction) of the screw mounting portion 21 and the LED mounting portion 19a. A posture parallel to the plate surface outside the LED mounting portion 19a (the side opposite to the LED substrate 18), in other words, the long side direction is the X axis direction, the short side direction is the Z axis direction, and the thickness direction is Y. The substrate is accommodated in the above-described substrate accommodation space BS in a posture matched with the axial direction. A plurality of source-side flexible substrates 26 are intermittently arranged along the long side direction of the printed circuit board 27, and the other ends are connected to the printed circuit board 27, respectively. The source side flexible substrate 26 connected to the printed circuit board 27 and the array substrate 11b of the liquid crystal panel 11 crosses the LED mounting portion 19a, the LED substrate 18 and the LED 17 along the Y-axis direction. Further, the printed circuit board 27 has a connector portion (not shown for both FPCs) to which one end side of the FPC is inserted and connected, and the other end side of the FPC is an FPC insertion hole (see FIG. (Not shown) is pulled out of the back side of the chassis 14 and connected to the control board CTB.

As shown in FIGS. 4 and 5, a light guide plate support portion 23 that supports the light guide plate 16 from the front side (display surface 11 c side) is located in the panel pressing portion 13 a at a position closer to the inner side than the screw mounting portion 21. It is integrally formed. The light guide plate support portion 23 protrudes from the inner surface of the panel pressing portion 13a toward the back side (light guide plate 16) along the Z-axis direction (the protruding direction of the screw mounting portion 21), and each side of the panel pressing portion 13a. Is formed in an elongated, substantially block shape extending along the line. The light guide plate support portion 23 is provided on each side of the panel pressing portion 13a and has a length dimension over the entire length of each side. As shown in FIG. 8, the light guide plate support portion 23 is divided into each divided frame 13 S constituting the frame 13 as in the case of the screw mounting portion 21 described above, and each divided frame 13 S is assembled. As a whole, the panel pressing portion 13a (light guide plate 16) has a substantially frame shape arranged over the entire circumference. As shown in FIGS. 4 and 5, the light guide plate support portion 23 overlaps with the end portion 16EP of the light guide plate 16 protruding outward from the liquid crystal panel 11 in a plan view (viewed from the display surface 11c side). The protruding front end surface of the light guide plate 16 is in contact with the front side surface of the light guide plate 16, that is, the light emitting surface 16a. Therefore, the light guide plate support part 23 can be supported from the front side (display surface 11c side) with the light guide plate 16 sandwiched between the light guide plate 16 and the chassis 14 described later, and has a light guide plate support function. . The light guide plate 16 is pressed from the front side by the light guide plate support portion 23 whose end side portion 16EP has a substantially frame shape over the entire circumference. Since the long side portion of the end side portion 16EP of the light guide plate 16 with which the light guide plate support portion 23 abuts is an end portion having a light incident surface 16b for the LED 17, the light guide plate support portion 23 causes the light guide plate 16 to move. By supporting, it is possible to stably maintain the positional relationship between the LED 17 and the light incident surface 16b in the Z-axis direction.

A pair of long-side light guide plate support portions 23 provided on the long-side divided frame 13SL and extending along the long side of the panel pressing portion 13a are provided between the liquid crystal panel 11 and the LEDs 17, as shown in FIG. It is arranged in an intervening form. Specifically, the pair of long-side light guide plate support portions 23 closes the spaces between the LED 17 and the end surfaces of the liquid crystal panel 11 and the optical member 15 on the LED 17 side, so that the light from the LED 17 can be transmitted. In addition, it has a light shielding function to prevent direct incidence on the end surfaces of the liquid crystal panel 11 and the optical member 15 without passing through the light guide plate 16, and also functions as a “light shielding part”. Of the pair of long-side light guide plate support portions 23, the light guide plate support portion 23 in a positional relationship overlapping with the source-side flexible substrate 26 in a plan view is shown in FIGS. A plurality of source-side flexible board insertion groove portions 23a for inserting the source-side flexible board 26 are formed in the form of being intermittently juxtaposed in parallel along the X-axis direction. To match.

As shown in FIGS. 4 and 5, a pressing protrusion 24 that protrudes to the back side, that is, the liquid crystal panel 11 side, is integrally formed on the inner edge portion of the panel pressing portion 13 a. The pressing protrusion 24 has a cushioning material 24a attached to its protruding tip surface, and the liquid crystal panel 11 can be pressed from the front side via the cushioning material 24a. As shown in FIG. 8, the pressing protrusion 24 and the cushioning material 24 a are configured to extend along each side in each divided frame 13 S constituting the frame 13, similarly to the above-described screw mounting portion 21. Also, each side is divided and provided, and when each divided frame 13S is assembled, it forms a frame shape that is arranged over the entire circumference at the inner peripheral edge of the panel pressing portion 13a.

As shown in FIG. 3, the chassis 14 has a generally horizontally shallow shallow plate shape as a whole so as to cover the light guide plate 16, the LED unit LU, and the like over almost the entire region from the back side. The outer surface of the chassis 14 facing the back side (the surface opposite to the surface facing the light guide plate 16 and the LED unit LU) is exposed outside the back side of the liquid crystal display device 10 and constitutes the back surface of the liquid crystal display device 10. is doing. The chassis 14 has a horizontally long bottom plate portion 14a similar to the light guide plate 16, and a pair of LEDs that protrude from the ends of both long sides of the bottom plate portion 14a to the back side and accommodate the LED unit LU. And an accommodating portion (light source accommodating portion) 14b.

As shown in FIGS. 3 and 4, the bottom plate portion 14 a can receive most of the center side of the light guide plate 16 in the short side direction (portion excluding both end portions in the short side direction) from the back side. It can be said that it has a flat plate shape and constitutes a receiving portion for the light guide plate 16. As shown in FIG. 5, both end portions of the bottom plate portion 14 a in the long side direction extend outward from both end portions in the long side direction of the light guide plate 16, and the frame 13 and the chassis 14. Is a pair of screw mounting portions (fixing member mounting portions) 14a1 to which externally mounted screw members (fixing members) SM are fixed.

As shown in FIGS. 3 and 4, the LED accommodating portion 14b is arranged in such a manner that the bottom plate portion 14a is sandwiched from both sides in the short side direction, and is retracted to the back side by one step from the bottom plate portion 14a. Can be accommodated. The LED housing portion 14b is parallel to the bottom plate portion 14a and has a pair of screw mounting portions (fixing member mounting portions) 14b1 to which the screw members SM are mounted from the outside, and a pair of rises from both ends of the screw mounting portions 14b1 toward the front side. It is comprised from the side plate part 14b2, and the inner side plate part 14b2 of the pair of side plate parts 14b2 is connected to the bottom plate part 14a. The screw mounting portion 14b1 in the LED housing portion 14b is arranged in a state in which the heat radiating portion 19b of the heat radiating member 19 constituting the LED unit LU is in surface contact with the inner surface thereof. In addition, the outer side plate portion 14b2 in the LED housing portion 14b is inserted into a gap provided between the long-side screw mounting portion 21 and the side wall portion 13b, so that the chassis 14 is Y with respect to the frame 13. It has a function of positioning in the axial direction.

As described above, as shown in FIG. 3, the pair of screw mounting portions 14 b 1 constituting the LED housing portion 14 b are provided on both long sides of the outer peripheral side portion of the chassis 14 according to the present embodiment. A pair of screw mounting portions 14a1 constituting the bottom plate portion 14a are respectively formed on the side portions. A plurality of screw insertion holes 25 through which the screw members SM pass are respectively formed in the pair of screw mounting portions 14a1 included in the bottom plate portion 14a and the pair of screw mounting portions 14b1 included in the LED housing portion 14b. The screw mounting portions 14a1 and 14b1 are arranged so as to overlap the screw mounting portion 21 of the frame 13 in plan view, and the screw insertion holes 25 formed in the screw mounting portions 14a1 and 14b1 are screw-attached. It communicates with the groove 21 a of the portion 21. Therefore, the screw member SM passes through the screw insertion hole 25 along the Z-axis direction (the overlapping direction of the liquid crystal panel 11, the optical member 15, and the light guide plate 16) from the back side of the chassis 14 (the side opposite to the display surface 11c side). At the same time, it is fastened to the groove portion 21a of the screw mounting portion 21 with the screw mounting portions 14a1 and 14b1 interposed therebetween. When the screw member SM is tightened, a screw groove is formed in the groove portion 21a by a thread formed on the shaft portion of the screw member SM. The screw insertion holes 25 formed in the pair of screw mounting portions 14b1 of the LED housing portion 14b have screw fastening holes for fastening that are large enough to pass only the shaft portion of the screw member SM, as shown in FIG. As shown in FIG. 7, there are a heat-dissipating member screw insertion hole 25B large enough to pass the head in addition to the shaft portion of the screw member SM, and the screw member SM passed through the former is the heat dissipating portion 19b. The housing bottom plate portion 14b1 is fastened together and attached to the screw attachment portion 21, whereas the screw member SM passed through the latter functions to attach only the heat radiating portion 19b to the screw attachment portion 21.

By the way, as described above, the gate-side flexible substrate 28 protrudes outward at one short side end of the outer peripheral end of the liquid crystal panel 11 according to the present embodiment, as described above. The gate side flexible substrate 28 is disposed at a position overlapping the end portion 16EP on the short side of the light guide plate 16 in a plan view. On the other hand, since the light guide plate support portion 23 has a substantially frame shape as a whole and supports the end side portion 16EP of the light guide plate 16 from the front side, the light guide plate support portion 23 overlaps the end side portion 16EP in plan view over substantially the entire circumference. It is arranged at the position to do. Therefore, the portion of the light guide plate support 23 that supports the end side portion 16EP that overlaps the gate side flexible substrate 28 in plan view, that is, the light guide plate support that forms the left short side shown in FIGS. The portion 23A needs to have a structure that avoids interference with the gate-side flexible substrate 28. In the following description, when the portion of the light guide plate support portion 23 on the side of the gate-side flexible substrate 28 is described, the suffix 23 is attached to the reference numeral 23. Here, if a method of avoiding mutual interference by arranging the light guide plate support portion so as to be shifted outward with respect to the gate side flexible substrate 28, the frame portion of the liquid crystal display device is wide. As a result, a problem arises that the narrow frame cannot be maintained, and if this is to be avoided, the width of the light guide plate support portion cannot be secured sufficiently, and the mechanical force necessary to support the light guide plate 16 is not achieved. There was a possibility that the problem that the strength could not be obtained occurred.

Therefore, in the present embodiment, the light guide plate support portion 23A on the gate side flexible substrate 28 side is formed with a gate side flexible substrate insertion groove 29 through which the gate side flexible substrate 28 passes, as shown in FIGS. Thus, while avoiding the interference, the light shielding part 30 having a light shielding function at a position adjacent to the outer side opposite to the liquid crystal panel 11 side with respect to the gate side flexible substrate 28 is the light guide plate support part 23A described above. It is provided separately (in a separate form). Specifically, if the gate-side flexible board insertion groove 29 is formed in the light guide plate support 23A, interference between the gate-side flexible board 28 and the light guide plate support 23A can be avoided. Since the first space S1 facing the end of the liquid crystal panel 11 and the second space S2 facing the end surface 16EF of the end-side portion 16EP overlapping the gate-side flexible substrate 28 in plan view in the light guide plate 16 communicate with each other. The light leaking from the end face 16EF of the portion 16EP into the second space S2 enters the first space S1 side through the gate side flexible substrate insertion groove 29, and is connected to the gate side flexible substrate 28 at the end of the liquid crystal panel 11. There is a concern that the light will enter directly.

On the other hand, the panel pressing portion 13a of the frame 13 and the light guide plate on the outer side (the left side shown in FIGS. 9 to 11) opposite to the liquid crystal panel 11 side with respect to the light guide plate support portion 23A and the gate side flexible substrate 28. Since the light shielding portion 30 is formed so as to straddle the end portion 16EP on the short side of the 16 side, the inner first space S1 and the outer second space S2 are optically separated by the light shielding portion 30. Are classified as independent. Thereby, the light existing in the outer second space S 2 is blocked from entering the inner first space S 1, so that the gate side flexible substrate 28 is connected to the end of the liquid crystal panel 11. Light leakage can be prevented. Note that the end face 16EF of the end portion 16EP that overlaps the gate-side flexible substrate 28 in plan view of the light guide plate 16 is adjacent to the light incident face 16b (the face facing the LED 17) that is the end face on the long side in the circumferential direction. It is in a positional relationship.

On the other hand, as shown in FIGS. 9 to 11, the light guide plate support portion 23 A is arranged side by side along the short side edge portion (Y-axis direction) of the liquid crystal panel 11 with respect to the gate side flexible substrate 28. In other words, since the positional relationship overlaps with the gate-side flexible substrate 28 in the X-axis direction, when securing the width dimension of the light guide plate support 23A, the liquid crystal panel 11 extends from the end on the short side in the X-axis direction. The protruding dimension of the gate side flexible substrate 28 protruding along the line can be used. Accordingly, the width dimension of the light guide plate support portion 23A and the mechanical strength thereof can be sufficiently secured without expanding the frame portion of the liquid crystal display device 10, so that the end portion 16EP of the light guide plate 16 can be stably provided. The liquid crystal display device 10 can be held in a narrow frame while being supported. Specifically, the width dimension of the light guide plate support portion 23 A is smaller than the projecting dimension of the gate-side flexible substrate 28 from the end portion of the liquid crystal panel 11, but larger than the width dimension of the light shielding portion 30. The light guide plate support portion 23A is integrally formed with the frame 13 as described above, and is disposed so as to be interposed between the panel pressing portion 13a and the end portion 16EP on the short side of the light guide plate 16. ing. The light guide plate support portion 23A protrudes from the panel pressing portion 13a along the Z-axis direction toward the back side, that is, the light guide plate 16 side, and the protruding end surface is the plate surface (light emitting surface) of the end side portion 16EP of the light guide plate 16. 16a). Since the light guide plate support portion 23A is a part of the frame 13 made of a light-shielding material, the light guide plate support portion 23A is arranged so as to straddle the end side portion of the light guide plate 16 from the panel pressing portion 13a of the frame 13 as described above. The inner first space S1 and the outer second space S2 can be partitioned so as to be optically independent in the non-forming range of the light shielding portion 30. That is, the light guide plate support portion 23 A has a light shielding function in addition to the light guide plate support function, and complements the light shielding function of the light shielding portion 30.

Next, the light shielding unit 30 will be described in detail. Since the light shielding portion 30 is integrally formed with the frame 13, it is made of a light shielding material. As shown in FIGS. 9 to 11, the light shielding portion 30 protrudes from the panel pressing portion 13 a of the frame 13 along the Z-axis direction toward the back side, that is, toward the light guide plate 16, and the protruding end surface thereof is the light guide plate 16. Of the plate surface (light emitting surface 16a) of the end side portion 16EP, the position is shifted in the X-axis direction and the Y-axis direction with respect to the light guide plate support portion 23A, that is, the non-formation range of the light guide plate support portion 23A. It is touched. That is, the light shielding part 30 has a light guide plate support function in addition to the light shielding function, and complements the light guide plate support function of the light guide plate support part 23A. In the panel pressing portion 13a, the light shielding portion 30 is disposed at a position shifted in the X axis direction and the Y axis direction with respect to the light guide plate support portion 23A in a plan view, that is, a staggered position.

As shown in FIG. 9, the light-shielding portion 30 has a vertically long block shape parallel to the Y-axis direction (the direction along the end of the liquid crystal panel 11 to which the gate-side flexible substrate 28 is connected) as viewed in a plane. However, the width dimension is smaller than the width dimension of the light guide plate support portion 23A. The light shielding unit 30 is set such that the length dimension in the Y-axis direction is larger than the length dimension of the gate-side flexible substrate 28. This makes it difficult for light from the first space S 1 side to enter the connection portion of the gate-side flexible substrate 28 at the end of the liquid crystal panel 11. In addition, the light shielding part 30 has an overlapping (overlapping) positional relationship with respect to the light guide plate support part 23A disposed inside in the X-axis direction in the Y-axis direction, that is, the lengthwise end part 30a of the light-shielding part 30 is guided. The optical plate support portion 23A is arranged on the outer side in the X axis direction so as to face the end portion 23Aa on the gate side flexible substrate insertion groove portion 29 side. Accordingly, the overlap portions 30a and 23Aa in the light shielding portion 30 and the light guide plate support portion 23A are provided with a double light shielding function and a light guide plate support function. ing. The light shielding portion 30 mainly has a light shielding function, and the light guide plate support function is an auxiliary function to the last. Therefore, when setting the width dimension, the light shield plate support function is larger than the width dimension of the light guide plate support portion 23A. It is getting smaller. Therefore, even if the light shielding portion 30 is arranged on the outer side opposite to the liquid crystal panel 11 side with respect to the light guide plate support portion 23A and the gate side flexible substrate 28, the width dimension is very small. It is difficult to become a factor of expanding the frame portion of the device 10, and thus the liquid crystal display device 10 can be kept in a narrow frame.

This embodiment has the structure as described above, and its operation will be described next. The liquid crystal display device 10 is manufactured by separately assembling each component (frame 13, chassis 14, liquid crystal panel 11, optical member 15, light guide plate 16, LED unit LU, etc.) manufactured separately. . At the time of assembly, all the components are assembled in a posture that is upside down with respect to the Z-axis direction from the posture shown in FIGS. 4 and 5. First, as shown in FIGS. 12 and 13, the frame 13 of the components is set on a work table (not shown) with the back surface facing upward in the vertical direction. The frame 13 is formed in a frame shape as a whole by connecting the four divided frames 13S to each other in advance.

As shown in FIGS. 12 and 13, the liquid crystal panel 11 has a source-side flexible board 26 and a printed board 27 connected in advance to one end portion on the long side, and a gate-side flexible board 28 connected to one end portion on the short side. It is used for assembly. The liquid crystal panel 11 is assembled to the frame 13 set in the above-described posture while the CF substrate 11a is in the vertical direction and the array substrate 11b is in the vertical direction. At this time, as shown in FIG. 12, the printed circuit board 27 is placed on the screw mounting portion 21 while the plate surface is positioned along the surface of the screw mounting portion 21 on the long side of the frame 13 facing the liquid crystal panel 11 side. It is attached. For this reason, the source-side flexible substrate 26 is bent into a substantially L shape in the middle. In this attachment process, each source-side flexible board 26 is inserted while being positioned in the X-axis direction with respect to each source-side flexible board insertion groove 23a of the light guide plate support 23 that is in a positional relationship overlapping in plan view. The On the other hand, as shown in FIG. 13, each gate-side flexible board 28 is Y with respect to each gate-side flexible board insertion groove 29 of the light guide plate support 23A on the short side, which is in a positional relationship overlapping in plan view. It is inserted while being positioned in the axial direction. Further, the liquid crystal panel 11 is buffered by receiving the front surface of the liquid crystal panel 11 by a buffer material 24 a attached to the pressing protrusion 24 in the frame 13. Subsequently, the optical members 15 are sequentially stacked and arranged on the back surface of the liquid crystal panel 11 in order.

On the other hand, as shown in FIG. 12, the LED unit LU in which the LED 17, the LED substrate 18 and the heat radiating member 19 are integrated in advance is assembled to the frame 13. The LED unit LU is configured such that the LED 17 faces the center side (inner side) of the frame 13 and the heat radiation portion 19b of the heat radiation member 19 faces the screw mounting portion 21 of the frame 16 so that each long side of the frame 13 It is attached to the screw mounting portion 21 on the side. In a state where each LED unit LU is attached to each screw attachment portion 21, each insertion hole 19 b 1 included in the heat radiating portion 19 b is communicated with the groove portion 21 a of the screw attachment portion 21. In addition, regarding the pair of LED units LU that are in a positional relationship overlapping with the source-side flexible substrate 26 in a plan view, when the heat dissipating member 19 is attached to the screw attachment portion 21, the LED attachment portion 19 a A board accommodation space BS is formed between the screw attachment portion 21 and the printed board 27. After the LED unit LU is attached to the screw attachment portion 21 in this manner, the screw member SM is subsequently threaded into the groove portion 21a of the screw attachment portion 21 through the predetermined insertion hole 19b1 in the heat radiating portion 19b from the back side. Since the heat radiating portion 19b of the heat radiating member 19 is sandwiched between the head portion of the screw member SM and the screw mounting portion 21, the LED unit LU has a screw mounting portion at a stage before the chassis 14 described below is assembled. 21 is held in an attached state (see FIG. 7). The timing for assembling the LED unit LU to the frame 13 may be before the optical member 15 is assembled or before the liquid crystal panel 11 is assembled.

When the operation of screwing the LED unit LU to the screw mounting portion 21 is finished, as shown in FIGS. 12 and 13, the light guide plate 16 is directly placed on the back surface of the optical member 15 arranged on the back side. Laminate and arrange. At this time, the end portion 16EP of the light guide plate 16 protruding outward from the end portion of the liquid crystal panel 11 is supported by the light guide plate support portion 23 of the frame 13 from the front side, that is, from the lower side in the vertical direction during assembly. Since the light guide plate support portion 23 has a substantially frame shape following the outer shape of the light guide plate 16 as a whole, the end portion 16EP of the light guide plate 16 is supported by the light guide plate support portion 23 over substantially the entire circumference. become. At this time, of the end side portion 16EP of the light guide plate 16, the end side portion 16EP that overlaps the gate side flexible substrate 28 in plan view is supported from the front side by the light shielding portion 30 in addition to the light guide plate support portion 23A. When the assembly of the light guide plate 16 is completed, an operation of successively laminating the light guide reflection sheet 20 on the surface 16c of the light guide plate 16 opposite to the light exit surface 16a is performed.

After the liquid crystal panel 11, the optical member 15, the light guide plate 16, and the LED unit LU are assembled to the frame 13 as described above, the operation of assembling the chassis 14 is subsequently performed. As shown in FIGS. 12 and 13, the chassis 14 is assembled to the frame 13 in a state where the surface on the front side faces the lower side in the vertical direction. At this time, by inserting the housing side plate portions 14b2 outside the LED housing portions 14b of the chassis 14 into the gaps between the side wall portions 13b on both long sides of the frame 13 and the screw mounting portions 21, the frame 13, the chassis 14 is positioned in the Y-axis direction. In the assembling process, the heads of the screw members SM previously attached to the heat radiating member 19 and the screw attaching portion 21 are passed through the respective heat radiating member screw insertion holes 25B in both the LED housing portions 14b of the chassis 14 (FIG. 7). See). And the bottom plate part 14a of the chassis 14 is the light guide plate 16 (light guide reflection sheet 20), each LED mounting part 14a1 of the bottom plate part 14a is each screw mounting part 21, and the LED mounting part 14b1 of each LED accommodating part 14b. Each screw insertion hole 25 included in the LED mounting portion 14a1 of the bottom plate portion 14a and each screw for tightening included in the LED mounting portion 14b1 of each LED housing portion 14b when the heat dissipation portions 19b of the respective heat radiating members 19 are in contact with each other. The screw member SM is passed through the insertion hole 25 A from the back side, and the screw member SM is screwed into the groove portion 21 a of the screw attachment portion 21. With this screw member SM, the LED unit LU and the chassis 14 are held attached to the screw attachment portion 21 (see FIG. 6). Since each screw member SM attached in this way is arranged on the back side of the chassis 14 constituting the appearance of the back side of the liquid crystal display device 10, the front side, that is, the user side who uses the liquid crystal display device 10. Therefore, the liquid crystal display device 10 has a clean appearance and a high design.

As described above, the assembly of the liquid crystal display unit LDU is completed. Thereafter, the stand mounting member STA and the various substrates PWB, MB, and CTB are assembled on the back side of the liquid crystal display unit LDU, and then the stand ST and the cover member CV are assembled, whereby the liquid crystal display device 10 and the television receiver TV. Is manufactured. The liquid crystal display device 10 manufactured in this way has a liquid crystal panel in addition to a frame 13 that holds the liquid crystal panel 11 from the display surface 11c side and a chassis 14 that constitutes the backlight device 12, respectively. 11 and the optical member 15 are directly laminated, so that the frame 13 and the chassis 14 are separated from each other by a synthetic resin cabinet or the liquid crystal panel 11 and the optical member 15 as in the prior art. Compared to those having a panel receiving member that keeps them in a non-contact manner, the number of parts and assembly man-hours are reduced, so that the manufacturing cost is reduced and the thickness and weight are reduced.

When the power supply of the liquid crystal display device 10 manufactured as described above is turned on, as shown in FIG. 4, various signals are received from the control board CTB by receiving power from the power board PWB, and the printed board 27 and each flexible board. 26 and 28 (each driver DR) is supplied to the liquid crystal panel 11 and its driving is controlled, and each LED 17 constituting the backlight device 12 is driven. The light from each LED 17 is guided by the light guide plate 16 and then transmitted through the optical member 15 so that the light is converted to a uniform plane light and then irradiated to the liquid crystal panel 11. An image is displayed. The operation of the backlight device 12 will be described in detail. When each LED 17 is turned on, the light emitted from each LED 17 enters the light incident surface 16b of the light guide plate 16 as shown in FIG. The light incident on the light incident surface 16b is totally reflected at the interface with the external air layer in the light guide plate 16 or is reflected by the light guide reflection sheet 20 and is propagated through the light guide plate 16. The optical member 15 is emitted from the light exit surface 16a by being reflected or scattered by a reflection unit or a scattering unit (not shown).

Here, in the liquid crystal display device 10 according to this embodiment, the liquid crystal panel 11 is directly laminated on the light guide plate 16 and the optical member 15, and the panel receiving member is interposed as in the related art. Absent. Therefore, when this panel receiving member is simply abolished, the light emitted from the end face 16EF of the end portion 16EP disposed outside the end portion of the liquid crystal panel 11 in the light guide plate 16 is reflected on the liquid crystal panel 11. There is a possibility that light leakage may occur due to direct incidence on the end. In this regard, the light guide plate support 23 having a substantially frame shape formed on the frame 13 is brought into contact with the end side portion EP of the light guide plate 16 except for a part thereof, so that the liquid crystal panel Light leakage to the end of 11 can be prevented.

However, since the gate-side flexible substrate insertion groove 29 for inserting the gate-side flexible substrate 28 is formed in the light guide plate support portion 23 A that is in a positional relationship overlapping with the gate-side flexible substrate 28 in plan view, the liquid crystal Regarding the portion of the end portion of the panel 11 where the gate side flexible substrate 28 is connected, the light emitted from the end face 16EF of the end portion 16EP of the light guide plate 16 is easily incident. In this regard, in the present embodiment, as shown in FIGS. 9 to 11, the light shielding portion 30 is provided so as to be arranged on the outer side opposite to the liquid crystal panel 11 side with respect to the gate side flexible substrate 28. The light emitted from the end surface 16EF of the end portion 16EP of the light guide plate 16 can be suitably blocked from directly entering the connection portion of the gate side flexible substrate 28 at the end portion of the liquid crystal panel 11. Specifically, the light shielding portion 30 is arranged in such a manner as to partition the first space S1 where the end portion of the liquid crystal panel 11 faces and the second space S2 where the end face 16EF of the end portion 16EP of the light guide plate 16 faces. Since the spaces S1 and S2 are optically independent from each other, the light leaking from the end face 16EF to the second space S2 can be blocked from entering the first space S1, thereby the end of the liquid crystal panel 11 It is possible to prevent light from entering the connecting portion of the gate side flexible substrate 28 in FIG. In addition, the light shielding portion 30 has a wider range in the length direction (Y-axis direction) than the gate-side flexible substrate 28, and the end portion 30a in the length direction has a light guide plate support portion. Since it is arranged outside the end portion 23Aa on the gate side flexible substrate insertion groove 29 side in 23A, light incident on the connection portion of the gate side flexible substrate 28 at the end portion of the liquid crystal panel 11 is more reliably prevented. be able to.

Furthermore, as shown in FIG. 9, the light guide plate support portion 23A, which is in a positional relationship overlapping with the gate-side flexible substrate 28 in plan view, is aligned with the gate-side flexible substrate 28 along the Y-axis direction. Since the positions are overlapped in the axial direction, the protruding dimension of the gate-side flexible substrate 28 from the end of the liquid crystal panel 11 can be used when setting the width dimension. Thereby, since the width dimension and mechanical strength of the light guide plate support portion 23A can be made sufficiently high, the light guide plate 16 can be firmly sandwiched between the chassis 14 and supported. Therefore, since the light guide plate 16 can be stably positioned in the Z-axis direction with respect to the LED 17 and the liquid crystal panel 11, the incident efficiency of light incident on the light incident surface 16b of the light guide plate 16 from the LED 17 can be stabilized. In addition, the display quality of the image displayed on the liquid crystal panel 11 can be improved.

As described above, the liquid crystal display device (display device) 10 of this embodiment includes the LED (light source) 17, the liquid crystal panel (display panel) 11 that performs display using the light of the LED 17, and the end of the liquid crystal panel 11. And a gate-side flexible substrate (panel connecting member) 28 that is connected to the display unit and protrudes outward from the end, and is arranged so as to overlap the liquid crystal panel 11 on the side opposite to the display surface 11c side. In addition, the light incident surface 16b which is an end surface is disposed so as to face the LED 17 and the end portion 16EP is disposed outside the end portion of the liquid crystal panel 11, and the LED 17 and the gate side flexible substrate 28 are accommodated. On the other hand, the frame 13 and the chassis 14 are a pair of holding portions that hold the liquid crystal panel 11 and the light guide plate 16 in a form sandwiched from the display surface 11c side and the opposite side. The holding member HM and the gate side flexible substrate 28 are arranged side by side along the end of the liquid crystal panel 11 and are arranged on the display surface 11c side of the frame 13 and the chassis 14 which are a pair of holding units. A light guide plate support portion 23A capable of supporting at least the light guide plate 16 by being interposed between the frame 13 as a holding portion and the end side portion 16EP of the light guide plate 16, and a gate side flexible substrate 28, the frame 13 and the light guide plate 16 which are arranged on the outer side opposite to the liquid crystal panel 11 side and which are arranged on the display surface 11c side of the frame 13 and the chassis 14 as a pair of holding units. By being arranged so as to straddle the end side portion 16EP, at least light existing outside the light shielding portion 30 is blocked from directly entering the end portion of the liquid crystal panel 11. It includes a shielding portion 30 which is ability to.

In this way, the light emitted from the LED 17 enters the light incident surface 16b that is the end face of the light guide plate 16 and then is guided to the liquid crystal panel 11, so that an image is displayed on the liquid crystal panel 11 using the light. Is displayed. The light guide plate 16 that guides the light from the LED 17 to the liquid crystal panel 11 includes an end side portion 16EP, a frame 13 that is a pair of holding portions, and a frame 13 that is a holding portion disposed on the display surface 11c side of the chassis 14. Is supported by the light guide plate support portion 23 A that is interposed between the LED 17 and the liquid crystal panel 11, so that the positional relationship with respect to the LED 17 and the liquid crystal panel 11 is stably maintained. The display quality related to is stable and good. Moreover, since the light guide plate support portion 23A is arranged along the end portion of the liquid crystal panel 11 with respect to the gate side flexible substrate 28 arranged in a form protruding outward from the end portion of the liquid crystal panel 11, A sufficient size is secured by utilizing the protruding dimension of the gate side flexible substrate 28 from the end of the liquid crystal panel 11. Accordingly, the mechanical strength of the light guide plate support portion 23A is sufficiently obtained, and the liquid crystal display device 10 can be kept in a narrow frame while stably supporting the light guide plate 16.

By the way, the frame 13 and the chassis 14 which are a pair of holding portions included in the holding member HM display the liquid crystal panel 11 and the light guide plate 16 arranged so as to overlap each other while accommodating the LED 17 and the gate side flexible substrate 28. The panel holding member is interposed between the light guide plate 16 and the LED 17, the liquid crystal panel 11, and the gate side flexible substrate 28 as in the related art. Therefore, there is a concern that light leakage may occur at the end of the liquid crystal panel 11, particularly at the portion where the gate side flexible substrate 28 is connected. However, the light shielding portion 30 is disposed on the outer side opposite to the liquid crystal panel 11 side with respect to the gate side flexible substrate 28 and is disposed on the display surface 11c side of the frame 13 and the chassis 14 which are a pair of holding portions. Since the frame 13 serving as the holding unit and the end side portion 16EP of the light guide plate 16 are arranged to straddle, the light existing outside the light shielding unit 30 is at the end of the liquid crystal panel 11, particularly the gate-side flexible substrate 28. It is possible to suitably shield the direct incident light at the connection location. Thereby, the light leakage to the edge part of the liquid crystal panel 11 can be suppressed, and the display quality concerning the image displayed on the liquid crystal panel 11 can be made favorable. Thus, according to the present embodiment, it is possible to provide the liquid crystal display device 10 suitable for narrowing the frame while suppressing light leakage and stably supporting the light guide plate 16.

Further, the light guide plate support portion 23A and the light shielding portion 30 are integrally formed with the frame 13 as a pair of holding portions and the frame 13 as a holding portion arranged on the display surface 11c side of the chassis 14, respectively. In this way, since the light guide plate support portion 23A and the light shielding portion 30 are integrally formed on the frame 13 which is a holding portion disposed on the display surface 11c side, they are temporarily separated from the frame 13. Compared to the case, the workability related to assembly is improved and the number of parts is reduced.

The light guide plate support portion 23A protrudes toward the light guide plate 16 side from the frame 13 which is a holding portion disposed on the display surface 11c side of the frame 13 and the chassis 14 which are a pair of holding portions, and the protruding end surface thereof. The light guide plate 16 is in contact with the end portion 16EP. In this way, the protruding end surface of the light guide plate support portion 23A integrally formed with the frame 13 that is the holding portion disposed on the display surface 11c side is brought into contact with the end side portion 16EP of the light guide plate 16. A sufficient supporting force can be applied to the end side portion 16EP of the light guide plate 16.

The light shielding portion 30 protrudes toward the light guide plate 16 from the frame 13 which is a holding portion disposed on the display surface 11 c side of the frame 13 and the chassis 14 which are a pair of holding portions, and is an end portion of the liquid crystal panel 11. The first space S1 that faces the second space S2 that faces at least the end surface 16EF of the end portion 16EP of the light guide plate 16 is arranged. In this way, the first space S1 facing the end of the liquid crystal panel 11 and at least the end side of the light guide plate 16 are formed by the light-shielding unit 30 integrally formed with the frame 13 that is a holding unit disposed on the display surface 11c side. By dividing the second space S2 where the end face 16EF of the portion 16EP faces, the light existing in the second space S2 can be blocked from entering the first space S1, and thereby the end of the liquid crystal panel 11 can be blocked. It is possible to prevent light from entering the part.

Further, the protruding end surface of the light shielding portion 30 is in contact with the end portion 16EP of the light guide plate 16. In this way, the light guide plate 16 can be supported by the light shielding portion 30 together with the light guide plate support portion 23A. Thereby, the light-guide plate 16 can be supported more stably.

Further, the light guide plate support 23A is made of a light shielding material. In this way, it is possible to block the direct light incident on the end portion of the liquid crystal panel 11 by the light guide plate support portion 23 A together with the light blocking portion 30. Thereby, higher light shielding performance can be obtained.

Further, the light guide plate support portion 23A and the light shielding portion 30 are formed so as to be separated from each other. In this case, compared with the case where the light guide plate support portion and the light shielding portion are formed in a continuous form, the shapes of the light guide plate support portion 23A and the light shielding portion 30 do not become complicated, so that the manufacture is easy. The effect of becoming can be obtained.

Further, a part of the light shielding portion 30 is disposed on the outer side opposite to the liquid crystal panel 11 side with respect to the light guide plate support portion 23A. In this way, the light shielding range by the light shielding unit 30 is in a range that overlaps with the light guide plate support 23A, so that light leakage to the end of the liquid crystal panel 11 can be more suitably prevented.

Further, the light shielding portion 30 is formed in a wider range than the gate side flexible substrate 28 in the direction along the end portion of the liquid crystal panel 11. In this way, light leakage to the connection portion of the gate-side flexible substrate 28 in the end portion of the liquid crystal panel 11 by the light-shielding portion 30 that is wider than the gate-side flexible substrate 28 in the direction along the end portion of the liquid crystal panel 11. Can be prevented more suitably.

The gate side flexible substrate 28 has a driver (panel driving component) DR that drives the liquid crystal panel 11. In this way, since the gate-side flexible substrate 28 connected to the end of the liquid crystal panel 11 has the driver DR, the liquid crystal panel 11 can be driven by the driver DR to display an image. .

<Embodiment 2>
A second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, the light guide plate supporting portion 123A and the light shielding portion 130 are connected to each other. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 1 is abbreviate | omitted.

The light guide plate support part 123A and the light shielding part 130 according to the present embodiment are configured to be connected to each other as shown in FIGS. Specifically, the light guide plate support 123 A has a formation range in the X-axis direction that reaches the outside of the gate-side flexible substrate 128 (on the side opposite to the liquid crystal panel 111 side) and reaches a position where it overlaps the light-shielding unit 130. Yes. The end portion 123Aa on the gate-side flexible substrate insertion groove 129 side in the light guide plate support portion 123A is connected to the end portion 130a in the length direction of the light shielding portion 130. Thereby, both the mechanical strength of the light guide plate support part 123A and the light shielding part 130 can be enhanced, so that the light guide plate 116 can be supported more stably. The light guide plate support portion 123A has a width dimension (dimension in the X-axis direction) that is a sum of the protrusion dimension of the gate-side flexible substrate 128 from the end of the liquid crystal panel 111 and the width dimension of the light shielding section 130. Even bigger than that. The outer side surface 123Ab of the light guide plate support portion 123A is more outward than the inner side surface 130b of the light shielding portion 130, and is flush with the outer side surface 130c of the light shielding portion 130. In this way, the width dimension of the light guide plate support 123A can be maximized while keeping the liquid crystal display device 110 in a narrow frame, so that the light guide plate 116 can be supported more stably. .

As described above, according to the present embodiment, the light guide plate support portion 123A and the light shielding portion 130 are formed in a continuous manner. In this way, the mechanical strength of the light guide plate support 123A can be made higher, and the light guide plate 116 can be supported more stably. Further, if the light guide plate support portion and the light shielding portion are formed in a separated form, the gap between the light guide plate support portion 123A and the light shielding portion 130 is smaller than when a gap is generated between the light guide plate support portion and the light shielding portion. Therefore, the light shielding function for the end of the liquid crystal panel 111 can be further enhanced, and light leakage can be more reliably prevented.

In addition, the outer side surface of the light guide plate support portion 123A is arranged more outward than the inner side surface in the light shielding portion 130. In this way, the light guide plate support portion 123 A is sized using at least a part of the width dimension of the light shielding portion 130 in addition to the protrusion size of the gate side flexible substrate 128 from the end portion of the liquid crystal panel 111. Therefore, the mechanical strength is higher and the light guide plate 116 can be supported more stably.

The light guide plate support portion 123A is arranged such that the outer side surface thereof is flush with the outer side surface of the light shielding unit 130. In this way, the formation range of the light guide plate support portion 123A can be maximized, so that the mechanical strength can be further increased and the light guide plate 116 can be supported more stably. .

<Embodiment 3>
A third embodiment of the present invention will be described with reference to FIG. In the third embodiment, the length dimension of the light shielding unit 230 is changed from the first embodiment. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 1 is abbreviate | omitted.

As shown in FIG. 17, the light-shielding portion 230 according to this embodiment has an end portion 230a in the length direction that is X with respect to the end portion 223Aa on the gate-side flexible substrate insertion groove 229 side in the light guide plate support portion 223A. The length dimension is such that it does not overlap (does not overlap) in the axial direction. The end surface at the end 230a of the light shielding unit 230 is flush with the end surface at the end 223Aa of the light guide plate support 223A. That is, it can be said that the length dimension of the light shielding portion 230 is substantially equal to the length dimension (dimension in the Y-axis direction) of the gate side flexible substrate insertion groove 229. In addition, the length dimension of the light-shielding portion 230 is slightly larger than the length dimension (dimension in the Y-axis direction) of the gate side flexible substrate 228.

<Embodiment 4>
A fourth embodiment of the present invention will be described with reference to FIG. In this Embodiment 4, what changed the length dimension of the light-shielding part 330 from above-mentioned Embodiment 3 is shown. In addition, the overlapping description about the same structure, effect | action, and effect as above-mentioned Embodiment 3 is abbreviate | omitted.

As shown in FIG. 18, the light-shielding portion 330 according to the present embodiment has a length shorter than that of the gate-side flexible substrate insertion groove 329. The length dimension of the light shielding portion 330 is slightly larger than the length dimension of the gate side flexible substrate 328.

<Embodiment 5>
Embodiment 5 of the present invention will be described with reference to FIG. This Embodiment 5 shows what changed the width dimension of light-guide plate support part 423A from above-mentioned Embodiment 2. FIG. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 1 is abbreviate | omitted.

As shown in FIG. 19, the light guide plate support portion 423A according to the present embodiment has a width dimension (dimension in the X-axis direction) smaller than that described in the second embodiment, specifically, a liquid crystal panel. It is smaller than the protruding dimension of the gate side flexible substrate 428 from the end of 411. Accordingly, the outer side surface 423Aa of the light guide plate support portion 423A is disposed at a position where the outer side surface 430c of the light shielding portion 430 is retracted inward in a step shape, and the position is more than the inner side surface 430b of the light shielding portion 430. Is also inside. The light guide plate support portion 423A and the light shielding portion 430 are connected to each other by a connecting portion 31 that is arranged such that end portions 423Aa and 430a extend along the X-axis direction. The connecting portion 31 is integrally formed with the frame 413 similarly to the light guide plate support portion 423A and the light shielding portion 430.

<Embodiment 6>
A sixth embodiment of the present invention will be described with reference to FIG. In the sixth embodiment, a configuration in which the light shielding portion 530 does not have a support function for the light guide plate 516 is shown. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 1 is abbreviate | omitted.

As shown in FIG. 20, the light-shielding portion 530 according to the present embodiment is disposed on the outer side opposite to the liquid crystal panel 511 side with respect to the end portion 516EP of the light guide plate 516, and is flat with the end portion 516EP. The positional relationship is such that the view is not superimposed. Therefore, the light-shielding part 530 does not have a light guide plate support function because the protruding front end surface thereof does not come into contact with the end portion 516EP of the light guide plate 516. On the other hand, the light shielding portion 530 is formed over a range from the panel pressing portion 513a of the frame 513 to the end side portion 516EP of the light guide plate 516 in the Z-axis direction. The second space S2 facing the end surface 516EF of the end portion 516EP is partitioned so as to be optically independent. That is, the light shielding unit 530 has a light shielding function equivalent to that described in the first embodiment. With such a configuration, it is not necessary to secure an installation space for the light shielding portion 530 in the surface of the end portion 516EP of the light guide plate 516. Therefore, the width dimension of the end portion 516EP and the frame portion of the liquid crystal display device 510 are eliminated. This is useful for further narrowing the frame.

<Embodiment 7>
A seventh embodiment of the present invention will be described with reference to FIG. In the seventh embodiment, the LED unit LU is changed in arrangement. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 1 is abbreviate | omitted.

The LED unit LU according to the present embodiment is arranged at the short side end of the liquid crystal display device 610 as shown in FIG. Therefore, the LED 617 constituting the LED unit LU is arranged to face the end surface 616EF of the short side end portion 616EP of the light guide plate 616 that overlaps the gate side flexible substrate 628 in plan view. Is the light incident surface 616b. In such an arrangement, although there is a concern that the light from the LED 617 may directly enter the end portion on the short side of the liquid crystal panel 611 without passing through the light guide plate 616, the LED 617 and the liquid crystal panel 611 are used. Since the light-shielding part 630 and the light guide plate support part 623A are interposed between the end part on the short side of the liquid crystal panel 611, light traveling from the LED 617 to the end part on the short side of the liquid crystal panel 611 is transmitted. In addition, it is possible to block well regardless of the presence or absence of the gate-side flexible substrate 628, and thus light leakage to the liquid crystal panel 611 can be suitably prevented.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In addition to the above-described embodiments, the length and width dimensions of the light shielding part and the light guide plate support part can be appropriately changed. For example, it is possible to make the width dimension of the light shielding part the same as the width dimension of the light guide plate support part, or to make it larger than the width dimension of the light guide plate support part.

(2) In each of the above-described embodiments, the light shielding portion and the light guide plate support portion have a shape that extends linearly along one direction (Y-axis direction) when seen in a plan view. The planar shape of the optical plate support can be changed as appropriate. For example, at least one of the light shielding plate and the light guide plate support may have a side surface or an end surface that is curved as viewed in a plane or inclined with respect to the extending direction.

(3) In each of the above-described embodiments, the projection end surface of the light shielding portion from the frame has been configured to reach the position where it contacts the light emitting surface of the end portion of the light guide plate. The present invention also includes a configuration in which the end surface does not reach the light exit surface of the end portion of the light guide plate, and a gap is provided between the projecting end surface of the light shielding portion and the light exit surface of the end portion of the light guide plate. .

(4) In each of the above-described embodiments, the case where the light shielding part and the light guide plate support part are both integrally formed on the frame is shown. However, at least one of the light shielding part and the light guide plate support part is separated from the frame. What was assembled | attached with respect to a flame | frame or a light-guide plate as components is also contained in this invention.

(5) When the above-described (4) is applied and the light-shielding part is a separate part from the frame, for example, the light-shielding part made of a light-shielding material is formed in a film or curtain shape having a slight thickness. Is also possible. In that case, the light shielding part has only a light shielding function and does not have a light guide plate support function.

(6) In each of the above-described embodiments, the light guide plate support portion is made of a light shielding material so as to have a light shielding function. For example, the light guide plate support portion is made of a translucent resin material. Thus, the present invention also includes a device that does not have a light shielding function.

(7) In each of the embodiments described above, the printed circuit board is connected to the source-side flexible board, and a signal from the printed board is transmitted to the gate-side flexible board via the source-side flexible board and the relay wiring on the liquid crystal panel. Although the printed board is connected to the gate side flexible board, the signal from the printed board is transmitted to the source side flexible board via the gate side flexible board and the relay wiring on the liquid crystal panel. The present invention is applicable. In that case, a source-side flexible substrate insertion groove is formed in the light-guide plate support that supports the end-side portion of the light-guide plate that overlaps with the source-side flexible substrate in plan view, and is inserted there By forming the light shielding portion so as to be adjacent to the outside with respect to the source-side flexible substrate, it is possible to obtain operations and effects equivalent to those of the above-described embodiments.

(8) The arrangement of the light shielding portions in the X-axis direction described in the sixth embodiment can be changed as appropriate. That is, in the sixth embodiment, a configuration in which the inner side surface of the light shielding unit is flush with the end surface of the end portion of the light guide plate is illustrated, but the side surface is disposed outside the end surface. Of course, it is included in the present invention.

(9) In each of the above-described embodiments, the source-side flexible substrate is connected to only one end on the long side of the liquid crystal panel. However, the source-side flexible substrate is on both long sides of the liquid crystal panel. The present invention can also be applied to a structure connected to each end. Similarly, the present invention can also be applied to a structure in which the gate-side flexible substrate is connected to both ends of both short sides of the liquid crystal panel.

(10) In each of the above-described embodiments, the case where the gate-side flexible substrate, which is a panel connection member, has a flexible configuration, but a rigid panel connection member that does not have flexibility is used. Are also included in the present invention.

(11) In each of the above embodiments, the case where the gate side flexible substrate having a driver for driving liquid crystal is used as the panel connecting member connected to the end of the liquid crystal panel is shown. A device using a connecting member is also included in the present invention.

(12) In each of the embodiments described above, a pair of LED units (LED substrates) are arranged so as to face the ends on both long sides of the light guide plate. The present invention also includes a pair arranged so as to face the end portions on the short side.

(13) In addition to the above (12), a total of four LED units (LED substrates), one pair each facing the respective ends of both long sides and both short sides of the light guide plate, On the contrary, the present invention includes one LED unit arranged so as to face only one end of one long side or one short side of the light guide plate. Further, the present invention also includes a configuration in which three LED units are arranged so as to face each end of any three sides of the light guide plate.

(14) In each of the above-described embodiments, two LED units (LED substrates) are arranged with respect to one side of the light guide plate. Three or more may be arranged.

(15) In each of the above-described embodiments, the power supply board is provided with the function of supplying power to the LEDs. However, the LED drive board that supplies power to the LEDs is made independent of the power supply board. Are also included in the present invention.

(16) In each of the above-described embodiments, the main board is provided with the tuner section. However, the present invention includes a tuner board having the tuner section that is independent of the main board.

(17) In each of the above-described embodiments, the color filters of the color filter included in the liquid crystal panel are exemplified by three colors of R, G, and B. However, the color sections can be four or more colors.

(18) In each of the embodiments described above, an LED is used as a light source, but other light sources such as an organic EL can be used.

(19) In each of the embodiments described above, a TFT is used as a switching element of a liquid crystal display device. However, the present invention can also be applied to a liquid crystal display device using a switching element other than TFT (for example, a thin film diode (TFD)). In addition to the liquid crystal display device for display, the present invention can also be applied to a liquid crystal display device for monochrome display.

(20) In each of the above-described embodiments, the liquid crystal display device using the liquid crystal panel as the display panel has been exemplified. However, the present invention can also be applied to display devices using other types of display panels.

(21) In each of the above-described embodiments, the television receiver provided with the tuner unit has been exemplified. However, the present invention can be applied to a display device that does not include the tuner unit.

10, 110, 510, 610 ... Liquid crystal display device (display device), 11, 111, 411, 511, 611 ... Liquid crystal panel (display panel), 11c ... Display surface, 13, 413 ... Frame (holding unit), 14 ... Chassis (holding portion) 16, 116, 516, 616 ... light guide plate, 16b, 616b ... light incident surface (end face), 16EP, 516EP, 616EP ... end side portion, 16EF, 516EF, 616EF ... end face, 17, 617 ... LED (light source), 23A, 123A, 223A, 423A, 623A ... light guide plate support, 28, 128, 228, 328, 428, 628 ... gate side flexible substrate (panel connection member), 30, 130, 230, 330, 430, 530, 630 ... light-shielding part, 123Ab ... side, 130b ... side (inner side), 130c ... side (outside) Aspect), DR ... driver (panel driving part), HM ... holding member, S1 ... first space, S2 ... second space, TV ... television receiver apparatus

Claims

A light source;
A display panel that performs display using light of the light source;
A panel connecting member that is connected to an end of the display panel and is arranged to protrude outward from the end;
The display panel is disposed so as to overlap with the side opposite to the display surface side, the end surface is disposed to face the light source, and the end portion is disposed outside the end portion of the display panel. A light guide plate,
A holding member having a pair of holding portions for holding the light source and the panel connecting member, and holding the display panel and the light guide plate in a form sandwiched from the display surface side and the opposite side;
The holding portion arranged along the end portion of the display panel with respect to the panel connecting member and arranged on the display surface side of the pair of holding portions and the end portion of the light guide plate A light guide plate support part capable of supporting at least the light guide plate,
The panel connecting member is arranged on the outer side opposite to the display panel side, and the holding unit arranged on the display surface side of the pair of holding units and the end portion of the light guide plate. A display device comprising: a light-shielding portion that is arranged in a straddling manner so that at least light existing outside the light-shielding portion can be shielded from directly entering the end portion of the display panel.
The display device according to claim 1, wherein the light guide plate support part and the light shielding part are integrally formed with the holding part disposed on the display surface side of the pair of holding parts.
The light guide plate support portion protrudes from the holding portion arranged on the display surface side of the pair of the holding portions toward the light guide plate side, and a protruding end surface thereof abuts on the end side portion of the light guide plate. The display device according to claim 2.
The light-shielding portion protrudes from the holding portion arranged on the display surface side of the pair of holding portions toward the light guide plate side, and at least the guide space facing the end portion of the display panel. The display device according to claim 2 or 3, wherein the display device is arranged so as to partition a second space facing an end surface of the end portion of the light plate.
The display device according to claim 4, wherein the light-shielding portion has a protruding end surface in contact with the end-side portion of the light guide plate.
The display device according to any one of claims 1 to 5, wherein the light guide plate support portion is made of a light shielding material.
The display device according to any one of claims 1 to 6, wherein the light guide plate support portion and the light shielding portion are formed so as to be separated from each other.
The display device according to claim 7, wherein a part of the light shielding part is disposed on the outer side opposite to the display panel side with respect to the light guide plate support part.
The display device according to claim 7 or 8, wherein the light shielding portion has a wider range of formation along the end portion of the display panel than the panel connection member.
The display device according to any one of claims 1 to 6, wherein the light guide plate support portion and the light shielding portion are formed so as to be continuous with each other.
The display device according to claim 10, wherein an outer side surface of the light guide plate support portion is arranged more outward than an inner side surface of the light shielding portion.
The display device according to claim 11, wherein the light guide plate support portion is arranged such that an outer side surface thereof is flush with an outer side surface of the light shielding portion.
The display device according to any one of claims 1 to 12, wherein the panel connection member includes a panel driving component that drives the display panel.
The display device according to any one of claims 1 to 13, wherein the display panel is a liquid crystal panel in which liquid crystal is sealed between a pair of substrates.
A television receiver comprising the display device according to any one of claims 1 to 14.