WO2013069590A1

WO2013069590A1 - Display device and television receiver

Info

Publication number: WO2013069590A1
Application number: PCT/JP2012/078578
Authority: WO
Inventors: 辻文浩
Original assignee: シャープ株式会社
Priority date: 2011-11-10
Filing date: 2012-11-05
Publication date: 2013-05-16

Abstract

A liquid crystal display device (1) is provided with: a liquid crystal panel (display unit) (2); a backlight unit (backlight device) (3); and a housing (9) that accommodates the backlight unit (3). In the housing (9) are provided a bottom surface (9a) and four side surfaces (9b), which are provided standing at each of the four sides of the bottom surface (9a). A frame (4) having a side surface part (4c) facing a side surface (9b) at the outside of the side surface (9b) of the housing (9) is provided. A flexible circuit board (22) on which a gate driver (16a) is mounted is disposed between the side surface (9b) of the housing (9) and the side surface part (4c) of the frame (4).

Description

Display device and television receiver

The present invention relates to a display device, in particular, a non-light emitting display device provided with a backlight device, and a television receiver using the same.

In recent years, for example, in a television receiver for home use, as represented by a liquid crystal display device, a display device provided with a liquid crystal panel as a flat display portion having many features such as a thinner and lighter than a conventional cathode ray tube. Is becoming mainstream. Such a liquid crystal display device includes a backlight device (backlight) that emits light and a liquid crystal that displays a desired image by acting as a shutter for light from a light source provided in the backlight device. And a panel. In the television receiver, information such as characters and images included in the video signal of the television broadcast is displayed on the display surface of the liquid crystal panel.

In addition, the backlight device is roughly divided into a direct type and an edge light type depending on the arrangement of the light source with respect to the liquid crystal panel as an object to be irradiated with light, but the liquid crystal display device has recently been made thinner than the direct type. An edge light type that is easy to achieve is generally used. That is, in the edge-light type backlight device, the light source is thinned by disposing the light source on the side of the liquid crystal panel, and the light guide plate having the light emitting surface disposed to face the non-display surface of the liquid crystal panel Is used to provide light from the light source to the liquid crystal panel.

In addition, as described in Patent Document 1 below, for example, a conventional liquid crystal display device is mounted with a mounting substrate on which a light emitting diode as a light source is mounted, a side surface to which the mounting substrate is attached, and the light guide plate. It has been proposed to have a frame having a bottom surface, and to provide a groove portion in the frame, and to install an end portion of the mounting substrate and a support portion for supporting the light guide plate in the groove portion. In this conventional liquid crystal display device, the alignment between the light emitting diode and the light guide plate can be performed with high accuracy.

International Publication No. 2011/010492 Pamphlet

However, the conventional liquid crystal display device (display device) as described above sometimes has a problem that it is difficult to narrow the frame easily.

Here, with reference to FIG. 10, a problem in the conventional liquid crystal display device will be specifically described.

FIG. 10 is an enlarged view showing a main configuration of a conventional liquid crystal display device.

In FIG. 10, the conventional liquid crystal display device 51 is provided with a liquid crystal panel 52 as a display unit and a backlight device 53 as a backlight unit. The liquid crystal panel 52 is provided with a counter substrate (color filter substrate) 52a and an active matrix substrate 52b sandwiching a liquid crystal layer (not shown). The backlight device 53 includes a light guide plate 54 into which light from a light emitting diode (not shown) is incident, a reflection sheet 55 and an optical sheet 56 provided on the non-light emitting surface side and the light emitting surface side of the light guide plate 54, respectively. It has.

The conventional liquid crystal display device 51 includes a plastic chassis (P chassis) 58 that supports the liquid crystal panel 52, and a frame 59 on which the light guide plate 54 to which the reflection sheet 55 is attached is mounted on the plastic chassis 58. And a bezel 57 that is assembled to the liquid crystal panel 52 via a plastic chassis 58 and rubber 62. In this conventional liquid crystal display device 51, an outer container is constituted by the bezel 57, the plastic chassis 58, and the frame 59, and the liquid crystal panel 52 and the backlight device 53 are integrally assembled in the outer container.

In the conventional liquid crystal display device 51, as illustrated in FIG. 10, a gate driver 61 as a driver for driving the liquid crystal panel 52 in units of pixels is disposed between the active matrix substrate 52b and the plastic chassis 58. Yes. More specifically, the gate driver 61 is mounted on the flexible circuit board 60 connected to the gate wiring (not shown) provided on the active matrix substrate 52b, and the active matrix substrate 52b, the plastic chassis 58, and the like. It is arranged between.

As described above, in this conventional liquid crystal display device 51, the plastic chassis 58 is provided, and the flexible circuit board 60 on which the gate driver 61 is mounted is disposed between the active matrix substrate 52b and the plastic chassis 58. As a result, this conventional liquid crystal display device 51 sometimes has a problem that it is difficult to reduce the frame width, which is indicated by “W0” in FIG.

Further, in this conventional liquid crystal display device 51, depending on the manufacturing accuracy of the plastic chassis 58 and the frame 59, the assembling accuracy thereof, etc., as indicated by “L” in FIG. , The light from the backlight device 53 may leak to the outside, which may cause a new problem.

In view of the above problems, an object of the present invention is to provide a display device capable of easily narrowing the frame and a television receiver using the display device.

In order to achieve the above object, a display device according to the present invention accommodates a display unit having a plurality of pixels, a backlight unit that emits illumination light to the display unit, and the backlight unit. A display device comprising a housing,
A driver for driving the plurality of pixels;
A flexible circuit board on which the driver is mounted;
A frame assembled to the housing so as to hold the display unit;
The housing is provided with a bottom surface and four side surfaces respectively erected on four sides of the bottom surface,
The frame is provided with a side portion facing the side surface outside the side surface of the housing,
The flexible circuit board is disposed between at least one side surface of the casing and the side surface portion of the frame facing the side surface.

In the display device configured as described above, a housing that accommodates the backlight unit is provided with a bottom surface and four side surfaces that are erected on four sides of the bottom surface. Further, the frame is provided with a side surface portion facing the side surface outside the side surface of the housing. The flexible circuit board is disposed between at least one side surface of the housing and a side surface portion of the frame facing the side surface. Thus, unlike the conventional example, it is possible to easily configure a display device capable of easily narrowing the frame. Further, since the casing is configured in a bottomed shape having an opening, unlike the conventional example, it is possible to reliably prevent light leakage from leaking light from the backlight portion to the outside.

In the display device, a cushion material may be installed at a tip of the at least one side surface of the housing.

In this case, the flexible circuit board can be prevented from being damaged by the tip of the side surface.

In the display device, the tip of the at least one side surface of the housing may be subjected to R processing.

Further, in the display device, a contact portion that contacts the display portion may be provided on the side surface of the housing.

In this case, the display unit can be stably supported.

In the display device, a liquid crystal panel is used as the display unit,
As the driver, at least one of a gate driver and a source driver may be used.

In this case, a liquid crystal display device capable of easily narrowing the frame can be easily configured.

Also, the television receiver of the present invention is characterized by using the above display device.

Since the television receiver configured as described above uses a display device that can easily achieve a narrow frame, a compact television receiver can be easily configured.

According to the present invention, it is possible to provide a display device capable of easily narrowing the frame and a television receiver using the display device.

FIG. 1 is an exploded perspective view for explaining a television receiver and a liquid crystal display device according to a first embodiment of the present invention. FIG. 2 is a diagram for explaining a main configuration of the liquid crystal display device. FIG. 3 is a diagram for explaining the configuration of the liquid crystal panel shown in FIG. FIG. 4 is a diagram for explaining a source driver and a gate driver provided in the liquid crystal panel. FIG. 5 is a plan view showing the backlight device shown in FIG. FIG. 6 is an enlarged view showing a main configuration of the liquid crystal display device. FIG. 7 is an enlarged view showing a main configuration of the liquid crystal display device according to the second embodiment. FIG. 8 is an enlarged view showing a main configuration of the liquid crystal display device according to the third embodiment. FIG. 9 is an enlarged view showing a main configuration of the liquid crystal display device according to the fourth embodiment. FIG. 10 is an enlarged view showing a main configuration of a conventional liquid crystal display device.

Hereinafter, preferred embodiments of the display device and the television receiver of the present invention will be described with reference to the drawings. In the following description, the case where the present invention is applied to a transmissive liquid crystal display device will be described as an example. Moreover, the dimension of the structural member in each figure does not faithfully represent the actual dimension of the structural member, the dimensional ratio of each structural member, or the like.

[First Embodiment]
FIG. 1 is an exploded perspective view for explaining a television receiver and a liquid crystal display device according to a first embodiment of the present invention. In the figure, the television receiver Tv of the present embodiment includes a liquid crystal display device 1 as a display device, and is configured to be able to receive a television broadcast by an antenna, a cable (not shown) or the like. The liquid crystal display device 1 is erected by a stand D while being housed in the front cabinet Ca and the back cabinet Cb. In the television receiver Tv, the display surface 1a of the liquid crystal display device 1 is configured to be visible through the front cabinet Ca. The display surface 1a is installed by the stand D so as to be parallel to the direction of action of gravity (vertical direction).

Further, in the television receiver Tv, an image corresponding to a television broadcast video signal received by a TV tuner unit (not shown) is displayed on the display surface 1a, and audio is output from a speaker Ca1 provided in the front cabinet Ca. Is played out. The back cabinet Cb is formed with a large number of ventilation holes so that heat generated by the backlight device, the power source, etc. can be appropriately dissipated.

Subsequently, the liquid crystal display device 1 of the present embodiment will be specifically described with reference to FIG.

FIG. 2 is a diagram for explaining a main configuration of the liquid crystal display device.

2, the liquid crystal display device 1 according to the present embodiment includes a liquid crystal panel 2 as a display unit in which the upper side in FIG. 2 is installed as a viewing side (display surface side), and a non-display surface side of the liquid crystal panel 2 (FIG. And a backlight device 3 as a backlight unit that irradiates the liquid crystal panel 2 with illumination light. Further, in the liquid crystal display device 1, the liquid crystal panel 2 and the backlight device 3 are assembled with each other inside the frame 4 having an L-shaped cross section, and illumination light from the backlight device 3 enters the liquid crystal panel 2. The transmissive liquid crystal display device 1 is integrated.

In the liquid crystal display device 1, the display surface 1 a is defined by a rectangular opening 4 a provided in the frame 4. That is, in the liquid crystal display device 1, the display surface of the liquid crystal panel 2 visually recognized through the opening 4a constitutes the display surface 1a.

The liquid crystal panel 2 includes a liquid crystal layer, a color filter substrate 2a and an active matrix substrate 2b as a pair of substrates sandwiching the liquid crystal layer, and outer surfaces of the color filter substrate 2a and the active matrix substrate 2b. A polarizing plate (not shown) is provided. In the liquid crystal panel 2, the polarization state of the illumination light incident via the polarizing plate on the backlight device 3 side is modulated by the liquid crystal layer, and the polarizing plate on the opening 4 a side (display surface 1 a side) is used. A desired image is displayed by controlling the amount of light passing therethrough.

Next, the liquid crystal panel 2 of the present embodiment will be specifically described with reference to FIG.

FIG. 3 is a diagram for explaining the configuration of the liquid crystal panel shown in FIG.

3, the liquid crystal display device 1 (FIG. 2) includes a panel control unit 12 that performs drive control of the liquid crystal panel 2 (FIG. 2) serving as the display unit that displays information such as characters and images, and the panel control. A source driver 15 that operates based on an instruction signal from the section 12 and first and

second gate drivers

16a and 16b are provided. These first and

second gate drivers

16a and 16b are provided on the left end side and the right end side of the liquid crystal panel 2, respectively, and are respectively connected to the left end and right end of a gate wiring described later. .

The panel control unit 12 is provided in a control device (not shown) provided in the liquid crystal display device 1, and receives a video signal from the outside of the liquid crystal display device 1. The panel control unit 12 performs predetermined image processing on the input video signal to generate each instruction signal to the source driver 15 and the first and

second gate drivers

16a and 16b. And a frame buffer 14 capable of storing display data for one frame included in the input video signal. The panel control unit 12 performs drive control of the source driver 15 and the first and

second gate drivers

16a and 16b according to the input video signal, so that information according to the video signal is displayed on the liquid crystal panel. 2 is displayed.

The source driver 15 and the first and

second gate drivers

16a and 16b are drive circuits that drive a plurality of pixels P provided in the liquid crystal panel 2 in units of pixels, and the source driver 15 and the first and second gates. The

drivers

16a and 16b include a plurality of source lines S1 to SM (M is an integer of 2 or more, hereinafter collectively referred to as “S”) and a plurality of gate lines G1 to GN (N is an integer of 2 or more). , Hereinafter collectively referred to as “G”). The source wiring S and the gate wiring G constitute a data wiring and a scanning wiring, respectively, and are made of a transparent glass material or a transparent synthetic resin base material (see FIG. 2) included in the active matrix substrate 2b (FIG. 2). (Not shown) are arranged in a matrix so as to cross each other. That is, the source wiring S is provided on the substrate so as to be parallel to the matrix-like column direction (vertical direction of the liquid crystal panel 2), and the gate wiring G is arranged in the matrix-like row direction (horizontal of the liquid crystal panel 2). Is provided on the substrate so as to be parallel to (direction).

Also, a plurality of source drivers 15 and first and

second gate drivers

16 a and 16 b are provided, and are sequentially arranged along the horizontal and vertical directions of the liquid crystal panel 2.

Here, with reference to FIG. 4, the plurality of source drivers 15 and the plurality of first and

second gate drivers

16a and 16b in the liquid crystal panel 2 of the present embodiment will be specifically described.

FIG. 4 is a diagram for explaining a source driver and a gate driver provided in the liquid crystal panel.

Also, as shown in FIG. 4, a plurality of, for example, eight source drivers 15-1 to 15-8 (hereinafter collectively referred to as “15”) are mounted on eight flexible circuit boards (SOF) 20, respectively. ing. One end of each flexible circuit board 20 is connected to the source wiring S on the active matrix substrate 2b outside the effective display area A. The same number of source lines S, that is, (M / 8) source lines S are connected to each of the source drivers 15-1 to 15-8.

Further, the other end side of each flexible circuit board 20 is connected to one of the two printed circuit boards 21. In the liquid crystal panel 2, an instruction signal corresponding to information displayed on the display unit of the liquid crystal panel 2 is input from the panel control unit 12 to each of the source drivers 15-1 to 15-8. Yes. Thereafter, each of the source drivers 15-1 to 15-8 outputs a data signal to be described later to the corresponding source line S.

In the liquid crystal panel 2, a plurality of, for example, four gate drivers 16a-1 to 16a-4 (hereinafter collectively referred to as “16a”) and four on the left end side and the right end side of the liquid crystal panel 2 are provided. Gate drivers 16b-1 to 16b-4 (hereinafter collectively referred to as “16b”) are provided. These gate drivers 16a-1 to 16a-4 and gate drivers 16b-1 to 16b-4 are mounted on a flexible circuit board (SOF) 22, respectively. One end of each flexible circuit board 22 is connected to the gate wiring G on the active matrix substrate 2b outside the effective display area A. Further, the left end and the right end of each gate line G are connected to the

gate drivers

16a and 16b on the left end side and the right end side, respectively, and each gate driver 16a-1 to 16a-4 and each gate driver 16b-1 are connected. The same number of gate wirings G, that is, (N / 4) gate wirings G are connected to ˜16b-4.

Further, each of the gate drivers 16a-1 to 16a-4 and each of the gate drivers 16b-1 to 16b-4 is connected via a corresponding flexible circuit board 22 and wiring (not shown) provided on the active matrix substrate 2b. Is connected to the panel control unit 12. Then, each of the gate drivers 16a-1 to 16a-4 and each of the gate drivers 16b-1 to 16b-4 receives an instruction signal from the panel control unit 12 and applies a scanning signal to be described later to the corresponding gate wiring G. Is output.

Returning to FIG. 3, in the vicinity of the intersection of the source line S and the gate line G, the pixel P having the thin film transistor 17 as a switching element and the pixel electrode 18 connected to the thin film transistor 17 is provided. Yes. In each pixel P, the common electrode 19 is configured to face the pixel electrode 18 with the liquid crystal layer provided on the liquid crystal panel 2 interposed therebetween. That is, in the active matrix substrate 2b, the thin film transistor 17, the pixel electrode 18, and the common electrode 19 are provided for each pixel.

Further, in the active matrix substrate 2b, a plurality of regions of each pixel P are formed in each region partitioned in a matrix by the source wiring S and the gate wiring G. The plurality of pixels P include red (R), green (G), and blue (B) pixels. These RGB pixels are sequentially arranged in this order, for example, in parallel with the gate wirings G1 to GN. Further, these RGB pixels can display corresponding colors by a color filter layer (not shown) provided on the color filter substrate 2a side.

In the active matrix substrate 2b, the first and

second gate drivers

16a and 16b are connected to the gate electrodes G1 to GN of the corresponding thin film transistor 17 based on the instruction signal from the image processing unit 13. A scanning signal (gate signal) for sequentially turning on is sequentially output. The source driver 15 also supplies a data signal (voltage signal (gradation voltage)) corresponding to the luminance (gradation) of the display image to the corresponding source wirings S1 to SM based on the instruction signal from the image processing unit 13. Output.

Subsequently, the backlight device 3 of the present embodiment will be specifically described with reference to FIGS. 2 and 5.

FIG. 5 is a plan view showing the backlight device shown in FIG.

As shown in FIGS. 2 and 5, the backlight device 3 of the present embodiment includes a light emitting diode 5 as a light source, an LED substrate 6 as a light source substrate on which the light emitting diode 5 is mounted, and a light emitting diode 5. A light guide plate 7 into which light enters is provided. As the light emitting diode 5, for example, a white (W) light emitting diode that emits white light is used. Further, in the backlight device 3 of the present embodiment, as illustrated in FIG. 5, two LED substrates 6 are used, and each LED substrate 6 has a plurality of, for example, eight, which are linearly arranged. The light emitting diodes 5 are mounted at a predetermined interval.

The light guide plate 7 is made of, for example, a synthetic resin such as a transparent acrylic resin or a transparent glass material having a thickness of about 1.5 mm to 4.0 mm, and light from the light emitting diode (light source) 5 enters the light guide plate 7. Is done. That is, in the light guide plate 7, the two side surfaces facing each other function as light incident surfaces on which light from the light emitting diodes 5 is incident. Further, for example, a reflection sheet 8 is installed on the side of the light guide plate 7 opposite to the liquid crystal panel 2 (opposite surface side). The light guide plate 7 guides the light from the light emitting diode 5 in a predetermined propagation direction (left and right direction in FIG. 2), and from the light emitting surface facing the liquid crystal panel 2, a liquid crystal panel (irradiated object). The light is emitted to the object 2. Further, an optical sheet 11 such as a lens sheet or a diffusion sheet is provided on the liquid crystal panel 2 side (light emitting surface side) of the light guide plate 7, and the light emitting diode 5 led inside the light guide plate 7 in the propagation direction. The light from the light is converted into the planar illumination light having a uniform luminance and applied to the liquid crystal panel 2.

In addition, as shown in FIG. 2, the backlight device 3 of the present embodiment is provided with a bottomed housing 9 that is open on the liquid crystal panel 2 side, and the backlight device 3 is accommodated by the housing 9. It has come to be.

The casing 9 is made of a metal material such as galvanized steel plate or aluminum. The casing 9 has a flat bottom surface 9a and four side surfaces respectively erected on the four sides of the bottom surface 9a. Is provided.

Next, the configuration of the main part of the liquid crystal display device 1 of the present embodiment will be specifically described with reference to FIGS. In the following description, the configuration in the vicinity of the first gate driver 16a and the flexible circuit board 22 on which the first gate driver 16a is mounted will be mainly exemplified and described.

FIG. 6 is an enlarged view showing a main configuration of the liquid crystal display device.

2 and 6, a metal material such as a galvanized steel plate or aluminum is used for the frame 4, and the frame 4 is attached to the housing 9 so as to hold the liquid crystal panel (display unit) 2. It is assembled. The frame 4 is provided with a frame body 4b provided so as to surround the opening 4a and four sides of the frame body 4b, and is opposed to the side surface 9b outside the side surface 9b of the housing 9. A side surface portion 4c is provided. In the frame 4, a buffer material 10 made of a synthetic resin such as rubber is provided between the frame body 4 b and the liquid crystal panel 2.

In the liquid crystal display device 1 of the present embodiment, as illustrated in FIG. 6, the flexible circuit board 22 on which the first gate driver 16 a is mounted has the side surface 9 b of the housing 9 and the frame 4 facing the side surface 9 b. It arrange | positions between the side parts 4c. In this flexible circuit board 22, the flexible circuit board 22 is bent in a state where an undesirable load does not act on the wiring (not shown) and the mounted first gate driver 16 a as much as possible. It arrange | positions between 9b and the side part 4c.

Further, in the liquid crystal display device 1 of the present embodiment, the flexible circuit board 22 on which the second gate driver 16b is mounted similarly includes the side surface 9b of the housing 9 and the side surface portion 4c of the frame 4 facing the side surface 9b. Arranged between. The flexible circuit board 20 and the printed circuit board 21 on which the source driver 15 is mounted are also disposed between the side surface 9b of the housing 9 and the side surface portion 4c of the frame 4 facing the side surface 9b.

In addition to this description, the flexible circuit board 20 on which the source driver 15 is mounted is disposed between the side surface 9b of the housing 9 and the side surface portion 4c of the frame 4 facing the side surface 9b, and the printed circuit board 21 is disposed. Alternatively, a configuration may be employed in which the housing 9 is arranged outside the bottom surface 9a so as to be parallel to the bottom surface 9a. Further, the flexible circuit board 20 on which the source driver 15 is mounted and the printed circuit board 21 may be arranged outside the bottom surface 9a of the housing 9 so as to be parallel to the bottom surface 9a.

In the liquid crystal display device 1 of the present embodiment configured as described above, in the housing 9 that accommodates the backlight device (backlight unit) 3, there are four bottom surfaces 9 a and four sides of the bottom surface 9 a erected. A side surface 9b is provided. Further, the frame 4 is provided with a side surface portion 4 c that faces the side surface 9 b outside the side surface 9 b of the housing 9. The

flexible circuit boards

20 and 22 are disposed between the side surface 9b of the housing 9 and the side surface portion 4c of the frame 4 facing the side surface 9b. Accordingly, in the present embodiment, unlike the conventional example, the liquid crystal display device 1 that does not have a plastic chassis and can be easily narrowed can be configured easily.

Specifically, in the liquid crystal display device 1 of the present embodiment, the frame width indicated by “W” in FIG. 6 is larger than the frame width in the conventional example indicated by “W0” in FIG. The size could be reduced by about 50 to 65%.

Further, in the present embodiment, the housing 9 is configured to have a bottomed shape having an opening, and therefore, unlike the conventional example, the light from the backlight device 3 leaks to the outside. It can be surely prevented.

Further, in the present embodiment, since the buffer material 10 is provided between the liquid crystal panel 2 and the frame 4, the liquid crystal panel 2 can be supported more stably.

In the present embodiment, the liquid crystal panel 2 is used as the display unit, and the first and

second gate drivers

16a and 16b and the source driver 15 are used as the drivers. The liquid crystal display device 1 that can be configured can be easily configured.

Further, in the present embodiment, since the liquid crystal display device (display device) 1 that can easily reduce the frame is used, a compact television receiver Tv can be easily configured.

[Second Embodiment]
FIG. 7 is an enlarged view showing a main configuration of the liquid crystal display device according to the second embodiment. In the figure, the main difference between the present embodiment and the first embodiment is that a cushion material is provided at the tip of at least one side surface of the housing. In addition, about the element which is common in the said 1st Embodiment, the same code | symbol is attached | subjected and the duplicate description is abbreviate | omitted.

That is, as illustrated in FIG. 7, in this embodiment, the cushion material 23 is provided at the tip of the side surface 9 b of the housing 9. The cushion material 23 is made of an elastic material, for example, a synthetic resin such as rubber, so that the flexible circuit board 22 is prevented from coming into contact with the tip of the side surface 9b.

With the above configuration, the present embodiment can achieve the same operations and effects as the first embodiment. Moreover, in this embodiment, since the cushion material 23 is installed in the front-end | tip part of at least 1 side surface 9b in the housing | casing 9, it prevents that the

flexible circuit boards

20 and 22 are damaged by the front-end | tip part of the side surface 9b. be able to.

[Third Embodiment]
FIG. 8 is an enlarged view showing a main configuration of the liquid crystal display device according to the third embodiment. In the figure, the main difference between this embodiment and the first embodiment is that R processing is applied to the tip portion of at least one side surface of the housing. In addition, about the element which is common in the said 1st Embodiment, the same code | symbol is attached | subjected and the duplicate description is abbreviate | omitted.

That is, as shown in FIG. 8, in this embodiment, the tip portion 9 b 1 of the side surface 9 b of the housing 9 is subjected to R processing.

With the above configuration, the present embodiment can achieve the same operations and effects as the first embodiment. Moreover, in this embodiment, in the housing | casing 9, since the front-end | tip part 9b1 of at least 1 side surface 9b is R-processed, it prevents that the

flexible circuit boards

20 and 22 are damaged by the front-end | tip part of the side surface 9b. Can do.

[Fourth Embodiment]
FIG. 9 is an enlarged view showing a main configuration of the liquid crystal display device according to the fourth embodiment. In the figure, the main difference between this embodiment and the first embodiment is that a contact portion that contacts the liquid crystal panel (display portion) is provided on the side surface of the housing. In addition, about the element which is common in the said 1st Embodiment, the same code | symbol is attached | subjected and the duplicate description is abbreviate | omitted.

That is, as shown in FIG. 9, in this embodiment, the contact portion 9 c is provided on the side surface 9 b of the housing 9. The contact portion 9 c is configured to contact the liquid crystal panel (display unit) 2.

With the above configuration, the present embodiment can achieve the same operations and effects as the first embodiment. In the present embodiment, in the housing 9, the side surface 9 b is provided with the contact portion 9 c that contacts the liquid crystal panel (display unit), so that the liquid crystal panel 2 can be stably supported.

It should be noted that all of the above embodiments are illustrative and not restrictive. The technical scope of the present invention is defined by the claims, and all modifications within the scope equivalent to the configurations described therein are also included in the technical scope of the present invention.

For example, in the above description, the case where the present invention is applied to a transmissive liquid crystal display device has been described. However, the backlight device of the present invention is not limited to this, and a transflective liquid crystal display device, or The present invention can be applied to various display devices such as a projection display device using a liquid crystal panel as a light valve.

In the above description, the case of using the edge light type backlight device (backlight unit) provided with the light guide plate has been described, but the backlight unit of the present invention is not limited to this, for example, A direct-type backlight unit that does not include a light guide plate may be used.

In the above description, a case where a white light emitting diode is used as the light source has been described. However, the light source of the present invention is not limited to this, and a discharge tube such as a cold cathode fluorescent tube or a hot cathode fluorescent tube is used. A light source such as a lamp such as a light bulb or a light emitting element such as an organic EL (Electronic Luminescence) or an inorganic EL element can also be used as a light source.

In addition to the above description, the first to fourth embodiments may be appropriately combined.

The present invention is useful for a display device capable of easily narrowing the frame and a television receiver using the display device.

1 Liquid crystal display device (display device)
2 Liquid crystal panel (display unit)
3 Backlight device (backlight part)
4 Frame 4c Side surface portion 9 Housing 9a Bottom surface 9b Side surface 9b1 Tip portion 9c Abutting portion 10 Buffer material 15, 15-1 to 15-8

Source driver

16a, 16b, 16a-1 to 16a-4, 16b-1 to 16b -4

Gate driver

20, 22 Flexible circuit board 23 Cushion material Tv TV receiver P Pixel

Claims

A display device comprising a display unit having a plurality of pixels, a backlight unit that irradiates illumination light to the display unit, and a housing that houses the backlight unit,
A driver for driving the plurality of pixels;
A flexible circuit board on which the driver is mounted;
A frame assembled to the housing so as to hold the display unit;
The housing is provided with a bottom surface and four side surfaces respectively erected on four sides of the bottom surface,
The frame is provided with a side portion facing the side surface outside the side surface of the housing,
The flexible circuit board is disposed between at least one side surface of the housing and the side surface portion of the frame facing the side surface;
A display device characterized by that.
The display device according to claim 1, wherein a cushion material is installed at a tip of the at least one side surface of the housing.
The display device according to claim 1, wherein a tip end portion of the at least one side surface of the housing is subjected to R processing.
The display device according to any one of claims 1 to 3, wherein a contact portion that contacts the display portion is provided on the side surface of the housing.
A liquid crystal panel is used as the display unit,
The display device according to any one of claims 1 to 4, wherein at least one of a gate driver and a source driver is used as the driver.
A television receiver comprising the display device according to any one of claims 1 to 5.