KR20120116290A - Liquid crystal display device - Google Patents

Abstract

PURPOSE: A liquid crystal display device is provided to increase rigidity of a mold frame which covers an upper portion of a light incident surface of a light guide plate. CONSTITUTION: A liquid crystal panel(110) is arranged on a mold frame. The mold frame comprises a horizontal extension portion. A bottom cover(150) receives the mold frame. A top cover(140) surrounds an upper edge of the liquid crystal panel. The top cover is combined with the mold frame and the bottom cover.

Description

[0001] LIQUID CRYSTAL DISPLAY DEVICE [0002]

The present invention relates to a liquid crystal display device using an LED, and more particularly to a liquid crystal display device having a backlight unit.

In general, a liquid crystal display (LCD) is a device for displaying a desired image by adjusting the light transmittance of liquid crystal cells arranged in a matrix form according to image signal information. Form an image on the panel.

The liquid crystal display device using this principle has a tendency that its application range is gradually widening due to the characteristics of light weight, thinness, low power consumption, and the like. In accordance with this trend, liquid crystal displays have been used in office automation equipment, audio / video equipment, and the like. In such a liquid crystal display, the amount of light transmitted is adjusted according to a signal applied to a plurality of control switches arranged in a matrix to display a desired image on a screen.

Recently, liquid crystal displays have been widely applied to not only computer monitors and televisions but also display devices of vehicle navigator systems and portable display devices such as laptops and mobile phones.

Most of the liquid crystal display devices as described above are non-emissive type display devices that display an image by controlling the amount of light source coming from the outside, so that the backlight including a separate light source for irradiating light to the liquid crystal display panel. Requires unit

In this case, the backlight unit includes an LED which is a light source, a light guide plate coupled to the light exit surface of the LED, and a plurality of optical sheets provided on the light guide plate.

A liquid crystal display having a conventional backlight unit having such a configuration will be described with reference to FIGS. 1 and 2 as follows.

1 is a cross-sectional view of a liquid crystal display having a backlight unit according to the related art.

2 is a plan view of a liquid crystal display device having a backlight unit of a liquid crystal display device according to the related art, and is a schematic view showing an arrangement state of a mold frame and a light guide plate.

3 is a schematic view showing a state in which an edge portion of a TFT array substrate of a liquid crystal panel is broken in a liquid crystal display device having a backlight unit according to the prior art.

As shown in FIGS. 1 and 2, a liquid crystal display device having a backlight unit according to the related art includes a liquid crystal panel 10, a backlight unit 1 for supplying light to the liquid crystal panel 10, and A mold frame 30 surrounding and supporting the liquid crystal panel 10 and the backlight unit 20, a bottom cover 50 that is coupled to the mold frame 30 and accommodates the backlight unit 20; It is configured to include a top cover 40 to cover the side portion with the front edge of the liquid crystal panel 10.

The liquid crystal panel 10 includes a TFT array substrate 11, a color filter array substrate 13, and a liquid crystal layer (not shown) interposed therebetween, and the TFT array substrate 11 and the color filter array. Polarizers (not shown) are attached to the outer side surfaces of the substrate 13, respectively.

In the liquid crystal panel 10, liquid crystal cells forming a pixel unit are arranged in a matrix form, and the liquid crystal cells form an image by adjusting light transmittance according to image signal information transmitted from a driver driving circuit (not shown).

In addition, one side of the liquid crystal panel 10 includes a driving driver (not shown) for driving unit pixels formed in the liquid crystal panel, and a flexible printed circuit board (FPCB) having one end connected to the liquid crystal panel. Not shown) is connected.

In addition, the backlight unit 20 may include an LED assembly 60 arranged along at least one edge length direction of the mold frame 30, a white or silver reflecting plate 25 seated on the bottom cover 50. And a light guide plate 23 mounted on the reflecting plate 25 and a plurality of optical sheets 21 interposed therebetween.

In this case, the LED assembly 60 is configured on one side of the light guide plate 23, and a plurality of LEDs 61 emitting white light and an LED substrate on which the LEDs 61 are mounted are referred to as FPCBs. , 63).

The plurality of optical sheets 21 are used for diffusing and condensing light incident from the light guide plate 23. Although not illustrated, the plurality of optical sheets 21 may include diffusion sheets, prism sheets, and protective sheets.

Meanwhile, the light guide plate 23 is disposed along the side of the LED 61 and is disposed on the rear surface of the liquid crystal panel 10 to guide light generated from the LED 61 to the rear surface of the liquid crystal panel 10. do.

The mold frame 30 is configured in the form of a square frame surrounding the side surface of the light guide plate 23, and the LED substrate on which the plurality of LEDs 61 are mounted together with the liquid crystal panel 10 on the mold frame 30. 63) is arranged.

In addition, a light shielding tape (not shown) is attached to the LED substrate 63 and the optical sheet 20, and the LED substrate 63 is fixed between the LED substrate 63 and the mold frame 30. Double-sided tape (not shown) is attached.

On the other hand, the reflector 25 is provided below the light guide plate 23, and reflects some light emitted to the lower part of the light guide plate 23 to the light exit surface (not shown) of the light guide plate 23 to increase the light efficiency. In addition, the reflection amount of the entire incident light is adjusted so that the entire emission surface has a uniform luminance distribution.

In addition, the bottom cover 50 has a rectangular box shape having an open top, and includes a light guide plate 23 and a reflecting plate 25 wrapped by the mold frame 30 in the bottom cover 50. Components of the backlight unit (not shown) are accommodated.

The liquid crystal panel 10 and the backlight unit 20 have a top cover 40 surrounding the top edge of the liquid crystal panel 10 and a backlight unit 20 with edges surrounded by a mold frame 30 having a rectangular frame. The bottom cover 50 covering the rear surface is respectively coupled to the front and rear to be integrated through the mold frame 30.

However, the backlight unit and the liquid crystal display device having the same according to the related art have the following problems.

According to the backlight unit and the liquid crystal display device having the same according to the related art, the thickness of the LCM becomes thinner according to the peeling trend of the liquid crystal display module (hereinafter referred to as LCM). For example, resistance, circuit, etc.) and the height of the LED thickness is also constrained so that the thickness of the mold frame is thin to avoid interference between the mold frame and the fixtures. In particular, when the components of the LED substrate are disposed inside the liquid crystal module (LCM), the rigidity of the LED frame becomes weaker as the height of the components of the LED substrate increases and the number of components increases. none.

In addition, according to the backlight unit and the liquid crystal display device having the same according to the related art, as shown in FIG. 3, only a part of the edge portion of the TFT array substrate of the liquid crystal panel is contacted and supported on the upper part of the mold frame. As a result, the edge portion of the TFT array substrate may be easily broken or broken.

Accordingly, the present invention is to solve the above problems, an object of the present invention is to improve the rigidity of the mold frame covered on the light guide plate incident surface by covering the horizontal extension portion of the mold frame on the light incident surface of the light guide plate. In providing.

In addition, another object of the present invention is because the edge portion of the TFT array substrate of the liquid crystal panel is seated and supported on the horizontal extension portion of the mold frame covered by the light incident surface of the light guide plate. An object of the present invention is to provide a liquid crystal display device which can prevent an edge portion from being broken or broken.

In order to achieve the above object, the liquid crystal display device according to the present invention comprises a LED assembly having a plurality of LEDs and the FPCB mounted with the plurality of LEDs; A light guide plate disposed adjacent to the plurality of LEDs; A mold frame surrounding the LED assembly and the light guide plate, the mold frame including a plurality of LEDs of the LED assembly and a horizontal extension part covering the light incident surface of the light guide plate; An optical sheet disposed on the light guide plate; A liquid crystal panel disposed on the mold frame including the horizontal extension part; A bottom cover for receiving the mold frame; And a top cover surrounding an upper edge of the liquid crystal panel and coupled to the mold frame and the bottom cover.

According to the liquid crystal display device having the backlight unit according to the present invention, the following effects are obtained.

According to the liquid crystal display device having the backlight unit according to the present invention, the stiffness of the mold frame covered on the light guide plate incident surface may be improved by covering the horizontal extension of the mold frame with the upper surface in contact with the light incident surface of the light guide plate.

In addition, according to the liquid crystal display device having the backlight unit according to the present invention, since the edge portion of the TFT array substrate of the liquid crystal panel is seated and supported on the horizontal extension portion of the mold frame which is covered with the light incident surface of the light guide plate. It is possible to prevent the edge portion of the TFT array substrate from being broken or broken by the load of the liquid crystal panel.

1 is a cross-sectional view of a liquid crystal display having a backlight unit according to the prior art.
2 is a plan view illustrating a light guide plate and a plurality of LEDs disposed inside a mold frame in a liquid crystal display device having a backlight unit according to the related art.
3 is a schematic view showing a state in which an edge portion of a TFT array substrate of a liquid crystal panel is broken in a liquid crystal display device having a backlight unit according to the prior art.
4 is an exploded perspective view of a liquid crystal display device having a backlight unit according to the present invention.
5 is a cross-sectional view of a liquid crystal display having a backlight unit according to the present invention.
FIG. 6 is a plan view illustrating a state in which a plurality of LEDs and a light incident surface of a light guide plate are covered by a horizontal extension of a mold frame in a liquid crystal display device having a backlight unit according to the present invention.
FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 6, and schematically illustrates a state in which a light guide plate is caught and supported by a locking protrusion provided at one side edge portion of a mold frame.
FIG. 8 is a bottom view of a liquid crystal display device having a backlight unit according to the present invention, which is a schematic view showing an LED assembly and a reflecting plate disposed inside and below a mold frame.
FIG. 9 is a cross-sectional view taken along the line VII-VII of FIG. 8, wherein the LEDs disposed inside the mold frame and the horizontal extension portion of the mold frame covering the light incident surface upper part of the light guide plate and the TFT of the liquid crystal panel disposed above the horizontal extension portion. It is a schematic diagram which shows the edge of an array substrate.
FIG. 10 is a cross-sectional view taken along the line VII-VII of FIG. 8, in which a light guide plate is caught and supported by a locking protrusion provided at both edges of one side lower portion of a mold frame, and a TFT array substrate of a liquid crystal panel disposed above the horizontal extension. It is a schematic diagram showing the edge of.

Hereinafter, a liquid crystal display device having a backlight unit according to the present invention will be described in detail with reference to the accompanying drawings.

4 is an exploded perspective view of a liquid crystal display device having a backlight unit according to the present invention.

5 is a cross-sectional view of a liquid crystal display having a backlight unit according to the present invention.

4 and 5, the liquid crystal display device according to the present invention includes a liquid crystal panel 110, a backlight unit 120 for supplying light to the liquid crystal panel 110, and the liquid crystal panel 110. And a mold frame 130 surrounding and supporting the backlight unit 120, a bottom cover 150 coupled to the mold frame 130, in which the backlight unit 120 is accommodated, and a front edge of the liquid crystal panel 110. It is configured to include a top cover 140 to cover the part.

Here, the liquid crystal panel 110 includes a color filter array substrate 113, a TFT array substrate 111, and a liquid crystal layer (not shown) interposed therebetween. In addition, although not shown in the drawing, the liquid crystal panel 110 is attached to the front of the color filter array substrate 113 and the rear of the TFT array substrate 111 so that light passing through the liquid crystal panel 110 is cross-polarized. And a rear polarizer (not shown, see 115a of FIG. 5).

In addition, the printed circuit board 119 is connected and modularized along at least one edge of the liquid crystal panel 110 via a connecting member 117 such as a flexible circuit board or a tape carrier package (TCP). During the process, the side of the mold frame 130 or the bottom cover 150 is appropriately folded to be in close contact.

The liquid crystal panel 110 is arranged in a matrix form of the liquid crystal cells forming a pixel unit, the liquid crystal cells to form an image by adjusting the light transmittance according to the image signal information transmitted from the driver driving circuit (not shown).

Although not shown in the figure, a plurality of gate lines and a plurality of data lines are formed in a matrix form in the TFT array substrate 111, and thin film transistors (TFTs) are formed at intersections of the gate lines and the data lines. Is formed. The signal voltage transmitted from the driver driving circuit (not shown) is applied between the pixel electrode and the common electrode (not shown) of the color filter array substrate 113 to be described later through the thin film transistor, and the liquid crystal between the pixel electrode and the common electrode is The light transmittance is determined according to the signal voltage.

Although not shown in the drawing, the color filter array substrate 113 includes a color filter and a common electrode which are formed by repeating red, green, and blue or cyan, magenta, and yellow colors with a black matrix. The common electrode is made of a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO).

In addition, one side of the liquid crystal panel 110 includes a driving driver (not shown) for driving unit pixels formed in the liquid crystal panel, and a flexible printed circuit board (FPCB) having one end connected to the liquid crystal panel. 119 is connected.

The backlight unit 120 may include an LED assembly 160 generating light, a light guide plate 123 for providing light generated by the LED assembly 160 to the front surface of the liquid crystal panel 110, and the light guide plate 123. Reflective plate 125 to improve the efficiency of the light by reflecting the light emitted to the back is attached to the back of the), and a plurality of optical sheets stacked on the front of the light guide plate 123 to scatter the light emitted from the light guide plate 123 (121).

Here, the LED assembly 160 may be any one of a cold cathode fluorescent lamp (CCFL), an external electrode fluorescent lamp (EEFL), and a light emitting diode (LED). Here, the case of applying a light emitting diode (hereinafter referred to as LED) is taken as an example.

In addition, the LED assembly 160 includes a plurality of LEDs 161 and a flexible printed circuit board 163 on which the plurality of LEDs 161 are mounted. The LED 161 is a side viewing type device, and the LED 161 emits light toward the light incident surface 123a of the light guide plate 123.

In addition, the LED substrate 163 is a flexible printed circuit board having excellent bending, and components, such as a circuit (not shown) or a resistor, are provided inside or on the top thereof, and the plurality of LEDs 161 are provided through the components. Supply external power. Here, the case where the LED assembly 160 is installed only on one side of the light guide plate 123 is described, but may be installed on both sides or three sides of the light guide plate 123 as necessary.

The plurality of optical sheets 121 are for diffusing and condensing light incident from the light guide plate 123. Although not shown in the drawing, the plurality of optical sheets 121 includes a diffusion sheet, a prism sheet, and a protective sheet. In some cases, it may be provided with two diffusion sheets and two prism sheets. At this time, the diffusion sheet 121 is composed of a base plate and a bead-shaped coating layer formed on the base plate. The diffusion sheet (not shown) serves to diffuse the light from the LED assembly 160 to supply to the liquid crystal panel 110. The diffusion sheet (not shown) may be used by overlapping two or three. In addition, the prism sheet (not shown) is formed in a triangular prism-shaped prism on the upper surface having a constant arrangement. The prism sheet (not shown) serves to collect light diffused from the diffusion sheet 121 in a direction perpendicular to the plane of the upper liquid crystal panel 110. Two prism sheets (not shown) are generally used, and the micro prisms formed on each prism sheet (not shown) form a predetermined angle. Therefore, the light passing through the prism sheet (not shown) almost passes vertically to provide a uniform luminance distribution. The uppermost protective sheet (not shown) protects the prism sheet (not shown) that is vulnerable to scratches.

Meanwhile, the light guide plate 123 is disposed along the side of the LED 161 and is disposed on the rear surface of the liquid crystal panel 110 to guide light generated from the LED 161 to the rear surface of the liquid crystal panel 110. do. The light guide plate 123 may include a light incident surface 123a receiving light from the LED 161, a light exit surface (not shown) extending from the light incident surface 123a to face the liquid crystal panel 110, and the LED ( The light emitted from 161 has a rear surface on which a dot pattern (not shown) is formed so that the light incident on the light incident surface 123a is incident to the light exit surface (not shown). Accordingly, the light guide plate 123 changes the light irradiated to the light incident surface 123a from the LED 161 disposed adjacent to the light incident surface 123a along one side of the light guide plate 123 to planar light. Not shown) is uniformly delivered to the liquid crystal panel 110. As the material of the light guide plate 123, a polymethy methacrylate (PMMA) having high strength does not easily deform or break and has a good transmittance.

Here, the light guide plate 123 has an inclined portion (not shown) is formed on the upper surface in contact with the light incident surface (123a), the entire upper surface except for this inclined portion (not shown) the light emitting surface (not shown) ) On the other hand, the light guide plate 123 may be formed in a wedge shape that becomes thinner and thinner as it moves away from the light incident surface 123a, or may be formed in a flat plate type. However, in the case of a liquid crystal display device applied to a small product such as a notebook PC or a mobile phone, a wedge-shaped light guide plate 123 may be applied. In general, the LED assembly 161 may be formed on a thick sidewall. It is provided.

The mold frame 130 is formed in a rectangular frame surrounding the side surface of the light guide plate 123, and is formed of a plastic material or a metal material such as a PC material. Here, a horizontal extension portion 131 protrudes from an upper portion of one side surface of the mold frame 130 so as to cover the upper surface of the light guide plate 123 that is in contact with the light incident surface 123a. In this case, the horizontal extension part 131 is disposed between the light guide plate 123 and the mold frame 130 together with an upper surface of the light guide plate 123 that is in contact with the light incident surface 123a. It is arranged to cover.

In addition, as shown in FIG. 5, an LED substrate (FPCB) 163 equipped with a plurality of LEDs 151 spaced at regular intervals is disposed inside the lower portion of the mold frame 130, and the LED substrate 163 is disposed. Both ends of the c) are bent and attached to both sides of the mold frame 130 to be coupled.

Here, a light blocking tape (not shown) having double-sided adhesive property is attached between the mold frame 130 and the LED substrate 163 so that the LED substrate 163 is fixed to the mold frame 130 without flow. do.

In addition, the bottom cover 150 has a rectangular box shape with an open top, and includes a light guide plate 123 and a reflecting plate 125 that are covered by the mold frame 130 in the bottom cover 150. Components of the backlight unit 120 are stored.

Therefore, the bottom cover 150 in which the liquid crystal panel 110 and the backlight unit 120 are accommodated is combined with the top cover 140 surrounding the top edge of the liquid crystal panel 110 and the side surface of the mold frame 130. Thus, a liquid crystal display device is formed.

On the other hand, with reference to Figures 6 to 10 with respect to the arrangement of the LED assembly and the upper surface and the horizontal surface formed to reinforce the rigidity on the upper mold frame and the light incident surface of the light guide plate disposed to be disposed below. Let's take a closer look.

FIG. 6 is a plan view illustrating a state in which a plurality of LEDs and a light incident surface of a light guide plate are covered by a horizontal extension of a mold frame in a liquid crystal display device having a backlight unit according to the present invention.

FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 6, and schematically illustrates a state in which a light guide plate is caught and supported by a locking protrusion provided at one side edge portion of a mold frame.

FIG. 8 is a bottom view of a liquid crystal display device having a backlight unit according to the present invention, which is a schematic view showing an LED assembly and a reflecting plate disposed inside and below a mold frame.

FIG. 9 is a cross-sectional view taken along the line VII-VII of FIG. 8, wherein the LEDs disposed inside the mold frame and the horizontal extension portion of the mold frame covering the light incident surface upper part of the light guide plate and the TFT of the liquid crystal panel disposed above the horizontal extension portion. It is a schematic diagram which shows the edge of an array substrate.

FIG. 10 is a cross-sectional view taken along the line VII-VII of FIG. 8, in which a light guide plate is caught and supported by a locking protrusion provided at both edges of one side lower portion of a mold frame, and a TFT array substrate of a liquid crystal panel disposed above the horizontal extension. It is a schematic diagram showing the edge of.

As illustrated in FIGS. 6, 8, and 10, a plurality of LEDs 161 are disposed in the lower side of one side of the mold frame 130, and the light incident surface of the light guide plate 123 is adjacent to the plurality of LEDs 161. 123a is in contact. In this case, the plurality of LEDs 161 are disposed in a state in which the plurality of LEDs 161 are spaced apart from the LED substrate 163 by a predetermined interval, and both ends of the LED substrate 163 are bent at both sides of the mold frame 130. Attached. In addition, since components for driving the plurality of LEDs 161, for example, resistors, are disposed on the LED substrate 163 on which the plurality of LEDs 161 are mounted, these components are conventionally liquid crystals. In the case of being disposed inside the module LCM, as the height of these components increases and the number thereof increases, the rigidity of the mold frame on the light incident part becomes thinner. The rigidity of the mold frame 130 is reinforced by forming the horizontal extension part 131 on the upper part of the mold frame 130 on the light side. In addition, the horizontal extension portion 131 of the mold frame 130 serves to protect the upper part of the light guide plate 123 together with the plurality of LEDs 161. In particular, since the horizontal extension part 131 absorbs a load applied by components disposed on the light guide plate 123, for example, the optical sheet 121, the liquid crystal panel 110, and the like, the light guide plate is the same. 123 and LED 161 are securely protected.

6 and 7, the opening 131a is formed in the horizontal extension part 131 of the mold frame 130, and the locking protrusions 133 are formed at both edges of the lower side of the mold frame 130. ) Is formed, the fixing grooves 123b provided at both lower edges of the lower portion of the light guide plate 123 are supported by the locking protrusion 133 so that the light guide plate 123 can be safely supported. In this case, the opening 131a formed in the horizontal extension part 131 may have an obstacle in which the fixing groove 123b of the light guide plate 123 is provided below the mold frame 130 during the liquid crystal module (LCM) assembly process. It is possible to visually check whether the support is correctly caught on the machine (133).

Further, as shown in FIGS. 9 and 10, the liquid crystal panel 110 is seated and disposed on the mold frame 130 including the horizontal extension part 131 of the mold frame 130. In this case, an edge portion of the TFT array substrate 111 constituting the liquid crystal panel 110, that is, a portion other than the screen display area, is seated and supported on the horizontal extension portion 131 of the mold frame 130. In addition, a light shielding tape 170 for blocking light from leaking to a portion other than the screen display area of the TFT array substrate 111 of the liquid crystal panel 110 is other than the horizontal extension part 131 and the screen display area of the liquid crystal panel. It is attached between the edges of the TFT array substrate 111, which is a part of, to block the generation of light leakage.

As described above, according to the liquid crystal display device having the backlight unit according to the present invention, there are the following effects.

According to the liquid crystal display device having the backlight unit according to the present invention, the rigidity of the mold frame covered on the light guide plate incident surface can be improved by covering the light extending surface of the light guide plate so that the horizontal extension of the mold frame is covered.

In addition, according to the liquid crystal display device having the backlight unit according to the present invention, since the edge portion of the TFT array substrate of the liquid crystal panel is seated and supported on the horizontal extension of the mold frame covered by the light incident surface of the light guide plate, the liquid crystal is conventionally used. It is possible to prevent the edge portion of the TFT array substrate from breaking or breaking due to the load of the panel or the like.

 Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that.

Therefore, since the embodiments described above are provided to completely inform the scope of the invention to those skilled in the art to which the present invention pertains, it should be understood that they are exemplary in all respects and not limited. The invention is only defined by the scope of the claims.

110: liquid crystal panel 111: TFT array substrate
113: color filter array substrate 115a, 115b: polarizing plate
117: connecting member 119: printed circuit board
120: backlight unit 121: optical sheet
123: Light guide plate 123a: Light incident surface
123b: fixing groove 125: reflector
130: mold frame 131: horizontal extension portion
131a: opening 133: protrusion
140: top cover 150: bottom cover
160: LED assembly 161: LED
163: LED substrate 170: shading tape

Claims (6)

An LED assembly having a plurality of LEDs and an LED substrate on which the plurality of LEDs are mounted;
A light guide plate disposed adjacent to the plurality of LEDs;
A mold frame surrounding the LED assembly and the light guide plate and having a horizontal extension covering a plurality of LEDs of the LED assembly and an upper surface in contact with a light incident surface of the light guide plate;
An optical sheet disposed on the light guide plate;
A liquid crystal panel disposed on the mold frame including the horizontal extension part;
A bottom cover for receiving the mold frame; And
And a top cover covering an upper edge of the liquid crystal panel and coupled to the mold frame and the bottom cover. The liquid crystal display of claim 1, wherein a locking protrusion is formed at an edge portion of a lower side of the mold frame, and a fixing groove is fixed to and supported by the locking protrusion at an edge portion of a lower side of the light incident surface of the light guide plate. Device. The liquid crystal display of claim 2, wherein an opening is formed in a horizontal extension portion of the mold frame corresponding to the locking protrusion to visually see that the locking protrusion of the light guide plate is caught by the locking protrusion. 2. The liquid crystal display device according to claim 1, wherein a portion of the TFT array substrate, which is a portion other than the screen display area of the liquid crystal panel, is mounted and supported on the horizontal extension portion of the mold frame. The liquid crystal display of claim 1, wherein the LED assembly including the plurality of LEDs and the LED substrate on which the LEDs are mounted is disposed under the mold frame. The liquid crystal display device according to claim 1, wherein a light shielding tape is interposed between the horizontal extension portion and the TFT array substrate which is a portion other than the screen display area of the liquid crystal panel.

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