KR20160004428A - Liquid crystal display device - Google Patents

Abstract

The present invention relates to a liquid crystal display device and, more particularly, to a liquid crystal display device which can prevent light leakage from occurring by warpage of the liquid crystal panel. According to the present invention, a guide panel is made of a thin metallic material which is hemming-processed, the liquid crystal panel is fixed to the guide panel through an adhesive pad such as a double-sided tape and then, the guide panel and a bottom cover are modularized only through an adhesive light shielding tape, thereby buffering the warpage of the liquid crystal panel by a degree of freedom of the guide panel even if the warpage of the liquid crystal panel occurs. Accordingly, a light leakage phenomenon of the liquid crystal panel caused by the warpage of the liquid crystal panel can be prevented from being generated. Furthermore, the guide panel is made of the thin metallic material so as to have more excellent strength and the thinner thickness compared to a conventional guide panel, so the liquid crystal display device which is light and slim, and has a narrow bezel, can be provided. In addition, the liquid crystal display device, which is lighter and slimmer, and has narrow bezel, can be provided through the deletion of a top cover.

Description

[0001] Liquid crystal display device [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device capable of preventing a light leakage phenomenon due to warping of a liquid crystal panel.

A liquid crystal display device (LCD), which is advantageous for moving picture display and has a large contrast ratio and is actively used in TVs and monitors, exhibits optical anisotropy and polarization properties of a liquid crystal, And the like.

Such a liquid crystal display device has a liquid crystal panel in which a liquid crystal panel is interposed between two adjacent substrates through a liquid crystal layer as an essential component and changes the alignment direction of the liquid crystal molecules in an electric field in the liquid crystal panel to realize a difference in transmittance do.

However, since the liquid crystal panel does not have its own light emitting element, a separate light source is required to display the difference in transmittance as an image. To this end, a backlight having a light source is disposed on the back surface of the liquid crystal panel.

1 is a cross-sectional view of a liquid crystal display including a backlight unit of a general edge type using an LED as a light source.

As shown in the figure, a typical liquid crystal display device includes a liquid crystal panel 10, a backlight unit 20, a guide panel 30, a cover bottom 50, and a top cover 40.

The liquid crystal panel 10 is constituted by first and second substrates 12 and 14 which are in contact with each other with a liquid crystal layer interposed therebetween, which plays a key role in image display.

A backlight unit 20 is provided behind the liquid crystal panel 10.

The backlight unit 20 includes an LED assembly 29 arranged along the longitudinal direction of at least one edge of the guide panel 30 and composed of a PCB 29b on which a plurality of LEDs 29a and LEDs 29a are mounted, A reflective plate 25 that is seated on the bottoms 50, a light guide plate 23 that is seated on the reflective plate 25, and an optical sheet 21 that is located on top of the reflective plate 25.

The liquid crystal panel 10 and the backlight unit 20 are covered with a top cover 40 covering the top edge of the liquid crystal panel 10 with the edges thereof being surrounded by a rectangular guide panel 30, The cover bottoms 50 are integrally joined to each other through the guide panel 30.

And reference numerals 19a and 19b denote polarizers attached to the front and back surfaces of the liquid crystal panel 10 to control the polarization direction of light, respectively.

On the other hand, in recent years, such a liquid crystal display device has been widely used, such as a desktop computer monitor and a wall-mounted television, as well as a portable computer, and studies have been actively carried out to have a massively reduced weight and volume while having a wide display area It is progressing.

Further, in addition to being lightweight and thin, the liquid crystal display device is also required to have a narrow bezel in which a display area is wide and a bezel area which is a non-display area other than the display area is formed as small as possible.

Thus, by removing the top cover 40 and attaching and fixing the liquid crystal panel 10 to the guide panel 30 through a bonding pad (not shown) such as a double-sided tape, a lightweight, thin and narrow bezel is realized .

However, contraction and expansion due to the material properties of the polarizers 19a and 19b attached to both sides of the liquid crystal panel 10 occur. In such a case, in the structure in which the liquid crystal panel 10 is attached and fixed on the guide panel 30 through an adhesive pad (not shown), when the polarizing plates 19a and 19b are contracted and expanded, So that the liquid crystal panel 10 is warped and light leakage phenomenon of the liquid crystal panel 10 occurs.

Therefore, the image quality of the liquid crystal display device is lowered.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a liquid crystal display device which realizes a lightweight, thin and narrow bezel and can buffer a deformation caused by shrinkage and expansion of a liquid crystal panel The purpose.

A second object of the present invention is to prevent a light leakage phenomenon from occurring, and a third object is to prevent the image quality of the liquid crystal display device from being lowered finally.

In order to achieve the above object, the present invention provides a liquid crystal display comprising: a liquid crystal panel; A backlight unit positioned below the liquid crystal panel; A second vertical portion which is hemmed from the end of the first vertical portion and which covers the side surface of the backlight unit, and a second vertical portion that is vertically bent from the end of the second vertical portion, the first vertical portion including a side surface of the liquid crystal panel and the backlight unit, A guide panel including a horizontal portion for supporting a rear edge of the liquid crystal panel; A cover bottom including a horizontal plane on which the backlight unit is seated and a vertically bent side from the horizontal plane; And a fastening structure for modifying the guide panel and the cover bottom and for imparting a degree of freedom to the guide panel.

The adhesive shielding tape covers an upper surface edge of the liquid crystal panel, an outer surface of the first vertical portion of the guide panel, and a rear edge of the cover bottom, The light shielding tape includes an adhesive layer and a base film film supporting the adhesive layer, wherein the adhesive layer is removed from the area where the second vertical portion is hemmed to a part of the back edge of the cover bottom.

One end of the bracket is attached to the guide panel, the other end of the bracket is attached to the cover bottom, and the bracket is attached to the guide panel at one end And the area except the other end attached to the cover bottom are bent.

The bracket may include a first piece attached to the inner surface of the second vertical portion of the guide panel, a second piece attached to the bottom surface of the cover bottom, a third piece bent perpendicularly from the first piece, And a fourth piece bent at a predetermined angle from the third piece to connect the third piece and the second piece, wherein the bracket is attached to the guide panel and the cover bottom through an adhesive tape.

In addition, the fastening structure is made of an adhesive black film having elasticity, one end of the adhesive black film is attached to the inner surface of the second vertical portion, and the other end of the adhesive black film is attached to the back surface of the cover bottom Wherein the adhesive black film has a first area attached to an inner surface of the second vertical part, a second area attached to a back surface of the cover bottom, and an adhesive layer formed between the first and second areas, And a third region which does not have the second region.

The third region has a round shape protruding from the backside of the cover bottom, and the adhesive black film is attached while completely enclosing the inner surface of the second vertical portion.

In addition, the first and second vertical portions of the guide panel protrude from the backside of the cover bottom, and the guide panel is subjected to a matte painting process or a black color film is attached.

At this time, the horizontal portion presses a part of the edge of the optical sheet.

As described above, according to the present invention, the guide panel is formed of a thin metal material having a hemming treatment, the liquid crystal panel is fixed to the guide panel through a bonding pad such as a double-sided tape on the guide panel, Modularization is performed only through the glare shielding tape so that the warpage of the liquid crystal panel is buffered by the degree of freedom of the guide panel even if warping of the liquid crystal panel occurs. Accordingly, there is an effect that light leakage phenomenon of the liquid crystal panel due to warping of the liquid crystal panel can be prevented.

In addition, since the guide panel is formed of a thin metal material, it can be formed to have a stiffness and a thin thickness as compared with the conventional guide panel, thereby providing a liquid crystal display device having a lightweight, thin and narrow bezel have.

In addition, there is an effect that a liquid crystal display device having a light weight, a thinner shape, and a narrow bezel can be provided through elimination of a top cover.

Further, since the vertical portion of the guide panel is formed so as to protrude from the back surface of the cover bottom, the appearance of the liquid crystal display device can be improved, and a lightweight and thin liquid crystal display device can be provided through elimination of the outer case , The process cost and the process time can be reduced, and the efficiency of the process can be improved.

In addition, the horizontal portion of the guide panel can press the edge of the optical sheet of the backlight unit to prevent the flow of the optical sheet. When the liquid crystal panel is bent, the degree of freedom of the guide panel Can be further improved.

1 is a cross-sectional view of a liquid crystal display including a backlight unit of a general edge type using an LED as a light source.
2 is a perspective view schematically showing a liquid crystal display device according to a first embodiment of the present invention.
FIGS. 3A to 3C are cross-sectional views schematically showing a modularization process of the liquid crystal display device of FIG. 2;
4 is a cross-sectional view schematically showing a modular liquid crystal display device according to a second embodiment of the present invention.
5 is a cross-sectional view schematically showing a modularized liquid crystal display device according to a third embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

- First Embodiment -

2 is a perspective view schematically showing a liquid crystal display device according to a first embodiment of the present invention.

As shown in the figure, the liquid crystal display according to the first embodiment of the present invention mainly includes a liquid crystal panel 110, a backlight unit 120, a guide panel 130, and a cover bottom 150.

For the sake of convenience, the backlight unit 120 is disposed behind the liquid crystal panel 110 under the assumption that the display surface of the liquid crystal panel 110 faces forward, The cover bottom 150 is positioned on the back surface of the backlight unit 120 in a state where the guide panel 130 having a rectangular shape is wiped.

Let's take a closer look at each of these.

First, the liquid crystal panel 110 plays a key role in image display of a liquid crystal display device. The liquid crystal panel 110 includes a first substrate 112 and a second substrate 114 which are bonded to each other and a liquid crystal layer (Not shown).

Although not shown in the figure, a plurality of gate lines and data lines cross each other on the inner surface of a first substrate 112 called a lower substrate or an array substrate, pixels are defined, and a thin film transistor (TFT) : TFT), and a transparent pixel electrode formed on each pixel and a common electrode are connected.

On the inner surface of the second substrate 114 called an upper substrate or a color filter substrate, color filters of red (R), green (G), and blue (B) And a black matrix for covering the gate lines, the data lines, and the thin film transistors.

An upper and a lower alignment film (not shown) for determining the initial alignment direction of the liquid crystal are interposed at the boundary between the first and second substrates 112 and 114 and the liquid crystal layer (not shown) A seal pattern (not shown) is formed along the edges of the substrates 112 and 114 to prevent leakage of a liquid crystal layer (not shown) filled between the substrates 112 and 114.

Polarizing plates 119a and 119b (see FIG. 3A) for selectively transmitting only specific light are attached to the outer surfaces of the first and second substrates 112 and 114, respectively.

A printed circuit board 117 is connected to the liquid crystal panel 110 via a connection member 116 such as a flexible circuit board or a tape carrier package (TCP) along one edge of the liquid crystal panel 110, And is brought into close contact with the side surface of the panel 130 or the back surface of the cover bottom 150.

Accordingly, when the selected thin film transistor for each gate line is turned on by the on / off signal of the thin film transistor which is transferred to the gate line, the liquid crystal panel 110 supplies the image signal of the data line And the alignment direction of the liquid crystal molecules is changed by the electric field between the pixel electrode and the common electrode which is generated thereby, and the difference in transmittance is shown.

In the liquid crystal display device according to the present invention, a backlight unit 120 is provided for supplying light from the rear surface of the liquid crystal display panel 110 so that the difference in transmittance of the liquid crystal panel 110 is externally expressed.

The backlight unit 120 includes an LED assembly 129 arranged along at least one longitudinal edge of the cover bottom 150, a reflection plate 125, a light guide plate 123 mounted on the reflection plate 125, And an optical sheet 121 positioned above the light guide plate 123.

The LED assembly 129 is a light source of the backlight unit 120 and is disposed at one side of the light guide plate 123 to face the light incident surface of the light guide plate 123. The LED assembly 129 includes a plurality of LEDs 129a, And a PCB 129b on which a plurality of LEDs 129a are mounted with a predetermined spacing.

The plurality of LEDs 129a emit light having colors of red (R), green (G), and blue (B) toward the front of the light guide plate 123, and the plurality of RGB LEDs 129a ) Can be turned on at once to realize white light by color mixing.

In particular, in recent years, a blue LED 129a including a blue LED chip having excellent luminous efficiency and brightness has been used for improving the luminous efficiency and brightness, and a phosphor such as yttrium aluminum garnet (YAG: Ce) doped with cerium, A blue LED 129a made of a yellow phosphor is used.

The blue light emitted from the LED 129a is mixed with the yellow light transmitted through the phosphor and emitted by the fluorescent material, thereby realizing white light.

The light guiding plate 123 through which the light emitted from the plurality of LEDs 129a is incident is formed such that the light incident from the LED 129a travels in the light guiding plate 123 by total reflection several times, And provides a surface light source to the liquid crystal panel 110.

The light guide plate 123 may include a pattern of a specific shape on the lower surface to supply a uniform surface light source. The pattern may be formed in various shapes such as an elliptical pattern, a polygon pattern, a hologram pattern, and the like in order to guide light incident into the light guide plate 123. The pattern is formed on the lower surface of the light guide plate 123 by a printing method or an injection method.

The reflection plate 125 is disposed on the back surface of the light guide plate 123 and reflects light passing through the back surface of the light guide plate 123 toward the liquid crystal panel 110 to improve the brightness of light.

The optical sheet 121 on the light guide plate 123 includes a diffusion sheet and at least one light condensing sheet and diffuses or condenses the light passing through the light guide plate 123 to provide a more uniform surface light source to the liquid crystal panel 110 Let it enter.

The liquid crystal panel 110 and the backlight unit 120 are modularized through the guide panel 130 and the cover bottom 150. The cover bottom 150 is formed by mounting the backlight unit 120 including the liquid crystal panel 110 The horizontal surface 151 serves as a lower frame that supports the entire liquid crystal display device and minimizes the occurrence of light loss. The edge of the horizontal surface 151 is bent vertically to cover the side surface 153 of the cover bottom It accomplishes.

Then, the guide panel 130, which covers the edge of the backlight unit 120, is seated on the cover bottom 150.

The guide panel 130 supports the edges of the liquid crystal panel 110 and has a rectangular shape for covering the edges of the backlight unit 120. The guide panel 130 includes a liquid crystal panel 110 and vertical parts 131 surrounding the sides of the backlight unit 120 And a horizontal part 133 for separating the position of the liquid crystal panel 110 and the backlight unit 120 from the vertical part 131.

The liquid crystal panel 110 is attached and fixed on the horizontal portion 133 through a bonding pad 160 (see Fig. 3A) such as a double-sided tape.

The guide panel 130 mounted on the cover bottom 150 is modularized with a fastening tool capable of imparting a degree of freedom to the guide panel 130. That is, the cover bottom 150 is separated from the top edge of the liquid crystal panel 110, Shielding tape 170 (see FIG. 3C) covering the back edge of the cover bottom 150. The cover bottom 150 is modularized with the adhesive shielding tape 170 (see FIG.

Here, the guide panel 130 may be referred to as a support main or main support, or a mold frame, and the cover bottom 150 may be referred to as a bottom cover or a bottom cover.

Here, the liquid crystal display of the present invention omits the top cover (40 in Fig. 1) positioned in front of the liquid crystal panel 110, so that the liquid crystal display device can be made thin and lightweight and simplify the process. Also, the process cost can be reduced.

In addition to being lightweight and thin, the display area is expanded by omitting the top cover (40 in Fig. 1), and at the same time, a bezel area, which is a non-display area other than the display area, is narrowed to have a narrow bezel A liquid crystal display device can be provided.

Here, the guide panel 130 according to the first embodiment of the present invention is made of a metal material having a small thickness such as aluminum (Al), stainless steel (SUS), cold rolled steel plate (HGI) and electro galvanized steel plate A first vertical portion 131a which is formed on the outer side surface of the liquid crystal panel 110 and a side surface of the backlight unit 120 and a hemming process is performed from the end of the first vertical portion 131a, And an end of the second vertical part 131b is bent perpendicularly to the first and second vertical parts 131a and 131b to form a horizontal part 133).

Here, hemming is a process of folding and folding the end of a sheet material. This process can enhance the rigidity of the product, enhance the appearance, and eliminate the sharp surface.

Therefore, the vertical portion 131 of the guide panel 130 is configured to have a double sidewall for guiding the side surface of the backlight unit 120 through the hemming process, so that the rigidity of the guide panel 130 is improved.

The guide panel 130 has an excellent rigidity and a very thin thickness as compared with the conventional guide panel formed of a mold material. Accordingly, it is possible to provide a liquid crystal display device having a lightweight, thin, and narrow bezel.

Particularly, the guide panel 130 according to the first embodiment of the present invention is modularized with the cover bottom 150 through the adhesive light shield tape 170 (see FIG. 3C), and the guide panel 130 and the cover bottom 150 There is no separate fastening structure between the guide panel 130 and the guide panel 130. Thus, the guide panel 130 has a certain degree of freedom in accordance with the flow in the modularized liquid crystal display device.

At this time, the liquid crystal panel 110 is attached and fixed through the adhesive pad 160 (see FIG. 3A) such as the guide panel 130 and the double-sided tape so that the liquid crystal panel 110 is attached to both outer surfaces of the liquid crystal panel 110 The warpage of the liquid crystal panel 110 can be buffered by the degree of freedom of the guide panel 130 even if warping occurs due to contraction and expansion due to the material properties of the polarizing plates 119a and 119b (see FIG.

It is possible to prevent the light leakage phenomenon of the liquid crystal panel 110, which is caused by the bending of the liquid crystal panel 110, from occurring.

As described above, in the liquid crystal display device according to the first embodiment of the present invention, the guide panel 130 is formed of a thin metal material having a hemming process, and the liquid crystal panel 110 is mounted on the guide panel 130, The guiding panel 130 and the cover bottom 150 are modularized only through the adhesive shielding tape 170 (see FIG. 3C) after fixing the guiding panel 130 to the guide panel 130 through the adhesive pad 160 (see FIG. 3A) The warpage of the liquid crystal panel 110 can be buffered by the degree of freedom of the guide panel 130 even if the panel 110 is warped.

Accordingly, it is possible to prevent light leakage of the liquid crystal panel 110 due to warping of the liquid crystal panel 110.

Further, since the guide panel 130 is formed of a thin metal material, it is possible to provide a liquid crystal display device having a light weight, a thinner shape, and a narrow bezel since the guide panel 130 is superior in rigidity and thinner than conventional guide panels have.

Further, a liquid crystal display device having a lightweight, thin, and narrow bezel can be provided through elimination of the top cover (40 in FIG. 1).

3A to 3C are cross-sectional views schematically showing the modularization process of the liquid crystal display of FIG.

As shown in FIG. 3A, the LED assembly (LED 129) including a reflection plate 125, a light guide plate 123, and a PCB (129b in FIG. 2) on which an LED (129a in FIG. 2) and an LED And the optical sheets 121 are stacked on the light guide plate 123 to form a backlight unit (120 of FIG. 2).

This backlight unit (120 in FIG. 2) is seated on the horizontal surface 151 of the cover bottom 150.

The liquid crystal panel 110 in which a liquid crystal layer (not shown) is interposed between the first and second substrates 112 and 114 is bonded to the horizontal portion 133 of the guide panel 130 Is attached and fixed through the pad (160).

At this time, polarizing plates 119a and 119b for selectively transmitting only specific light are attached to the outer surfaces of the first second substrates 112 and 114 of the liquid crystal panel 110, And is guided by the first vertical portion 131a of the first guide portion 130.

3B, the liquid crystal panel 110 attached and fixed on the horizontal portion 133 of the guide panel 130 is inserted into the backlight unit 120 (see FIG. 2) mounted on the cover bottom 150, So that the cover bottom 150 can be coupled to the back surface of the guide panel 130.

The outer surface of the side surface 153 of the cover bottom 150 is in close contact with the inner surface of the second vertical portion 131b that has been hemmed from the end of the first vertical portion 131a of the guide panel 130, The double sidewall including the first and second vertical portions 131a and 131b of the light guide plate 130 guides the side surface of the backlight unit (120 in FIG. 2).

At this time, the horizontal portion 133 of the guide panel 130 can prevent the flow of the optical sheet 121 by pressing a part of the edge of the optical sheet 121 of the backlight unit (120 of FIG. 2) When the panel 110 is warped, the degree of freedom of the guide panel 130 can be further improved through the flexible nature of the optical sheet 121.

3C, the guide panel 130 and the cover bottom 150 are modularly integrated with each other through the adhesive shielding tape 170. The adhesive shielding tape 170 is attached to the liquid crystal panel 110, To the outer edge of the first vertical portion 131a of the guide panel 130 and the rear edge of the cover bottom 150. [

Thus, the modularization process of the liquid crystal display device according to the first embodiment of the present invention is completed.

Here, the modularized liquid crystal display device according to the first embodiment of the present invention is formed by forming the guide panel 130 with a thin metal material having a hemming process and bonding the liquid crystal panel 110 to the guide panel 130 with a double- The guiding panel 130 and the cover bottom 150 are modularized only through the adhesive shading tape 170 after the fixing of the guide panel 130 and the cover bottom 150 to the guide panel 130 through the pad 160. Even if the deflection of the liquid crystal panel 110 occurs The warpage of the liquid crystal panel 110 can be buffered by the degree of freedom of the guide panel 130. [

Accordingly, it is possible to prevent light leakage of the liquid crystal panel 110 due to warping of the liquid crystal panel 110.

Further, since the guide panel 130 is formed of a thin metal material, it is possible to provide a liquid crystal display device having a light weight, a thinner shape, and a narrow bezel since the guide panel 130 is superior in rigidity and thinner than conventional guide panels have.

The adhesive shading tape 170 according to the first embodiment of the present invention is provided with an upper surface edge of the liquid crystal panel 110, an outer surface of the first vertical portion 131a of the guide panel 130, The adhesive layer 171 bonded to the back edge of the adhesive layer 171 and the black color base film 173 supporting the adhesive layer 171. The adhesive light shield tape 170 is bonded to the base film 173 ) Is formed on the surface of the substrate.

That is, the adhesive light shielding tape 170 is peeled from the end of the first vertical portion 131a of the guide panel 130 to a portion of the back edge of the cover bottom 150 by the second vertical portion 131b, And the base film region A in which the guide film panel 171 is removed. Thus, the degree of freedom of the guide panel 130 according to the flow is further improved.

When warping of the liquid crystal panel 110 occurs due to contraction and expansion due to the material properties of the polarizers 119a and 119b attached to both sides of the liquid crystal panel 110, 130 to prevent light leakage of the liquid crystal panel 110 from occurring.

Accordingly, it is possible to prevent a problem that the image quality of the liquid crystal display device is lowered.

Therefore, it is possible to omit a separate component such as an optical sheet for preventing the light leakage of the liquid crystal panel 110, thereby realizing the light weight and thinness of the liquid crystal display device, and simplifying the process of the liquid crystal display device, .

Further, since the guide panel 130 is formed of a thin metal material, it is possible to provide a liquid crystal display device having a light weight, a thinner shape, and a narrow bezel since the guide panel 130 is superior in rigidity and thinner than conventional guide panels have.

Further, a liquid crystal display device having a lightweight, thin, and narrow bezel can be provided through elimination of the top cover (40 in FIG. 1).

- Second Embodiment -

4 is a cross-sectional view schematically showing a modular liquid crystal display according to a second embodiment of the present invention.

An LED assembly 129 including a reflection plate 125, a light guide plate 123, a PCB 129b on which the LED 129a and the LED 129a are mounted, and a light guide plate 123 on the light guide plate 123, 121 are stacked to form a backlight unit 120. [

A liquid crystal panel 110 having a liquid crystal layer (not shown) interposed therebetween is disposed between the first and second substrates 112 and 114 at an upper portion of the backlight unit 120, And 114 are attached with polarizing plates 119a and 119b selectively transmitting only specific light.

The backlight unit 120 and the liquid crystal panel 110 are surrounded by the vertical portion 131 of the guide panel 130 and the cover bottom 150 is coupled to the backside thereof.

Here, the guide panel 130 according to the second embodiment of the present invention is made of a metal material having a small thickness such as aluminum (Al), stainless steel (SUS), cold rolled steel plate (HGI) and electro galvanized steel plate And the guide panel 130 includes a first vertical portion 131a forming an outermost periphery of the modular liquid crystal display device, a second vertical portion 131b hemming from the end of the first vertical portion 131a, And a horizontal portion 133 bent perpendicularly from the vertical portion 131b to the first and second vertical portions 131a and 131b.

The liquid crystal panel 110 is attached and fixed on the horizontal portion 133 with a rear edge supported by a bonding pad 160 such as a double-sided tape through a bonding pad 160. The first vertical portion 131a contacts the side surface of the liquid crystal panel 110 And the inner surface of the second vertical portion 131b is in close contact with the outer surface of the side surface 153 of the cover bottom 150 so that the backlight unit 120 includes the first and second vertical portions 131a and 131b The edge is surrounded by the double sidewall.

The guide panel 130 and the cover bottom 150 are modularized by a fastening tool capable of imparting a degree of freedom to the guide panel 130. That is, And is partially integrated with each other through a bracket 200 attached through a part of the part 131 and an adhesive tape 180 such as a double-sided tape.

The bracket 200 is made of a thin metal. Only a part of the guide panel 130 and the cover bottom 150 are attached to the bracket 200, so that the bracket 200 serves as a leaf spring.

That is, one end of the bracket 200 is attached to a part of the guide panel 130 through the adhesive tape 180, and the other end of the bracket 200 is connected to a part of the backside of the cover bottom 150 and the adhesive tape 180 ).

The bracket 200 has a certain degree of freedom with respect to the flow between the guide panel 130 and the cover bottom 150. The degree of freedom of the bracket 200 is controlled by the guide panel 130, Degree of freedom.

Therefore, the guide panel 130 according to the second embodiment of the present invention has a certain degree of freedom in accordance with the flow in the modularized liquid crystal display device.

Even if the liquid crystal panel 110 is bent due to contraction and expansion due to the material properties of the polarizers 119a and 119b attached to both outer sides of the liquid crystal panel 110, It is possible to prevent the light leakage phenomenon of the liquid crystal panel 110 caused by the warping of the liquid crystal panel 110 by buffering the warp of the panel 110.

It is preferable that the bracket 200 is formed to have a bent portion B in order to further improve the degree of freedom of the bracket 200. The bracket 200 is disposed on the second vertical portion 131b of the guide panel 130, A first piece 210 attached through an adhesive tape 180 to the inner side of the cover bottom 150 and a second piece 220 attached to the backside of the cover bottom 150 through the adhesive tape 180, A third piece 230 and a third piece 230 that are bent vertically from the first piece 210 to have a plurality of bends B between the first piece 210 and the second piece 220, And a fourth part 240 bent at a predetermined angle from the third part 230 so as to connect the first and second parts 220 and 220.

At this time, the vertical portion 131 including the first and second vertical portions 131a and 131b of the guide panel 130 is formed to protrude from the back surface of the cover bottom 150, It is possible to prevent the bracket 200 from being seen from the side of the modular liquid crystal display device, thereby improving the appearance of the liquid crystal display device.

Therefore, the interior and design aspects of the liquid crystal display device can be improved without a separate external case. Accordingly, it is possible to provide a lightweight and thin liquid crystal display device by eliminating the external case, and also the process cost and the process time can be reduced, thereby improving the process efficiency.

Meanwhile, in the liquid crystal display device according to the second embodiment of the present invention, light leakage phenomenon that light is reflected by the surface of the guide panel 130 may be generated by the guide panel 130 made of a metal material. It is preferable that the guide panel 130 made of a material is subjected to a matte painting process or a black color film is adhered thereto.

The horizontal portion 133 of the guide panel 130 presses a part of the edge of the optical sheet 121 of the backlight unit 120 to prevent the optical sheet 121 from flowing, The degree of freedom of the guide panel 130 can be further improved through the flexible nature of the optical sheet 121. [

As described above, in the liquid crystal display device according to the second embodiment of the present invention, the guide panel 130 is formed of a thin metal material having a hemming process, and the liquid crystal panel 110 is attached to the guide panel 130 The guide panel 130 and the cover bottom 150 are modularized through the bracket 200 having a large degree of freedom after the fixing of the guide panel 130 and the cover bottom 150 through the adhesive pad 160. Even if the guide panel 130 is bent, The deflection of the liquid crystal panel 110 can be buffered by the degree of freedom of the liquid crystal panel 110. [

Accordingly, it is possible to prevent a problem that the image quality of the liquid crystal display device is lowered.

Therefore, it is possible to omit a separate component such as an optical sheet for preventing the light leakage of the liquid crystal panel 110, thereby realizing the light weight and thinness of the liquid crystal display device, and simplifying the process of the liquid crystal display device, .

Further, since the guide panel 130 is formed of a thin metal material, it is possible to provide a liquid crystal display device having a light weight, a thinner shape, and a narrow bezel since the guide panel 130 is superior in rigidity and thinner than conventional guide panels have.

Further, a liquid crystal display device having a lightweight, thin, and narrow bezel can be provided through elimination of the top cover (40 in FIG. 1).

The vertical portion 131 including the first and second vertical portions 131a and 131b of the guide panel 130 is formed to protrude from the back surface of the cover bottom 150, It is possible to prevent the bracket 200 from being seen from the side of the modular liquid crystal display device, thereby improving the appearance of the liquid crystal display device.

As a result, the lightweight and thin liquid crystal display device can be provided by eliminating the case, and the process cost and process time can be reduced, thereby improving the efficiency of the process.

The horizontal portion 133 of the guide panel 130 presses a part of the edge of the optical sheet 121 of the backlight unit 120 to prevent the optical sheet 121 from flowing, The degree of freedom of the guide panel 130 can be further improved through the flexible nature of the optical sheet 121. [

- Third Embodiment -

5 is a cross-sectional view schematically showing a modular liquid crystal display device according to a third embodiment of the present invention.

An LED assembly 129 including a reflection plate 125, a light guide plate 123, a PCB 129b on which the LED 129a and the LED 129a are mounted, and a light guide plate 123 on the light guide plate 123, 121 are stacked to form a backlight unit 120. [

A liquid crystal panel 110 having a liquid crystal layer (not shown) interposed therebetween is disposed between the first and second substrates 112 and 114 at an upper portion of the backlight unit 120, And 114 are attached with polarizing plates 119a and 119b selectively transmitting only specific light.

The backlight unit 120 and the liquid crystal panel 110 are surrounded by the vertical portion 131 of the guide panel 130 and the cover bottom 150 is coupled to the backside thereof.

Here, the guide panel 130 according to the third embodiment of the present invention is made of a metal material having a small thickness such as aluminum (Al), stainless steel (SUS), cold rolled steel plate (HGI), and electro galvanized steel plate And the guide panel 130 includes a first vertical portion 131a forming an outermost periphery of the modular liquid crystal display device, a second vertical portion 131b hemming from the end of the first vertical portion 131a, And a horizontal portion 133 bent perpendicularly from the vertical portion 131b to the first and second vertical portions 131a and 131b.

The liquid crystal panel 110 is attached and fixed on the horizontal portion 133 with a rear edge supported by a bonding pad 160 such as a double-sided tape through a bonding pad 160. The first vertical portion 131a contacts the side surface of the liquid crystal panel 110 And the inner surface of the second vertical portion 131b is in close contact with the outer surface of the side surface 153 of the cover bottom 150 so that the backlight unit 120 includes the first and second vertical portions 131a and 131b The edge is surrounded by the double sidewall.

The guide panel 130 and the cover bottom 150 are modularized with a fastening tool capable of imparting a degree of freedom to the guide panel 130. That is, (300).

At this time, one end of the adhesive black film 300 is attached to the inner surface of the second vertical portion 131b of the guide panel 130, and the other end of the adhesive black film 300 is attached to the back surface of the cover bottom 150 Respectively.

The adhesive black film 300 is formed such that one end attached to the inner surface of the second vertical portion 131b of the guide panel 130 and the other end attached to the back surface of the cover bottom 150 do not have adhesive property, So that it is not attached to the place.

The adhesive black film 300 has a first area 310 attached to the inner surface of the second vertical part 131b, a second area 320 attached to the back surface of the cover bottom 150, And a third area 330 that is not attached anywhere between the first area 310 and the second area 310. [

Therefore, the adhesive black film 300 according to the third embodiment of the present invention has a certain elastic force by the first to third regions 310, 320, and 330.

As a result, the adhesive black film 300 has an elastic force between the guide panel 130 and the cover bottom 150, and the elastic force of the adhesive black film 300 causes the guide panel 130 to have a degree of freedom .

Accordingly, the guide panel 130 according to the third embodiment of the present invention has a certain degree of freedom in accordance with the flow in the modularized liquid crystal display device.

Even if the liquid crystal panel 110 is bent due to contraction and expansion due to the material properties of the polarizers 119a and 119b attached to both outer sides of the liquid crystal panel 110, It is possible to prevent the light leakage phenomenon of the liquid crystal panel 110 caused by the warping of the liquid crystal panel 110 by buffering the warp of the panel 110.

Here, in order to further improve the elasticity of the adhesive black film 300, the third area 330 of the adhesive black film 300 may have a round shape protruding from the back surface of the cover bottom 150, The present invention is not limited to this configuration.

At this time, the vertical portion 131 including the first and second vertical portions 131a and 131b of the guide panel 130 is formed to protrude from the back surface of the cover bottom 150, Shaped adhesive black film 300 is not visible from the side of the modular liquid crystal display device, thereby improving the appearance of the liquid crystal display device.

Therefore, the interior and design aspects of the liquid crystal display device can be improved without a separate external case. Accordingly, it is possible to provide a lightweight and thin liquid crystal display device by eliminating the external case, and also the process cost and the process time can be reduced, thereby improving the process efficiency.

The first area 310 attached to the inner surface of the second vertical part 131b of the guide panel 130 of the adhesive black film 300 completely covers the inner surface of the second vertical part 131b So that light leakage phenomenon that light is reflected on the surface of the guide panel 130 made of a metal can be prevented.

The horizontal portion 133 of the guide panel 130 presses a part of the edge of the optical sheet 121 of the backlight unit 120 to prevent the optical sheet 121 from flowing, The degree of freedom of the guide panel 130 can be further improved through the flexible nature of the optical sheet 121. [

As described above, in the liquid crystal display device according to the third embodiment of the present invention, the guide panel 130 is formed of a thin metal material with hemming treatment, and the liquid crystal panel 110 is attached to the guide panel 130 with a double- The guide panel 130 and the cover bottom 150 are modularized through the adhesive black film 300 having an elastic force to fix the guide panel 130 and the cover bottom 150 on the guide panel 130 through the adhesive pad 160, The warpage of the liquid crystal panel 110 can be buffered by the degree of freedom of the guide panel 130 even if warping occurs.

Accordingly, it is possible to prevent a problem that the image quality of the liquid crystal display device is lowered.

Therefore, it is possible to omit a separate component such as an optical sheet for preventing the light leakage of the liquid crystal panel 110, thereby realizing the light weight and thinness of the liquid crystal display device, and simplifying the process of the liquid crystal display device, .

Further, since the guide panel 130 is formed of a thin metal material, it is possible to provide a liquid crystal display device having a light weight, a thinner shape, and a narrow bezel since the guide panel 130 is superior in rigidity and thinner than conventional guide panels have.

Further, a liquid crystal display device having a lightweight, thin, and narrow bezel can be provided through elimination of the top cover (40 in FIG. 1).

The vertical portion 131 including the first and second vertical portions 131a and 131b of the guide panel 130 is formed to protrude from the back surface of the cover bottom 150, Shaped adhesive black film 300 is not visible from the side of the modular liquid crystal display device, thereby improving the appearance of the liquid crystal display device.

As a result, the lightweight and thin liquid crystal display device can be provided by eliminating the case, and the process cost and process time can be reduced, thereby improving the efficiency of the process.

The first area 310 attached to the inner surface of the second vertical part 131b of the guide panel 130 of the adhesive black film 300 completely covers the inner surface of the second vertical part 131b So that light leakage phenomenon that light is reflected on the surface of the guide panel 130 made of a metal can be prevented.

The horizontal portion 133 of the guide panel 130 presses a part of the edge of the optical sheet 121 of the backlight unit 120 to prevent the optical sheet 121 from flowing, The degree of freedom of the guide panel 130 can be further improved through the flexible nature of the optical sheet 121. [

The present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

110: liquid crystal panel (112, 114: first and second substrates)
119a and 119b:
121: optical sheet, 123: light guide plate, 125: reflector
130: guide panel 131: vertical part 131a: first vertical part 131b: second vertical part 133: horizontal part)
150: cover bottom (151: horizontal plane, 153: side)
160: Adhesive pad
170: Adhesive shading tape (171: Adhesive layer, 173: Base film)

Claims (14)

A liquid crystal panel;
A backlight unit positioned below the liquid crystal panel;
A second vertical portion which is hemmed from the end of the first vertical portion and which covers the side surface of the backlight unit, and a second vertical portion that is vertically bent from the end of the second vertical portion, the first vertical portion including a side surface of the liquid crystal panel and the backlight unit, A guide panel including a horizontal portion for supporting a rear edge of the liquid crystal panel;
A cover bottom including a horizontal plane on which the backlight unit is seated and a vertically bent side from the horizontal plane;
A fastening structure for modifying the guide panel and the cover bottom and for imparting a degree of freedom to the guide panel,
And the liquid crystal display device.
The method according to claim 1,
The fastening structure is an adhesive shielding tape,
Wherein the adhesive shielding tape covers an upper surface edge of the liquid crystal panel, an outer surface of the first vertical portion of the guide panel, and a rear edge of the cover bottom.
3. The method of claim 2,
Wherein the adhesive shielding tape comprises a base film region including an adhesive layer and a base film which supports the adhesive layer and from which the adhesive layer has been removed from a region where the second vertical portion is hemmed to a portion of a back edge of the cover bottom, Display device.
The method according to claim 1,
The fastening structure is made of a bracket made of a thin metal material,
Wherein one end of the bracket is attached to the guide panel, and the other end of the bracket is attached to the cover bottom.
5. The method of claim 4,
Wherein the bracket forms a bent portion in a region excluding one end attached to the guide panel and the other end attached to the cover bottom.
6. The method of claim 5,
Wherein the bracket includes a first piece attached to the inner surface of the second vertical portion of the guide panel, a second piece attached to a bottom surface of the cover bottom, a third piece bent perpendicularly from the first piece, And a fourth piece bent at a predetermined angle from the third piece to connect the first piece and the second piece.
5. The method of claim 4,
Wherein the bracket is attached to the guide panel and the cover bottom through an adhesive tape.
The method according to claim 1,
Wherein the fastening structure is made of an adhesive black film having an elastic force,
Wherein one end of the adhesive black film is attached to the inner surface of the second vertical portion and the other end of the adhesive black film is attached to the back surface of the cover bottom.
9. The method of claim 8,
Wherein the adhesive black film has a first region attached to the inner surface of the second vertical portion, a second region attached to the back surface of the cover bottom, and a second region formed between the first and second regions, The liquid crystal display device is divided into three regions.
10. The method of claim 9,
And the third region has a round shape protruding from the backside of the cover bottom.
9. The method of claim 8,
Wherein the adhesive black film completely adheres to the inner surface of the second vertical portion.
The method according to claim 4 or 8,
Wherein the first and second vertical portions of the guide panel protrude from the back surface of the cover bottom.
5. The method of claim 4,
Wherein the guide panel is subjected to a matte painting process or a black color film is attached.
The method according to claim 1,
And the horizontal portion presses a part of the edge of the optical sheet.

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