KR102178198B1 - 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 capable of preventing a light leakage phenomenon due to bending of a liquid crystal panel.
A feature of the present invention is that the guide panel is formed of a thin metal material that has been hemmed, and the liquid crystal panel is fixed to the guide panel through an adhesive pad such as double-sided tape on the guide panel. By making it modular, even if the liquid crystal panel is warped, the warpage of the liquid crystal panel is buffered by the degree of freedom of the guide panel. Through this, it is possible to prevent the occurrence of light leakage of the liquid crystal panel due to bending of the liquid crystal panel.
In addition, as the guide panel is formed of a thin metal material, it is superior in rigidity and can be formed to have a thin thickness compared to the existing guide panel, thereby providing a liquid crystal display device having a light weight and a thin shape and a narrow bezel.
In addition, it is possible to provide a liquid crystal display device having a lighter weight and a thinner shape and a narrow bezel by removing the top cover.

Description

Liquid crystal display device

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 bending of a liquid crystal panel.

The liquid crystal display device (LCD), which is advantageous for displaying moving images and has a high contrast ratio, is actively used in TVs and monitors. The optical anisotropy and polarization of liquid crystals The principle of image implementation is shown.

Such a liquid crystal display device uses a liquid crystal panel bonded by interposing a liquid crystal layer between two parallel substrates as an essential component, and a difference in transmittance is realized by changing the alignment direction of liquid crystal molecules by an electric field in the liquid crystal panel. 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, and for this purpose, a backlight with a light source is disposed on the back of the liquid crystal panel.

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

As shown, a general 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 a part that plays a key role in image expression and is composed of first and second substrates 12 and 14 bonded to each other with a liquid crystal layer therebetween.

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

The backlight unit 20 is arranged along the longitudinal direction of at least one edge of the guide panel 30, a LED assembly 29 comprising a plurality of LEDs 29a and a PCB 29b on which the LEDs 29a are mounted, and a cover It includes a reflecting plate 25 seated on the bottom 50, a light guide plate 23 seated on the reflecting plate 25, and an optical sheet 21 positioned above the reflector.

The liquid crystal panel 10 and the backlight unit 20 have a top cover 40 surrounding the upper surface of the liquid crystal panel 10 and the back of the backlight unit 20 with the edges surrounded by a rectangular guide panel 30 The cover buttum 50 covering the is coupled at the front and rear sides, and is integrated through the guide panel 30 as a medium.

In addition, reference numerals 19a and 19b denote polarizing plates attached to the front and rear surfaces of the liquid crystal panel 10 to control the polarization direction of light.

On the other hand, recently, such liquid crystal display devices are increasingly being used in desktop computer monitors and wall-mounted televisions as well as portable computers, and research has been actively conducted to have a large display area and a remarkably reduced weight and volume. It is going on.

In addition, the liquid crystal display is required for 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 in addition to the light weight and thin shape.

Accordingly, by removing the top cover 40 and attaching and fixing the liquid crystal panel 10 to the guide panel 30 through an adhesive pad (not shown) such as double-sided tape, lightweight, thin and narrow bezels are implemented. Are doing.

However, contraction and expansion occur due to the material characteristics of the polarizing plates 19a and 19b attached to both sides of the liquid crystal panel 10. In such a case, in the structure of attaching and fixing the liquid crystal panel 10 on the guide panel 30 through an adhesive pad (not shown), when the polarizing plates 19a and 19b contract and expand, they contract and expand. Deformation due to cannot be buffered, resulting in warpage of the liquid crystal panel 10, thereby causing a light leakage phenomenon of the liquid crystal panel 10.

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

The present invention is to solve the above problems, and provides a liquid crystal display device capable of buffering deformation caused by contraction and expansion of a liquid crystal panel (polarizer) while implementing a light weight, thin, and narrow bezel. The purpose.

Through this, the second object is to prevent the occurrence of the light leakage phenomenon, and finally, the third object is to prevent the image quality of the liquid crystal display from deteriorating.

In order to achieve the object as described above, the present invention includes a liquid crystal panel; A backlight unit positioned under the liquid crystal panel; A first vertical portion surrounding the side surfaces of the liquid crystal panel and the backlight unit, a second vertical portion being hemmed from an end of the first vertical portion to surround the side surface of the backlight unit, and a vertically bent end of the second vertical portion A guide panel including a horizontal portion supporting a rear edge of the liquid crystal panel; A cover top including a horizontal surface on which the backlight unit is mounted and a side surface vertically bent from the horizontal surface; There is provided a liquid crystal display device including a fastening structure that modulates the guide panel and the cover bottom and provides a degree of freedom to the guide panel.

At this time, the fastening structure is an adhesive light-shielding tape, the adhesive light-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 butt, and the adhesiveness The light-shielding tape includes an adhesive layer and a base film supporting the adhesive layer, and includes a base film region from which the adhesive layer is removed from a region where the second vertical portion is hemmed to a part of the rear edge of the cover butt.

In addition, the fastening structure is made of a bracket made of a thin metal material, one end of the bracket is attached to the guide panel, the other end of the bracket is attached to the cover butt, and the bracket is one end attached to the guide panel. And an area excluding the other end attached to the cover butt forms a bent part.

In this case, 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 the bottom surface of the cover butt, a third piece vertically bent from the first piece, and the And a fourth piece bent at a predetermined angle from the third piece to connect the third piece and the second piece, and the bracket is attached to the guide panel and the cover butt 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 side of the second vertical portion, and the other end of the adhesive black film is attached to the rear surface of the cover buttum. And the adhesive black film is formed between the first region attached to the inner surface of the second vertical part, the second region attached to the rear surface of the cover butt, and the first and second regions, and has adhesive properties. It is divided into a third area that does not have.

In addition, the third region has a round shape protruding toward the rear surface of the cover buttome, 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 are formed to protrude toward the rear surface of the cover butt, and the guide panel is matte painted or a black colored film is attached thereto.

At this time, the horizontal portion presses a portion 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 that has been hemmed, and the liquid crystal panel is fixed to the guide panel through an adhesive pad such as double-sided tape, and then the guide panel and the cover bottom are adhered. By modulating the liquid crystal panel only through the light-shielding tape, even if the liquid crystal panel is bent, the bending of the liquid crystal panel is buffered by the degree of freedom of the guide panel. Through this, there is an effect of preventing the occurrence of light leakage of the liquid crystal panel due to the bending of the liquid crystal panel.

In addition, as the guide panel is formed of a thin metal material, it is superior in rigidity and can be formed to have a thin thickness compared to the existing guide panel, so that it is possible to provide a liquid crystal display device having a light weight and thin shape and a narrow bezel. have.

In addition, there is an effect of providing a liquid crystal display device having a lighter weight and a thinner shape and a narrow bezel by removing the top cover.

In addition, by forming a vertical portion of the guide panel to protrude toward the rear surface of the cover, it is possible to improve the appearance of the liquid crystal display device, thereby providing a light-weight and thin liquid crystal display device by removing the exterior case. In addition, since it is possible to reduce the process cost and the process time, the efficiency of the process can also be improved.

In addition, the horizontal part of the guide panel presses the edge of the optical sheet of the backlight unit, so that the flow of the optical sheet can be prevented. In the case of bending of the liquid crystal panel, the degree of freedom of the guide panel through the flexible nature of the optical sheet Can be further improved.

1 is a cross-sectional view of a liquid crystal display device including a general edge type backlight unit 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.
3A to 3C are cross-sectional views schematically illustrating a process of modularizing the liquid crystal display of FIG. 2.
4 is a schematic cross-sectional view of a modularized liquid crystal display device according to a second embodiment of the present invention.
5 is a schematic cross-sectional view of a modular liquid crystal display device according to a third embodiment of the present invention.

Hereinafter, embodiments of 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, the liquid crystal display device according to the first embodiment of the present invention is largely composed of a liquid crystal panel 110, a backlight unit 120, a guide panel 130, and a cover bottom 150.

At this time, if the direction on the drawing is defined for convenience of explanation, the backlight unit 120 is disposed at the rear of the liquid crystal panel 110 under the premise that the display surface of the liquid crystal panel 110 faces forward, and The cover buttoum 150 is positioned on the rear surface of the backlight unit 120 while the square-shaped guide panel 130 is wrapped around it.

Let's look at each of these in more detail.

First, the liquid crystal panel 110 is a part that plays a key role in image expression of a liquid crystal display device, and the first and second substrates 112 and 114 are bonded to each other, and a liquid crystal layer interposed therebetween. Includes (not shown).

Although not shown in the drawing, a plurality of gate lines and data lines cross each other to define pixels on the inner surface of the first substrate 112 called a lower substrate or an array substrate, and a thin film transistor at each intersection point. : TFT) is provided so that the transparent pixel electrode and the common electrode formed in each pixel are connected.

And the inner surface of the second substrate 114 called the upper substrate or the color filter substrate, as an example, corresponding to each pixel, color filters of red (R), green (G), and blue (B) colors, and these A black matrix covering each of the gate lines, data lines, and thin film transistors is provided.

In addition, at the boundary between the first and second substrates 112 and 114 and the liquid crystal layer (not shown), upper and lower alignment layers (not shown) that determine the initial molecular arrangement direction of the liquid crystal are interposed, and the first and second substrates A seal pattern (not shown) is formed along the edges of both substrates 112 and 114 to prevent leakage of the liquid crystal layer (not shown) filled between the (112 and 114).

In addition, polarizing plates 119a and 119b (refer to FIG. 3A) that selectively transmit only specific light are attached to the outer surfaces of the first and second substrates 112 and 114, respectively.

Along one edge of the liquid crystal panel 110, the printed circuit board 117 is connected via a connecting member 116 such as a flexible circuit board or a tape carrier package (TCP) to guide the module in the process of modularization. The side surface of the panel 130 or the back surface of the cover butt 150 is in close contact.

Accordingly, when the selected thin film transistor for each gate line is turned on by the on/off signal of the thin film transistor scanned and transmitted to the gate line, the liquid crystal panel 110 transmits the image signal of the data line to the corresponding pixel electrode. Is transmitted, and the arrangement direction of the liquid crystal molecules is changed by the electric field between the pixel electrode and the common electrode generated thereby, indicating a difference in transmittance.

In addition, the liquid crystal display device according to the present invention includes a backlight unit 120 that supplies light from a rear surface of the liquid crystal panel 110 so that a difference in transmittance of the liquid crystal panel 110 is expressed to the outside.

The backlight unit 120 includes an LED assembly 129 arranged along at least one edge in the longitudinal direction of the cover bottom 150, a reflector 125, a light guide plate 123 mounted on the reflector 125, and It includes 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 located on one side of the light guide plate 123 so as to face the light incident surface of the light guide plate 123, and such an LED assembly 129 includes a plurality of LEDs 129a, A plurality of LEDs (129a) includes a PCB (129b) is mounted at a predetermined interval.

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

In particular, in recent years, in order to improve luminous efficiency and luminance, a blue LED 129a including a blue LED chip having excellent luminous efficiency and luminance is used, and as a phosphor,'cerium doped yttrium aluminum garnet (YAG:Ce)', That is, a blue LED 129a made of a yellow phosphor is used.

The blue light emitted from the LED 129a passes through the phosphor and is mixed with the yellow light emitted by the phosphor, thereby implementing white light.

The light guide plate 123 into which the light emitted from the plurality of LEDs 129a is incident is evenly distributed over a wide area of the light guide plate 123 while the light incident from the LEDs 129a travels through the light guide plate 123 by several total reflections. Spread to provide 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. Here, the pattern can be configured in various ways, such as an elliptical pattern, a polygon pattern, and a hologram pattern, in order to guide the 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 reflector 125 is positioned on the rear surface of the light guide plate 123 and reflects the light that has passed through the rear surface of the light guide plate 123 toward the liquid crystal panel 110 to improve the luminance of the light.

The optical sheet 121 on the upper part of the light guide plate 123 includes a diffusion sheet and at least one light collecting sheet, and diffuses or condenses the light that has passed through the light guide plate 123 to provide a more uniform surface light source to the liquid crystal panel 110. Let's join.

The liquid crystal panel 110 and the backlight unit 120 are modularized through the guide panel 130 and the cover bottom 150, and the cover bottom 150 includes the liquid crystal panel 110 and the backlight unit 120 on which the backlight unit 120 is mounted. A horizontal plane 151 is provided to support the entire liquid crystal display and at the same time play the role of a lower frame that minimizes the occurrence of optical loss, and the edge of the horizontal plane 151 is vertically bent to close the side surface 153 of the cover Achieve.

Then, the guide panel 130 surrounding the edge of the backlight unit 120 is mounted on the cover buttoum 150.

The guide panel 130 has a rectangular frame shape for supporting the edge of the liquid crystal panel 110 and surrounding the edge of the backlight unit 120, and a vertical portion 131 surrounding the side surfaces of the liquid crystal panel 110 and the backlight unit 120 ) And a horizontal portion 133 that divides the position of the liquid crystal panel 110 and the backlight unit 120 inside the vertical portion 131.

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

The guide panel 130 seated on the cover bottom 150 is modularized with each other as a fastening tool that can give a degree of freedom to the guide panel 130, that is, the cover bottom 150 from the top edge of the liquid crystal panel 110 It is modularized with the cover buttoum 150 through an adhesive shading tape 170 (see FIG. 3C) covering the rear edge of the.

In this case, the guide panel 130 may be referred to as a support main or a main support, or a mold frame, and the cover buttom 150 may be referred to as a bottom cover or a lower cover.

Here, the liquid crystal display device of the present invention omits the top cover (40 in FIG. 1), which was located in front of the liquid crystal panel 110, so that the liquid crystal display device can be thin and light, and the process is simplified. In addition, process cost can be reduced.

In addition, 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, the bezel area, which is a non-display area other than the display area, has 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 thin thickness such as aluminum (Al), sus (SUS), cold-rolled steel sheet (HGI), and electro-galvanized steel sheet (EGI). It guides the side surface of the liquid crystal panel 110 and the side surface of the backlight unit 120, and is hemmed from the end of the first vertical portion 131a and the first vertical portion 131a to form an outer surface. It consists of a second vertical portion (131b) guiding the side of the unit 120, the end of the second vertical portion (131b) is bent vertically to the first and second vertical portions (131a, 131b) to the horizontal portion ( 133).

Here, hemming is a process in which the ends of a plate are folded and stacked. This process increases the stiffness of the product, makes the appearance stand out, and can also remove sharp surfaces.

Accordingly, the vertical portion 131 of the guide panel 130 is configured such that a region guiding the side surface of the backlight unit 120 through a hemming process has double sidewalls, so that the rigidity of the guide panel 130 is improved.

The guide panel 130 has an effect of superior rigidity compared to the existing guide panel formed of a mold material, and has a very thin thickness. Through this, it is possible to provide a liquid crystal display device having a light weight and thin shape and a narrow bezel.

In particular, the guide panel 130 according to the first embodiment of the present invention is only modularized with the cover bottom 150 through the adhesive shielding tape 170 (see FIG. 3C), and the guide panel 130 and the cover bottom 150 There is no separate fastening structure between ), and through this, the guide panel 130 has a certain degree of freedom according to the flow in the modular liquid crystal display.

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

Through this, it is possible to prevent the occurrence of a light leakage phenomenon of the liquid crystal panel 110 caused by bending of the liquid crystal panel 110.

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 hemmed thin metal material, and the liquid crystal panel 110 is attached to the guide panel 130, such as double-sided tape. After fixing to the guide panel 130 through the adhesive pad 160 (see FIG. 3A), the guide panel 130 and the cover buttum 150 are modularized only through the adhesive shielding tape 170 (see FIG. 3C). Even if the panel 110 is bent, the bending of the liquid crystal panel 110 may be buffered by the degree of freedom of the guide panel 130.

Through this, it is possible to prevent the occurrence of a light leakage phenomenon of the liquid crystal panel 110 due to bending of the liquid crystal panel 110.

In addition, as the guide panel 130 is formed of a thin metal material, it is superior in rigidity and can be formed to have a thin thickness compared to the existing guide panel, thereby providing a liquid crystal display device having a light weight and thin shape and a narrow bezel. have.

In addition, it is possible to provide a liquid crystal display device having a lighter weight, thinner shape, and a narrow bezel by removing the top cover (40 in FIG. 1).

3A to 3C are cross-sectional views schematically illustrating a process of modularizing the liquid crystal display of FIG. 2.

As shown in FIG. 3A, an LED assembly comprising a reflector 125, a light guide plate 123, and a PCB (129b in FIG. 2) on which an LED (129a in FIG. 2) and an LED (129a in FIG. 2) are mounted ( Optical sheets 121 are stacked on top of 129 of FIG. 2 and light guide plate 123 to form a backlight unit (120 of FIG. 2 ).

Such a backlight unit (120 in FIG. 2) is mounted on the horizontal surface 151 of the cover buttom 150.

In addition, the first and second substrates 112 and 114 and the liquid crystal panel 110 having a liquid crystal layer (not shown) interposed therebetween are adhered to the horizontal portion 133 of the guide panel 130 such as double-sided tape. It is attached and fixed through the pad 160.

At this time, polarizing plates 119a and 119b that selectively transmit only specific light are attached to the outer surfaces of the first and second substrates 112 and 114 of the liquid crystal panel 110, and the side surfaces of the liquid crystal panel 110 are guide panels. Guided by the first vertical portion (131a) of (130).

Next, as shown in FIG. 3B, the liquid crystal panel 110 attached and fixed on the horizontal portion 133 of the guide panel 130 is mounted on the cover buttome 150 (120 in FIG. 2 ). It is positioned above the guide panel 130 so that the cover buttum 150 is coupled to the rear surface of the guide panel 130.

Here, 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 part 131b that is hemmed from the end of the first vertical part 131a of the guide panel 130, The double sidewall formed of the first and second vertical portions 131a and 131b of 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 presses a part of the edge of the optical sheet 121 of the backlight unit (120 in FIG. 2), so that the flow of the optical sheet 121 can be prevented. When the panel 110 is bent, the degree of freedom of the guide panel 130 may be further improved through the flexible nature of the optical sheet 121.

Next, as shown in FIG. 3C, the guide panel 130 and the cover bottom 150 are integrally modularized with each other through an adhesive shielding tape 170, and the adhesive shielding tape 170 is a liquid crystal panel 110. It is attached to cover the outer surface of the first vertical portion 131a of the guide panel 130 and the rear edge of the cover buttoum 150 from the upper surface edge of the guide panel 130.

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

Here, in the modular liquid crystal display according to the first embodiment of the present invention, the guide panel 130 is formed of a hemmed thin metal material, and the liquid crystal panel 110 is adhered to the guide panel 130 such as double-sided tape. After fixing to the guide panel 130 through the pad 160, the guide panel 130 and the cover bottom 150 are modularized only through the adhesive shielding tape 170, so that even if the liquid crystal panel 110 is bent, The bending of the liquid crystal panel 110 may be buffered by the degree of freedom of the guide panel 130.

Through this, it is possible to prevent the occurrence of a light leakage phenomenon of the liquid crystal panel 110 due to bending of the liquid crystal panel 110.

In addition, as the guide panel 130 is formed of a thin metal material, it is superior in rigidity and can be formed to have a thin thickness compared to the existing guide panel, thereby providing a liquid crystal display device having a light weight and thin shape and a narrow bezel. have.

On the other hand, the adhesive shielding tape 170 according to the first embodiment of the present invention includes an upper surface edge of the liquid crystal panel 110, an outer surface of the first vertical portion 131a of the guide panel 130, and the cover bottom 150 It consists of an adhesive layer 171 adhered to the rear edge of the black color base film 173 supporting the adhesive layer 171, wherein the adhesive shielding tape 170 is the base film 173 from which the adhesive layer 171 is removed. ), it is characterized in that the region is formed.

That is, the adhesive shading tape 170 is an adhesive layer from the end of the first vertical portion 131a of the guide panel 130 to the area where the second vertical portion 131b is hemmed to a part of the rear edge of the cover butt 150 The base film region A from which 171 has been removed is included, and through this, the degree of freedom according to the flow of the guide panel 130 is further improved.

Through this, when the liquid crystal panel 110 is bent due to contraction and expansion due to the material characteristics of the polarizing plates 119a and 119b attached to both sides of the liquid crystal panel 110, the bending of the liquid crystal panel 110 is prevented by the guide panel ( Since it can be buffered through the degree of freedom of 130), the light leakage phenomenon of the liquid crystal panel 110 can be prevented.

Through this, it is possible to prevent a problem in that the image quality of the liquid crystal display device is deteriorated.

Therefore, it is possible to omit a separate component such as an optical sheet to prevent light leakage of the liquid crystal panel 110, thereby implementing the light weight and thinness of the liquid crystal display device, and simplification of the liquid crystal display device process and process cost You can also save.

In addition, as the guide panel 130 is formed of a thin metal material, it is superior in rigidity and can be formed to have a thin thickness compared to the existing guide panel, thereby providing a liquid crystal display device having a light weight and thin shape and a narrow bezel. have.

In addition, it is possible to provide a liquid crystal display device having a lighter weight, thinner shape, and a narrow bezel by removing the top cover (40 in FIG. 1).

-Second embodiment-

4 is a schematic cross-sectional view of a modularized liquid crystal display device according to a second embodiment of the present invention.

As shown, an optical sheet on the top of the reflective plate 125, the light guide plate 123, the LED assembly 129 comprising the PCB 129b on which the LED 129a and the LED 129a are mounted, and the light guide plate 123 121 are stacked to form the backlight unit 120.

Further, a liquid crystal panel 110 with a liquid crystal layer (not shown) interposed therebetween is located above the first and second substrates 112 and 114 and the first and second substrates 112 and 114. Polarizing plates 119a and 119b that selectively transmit only specific light are attached to the outer surfaces of each of the elements 114.

The backlight unit 120 and the liquid crystal panel 110 are edged around by the vertical portion 131 of the guide panel 130, and the cover butt 150 is coupled to the rear surface thereof.

Here, the guide panel 130 according to the second embodiment of the present invention is made of a metal material having a thin thickness such as aluminum (Al), suspension (SUS), cold-rolled steel plate (HGI), and electro-galvanized steel plate (EGI). The guide panel 130 includes a first vertical portion 131a forming the outermost part of the modularized liquid crystal display, a second vertical portion 131b that is hemmed from the end of the first vertical portion 131a, and a second It consists of a horizontal portion 133 bent perpendicularly to the first and second vertical portions 131a and 131b from the vertical portion 131b.

The liquid crystal panel 110 is attached and fixed by supporting the rear edge of the liquid crystal panel 110 on the horizontal part 133 through an adhesive pad 160 such as double-sided tape, and the first vertical part 131a is a side surface of the liquid crystal panel 110. The second vertical portion 131b has an inner surface in close contact with the outer surface of the side surface 153 of the cover bottom 150, so that the backlight unit 120 is formed of first and second vertical portions 131a and 131b. The edges are surrounded by double side walls.

The guide panel 130 and the cover bottom 150 are modularized with each other as a fastening tool that can give a degree of freedom to the guide panel 130, that is, a part of the rear surface of the cover bottom 150 and the vertical side of the guide panel 130 A part of the part 131 and a bracket 200 attached through an adhesive tape 180 such as a double-sided tape are integrally modularized with each other.

The bracket 200 is made of a thin metal material. As only a portion of the guide panel 130 and the cover bottom 150 are attached to the bracket 200, the bracket 200 serves as a leaf spring.

That is, one end of the bracket 200 is attached through a part of the guide panel 130 and the adhesive tape 180, and the other end of the bracket 200 is a part of the rear surface of the cover buttum 150 and the adhesive tape 180 ) Through.

Through this, the bracket 200 has a certain degree of freedom according to the flow between the guide panel 130 and the cover bottom 150, and the degree of freedom of the bracket 200 is also constant according to the flow in the guide panel 130 It gives you a degree of freedom.

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

Through this, even if the liquid crystal panel 110 is warped due to contraction and expansion due to the material characteristics of the polarizing plates 119a and 119b attached to both outer surfaces of the liquid crystal panel 110, the liquid crystal due to the degree of freedom of the guide panel 130 Since the bending of the panel 110 is buffered, the light leakage phenomenon of the liquid crystal panel 110 caused by the bending of the liquid crystal panel 110 can be prevented from occurring.

Here, in order to further improve the degree of freedom of the bracket 200, it is preferable to form the bracket 200 to have a bent portion (B), the bracket 200 is the second vertical portion (131b) of the guide panel 130 The first piece 210 attached through the inner side of the adhesive tape 180, the back side of the cover buttom 150 and the second piece 220 attached through the adhesive tape 180, and the first piece The third piece 230 and the third piece 230 and the second piece 230 bent vertically from the first piece 210 so as to have a plurality of bent portions B between the 210 and the second piece 220 ( It is preferable to make the fourth piece 240 bent at a certain angle from the third piece 230 so as to connect 220).

At this time, the vertical portion 131 formed of the first and second vertical portions 131a and 131b of the guide panel 130 is formed to protrude toward the rear surface of the cover bottom 150, and is positioned on the rear surface of the cover bottom 150 By preventing the bracket 200 from being visible from the side of the modularized liquid crystal display, the appearance of the liquid crystal display can be improved.

Therefore, it is possible to improve the interior and design aspects of the liquid crystal display without a separate external case. Through this, it is possible to provide a light-weight and thin liquid crystal display device by removing the external case, and it is possible to reduce process cost and process time, thereby improving process efficiency.

Meanwhile, in the liquid crystal display according to the second embodiment of the present invention, a light leakage phenomenon in which light is reflected from the surface of the guide panel 130 may occur by the guide panel 130 made of a metal material. It is preferable to perform a matte coating treatment on the guide panel 130 made of a material, or to attach a black colored film.

In addition, the horizontal portion 133 of the guide panel 130 may press a part of the edge of the optical sheet 121 of the backlight unit 120 to prevent the flow of the optical sheet 121, and the liquid crystal panel ( When bending of 110) occurs, the degree of freedom of the guide panel 130 may be further improved through the flexible nature of the optical sheet 121.

As described above, in the liquid crystal display according to the second embodiment of the present invention, the guide panel 130 is formed of a hemmed thin metal material, and the liquid crystal panel 110 is attached to the guide panel 130, such as double-sided tape. After fixing through the adhesive pad 160, the guide panel 130 and the cover bottom 150 are modularized through the bracket 200 having a large degree of freedom, so that even if the liquid crystal panel 110 is bent, the guide panel 130 The bending of the liquid crystal panel 110 can be buffered by the degree of freedom of.

Through this, it is possible to prevent a problem in that the image quality of the liquid crystal display device is deteriorated.

Therefore, it is possible to omit a separate component such as an optical sheet to prevent light leakage of the liquid crystal panel 110, thereby implementing the light weight and thinness of the liquid crystal display device, and simplification of the liquid crystal display device process and process cost You can also save.

In addition, as the guide panel 130 is formed of a thin metal material, it is superior in rigidity and can be formed to have a thin thickness compared to the existing guide panel, thereby providing a liquid crystal display device having a light weight and thin shape and a narrow bezel. have.

In addition, it is possible to provide a liquid crystal display device having a lighter weight, thinner shape, and a narrow bezel by removing the top cover (40 in FIG. 1).

In addition, the vertical portion 131 formed of the first and second vertical portions 131a and 131b of the guide panel 130 is formed to protrude toward the rear surface of the cover buttum 150, and is positioned on the rear surface of the cover buttum 150 By preventing the bracket 200 from being visible from the side of the modularized liquid crystal display, the appearance of the liquid crystal display can be improved.

Through this, it is possible to provide a light-weight and thin liquid crystal display device by removing the external case, and also improve process efficiency by reducing process cost and process time.

In addition, the horizontal portion 133 of the guide panel 130 may press a part of the edge of the optical sheet 121 of the backlight unit 120 to prevent the flow of the optical sheet 121, and the liquid crystal panel ( When the bending of 110) occurs, the degree of freedom of the guide panel 130 may be further improved through the flexible nature of the optical sheet 121.

-Third embodiment-

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

As shown, an optical sheet on the top of the reflective plate 125, the light guide plate 123, the LED assembly 129 comprising the PCB 129b on which the LED 129a and the LED 129a are mounted, and the light guide plate 123 121 are stacked to form the backlight unit 120.

Further, a liquid crystal panel 110 with a liquid crystal layer (not shown) interposed therebetween is located above the first and second substrates 112 and 114 and the first and second substrates 112 and 114. Polarizing plates 119a and 119b that selectively transmit only specific light are attached to the outer surfaces of each of the, 114).

The backlight unit 120 and the liquid crystal panel 110 are edged around by the vertical portion 131 of the guide panel 130, and the cover butt 150 is coupled to the rear surface thereof.

Here, the guide panel 130 according to the third embodiment of the present invention is made of a metal material having a thin thickness such as aluminum (Al), suspension (SUS), cold-rolled steel plate (HGI), and electro-galvanized steel plate (EGI). The guide panel 130 includes a first vertical portion 131a forming the outermost part of the modularized liquid crystal display, a second vertical portion 131b that is hemmed from the end of the first vertical portion 131a, and a second It consists of a horizontal portion 133 bent perpendicularly to the first and second vertical portions 131a and 131b from the vertical portion 131b.

The liquid crystal panel 110 is attached and fixed by supporting the rear edge of the liquid crystal panel 110 on the horizontal part 133 through an adhesive pad 160 such as double-sided tape, and the first vertical part 131a is a side surface of the liquid crystal panel 110. The second vertical portion 131b has an inner surface in close contact with the outer surface of the side surface 153 of the cover bottom 150, so that the backlight unit 120 is formed of first and second vertical portions 131a and 131b. The edges are surrounded by double side walls.

The guide panel 130 and the cover bottom 150 are modularized with each other as a fastening tool that can give a degree of freedom to the guide panel 130, that is, the guide panel 130 and the cover bottom 150 are an adhesive black film. It is modularized integrally with each other through 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 rear surface of the cover buttom 150. Attached.

The adhesive black film 300 has no adhesiveness except for 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 rear surface of the cover buttoum 150. It is formed so that it does not adhere to any place.

Through this, the adhesive black film 300 includes a first region 310 attached to the inner surface of the second vertical portion 131b, a second region 320 attached to the rear surface of the cover buttoum 150, and a second region. It can be divided into a third area 330 that is not attached anywhere between the first and second areas 310 and 320 and can be divided.

Accordingly, 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.

Through this, 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 is the degree of freedom according to the flow to the guide panel 130. Is given to a certain degree.

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

Through this, even if the liquid crystal panel 110 is warped due to contraction and expansion due to the material characteristics of the polarizing plates 119a and 119b attached to both outer surfaces of the liquid crystal panel 110, the liquid crystal due to the degree of freedom of the guide panel 130 Since the bending of the panel 110 is buffered, it is possible to prevent the occurrence of a light leakage phenomenon of the liquid crystal panel 110 caused by the bending of the liquid crystal panel 110.

Here, in order to further improve the elasticity of the adhesive black film 300, the third region 330 of the adhesive black film 300 may have a round shape protruding to the rear surface of the cover buttum 150. It is not limited to the configuration.

At this time, the vertical portion 131 formed of the first and second vertical portions 131a and 131b of the guide panel 130 is formed to protrude toward the rear surface of the cover buttum 150 and protrude toward the rear surface of the cover buttum 150 Since the round-shaped adhesive black film 300 is not visible from the side of the modularized liquid crystal display, the appearance of the liquid crystal display can be improved.

Therefore, it is possible to improve the interior and design aspects of the liquid crystal display without a separate external case. Through this, it is possible to provide a light-weight and thin liquid crystal display device by removing the external case, and it is possible to reduce process cost and process time, thereby improving process efficiency.

In addition, while the first region 310 attached to the inner surface of the second vertical portion 131b of the guide panel 130 of the adhesive black film 300 completely surrounds the inner surface of the second vertical portion 131b By being attached, it is possible to prevent the occurrence of a light leakage phenomenon in which light is reflected from the surface of the guide panel 130 made of a metal material.

In addition, the horizontal portion 133 of the guide panel 130 may press a part of the edge of the optical sheet 121 of the backlight unit 120 to prevent the flow of the optical sheet 121, and the liquid crystal panel ( When bending of 110) occurs, the degree of freedom of the guide panel 130 may be further improved through the flexible nature of the optical sheet 121.

As described above, in the liquid crystal display according to the third embodiment of the present invention, the guide panel 130 is formed of a hemmed thin metal material, and the liquid crystal panel 110 is attached to the guide panel 130, such as double-sided tape. After fixing to the guide panel 130 through the adhesive pad 160, the guide panel 130 and the cover bottom 150 are modularized through the adhesive black film 300 having elasticity, so that the liquid crystal panel 110 is Even if bending occurs, the bending of the liquid crystal panel 110 can be buffered by the degree of freedom of the guide panel 130.

Through this, it is possible to prevent a problem in that the image quality of the liquid crystal display device is deteriorated.

Therefore, it is possible to omit a separate component such as an optical sheet to prevent light leakage of the liquid crystal panel 110, thereby implementing the light weight and thinness of the liquid crystal display device, and simplification of the liquid crystal display device process and process cost You can also save.

In addition, as the guide panel 130 is formed of a thin metal material, it is superior in rigidity and can be formed to have a thin thickness compared to the existing guide panel, thereby providing a liquid crystal display device having a light weight and thin shape and a narrow bezel. have.

In addition, it is possible to provide a liquid crystal display device having a lighter weight, thinner shape, and a narrow bezel by removing the top cover (40 in FIG. 1).

In addition, the vertical portion 131 formed of the first and second vertical portions 131a and 131b of the guide panel 130 is formed to protrude toward the rear surface of the cover buttum 150, and protrudes to the rear surface of the cover buttum 150. Since the round-shaped adhesive black film 300 is not visible from the side of the modularized liquid crystal display, the appearance of the liquid crystal display can be improved.

Through this, it is possible to provide a light-weight and thin liquid crystal display device by removing the external case, and also improve process efficiency by reducing process cost and process time.

In addition, while the first region 310 attached to the inner surface of the second vertical portion 131b of the guide panel 130 of the adhesive black film 300 completely surrounds the inner surface of the second vertical portion 131b By being attached, it is possible to prevent the occurrence of a light leakage phenomenon in which light is reflected from the surface of the guide panel 130 made of a metal material.

In addition, the horizontal portion 133 of the guide panel 130 may press a part of the edge of the optical sheet 121 of the backlight unit 120 to prevent the flow of the optical sheet 121, and the liquid crystal panel ( When bending of 110) occurs, the degree of freedom of the guide panel 130 may be further improved through the flexible nature of the optical sheet 121.

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

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

Claims (15)

A liquid crystal panel;
A backlight unit positioned under the liquid crystal panel;
A first vertical portion surrounding the side surfaces of the liquid crystal panel and the backlight unit, a second vertical portion being hemmed from an end of the first vertical portion to surround the side surface of the backlight unit, and a vertically bent end of the second vertical portion A guide panel including a horizontal portion supporting the rear edge of the liquid crystal panel and made of a metal material;
A cover top including a horizontal surface on which the backlight unit is mounted and a side surface vertically bent from the horizontal surface;
A fastening structure that modulates the guide panel and the cover thrust, and provides a degree of freedom to the guide panel from the cover thrust.
Including,
The first and second vertical portions are positioned outside the side surfaces, and an inner surface of the second vertical portion is in contact with an outer surface of the side surface.
The method of claim 1,
The fastening structure is an adhesive shading tape,
The adhesive shielding tape covers an upper surface edge of the liquid crystal panel, an outer surface of the first vertical part of the guide panel, and a rear edge of the cover buttum.
The method of claim 2,
The adhesive shading tape includes an adhesive layer and a base film supporting the adhesive layer, and a liquid crystal including a base film region from which the adhesive layer has been removed from a region where the second vertical portion is hemmed to a part of the rear edge of the cover butt Display device.
The method of claim 1,
The fastening structure is made of a bracket made of a thin metal material,
One end of the bracket is attached to the guide panel, and the other end of the bracket is attached to the cover butt.
The method of claim 4,
The bracket includes a bent portion excluding one end attached to the guide panel and the other end attached to the cover butt, and the bent portion does not contact the guide panel and the cover butt.
The method of claim 5,
The bracket includes a first piece attached to the inner side of the second vertical part of the guide panel, a second piece attached to the bottom surface of the cover butt, a third piece vertically bent from the first piece, and the second piece. A liquid crystal display device comprising a fourth piece bent at a predetermined angle from the third piece to connect the third piece and the second piece.
The method of claim 4,
The bracket is attached to the guide panel and the cover bottom through an adhesive tape.
The method of claim 1,
The fastening structure is made of an adhesive black film having elasticity,
One end of the adhesive black film is attached to an inner surface of the second vertical portion, and the other end of the adhesive black film is attached to a rear surface of the cover buttum.
The method of claim 8,
The adhesive black film is formed between the first region attached to the inner surface of the second vertical portion, the second region attached to the rear surface of the cover butt, and the first and second regions and does not have adhesiveness. A liquid crystal display device divided into three areas.
The method of claim 9,
The third area is a liquid crystal display device having a round shape protruding from a rear surface of the cover bottom.
The method of claim 8,
The adhesive black film is attached while completely enclosing the inner surface of the second vertical portion.
The method according to claim 4 or 8,
The first and second vertical portions of the guide panel are formed to protrude from the rear surface of the cover buttum.
The method of claim 4,
The guide panel is a liquid crystal display to which a matte coating process or a black color film is attached.
The liquid crystal display of claim 1, wherein the horizontal portion has an upper surface in contact with a portion of a rear edge of the liquid crystal panel, and the horizontal portion has a lower surface in contact with a portion of an edge of an optical sheet of the backlight unit.
The method of claim 9,
The first area is located between an inner surface of the second vertical portion and a side surface of the cover butt, and is not adhered to the side surface of the cover buttum.

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