KR102250663B1 - Liquid crystal display device - Google Patents

Abstract

The present invention relates to a liquid crystal display device, and to a liquid crystal display device that implements a narrow bezel.
A feature of the present invention is that the liquid crystal panel is attached and supported between the first vertical portion of the guide panel and the side surface of the cover butt, so that some fluidity can be imparted to the liquid crystal panel through the fixer.
Through this, even if warpage of the modularized liquid crystal display device occurs, the warpage of the liquid crystal panel is buffered by the fluidity by the fixer, and the warpage is not transmitted to the liquid crystal panel.
Accordingly, it is possible to prevent light leakage due to the bending of the liquid crystal panel, and thus, it is possible to prevent the image quality of the liquid crystal display from deteriorating.
In addition, by not using the foam pad, it is possible to prevent the increase in process cost due to the expensive foam pad, and also, it is possible to improve the efficiency of the process by omitting the process of attaching the foam pad by the operator's manual labor. have. In addition, it is possible to implement a narrow bezel that was not possible due to the minimum width of the foam pad.

Description

Liquid crystal display device

The present invention relates to a liquid crystal display device, and to a liquid crystal display device that implements a narrow bezel.

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 has a liquid crystal panel bonded by interposing a liquid crystal layer between two parallel substrates as an essential component, and the difference in transmittance is realized by changing the arrangement 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 having 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 1 includes a liquid crystal panel 10 and a backlight unit 20, and 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 reflective plate 25.

The liquid crystal panel 10 and the backlight unit 20 include the top cover 40 surrounding the upper edge of the liquid crystal panel 10 and the backlight unit 20 while the edges are surrounded by a rectangular guide panel 30. The cover bottoms 50 covering the rear surface are coupled at the front and rear sides, respectively, and are modularized through the guide panel 30.

In addition, reference numerals 19a and 19b denote polarizing plates that are attached to both sides of the liquid crystal panel 10 to control the polarization direction of light.

Meanwhile, the liquid crystal panel 10 is attached and fixed on the guide panel 30 through a foam pad (not shown) having elasticity, and the liquid crystal panel 10 is attached to the guide panel 30 through a foam pad (not shown). ) By attaching and fixing on the liquid crystal panel 10, even if the liquid crystal display 1 is bent due to a force acting from the outside, the bending is not transmitted to the liquid crystal panel 10 due to the elastic force of the foam pad (not shown).

Through this, it is possible to prevent the occurrence of light leakage due to the bending of the liquid crystal panel 10.

However, the foam pad (not shown) having elasticity is expensive because the formation process is difficult, and the process of attaching the foam pad (not shown) on the guide panel 30 has to be carried out only through the manual operation of the operator, so the efficiency of the process is increased. It has very low problems.

In addition, at present, it is difficult to implement a narrow bezel that is recently required due to the minimum width that can form a foam pad (not shown).

The present invention is to solve the above problems, and it is a first object to provide a liquid crystal display device capable of implementing a narrow bezel while preventing the warpage from being transmitted to a liquid crystal panel.

Through this, the second object is to prevent light leakage, 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 provides a liquid crystal panel, a backlight unit positioned under the liquid crystal panel, a first vertical portion surrounding an edge of the backlight unit, and a first vertical portion bent vertically from the first vertical portion. 1 includes a horizontal portion, the first vertical portion is provided with first and second fastening holes, a guide panel provided with a third fastening hole on the first horizontal portion and a horizontal surface on which the backlight unit is mounted, and the horizontal surface A cover bottom including a side vertically bent from an edge of the side, and a fastening protrusion inserted into the first fastening hole on the outer side of the side surface, and a part of the end of the side is vertically bent outward to provide a first protrusion end And a fixer including a second horizontal portion supporting the rear edge of the liquid crystal panel, and a second vertical portion vertically bent from the second horizontal portion and inserted into the third fastening hole, and a second vertical portion A guide hole is provided in the portion, and the first protruding end penetrates through the guide hole to provide a liquid crystal display that is inserted into the second fastening hole.

In addition, the present invention includes a liquid crystal panel, a backlight unit positioned under the liquid crystal panel, a first vertical portion surrounding an edge of the backlight unit, and a first horizontal portion vertically bent from the first vertical portion, and the first 1 A first fastening hole is provided in the vertical part, a second protruding end is provided to protrude inside the first vertical part, and a guide panel having a third fastening hole and the backlight unit are mounted on the first horizontal part. And a side surface vertically bent from an edge of the horizontal surface, and a fastening protrusion inserted into the first fastening hole is provided on an outer side of the side surface, and a cover bottom and a fourth fastening hole are provided on the side surface. A fixer including a second horizontal portion supporting the rear edge of the liquid crystal panel, and a second vertical portion vertically bent from the second horizontal portion and inserted into the third fastening hole, and the second vertical portion A guide hole is provided, and the second protruding end penetrates through the guide hole to provide a liquid crystal display that is inserted into the fourth fastening hole.

In this case, a plurality of the second vertical portions are spaced apart from each other in the longitudinal direction of the second horizontal portion, the second horizontal portion is supported on the first horizontal portion, and the liquid crystal panel is provided with the second horizontal portion through an adhesive pad. It is attached and fixed on the part.

In addition, the guide hole has a width greater than a thickness of the first protruding end or the second protruding end, and a guide groove connected to the third fastening hole is provided on an inner surface of the first vertical part, and the second The vertical part is inserted into the guide groove.

In addition, the width of the guide groove corresponds to the thickness of the second vertical portion, and further includes a third vertical portion vertically bent from the second horizontal portion to one side of the second vertical portion.

In this case, the third vertical portion surrounds a portion of the outer portion of the first vertical portion of the guide panel, and a stepped portion on which the third vertical portion is seated is provided outside the first vertical portion of the guide panel.

As described above, according to the present invention, by providing a fixer for attaching and supporting a liquid crystal panel between the first vertical part of the guide panel and the side surface of the cover butt, it is possible to impart some fluidity to the liquid crystal panel through the fixer. There is an effect.

Through this, even if warpage of the modularized liquid crystal display device occurs, the warpage of the liquid crystal panel is buffered by the fluidity by the fixer, and the warpage is not transmitted to the liquid crystal panel, thereby preventing light leakage due to the warpage of the liquid crystal panel. Thus, there is an effect of preventing the image quality of the liquid crystal display from deteriorating.

In addition, by not using a foam pad, there is an effect of preventing an increase in process cost due to an expensive foam pad, and also, it is possible to omit the process of attaching the foam pad by manual labor of the operator, thereby increasing the efficiency of the process. There is an effect that can be improved. In addition, there is an effect of implementing a narrow bezel that could not be implemented by the minimum width of the foam pad.

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 an exploded perspective view schematically showing a liquid crystal display device according to a first embodiment of the present invention.
Figure 3a is a cross-sectional view taken along line AA of Figure 2 modularized.
3B is a cross-sectional view taken along line BB of FIG. 2 in a modularized manner.
4 is a schematic cross-sectional view of a part 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 part of a modularized 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 an exploded 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 100 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 behind the liquid crystal panel 110 on 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 take a closer look at each of these.

First, the liquid crystal panel 110 is a part that plays a key role in image expression of the liquid crystal display device 100, and the first and second substrates 112 and 114 are bonded to each other, and interposed therebetween. It includes a liquid crystal layer (not shown).

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

At this time, the pixel electrodes are separated into a plurality of bars and spaced apart from each other, and a common wiring is formed on the same layer parallel to the gate wiring, electrically connected to the common wiring, and alternately with a plurality of pixel electrodes separated within each pixel. It is separated from each other and a plurality of common electrodes are formed.

Here, when a plurality of pixel electrodes and a common electrode are separated from each other in each pixel, a liquid crystal panel 110 operating in the IPS mode is formed, and except for the common electrode, only the plate-shaped pixel electrodes are formed on the first substrate 112. ), this constitutes the liquid crystal panel 110 operating in any one of a TN mode, an ECB mode, and a VA mode.

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, is a color filter 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) for determining 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, first and second 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 at least one edge of the liquid crystal panel 110, the printed circuit board 117 is connected through a connection member 116 such as a flexible circuit board or a tape carrier package (TCP), It is in close contact with the side surface of the guide panel 130 or the rear surface of the cover butt 150.

In the liquid crystal panel 110, when the thin film transistor selected 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 image signal of the data line is transmitted to the corresponding pixel electrode. It 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 100 according to the present invention is provided with a backlight unit 120 that supplies light from the 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, a white or silver reflector 125, a light guide plate 123 mounted on the reflector 125, and an optical sheet 121 interposed thereon. .

The LED assembly 129 is a light source of the backlight unit 120 and is positioned on one side to face the light incident surface of the light guide plate 123, and a plurality of LEDs 129a and a plurality of LEDs 129a are mounted at a predetermined interval. It includes a PCB (129b).

The light guide plate 123 into which the light emitted from the plurality of LEDs 129a of the LED assembly 129 is incident is the light guide plate 123 while the light incident from the LED 129a travels through the light guide plate 123 by a number of total reflections. It spreads evenly over a wide area of the liquid crystal panel 110 to provide a surface light source.

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 may 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 located 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 portion 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 company.

The liquid crystal panel 110 and the backlight unit 120 are modularized through the guide panel 130 and the cover bottom 150, and the guide panel 130 supports the edge of the liquid crystal panel 110 and the backlight unit 120 In the shape of a rectangular frame to surround the edge of the backlight unit 120, the first vertical portion 131 surrounding the side surface of the backlight unit 120 and the liquid crystal panel 110 and the backlight unit 120 inside the first vertical portion 131 It includes a first horizontal portion 133 for dividing the position.

The liquid crystal panel 110 is supported on the first horizontal portion 133.

At this time, the first vertical portion 131 of the guide panel 130 is provided with a plurality of first and second fastening holes 135 and 137, and a third fastening hole 139 on the first horizontal portion 133 It is equipped with.

In addition, the guide panel 130 is mounted on the cover bottom 150, and the cover bottom 150 includes a horizontal surface 151 and a side surface 153 in which an edge of the horizontal surface 151 is vertically bent.

At this time, a fastening protrusion 155 that is inserted into the first fastening hole 135 of the guide panel 130 is provided on the outer surface of the side 153, and a part of the end of the side 153 is vertical to the outside. A bent first protrusion 157 is provided. The first protruding end 157 is inserted into the second fastening hole 137 of the guide panel 130.

The guide panel 130 and the cover bottom 150 cover the rear surface of the backlight unit 120 with the edge of the liquid crystal panel 10 and the backlight unit 120 wrapped around the guide panel 130. It is combined in the front and rear to be integrated into a module.

At this time, the guide panel 130 may be referred to as a support main or a main support, and 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 100 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 100 can be thin and light weight. It leads to simplification. In addition, it is possible to reduce the process cost.

In addition to being lightweight and thin, the display area is expanded through the omission of the top cover (40 in Fig. 1), and the bezel area, which is a non-display area other than the display area, is reduced, so that a liquid crystal display having a narrow bezel. Device 100 may be provided.

In particular, the liquid crystal display device 100 according to the first embodiment of the present invention is characterized in that it further includes a fixer 200 between the guide panel 130 and the cover bottom 150. Through this, the liquid crystal panel 110 supported on the first horizontal portion 133 of the guide panel 130 has some fluidity within the modularized liquid crystal display device 100.

Here, the fixer 200 has a rectangular frame shape corresponding to the guide panel 130, a second horizontal portion 201 seated on the first horizontal portion 133 of the guide panel 130, and a second horizontal portion. It includes a plurality of second vertical portions 203 which are vertically bent from 201 and inserted into the third fastening hole 139 of the guide panel 130, and the second vertical portion 203 includes a second horizontal portion ( A plurality of pieces are provided at regular intervals along the longitudinal direction of 201).

Among the plurality of second vertical portions 203, a second vertical portion 203 corresponding to a region in which the second fastening hole 137 of the guide panel 130 and the first protruding end 157 of the cover butt 150 are formed. ) Is provided with a guide hole 205 through which the first protruding end 157 of the cover buttom 150 passes.

The fixer 200 may be made of a metal material or may be made of a mold material, and is preferably made of a metal material in order to secure a thin width and thickness and rigidity.

In addition, a portion of the rear edge of the liquid crystal panel 110 is attached and fixed on the second horizontal portion 201 through an adhesive pad 160 such as a double-sided tape (see FIG. 3A ).

In a state in which the liquid crystal panel 110 is attached and fixed, the fixer 200 has some fluidity up and down, left and right from the modularized guide panel 130 and the cover buttock 150.

Therefore, even if a force is applied from the outside to cause a warpage of the modularized liquid crystal display 100, the liquid crystal panel 110 is buffered by the fluidity of the fixer 200, and the warpage is transmitted to the liquid crystal panel 110. It will not be.

Through this, it is possible to prevent light leakage due to the bending of the liquid crystal panel 110, and thus, the image quality of the liquid crystal display device 100 may be prevented from deteriorating.

In addition, by not using a foam pad (not shown) to prevent bending of the liquid crystal panel 110, process cost and process efficiency can be improved, and a narrower bezel can be implemented.

FIG. 3A is a cross-sectional view taken along line A-A of FIG. 2 which is modularized, and FIG. 3B is a cross-sectional view taken along line B-B of FIG. 2 which is modularized.

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

In addition, a liquid crystal panel 110 with a liquid crystal layer (not shown) interposed therebetween is located on the first and second substrates 112 and 114 on the backlight unit (120 in FIG. 2), 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 substrates 112 and 114.

Here, the backlight unit (120 in FIG. 2) and the liquid crystal panel 110 are mounted on the horizontal surface 151 of the cover bottom 150 with an edge surrounded by the guide panel 130 to be modularized.

In this case, in a part of the modularized liquid crystal display 100 of FIG. 3A, the outer surface of the side surface 153 of the cover buttum 150 and the inner surface of the first vertical portion 131 of the guide panel 130 are in close contact with each other. In a state, the fastening protrusion 155 provided on the side 153 of the cover butt 150 is inserted into the first fastening hole 135 provided in the first vertical part 131 of the guide panel 130, The guide panel 130 and the cover bottom 150 are assembled and fastened to each other.

At this time, in the liquid crystal display device 100 according to the first exemplary embodiment of the present invention, a fixer 200 is positioned between the guide panel 130 and the cover bottom 150, and the fixer 200 includes a second horizontal portion ( 201) is seated and positioned on the first horizontal portion 133 of the guide panel 130, and a part of the rear edge of the liquid crystal panel 110 on the second horizontal portion 201 of the fixer 200 It is attached and fixed through the same adhesive pad 160.

In addition, in a part of the modularized liquid crystal display device 100 as shown in FIG. 3B, the guide panel 130 has a first horizontal portion 133 of the guide panel 130 as an inner surface of the first vertical portion 131. A guide groove 138 connected from the third fastening hole 139 provided in is provided, and in the fixer 200, the second horizontal part 201 is above the first horizontal part 133 of the guide panel 130. The second vertical part 203 is inserted into the guide groove 138 of the guide panel 130 through the third fastening hole 139 while seated in the.

At this time, the width (w3) of the guide groove 138 is formed to correspond to the thickness (w2) of the second vertical portion 203 of the fixer 200, It is preferable that the second vertical portion 203 does not protrude to the inner side of the first vertical portion 131 of the guide panel 130 so that the bezel area, which is a non-display area of the liquid crystal display 100, does not widen. Do.

And, in a state in which the inner side of the second vertical portion 203 of the fixer 200 and the outer side of the side surface 153 of the cover buttum 150 are in close contact, The first protruding end 157 passes through the guide hole 205 provided in the second vertical part 203 of the fixer 200, and a second fastening provided in the first vertical part 131 of the guide panel 130 It is inserted into the hole 137.

Here, the fixer 200 may be defined by being divided into a constrained region in which the second vertical portion 203 is formed and a free region in which the second vertical portion 203 is not formed, and the second vertical portion 203 of FIG. 3A In the free region where is not formed, the liquid crystal panel 110 imparts fluidity to the top, bottom, left, and right.

That is, the liquid crystal panel 110 is only attached and supported on the second horizontal portion 201 of the fixer 200 through the adhesive pad 160, and the liquid crystal panel 110 is provided with the guide panel 130 and the cover bottom 150. ) And does not have a configuration assembled and fastened, and in addition, in the fixer 200 to which the liquid crystal panel 110 is attached and supported, the second horizontal part 201 is on the first horizontal part 133 of the guide panel 130. The fixer 200, the guide panel 130, and the cover bottom 150 do not have a configuration that is assembled and fastened to each other.

Accordingly, the liquid crystal panel 110 has free fluidity up, down, left and right from the guide panel 130 and the cover bottom 150 together with the fixer 200.

In addition, the constrained region of the fixer 200 provided with the second vertical portion 203 of FIG. 3B imparts some fluidity up and down to the liquid crystal panel 110. That is, the guide hole 205 provided on the second vertical portion 203 of the fixer 200 is the thickness d1 of the first protrusion end 157 of the cover buttock 150 penetrating the guide hole 205 Compared to, the first protrusion 157 is formed to have a large width w1 upward and downward.

Therefore, the fixer 200 is constrained by the first protrusion end 157 of the cover butt 150 on the left and right, but the first protrusion of the cover butt 150 passing through the guide hole 205 of the fixer 200 The liquid crystal panel 110 attached and fixed through the adhesive pad 160 on the second horizontal part 201 of the fixer 200 is also provided with some fluidity in the upper and lower sides with the end 157 as the center. It has some fluidity due to some fluidity to the upper and lower sides of (200).

That is, the fixer 200 according to the first embodiment of the present invention imparts fluidity up, down, left and right to the liquid crystal panel 110 through the free region of the fixer 200 of FIG. 3A, and the fixer 200 of FIG. 3B. Through the constrained area of ), only some of the upper and lower liquidity is given to the liquid crystal panel 110.

Here, the fluidity imparted to the liquid crystal panel 110 in the free region of the fixer 200 is greater than some of the fluidity imparted to the liquid crystal panel 110 in the constrained region, but the free region and the constrained region of the fixer 200 are Since it is connected and formed, the free region of the fixer 200 is partially constrained to the constrained region.

Therefore, even through the free region of the fixer 200, only some fluidity is given to the liquid crystal panel 110 in the upper, lower, left, and right directions, and some of the fluidity imparted to the liquid crystal panel 110 by the fixer 200 is the liquid crystal panel ( The liquid crystal display 110 is stably modularized to the liquid crystal display 100 and at the same time is achieved within the limit that the liquid crystal panel 110 is not bent through the force applied to the modular liquid crystal display 100.

In this way, by imparting some fluidity to the liquid crystal panel 110 through the fixer 200, even if a force is applied from the outside and the modularized liquid crystal display 100 is bent, the liquid crystal panel 110 is The warpage is buffered by the fluidity caused by the liquid crystal panel 110 so that the warpage is not transmitted to the liquid crystal panel 110.

Through this, it is possible to prevent light leakage due to the bending of the liquid crystal panel 110, and thus, the image quality of the liquid crystal display device 100 may be prevented from deteriorating.

In addition, by not using a foam pad (not shown) to prevent bending of the liquid crystal panel 110, it is possible to prevent an increase in process cost due to an expensive foam pad (not shown). Since the attaching process of the foam pad (not shown) by the operator's manual operation can be omitted, the efficiency of the process can be improved.

In addition, it is possible to implement a narrow bezel that has not been implemented due to the minimum width of the foam pad (not shown).

As described above, in the liquid crystal display device 100 according to the first embodiment of the present invention, the liquid crystal panel 110 is formed between the first vertical portion 131 of the guide panel 130 and the side surface 153 of the cover bottom 150. ), it is possible to impart some fluidity to the liquid crystal panel 110 through the fixer 200 by providing the fixer 200 to which) is attached and supported.

Through this, even if bending of the modularized liquid crystal display 100 occurs due to external force, the bending of the liquid crystal panel 110 is buffered by the fluidity of the fixer 200, so that the bending of the liquid crystal panel 110 is prevented. It will not be delivered. Accordingly, it is possible to prevent light leakage due to the bending of the liquid crystal panel 110, and thus, it is possible to prevent the image quality of the liquid crystal display 100 from deteriorating.

In addition, by not using a foam pad (not shown) to prevent bending of the liquid crystal panel 110, it is possible to prevent an increase in process cost due to an expensive foam pad (not shown). Since the attaching process of the foam pad (not shown) by the operator's manual operation can be omitted, the efficiency of the process can be improved.

In addition, it is possible to implement a narrow bezel that could not be implemented by the minimum width of the foam pad (not shown).

-Second embodiment

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

Prior to the description, FIG. 4 is an area corresponding to an area cut along line A-A of FIG. 2, and corresponds to a constrained area in which the second vertical portion 203 of the fixer 200 is formed.

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

In addition, a liquid crystal panel 110 with a liquid crystal layer (not shown) interposed therebetween is located on the first and second substrates 112 and 114 on the backlight unit (120 in FIG. 2), 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 substrates 112 and 114.

Here, the backlight unit (120 in FIG. 2) and the liquid crystal panel 110 are mounted on the horizontal surface 151 of the cover bottom 150 with an edge surrounded by the guide panel 130 to be modularized.

At this time, the guide panel 130 has a guide groove 138 connected from the third fastening hole 139 provided in the first horizontal portion 133 of the guide panel 130 to the inner surface of the first vertical portion 131 Is provided, and in the fixer 200, the second horizontal portion 201 is seated on the first horizontal portion 133 of the guide panel 130, and the second vertical portion 203 is a third fastening hole ( It is inserted into the guide groove 138 of the guide panel 130 through 139.

And, in a state in which the inner side of the second vertical portion 203 of the fixer 200 and the outer side of the side surface 153 of the cover butt 150 are in close contact, the first vertical portion 131 of the guide panel 130 The second protruding end 136 protruding toward the inner side of the fixer 200 penetrates the guide hole 205 provided in the second vertical portion 203 of the fixer 200 and is provided on the side surface 153 of the cover butt 150. It is inserted into the fourth fastening hole (159).

Here, the guide hole 205 provided on the second vertical portion 203 of the fixer 200 is the thickness d1 of the second protruding end 136 of the guide panel 130 passing through the guide hole 205 Compared to, the second protrusion 136 is formed to have a large width w1 upward and downward.

Therefore, the fixer 200 is constrained by the second protrusion end 136 of the guide panel 130 for the left and right, but the second protrusion of the guide panel 130 passing through the guide hole 205 of the fixer 200 It has some fluidity to the upper side and the lower side around the stage 136.

In addition, the liquid crystal panel 110 attached and fixed on the second horizontal portion 201 of the fixer 200 through the adhesive pad 160 also has some fluidity due to some fluidity to the upper and lower sides of the fixer 200. Will have.

Therefore, even if a force is applied from the outside to cause a warpage of the modularized liquid crystal display 100, the liquid crystal panel 110 is buffered by the fluidity of the fixer 200, and the warpage is transmitted to the liquid crystal panel 110. It will not be.

Through this, it is possible to prevent light leakage due to the bending of the liquid crystal panel 110, and thus, the image quality of the liquid crystal display device 100 may be prevented from deteriorating.

In addition, by not using a foam pad (not shown) to prevent bending of the liquid crystal panel 110, it is possible to prevent an increase in process cost due to an expensive foam pad (not shown). Since the attaching process of the foam pad (not shown) by the operator's manual operation can be omitted, the efficiency of the process can be improved.

In addition, it is possible to implement a narrow bezel that could not be implemented by the minimum width of the foam pad (not shown).

-Third embodiment-

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

Prior to the description, FIG. 5 is an area corresponding to an area cut along line B-B of FIG. 2, and corresponds to a free area in which the second vertical portion of the fixer is not formed.

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

In addition, a liquid crystal panel 110 with a liquid crystal layer (not shown) interposed therebetween is located on the first and second substrates 112 and 114 on the backlight unit (120 in FIG. 2), 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 substrates 112 and 114.

Here, the backlight unit (120 in FIG. 2) and the liquid crystal panel 110 are mounted on the horizontal surface 151 of the cover bottom 150 with an edge surrounded by the guide panel 130 to be modularized.

At this time, in a state in which the outer surface of the side surface 153 of the cover buttock 150 and the inner surface of the first vertical portion 131 of the guide panel 130 are in close contact with each other, the side surface 153 of the cover buttum 150 is The provided fastening protrusion 155 is inserted into the first fastening hole 135 provided in the first vertical portion 131 of the guide panel 130, so that the guide panel 130 and the cover bottom 150 are assembled with each other. And is fastened.

At this time, a fixer (200) is located between the guide panel 130 and the cover bottom 150, and in the fixer 200, the second horizontal portion 201 is the first horizontal portion 133 of the guide panel 130 A portion of the rear edge of the liquid crystal panel 110 is attached and fixed on the second horizontal portion 201 of the fixer 200 through an adhesive pad 160 such as a double-sided tape.

In particular, the liquid crystal display device 100 according to the third exemplary embodiment of the present invention is vertically bent from the second horizontal portion 201 in the free region of the fixer 200 to the first vertical portion 201 of the guide panel 130. A third vertical portion 207 surrounding the outer part of the unit is further provided, and the rigidity of the free region of the fixer 200 can be improved through the third vertical portion 207, thereby improving the overall rigidity of the fixer 200. Can be improved.

In addition, in the process of seating the second horizontal portion 201 of the fixer 200 on the first horizontal portion 133 of the guide panel 130, the guide panel 130 is It is possible to guide the position of the second horizontal portion 201 on the first horizontal portion 133, so that the second horizontal portion 201 of the fixer 200 is placed on the first horizontal portion 133 of the guide panel 130. It makes it easy to proceed with the assembly process to settle on

In this case, a stepped step 134 having a width corresponding to the thickness of the third vertical portion 207 of the fixer 200 is provided outside the first vertical portion 131 of the guide panel 130, The portion 207 is seated, and it is preferable to prevent it from protruding to the outside of the guide panel 130 through this.

Through this, the assembling property of the guide panel 130 and the fixer 200 can be more easily improved, and the non-display area of the liquid crystal display 100 can be improved by the third vertical portion 207 of the fixer 200. You can prevent the bezel area from becoming wider.

At this time, the third vertical portion 207 of the fixer 200 is vertically bent from the second horizontal portion 201 of the fixer 200 to provide a plurality of second vertical portions along the length direction of the second horizontal portion 201. It is located in the area between the parts (203 in FIG. 4), and the height h of the third vertical part 207 of the fixer 200 is equal to the height of the second vertical part 203 in FIG. 4 Although it may be formed correspondingly, in the process of assembling and fastening the guide panel 130 and the cover bottom 150, the third vertical portion 207 of the fixer 200 is formed in the first fastening hole 135 of the guide panel 130. It is preferable to form within the limit of improving the rigidity of the fixer 200 without blocking ).

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

100: liquid crystal display device
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: first vertical portion, 133: first horizontal portion, 137: second fastening hole, 138: guide groove, 139: third fastening hole)
150: cover buttom (151: horizontal plane, 153: side, 157: first protrusion)
160: adhesive pad
200: fixer (201: second horizontal portion, 203: second vertical portion, 205: guide hole)

Claims (11)

A liquid crystal panel;
A backlight unit positioned under the liquid crystal panel;
A first vertical portion surrounding an edge of the backlight unit, and a first horizontal portion vertically bent from the first vertical portion, wherein first and second fastening holes are provided in the first vertical portion, and the first horizontal portion A guide panel provided with a third fastening hole on the part;
A horizontal surface on which the backlight unit is mounted, and a side surface vertically bent from an edge of the horizontal surface, and a fastening protrusion inserted into the first fastening hole of the guide panel is provided on an outer side of the side surface, and a part of an end of the side surface Is bent vertically outwardly and the cover buttoum is provided with a first protruding end;
A fixer including a second horizontal portion supporting the rear edge of the liquid crystal panel, and a second vertical portion that is vertically bent from the second horizontal portion and inserted into the third fastening hole of the guide panel, and has a guide hole. )
And wherein the first protruding end of the cover butt is inserted into the second fastening hole of the guide panel through the guide hole of the fixer.
A liquid crystal panel;
A backlight unit positioned under the liquid crystal panel;
A first vertical portion surrounding an edge of the backlight unit, and a first horizontal portion vertically bent from the first vertical portion, and a first fastening hole is provided in the first vertical portion, and an inside of the first vertical portion A guide panel having a second protruding end protruding and having a third fastening hole on the first horizontal portion;
A horizontal surface on which the backlight unit is seated and a side surface vertically bent from an edge of the horizontal surface is provided, and a fastening protrusion inserted into the first fastening hole of the guide panel is provided on an outer side of the side surface, and a fourth side is on the side surface. A cover buttum having a fastening hole;
A fixer including a second horizontal portion supporting the rear edge of the liquid crystal panel, and a second vertical portion that is vertically bent from the second horizontal portion and inserted into the third fastening hole of the guide panel, and has a guide hole. )
And wherein the second protruding end of the guide panel passes through the guide hole and is inserted into the fourth fastening hole of the cover butt.
The method according to any one of claims 1 and 2, wherein
A liquid crystal display device in which a plurality of the second vertical portions of the fixer are spaced apart along a longitudinal direction of the second horizontal portion.
The method according to any one of claims 1 and 2, wherein
The second horizontal portion of the fixer is supported on the first horizontal portion of the guide panel, and the liquid crystal panel is attached and fixed on the second horizontal portion through an adhesive pad.
The method according to any one of claims 1 and 2, wherein
The guide hole of the fixer has a width greater than a thickness of the first protruding end of the cover butt or the second protruding end of the guide panel.
The method according to any one of claims 1 and 2, wherein
A guide groove connected to the third fastening hole is provided on an inner surface of the first vertical portion of the guide panel, and the second vertical portion of the fixer is inserted into the guide groove.
The method of claim 6,
The width of the guide groove corresponds to the thickness of the second vertical portion.
The method according to any one of claims 1 and 2, wherein
A liquid crystal display device further comprising a third vertical portion vertically bent from the second horizontal portion to one side of the second vertical portion of the fixer.
The method of claim 8,
The third vertical portion surrounds a portion of an outer portion of the first vertical portion of the guide panel, and a stepped portion on which the third vertical portion is mounted is disposed outside the first vertical portion of the guide panel.
The method according to any one of claims 1 and 2, wherein
The fixer is a liquid crystal display device made of a metal material.
The method according to any one of claims 1 and 2, wherein
The second vertical portion of the fixer inserted into the third fastening hole of the guide panel is positioned between the first vertical portion of the guide panel and the side surface of the cover butt.

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