KR101856094B1 - Liquid crystal display - Google Patents

Abstract

The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device in which an arrangement structure of an outermost dam (Dam) formed at an outermost portion of a non-display area is changed. To this end, a liquid crystal display device according to the present invention includes: a thin film transistor substrate including a display region including pixel regions and a non-display region formed outside the display region; A color filter substrate on which color filters corresponding to the pixel regions are formed; A liquid crystal layer formed between the thin film transistor substrate and the color filter substrate; A seal formed at the outermost portion of the non-display region to seal the liquid crystal layer by attaching the color filter substrate and the thin film transistor substrate together; A boundary dam formed at a portion of the color filter substrate corresponding to a boundary between the non-display region and the display region and blocking the flow of the liquid crystal filled in the liquid crystal layer; And an outermost dam formed in a zigzag shape inside the seal at the outermost part of the non-display area of the color filter substrate to block the flow of the liquid crystal.

Description

[0001] LIQUID CRYSTAL DISPLAY [0002]

The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device capable of improving light leakage.

2. Description of the Related Art Flat panel displays that have been developed in various forms recently include a liquid crystal display device, a plasma display panel, a field emission display device, a light emitting display device Device, and the like. Particularly, the liquid crystal display device is in the spotlight due to the advantages of mass production technology, ease of driving means, and realization of high image quality.

FIG. 1 is a plan view of a conventional liquid crystal display device, and FIG. 2 is a cross-sectional view taken along the line A-A 'in the plan view of FIG.

1 and 2, the conventional liquid crystal display device can be divided into a display area C in which an image is output and a non-display area D in which no image is output, In order to prevent the thin film transistor substrate 12 and the color filter substrate 11 from being spaced apart from each other at a predetermined interval or to prevent the thin film transistor substrate and the color filter substrate from being bent, a plurality of column spacers (15, 16) are formed.

The conventional liquid crystal display device has a seal 13 formed at the outermost part of the non-display area to seal the liquid crystal layer of the liquid crystal display from the outside, and a seal 13 formed between the display area and the non- And dam (14a, 14b) for reducing the flow of the fluid.

The dams 14a and 14b formed in such a non-display area are generally formed to secure margins of the liquid crystal or to prevent gap unevenness. The dams 14a and 14b are formed on the boundary between the non-display area and the display area, Two or three are formed linearly in the outermost part of the adjacent non-display area.

The column spacers 15 and the dams 14a and 14b formed in the non-display area C as described above are both based on the pressed column spacers, ㎛ or more.

On the other hand, when external force is exerted on the conventional liquid crystal display device, there is a problem that the liquid crystal display device may be difficult to withstand external forces.

Such an influence is particularly large in the non-display area as the liquid crystal display becomes slimmer and its shape changes to the borderless type.

That is, in recent years, along with the research and development of the technical aspects of liquid crystal display devices, the need for research and development has been particularly emphasized in terms of the design of products that can appeal to consumers, thereby minimizing the thickness of the liquid crystal display device (Slim), various types of borderless type liquid crystal display devices having no step on the plane of the liquid crystal display device have been developed.

Such a borderless type is obtained by attaching the bottom surface of the outer periphery (non-display area) of the liquid crystal display device to a case of a panel guide or the like using an adhesive or an adhesive tape 50 or the like, It is not visible.

However, as described above, an adhesive, an adhesive tape, or the like is attached to the bottom surface of the non-display area forming the outer frame of the liquid crystal display device. Since the non-display area covers the panel guide or the like, .

Accordingly, a phenomenon that the non-display area is warped or deformed may occur, and therefore, problems such as light leakage may occur in the entire liquid crystal display device.

That is, in the conventional liquid crystal display device applied to the borderless type, the non-display area is attached to the panel guide using an adhesive or an adhesive tape. In this case, the non- , Warping, or deformation may occur. As a result, defects of light leakage that leak light through the non-display area may occur.

On the other hand, the dam 14a formed at the outermost part of the non-display area is greatly affected by the above-described deformation, and thus it is attracting attention as a cause of the above-mentioned light beam defects.

Since the conventional dam has one or two outermost portions of the non-display region formed in a linear shape as described above, it is weak against external force, and since the volume thereof is small, the volume of the liquid crystal fluctuated by the external force is reduced It has a problem that it can not.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is a technical object to provide a liquid crystal display device in which an arrangement structure of an outermost dam formed at an outermost portion of a non-display region is changed.

According to an aspect of the present invention, there is provided a liquid crystal display comprising: a thin film transistor substrate including a display region including pixel regions and a non-display region formed outside the display region; A color filter substrate on which color filters corresponding to the pixel regions are formed; A liquid crystal layer formed between the thin film transistor substrate and the color filter substrate; A seal formed at the outermost portion of the non-display region to seal the liquid crystal layer by attaching the color filter substrate and the thin film transistor substrate together; A boundary dam formed at a portion of the color filter substrate corresponding to a boundary between the non-display region and the display region and blocking the flow of the liquid crystal filled in the liquid crystal layer; And an outermost dam formed in a zigzag shape inside the seal at the outermost part of the non-display area of the color filter substrate to block the flow of the liquid crystal.

According to another aspect of the present invention, there is provided a liquid crystal display comprising: a thin film transistor substrate including a display region including pixel regions and a non-display region formed outside the display region; A color filter substrate on which color filters corresponding to the pixel regions are formed; A liquid crystal layer formed between the thin film transistor substrate and the color filter substrate; A seal formed at the outermost portion of the non-display region to seal the liquid crystal layer by attaching the color filter substrate and the thin film transistor substrate together; A boundary dam formed at a portion of the color filter substrate corresponding to a boundary between the non-display region and the display region and blocking the flow of the liquid crystal filled in the liquid crystal layer; And an outermost dam formed in a linear shape inside the seal at an outermost part of the non-display area of the color filter substrate to block the flow of the liquid crystal, wherein the outermost dam Layer is formed.

According to the above-mentioned solution, the present invention provides the following effects.

In the present invention, when the liquid crystal display device is attached to the panel guide portion with an adhesive or an adhesive tape by changing the arrangement structure of the dam formed at the outermost portion of the non-display region, It is possible to reduce the defects of the light beams generated in the regions.

That is, in the present invention, since the outermost dam formed at the outermost portion of the non-display region is formed in a zigzag shape or a plurality of straight lines, deformation due to an external force can be reduced.

Further, in the present invention, since the outermost dam formed at the outermost portion of the non-display region is formed in a zigzag shape or a plurality of straight lines, the volume of the outermost dam can be increased Therefore, it is possible to reduce the volume of the liquid crystal injected into the liquid crystal display device.

1 is a plan view of a conventional liquid crystal display.
FIG. 2 is a cross-sectional view of a portion taken along the line A-A 'in the plan view shown in FIG. 1; FIG.
3 is a plan view of a liquid crystal display device according to a first embodiment of the present invention.
4 is a cross-sectional view of a portion cut in the FF 'direction in the plan view shown in FIG. 3;
5 is a plan view of a liquid crystal display device according to a second embodiment of the present invention.
6 is a cross-sectional view of a portion taken along the line GG 'in the plan view of FIG. 5;
7 is a cross-sectional view showing a state in which a liquid crystal display device according to the present invention is attached to a panel guide;

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

FIG. 3 is a plan view of a liquid crystal display device according to a first embodiment of the present invention, and shows only a partial plan view of the entire liquid crystal display device. 4 is a cross-sectional view of a portion taken along the line F-F 'in the plan view shown in Fig.

The present invention can be applied to an adhesive or an adhesive tape 500 by changing the shape of an outermost dam (hereinafter, simply referred to as an outermost dam) 141 formed at the outermost portion of a non- And the adhesion light generated in the non-display area to which the light is incident is improved.

3 and 4, the liquid crystal display according to the first embodiment of the present invention includes a display region D including pixel regions formed by intersection of gate lines and data lines, A color filter substrate 110 on which color filters corresponding to pixel regions are formed, a thin film transistor substrate 120 formed between the thin film transistor substrate and the color filter substrate, A first column spacer 160 connected between the thin film transistor substrate and the color filter substrate to separate the thin film transistor substrate and the color filter substrate from each other at a predetermined interval in the display region, A second column spacer 150 arranged in a triangular shape at a portion corresponding to the region, a second column spacer 150 formed at the outermost portion of the non-display region and having a color filter substrate and a thin- A seal 130 for sealing the liquid crystal layer, a boundary dam 142 formed in a portion of the color filter substrate corresponding to the boundary between the non-display area and the display area to block the flow of the liquid crystal, And an outermost dam 141 formed at the outermost portion of the seal to block the flow of the liquid crystal.

First, in the thin film transistor substrate 120, a gate line and a data line are arranged so as to cross each other vertically to define a pixel region, a thin film transistor (TFT) is formed at a portion where each gate line and a data line cross each other, A pixel electrode is formed in the pixel region.

Here, the thin film transistor TFT may include a gate electrode protruding from the gate line, a data electrode protruded from the data line, and a drain electrode spaced apart from the data electrode by a predetermined distance on the gate electrode.

Further, a semiconductor layer is further formed in a lower layer of the data electrode and the drain electrode in a shape covering the gate electrode.

On the thin film transistor substrate 120, a gate insulating film is formed on the entire surface of the substrate including the gate line, and a protective film is formed on the gate insulating film. An upper portion of the predetermined portion of the drain electrode of the protective film is exposed to define a contact hole, and the pixel electrode is connected to the drain electrode through the contact hole.

Here, the gate insulating film and the protective film are formed by depositing the gate insulating film and the protective film to a thickness of 2000 to 4000 ANGSTROM as an inorganic insulating film component.

Meanwhile, in FIG. 4, the above-described various constituent elements of the thin film transistor substrate 120 are simply shown as a plurality of layers. In other words, although the thin film transistor substrate 120 can be generally configured to include the above-described components, a specific configuration of the thin film transistor substrate is such that the liquid crystal display device according to the present invention has a TN mode, a VA mode, Mode, FFS mode, and the like, the type of the thin film transistor substrate 120 may be variously changed in various forms according to the type of the thin film transistor substrate 120, Respectively.

In the case of the color filter substrate 110 described below, the components provided in the color filter are somewhat standardized. However, since the configuration of the color filter substrate 110 can be variously changed, The configuration is also shown simply as a plurality of layers.

That is, the liquid crystal display device according to the present invention is characterized by the shape of the outermost dam formed between the thin film transistor substrate and the color filter substrate. The thin film transistor substrate 120 and the color filter substrate 110 may be formed in various forms.

On the other hand, the pixel regions formed by the intersection of the gate lines and the data lines as described above are referred to as a display region (D). That is, the viewer can visually confirm the image output through the display area of the liquid crystal display device.

Here, the display area D refers to the entire area where the pixel areas are formed as described above, and an image can be output through the pixel area. However, such a display region D can be further divided into a pixel region and a non-pixel region. That is, the pixel region is a region in which a pixel electrode is formed and an image can be output according to the amount of light transmitted, and a non-pixel region is a region formed between the pixel region and the pixel region, .

The display region D or the non-display region C formed on the outskirts of the display region is not limited to the thin film transistor substrate 120 or the color filter substrate 110 but may be a liquid crystal display It is divided across the plane of the device.

3 is a plan view of a liquid crystal display device according to the present invention in which the thin film transistor substrate 120 and the color filter substrate 110 are bonded with the liquid crystal layer 170 interposed therebetween. (D) or a non-display area (C).

Next, the color filter substrate 110 opposed to the thin film transistor substrate 120 includes a black matrix (not shown) for covering non-pixel regions (gate lines, data lines, and thin film transistor A color filter formed of R, G, and B pigments corresponding to the respective pixel regions of the thin film transistor substrate 120, and an overcoat layer formed on the entire surface of the color filter substrate including the color filter.

That is, the color filter substrate 110 includes a black matrix BM defining a plurality of pixel regions, a red (R), green (G), and blue (Blue) color filter formed in each pixel region defined by a black matrix And an overcoat layer OC formed to cover the color filters of red, green, and blue and the black matrix and planarize the TFT substrate 110.

Here, the color filters are formed in the form of a matrix in the display area of the liquid crystal display to determine the color of light emitted from each pixel area.

The black matrix BM is formed in a matrix shape corresponding to the outer shape of each pixel region in the display region of the liquid crystal display device so that light emitted from the pixel region does not affect light emitted from the adjacent pixel region , And functions to prevent light leakage of light emitted from each pixel region.

In addition, the overcoat layer OC functions to flatten the surface of the upper substrate on which the black matrix and the color filter are formed.

On the other hand, in the liquid crystal display device, the liquid crystal of the liquid crystal layer 170 formed between the thin film transistor substrate 120 and the color filter substrate 110 is aligned by the electric field between the common electrode and the pixel electrode formed so as to face the pixel electrode , And the image is expressed by adjusting the amount of light passing through the liquid crystal layer according to the degree of orientation of the liquid crystal layer. The common electrode for performing this function may be any type of the various types of liquid crystal display devices as described above The thin film transistor substrate 120 may be formed on the color filter substrate 110, or may be formed on the color filter substrate 110.

Next, the liquid crystal layer 170 is formed of a liquid crystal and controls the amount of light passing through the liquid crystal according to the angle of rotation of the liquid crystal by the electric field between the common electrode and the pixel electrode.

The first column spacer 160 is connected between the thin film transistor substrate and the color filter substrate to separate the thin film transistor substrate and the color filter substrate at a predetermined interval. Particularly, the first column spacer 160 is formed in the display region D Column spacer.

This first column spacer 160 is similar in structure and function to the second column spacer described below. Thus, the structure and function of the first column spacer 160 is described below in conjunction with the structure and function of the second column spacer 150.

Next, the second column spacer 150 is arranged in a portion of the color filter substrate corresponding to the non-display region C, and the thin film transistor substrate and the color filter substrate are spaced apart from each other by a predetermined distance like a first column spacer Or preventing the color filter substrate from sinking. Hereinafter, the first and second column spacers 160 and 150 will be collectively referred to as a column spacer.

As described above, a spacer is formed between the thin film transistor substrate 120 and the color filter substrate 110 of the liquid crystal display device in order to maintain a constant interval at which the liquid crystal layer 170 is formed. In particular, A column spacer (CS) is formed.

In other words, the column spacer can be formed at a desired position with the same density throughout the liquid crystal display device, whereby the cell gap between the thin film transistor substrate and the color filter substrate can be kept constant, have.

As described above, the basic function of the column spacer is to maintain the gap between the two substrates constant, but it is also possible to form the first column spacer 160 and the non-display region C formed in the display region D The shape and function of the second column spacer 150 may be slightly different.

In other words, the first column spacer 160 formed in the display region D is formed to overlap the black matrix formed along the gate line, and in particular, both the thin film transistor substrate 120 and the color filter substrate 110 As shown in Fig. Accordingly, the first column spacer 160 is faithful to the basic function of the column spacer to maintain the gap between the TFT substrate 120 and the color filter substrate 110.

In addition, when the color filter substrate is bonded to the TFT substrate, the first column spacer 160 may be formed on the color filter substrate 110 and may be adhered to a protective film, an insulating film, The cell spacing between the two substrates can be maintained.

In addition, the first column spacer 160 may be configured to maintain the spacing between the two substrates together with the protrusions 161. That is, the first column spacer 160 is formed on the color filter substrate, the protrusion 161 corresponding to the column spacer is formed on the thin film transistor substrate, and when the two substrates are bonded, the first column spacer By the contact of the projections, one column is formed as a whole, and the interval between the two substrates can be maintained. Here, the protrusion 161 functions to prevent a pressing failure or the like which may occur when the first column spacer 160 directly contacts the thin film transistor substrate.

That is, the first column spacer 160 deposited on the color filter substrate 110 may directly contact the TFT substrate 120 to maintain the cell gap of the two substrates, It is possible.

The second column spacer 150 is formed in the non-display area C as shown in FIG. 4 to supplement the gap between the thin film transistor substrate 120 and the color filter substrate 110, 1 < / RTI > column spacer.

Therefore, when the first column spacer 160 is formed to be adhered to both the thin film transistor and the color filter substrate, the second column spacer 150 is also adhered to both of the two substrates in the non-display region .

In addition, when the first column spacer 160 is formed so as to be in contact with a projection formed on the thin film transistor substrate 120 to maintain the interval between the two substrates, the non-display region is formed to have the same length as the first column spacer Only a second column spacer 150 is formed, so that a certain gap can be formed between the second column spacer and the thin film transistor substrate.

Next, the seal 130 is formed at the outermost portion of the non-display region, and functions to seal the liquid crystal layer 170 by attaching the color filter substrate and the thin film transistor substrate together.

That is, after the thin film transistor substrate and the color filter substrate are separately manufactured, the seal 130 is formed at the outermost portion of the non-display region in a state where the two substrates are bonded together.

Before completely sealing the two substrates, liquid crystal is injected into a seal injection port (not shown) formed in the seal. When the liquid crystal is completely injected into the liquid crystal layer, the liquid crystal injection window is sealed, and finally, the two substrates are sealed by the seal.

In other words, the outermost edge of the liquid crystal display device is sealed by the seal 130, the liquid crystal is injected into the liquid crystal layer through the seal injection port in the sealed state, and finally the seal injection port is sealed, Can be completed.

Next, the boundary dam 142 is formed at a portion of the color filter substrate corresponding to the boundary between the non-display region and the display region, and functions to block the flow of the liquid crystal.

During driving of the liquid crystal display device according to the present invention in a state in which the liquid crystal is sealed to the liquid crystal layer by the seal, the liquid crystal existing in the display area, particularly in the liquid crystal layer, flows into the non- The image quality may be affected.

Therefore, one or two boundary dam 142 is formed at the boundary between the display area and the non-display area, as shown in Figs.

The boundary dam 142 is formed by the same process as that of the second column spacer 150 formed in the non-display area. Therefore, the boundary dam may be configured to be in contact with both the thin film transistor substrate and the color filter substrate. However, as shown in FIG. 4, the boundary dam may be formed in a form having a constant spacing from the color filter substrate .

That is, when the first column spacer 160 formed in the display area comes into contact with the protrusion 161 formed on the color filter substrate to maintain the spacing between the two substrates, the second column spacer and the boundary dam 142 Is formed on the color filter substrate in a state in which the projection is not in contact with the projection (more precisely, the projection corresponding to the second column spacer and the boundary dam is not present in the thin film transistor substrate) The dam 142 is spaced apart from the thin film transistor substrate at regular intervals.

Here, the interval between the second column spacer 150 or the boundary dam 142 and the thin film transistor substrate 120 may be about 2 탆 or more.

The boundary dam 142 may be formed in a linear shape as shown in FIGS. 3 and 4, but it may be formed in a zigzag shape like the outermost dam 141 described below.

In addition, one of the boundary dam 142 may be formed as shown in FIG. 4, and two of the boundary dam 142 may be formed as shown in FIG. 3 (i.e., FIG. 4 is a sectional view of FIG. (The numbers of the first and second outlets 141 and 142 are different from each other), as shown in the outermost dam 141 described in the second embodiment of the present invention.

That is, in the first embodiment or the second embodiment of the present invention, the outermost dam 141 is formed in a zigzag shape or in a shape of two or more straight lines, It may be formed in the same shape as the outer dam.

Finally, the outermost dam 141 is formed inside the seal 130 at the outermost part of the non-display area of the color filter substrate 110, and functions to block the flow of the liquid crystal.

As described above, in order to prevent the liquid crystals in the display area from flowing into the non-display area or from easily moving the liquid crystal in the non-display area to the display area, a boundary dam 142 is formed between the display area and the non- And an outermost dam 141 is formed at the front end of the seal 130 to prevent liquid crystals in the non-display area from flowing in the direction of the seal 130 to deform the seal.

The present invention is characterized by the arrangement structure of the outermost dam 141 as described above. In the first embodiment of the present invention, the outermost dam is formed in a zigzag shape as shown in FIG. 3 Have.

The outermost dam 141 applied to the first embodiment of the present invention can function to prevent the liquid crystals in the non-display area from flowing in the direction of the seal 130 to apply pressure to the seal, 130 may be formed, the injected liquid crystal may flow in the seal direction to prevent the components of the liquid crystal from being changed.

That is, if the liquid crystal formed in the non-display area directly applies pressure to the seal 130, the shape of the seal may be changed, thereby changing the shape of the liquid crystal display itself. Therefore, the outermost dam 141 can prevent the liquid crystal from directly applying pressure to the seal.

Further, when the liquid crystal is injected after the high-temperature seal is formed, the liquid crystal may change its characteristics when it comes into contact with the seal, and the seal may also change its characteristics due to its chemical action with the liquid crystal.

Accordingly, the outermost dam 141 may function to prevent the liquid crystal injected after the seal is formed from being quickly brought into contact with the seal.

In addition, the outermost dam 141 is characterized in that it can reduce the amount of liquid crystal filled in the liquid crystal layer in addition to the structural function described above.

That is, the volume of the outermost dam formed in a zigzag shape as in the first embodiment of the present invention is larger than the volume of the straight-line outermost dam formed in the conventional liquid crystal display device.

Accordingly, the amount of the liquid crystal filled in the liquid crystal layer 170 of the liquid crystal display device according to the first embodiment of the present invention becomes smaller than the amount of the liquid crystal filled in the liquid crystal layer of the conventional liquid crystal display device.

That is, the first embodiment of the present invention is characterized in that it can reduce the amount of expensive liquid crystal.

On the other hand, the zigzag outermost dam may be formed as one continuous component, but it may be formed as a plurality of component elements spaced apart at regular intervals as shown in FIG. That is, if the zigzag outermost dam 141 is formed of one component, the flow of the liquid crystal is completely blocked, so that a strong pressure may be applied to the outermost dam. Therefore, the outermost dam 141 has a certain length It is preferable that plural pieces are formed in a form that is broken each time. Here, each of the outermost dams broken every predetermined length is simply referred to as a partial outermost dam 141a. That is, the outermost dam applied to the first embodiment of the present invention may be a single continuous component, but it may also be composed of a plurality of partially outermost dams 141a that are broken.

In FIG. 3, the zigzag outermost dam 141 is formed as one layer at the outermost part of the non-display area, but the outermost dam may be formed in two or more layers. 3, the plurality of partial outermost dams 141a are continuously arranged in a state where they are not connected to each other at the outermost part of the non-display area, but the plurality of partial outermost dams 141a are formed so as to overlap with each other It is possible.

For example, a seal is formed at the outermost part of the non-display area, an outermost dam forming a first layer is formed inside the seal, and an outermost dam forming a second layer is formed inside the seal There may be.

On the other hand, the outermost dam 141 is formed by the same process as the second column spacer 150 formed in the non-display area, similarly to the boundary dam 1412. Therefore, the outermost dam may be configured to be in contact with both the thin film transistor substrate and the color filter substrate. However, as shown in FIG. 4, the outermost dam may be formed in a form having a predetermined space (called a pressed column spacer shape) .

FIG. 5 is a plan view of a liquid crystal display device according to a second embodiment of the present invention, and shows only a partial plan view of the entire liquid crystal display device. 6 is a cross-sectional view taken along the line G-G 'in the plan view of FIG.

The liquid crystal display device according to the second embodiment of the present invention has the same configuration and function as those of the liquid crystal display device according to the first embodiment of the present invention except that the shape of the outermost dam 141 is different, Only the outermost dam 141 will be described in detail, and descriptions of the remaining structures are omitted or simply referred to.

The outermost dam 141 applied to the liquid crystal display according to the second embodiment of the present invention is formed in a straight line shape as shown in FIG. 5, and in particular, the outermost dam is divided into a plurality of layers 141b, 141c, And 141d.

That is, as described in the first embodiment, the outermost dam 141 can be formed as a plurality of partial outermost dams 141a, and these partial outermost dams are continuously formed at regular intervals, The outermost dam may be formed. On the other hand, the second embodiment of the present invention is characterized in that the outermost dam is formed in a straight line shape, and the outermost dam constructed in a straight line shape is formed of several layers.

For example, the outermost dam adjacent to the seal in FIG. 5 may be referred to as an outermost dam (hereinafter, simply referred to as a 'first-layer outermost dam') 141b forming the first layer, The outermost dam formed by the plurality of partial outermost dams may be referred to as an outermost dam (hereinafter, simply referred to as a 'second-layer outermost dam') 141c forming the second layer, The outermost dam formed by the plurality of partial outermost dams may be referred to as an outermost dam (hereinafter, simply referred to as a 'third-layer outermost dam') 141d forming the third layer.

That is, the outermost dams constituting the liquid crystal display device according to the present invention may be formed in a zigzag shape as in the first embodiment, or the outermost dams formed in a linear shape as in the second embodiment may be formed in a plurality of layers As shown in FIG.

In particular, each of the outermost dams 141b, 141c, and 141d forming one layer in the second embodiment may include a plurality of partial outermost dams as in the first embodiment.

In addition, in the first embodiment, the zigzag outermost dam may be formed by a plurality of partial outermost dams, and may be formed as a plurality of layers as in the second embodiment.

7 is a cross-sectional view showing a state in which the liquid crystal display device according to the present invention is attached to the panel guide.

7, an adhesive or an adhesive tape 500 is attached to the non-display area of the liquid crystal display device according to the present invention. The non-display area is formed by the adhesive or the adhesive tape between the panel guide 600, Respectively.

A backlight unit 700 is disposed at the lower end of the liquid crystal display device. The backlight unit and the panel guide are mounted inside the bottom cover 800.

That is, in the liquid crystal display device according to the present invention as described above, the outermost dam 141 for supporting the color filter substrate 110 and the thin film transistor substrate 120 of the liquid crystal display device is formed in a zigzag form Display area C in the form of a plurality of straight lines (second embodiment), the adhesive agent or the non-display area to which the adhesive tape 500 is adhered is placed in the panel guide 600 , Even if a force is applied to the non-display area through an adhesive or an adhesive tape or the like by the panel guide, such force can be more easily dispersed.

Therefore, the deformation of the non-display area C of the liquid crystal display device is reduced, and the phenomenon of the glue or the adhesive tape 500 being lifted is reduced. Therefore, in the conventional liquid crystal display device, Can be reduced.

In the liquid crystal display device according to the present invention, the outermost dam is formed in a zigzag shape or a plurality of straight lines to increase the volume occupied by the outermost dam in the non-display area, Of the total amount of water.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

110: color filter substrate 120: thin film transistor substrate
130: Seal 141: Outermost dam
142: boundary dam 150: second column spacer
160: first column spacer 170: liquid crystal layer

Claims (10)

A thin film transistor substrate including a display region including pixel regions and a non-display region formed outside the display region;
A color filter substrate on which color filters corresponding to the pixel regions are formed;
A liquid crystal layer formed between the thin film transistor substrate and the color filter substrate;
A seal formed at the outermost portion of the non-display region to seal the liquid crystal layer by attaching the color filter substrate and the thin film transistor substrate together;
A boundary dam formed at a portion of the color filter substrate corresponding to a boundary between the non-display region and the display region and blocking the flow of the liquid crystal filled in the liquid crystal layer;
A column spacer arranged at a portion corresponding to the non-display region of the color filter substrate; And
And an outermost dam which is formed in a zigzag shape so as to sandwich the column spacer from the left to the right in the inside of the seal at the outermost part of the non-display area of the color filter substrate and blocks the flow of the liquid crystal. . The method according to claim 1,
Wherein the boundary dam and the outermost dam are in contact with both the thin film transistor substrate and the color filter substrate. The method according to claim 1,
Wherein the boundary dam and the outermost dam are formed on the color filter substrate and have a predetermined gap from the thin film transistor substrate. The method according to claim 1,
Wherein the zigzag outermost dam is formed of a plurality of layers. The method according to claim 1,
Wherein the zigzag outermost dam is formed by a plurality of partial outermost dams. The method according to claim 1,
Wherein the boundary dam is formed in a zigzag shape like the shape of the outermost dam. A thin film transistor substrate including a display region including pixel regions and a non-display region formed outside the display region;
A color filter substrate on which color filters corresponding to the pixel regions are formed;
A liquid crystal layer formed between the thin film transistor substrate and the color filter substrate;
A seal formed at the outermost portion of the non-display region to seal the liquid crystal layer by attaching the color filter substrate and the thin film transistor substrate together;
A boundary dam formed at a portion of the color filter substrate corresponding to a boundary between the non-display region and the display region and blocking the flow of the liquid crystal filled in the liquid crystal layer;
A column spacer arranged to form a plurality of rows and columns in a portion of the color filter substrate corresponding to the non-display region; And
And an outermost dam which is formed in a linear shape that is interrupted by a predetermined length in the inside of the seal outermost part of the non-display area of the color filter substrate to block the flow of the liquid crystal,
Wherein the linear outermost dam is formed of a plurality of layers, and a part of the column spacer is interposed between a plurality of layers of the outermost dam. 8. The method of claim 7,
Wherein the boundary dam and the outermost dam are in contact with both the thin film transistor substrate and the color filter substrate. 8. The method of claim 7,
Wherein the boundary dam and the outermost dam are formed on the color filter substrate and have a predetermined gap from the thin film transistor substrate. 8. The method of claim 7,
Wherein the straight-line outermost dam is formed by a plurality of partial outermost dams.

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