KR101356173B1 - Liquide crystal display device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a technique for easily curing a seal member for bonding a thin film transistor array substrate and a color filter substrate. The present invention includes an active region including pixels defined by intersections of a plurality of data lines and a gate line, and a first substrate on which an inactive region is formed outside the active region; A second substrate on which a color filter layer and a light shielding layer are formed; A seal member formed between the inactive region of the first substrate and the light shielding layer of the second substrate; A region formed on the first substrate and formed under the seal member and overlapping the seal member is achieved by an open common voltage line.

Description

[0001] LIQUIDE CRYSTAL DISPLAY DEVICE [0002]

1 is a cross-sectional view showing a partial cross section of a general liquid crystal display device.

2 is a plan view of a liquid crystal display according to a first embodiment of the present invention.

3 is a cross-sectional view showing a plane taken along the line II of FIG. 2.

4 is a plan view of a liquid crystal display according to a second exemplary embodiment of the present invention.

FIG. 5 is a cross-sectional view illustrating a plane taken along the line II-II of FIG. 4. FIG.

6 is a plan view of a liquid crystal display according to a third exemplary embodiment of the present invention.

DESCRIPTION OF THE REFERENCE SYMBOLS

100, 200: thin film transistor array substrate

105, 205: light shielding layer

106, 206: sealant

107: common voltage line

210: ground line

108,208: insulating layer

AA: active area

NA: inactive area

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device. In particular, a liquid crystal display in which a seal material for bonding a thin film transistor array substrate and a color filter substrate is sufficiently secured to expose an UV area, and thus curing of the seal material is effectively performed in the manufacturing process of the liquid crystal display device. Relates to a device.

In general, a liquid crystal display device includes a liquid crystal panel in which a color filter substrate as an upper substrate and a thin film transistor array substrate as a lower substrate are opposed to each other, and a liquid crystal layer is filled therebetween, a scan signal is supplied to the liquid crystal panel, and image information is supplied by supplying image information. It is configured to include a driver for performing the operation of the panel.

The thin film transistor array substrate may have a gate line that is regularly spaced apart from one another and a data line that is vertically spaced apart from each other intersect with each other, and a pixel is formed in an area where the gate line and the data line cross each other to form an active region. Form an area.

Hereinafter, a general liquid crystal display device will be described with reference to the accompanying drawings.

1 is a cross-sectional view showing a partial cross section of a general liquid crystal display device.

A conventional liquid crystal display device includes an active region (not shown) including pixels defined by intersections of a plurality of data lines and a gate line, and a first substrate on which an inactive region (not shown) is formed outside the active region. 10; A second substrate 11 having a color filter layer 14 and a light shielding layer 15 formed thereon; A seal member (16) formed between the inactive region of the first substrate (10) and the light shielding layer (15) of the second substrate (11); It is formed on the first substrate 10, and comprises a common voltage line 17 formed in the lower portion of the seal member 16 overlapping in the longitudinal direction of the seal member 16.

The first substrate 10 is a thin film transistor array substrate. Pixels are defined by crossing data lines and gate lines on the first substrate 10, and thin film transistors and pixel electrodes are formed in each pixel.

The second substrate 11 is a color filter array substrate, and a color filter layer 14 of RGB (RED, GREEN, BLUE) for color expression is formed on the second substrate 11, and the first substrate ( A light blocking layer 15 that prevents light leakage is formed in a region corresponding to the inactive region of 10). In addition, a common electrode 19 for applying a voltage to the liquid crystal is formed on the second substrate 11 together with the pixel electrode formed on the first substrate 10.

The first substrate 10 in which the active region and the inactive region are defined is disposed to face the second substrate 11, and the seal member 16 is formed along the periphery of the active region in the inactive region. ) Serves to bond the two substrates 10 and 11 and prevent leakage of the liquid crystal filled between the two substrates 10 and 11.

The seal member 16 is a photocurable seal member. The seal member 16 is cured by applying the seal member 16 to the first substrate 10 or the second substrate 11, bonding the two substrates 10 and 11, and then exposing them to UV light.

However, as shown in FIG. 1, the light blocking layer 15 is formed on the upper portion of the seal member 16, and a common voltage line 17 is formed on the lower portion of the seal member 16, thereby curing the seal member 16. There is a problem that the seal material 16 is not cured because the amount of UV is not large to reach. When the seal member 16 is uncured as described above, the height of the seal member 16 between the first substrate 10 and the second substrate 11 is uneven, so that the seal member 16 and the substrates 10 and 11 are uneven. The gap Gap is formed or the seal member 16 is broken due to the weakening of the adhesive force of the seal member 16, and thus the liquid crystal is leaked to the outside of the seal member 16, thereby reducing the reliability of the product.

In addition, although not shown in the drawings, the seal member may be formed to overlap the ground line for grounding the antistatic circuit and the length of the ground line, depending on the model of the liquid crystal display device. In this case, a light shielding layer is formed on the seal member. Since the ground line is formed at the bottom of the seal member, the amount of UV hardening the seal member does not reach the seal member so that the seal member is uncured. In this case, when the seal member is uncured, a gap between the seal member and the substrate is formed because the height of the seal member between the first substrate and the second substrate is uneven, or the seal member bursts due to weak adhesion of the seal member, causing liquid crystal to leak out of the seal member. It acts as a factor to reduce the reliability of the product.

Accordingly, the present invention has been made to solve the above problems of the conventional liquid crystal display device, and an object of the present invention is to widen the area where the sealing material for bonding the thin film transistor array substrate and the color filter substrate is exposed to UV, thereby It is an object of the present invention to provide a liquid crystal display device in which the curing of the seal material is effectively performed in the manufacturing process of the display device.

According to an aspect of the present invention, there is provided an LCD including an active region including pixels defined by intersections of a plurality of data lines and a gate line, and an inactive region formed outside the active region. 1 substrate; A data pad and a gate pad formed in an inactive region of the first substrate to supply a signal to the data line and the gate line; A second substrate on which a color filter layer and a light shielding layer are formed; A common electrode formed on the color filter layer of the second substrate; A seal member formed between the inactive region of the first substrate and the light shielding layer of the second substrate, the seal member being formed along the periphery of the active region of the first substrate; The non-active region of the first substrate is formed at the opposite end of the region where the data pad and the gate pad are formed, and is formed under the seal member along the periphery of the active region, and the region overlapping the seal member is open ( open common voltage line; An insulating layer formed on and including an open portion of the common voltage line; And a common voltage pad and a common voltage connection line formed in an inactive region of the first substrate and receiving a common voltage from the outside and supplying the common electrode to the common electrode through the common voltage line, wherein the seal member includes the common voltage. Where it overlaps the line, is formed to be located between the upper portion of the open area of the common voltage line and the light shielding layer of the second substrate, the insulation formed on the common voltage line due to the open area of the common voltage line It is characterized in that the surface of the layer is uneven to increase the area of contact with the insulating layer.

The seal member is characterized in that it is photocurable.

The seal member may be narrower than the common voltage line, and an insulating layer may be formed between the common voltage line and the seal member.
Another liquid crystal display according to the present invention comprises: a first substrate including an active region including pixels defined by intersections of a plurality of data lines and a gate line, and an inactive region outside the active region; A data pad and a gate pad formed in an inactive region of the first substrate to supply a signal to the data line and the gate line; A second substrate on which a color filter and a light shielding layer are formed; A common electrode formed on the color filter layer of the second substrate; A seal member formed between the inactive region of the first substrate and the light shielding layer of the second substrate, the seal member being formed along the periphery of the active region of the first substrate; An antistatic circuit formed at ends of the data line and the gate line to prevent disconnection by static electricity; The non-active region of the first substrate is formed at the opposite end of the region where the data pad and the gate pad are formed, and is formed under the seal member along the periphery of the active region, and the region overlapping the seal member is open ( open) ground line; And an insulating layer formed thereon, including an open portion of the ground line, wherein the seal member is overlapped with the ground line, the upper portion of the open area of the ground line and the light shielding layer of the second substrate. It is formed so as to be located between, due to the open area of the ground line is characterized in that the surface of the insulating layer formed on the ground line is uneven to increase the area in contact with the insulating layer.

Hereinafter, a liquid crystal display according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

≪ Embodiment 1 >

First, a liquid crystal display according to a first embodiment of the present invention will be described with reference to FIGS. 2 and 3.

FIG. 2 is a plan view of a liquid crystal display according to a first exemplary embodiment of the present invention. The thin film transistor array substrate and the seal member as the first substrate are illustrated, and the color filter substrate is not illustrated for convenience of description.

FIG. 3 is a cross-sectional view illustrating a plane cut along the line I-I of FIG. 2, illustrating a state in which the first substrate and the second substrate are bonded by a seal member.

As shown in FIG. 2 and FIG. 3, the liquid crystal display according to the first exemplary embodiment of the present invention includes an active region including pixels defined by the intersection of the plurality of data lines 102 and the gate lines 103. A first substrate 100 having AA and an inactive region NA formed outside the active region AA; A second substrate 101 on which the color filter layer 104 and the light shielding layer 105 are formed; A seal member 106 formed between the inactive region NA of the first substrate 100 and the light shielding layer 105 of the second substrate 101; A common voltage line 107 is formed on the first substrate 100 and is formed under the seal member 106, and a region overlapping the seal member 106 is opened.

The first substrate 100 is a thin film transistor array substrate. A thin film transistor and a pixel electrode are formed on each of the pixels defined by the intersection of the data line 102 and the gate line 103 on the first substrate 100.

The first substrate 100 is divided into an active region AA and an inactive region NA. In the active region AA, a pixel defined by an intersection of the data line 102 and the gate line 103 is formed. The inactive area NA is an area of the first substrate 100 excluding the active area AA.

The data pad 102a and the gate pad 103a are provided in the inactive region NA to supply a signal to the data line 102 and the gate line 103. The data pad 102a generally corresponds to the upper side of the active region AA in the inactive region NA, and the gate pad 103a corresponds to the left side of the active region AA in the inactive region NA. Where it is formed.

The common voltage line 107 is formed in the inactive region NA along a portion of the outer portion of the active region AA. The common voltage line 107 receives a common voltage from the outside through the common voltage pad 107a and the common voltage connection line 107b formed in the inactive area NA, and is formed on the second substrate 101. To 109. The common voltage line 107 and the common electrode 109 are electrically connected to each other through a silver dot.

As shown in FIGS. 2 and 3, the common voltage line 107 is opened to overlap with the seal member 106, which will be described in detail below.

The second substrate 101 is a color filter array substrate, and a color filter layer 104 of RGB (RED, GREEN, BLUE) for color expression is formed on the second substrate 101, and the first substrate 100 is formed. Light blocking layer 105 is formed in a region corresponding to the inactive region NA of the light emitting layer. In this case, the color filter layer 104 includes a light blocking layer including RGB, which is to prevent color mixing due to light leakage between the colors.

In addition, the second substrate 101 is formed with a common electrode 109 for applying a voltage to the liquid crystal panel together with the pixel electrode formed on the second substrate 101.

As illustrated in FIG. 3, the common electrode 109 is formed on the color filter layer 104 formed on the second substrate 101.

As described above, the common electrode 109 receives a common voltage from the outside from the common voltage line 107 through silver dots to drive the liquid crystal together with the pixel electrode.

As shown in FIG. 2, the seal member 106 is formed in the inactive region NA of the first substrate 100 and is applied along the outer portion of the active region AA. Here, in a place where the common voltage line 107 overlaps the common voltage line 107 formed on the first substrate 100, the light shielding portion is formed on the second substrate 101 and the upper portion of the region where the common voltage line 107 is opened. It is formed to be located between the layers (104). For convenience of description, an insulating layer (see 108 of FIG. 3) formed between the seal member 106 and the common voltage line 107 is not illustrated in FIG. 2. A description regarding the insulating layer will be given below with reference to FIG. 3.

The seal member 106 maintains a height between the first substrate 100 and the second substrate 101, prevents the liquid crystal from leaking to the outside, and prevents air from flowing into the liquid crystal layer. The liquid crystal has a property of absorbing moisture when it is left in the air. When the liquid crystal is left in the air and absorbs moisture, the liquid crystal has a low specific resistance, and impurities are generated to deteriorate screen quality of the liquid crystal display. There is a problem.

Therefore, the thickness and height uniformity and adhesive strength of the seal member 106 are very important management items in the manufacture of the liquid crystal display device.

In the manufacture of the liquid crystal display device, a time point at which the seal member 106 is formed is as follows.

According to the method of forming a liquid crystal layer between the first substrate 100 and the second substrate 101 in the method of manufacturing a liquid crystal display device, there are two types of liquid crystal injection methods and liquid crystal dropping methods. The sealing material 106 is applied to the first substrate 100 or the second substrate 101 to bond the two substrates 100 and 101, and then the sealing material 106 is cured and the liquid crystal is injected. In addition, in the liquid crystal dropping method, the sealing material 106 is applied to the first substrate 100, the liquid crystal is dropped, and then bonded to the second substrate 101 to cure the sealing material 106.

The seal member 106 has thermosetting which is cured by heat according to a method of curing, and photocuring which is cured by UV.

The thermosetting seal material has the advantages of high mechanical strength, high adhesive strength, high crosslinking degree even at a relatively high temperature, and mainly epoxy resin, phenol resin, and the like. In addition, the photocurable seal member 106 is mainly used in a large size liquid crystal display device, and can be cured at a low temperature and has a short curing time, and a problem due to thermal expansion when applied to a large liquid crystal display device It does not occur, and when the first substrate 100 and the second substrate 101 are bonded to each other, the bonding degree is also excellent, and the use range thereof is increasing.

As illustrated in FIG. 2, the common voltage line 107 is formed in the inactive region NA of the first substrate 100 and is formed along a portion of the active region AA. In more detail, the inactive region NA of the first substrate 100 is active at the opposite end of the region where the data pad 102a and the gate pad 103a are formed, that is, in the inactive region NA of FIG. 2. It is formed on the right side and the lower side of the region AA.

The common voltage line 107 is supplied with a common voltage from the outside through the common voltage pad 107a and the common voltage connection line 107b formed in the inactive area NA of the first substrate 100. It supplies to the common electrode 109 formed in 101. Here, the common voltage line 107 and the common electrode 109 are electrically connected through silver dots.

As shown in FIGS. 2 and 3, the common voltage line 107 has an open shape overlapping with the seal member 106, and the common voltage line 107 including the open portion is disposed above the common voltage line 107. An insulating layer 108 is formed.

That is, referring to FIG. 3, a common voltage line 107 opened as much as an area to overlap with the seal member 106 is formed on the glass substrate 112 of the first substrate 100, and the insulating layer 108 is formed thereon. ) Is formed. On the insulating layer 108, a seal member 106 having the same width as that of the common voltage line 107 is opened is applied, and the second substrate 101 is placed on the insulating layer 108 to be bonded to the lower portion of the first substrate 100. UV is applied toward the first substrate 100 to cure the seal member 106. Here, since the light blocking layer 105 formed on the glass substrate 113 of the second substrate 101 is located on the upper portion of the seal member 106, UV cannot reach the seal member 106, and thus, when the seal member 106 is hardened. UV is exposed from the lower side of the first substrate 100 in the direction of the first substrate 100 to expose the lower portion, ie, the back side, of the seal member 106 to UV.

As described above, since the lower front area of the seal member 106 is exposed to UV through the area in which the common voltage line 107 is opened, the seal member 106 is efficiently cured. Thus, the seal member 106 is cured uniformly.

In addition, as shown in FIG. 3, the lower portion of the seal member 106 has an uneven surface of the insulating layer 108 formed on the common voltage line 107 due to the open area of the common voltage line 107. It can be seen that. Therefore, the area where the seal member 107 is in contact with the insulating layer 108 is large, and the adhesion degree becomes excellent when the seal member 106 is cured.

≪ Embodiment 2 >

Hereinafter, a liquid crystal display according to a second exemplary embodiment of the present invention will be described with reference to FIGS. 4 and 5.

FIG. 4 is a plan view of a liquid crystal display according to a second exemplary embodiment of the present invention. The thin film transistor array substrate and the seal member as the first substrate are illustrated, and the color filter substrate is not illustrated for convenience of description.

FIG. 5 is a cross-sectional view illustrating a plane taken along II-II of FIG. 4, illustrating a state in which the first substrate and the second substrate are bonded by a seal member.

In the description of the second embodiment according to the present invention, duplicated description of the first embodiment described above will be omitted.

As shown in FIGS. 4 and 5, the liquid crystal display according to the first exemplary embodiment of the present invention includes an active region including pixels defined by the intersection of a plurality of data lines 202 and gate lines 203. A first substrate 200 having AA and an inactive region NA formed outside the active region AA; A second substrate 201 having a color filter layer 204 and a light shielding layer 205 formed thereon; A seal member 206 formed between the inactive region NA of the first substrate 200 and the light shielding layer 205 of the second substrate 201; An antistatic circuit 211 formed at ends of the data line 202 and the gate line 203; A ground line 210 formed on the first substrate 200 to ground the antistatic circuit 211. The ground line 210 is formed under the seal member 206. An area overlapping with the seal member 206 is opened.

The first substrate 200 is a thin film transistor array substrate. A thin film transistor and a pixel electrode are formed for each pixel defined by the intersection of the data line 202 and the gate line 203 on the first substrate 200.

The first substrate 200 is divided into an active region AA and an inactive region NA. In the active region AA, pixels defined by the intersection of the data line 202 and the gate line 203 are formed. The inactive area NA is an area except the active area AA in the first substrate 201.

The inactive area NA includes a data pad 202a and a gate pad 203a for supplying signals to the data line 202 and the gate line 203. The data pad 202a is typically located above the active area AA in the inactive area NA, and the gate pad 203a is located at the left side of the active area AA in the inactive area NA. Is formed.

A ground line 210 is formed in a portion of the inactive area NA along a portion of an outer portion of the active area AA.

The ground line 210 is formed at ends of the data line 202 and the gate line 203 and serves to ground the antistatic circuit 211. The antistatic circuit 211 serves to prevent disconnection due to static electricity.

As shown in FIGS. 4 and 5, the ground line is opened to overlap with the seal member 206, which will be described in detail below.

The second substrate 201 is a color filter array substrate, and a color filter layer 204 of RGB (RED, GREEN, BLUE) for color expression is formed on the second substrate 201, and the first substrate 200 is formed. The light blocking layer 205 is formed in a region corresponding to the inactive region NA of FIG. Here, the color filter layer 204 is formed with a light blocking layer including RGB, which is to prevent mixing of colors due to light leakage between the respective colors.

As shown in FIG. 4, the seal member 206 is formed in the inactive region NA of the first substrate 200 and is applied along the outer portion of the active region AA. Here, in a place where the ground line 210 overlaps the ground line 210 formed on the first substrate 200, the seal member 206 is formed on the light blocking layer formed on the upper portion of the region where the ground line 210 is opened and on the second substrate 201. 205 is positioned between.

As shown in FIG. 4, the ground line 210 is formed in the inactive region NA of the first substrate 200 and is formed along a part of the outer portion of the active region AA. More specifically, the inactive region NA of the first substrate 200 is active at the opposite end of the region where the data pad 202a and the gate pad 203a are formed, that is, in the inactive region NA of FIG. 2. It is formed on the right side and the lower side of the region AA.

As shown in FIGS. 4 and 5, the ground line 210 has an open shape overlapping with the seal member 206, and is disposed on the common voltage line 210 including the open portion. An insulating layer 208 is formed.

That is, referring to FIG. 5, a ground line 210 opened as much as an area to overlap with the seal member 206 is formed on the glass substrate 212 of the first substrate 200, and the insulating layer 208 is formed thereon. Is formed. The sealing material 206 having the same width as that of the ground line 210 is opened is applied on the insulating layer 208, and the second substrate 201 is placed on the insulating layer 208 to be bonded to each other. UV is applied toward the first substrate 200 to cure the seal member 206. Here, since the light blocking layer 205 formed on the glass substrate 201 of the second substrate 201 is positioned on the upper portion of the seal member 206, UV cannot reach the seal member 206, and thus, when the seal member 206 is hardened. UV is exposed from the lower side of the first substrate 200 toward the first substrate 200 to expose the lower portion of the seal member 206, that is, the back surface, to the UV.

As described above, since the lower entire area of the seal member 206 is exposed to UV through the area in which the ground line 210 is opened, curing of the seal member 206 is performed efficiently. Thus, the seal member 206 is uniformly cured.

In addition, as shown in FIG. 5, the lower portion of the seal member 206 has an uneven surface of the ground line 210, so that the surface of the insulating layer 208 formed on the ground line 210 is uneven. Can be. Therefore, the area where the seal member 206 is in contact with the insulating layer 208 is large, and the degree of adhesion thereof becomes excellent when the seal member 206 is cured.

≪ Third Embodiment >

Hereinafter, a liquid crystal display according to a third exemplary embodiment of the present invention will be described with reference to FIG. 6.

FIG. 6 is a plan view of a liquid crystal display according to a third exemplary embodiment of the present invention, and shows a part of a thin film transistor array substrate as a first substrate, and a sealant is not shown for convenience of description. Components not shown in FIG. 6 will be referred to FIG. 2 or 3.

Since the third embodiment according to the present invention is an example in which the shape of the open area of the common voltage line or the ground line described in the first and second embodiments described above is modified, the third embodiment according to the present invention is modified. In the description, overlapping descriptions according to the first and second embodiments will be omitted, and the common voltage line and the ground line will be described with reference numeral 310.

As illustrated in FIG. 6, the common voltage line or the ground line 310 is partially open at an area overlapping a lower portion of the seal member (see 106 of FIG. 2 or 3).

That is, in the region in which the common voltage line or the ground line 310 is opened, as shown in FIG. 6, a plurality of holes are formed to form a pattern. The plurality of holes have the same width as that of the seal material, and a plurality of holes are formed along the length of the seal material, and these holes form a pattern.

Here, although a plurality of holes having the same width as the width of the seal member to be applied on the common voltage line or the ground line 310 is formed in the portion to overlap with the seal member in the common voltage line or the ground line 310, according to the present invention. The plurality of holes formed in the common voltage line or the ground line 310 are not limited thereto in shape and number, and may be sufficiently applied and changed.

In addition, the area in which the common voltage line or the ground line 310 is opened may be formed by applying a sealant to the first substrate and bonding it with the second substrate (see 101 in FIG. 3) to UV the back surface of the first substrate. It is preferable to apply and design appropriately within the range which UV which passed through the said open area | region can harden | cure a sealing material at the time of exposing to the said surface.

In FIG. 6, reference numeral 312 denotes a glass substrate 312 that is a component of the first substrate (see 100 of FIG. 3).

As described in detail above, the present invention opens a portion where the common voltage line or the ground line overlaps with the sealing material, thereby opening up a portion where the sealing material for bonding the thin film transistor array substrate and the color filter substrate is sufficiently exposed to UV. In the manufacturing process of the liquid crystal display device, there is an advantage that the curing of the seal material is effectively performed.

Claims (14)

An active region including pixels defined by intersections of a plurality of data lines and a gate line, and a first substrate having an inactive region formed outside the active region; A data pad and a gate pad formed in an inactive region of the first substrate to supply a signal to the data line and the gate line; A second substrate on which a color filter layer and a light shielding layer are formed; A common electrode formed on the color filter layer of the second substrate; A seal member formed between the inactive region of the first substrate and the light shielding layer of the second substrate, the seal member being formed along the periphery of the active region of the first substrate; The non-active region of the first substrate is formed at the opposite end of the region where the data pad and the gate pad are formed, and is formed under the seal member along the periphery of the active region, and the region overlapping the seal member is open ( open common voltage line; An insulating layer formed on and including an open portion of the common voltage line; And A common voltage pad and a common voltage connection line formed in an inactive region of the first substrate and receiving a common voltage from an external source and supplying the common electrode to the common electrode through the common voltage line; Wherein the seal member overlaps with the common voltage line, the seal member is formed to be positioned between the upper portion of the open area of the common voltage line and the light shielding layer of the second substrate, due to the open area of the common voltage line The surface of the insulating layer formed on the voltage line is uneven, so that the area in contact with the insulating layer increases. The liquid crystal display device according to claim 1, wherein the seal member is photocurable. The liquid crystal display of claim 1, wherein the seal member is narrower in width than the common voltage line. delete The liquid crystal display of claim 1, wherein the common voltage line is entirely open in an area overlapping the seal member. The liquid crystal display of claim 1, wherein a part of the region in which the common voltage line overlaps the seal member is opened. The liquid crystal display of claim 6, wherein a part of the common voltage line is opened by forming a plurality of holes in an area overlapping the seal member. A first substrate including an active region including pixels defined by intersections of a plurality of data lines and a gate line, and an inactive region outside the active region; A data pad and a gate pad formed in an inactive region of the first substrate to supply a signal to the data line and the gate line; A second substrate on which a color filter and a light shielding layer are formed; A common electrode formed on the color filter layer of the second substrate; A seal member formed between the inactive region of the first substrate and the light shielding layer of the second substrate, the seal member being formed along the periphery of the active region of the first substrate; An antistatic circuit formed at ends of the data line and the gate line to prevent disconnection by static electricity; The non-active region of the first substrate is formed at the opposite end of the region where the data pad and the gate pad are formed, and is formed under the seal member along the periphery of the active region, and the region overlapping the seal member is opened ( open) ground line; And An insulating layer formed thereon, including an open portion of the ground line, Where the seal member overlaps with the ground line, the seal member is formed to be positioned between the upper portion of the open area of the ground line and the light shielding layer of the second substrate, the upper portion of the ground line due to the open area of the ground line The surface of the formed insulating layer is uneven, so that the area in contact with the insulating layer increases. The liquid crystal display device according to claim 8, wherein the seal member is photocurable. The liquid crystal display device according to claim 8, wherein the seal member is narrower in width than the ground line. delete The liquid crystal display of claim 8, wherein the entire area of the ground line overlapping the seal member is opened. The liquid crystal display of claim 8, wherein the ground line has a portion of an area overlapping the seal member. The liquid crystal display of claim 13, wherein the ground line is partially opened by forming a plurality of holes in an area overlapping the seal member.

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