KR102271231B1 - Liquid crystal display device and fabricating method of the same - Google Patents

Abstract

The present invention discloses a liquid crystal display device and a method for manufacturing the same. The disclosed liquid crystal display device and method for manufacturing the same of the present invention include a driving circuit unit disposed on a non-display area of a first substrate divided into a display area and a non-display area, a color layer disposed on the driving circuit unit, and a color layer disposed on the color layer. a planarization layer disposed, a black seal overlapping a portion of the planarization layer, a second substrate disposed to face the first substrate, and one surface of the second substrate in a region corresponding to the non-display area of the first substrate and a black column spacer disposed on a portion of the .

Description

Liquid crystal display device and manufacturing method thereof

The present invention relates to a liquid crystal display device and a manufacturing method thereof, and more particularly, to a liquid crystal display device capable of reducing a bezel size of the liquid crystal display device and preventing light leakage, and a manufacturing method thereof.

Liquid crystal display devices, ranging from personal portable electronic devices such as mobile phones and PDAs to monitors and large TVs, have been in the spotlight as a high-tech display device with low power consumption, good portability, technology intensive, and high added value.

In such a liquid crystal display device, liquid crystal is injected into one of two substrates each having electrodes on one side, the electrodes are bonded to face each other, and an electric field is generated by applying a voltage to the electrodes formed on the respective substrates. By moving liquid crystal molecules, it is a device that expresses an image by the transmittance of light that changes according to a change in the position of the liquid crystal.

Recently, liquid crystal displays are being actively applied not only to TVs or monitors but also to personal portable electronic devices such as mobile phones and PDAs. In display devices in various fields, the display area is wide and the bezel is a non-display area other than the display area. The area is required to be formed as small as possible.

In such a liquid crystal display, a sealant in a gel state is applied to a non-display area of one of the two substrates to prevent leakage of liquid crystal interposed between the two substrates. After that, the two substrates are bonded, and UV light is irradiated to cure the sealant in a gel state.

In order to cure the gel-type sealant, UV light is irradiated to reach the gel-type sealant through a lower substrate on which a driving circuit unit such as a gate driver is disposed among the two substrates. At this time, a path through which the UV light can pass is provided by forming the metal wires of the driving circuit part disposed on the lower substrate to be spaced apart from each other so that the UV light can easily reach the gel-type sealant.

As described above, by arranging the metal wirings apart, the width of the driving circuit portion increases. Accordingly, there is a problem in that the bezel size of the liquid crystal display device increases.

An object of the present invention is to provide a liquid crystal display device capable of implementing a narrow bezel and preventing light leakage, and a method for manufacturing the same.

A liquid crystal display device and a method for manufacturing the same of the present invention for solving the problems of the prior art as described above include a driving circuit unit disposed on a non-display area of a first substrate divided into a display area and a non-display area, and a driving circuit unit on the driving circuit unit. a color layer disposed on the color layer, a planarization layer disposed on the color layer, a black seal overlapping a portion of the planarization layer, a second substrate disposed to face the first substrate, and a non-display area of the first substrate; and a black column spacer disposed on a portion of one surface of the second substrate in a corresponding region.

Here, the color layer may include a first color layer disposed on the driving circuit unit and a second color layer disposed on the first color layer. In addition, the first and second color layers may be red, green, or blue color layers, and the second color layer may be formed of a color layer having a color different from that of the first color layer.

One side of the black seal overlapping the color layer may be disposed in contact with one side of the black column spacer. Also, the black seal may be disposed to be spaced apart from the black column spacer.

In the liquid crystal display device and the method for manufacturing the same according to the present invention, a double-layered color layer and a black seal are overlapped on a first substrate in the non-display area to prevent light leakage in the non-display area. In addition, in the step of curing the black seal material, by allowing UV light to pass through the second substrate and reach the black seal, the width of the driving circuit unit disposed on the first substrate may be reduced. Through this, there is an effect that the liquid crystal display device can implement a narrow bezel.

1 is a diagram schematically showing a liquid crystal display device according to a first embodiment of the present invention.
2 is a plan view of a liquid crystal display according to a first embodiment of the present invention.
3 is a view showing a cross-sectional view taken along line I-I' of the liquid crystal display according to the first embodiment of the present invention.
4 is a cross-sectional view illustrating a liquid crystal display device according to a second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The embodiments introduced below are provided as examples so that the spirit of the present invention can be sufficiently conveyed to those skilled in the art. Accordingly, the present invention is not limited to the embodiments described below and may be embodied in other forms. And in the drawings, the size and thickness of the device may be exaggerated for convenience. Like reference numerals refer to like elements throughout.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout. The sizes and relative sizes of layers and regions in the drawings may be exaggerated for clarity of description.

Reference to an element or layer to another element or “on” or “on” includes not only directly on the other element or layer, but also with other layers or other elements interposed therebetween. do. On the other hand, reference to an element "directly on" or "directly on" indicates that there are no intervening elements or layers.

Spatially relative terms "below, beneath", "lower", "above", "upper", etc. are one element or component as shown in the drawings. and can be used to easily describe the correlation with other devices or components. The spatially relative terms should be understood as terms including different orientations of the device during use or operation in addition to the orientation shown in the drawings. For example, if an element shown in the figures is turned over, an element described as "beneath" or "beneath" another element may be placed "above" the other element. Accordingly, the exemplary term “below” may include both directions below and above.

The terminology used herein is for the purpose of describing the embodiments, and thus is not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprise” and/or “comprising” refers to the presence of one or more other components, steps, operations and/or elements mentioned. or addition is not excluded.

1 is a diagram schematically showing a liquid crystal display device according to a first embodiment of the present invention. Referring to FIG. 1 , a liquid crystal display according to a first embodiment of the present invention includes a first substrate 100 and a second substrate disposed to face the first substrate 100 , and the first substrate ( A liquid crystal layer may be interposed between 100) and the second substrate.

The liquid crystal display may be divided into a display area AA and a non-display area NA surrounding an edge of the display area AA. The display area AA includes sub-pixels arranged in a matrix form by an intersecting structure of data lines and gate lines. Each of the sub-pixels may include a liquid crystal cell.

In this case, the driving method of the liquid crystal display may be a vertical electric field driving method or a horizontal electric field driving method. For example, the driving method of the liquid crystal display device is a vertical electric field driving method such as a twisted nematic (TN) mode and a vertical alignment (VA) mode, or an in plane switching (IPS) mode and a fringe field switching (FFS) mode. It may be a horizontal electric field driving method. However, the driving method of the liquid crystal display according to the present invention is not limited thereto, and any driving method to which the present invention can be applied is sufficient.

In addition, the non-display area NA includes a driving circuit unit in which a driving circuit such as a gate driver is mounted. The driving circuit unit may be disposed on the first substrate 100 in the non-display area NA.

That is, the liquid crystal display device may be a gate in panel (GIP) type liquid crystal display device by mounting a gate driver in a liquid crystal panel. Although not shown in the drawings, the driving circuit part may further include a control signal part disposed adjacent to the gate driver and a ground part disposed adjacent to the control signal part.

An opaque insulating material is disposed on one surface of the second substrate so that the non-display area NA of the liquid crystal display is not visible to the viewer. In this case, the opaque insulating material may be a black column spacer. The black column spacer may be disposed on the entire surface of the second substrate. In addition, a seal pattern is disposed between the first and second substrates to prevent leakage of liquid crystals.

The seal pattern may be made of a transparent material having a property of being cured by UV light. In order to cure the seal pattern material, UV light is irradiated to pass through the first substrate to reach the seal pattern material.

At this time, a path through which the UV light can pass is formed by forming the metal wires of the driving circuit part disposed on the first substrate to be spaced apart from each other so that the UV light easily reaches the seal pattern material. . As described above, by arranging the metal wires to be spaced apart, the width of the driving circuit portion is increased. In detail, the width of the ground portion is increased by arranging the metal wires disposed on the ground portion of the driving circuit portion apart from each other. For this reason, there is a problem in that the bezel size of the liquid crystal display device increases.

To solve this problem, the liquid crystal display device according to the present invention includes a color layer and a black seal 300 disposed on the driving circuit unit in the non-display area NA. That is, in the non-display area NA, the color layer may be disposed to overlap the black seal 300 .

In detail, a driving circuit unit including a ground unit, a control signal unit, and a gate driver is disposed on the non-display area NA of the first substrate 100 . A color layer is disposed on the driving circuit unit. Here, the color layer may be formed of a double layer. A black seal 300 is disposed on the color layer. By disposing the black seal 300 on the double color layer, it is possible to effectively prevent light leakage in the non-display area NA.

The black seal 300 may be disposed to extend to one surface of the second substrate. That is, the black seal 300 is disposed in contact with one surface of the second substrate facing the first substrate 100 . Through this, it is possible to prevent the liquid crystal disposed between the first substrate and the second substrate from leaking.

A black column spacer is disposed in a region where one surface of the second substrate and the black seal 300 do not contact each other. In this case, the black column spacer and the black seal 300 may be disposed to be spaced apart from each other.

Since the upper surface of the black seal 300 is disposed in contact with the second substrate, UV light may be irradiated to pass through the second substrate during curing of the black seal 300 material. That is, since the black seal 300 is not disposed to overlap the black column spacer, UV light may be irradiated to pass through the second substrate.

In detail, in the step of curing the black seal 300 material disposed between the first substrate 100 and the second substrate, UV light passes through the second substrate to reach the black seal 300 material. can do. Through this, the metal wires of the ground portion disposed on the first substrate 100 may not be formed to be spaced apart from each other.

That is, since the metal wirings of the driving circuit unit are not formed to be spaced apart, the width of the driving circuit unit may be reduced. Through this, there is an effect that the size of the bezel of the liquid crystal display can be reduced. This is as follows when looking through a plan view of the liquid crystal display according to the first embodiment of the present invention.

2 is a plan view of a liquid crystal display according to a first embodiment of the present invention. Referring to FIG. 2 , the liquid crystal display according to the first embodiment of the present invention includes a plurality of sub-pixel areas. The sub-pixel area may be a red sub-pixel area, a green sub-pixel area, or a blue sub-pixel area.

The sub-pixel region is defined by crossing a gate line 118 and a data line 119 . A driver including a thin film transistor Tr is disposed in a region where the gate line 118 and the data line 119 intersect, and a pixel portion is disposed above the driver. In detail, a thin film transistor Tr is provided at each intersection of the gate line 118 and the data line 119 to be connected to the pixel electrode 110 disposed in each sub-pixel region in a one-to-one correspondence.

The thin film transistor Tr includes a gate electrode 101 , a semiconductor layer 103 , a source electrode 104 , and a drain electrode 105 . In addition, the pixel electrode 110 may have a bent structure to secure a viewing angle. That is, one pixel may have a two-domain structure.

Through this, the vertically aligned liquid crystal molecules may be inclined in advance, and the liquid crystal molecules may be more inclined in the inclined direction when a voltage is applied. However, the shape of the pixel electrode 110 is not limited thereto, and may have a multi-domain structure such as 4-domain or 8-domain.

In addition, the plurality of gate lines 118 extending to the non-display area are connected to the gate pad unit 150 in the non-display area. In addition, the plurality of data lines 119 extending to the non-display area are connected to the data pad unit 140 in the non-display area.

The gate pad unit 150 includes a driving circuit unit (not shown). The driving circuit unit (not shown) includes a gate driver (not shown), a control signal unit (not shown), and a ground unit (not shown). In addition, the gate pad unit 150 includes a color layer disposed on the front surface of the driving circuit unit (not shown) and a black seal disposed on the color layer.

In addition, a black column spacer may be further disposed in the non-display area to face the gate pad unit 150 so that the non-display area is not visible to a viewer. In this case, the black column spacer and the black seal may be disposed to be spaced apart from each other.

Accordingly, in the non-display area NA, the non-display area NA may not be visible to the viewer due to the black column spacer in the area where the black column spacer is disposed. In addition, since the color layer and the black seal 300 are overlapped in an area where the black column spacer is not disposed in the non-display area NA, the non-display area NA may be invisible to a viewer. there is This will be described with reference to FIG. 3, which is a cross-sectional view taken along I-I'.

3 is a view showing a cross-sectional view taken along line I-I' of the liquid crystal display according to the first embodiment of the present invention. Referring to FIG. 3 , the liquid crystal display according to the first embodiment of the present invention may have a color filter on TFT (COT) structure in which a color filter layer 108 is disposed on a thin film transistor Tr.

In detail, in the display area AA of the liquid crystal display, the thin film transistor Tr is disposed on the first substrate 100 , and the color filter layer 108 is disposed on the thin film transistor. In addition, a pixel electrode 110 electrically connected to the thin film transistor Tr is further included. In addition, a second substrate 200 disposed to face the first substrate 100 and a liquid crystal layer disposed between the first substrate 100 and the second substrate 200 are included.

In the non-display area NA of the liquid crystal display, a driving circuit unit 160 is disposed on the first substrate 100 , and a color layer 172 is disposed on the driving circuit unit 160 . In addition, the non-display area NA includes the black seal 300 disposed to overlap the color layer 172 .

In more detail, the gate electrode 101 is disposed on the first substrate 100 in the display area AA of the liquid crystal display. The substrate 100 may be made of silicon (Si), glass, plastic, polyimide (PI), or the like. In addition, the gate electrode 101 may be an alloy formed of copper (Cu), molybdenum (Mo), aluminum (Al), silver (Ag), titanium (Ti), tantalum (Ta), or a combination thereof. Although it is formed as a single metal layer in the drawings, it may be formed by stacking at least two or more metal layers in some cases.

A gate insulating layer 102 is disposed on the entire surface of the first substrate 100 including the gate electrode 101 . In addition, the gate insulating layer 102 _{may be formed of a dielectric such as SiOx, SiNx, SiON, HfO 2} , Al ₂ O ₃ , Y ₂ O ₃ , Ta ₂ O ₅ , or a high-k dielectric, or a combination thereof. Although the gate insulating layer 102 is formed as a single layer in the drawing, it may be formed as a multilayer formed of two or more layers.

An active layer 103 overlapping the gate electrode 101 is disposed on the gate insulating layer 102 . The active layer 103 may be selected as an oxide semiconductor of AxByCzO (x, y, z ≥ 0), which is known to have high mobility and stable constant current characteristics. In this case, each of A, B and C is selected from Zn, Cd, Ga, In, Sn, Hf and Zr. Preferably, the active layer 103 may be selected from ZnO, InGaZnO ₄ , ZnInO, ZnSnO, InZnHfO, SnInO and SnO, but the active layer 103 is not limited thereto and may be made of an amorphous silicon semiconductor.

Also, although not shown in the drawings, an etch stop layer may be disposed on the active layer 103 . The etch stop layer is disposed in a region overlapping the gate electrode 101 on the active layer 103 , and defines a channel region of the active layer 103 . The etch stop layer may be disposed in a region overlapping the gate electrode 101 and may be disposed in a region overlapping the gate line. In addition, it may be disposed only in a region overlapping the gate electrode 101 and the gate line.

A source electrode 104 and a drain electrode 105 are disposed overlapping the active layer 103 . The source electrode 104 and the drain electrode 105 are spaced apart from each other. The source electrode 104 and the drain electrode 105 are alloys formed from copper (Cu), molybdenum (Mo), aluminum (Al), silver (Ag), titanium (Ti), tantalum (Ta), or a combination thereof. can be Although it is formed as a single metal layer in the drawings, it may be formed by stacking at least two or more metal layers in some cases.

In addition, although not shown in the drawings, an ohmic contact layer disposed to overlap the source electrode 104 and the drain electrode 105 may be further included under the source electrode 104 and the drain electrode 105 . That is, the ohmic contact layer may be disposed on the active layer 103 to be spaced apart from each other. As described above, the thin film transistor Tr is disposed on the first substrate 100 .

A passivation layer 106 is disposed on the thin film transistor Tr. In addition, a color filter layer 108 may be disposed on the passivation layer 106 . The color filter layer 108 may include a red color filter pattern (R), a green color filter pattern (not shown), and a blue color filter pattern (B), but the color filter layer 108 of the present invention is not limited thereto. .

In addition, the black matrix 107 may be disposed on the thin film transistor Tr to block the light coming from the lower portion of the first substrate 100 . The black matrix 107 may be disposed between each color filter pattern.

A planarization layer 109 is disposed on the black matrix 107 and the color filter layer 108 . The planarization layer 109 and the passivation layer 106 may include a contact hole exposing the drain electrode 105 of the thin film transistor Tr. In addition, if necessary, the color filter layer 109 or the black matrix 107 may be etched to form a contact hole to expose the drain electrode 105 .

A pixel electrode 110 connected to the drain electrode 105 of the thin film transistor Tr through the contact hole is disposed on the planarization layer 109 . The pixel electrode 110 may be made of Indium Tim Oxide (ITO) or Indium Zinc Oxide (IZO), but the pixel electrode 110 according to the present invention is not limited thereto, and may be made of any one selected from transparent conductive materials. .

Also, although not shown in the drawings, column spacers for maintaining a gap between the first substrate 100 and the second substrate 200 in the display area AA may be further disposed. That is, the first substrate 100 and the second substrate 200 may be disposed to be spaced apart from each other by a predetermined interval through the column spacer.

A driving circuit unit 160 is disposed on the first substrate 100 in the non-display area NA of the liquid crystal display. The driving circuit unit 160 includes a gate driver GIP, a control signal unit CLK, and a ground unit GND. However, the structure of the driving circuit unit 160 is not limited thereto, and in the case of liquid crystal driving in the horizontal direction by a horizontal electric field according to the driving method of the liquid crystal of the liquid crystal display device, Vcom (common voltage wiring pole) is the driving circuit unit 160 ) may be further provided.

A color layer 172 is disposed on the driving circuit unit 160 . The color layer 172 may be configured as a double layer. In detail, the color layer 172 may include a first color layer 170 disposed on the driving circuit unit 160 and a second color layer 171 disposed on the first color layer 170 . .

In this case, the first color layer 170 may be any one of red, green, and blue color layers. In addition, the second color layer 171 may be any one of red, green, or blue color layers, and may be a color layer having a different color from that of the first color layer 170 . For example, when the first color layer 170 is a red color layer, the second color layer 171 may be a green or blue color layer. In addition, when the first color layer 170 is a green color layer, the second color layer 171 may be a red or blue color layer. When the first color layer 170 is a blue color layer, the second color layer 171 is a blue color layer. The color layer 171 may be a red or green color layer. A planarization layer 109 may be disposed on the second color layer 171 .

In addition, the non-display area NA includes a black seal 300 disposed on the planarization layer 109 . The black seal 300 may be disposed on a portion of the top surface of the planarization layer 109 . In addition, the black seal 300 may be disposed to extend to the second substrate 200 . That is, the black seal 300 may be disposed to contact one surface of the second substrate 200 .

A black column spacer 210 may be disposed on one surface of the second substrate 200 disposed to face the first substrate 100 in the non-display area NA. In this case, the black column spacer 210 may be disposed only on a part of the second substrate 200 .

The black seal 300 may be disposed in contact with the second substrate 200 in a portion of an area where the black column spacer 210 is not disposed of the second substrate 200 . In this case, the black column spacer 210 and the black seal 300 may be disposed to be spaced apart from each other. Through this, the process of curing the material of the black seal 300 may be easily performed.

In this case, the separation distance between the black column spacer 210 and the black seal 300 may be 1000 μm or less. When the black column spacer 210 and the black seal 300 overlap, the material of the black seal 300 may not be cured. In addition, when the separation distance exceeds 1000 μm, light leakage may occur in the non-display area NA.

Also, the black seal 300 may be disposed to be spaced apart from one end of the second substrate 200 in the non-display area NA. In this case, the separation distance between the black seal 300 and one end of the second substrate 200 may be 1000 μm or less. Through this, in the step of bonding the first substrate 100 and the second substrate 200 on which the black seal 300 material is disposed, the black seal 300 material spreads outside the non-display area NA. phenomenon can be prevented.

In the areas A and B where the black column spacer 210 or the black seal 300 is not disposed, due to the color layer 172 disposed on the first substrate 100 , light leakage may not occur. In detail, in the areas A and B where the black column spacer 210 or the black seal 300 is not disposed, the light leakage phenomenon may be prevented through the light blocking effect due to the double-layered color layer 172 .

In particular, when the color layer 172 is formed of a single layer, the color of the color layer 172 may be visually recognized in the areas A and B where the black seal 300 is not disposed. By using the color layer 172 , the light blocking effect of the areas A and B where the black seal 300 is not disposed can be increased. In addition, since the color layers 172 of the double layer have different colors, it is possible to prevent a color from being recognized in the non-display area NA and to obtain a light blocking effect.

In the liquid crystal display according to the first embodiment of the present invention, the black seal 300 is disposed so as to be in contact with the second substrate 200, so that in the step of curing the material of the black seal 300, UV light is emitted to the second substrate ( By allowing it to pass through 200 to reach the black seal 300 , the width of the driving circuit unit 160 disposed on the first substrate 100 may be reduced. In addition, since the color layer 172 disposed on the first substrate 100 is formed of a double layer, light leakage occurs in the areas A and B where the black column spacer 210 or the black seal 300 is not disposed. it can be prevented

In addition, in the liquid crystal display according to the first embodiment of the present invention, a light leakage phenomenon occurring on the non-display area NA in the COT structure in which the black matrix 107 for preventing light leakage is disposed on the first substrate 100 . has the effect of preventing

Next, referring to FIG. 4 , a liquid crystal display device according to a second embodiment of the present invention will be described as follows. 4 is a cross-sectional view illustrating a liquid crystal display device according to a second embodiment of the present invention. The liquid crystal display device according to the second embodiment of the present invention may include the same and similar configuration as the liquid crystal display device according to the above-described embodiments. Descriptions of the same and similar parts as those of the liquid crystal display according to the embodiments of the present invention described above may be omitted. The same reference numerals are assigned to the same components.

Referring to FIG. 4 , the liquid crystal display according to the second embodiment of the present invention may have a color filter on TFT (COT) structure in which a color filter layer 108 is disposed on a thin film transistor Tr. In detail, in the display area AA of the liquid crystal display, a thin film transistor including a gate electrode 101 , an active layer 103 , a source electrode 104 , and a drain electrode 105 on a first substrate 100 . (Tr) is disposed, and a color filter layer 108 is disposed on the thin film transistor.

A pixel electrode 110 electrically connected to the drain electrode 105 of the thin film transistor Tr is disposed on the first substrate 100 . In addition, a second substrate 200 disposed to face the first substrate 100 and a liquid crystal layer disposed between the first substrate 100 and the second substrate 200 are included.

A driving circuit unit 160 including a gate driver GIP, a control signal unit CLK, and a ground unit GND is disposed on the first substrate 100 in the non-display area NA of the liquid crystal display device. . A color layer 172 made of a double layer is disposed on the driving circuit unit 160 . The color layer 172 may include a first color layer 170 disposed on the driving circuit unit 160 and a second color layer 171 disposed on the first color layer 170 .

The first color layer 170 and the second color layer 171 are made of any one of red, green, and blue color layers, and the second color layer 171 is different from the first color layer 170 . It may be formed of a colored layer of color.

A planarization layer 109 for planarizing the first substrate 100 is disposed on the second color layer 171 . A black seal 301 is disposed on a portion of the top surface of the planarization layer 109 . The black seal 301 may be disposed to extend to one surface of the second substrate 200 .

A black column spacer 210 may be disposed on one surface of the second substrate 200 disposed to face the first substrate 100 in the non-display area NA. In this case, the black column spacer 210 may be disposed only on a part of the second substrate 200 . Accordingly, the non-display area NA is not visible to the viewer due to the black column spacer 210 in the area where the black column spacer 210 is disposed in the non-display area NA.

The black seal 300 may be in contact with the second substrate 200 in an area where the black column spacer 210 is not disposed of the second substrate 200 . In this case, one side of the black column spacer 210 and one side of the black seal 301 may be in contact with each other.

Through this, in the step of curing the black seal 301 material formed on the first substrate 100, UV light passes through the second substrate 200 to reach the black seal 301 material, The black seal 301 material may be cured. That is, since the UV light is not irradiated to pass through the first substrate 100 , the metal wires disposed on the first substrate 100 may not be formed to be spaced apart from each other. Accordingly, there is an effect of reducing the bezel size of the liquid crystal display device.

In the region C where the black column spacer 210 is not disposed, the black seal 301 and the double-layered color layer 172 may be disposed to overlap each other. Through the black seal 301 and the double-layered color layer 172 , light leakage does not occur even in the area C where the black column spacer 210 is not disposed in the non-display area NA.

In the liquid crystal display according to the second embodiment of the present invention, the color layer 172 and the black seal 301 on the first substrate 100 are included in a partial area of the non-display area NA, so that the non-display area NA is included. ) can effectively prevent light leakage. That is, by overlapping the color layer 172 and the black seal 301 , there is an effect of increasing the light blocking effect in the area where the black column spacer 210 is not disposed.

In addition, since the black seal 301 is placed in contact with the second substrate 200 , in the step of curing the black seal 301 material, UV light passes through the second substrate 200 to the black seal 301 . By making it reach, the width of the driving circuit unit 160 disposed on the first substrate 100 may be reduced. Through this, the liquid crystal display device may implement a narrow bezel.

In addition, in the liquid crystal display according to the second embodiment of the present invention, a light leakage phenomenon occurring on the non-display area NA in the COT structure in which the black matrix 107 for preventing light leakage is disposed on the first substrate 100 . has the effect of preventing

Features, structures, effects, etc. described in the above-described embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to one embodiment. Furthermore, features, structures, effects, etc. illustrated in each embodiment can be combined or modified for other embodiments by those of ordinary skill in the art to which the embodiments belong. Accordingly, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

In addition, although the embodiments have been mainly described above, these are merely examples and do not limit the present invention, and those of ordinary skill in the art to which the present invention pertains are exemplified above in a range that does not depart from the essential characteristics of the present embodiment. It can be seen that various modifications and applications that have not been made are possible. For example, each component specifically shown in the embodiments may be implemented by modification. And the differences related to these modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

100: first substrate
107: Black Matrix
108: color filter layer
160: driving circuit unit
170: first color layer
171: second color layer
172: color layer
210: black column spacer
300: black seal (seal)

Claims (14)

a first substrate divided into a display area and a non-display area and a second substrate facing the first substrate;
a driving circuit unit disposed in the non-display area on the first substrate and including a ground unit;
a color layer disposed to cover the driving circuit part of the non-display area;
a planarization layer disposed on the color layer;
a black column spacer disposed on the second substrate to face the planarization layer; and
a black seal disposed between the second substrate in which the black column spacer is opened and the planarization layer; includes,
The black seal is disposed to overlap the second substrate having the black column spacer opened, the ground portion of the first substrate, and the color layer covering the ground portion.
The method of claim 1,
The color layer includes a first color layer disposed on the driving circuit part to cover the driving circuit part and a second color layer disposed on the first color layer.
3. The method of claim 2,
The first color layer and the second color layer are formed of any one of red, green, and blue color layers, and the second color layer is formed of a color layer having a color different from that of the first color layer.
The method of claim 1,
The black seal and the black column spacer are disposed to be spaced apart from each other.
5. The method of claim 4,
A distance between the black seal and the black column spacer is 1000 μm or less.
The method of claim 1,
One side of the black seal is in contact with one side of the black column spacer.
The method of claim 1,
The black seal is disposed to be spaced apart from one end of the second substrate.
The method of claim 1,
The liquid crystal display device comprising a color filter on TFT (COT) structure.
a first substrate divided into a display area and a non-display area, and a first substrate in which a black column spacer is formed so as to be disposed in a portion of an area corresponding to the non-display area of the first substrate on one surface of the second substrate facing the first substrate 2 preparing a substrate;
forming a driving circuit unit including a ground unit in the non-display area on the first substrate;
forming a color layer disposed in the non-display area and disposed to cover the driving circuit unit;
forming a planarization layer disposed on the color layer;
forming a black seal material on the planarization layer to overlap the ground portion and the color layer covering the ground portion;
bonding the first substrate and the second substrate such that the black seal material is in contact with the second substrate in which the black column spacer is opened; and
and curing the black seal material by irradiating UV light to the black seal material to pass through the second substrate.
delete 10. The method of claim 9,
The method of manufacturing a liquid crystal display device in which the UV light is not irradiated through the first substrate.
The method of claim 1,
The driving circuit unit further includes a gate driver and a control signal unit.
7. The method according to claim 4 or 6,
the black seal and the black column spacer are disposed on the same plane with respect to one surface of the second substrate;
and an area where the black seal and the black column spacer are not disposed among the area of the second substrate corresponding to the non-display area to overlap the color layer.
The method of claim 1,
The black seal extends from the first substrate toward the second substrate and is disposed to contact the second substrate in which the black column spacer is opened.

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