KR20090015437A

KR20090015437A - Liquide crystal display device and method for fabricating the same

Info

Publication number: KR20090015437A
Application number: KR1020070079750A
Authority: KR
Inventors: 정성수
Original assignee: 엘지디스플레이 주식회사
Priority date: 2007-08-08
Filing date: 2007-08-08
Publication date: 2009-02-12

Abstract

A liquid crystal display device and a manufacturing method thereof are provided to maintain the gap between a color filter substrate and a thin film transistor array substrate effectively. A liquid crystal display device comprises the followings: the first substrate(101) and the second substrate(102) in which an active area and a seal area are defined; a plurality of red, green and blue cooler filters(106) formed in the active area on the first substrate; the first column spacer maintaining the interval between the first and second substrates(103b); the second column spacer maintaining the interval between the first and second substrates(103a); and an assistant layer which is simultaneously made of the same material as that of at least one of the color filters(104) to maintain the interval between the first and second substrates.

Description

Liquid crystal display and its manufacturing method {LIQUIDE CRYSTAL DISPLAY DEVICE AND METHOD FOR FABRICATING THE SAME}

The present invention relates to a liquid crystal display device, which can compensate for the shortcomings of the ball spacer or glass fiber used in the sealing material to maintain the gap between the color filter substrate and the thin film transistor array substrate after the manufacturing process or completion of the manufacturing process. The present invention relates to a liquid crystal display device and a method of manufacturing the same, which can effectively maintain a predetermined distance between a color filter substrate and a thin film transistor array substrate and minimize manufacturing costs.

BACKGROUND ART In general, liquid crystal display devices have tended to be gradually widened due to their light weight, thinness, and low power consumption. Accordingly, the liquid crystal display device is widely used as a portable computer such as a notebook PC, office automation equipment, audio / video equipment, and the like.

In general, the liquid crystal display device displays a desired image on a screen by adjusting the amount of light transmitted according to image signals applied to a plurality of control switching elements arranged in a matrix.

The liquid crystal display device includes a liquid crystal panel for displaying an image and a driver for driving the liquid crystal panel by supplying scan signals and image information to the liquid crystal panel.

The liquid crystal panel may face a color filter substrate, which is an upper substrate, and a thin film transistor array substrate, which is a lower substrate, to face each other at predetermined intervals. The liquid crystal layer is formed in between.

The color filter substrate and the thin film transistor array substrate are bonded to each other by a sealant formed between the color filter substrate and the thin film transistor array substrate, and column spacers or ball spacers are provided in an active region where a screen is displayed, so that the two substrates may be fixed. Spacing is maintained.

In the liquid crystal panel, a gap between the color filter substrate and the thin film transistor array substrate may be uniformly formed by forming a seal material between the color filter substrate and the thin film transistor array substrate during manufacture and then uniformly thicknessing the seal material during curing. In order to maintain, there is a tendency to use a ball spacer or glass fiber inside the seal material.

A conventional liquid crystal display having such a configuration will be described with reference to FIGS. 1 and 2 as follows.

As shown in FIG. 1, a conventional liquid crystal display device includes a first substrate 1 and a second substrate 2 in which an active region AA and a seal region SA are defined; A plurality of red, green, and blue color filters (6) formed in the active area (AA) on the first substrate (1); A black matrix (5) formed in an area between the red, green, and blue color filters (6) and the seal area (SA) on the first substrate (1); A plurality of switching elements formed in the active area AA on the second substrate 2; A column spacer 3 formed in the active region AA of the first substrate 1 and disposed between the color filter 6 and the switching element; It is formed in the seal area SA on the first substrate 1 and the second substrate 2 to bond the first substrate 1 and the second substrate 2, and the ball spacer 12 is filled therein. Seal material (7); It is configured to include.

In addition, another conventional liquid crystal display device as shown in FIG. 2 includes: a first substrate 21 and a second substrate 22 in which an active area AA and a seal area SA are defined; A plurality of red, green, and blue color filters 26 formed in the active area AA on the first substrate 21; A black matrix 25 formed between an area between the red, green, and blue color filters 26 on the first substrate 21 and a seal area SA; A plurality of switching elements formed in the active area AA on the second substrate 22; Ball spacers 23 dispersed in the active region AA on the first and second substrates 21 and 22; It is formed in the seal area SA on the first substrate 21 and the second substrate 22 to bond the first substrate 21 and the second substrate 22, and the glass fiber 32 is filled therein. Seal material 27; It is configured to include.

The size of the ball spacer 12 or the glass fiber 32 included in the seal materials 7 and 27 formed in the conventional general liquid crystal display device having the above configuration is the color filter substrates 15 and 35 of the liquid crystal panel. ) And the thin film transistor array substrates 16 and 36 may have different designs. That is, the size of the ball spacer 12 or the glass fiber 32 filled in the seal member (7, 27) has a disadvantage that must be designed and applied differently depending on the model of the liquid crystal display device.

In the process of manufacturing a conventional liquid crystal display having the above-described configuration, the seal member 7 is formed to manufacture the seal members 7 and 27 filled with the ball spacer 12 and the glass fiber 32. , 27) and the ball spacer 12 or the glass fiber 32 in the operation of mixing the bubbles formed in the seal member (7, 27) has the disadvantage that the additional work should be made.

Then, the ball spacer 12 and the glass fiber 32 in the seal material (7, 27) in the process of mixing the seal material (7, 27) and the ball spacer 12 or the glass fiber 32 as described above Since it is not uniformly distributed, when the color filter substrates 15 and 35 and the thin film transistor array substrates 16 and 36 are bonded to each other using the seal materials 7 and 27, the distance between the two substrates is not constant. There is a problem that spots are observed on the displayed screen.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to simultaneously form column spacers in an active region and a seal region of a color filter substrate, and to form a color between the column spacer formed in the seal region and the color filter substrate. By providing an auxiliary layer formed at the same time as the color filter with the same material as the filter, it is possible to effectively maintain the gap between the color filter substrate and the thin film transistor array substrate, and at the same time to minimize the manufacturing cost and to provide a liquid crystal display device .

According to an exemplary embodiment of the present invention, a liquid crystal display device includes: a first substrate and a second substrate on which an active region and a seal region are defined; A plurality of red, green, and blue color filters formed in the active region on the first substrate; A first column spacer formed in an active region of any one of the first substrate and the second substrate to maintain a distance between the first substrate and the second substrate; A second column spacer formed in a seal region of one of the first substrate and the second substrate to maintain a distance between the first substrate and the second substrate; An auxiliary layer formed between the second column spacer formed in the seal region and the first substrate and formed of the same material as at least one of the red, green, and blue color filters to maintain a gap between the first substrate and the second substrate; ; It is configured to include.

In addition, a method of manufacturing a liquid crystal display according to a preferred embodiment of the present invention for achieving the above object comprises the steps of preparing a first substrate; Forming a black matrix on the first substrate to define an active region and a seal region; A red, green, and blue color filter is formed in an active region of the first substrate on which a black matrix is formed, and at the same time, an auxiliary material made of at least one of the red, green, and blue color filters is formed in a seal region of the first substrate. Forming a layer; Forming a second column spacer overlapping the auxiliary layer of the seal region of the first substrate and a first column spacer overlapping the black matrix of the active region of the first substrate; It is made, including.

In the liquid crystal display according to the present invention having the above-described configuration and manufacturing method, the first and second column spacers are simultaneously formed in each of the active region and the seal region of the color filter substrate, and the second column spacer formed in the seal region. By providing an auxiliary layer formed simultaneously with the color filter with the same material as the color filter between the and the color filter substrate, filling the ball spacer or glass fiber in the seal material and removing the bubbles formed in the seal material Since it does not have to be made, it is possible to reduce the manufacturing cost of the liquid crystal display device and to minimize the manufacturing time.

As described above, the auxiliary layer formed between the second column spacer formed in the seal region and the color filter substrate may have a red color filter depending on the distance between the color filter substrate and the thin film transistor array substrate during the manufacturing process of the liquid crystal display. It is formed through an appropriate design so that at least one of the green color filter and the blue color filter is formed of the same material at the same time, the manufacturing process is simple, thereby minimizing the manufacturing time of the liquid crystal display.

In addition, since the second column spacer and the auxiliary layer positioned inside the seal member formed in the liquid crystal display according to the present invention are formed through a lamination method rather than being spread, a second column formed in the seal region of the color filter substrate. It is easy to form the spacer and the auxiliary layer extending to the second column spacer to have a uniform distribution. Therefore, the sealing material formed in the seal region between the color filter substrate and the thin film transistor array substrate while covering the second column spacer and the auxiliary layer having the uniform distribution as described above is uniformly spaced in contact with the color filter substrate. Since it is repeated, the adhesive force is maximized to maintain a constant distance between the color filter substrate and the thin film transistor array substrate, thereby increasing the screen quality.

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

First, a configuration of the liquid crystal display according to the present invention will be described with reference to FIGS. 3 and 4.

3 and 4, the liquid crystal display according to the present invention includes: a first substrate 101 and a second substrate 102 in which an active area AA and a seal area SA are defined; A plurality of red, green, and blue color filters 106a, 106b, and 106c formed in the active area AA on the first substrate 101; A first column spacer formed in the active region AA of any one of the first substrate 101 and the second substrate 102 to maintain a distance between the first substrate 101 and the second substrate 102; 103b); A second column spacer formed in the seal area SA of one of the first substrate 101 and the second substrate 102 to maintain a distance between the first substrate 101 and the second substrate 102; 103a); It is formed between the second column spacer 103a formed in the seal area SA and the first substrate 101, and is formed of the same material as at least one of the red, green, and blue color filters 106a, 106b, and 106c. An auxiliary layer 104 formed to maintain a gap between the first substrate 101 and the second substrate 102; It is configured to include.

As shown in FIG. 3, the liquid crystal display according to the present invention includes a color filter substrate 115 as an upper substrate and a thin film transistor array substrate 116 as a lower substrate, and the color filter substrate 115 and the thin film transistor array. The liquid crystal layer 117 is formed between the substrates 116.

The color filter substrate 115 and the thin film transistor array substrate 116 have a seal area SA in which an active area AA on which a screen is displayed and a seal material 107 joining the two substrates 115 and 116 are located. Is defined.

The color filter substrate 115 includes a color filter 106 and a black matrix 105, a first column spacer 103b, a second column spacer 103a, and an auxiliary member on a first substrate 101 that is a transparent substrate. The layer 104 is located, in particular, the first column spacer 103b and the second column spacer 103a are evenly distributed in the active area AA and the seal area SA of the color filter substrate 115. The second column spacer 103a formed in the seal region SA of 115 extends from the auxiliary layer 104. This will be described in detail below.

Although not shown in detail in the drawing, the thin film transistor array substrate 116 includes a gate line (not shown) and a data line (not shown) that cross each other vertically and horizontally on a second substrate 102 that is a transparent substrate to define pixels. Each pixel includes a switching element connected to a gate line and a data line. The switching element is a thin film transistor, and includes a gate electrode 108 connected to a gate line, a source electrode 109 connected to a data line, and a drain electrode 110 connected to the pixel electrode 110 through a contact hole. . The switching element includes a gate insulating film 112 for insulating the gate electrode 108, the source electrode 109, and the drain electrode 110, and a source electrode 109 by a scan signal supplied to the gate electrode 108. ) And a semiconductor layer 113 for forming a conductive channel between the drain electrode 110 and the drain electrode 110, and a protective layer 114 for protecting the switching element.

As shown in FIGS. 3 and 4, the red, green, and blue color filters 106a, 106b, and 106c formed on the color filter substrate 115 may be formed using a first substrate (eg, a red, green, or blue color resin). It is formed in the active region AA of the 101. The color filter 106 first forms a red color filter 106a in a desired area by first applying a red color resin to the first substrate 101 and then selectively exposing the color resin 106b. Then, the green and blue color filters 106b are formed. , 106c) in the same manner as the red color filter 106a.

3 and 4, the first substrate 101 including an area between the red, green, and blue color filters 106a, 106b, and 106c formed in the active area AA of the first substrate 101. The black matrix 105 is formed in the seal area SA on the (). The black matrix 105 prevents optical interference between the red, green, and blue color filters 106a, 106b, and 106c, and simultaneously transmits the light to the region in which the thin film transistor is formed or the seal region SA in which the sealing material 107 is formed. This prevents leakage.

Referring to FIG. 3, in the active area AA and the seal area SA on the first substrate 101, a plurality of first columns that maintain a gap between the first substrate 101 and the second substrate 102. The spacer 103b and the second column spacer 103a are formed.

Among the first column spacer 103b and the second column spacer 103a formed on the first substrate 101, the first column spacer 103b formed in the active area AA is a color filter on the first substrate 101. Located between the 106 and the switching element on the second substrate 102 to maintain a gap between the first substrate 101 and the second substrate 102. The second column spacer 103a formed in the seal area SA among the first column spacer 103b and the second column spacer 103a formed on the first substrate 101 may have one end of the auxiliary layer 104. Positioned so as to extend from the top to maintain a spacing between the first substrate 101 and the second substrate 102 together with the auxiliary layer 104.

As such, the first column spacer 103b formed in the active region AA on the first substrate 101 and the second column spacer 103a formed in the seal region SA may be formed of the same material at the time of manufacturing the liquid crystal display. It is formed at the same time to have the same upper and lower thickness. In other words, the first column spacer 103b formed in the active region AA on the first substrate 101 and the second column spacer 103a formed in the seal region SA are color filters formed in the active region AA. The first and second column spacers 103b and second column spacers are formed in the active region AA and the seal region SA of the first substrate 101 having the auxiliary layer 104 formed in the 106 and the seal region SA. It is formed simultaneously by selective exposure after applying the material for forming 103a).

The first column spacer 103b and the second column spacer 103a of the liquid crystal display according to the exemplary embodiment of the present invention are provided on the first substrate 101 of the color filter substrate 115. However, the first column spacer 103b and the second column spacer 103a may be formed on the second substrate 102 of the thin film transistor array substrate 116 as necessary without departing from the scope of the present invention. There will be.

Referring to FIG. 3, in the seal area SA of the first substrate 101, the length of the second column spacer 103a is compensated for in the seal area SA of the first substrate 101 as described above. An auxiliary layer is formed to maintain a gap between the 101 and the second substrate 102.

The auxiliary layer 104 is formed between the second column spacer 103a formed in the seal area SA on the first substrate 101 and the black matrix 105, and the red, green, and blue color filters 106a are formed. And at least one of the same materials as those of the substrates 106b and 106c to maintain a gap between the first substrate 101 and the second substrate 102.

As such, the second column spacer 103a and the auxiliary layer 104 formed in the seal area SA of the first substrate 101 may be formed of the first substrate 101 and the second substrate 102 at the time of manufacturing the liquid crystal display device. While the seal material 107 formed therebetween is hardened, the gap between the first substrate 101 and the second substrate 102 is kept constant, and at the same time, after the completion of the liquid crystal display device, the first substrate ( It serves to keep the gap between 101 and the second substrate 102 constant.

As shown in FIG. 3, the auxiliary layer 104 included in the liquid crystal display according to the present invention includes a first auxiliary layer 104a having the same thickness as the red color filter 106a and a green color filter 106b. Although the second auxiliary layer 104b having the same upper and lower thicknesses as and the third auxiliary layer 104c having the same upper and lower thicknesses as the blue color filter 106c has been exemplified, the present invention is not limited thereto. The auxiliary layer 104 may include a first auxiliary layer 104a according to upper and lower thicknesses of components formed on the color filter substrate 115 included in the liquid crystal display and upper and lower thicknesses of the components formed on the thin film transistor array substrate 116. ) Or only the first auxiliary layer 104a and the second auxiliary layer 104b.

In more detail, in the case of a twisted nematic (TN) mode liquid crystal display device which drives the liquid crystal layer using a vertical electric field formed by the common electrode and the pixel electrode, a common electrode, an alignment layer, etc. are added on the color filter substrate 115. In the case of an in plane switch (IPS) mode liquid crystal display device in which an alignment layer or the like is further formed on the thin film transistor array substrate 116 or the liquid crystal layer is driven using a horizontal electric field formed by the common electrode and the pixel electrode. An overcoat layer, an alignment film, and the like are further formed on the color filter substrate 115 to planarize the surface of the color filter layer, and an alignment film, etc., are formed on the thin film transistor array substrate 116, and a TN mode liquid crystal display and an IPS mode. The alignment layer formed in the liquid crystal display device extends to the seal region SA of the color filter substrate 115 and the thin film transistor array substrate 116. Or the gate insulating layer 112 and the protective layer 114, which form the switching element formed on the thin film transistor array substrate 116, extend to the seal area SA of the thin film transistor array substrate 116. Since the components formed on the 115 and the thin film transistor array substrate 116 may vary depending on the model or case of the liquid crystal display device, the upper and lower thicknesses of the auxiliary layer 104 may be the model or the case of the liquid crystal display device as described above. Depending on the design will be applied differently.

That is, the auxiliary layer 104 included in the liquid crystal display according to the exemplary embodiment of the present invention as shown in FIG. 3 includes the first auxiliary layer 104a formed of the same material as that of the red color filter 106a and the same. The second auxiliary layer 104b formed simultaneously with the same material as the green color filter 106b and the third auxiliary layer 104c formed simultaneously with the same material as the blue color filter 106c are taken as an example. The present invention is not limited thereto, and the auxiliary layer 104 may be formed of only the first auxiliary layer 104a formed of the same material as that of the red color filter 106a or in some cases. The first auxiliary layer 104a formed of the same material as the color filter 106a and the second auxiliary layer 104b formed of the same material as the green color filter 106b may be formed.

In addition, each of the first auxiliary layer 104a, the second auxiliary layer 104b, and the third auxiliary layer 104c constituting the auxiliary layer 104 formed in the liquid crystal display according to the present invention is red, green, and blue color. Although the upper and lower thicknesses are the same as those of the filters 106a, 106b, and 106c, the present invention is not limited thereto, and each of the first and second auxiliary layers 106a, 106b, and 3rd auxiliary layer 106c is not limited thereto. The upper and lower thicknesses of the red, green, and blue color filters 106a and 106b are formed by slitting the regions of the auxiliary layer 104 in the photo mask used in the step of forming the color filter 106 and the auxiliary layer 104. , 106c) may be formed differently from the upper and lower thicknesses.

That is, in forming the color filter 106 and the auxiliary layer 104 in the process of manufacturing the liquid crystal display according to the present invention, it is used in the step of selectively exposing and then applying the color resin on the first substrate 101. When a region corresponding to the auxiliary layer 104 is formed in a slit shape and applied to the photo mask, each of the first auxiliary layer 104a, the second auxiliary layer 104b, and the third auxiliary layer 104c is red, It may be formed to have a thickness different from the upper and lower thicknesses of the green and blue color filters 106a, 106b, and 106c.

3, the seal area SA on the first substrate 101 and the second substrate 102, that is, the seal area SA of the color filter substrate 115 and the thin film transistor array substrate 116 is colored. The seal member 107, which bonds the filter substrate 115 to the thin film transistor array substrate 116, is formed to surround the second column spacer 103a and the auxiliary layer 104.

Hereinafter, a method of manufacturing a liquid crystal display device according to an exemplary embodiment of the present invention will be described with reference to FIGS. 3 to 5F.

First, as shown in FIG. 5A, the first substrate 101 is prepared.

Next, as illustrated in FIG. 5B, a black matrix 105 is formed on the first substrate 101 to define an active region AA and a seal region SA. Here, the black matrix 105 formed in the active region AA on the first substrate 101 is formed at each boundary of the region where the red, green, and blue color filters 106a, 106b, and 106c are to be formed. The black matrix 105 formed in the seal area SA on the substrate 101 is formed in the whole seal area SA including the area in which the seal material 107 is to be formed.

Subsequently, as illustrated in FIG. 5C, a red color filter 106a is formed in the active region AA of the first substrate 101 on which the black matrix 105 is formed, and at the same time, the seal region of the first substrate 101 is formed. A first auxiliary layer 104a made of the same material as the red color filter 106a is formed in the SA. That is, after applying a color resin of red color to the active area AA and the seal area SA of the first substrate 101 on which the black matrix 105 is formed, the exposed area or exposure is selectively exposed through a photomask. The red color filter 106a and the first auxiliary layer 104a are simultaneously formed at a desired position by removing the non-regions.

Next, as shown in FIG. 5D, the green color filter 106b is formed in the active region AA of the first substrate 101 on which the black matrix 105, the red color filter 106a, and the first auxiliary layer 104a are formed. ), And at the same time, a second auxiliary layer 104b made of the same material as the green color filter 106b is formed in the seal area SA of the first substrate 101. In other words, the green color is applied to the active area AA and the seal area SA of the first substrate 101 by applying green color resin, and then selectively exposed to remove the exposed or unexposed areas. The filter 106b and the second auxiliary layer 104b are formed at the same time.

Next, as illustrated in FIG. 5E, a first matrix including a black matrix 105, a red color filter 106a, a green color filter 106b, a first auxiliary layer 104a, and a second auxiliary layer 104b is formed. A blue color filter 106c is formed in the active region AA of the substrate 101, and a third auxiliary material made of the same material as the blue color filter 106c is formed in the seal region SA of the first substrate 101. Form layer 104c. That is, after applying a color resin having a blue color to the active area AA and the seal area SA of the first substrate 101, the color resin is selectively exposed to remove the exposed or unexposed areas to remove the blue color at a desired position. The filter 106c and the third auxiliary layer 104c are formed at the same time.

In the method of manufacturing a liquid crystal display device according to the present invention, an auxiliary layer comprising red, green, and blue color filters 106a, 106b, and 106c and first to third auxiliary layers 104a, 104b, and 104c ( 104 is a method of forming a red, green and blue color at a desired position by applying a color resin on the first substrate 101 and then selectively exposing and removing the exposed or unexposed areas as described above. It is not limited to the method of forming the filters 106a, 106b, 106c and the first to third auxiliary layers 104a, 104b, 104c, and the red, blue, green color filters 106a, 106b, 106c and the first The first to third auxiliary layers 104a, 104b and 104c may be formed by discharging the color resin onto the first substrate 101 using an inkjet apparatus within a range not departing from the gist of the present invention. It will be possible to manufacture.

In the method of manufacturing a liquid crystal display according to the present invention, the auxiliary layer 104 is composed of the first to third auxiliary layers 104a, 104b, and 104c, but the present invention is not limited thereto. The auxiliary layer 104 may be composed of only the first auxiliary layer 104a or only the first auxiliary layer 104a and the second auxiliary layer 104b, depending on the model or the case of the liquid crystal display.

In the method for manufacturing a liquid crystal display according to the present invention, red, green, and blue color filters 106a, 106b, and 106c and first to third auxiliary layers 104a, 104b, and 104c may be formed. The photo mask used in the case is, the upper and lower thicknesses of each of the first auxiliary layer 104a, the second auxiliary layer 104b, and the third auxiliary layer 104c are red, green, and blue color filters 106a, 106b, and 106c. In the case where the thickness is not equal to each of the upper and lower thicknesses, a region corresponding to the first auxiliary layer 104a, the second auxiliary layer 104b, or the third auxiliary layer 104c may be provided in a slit shape.

Subsequently, as illustrated in FIG. 5F, the second column spacer 103a and the first substrate 101 overlap the upper portion of the auxiliary layer 104 formed in the seal area SA of the first substrate 101. The first column spacer 103b overlapping the black matrix 105 formed in the active region AA is simultaneously formed. At this time, the second column spacer 103a formed in the seal region SA and the first column spacer 103b formed in the active region AA are simultaneously formed of the same material so as to have the same upper and lower thicknesses.

Thereafter, the second substrate 102 on which the switching element is formed is prepared.

Next, the seal material 107 is formed in the seal area SA between the first substrate 101 and the second substrate 102 to surround the second column spacer 103a and the auxiliary layer 104. After the seal member 107 is cured, the two substrates 101 and 102 are bonded to each other. As such, after the seal material 107 is formed between the first substrate 101 and the second substrate 102, the first column space 103b formed in the active area AA is cured in the process of curing the seal material 107. ) And the second column spacer 103a and the auxiliary layer 104 formed in the seal area SA maintain a constant distance between the first substrate 101 and the second substrate 102. The first material 107 is cured to have a uniform upper and lower thickness between the first substrate 101 and the second substrate 102.

1 is a cross-sectional view showing a conventional general liquid crystal display device.

2 is a cross-sectional view showing another example of a conventional general liquid crystal display device.

3 is a cross-sectional view showing a liquid crystal display device according to a preferred embodiment of the present invention.

4 is a cross-sectional view illustrating in detail a color filter substrate of the liquid crystal display of FIG. 3.

5A to 5F are cross-sectional views illustrating a process of manufacturing the color filter substrate of FIG. 4.

** Description of the symbols for the main parts of the drawings **

101: first substrate 102: second substrate

111: color filter substrate 112: thin film transistor array substrate

103b: first column spacer 103a: second column spacer

104: protective layer

105: black matrix 106: color filter

107: Ililjae

Claims

A first substrate and a second substrate on which active regions and seal regions are defined;

A plurality of red, green, and blue color filters formed in the active region on the first substrate;

A first column spacer formed in an active region of any one of the first substrate and the second substrate to maintain a distance between the first substrate and the second substrate;

A second column spacer formed in a seal region of one of the first substrate and the second substrate to maintain a distance between the first substrate and the second substrate;

An auxiliary layer formed between the second column spacer formed in the seal region and the first substrate and formed of the same material as at least one of the red, green, and blue color filters to maintain a gap between the first substrate and the second substrate; ;

Liquid crystal display device comprising a.

The liquid crystal display device according to claim 1, wherein a black matrix for blocking light is further formed in an area between the red, green, and blue color filters on the first substrate, and a seal area.

The liquid crystal display device of claim 2, wherein the auxiliary layer is formed between the black matrix of the seal region and the second column spacer to maintain a gap between the first substrate and the second substrate.

The liquid crystal display of claim 1, wherein the first column spacer formed in the active region and the second column spacer formed in the seal region have the same thickness.

The method of claim 1, wherein a plurality of switching elements are further formed in the active region of the second substrate,

And the first column spacer formed in the active region is formed between the color filter on the first substrate and the switching element on the second substrate to maintain a gap between the first substrate and the second substrate.

The method of claim 1, wherein the seal region on the first substrate and the second substrate is further provided with a seal material for bonding the first substrate and the second substrate,

And the seal member surrounds the second column spacer and the auxiliary layer formed in the seal region.

Preparing a first substrate;

Forming a black matrix on the first substrate to define an active region and a seal region;

A red, green, and blue color filter is formed in an active region of the first substrate on which a black matrix is formed, and at the same time, an auxiliary material made of at least one of the red, green, and blue color filters is formed in a seal region of the first substrate. Forming a layer;

Forming a second column spacer overlapping the auxiliary layer of the seal region of the first substrate and a first column spacer overlapping the black matrix of the active region of the first substrate;

Method of manufacturing a liquid crystal display device comprising a.

The method of claim 7, wherein the auxiliary layer is formed between the black matrix formed in the seal region and the second column spacer to maintain a gap between the first substrate and the second substrate.

The method of claim 7, wherein a color filter of red, green, and blue is formed in an active region of the first substrate on which the black matrix is formed, and a seal material of the first substrate is formed of the same material as that of the red, green, and blue color filters. Forming the auxiliary layer made at the same time,

And forming a red color filter in an active region of the first substrate on which the black matrix is formed, and simultaneously forming a first auxiliary layer made of the same material as the red color filter in the seal region of the first substrate. The manufacturing method of the liquid crystal display device made into.

The method of claim 9, further comprising: forming a red color filter in an active region of the first substrate on which the black matrix is formed, and simultaneously forming a first auxiliary layer made of the same material as the red color filter in a seal region of the first substrate. After that,

Forming a green color filter in an active region of the first substrate on which a red color filter is formed, and simultaneously forming a second auxiliary layer made of the same material as the green color filter in a seal region of the first substrate; ,

And the second auxiliary layer is formed on the first auxiliary layer.

The method of claim 10, wherein a green color filter is formed in an active region of the first substrate on which the red color filter is formed, and a second auxiliary layer made of the same material as the green color filter is formed on the seal region of the first substrate. After the step,

Forming a blue color filter in the active region of the first substrate on which the red and green color filters are formed, and simultaneously forming a third auxiliary layer made of the same material as the blue color filter in the seal region of the first substrate. Lose,

And the third auxiliary layer is formed on the second auxiliary layer.

The method of claim 7, after forming a second column spacer overlapping the top of the auxiliary layer on the first substrate and a first column spacer overlapping the top of the black matrix.

Preparing a second substrate on which a switching element is formed;

Forming and sealing a seal material in a seal region between the first substrate and the second substrate;

The manufacturing method of the liquid crystal display device characterized by the above-mentioned further.

The method of claim 12, wherein the first column spacer formed in the active region is formed between the color filter on the first substrate and the switching element on the second substrate to maintain a gap between the first substrate and the second substrate. Method of manufacturing a liquid crystal display device.

The method of claim 12, wherein the seal material surrounds the second column spacer and the auxiliary layer formed in the seal area.