KR102419045B1 - Touch type liquid crystal display device - Google Patents

Abstract

An object of the present invention is to provide a method for improving the touch water ripple phenomenon by minimizing liquid crystal flow at the edge of a touch type liquid crystal display.
To this end, a liquid crystal panel in which a non-display area within the seal having a first width is defined inside the display area and the seal pattern, and a dummy column spacer disposed in a dam area having a second width and spaced apart from the seal pattern inside the non-display area within the seal Including, the second width provides a touch type liquid crystal display, characterized in that having a ratio of 55% to 75% of the first width.
Accordingly, by minimizing the separation distance between the seal pattern and the dummy column spacer by maximally increasing the width of the dam region, it is possible to minimize the liquid crystal flow at the edge during a touch operation, thereby reducing the touch water ripple phenomenon caused by the liquid crystal flow. have the potential to improve

Description

Touch type liquid crystal display device

The present invention relates to a touch type liquid crystal display device, and more particularly, to a touch type liquid crystal display device capable of improving a touch water ripple phenomenon by minimizing liquid crystal flow upon touch.

As the information society develops, the demand for display devices for displaying images is increasing in various forms, and in recent years, liquid crystal display devices (LCDs), plasma display devices (PDPs), organic Various flat display devices such as an organic light emitting diode (OLED) are being used.

Among these flat panel display devices, the liquid crystal display device has the advantages of miniaturization, light weight, thinness, and low power driving and is currently most commonly used.

Furthermore, as smart phones and tablets are recently popularized, a touch type liquid crystal display device with a touch panel, which is a touch element for realizing a touch function, is added to the liquid crystal display device.

However, in the touch-type liquid crystal display device, liquid crystal flow occurs due to a touch operation. In particular, liquid crystal flow is concentrated at the edge of the liquid crystal panel, causing a so-called touch water ripple phenomenon.

In this regard, the liquid crystal is concentrated on the edge of the liquid crystal panel when the user touches (ie, when pushed), and the stress is concentrated on the edge of the liquid crystal panel when the touch is released (ie, when released). , the liquid crystal alignment is disturbed at the edge of the liquid crystal panel due to the user's touch operation, causing a touch water ripple phenomenon in which a wave pattern is generated in the image at the edge.

In particular, in recent years, it is a trend to implement a so-called narrow bezel that reduces the width of the non-display area at the edge of the liquid crystal display. phenomena will increase.

An object of the present invention is to provide a method for improving the touch water ripple phenomenon by minimizing liquid crystal flow at the edge of a touch type liquid crystal display device.

In order to achieve the above object, the present invention provides a liquid crystal panel in which a non-display area within a seal having a first width inside a display area and a seal pattern is defined, and a second width spaced apart from the seal pattern inside the non-display area within the seal. It provides a touch type liquid crystal display device comprising a dummy column spacer disposed in a dam region having

Here, the dummy column spacer may include at least one of a dummy cell gap column spacer and a dummy pressed column spacer, and the density of the dummy column spacer may be higher than that of the column spacer.

The color filter substrate includes R, G, and B color filter patterns positioned on the black matrix of the display area, dummy color filter patterns positioned on the black matrix of the non-display area within the seal corresponding to the dam area, R, It may include an overcoat layer positioned on the G and B color filter patterns and the dummy color filter pattern.

In addition, the dummy color filter pattern may extend to the inside of the seal pattern, and the dummy color filter pattern may be formed of a B color filter material.

Meanwhile, the cell gap column spacer of the column spacer may be distributed at a density of 260 to 280 ppm, and the total areal density of the column spacer may be 3.32 to 3.92% of the display area.

In the touch type liquid crystal display device according to the present invention, the width of the dam region, which is the arrangement region of the dummy column spacer, is increased as much as possible in the non-display region within the seal between the seal pattern and the display region, and accordingly, between the seal pattern and the dummy column spacer to minimize the separation distance. Accordingly, it is possible to minimize the liquid crystal flow at the edge during the touch operation, thereby improving the touch water ripple phenomenon caused by the liquid crystal flow.

Furthermore, by forming the dummy color filter pattern on the color filter substrate for the non-display area within the seal, the surfaces of the non-display area within the seal and the display area can be formed substantially flat. Accordingly, it is possible to prevent liquid crystal flow due to a step difference between the non-display area and the display area in the seal, thereby further reducing the liquid crystal flow at the edge during a touch operation, thereby further improving the touch water ripple phenomenon.

In addition, by increasing the density of the column spacers in the display area compared to the prior art, it is possible to strengthen the resistance of the liquid crystal panel to an external force such as a touch operation. Accordingly, it is possible to reduce liquid crystal fluidity during a touch operation, and as a result, it is possible to further improve the touch water ripple phenomenon at the edge.

1 is a plan view schematically showing a liquid crystal panel of a touch type liquid crystal display device according to an embodiment of the present invention.
2 to 5 are plan views illustrating enlarged portions of the first to fourth non-display areas NA1 to NA4, respectively;
6 is a cross-sectional view schematically illustrating a part of a touch type liquid crystal display according to an embodiment of the present invention.

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

In the touch type liquid crystal display device according to the embodiment of the present invention, in the non-display area portion between the seal pattern and the display area (ie, the non-display area within the seal), the dam is the arrangement area of the dummy column spacer. ) region (that is, the area of the dam region) is increased as much as possible, thereby minimizing the separation distance between the seal pattern and the dummy column spacer. In this way, by maximally increasing the area of the dummy column spacer, which functions as a means to impede liquid crystal flow, within the allowable range, it is possible to minimize liquid crystal flow at the edge during touch operation, thereby reducing the touch water ripple phenomenon caused by liquid crystal flow. can be improved

Furthermore, by forming the dummy color filter pattern on the color filter substrate for the non-display area within the seal, the surfaces of the non-display area within the seal and the display area can be formed substantially flat. Accordingly, by preventing liquid crystal flow due to the occurrence of a step difference between the non-display area and the display area in the seal, it is possible to further reduce the liquid crystal flow at the edge during a touch operation, thereby further improving the touch water ripple phenomenon.

In addition, by increasing the density of the column spacers in the display area compared to the prior art, it is possible to strengthen the resistance of the liquid crystal panel to an external force such as a touch operation. Accordingly, it is possible to reduce liquid crystal fluidity during a touch operation, and as a result, it is possible to further improve the touch water ripple phenomenon at the edge.

Hereinafter, a touch-type liquid crystal display in which the above characteristic components for reducing liquid crystal flow are reflected will be described in more detail.

1 is a plan view schematically illustrating a liquid crystal panel of a touch type liquid crystal display device according to an embodiment of the present invention.

Referring to FIG. 1 , a liquid crystal panel 100 of a liquid crystal display device (LCD) according to an embodiment of the present invention includes an array substrate 110 on which an array element including a thin film transistor as a switching element is formed, and the array substrate 110 . It may include a color filter substrate 160 disposed to face and having a color filter pattern formed thereon, and a liquid crystal layer (refer to 150 in FIG. 6 ) filled between the array substrate 110 and the color filter substrate 160 .

Meanwhile, a touch panel (refer to 300 in FIG. 6 ) as a touch element may be attached to the outer surface of the color filter substrate 160 , that is, on the display surface.

In the liquid crystal panel 100 , pixel areas (refer to P in FIGS. 2 to 5 ) are arranged in a matrix form to display a display area AA for displaying an image, and a non-display area NA around the display area AA. This is defined Here, for convenience of description, the non-display areas NA located on the upper, lower, left, and right sides of the drawing are referred to as first, second, third, and fourth non-display areas NA1, NA2, NA3, and NA4, respectively. .

Although not specifically illustrated, a plurality of gate wirings and data lines crossing each other to define a pixel area are formed in the display area AA of the array substrate 110 . In each pixel area, a thin film transistor connected to the corresponding gate line and data line, and a pixel electrode connected to a drain electrode of the thin film transistor to receive a data voltage are disposed.

Meanwhile, a common voltage may be applied to the array substrate 110 to drive the liquid crystal to form a pixel electrode and a common electrode forming an electric field. As such, the liquid crystal panel 100 in which both the pixel electrode and the common electrode are disposed on the array substrate 110 to drive the liquid crystal by the electric field generated therebetween, the IPS (in-plane switching) method or the AH-IPS (Advanced High IPS) method -performance IPS) method.

Of course, a liquid crystal panel 100 of a different type from the liquid crystal panel of the IPS or AH-IPS method may be used. For example, a TN (twisted nematic) method or VA (vertical alignment) method in which a common electrode is formed on the color filter substrate 160 . A liquid crystal panel of this type may be used.

As such, any kind of liquid crystal panel may be used as the liquid crystal panel 100 of the present embodiment.

A color filter pattern is formed corresponding to each pixel area in the display area AA of the color filter substrate 160 facing the array substrate 110 with the liquid crystal layer interposed therebetween. In this regard, referring further to FIGS. 2 to 6 , when R (red), G (green), and B (blue) pixel regions P are used, R, G, and B corresponding to each of the pixel regions P are used. Color filter patterns Cr, Cg, and Cb are disposed.

In addition, in the display area AA of the color filter substrate 160 , a black matrix (see BM of FIG. 6 ) is formed between adjacent pixel areas, so that the non-display elements of the array substrate 110 are gate wirings, data wirings, And the thin film transistor is covered. And, the black matrix is positioned below the color filter pattern.

The color filter substrate 160 may be formed to have a smaller area than the array substrate 110 , and in this embodiment, the color filter substrate 160 is formed by the array substrate 110 in the lower second non-display area NA2 . ), a case in which it is configured to protrude more outward compared to the case is taken as an example. At this time, a plurality of driving signals for driving the liquid crystal panel 100 are applied to a portion of the second non-display area NA2 of the array substrate 110 that is not covered by the color filter substrate 160 but protrudes and is exposed. pads may be formed, and in the case of a chip on glass (COG) method, the driving IC DIC may be mounted on the exposed second non-display area NA2 of the array substrate 110 .

Between the edge of the above-described array substrate 110 and the color filter substrate 160, the seal pattern 200 formed in the non-display area NA spaced apart from the display area AA in a form surrounding the display area AA. ) is placed. The seal pattern 200 performs a function of bonding the array substrate 110 and the color filter substrate 160 while sealing the liquid crystal inside the liquid crystal panel 100 .

The dam area DA in which the dummy column spacer CSd is formed is disposed in the non-display area NAS within the seal corresponding to the portion of the non-display area NA between the seal pattern 200 and the display area AA. At this time, according to the present embodiment, by increasing the width w2, that is, the area occupied by the dam area DA in the non-display area NAS within the seal compared to the prior art, liquid crystal flow at the edge of the liquid crystal panel 100 during a touch operation is reduced. will decrease

More specifically, in this embodiment, when the width w1 of the non-display area NAS within the seal is 100%, the width w2 of the dam area DA is approximately 55% to 75% of the area. It is desirable to design to have On the other hand, in the prior art, the width of the dam area compared to the non-display area within the seal was designed to be as low as about 28%.

As described above, in the related art, the width of the dam region is relatively small, so that the area occupied by the dummy column spacer serving as a means of impeding liquid crystal flow is reduced. Accordingly, the liquid crystal flow is concentrated in the non-display area of the seal having a narrow width, and a touch water ripple phenomenon is induced.

In contrast, in the present embodiment, the area occupied by the dummy column spacer CSd serving as a means of impeding liquid crystal flow increases to a significant extent by significantly increasing the width w2 of the dam area DA compared to the prior art. Due to this, the liquid crystal flow at the edge of the liquid crystal panel 100 can be reduced to a significant level during a user's touch operation, thereby reducing the concentration of liquid crystal to the edge and improving the touch water ripple phenomenon caused by the liquid crystal flow be able to do

In particular, in relation to the width w2 of the dam area DA of the present embodiment, this also takes into account the liquid crystal filling margin. That is, simply increasing the width w2 of the dam area DA to 100% causes a problem in that the liquid crystal filling margin is lowered. It is possible to minimize the liquid crystal flow within the allowable range of the liquid crystal filling margin.

On the other hand, the dummy column spacer CSd configured in the dam area DA according to the present embodiment may be configured in the form of at least one of a cell gap spacer for maintaining the cell gap of the liquid crystal panel 100 and a pressed column spacer for preventing depression. can

In this regard, the cell gap column spacer is formed so that the lower and upper surfaces are in direct contact with the array substrate 110 and the color filter substrate 160, respectively, and has a height corresponding to the cell gap between the two substrates 110 and 160, respectively. , corresponds to a column spacer having a cell gap maintenance function. In addition, the pressed column spacer is formed to be in contact with one of the two substrates 110 and 160 and to be spaced apart from the other to a certain extent, and is substantially a column spacer having a height smaller than the cell gap. It corresponds to a column spacer with a function to relieve external force. In particular, since the cell gap column spacer is in direct contact with the array substrate and the color filter substrate 110 and 160, direct damage may occur to these substrates when an external force is applied. In order to alleviate this, a pressed column spacer can be used.

Referring to FIG. 6 , the cell gap column spacer CS1 and the depressed column spacer CS2 may be mixed and disposed in the display area AA. may be placed in

Here, the dummy column spacer CSd of this embodiment is configured as a dummy cell gap column spacer (see CSd1 in FIG. 6 ), or as a dummy column spacer (see CSd2 in FIG. 6 ), or a combination of all of them. can be

In this case, it is preferable that the dummy pressed column spacer be used alone or used in combination with the dummy cell gap column spacer.

In this regard, if the dummy pressed column spacer is used, damage to the substrate caused by the dummy cell gap column spacer can be alleviated.

In addition, since the dummy pressed column spacer has a relatively low height, the contact area with the liquid crystal is larger than that of the dummy cell gap column spacer. Due to this, the dummy pressed column spacer has a better function of preventing liquid crystal flow than the dummy cell gap column spacer. Therefore, when the dummy pressed column spacer is used alone or is configured at a higher ratio, the liquid crystal flow prevention effect of the dam area DA is further increased, and as a result, the touch water ripple phenomenon caused by the liquid crystal flow is more effectively improved. be able to do

In addition, the density of the dummy column spacer CSd may be higher than that of the column spacer in the display area AA. In this way, the liquid crystal flow in the non-display area (NAS) in the seal is relatively low, so that the touch water ripple phenomenon caused by the liquid crystal flow can be reduced. Here, the density of the dummy column spacers CSd or column spacers may be a number density and/or an areal density. The number density means the number disposed per unit area, and the areal density means an area occupied per unit area.

Meanwhile, in the present embodiment, a dummy color filter pattern (see Cd of FIG. 6 ) is formed in the non-display area NAS within the seal. Such a dummy color filter pattern is formed on the black matrix (see BM of FIG. 6 ) positioned in the non-display area NAS within the seal. Accordingly, the surface of the color filter substrate 160 of the display area AA and the non-display area NAS within the seal adjacent thereto forms substantially the same flat surface. That is, the surface of the overcoat layer (see 180 in FIG. 6 ) positioned on the dummy color filter pattern of the non-display area NAS and the color filter pattern of the display area AA within the seal is between the two areas NAS and AA. There is no step difference at the boundary, and a flat screen is achieved.

In this regard, conventionally, a dummy color filter pattern is not used, so a step is generated at the boundary between the non-display area and the display area in the seal, and the liquid crystal flow increases due to the step. That is, due to the step, the cell gap of the non-display area within the seal becomes larger than that of the display area, so that the holding force of the dummy column spacer decreases, and the liquid crystal volume of the non-display area within the seal becomes relatively large, so that liquid crystal fluidity is high.

On the other hand, in the present embodiment, the dummy color filter pattern is formed as a step difference compensation pattern, so that there is substantially no step at the boundary between the non-display area NAS and the display area AA within the seal. Accordingly, the supporting force by the dummy column spacer CSd increases and the liquid crystal volume of the non-display area NAS within the seal becomes small, thereby reducing the liquid crystal flow due to the conventional step difference, thereby improving the touch water ripple phenomenon. there will be

Meanwhile, in relation to the above dummy color filter pattern, reference may be made to FIGS. 2 to 5 , which are enlarged plan views of portions of the first to fourth non-display areas NA1 to NA4, respectively.

2 to 5 , in the first to fourth non-display areas NA1 to NA4 , the dummy color filter pattern Cd extends to the outer end of the dam area DA to cover the dam area DA, and the seal pattern ( 200) and may be configured to be spaced apart. Meanwhile, the dummy color filter pattern Cd may be formed to extend to the inside of the seal pattern 200 , that is, to the outside of the non-display area NAS within the seal, and in this case, the display area AA and the non-display area NAS within the seal. ) is further increased to further reduce liquid crystal fluidity.

As the dummy color filter pattern Cd, one color filter material among the R, G, and B color filter patterns Cr, Cg, and Cb, which are a plurality of color filter patterns disposed in the display area AA, is used. Here, in consideration of the light leakage through the non-display area NA, it would be preferable to use the B color filter material with low visibility among the R, G, and B color filter materials. In this case, light leakage through the non-display area This can be minimized.

Meanwhile, the dummy color filter pattern Cd may be integrally formed to extend from the color filter pattern Cb of the display area AA made of the same color filter material.

Meanwhile, as mentioned above, a column spacer (see CS of FIG. 6 ) is disposed in the display area AA, and the cell gap column spacer (refer to CS1 of FIG. 6 ) or pressed in addition to the column spacer of the display area AA. A column spacer (see CS2 in FIG. 6 ) may be used.

In particular, in the present embodiment, the density of the column spacers of the display area AA is increased compared to the related art. For example, in the prior art, the density of the cell gap column spacer, that is, the number density was 203 ppm, and the areal density (compared to the display area) occupied by the entire column spacer was 2.19%. In this embodiment, the density of the cell gap column spacer is approximately 260 to 280 ppm. As a result, it is possible to increase by approximately 28 to 38% compared to the prior art, and to increase the area ratio (relative to the display area) of the entire column spacer by approximately 51 to 80% to approximately 3.32 to 3.92%.

As such, by increasing the density of the column spacer of the display area, the liquid crystal fluidity can be reduced by improving the resistance, that is, the support force of the liquid crystal panel against an external force such as touch, and consequently, the touch water ripple phenomenon at the edge can be further improved. do.

In particular, the density of the column spacer of the present embodiment is similar to the width w2 of the above-described dam area DA, and also considers the liquid crystal filling margin, so that liquid crystal fluidity can be minimized within the liquid crystal filling margin allowable range.

Hereinafter, a cross-sectional structure of a touch type liquid crystal display (LCD) according to an embodiment of the present invention will be described in more detail with reference to FIG. 6 . 6 is a cross-sectional view schematically illustrating a touch type liquid crystal display according to an embodiment of the present invention, and is a view taken along the cutting line VI-VI of FIG. 4 . 6 , the structure of the array substrate 110 is briefly illustrated for convenience of explanation, and the display area AA is cut along the left and right boundary between the pixel areas P in the vertical direction of FIG. 4 . was shown.

Referring to FIG. 6 , the liquid crystal display device (LCD) may include a liquid crystal panel 100 and a touch panel 300 attached to the display surface of the liquid crystal panel 100 . As such, the method in which the touch panel 300 is attached to the outer surface of the liquid crystal panel 100 is called an on-cell method. Meanwhile, the present embodiment may also include an in-cell type liquid crystal display in which a touch panel, that is, a touch element, is configured in the liquid crystal panel 100 .

Although not specifically illustrated, the touch panel 300 may be directly attached to the liquid crystal panel 100 through a light-transmitting adhesive. In addition, an optical film such as a polarizing plate may be attached to the outer surface of the color filter substrate 160 of the liquid crystal panel 100, and in this case, the touch panel 300 is attached to the liquid crystal panel 100 in a state where the optical film is attached. it is attached

The liquid crystal panel 100 may include an array substrate 110 positioned below, a color filter substrate 160 positioned above, and a liquid crystal layer 150 filled between the two substrates 110 and 160 .

Meanwhile, between the edge portions of the array substrate 110 and the color filter substrate 160 facing each other, a seal pattern 200 is formed along the non-display area NA to seal the liquid crystal layer 150 therein. do.

On the array substrate 110 , an array element layer 120 including a plurality of stacked films is formed on the inner surface of the first substrate 111 . Although not specifically illustrated, various array elements such as thin film transistors, gate wirings, data wirings, pixel electrodes, and common electrodes may be configured in the array element layer 120 .

A black matrix BM is formed on the inner surface of the second substrate 161 on the color filter substrate 160 . Here, the black matrix BM may include a first part BM1 positioned in the display area AA and a second part BM2 positioned in the non-display area NA. In this case, the first portion BM1 positioned in the display area AA is configured in a grid shape surrounding each pixel area and having an opening therein. In addition, the second portion BM2 positioned in the non-display area NA may have a plate shape in which a separate opening is not formed therein. Meanwhile, FIG. 6 illustrates a portion cut along the boundary between adjacent pixel areas in the vertical direction. The first portion BM1 of the black matrix BM of the display area AA of FIG. 6 is continuous without an opening. is shown in an extended form.

R, G, and B color filter patterns Cr, Cg, and Cb are formed on the first portion BM1 of the black matrix BM of the display area AA. The R, G, and B color filter patterns Cr, Cg, and Cb are respectively formed in corresponding pixel regions, and the edges of these color filter patterns Cr, Cg, Cb are the first part BM1 of the black matrix BM. ) is located on the

Meanwhile, in the non-display area NAS within the seal, a dummy color filter pattern Cd is formed on the second portion BM2 of the black matrix BM. Here, the dummy color filter pattern Cd is preferably formed to at least correspond to and cover the dam area DA, and further extend to the outside of the non-display area NAS within the seal, that is, to the inside of the seal pattern 200 . can be formed.

The dummy color filter pattern Cd may be formed of one of R, G, and B color filter materials, but is preferably formed of the B color filter material in consideration of visibility.

The overcoat layer 180 is formed substantially over the entire surface of the second substrate 161 on the dummy color filter pattern Cd and the R, G, and B color filter patterns Cr, Cg, and Cb. Here, since the dummy color filter pattern Cd is formed in the non-display area NAS within the seal, the surface of the overcoat layer 180 is substantially flat in the display area AA and the non-display area NAS within the seal. That is, the inner surface of the color filter substrate 160 does not substantially have a step difference at the boundary between the non-display area NAS and the display area AA within the seal, and the non-display area NAS and the display area AA within the seal are flat. will have

A plurality of column spacers CS are formed between the array substrate 110 and the color filter substrate 160 in the display area AA. The column spacer CS may include a cell-gap column spacer CS1, and in addition, a pressed column spacer CS2 having a lower thickness or height than the cell-gap column spacer CS1 may be included.

In particular, a plurality of dummy column spacers CSd may be provided in the dam area DA positioned adjacent to the display area AA in the non-display area NAS within the seal. The dummy column spacer CSd may include at least one of a dummy cell gap column spacer CSd1 and a dummy pressed column spacer CSd2.

Here, the second width w2, which is the width of the dam area DA, is preferably formed in a ratio of 55% to 75% based on the first width w1, which is the width of the non-display area NAS within the seal. Here, when the non-display area NAS has a first width w1 of approximately 1130 μm, the dam area DA may be formed to have a second width w2 of approximately 621.5 μm to 847.5 μm.

When the dam area DA is formed with such a width w2, it is possible to minimize the concentration of liquid crystal flow at the edge of the liquid crystal panel 100 while satisfying the liquid crystal filling margin.

In addition, the dummy column spacer CSd is preferably configured to have at least the dummy depressed column spacer CSd2. That is, when an external force is applied, direct damage may occur to the array substrate 110 or the color filter substrate 160 by the dummy cell gap column spacer CSd1. ), it is preferable to configure the dummy column spacer (CSd) to include. In addition, since the dummy pressed column spacer CSd2 is superior in preventing liquid crystal flow compared to the dummy cell gap column spacer CSd1, it is preferable to include at least the dummy pressed column spacer CSd2 in this aspect as well.

Meanwhile, the above column spacer CS or dummy column spacer CSd may be formed when the color filter substrate 160 or the array substrate 110 is manufactured. In this embodiment, when the color filter substrate 160 is manufactured Formed is shown as an example.

In addition, it is preferable to increase the density of the column spacers CS in the display area AA compared to the related art. For example, the number density of the cell gap column spacers CS1 may be set to approximately 260 ppm to 280 ppm. In addition, the areal density of the entire column spacer CS may be set to approximately 3.32% to 3.92%. As described above, by increasing the density of the column spacer (CS) compared to the prior art, it is possible to improve the bearing capacity of the liquid crystal panel 100, and as a result, it is possible to alleviate the liquid crystal fluidity and improve the touch water ripple phenomenon.

[Table 1] below shows experimental results comparing the touch water ripple phenomenon in the touch-type liquid crystal display of the present embodiment and the conventional method described above. In this experiment, the external force generated by the touch water ripple phenomenon was measured while applying the external force to 10 samples (#1 to #10) of the prior art and the present Example, and in [Table 1], 'N' is the external force. The unit is the newton.

#One #2 #3 #4 #5 #6 #7 #8 #9 #10 Avg Max Min conventionally 3N 3N 2N 4N 3N 2N 3N 2N 2N 3N 2.8N 4N 2N Example 4N 6N 5N 3N 6N 6N 4N 4N 5N 5N 4.7N 6N 3N

Referring to [Table 1], it can be seen that the average external force generating the touch water ripple is approximately 2.8N in the conventional case, and the average external force generating the touch water ripple is approximately 4.7N in the present embodiment.

As such, in the present embodiment, a touch water ripple occurs only when a very high level of external force is applied compared to the prior art. That is, it can be confirmed that the touch water ripple phenomenon is improved to a much higher level by approximately 67% (= (4.7N-2.8N)/2.8N*100%).

As described above, in the touch-type liquid crystal display device according to the embodiment of the present invention, the width of the dam region, which is the arrangement region of the dummy column spacer, in the non-display region within the seal between the seal pattern and the display region is increased as much as possible, and thus Accordingly, the separation distance between the seal pattern and the dummy column spacer is minimized. Accordingly, it is possible to minimize the liquid crystal flow at the edge during the touch operation, thereby improving the touch water ripple phenomenon caused by the liquid crystal flow.

Furthermore, by forming the dummy color filter pattern on the color filter substrate for the non-display area within the seal, the surfaces of the non-display area within the seal and the display area can be formed substantially flat. Accordingly, it is possible to prevent liquid crystal flow due to a step difference between the non-display area and the display area in the seal, thereby further reducing the liquid crystal flow at the edge during a touch operation, thereby further improving the touch water ripple phenomenon.

In addition, by increasing the density of the column spacers in the display area compared to the prior art, it is possible to strengthen the resistance of the liquid crystal panel to an external force such as a touch operation. Accordingly, it is possible to reduce liquid crystal fluidity during a touch operation, and as a result, it is possible to further improve the touch water ripple phenomenon at the edge.

The above-described embodiment of the present invention is an example of the present invention, and free modifications are possible within the scope included in the spirit of the present invention. Accordingly, the present invention is intended to cover modifications of the present invention provided they come within the scope of the appended claims and their equivalents.

100: liquid crystal panel 110: array substrate
111: first substrate 120: array element layer
150: liquid crystal layer 160: color filter substrate
161: second substrate 180: planarization layer
200: seal pattern 300: touch panel
AA: display area
NA, NA1-NA4: non-display area, 1-4 non-display area
NAS: Non-display area within the seal
DA: Dam area
BM, BM1-BM2: Black Matrix, Part 1-2
Cr, Cg, Cb: R, G, B color filter pattern
Cd: dummy color filter pattern
CS, CS1, CS2: column spacer, cell gap column spacer, pressed column spacer
CSd,CSd1,CSd2: dummy column spacer, dummy cellgap column spacer, dummy pressed column spacer

Claims (9)

a liquid crystal panel including an array substrate and a color filter substrate bonded through a seal pattern, the liquid crystal panel having a display area and a non-display area within the seal defined inside the seal pattern having a first width;
a column spacer disposed in the display area;
and a dummy column spacer disposed in a dam area having a second width and spaced apart from the seal pattern inside the non-display area within the seal;
The second width has a ratio of 55% to 75% compared to the first width,
The column spacer includes a cell gap column spacer having upper and lower surfaces in contact with the array substrate and the color filter substrate, respectively, and a pressed column spacer having one of the upper and lower surfaces in contact with the array substrate or the color filter substrate,
The dummy column spacer includes only a dummy cell gap column spacer whose upper and lower surfaces are in contact with the array substrate and the color filter substrate, respectively, and a dummy pressed column spacer, wherein one of the upper and lower surfaces is in contact with the array substrate or the color filter substrate,
and the dummy pressed column spacers are disposed in a higher ratio than the dummy cell gap column spacers in the non-display area within the seal.
Touch-type liquid crystal display.
delete The method of claim 1,
The density of the dummy column spacer is higher than the density of the column spacer.
Touch-type liquid crystal display.
The method of claim 1,
The color filter substrate is
R, G, B color filter patterns positioned on the black matrix of the display area;
a dummy color filter pattern positioned on the black matrix of the non-display area within the seal to correspond to the dam area;
an overcoat layer positioned on the R, G, and B color filter patterns and the dummy color filter pattern;
Touch-type liquid crystal display.
5. The method of claim 4,
The dummy color filter pattern extends to the inside of the seal pattern.
Touch-type liquid crystal display.
5. The method of claim 4,
The dummy color filter pattern is made of a B color filter material.
Touch-type liquid crystal display.
The method of claim 1,
The column spacer includes a cell gap column spacer,
The cell gap column spacer is distributed at a density of 260 to 280 ppm.
Touch-type liquid crystal display.
The method of claim 1,
The total areal density of the column spacer is 3.32 to 3.92% of the display area.
Touch-type liquid crystal display. delete

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