KR101941444B1 - Liquid crystal display device having touch and three dementional display functions and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a liquid crystal display device having a touch and stereoscopic image display function capable of reducing a substrate size and simplifying a process by forming a touch and stereoscopic image display panel so as to attach both a 3D FPC and a touch FPC to a single substrate, And a touch and stereoscopic image display panel bonded to the liquid crystal panel by an adhesive layer, wherein the touch and stereoscopic image display panel includes first and second electrodes and a plurality of routing A plurality of touch pixels having X-axis and Y-axis electrodes for sensing a touch, a plurality of routing lines, a common electrode for implementing the stereoscopic image, A plurality of routing lines for implementing the stereoscopic image, and a pad portion connected by a conductive ball adhesive, And a liquid crystal layer filled between the upper and lower substrates.

Description

TECHNICAL FIELD [0001] The present invention relates to a liquid crystal display device having a touch and a stereoscopic image display function, and a method of manufacturing the same.

The present invention relates to a liquid crystal display (LCD), and more particularly to a liquid crystal display having a stereoscopic image display function and a touch function, an FPC (Flexible Printed Circuit) for implementing a stereoscopic image and an FPC A stereoscopic image display function, and a touch function, and a method of manufacturing the same.

In recent years, as the information age has come to a full-fledged information age, a display field for visually expressing electrical information signals has been rapidly developed. In response to this, various flat panel display devices having excellent performance of thinning, light weight, Flat Display Device) has been developed to replace CRT (Cathode Ray Tube).

Specific examples of such flat panel display devices include a liquid crystal display device (LCD), a plasma display panel (PDP), a field emission display (FED) (Electro Luminescence Display Device: ELD). In general, a flat panel display panel that realizes an image is an essential component. The flat panel display panel has a pair of light emitting or polarizing material layers interposed therebetween And a transparent insulating substrate facing each other.

In a liquid crystal display device, an image is displayed by adjusting the light transmittance of a liquid crystal using an electric field. To this end, the image display apparatus includes a display panel having a liquid crystal cell, a backlight unit for irradiating the display panel with light, and a drive circuit for driving the liquid crystal cell.

The display panel is formed such that a plurality of gate lines and a plurality of data lines intersect to define a plurality of unit pixel regions. At this time, each pixel region includes a thin film transistor array substrate and a color filter array substrate facing each other, a spacer positioned to maintain a constant cell gap between the two substrates, and a liquid crystal filled in the cell gap.

The thin film transistor array substrate includes gate lines and data lines, a thin film transistor formed as a switching element at each intersection of the gate lines and the data lines, a pixel electrode formed in a unit of a liquid crystal cell and connected to the thin film transistor, And an alignment film coated thereon. The gate lines and the data lines are supplied with signals from the driving circuits through respective pad portions.

The thin film transistor supplies a pixel voltage signal supplied to the data line in response to a scan signal supplied to the gate line.

The color filter array substrate includes color filters formed in units of liquid crystal cells, a black matrix for separating color filters and reflecting external light, a common electrode for supplying a reference voltage commonly to the liquid crystal cells, .

The thin film transistor substrate thus manufactured and the color filter array substrate are aligned by aligning each other, then the liquid crystal is injected and sealed.

In the liquid crystal display device thus formed, a touch panel capable of recognizing a touch region through a hand or a separate input means and inputting different data in response to the touch region, and a stereoscopic image display panel for stereoscopic image display There is an increasing demand to add. Currently, such a touch panel and a stereoscopic image display panel are applied to the outer surface of a liquid crystal display device.

A conventional display device in which a touch panel and a stereoscopic image display panel are mounted on a liquid crystal display device will now be described with reference to the accompanying drawings.

1 is a cross-sectional view of a conventional liquid crystal display equipped with a touch panel and a stereoscopic image display panel.

1, the conventional liquid crystal display equipped with a touch panel and a stereoscopic image display panel includes a liquid crystal panel 50, a stereoscopic image display panel 60, and a touch panel 70, And the liquid crystal panel 50, the stereoscopic image display panel 60 and the touch panel 70 are bonded to each other by a first adhesive layer 55 and a second adhesive layer 65, respectively. Here, the first and second adhesive layers 55 and 65 are double-sided adhesives.

The liquid crystal panel 50 includes first and second substrates 10 and 20 opposed to each other and a liquid crystal layer 25 filled between the first and second substrates 10 and 20, Color filter layers 21 and 21a and 21b and 21c are formed on the second substrate 20 and first and second polarizing plates 31 and 32 are formed on the outer surfaces of the first and second substrates 10 and 20, Is formed.

The stereoscopic image display panel 60 includes a third substrate 41 on which electrodes are formed by a transparent material, a fourth substrate 42 on which a black matrix layer (not shown) is formed, And a liquid crystal layer 45 filled between the first substrate 4 and the fourth substrate 42, and a third polarizer (not shown in the figure) is formed on the fourth substrate 42.

The internal structure of the touch panel layer 70 is changed in various forms according to the driving method thereof.

In such a conventional liquid crystal display device in which a touch panel and a stereoscopic image display panel are mounted, the stereoscopic image display panel and the touch panel are adhered to the liquid crystal display device by the adhesive agent, respectively. In addition, since each panel must be adhered by an adhesive, the process is complicated, and each panel uses a separate substrate and the process is complicated, resulting in an increase in production cost.

Therefore, in recent years, techniques have been proposed in which a touch panel is embedded in a stereoscopic image display panel to reduce the thickness of the entire display device and reduce the weight.

FIG. 2 is a side view of a conventional liquid crystal display having a touch and stereoscopic image display function, FIG. 3 is a stereoscopic view of a conventional liquid crystal display having a touch and stereoscopic image display function, FIG. 4 is a cross- 5 is a plan view of the upper substrate 82 of the touch and stereoscopic image display panel 80 of FIG. 2. FIG. 5 is a plan view of the lower substrate 81 of the image display panel 80. FIG.

As shown in FIG. 2, a liquid crystal display device having a conventional touch and stereoscopic image display function includes a liquid crystal panel 50 and a touch and stereoscopic image display panel 80 from the bottom, The liquid crystal panel 50 and the touch and stereoscopic image display panel 80 are bonded to each other by an adhesive layer 55. Here, the adhesive layer 55 is a double-sided adhesive.

The liquid crystal panel 50 includes first and second substrates 10 and 20 opposed to each other and a liquid crystal layer filled between the first and second substrates 10 and 20 And a first polarizing plate 31 and a second polarizing plate 32 are formed on outer surfaces of the first and second substrates 10 and 20, respectively.

The touch and stereoscopic image display panel 80 includes a lower substrate 81 on which electrodes are formed by a transparent material to realize the stereoscopic image and an upper substrate 82 on which electrodes formed of a transparent material for sensing touch are formed A liquid crystal layer (not shown in the figure) filled between the upper and lower substrates, and a polarizing plate 33 formed on the outer surface of the upper substrate 82.

A 3D FPC 83 for supplying a voltage for implementing the stereoscopic image is formed on the lower substrate 81 of the touch and stereoscopic image display panel 80, A touch FPC 84 for touch sensing is formed on the upper substrate 82.

The 3D FPC 83 and the touch FPC 84 are not formed on the same axis but one is formed in the Y axis direction and the other is formed in the X axis direction.

4, a plurality of routing lines 85a, 85b, 85c, and 85d for forming the stereoscopic image are formed on the lower substrate 81 of the touch and stereoscopic image display panel 80 And a plurality of even electrodes 86a connected to one routing line 85a of the routing lines and a plurality of even electrodes 86b connected to another routing line 85b.

5, a plurality of routing lines 87a and 87b for implementing the touch function are formed on the upper substrate 82 of the touch and stereoscopic image display panel 80, And X-axis and Y-axis electrodes 88a and 88b connected to the X-axis and Y-axis electrodes 88a and 88b.

Since the routing lines for implementing the stereoscopic image and the routing lines for implementing the touch function are separately formed on the lower substrate 81 and the upper substrate 82 of the touch and stereoscopic image display panel 80, And FPCs 83 and 84 for driving are formed, respectively.

Therefore, since the upper substrate and the lower substrate are staggeredly attached in order to attach the FPC, the size of the substrate is increased and the process is complicated because the FPC must be attached twice.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a touch and stereoscopic image display panel capable of attaching both a 3D FPC and a touch FPC to a single substrate, It is an object of the present invention to provide a liquid crystal display device having a stereoscopic image display function and a method of manufacturing the same.

According to another aspect of the present invention, there is provided a liquid crystal display having a touch and stereoscopic image display function, including a touch and a stereoscopic image display panel bonded to a liquid crystal panel by an adhesive layer, A lower substrate on which three-dimensional image pixels having first and second electrodes and a plurality of routing lines are formed to realize a stereoscopic image, X-axis and Y-axis electrodes for touch sensing, and a plurality of routing lines A common electrode for implementing the stereoscopic image; an upper substrate on which a pad of the plurality of routing lines for implementing the stereoscopic image and a pad portion connected by a conductive ball adhesive are formed; And a liquid crystal layer filled between the lower substrate and the lower substrate.

According to another aspect of the present invention, there is provided a method of manufacturing a liquid crystal display having a touch and a stereoscopic image display function, including the steps of: A method of manufacturing a touch and stereoscopic image display panel, the method comprising: forming first and second routing lines and pads on a lower substrate of the touch and stereoscopic image display panel to implement a stereoscopic image; Forming a first protective layer on the entire surface of the lower substrate on which the routing lines are formed, and forming a plurality of first contact holes in the first routing line; Forming a plurality of first electrodes to be electrically connected to the first routing line through the plurality of first contact holes; Forming a second protective layer on the entire surface of the lower substrate including the plurality of first electrodes and forming a plurality of second contact holes in the second routing line; Forming a plurality of second electrodes to be electrically connected to the second routing line through the plurality of second contact holes; Third and fourth routing lines and a pad for sensing a touch on an upper substrate of the touch and stereoscopic image display panel and a pad portion electrically connected to the pad of the first and second routing lines formed on the lower substrate ; Forming a plurality of bridges for connecting electrodes in the X-axis direction on the upper substrate; Forming a third protective film over the entire surface of the substrate, forming a third plurality of contact holes in the third and fourth routing lines and the plurality of bridges; Forming an X-axis electrode on the third protective layer and a Y-axis electrode in a direction perpendicular to the X-axis electrode so as to be connected to the first and second routing lines and the plurality of bridges through the third contact hole; Forming a fourth protective film on the entire surface of the substrate; Forming a common electrode for realizing the stereoscopic image on the fourth protective film; Bonding the upper substrate and the lower substrate together so that the pads of the first and second routing lines of the lower substrate and the pads of the upper substrate are electrically connected to each other and forming a liquid crystal layer between the upper substrate and the lower substrate There are features.

The liquid crystal display device having the touch and stereoscopic image display function according to the present invention having the above-described features and the manufacturing method thereof have the following effects.

That is, a pixel for realizing a stereoscopic image is formed on a lower substrate, a pixel for sensing a touch is formed on an upper substrate, a pad for realizing the stereoscopic image is separately formed on the upper substrate, Since the routing line of the pixel for realizing a stereoscopic image on the lower substrate is connected to the pad portion, both the 3D FPC and the touch FPC can be attached to the upper substrate.

Therefore, the substrate size of the touch and stereoscopic image display panel can be reduced and the process can be simplified.

1 is a sectional view of a conventional liquid crystal display equipped with a touch panel and a stereoscopic image display panel
2 is a side view of a conventional liquid crystal display having a touch and stereoscopic image display function
3 is a three-dimensional view of the touch and stereoscopic image display panel 80 of Fig.
4 is a plan view of the lower substrate 81 of the touch and stereoscopic image display panel 80 of FIG.
5 is a plan view of the upper substrate 82 of the touch and stereoscopic image display panel 80 of FIG.
6 is a side view of a liquid crystal display device having a touch and stereoscopic image display function according to the present invention
7 is a perspective view of the stereoscopic view of the touch and stereoscopic image display panel of Fig.
8 is a plan view of the lower substrate 81 of the touch and stereoscopic image display panel 80 of Fig.
9 is a plan view of the upper substrate 82 of the touch and stereoscopic image display panel 80 of FIG.
Fig. 10 is a detailed view of the pad portions of the upper and lower substrates of the touch and stereoscopic image display panel 80 of Fig.
11A to 11E are a process plan view and a cross-sectional view for explaining the manufacturing method of the touch and stereoscopic image display panel of FIG. 6 according to the present invention, and are a process plan view and a sectional view of a lower substrate 81 of a touch and stereoscopic image display panel
12A to 12F are a process plan view and a cross-sectional view for explaining the method of manufacturing the touch and stereoscopic image display panel of FIG. 6 according to the present invention, and are a process plan view and a sectional view of the upper substrate 82 of the touch and stereoscopic image display panel .

A liquid crystal display device having a touch and stereoscopic image display function and a manufacturing method thereof according to the present invention having the above features will be described in detail with reference to the accompanying drawings.

Recently, the present applicant has recently applied for a patent for a liquid crystal display device having a touch and stereoscopic image display function and a method of manufacturing the same (see Patent Application No. 10-2011-0135511 filed on Dec. 15, 2011). Accordingly, the features of the invention described below include all of the above-referenced features.

FIG. 6 is a side view of a liquid crystal display having a touch and stereoscopic image display function according to the present invention, FIG. 7 is a stereoscopic view of the touch and stereoscopic image display panel of FIG. 6, 9 is a plan view of the upper substrate 82 of the touch and stereoscopic image display panel 80 of Fig. 6, Fig. 10 is a plan view of the lower substrate 81 of the panel 80, And the pad portions of the upper and lower substrates of the panel 80 are detailed.

6 and 7, the liquid crystal display device having the touch and stereoscopic image display function according to the present invention includes a liquid crystal panel 50, a touch and stereoscopic image display panel 80, And the liquid crystal panel 50 and the touch and stereoscopic image display panel 80 are adhered to each other by an adhesive layer 55. Here, the adhesive layer 55 is a double-sided adhesive.

The liquid crystal panel 50 includes first and second substrates 10 and 20 opposed to each other and a liquid crystal layer (not shown in FIG. 2) filled between the first and second substrates 10 and 20, And a first polarizing plate 31 and a second polarizing plate 32 are formed on outer surfaces of the first and second substrates 10 and 20, respectively.

The touch and stereoscopic image display panel 80 includes a lower substrate 81 on which electrodes are formed by a transparent material to realize the stereoscopic image and an upper substrate 82 on which electrodes formed of a transparent material for sensing touch are formed A liquid crystal layer (not shown in the figure) filled between the upper and lower substrates, and a polarizing plate 33 formed on the outer surface of the upper substrate 82.

Here, a 3D FPC 83 for supplying a voltage for implementing the stereoscopic image and a touch FPC 84 for sensing the touch are provided on the upper substrate 81 of the touch and stereoscopic image display panel 80 .

The 3D FPC 83 and the touch FPC 84 are formed on the same axis.

8, a plurality of routing lines 85a, 85b, 85c and 85d for forming the stereoscopic image are formed on the lower substrate 81 of the touch and stereoscopic image display panel 80, A plurality of odd electrodes 86a connected to one of the routing lines 85a and a plurality of even electrodes 86b connected to the other routing line 85b . Of course, pads are formed at the ends of the routing lines.

9, the upper substrate 82 of the touch and stereoscopic image display panel 80 includes a plurality of routing lines 87a and 87b for implementing the touch function, And a pad portion 89 connected to pads of the X-axis and Y-axis touch electrodes 88a and 88b and the routing lines 85a, 85b, 85c and 85d shown in FIG.

A 3D FPC 83 is attached to the pad portion 89 and a touch FPC 84 is bonded to the pads of the routing lines 87a and 88b.

10, when the upper substrate 82 and the lower substrate 81 of the touch and stereoscopic image display panel 80 are attached to each other, the lower portion of the touch and stereoscopic image display panel 80 The pad portion 89 is formed on the upper substrate 82 at positions corresponding to the pad portions of the plurality of routing lines 85a, 85b, 85c and 85d formed on the substrate 81, and the plurality of routing lines 85a , 85b, 85c and 85d and the pad portion 89 are electrically connected to each other by a conductive ball adhesive. 3D FPCs 83 are attached to the pad portions 89 and the touch FPCs 84 are bonded to the pad portions of the routing lines 87a and 87b.

Therefore, in the present invention, the 3D FPC 83 and the touch FPC 84 are formed on the same axis.

A method of manufacturing a liquid crystal display device having a touch and stereoscopic image display function according to the present invention will now be described.

11A to 11E are a process plan view and a cross-sectional view for explaining a method of manufacturing the touch and stereoscopic image display panel of FIG. 6 according to the present invention, and are a process plan view and a sectional view of a lower substrate 81 of a touch and stereoscopic image display panel .

As shown in FIG. 11A, routing lines 85a, 85b, 85c, and 85d for forming a stereoscopic image are formed on the edges of the lower substrate 81 of the touch and stereoscopic image display panel 80, A pad which is electrically connected to the pad portion 89 of the upper substrate 82 is formed. Although four routing lines are shown in the figure, a larger number is formed depending on the resolution.

A protective film 91 is formed on the entire surface of the lower substrate 81 on which the routing lines 85a, 85b, 85c and 85d are formed and the protective film 91 is formed by an etching process using a mask, And a plurality of contact holes 92 are formed in the routing line 85a of one of the routing lines 85a, 85b, 85c, and 85d.

A transparent conductive layer is deposited and selectively removed on the protective film 91 including the plurality of contact holes 92 so as to expose the routing line 85a through the plurality of contact holes 92, A plurality of odd electrodes 86a are formed.

A protective film 93 is formed on the entire surface of the lower substrate including the plurality of odd electrodes 86a and the protective films 91 and 93 are selectively removed by an etching process using a mask A plurality of contact holes 94 are formed in the routing line 85b.

A transparent conductive layer is deposited and selectively removed on the protective film 93 including the plurality of contact holes 94 to expose the routing line 86b through the plurality of contact holes 94, A plurality of even-numbered electrodes 86b are formed. And an insulating film (not shown in the figure) is formed on the entire surface.

85b, 85c and 85d are exposed when the contact holes are formed in the respective protective films, and finally the routing lines 85a, 85b, 85c and 85d are exposed, And a predetermined portion of the routing lines 86c and 86d are also exposed to be electrically connected to the common electrode formed on the upper substrate to be described below.

A method of manufacturing the upper substrate of the touch and stereoscopic image display panel will be described as follows.

12A to 12F are a process plan view and a cross-sectional view for explaining the method of manufacturing the touch and stereoscopic image display panel of FIG. 6 according to the present invention, and are a process plan view and a sectional view of the upper substrate 82 of the touch and stereoscopic image display panel .

12A, a plurality of routing lines 871a and 87b for sensing a touch on an edge of the upper substrate 82 of the touch and stereoscopic image display panel 80, a plurality of routing lines 871a and 87b formed on the lower substrate, And a pad portion 89 connected to the pad portions 85a, 85b, 85c, and 85d. Although two routing lines are shown in the drawing, a larger number is formed depending on the resolution.

12B, a plurality of bridges 95 are formed for depositing and selectively removing the transparent conductive layer of the upper substrate 82 to connect the electrodes in the X-axis direction.

12C, a protective film 96 is formed on the entire surface of the upper substrate including the bridge, and the protective film 96 is selectively removed by an etching process using a mask so that the routing lines 87a and 87b, A plurality of contact holes (97) are formed on both sides of the plurality of bridges (95).

As shown in FIG. 12D, a transparent conductive layer is deposited on the entire surface and selectively patterned to form the X-axis and Y-axis electrodes 88a and 88b. Here, the X-axis electrodes 88a are connected to each other through the bridge 95.

In FIG. 12D, the X-axis and Y-axis electrodes 88a and 88b are formed on the same layer. However, the present invention is not limited to this and can be formed on different layers (see patent application 10-2011-0135511).

As shown in FIG. 12E, a protective film 98 is formed on the entire surface of the substrate including the X-axis and Y-axis electrodes 88a and 88b.

 12F, a transparent common electrode 99 for forming a stereoscopic image is formed on the protective film 98. [

Although not shown in the drawing, a black matrix layer and a column spacer are formed on the upper substrate or the lower substrate (see patent application 10-2011-0135511).

That is, although not shown in the drawing, a black matrix is formed on the passivation layer 98 to prevent light leakage in the outer layer, and a column spacer for maintaining the cell gap is formed on the common electrode 99.

Similarly, although not shown in the drawings, the pad portions of the pad portions 89 and the routing lines are exposed when the contact holes are formed in the protective films, and finally.

A liquid crystal layer is formed between the upper substrate 81 and the upper substrate 82 to form a liquid crystal layer between the upper and lower substrates 81 and 82 so as to face each other, Thereby completing the image display panel.

At this time, the pad portions of the routing lines 85a, 85b, 85c, and 85d formed on the lower substrate and the pad portions 89 formed on the upper substrate are bonded by a conductive ball adhesive, 85c and 85d are electrically connected to a common electrode formed on the upper substrate by Ag dots or the like.

The routing lines 85c and 85d formed on the lower substrate are not electrically connected to the common electrode formed on the upper substrate by Ag dots or the like, And the common electrode 99 may be directly connected to the pad portion 89 with a pad.

The 3D FPC 83 is attached to the pad portion 89 and the touch FPC 84 is bonded to the pad portions of the routing lines 87a and 87b.

The touch and stereoscopic image display panel 80 and the liquid crystal panel 50 as described above are adhered to each other with the adhesive 55. [

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents. Will be clear to those who have knowledge of.

50: liquid crystal panel
55:
80: Touch and stereoscopic image display panel
81, 82: substrate
83, 84: FPC
85a, 85b, 85c, 85d, 87a, 87b: routing line
86a, 86b, 88a, 88b: electrodes
89:
90: liquid crystal layer
91, 93, 96, 98: protective film
92, 94, 97: Contact holes
95: Bridge
99: common electrode

Claims (8)

And a touch and stereoscopic image display panel bonded to the liquid crystal panel by an adhesive layer,
The touch and stereoscopic image display panel includes:
A lower substrate having a plurality of first routing lines for implementing a stereoscopic image and a first pad portion formed at an end of the plurality of first routing lines;
A plurality of second routing lines for sensing a touch, a second pad portion connected to an end of the plurality of second routing lines, and a second pad portion connected to the first pad portion of the lower substrate and the conductive ball adhesive An upper substrate having a third pad portion connected thereto,
And a liquid crystal layer filled between the upper and lower substrates. The method according to claim 1,
A touch FPC bonded to the second pad portion of the plurality of second routing lines for sensing the touch of the upper substrate,
And a 3D FPC attached to the third pad unit to supply a signal for implementing the stereoscopic image. 3. The method of claim 2,
Wherein the 3D FPC and the touch FPC are formed on the same axis of the upper substrate. A method of manufacturing a touch and stereoscopic image display panel of a liquid crystal display device having a touch and a stereoscopic image display panel bonded to a liquid crystal panel by an adhesive layer,
Forming first and second routing lines and pads for implementing a stereoscopic image on a lower substrate of the touch and stereoscopic image display panel;
Forming a first protective layer on the entire surface of the lower substrate on which the routing lines are formed, and forming a plurality of first contact holes in the first routing line;
Forming a plurality of first electrodes to be electrically connected to the first routing line through the plurality of first contact holes;
Forming a second protective layer on the entire surface of the lower substrate including the plurality of first electrodes and forming a plurality of second contact holes in the second routing line;
Forming a plurality of second electrodes to be electrically connected to the second routing line through the plurality of second contact holes;
Third and fourth routing lines and a pad for sensing a touch on an upper substrate of the touch and stereoscopic image display panel and a pad portion electrically connected to the pad of the first and second routing lines formed on the lower substrate ;
Forming a plurality of bridges for connecting electrodes in the X-axis direction on the upper substrate;
Forming a third protective film over the entire surface of the substrate, forming a third plurality of contact holes in the third and fourth routing lines and the plurality of bridges;
Forming an X-axis electrode on the third protective layer and a Y-axis electrode in a direction perpendicular to the X-axis electrode so as to be connected to the third and fourth routing lines and the plurality of bridges through the third contact hole;
Forming a fourth protective film on the entire surface of the substrate;
Forming a common electrode for realizing the stereoscopic image on the fourth protective film;
Bonding the upper substrate and the lower substrate together so that the pads of the first and second routing lines of the lower substrate and the pads of the upper substrate are electrically connected to each other and forming a liquid crystal layer between the upper substrate and the lower substrate Wherein the first electrode and the second electrode are electrically connected to each other. 5. The method of claim 4,
Bonding the touch FPC to the pads of the third and fourth routing lines of the upper substrate,
Further comprising bonding a 3D FPC to the pad portion of the upper substrate. ≪ RTI ID = 0.0 > 31. < / RTI > 6. The method of claim 5,
Wherein the 3D FPC and the touch FPC are formed on the same axis of the upper substrate. 5. The method of claim 4,
Forming a black matrix on the fourth protective film for preventing light leakage of the outer frame,
And forming a column spacer for holding a cell gap on the common electrode. The method of claim 1, further comprising forming a column spacer for maintaining a cell gap on the common electrode. The method according to claim 1,
Wherein the lower substrate further includes first and second electrodes connected to two rounding lines of the plurality of first routing lines,
Wherein the upper substrate further comprises X-axis and Y-axis electrodes connected to the plurality of second routing lines, and a common electrode for implementing a stereoscopic image. Display device.

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