KR101901253B1 - Display Device integrating with Touch Screen and Method for Manufacturing the Same - Google Patents

Abstract

The present invention relates to a touch screen integrated type display device including a touch screen and complementing rigidity when forming a display device and preventing noise on the display panel side during a touch screen operation and a method of manufacturing the same, The apparatus includes a display panel, a support substrate on which a transparent shielding conductive film is formed on the display panel, and a flexible circuit board electrically connected to the touch sensing unit and the touch sensing unit, And a second adhesive layer formed between the supporting substrate and the display panel and a second adhesive layer formed between the transparent shielding conductive film and the transparent conductive film except for the silver dot, And a second adhesive layer between the sensing portions.

Description

TECHNICAL FIELD [0001] The present invention relates to a touch screen integrated type display device and a method of manufacturing the same,

The present invention relates to a touch screen, and more particularly, to a touch screen integrated type display device including a touch screen to complement rigidity when a display device is formed, and to prevent noise on a display panel side during a touch screen operation, 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 representing electrical information signals has been rapidly developed. In response to this, various flat panel display devices having excellent performance of thinning, lightweighting, 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 for 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 applied alignment film. 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.

As described above, there is an increasing demand for a touch panel capable of recognizing a touch area and transmitting other information in response to the touch area through a hand or a separate input device. Currently, such a touch panel is applied to the outer surface of a liquid crystal display device.

According to the touch sensing method, a resistance method, a capacitance method, and an infrared sensing prevention are categorized. Recently, in consideration of convenience of manufacturing method and sensing power, recently, a capacitance method is attracting attention.

On the other hand, a touch panel is mainly formed by attaching to a liquid crystal display device, and a touch panel to which pressure is applied is required to have a sufficient rigidity.

Further, in order to increase the sensing sensitivity at the time of touch, a shielding structure is required to prevent a signal generated in the liquid crystal display device located below from being transmitted to the touch panel side. Various studies are under way to fulfill this demand.

The conventional touch panel has the following problems.

The conventional touch panel is formed by attaching a cover glass formed with a touch sensor electrode and a liquid crystal panel directly to the touch panel. Since the touch panel is formed as a simple attachment type without considering the structure of the lower display device, In the case of the display device, the influence of the LCM noise can not be avoided by the generation of the parasitic capacitance between the touch sensor electrode and the transparent conductive film.

In addition, in the structure in which the touch sensor electrode is formed inside the cover glass to which the touch is directly performed, there is a problem that it is difficult to secure sufficient rigidity of the cover glass itself after applying the process of forming the touch sensor electrode. There is a risk of breakage.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a touch screen integrated type display device that includes a touch screen and compensates for rigidity when forming a display device, The purpose of that is to provide.

According to an aspect of the present invention, there is provided a touch screen integrated type display device including a display panel, a support substrate having a transparent shielding conductive film formed on the display panel, A cover glass formed with a touch sensing unit and a flexible circuit board electrically connected to the touch sensing unit; silver dots electrically connecting the flexible circuit board and the transparent shielding conductive film; And a second adhesive layer between the transparent shielding conductive film and the touch sensing portion except for the silver dots.

Here, the supporting substrate may be glass. At this time, the thickness may be 0.1 mm to 0.3 mm.

Alternatively, the supporting substrate may be a transparent film.

The second adhesive layer may be of a thickness that compensates for the thickness of the silver dot to planarize the transparent shielding conductive layer and the touch sensing portion.

Here, the first adhesive layer and the second adhesive layer may be ultraviolet curing resins or double-sided adhesives.

The touch sensing unit may include a first electrode and a second electrode intersecting with each other in a central region of the cover glass, and the flexible circuit board may be connected to a pad electrode located at one end of the cover glass, have.

Here, the cover glass may further include a routing wiring connected to the first electrode and the second electrode on one side of the central region of the cover glass, and the other side of which is connected to the pad electrode.

The first surface of the FPC may be connected to the pad electrode, and the second surface of the FPC may be connected to the silver dot. In this case, the second surface of the FPC includes a ground terminal corresponding to the silver dot, and an insulating film may be formed except for the ground terminal.

Alternatively, a soft conductive film may be further formed on the transparent shielding conductive film corresponding to the second surface of the flexible circuit board, and the silver dot may be located on the soft conductive film.

In some cases, one side of the flexible circuit board is extended, and the extended side may be bent toward the transparent shielding conductive film to be connected to the transparent shielding conductive film.

According to another aspect of the present invention, there is provided a method of manufacturing a touch screen integrated type display device including a first step of forming a transparent shielding conductive film on a front surface of a supporting substrate, A second step of forming a pad electrode on the edge of the cover glass in connection with the routing wiring connected to the first and second electrodes outside the central region, A third step of electrically connecting the pad electrode and the first surface of the flexible circuit board by electrically connecting the second surface of the flexible circuit board and the transparent shielding conductive film to a corresponding portion of the flexible circuit substrate through silver dots, ; And a fifth step of attaching the supporting substrate to the display panel via the first adhesive layer.

And a sixth step of attaching a second adhesive layer between the touch sensing part and the transparent shielding conductive film before or after the fourth step.

Or simultaneously with the fourth step, coating a second adhesive layer on either the touch sensing part or the transparent shielding conductive film to form the transparent shielding conductive film, the second surface of the flexible circuit board and the touch sensing part . ≪ / RTI >

Meanwhile, an insulating film may be provided on the uppermost surface of the second surface of the FPCB. In this case, before the fourth step, the seventh step may include exposing the ground terminal by removing the insulating film corresponding to the silver dot corresponding to the second surface of the flexible circuit board.

The above-described touch screen integrated type display device of the present invention and its manufacturing method have the following effects.

First, in the structure having the touch sensing portion on the inner side of the cover glass, the supporting substrate may be further formed under the touch sensing portion to improve the rigidity.

Secondly, a transparent shielding conductive film is formed on the supporting substrate and grounded by bonding using a soft circuit board for driving the touch sensing part and silver dots, thereby preventing noise from the lower display panel.

Thirdly, the flexible circuit board and the transparent shielding conductive film are bonded together, and the adhesive layer is sandwiched between the touch sensing portion and the transparent shielding conductive film to achieve planarization. Especially, when the adhesive layer is formed before the silver dot, the gap between the flexible circuit board and the transparent shielding conductive film is determined according to the gap between the touch sensing portion and the transparent shielding conductive film defined by the formation of the adhesive layer, Bonding is performed, and the flatness uniformity is improved. The clearance between the touch sensing portion and the transparent shielding conductive film is determined in accordance with the gap between the flexible circuit board and the transparent shielding conductive film due to the interposition of the silver dot between the flexible circuit board and the transparent shielding conductive film, When the resin is filled and then the adhesive layer is formed through curing, the gap is kept flat between the cover glass and the supporting substrate.

Fourth, when the first surface of the flexible circuit board is connected to the pad electrode using an anisotropic conductive film or the like, light can not be transmitted through the second surface, which is the opposite surface, and connection confirmation with the second surface may be difficult , And when connecting the transparent shielding conductive film and the second surface of the flexible circuit board, dots can be used to perform automatic bonding without any indentation confirmation.

1 is an exploded perspective view of a touch screen integrated display device according to the present invention.
2 is a cross-sectional view of a touch screen integrated display device of the present invention
3 is a plan view showing an inner side surface of the cover glass in the touch screen integrated display device of the present invention.
4 is a cross-sectional view taken along line I-I 'and II-II'
5 is a plan view showing a shielding conductive film corresponding to the inner surface of the cover glass in the touch screen integrated display device of the present invention.
6 is a cross-sectional view showing the connection state of the flexible circuit board and the shielding conductive film in Fig. 5
7 is a plan view showing a connection state between a flexible circuit board and a shielding conductive film in a touch screen integrated display device according to another embodiment;
Figure 8 is a cross-
9 is a plan view showing a connected state of a flexible circuit board and a shielding conductive film in a touch screen integrated type display device according to yet another embodiment
10 is a cross-
11 is a flowchart showing a manufacturing method of the touch screen integrated display device of the present invention

Hereinafter, a touch screen integrated display device and a method of manufacturing the same according to the present invention will be described in detail with reference to the accompanying drawings.

The configuration of the present invention and the operation and effect thereof will be clearly understood through the following detailed description. Before describing the present invention in detail, the same components are denoted by the same reference symbols as possible even if they are displayed on different drawings. In the case where it is judged that the gist of the present invention may be blurred to a known configuration, do.

FIG. 1 is an exploded perspective view of a touch screen integrated display device of the present invention, and FIG. 2 is a cross-sectional view illustrating a touch screen integrated display device of the present invention.

1, the touch screen integrated type display device of the present invention includes a display panel 1000 and a support substrate (not shown) on which a transparent shielding conductive film 210 is formed on the display panel 1000 A flexible printed circuit (FPC) 400 electrically connected to the touch sensing unit 350 and the touch sensing unit 350 is formed on the inner side of the transparent conductive film 210, And a cover glass (300) formed thereon.

Here, between the divided display panel 1000 and the supporting substrate 200, and between the transparent shielding conductive film 210 and the touch sensing unit 350, an adhesive layer (not shown, see 510 and 520 in FIG. 2) And are attached to each other.

On the other hand, the display panel 1000 includes a first substrate 110 opposed to the first substrate 110 and a second substrate 120, but in some cases, a substrate having an array in which pixels on a matrix are formed, or may be formed in the form of a capping layer.

For example, the display panel 1000 may be a liquid crystal panel, an organic light emitting display panel, an electrophoretic display panel, a plasma display panel, a quantum dot display panel, or the like. When the display panel 1000 is a liquid crystal panel, a thin film transistor array 115 is formed on one of the first substrate 110 and the second substrate 120, and a color filter array 125 And a liquid crystal layer 160 may be formed between the two arrays 115 and 125. [ A first polarizing plate 131 and a second polarizing plate 132 are formed on the back surfaces of the first substrate 110 and the second substrate 120, respectively.

2, when the display panel 1000 is a liquid crystal panel and the liquid crystal panel is in a transverse electric field mode, a back transparent conductive film 126 may be further provided on the back side of the second substrate 120. [ This is provided to prevent external static electricity from flowing in the liquid crystal panel forming process, and it can be grounded through a mechanical or conductive tape. In the case of the transparent screen integrated type display device of the present invention, since the transparent shielding conductive film 210 is provided on the supporting substrate 200 to perform a shielding function And the rear transparent conductive film 126 are not provided, the touch sensing can be performed without any influence by the driving of the lower display panel 1000.

The first substrate 110 is formed on one side of the second substrate 120 so as to protrude from the second substrate 120. A pad electrode (not shown) for applying a driving signal to the thin film transistor array is formed on the first substrate 110, An electrode and a drive IC (not shown) are connected.

Further, the supporting substrate 200 may be a thin film glass or a transparent film. The reason why the support substrate 200 is provided is to prevent the breakage of the touch sensing unit or the defective pattern of the lower display panel due to the pressure due to the touch on the back side of the cover glass.

When the support substrate 200 is a thin film glass, the thickness of the support substrate 200 may be 0.1 mm to 0.3 mm. In this case, after the transparent shielding conductive film 210 is formed on the support substrate 200, Is partially removed through a process such as etching to convert it into a thin film type glass. Here, in the case of the thin film type glass, a process of removing a part of the thickness is necessary because a circular glass having a thickness of 0.5 mm to 0.7 mm is used for supporting the substrate in the equipment at the time of forming the transparent shielding conductive film proceeding such as sputtering However, when the supporting substrate is maintained at the thickness of the circular glass in the finished touch screen integrated display device, there is a problem that the touch screen integrated display device can not be made slimmer. Therefore, The remaining thickness is to be removed through the etching process.

The transparent shielding conductive layer 210 is formed of a transparent conductive layer such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide) or ITZO (Indium Tin Zinc Oxide) And shields the noise generated in the lower display panel 1000. Thus, the sensitivity of the touch sensing unit 350 can be improved by preventing the driving of the touch sensing unit 350 from being interfered with by the noise from the display panel 1000.

The supporting substrate 200 may be a flexible transparent film, as the case may be. In this case, the transparent shielding conductive film 210 is formed while the support substrate 200 is fixed on a separate stage so as to prevent curling of the support substrate 200 when the transparent shielding conductive film 210 is formed , And then the support substrate 200 is separated from the stage.

2, the flexible circuit board 400 and the transparent shielding conductive layer 210 are electrically connected to each other via silver dots 330. Here, the transparent shielding conductive film 210 is provided to shield noise from the lower display panel 1000.

A first adhesive layer 510 is formed between the support substrate 200 and the display panel 1000 and a second adhesive layer 510 is formed between the transparent shielding conductive layer 210 and the touch sensing part 350 except for the silver dot. And an adhesive layer 520.

The second adhesive layer 520 may be thick enough to compensate the thickness of the silver dot 330 and to planarize the transparent shielding conductive layer 210 and the touch sensing part 350.

Here, the first adhesive layer 510 and the second adhesive layer 520 may be ultraviolet curable resins or double-sided adhesives. When the first adhesive layer 510 and the second adhesive layer 520 are ultraviolet curable resins, the transparent shielding conductive film 210 and the touch sensing part (not shown) may be formed between the supporting substrate 200 and the display panel 1000, 350, respectively. Then, a separate ultraviolet ray curing step of irradiating ultraviolet rays from the side of the cover glass 300 is further carried out after the attaching process is performed, so that the first adhesive layer 510 and the second adhesive layer The adhesive layer 520 can be cured together.

Hereinafter, a specific configuration of the touch sensing unit will be described with reference to FIG. 3 and FIG.

FIG. 3 is a plan view showing an inner surface of a cover glass in the touch screen integrated display device of the present invention, and FIG. 4 is a cross-sectional view taken along lines I-I 'and II-II' of FIG.

3 and 4, the touch sensing unit 350 includes a first electrode 3100 and a second electrode 3200 intersecting each other in a central region of the cover glass 300, The circuit board 400 is connected to the pad electrode 301 located on one side of the edge of the cover glass 300.

The first electrode 3100 includes a plurality of diamond-shaped first electrode patterns 310 spaced apart from each other and a bridge electrode 311 connecting the adjacent first electrode patterns 310, In the portion 350, the first electrode 3100 is formed in a plurality of rows.

The second electrode 3200 includes a plurality of diamond-shaped second electrode patterns 320b and a connection pattern 320a that is formed integrally with the second electrode pattern 320b and crosses the bridge electrode 311 . The second electrodes 3200 intersect the first electrodes 3100 and are formed in a plurality of columns.

The second electrode pattern 320b and the connection pattern 320a of the second electrode 3200 and the first electrode pattern 310 of the first electrode 3100 are formed of a transparent conductive material in the same layer , The bridge electrode 311 is formed in a layer different from the first electrode pattern 310 by using a transparent conductive material or a metal material or a double layer of a metal layer and a transparent conductive layer with the first insulating layer 313 interposed therebetween do. When the bridge electrode 311 is a metal material or a double layer of a metal layer / a transparent conductive layer, a pad electrode (see 301 in FIG. 2) may be further formed on the same layer.

In some cases, the shape of the electrode patterns may be changed to another shape, such as a rectangle or a polygon or a circle.

4, the bridge electrode 311 is formed on the cover glass 300, a first insulating layer 313 is formed to cover the bridge electrode 311, a second insulating layer 313 is formed on the first insulating layer 313, A pattern 320b, a connection pattern 320a, and a first electrode pattern 310 are formed. The second electrode pattern 320b, the connection pattern 320a and the first electrode pattern 310 are formed on the cover glass 300 by changing the order and the bridge electrode 311 is formed on the first insulating film 313) may also be used.

A second insulating layer 315 may be further formed to protect the first electrode 3100 and the second electrode 3200. When the second adhesive layer 520 is formed to a sufficient thickness, the second insulating layer 315 may be omitted.

The first insulating layer 313 includes a contact hole 315a through which both ends of the bridge electrode 311 are partially exposed for connection between the bridge electrode 311 and the first electrode pattern 310 . A transparent conductive material is formed on the entire surface of the first electrode pattern 310 so as to be embedded in the contact hole 315a and selectively patterned to form a first electrode pattern 310 connected to the bridge electrode 311, The second electrode pattern 320b spaced apart from the second electrode pattern 320b, and the connection pattern 320a integrated with the second electrode pattern 320b.

One side of the cover glass 300 is connected to the first electrode 3100 and the second electrode 3200 and the other side of the cover glass 300 is connected to the routing wires 331 and 332 connected to the pad electrode 301, .

Hereinafter, specific connection relations between the flexible circuit board and the shielding conductive film will be described with reference to FIGS. 5 and 6. FIG.

FIG. 5 is a plan view showing a shielding conductive film corresponding to the inner surface of the cover glass in the touch screen integrated display device of the present invention, and FIG. 6 is a cross-sectional view showing the connection state of the flexible circuit board and the shielding conductive film of FIG.

5 and 6, the pad electrode 301 is electrically connected to the first surface of the flexible circuit board 400 through an anisotropic conductive film (ACF: see FIG. 6) The second surface (the opposite surface of the first surface) of the flexible circuit board 400 and the transparent shielding conductive layer 210 may be connected to each other via the Ag dot 330. In some cases, a protective layer may be further formed on the transparent shielding conductive layer 210 to protect the surface. In this case, an open process of the silver dot connection portion is further performed.

An insulating layer 410 is formed on the second surface of the flexible circuit board 400 except for the ground terminal 405 and a ground terminal 405 is formed on a portion corresponding to the silver dot 330, It is possible to prevent the inflow of noise.

5 shows the inner surface of the cover glass 300 on which the touch sensing unit 350 is formed. When the shielding conductive film 210 is actually attached through the shielding conductive film 210 and the second adhesive layer 520, Although the connecting portion of the flexible circuit board 400 and the connecting portion 210c of the transparent shielding conductive layer 210 are symmetrically symmetrical with respect to each other, the touch sensing portion 350 is inverted at the time of opposing attachment, The ground terminal 405 of the flexible circuit board 400 and the connection portion 210c of the shielding conductive layer 210 are connected to each other through the dots 330. [

7 and 8 are a plan view and a cross-sectional view, respectively, showing a connection state of a flexible circuit board and a shielding conductive film in a touch screen integrated display device according to another embodiment.

As shown in FIGS. 7 and 8, in another embodiment, one side of the flexible circuit board 400 is extended, and one side of the flexible circuit board 400 is bent so as to face the transparent shielding conductive film 210, . In this case, the connection between the transparent shielding conductive film 210 and the pad electrode (not shown) is performed only on one side of the flexible circuit board 400. In Fig. 7, the contact area on the flexible circuit board 400 side is determined inside the figure, and is omitted.

The cross section shown is briefly shown. The touch sensing portion formed inside the cover glass 300 is omitted, and the touch sensing portion will be positioned on the second adhesive layer 520 and the cover glass 300.

FIGS. 9 and 10 are a plan view and a cross-sectional view illustrating a connection state of a flexible circuit board and a shielding conductive film in a touch screen integrated type display device according to another embodiment.

9 and 10, in another embodiment, one side of the flexible circuit board 400 may be extended, and the transparent conductive film may be further provided with a flexible conductive film 240 to cover the cover glass 300 using the silver dots 330 as shown in FIG. In this case, after the connection is made, the connected flexible printed circuit board 400 and the flexible conductive film can be folded downward.

The lower surface of the flexible conductive film 240 is connected to the transparent shielding conductive film 210 and the upper surface thereof is connected to the silver dot 330 for conduction.

Also in this embodiment, the touch sensing unit is omitted, and the specific structure of the touch sensing unit will be described with reference to FIGS. 3 and 4. FIG.

A manufacturing method of the touch screen integrated display device of the present invention will be briefly described with reference to flowcharts of FIGS. 1 to 6 and FIG.

11 is a flowchart showing a method of manufacturing the touch screen integrated type display device of the present invention.

First, the display panel 1000 is prepared (10S). As described above, the display panel may be a liquid crystal panel, an organic light emitting display panel, an electrophoretic display panel, a plasma display panel, a quantum dot display panel, or the like. For example, in the case of a liquid crystal panel, And a conductive film.

Next, a transparent shielding conductive film 210 is formed on the entire surface of the supporting substrate 200 (20S).

The touch sensing unit 350 includes first and second electrodes 3100 and 3200 intersecting with each other in a central region on the cover glass 300. The touch sensing unit 350 is disposed outside the central region of the cover glass 300, The wiring lines 331 and 332 connected to the first and second electrodes 3100 and 3200 and the pad electrode 301 connected to the wiring lines 331 and 332 are formed on one side of the cover glass 30S.

Next, the first surface of the flexible printed circuit board 400 is connected to the pad electrode 301 using an anisotropic conductive film 420 (40S).

Meanwhile, an insulating layer 410 may be provided on the uppermost surface of the second surface of the FPC 400 to protect it from external noise. In this case, the step of removing the insulating layer 410 corresponding to the silver dot corresponding to the second surface of the FPC 400 may expose the ground terminal 405.

The second surface of the flexible circuit board 400 and the transparent shielding conductive layer 210 are electrically connected to each other through silver dots (Ag) 330 (50S).

Simultaneously with or before and after the conductive connection via the silver dots, the attaching step is carried out between the touch sensing portion and the transparent shielding conductive film via the second adhesive layer 520 (60S). When forming the second adhesive layer 520 simultaneously with the conductive connection via the silver dots 330, silver dots are formed on the connection portion 210c of the shielding conductive layer 210, and ultraviolet curing resin A double-sided tape is formed and the attaching / connecting process is performed so that the ultraviolet curable resin or double-sided tape and the touch sensing part 350 face each other and the ground terminal 405 of the flexible circuit board 400 corresponds to the silver dot do. A silver dot 330 is formed on the second surface of the flexible circuit board 400 at the ground terminal 405 and an ultraviolet curing resin or a double sided tape is formed only on the transparent shielding conductive film 210, The ultraviolet ray curing resin or the double-sided tape is formed on the touch sensing part 350 and the dot 330 is formed only on the connection part of the transparent shielding conductive film 210, The attachment / silver dot connection process may be performed.

When the second adhesive layer 520 and the silver dot 330 are formed in different processes, a second adhesive layer 520 is first applied to either the touch sensing portion 350 or the transparent shielding conductive layer 210 The gap between the second surface of the flexible circuit board 400 and the transparent shielding conductive film 210 is filled with silver dots to form a gap between the ground terminal 405 and the transparent shielding conductive film 210. [ The connection between the conductive films 210 can be achieved. Alternatively, after the connection / bonding is performed via the silver dot 330 between the connection portion 205 of the transparent shielding conductive film 210 or the ground terminal 405 of the second surface of the curled circuit board 400, The gap between the shielding conductive film 210 and the touch sensing unit 350 is filled with ultraviolet curing resin and then the ultraviolet curing resin is hardened by irradiating ultraviolet rays from the upper surface of the cover glass 400 or the lower side of the support substrate 200 The second adhesive layer 520 can be formed.

Next, the supporting substrate 200 is attached to the display panel 1000 through the first adhesive layer 510 (70S).

The first adhesive layer 510 may be an ultraviolet curable resin or a double-sided tape. When the ultraviolet curable resin is applied to one side of the supporting substrate 200 or the display panel 1000, After the display panel 1000 is opposed to the cover glass 300, the cover glass 300 may be irradiated with ultraviolet light to cure the first adhesive layer 510.

The preparation (10S) of the display panel, the formation of the transparent shielding conductive film (20S) on the support substrate, and the formation of the touch sensing portion (30S) in the cover glass may be performed in parallel with each other.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Will be apparent to those of ordinary skill in the art.

110: first substrate 115: thin film transistor array
120: second substrate 125: color filter array
126: Rear transparent conductive film 131: First polarizing plate
132: second polarizer plate 160: liquid crystal layer
200: support substrate 210: transparent shielding conductive film
300: cover glass 301: pad electrode
310: first electrode pattern 311: bridge electrode
313: first insulating film 315: second insulating film
320a: connection pattern 320b: second electrode pattern
330: silver dots 331, 332: routing wiring
350: touch sensing unit 400: flexible circuit board
405: ground terminal 410: insulating film
420: anisotropic conductive film 510: first adhesive layer
520: second adhesive layer 1000: display panel
3100: first electrode 3200: second electrode

Claims (17)

A display panel having a polarizing plate on the uppermost side;
A supporting substrate and a transparent shielding conductive film which are in contact with each other on the polarizing plate;
A cover glass having a touch sensing part and a pad electrode spaced apart from the touch sensing part, on an inner side of the transparent conductive film;
A flexible circuit board electrically connected to the first surface of the pad electrode located on the inner surface of the cover glass;
A silver dot for electrically connecting the second surface of the flexible circuit board to the transparent shielding conductive film;
A first adhesive layer formed between the supporting substrate and the polarizing plate; And
And a second adhesive layer positioned between the transparent shielding conductive film and the touch sensing unit except the silver dot. The method according to claim 1,
Wherein the support substrate is made of glass. 3. The method of claim 2,
Wherein the glass has a thickness of 0.1 mm to 0.3 mm. The method according to claim 1,
Wherein the supporting substrate is a transparent film. The method according to claim 1,
Wherein the sum of the thicknesses of the touch sensing portion and the second adhesive layer in a region where the touch sensing portion overlaps with the cover glass is a sum of thicknesses of the pad electrode, And the thickness of the silver dot is equal to the sum of the thickness of the substrate and the silver dot. The method according to claim 1,
Wherein the first adhesive layer and the second adhesive layer are ultraviolet curable resins or double-sided adhesives. The method according to claim 1,
Wherein the touch sensing unit includes a first electrode and a second electrode which intersect each other in a central region of the cover glass,
Wherein the first surface of the flexible circuit board is connected to the pad electrode located on one side of the edge of the cover glass. 8. The method of claim 7,
Wherein the cover glass further comprises a routing wiring connected to the first electrode and the second electrode on one side of the central region of the cover glass and the other side connected to the pad electrode. delete The method according to claim 1,
Wherein the second surface of the flexible circuit board has a ground terminal corresponding to the silver dot, and an insulating film is formed except for the ground terminal.
delete delete A first step of forming a transparent shielding conductive film on the entire surface of the supporting substrate;
A touch sensing unit including first and second electrodes crossing each other in a central region on a cover glass, a routing wiring connected to the first and second electrodes outside the central region, A second step of forming a pad electrode on one side of the pad;
A third step of connecting the pad electrode and the first surface of the flexible circuit board;
A fourth step of electrically connecting the second surface of the flexible circuit board and a portion corresponding to the transparent shielding conductive film via silver dots; And
And a fifth step of attaching the support substrate and the display panel having the uppermost one as a polarizing plate to each other via a first adhesive layer. 14. The method of claim 13,
Further comprising a sixth step of attaching the touch sensing unit and the transparent shielding conductive film between the touch sensing unit and the transparent shielding conductive film via a second adhesive layer before or after the fourth step, Wherein the sum of the thicknesses of the touch sensing portion and the second adhesive layer in the overlapping portion of the cover glass and the cover glass is set such that the pad electrode, The thickness of the dot is equal to the sum of the thickness of the dot and the thickness of the dot. 14. The method of claim 13,
And simultaneously with the fourth step, a second adhesive layer is coated on one of the touch sensing part and the transparent shielding conductive film to planarize the touch sensing part and the transparent shielding conductive film by compensating the thickness of the silver dot, The method comprising the steps of: (a) 14. The method of claim 13,
Wherein the flexible circuit board has an insulating film on an uppermost surface of a second surface of the flexible circuit board. 17. The method of claim 16,
Further comprising a seventh step of exposing the ground terminal by removing the insulating film corresponding to the silver dot on the second surface of the flexible circuit board before the fourth step.

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