KR101140377B1 - touch screen panel and method for manufacturing touch screen panel - Google Patents

Abstract

The present invention relates to a touch screen panel, which is formed on a display screen of a display device, and relates to a touch screen panel and a method of manufacturing a touch screen panel, wherein an upper screen panel and a lower screen panel are coupled at intervals.
An upper screen panel of the touch screen panel according to the present invention includes a surface film layer forming a surface of the touch screen panel; A window printing layer formed on an edge of the surface film layer and forming a window of the display device; An upper transparent conductive layer made of carbon nanotubes and applied to the entire surface of the surface film layer and the window printing layer; And an upper electrode layer formed on the edge of the upper transparent conductive layer in a narrower width than the window printing layer.
The manufacturing method of the touch screen panel and the touch screen panel of the present invention has the effect of preventing the air layer generation by the window printing layer using the flexibility of carbon nanotubes or silver nanowires. In addition, there is an effect that the thickness of the touch screen panel can be made thin, the transmittance is increased, and the manufacturing process can be simplified.

Description

Touch screen panel and method for manufacturing touch screen panel

The present invention relates to a touch screen panel, which is formed on a display screen of a display device, and relates to a touch screen panel and a method of manufacturing a touch screen panel, wherein an upper screen panel and a lower screen panel are coupled at intervals.

The touch screen panel is an input device that can be easily used by anyone of all ages by manipulating the display device by simply touching a button on a display screen of a display device such as a mobile phone, a personal digital assistant (PDA), a notebook, a game machine, or a navigation device with a finger. . Such a touch screen panel includes a resistive film type, a capacitive type, an infrared type, an ultrasonic type, and the like, and a resistive film type is generally used, and a capacitive type is used to minimize the thickness thereof.

1 is a cross-sectional view of a conventional touch screen panel.

As shown in FIG. 1, the conventional resistive touch screen panel includes an upper screen panel 10, a lower screen panel 20, and a double-sided tape 30 that combines the upper screen panel 10. Specifically, the upper screen panel 10 includes a surface film layer 11, a window printing layer 12, an optically clear adhesive (OCA) 13, an upper transparent conductive layer 14 and an upper electrode layer 15. The lower screen panel 20 is formed of a substrate 21, an optical transparent tape 22, a lower transparent conductive layer 23, a lower electrode layer 24, and a dot spacer 25.

The conventional resistive touch screen panel configured as described above applies an electrical signal for position detection, and when the surface film layer 11 is pressed by a finger or a pen, the upper transparent conductive layer 14 becomes a lower transparent conductive layer. In contact with 23, an electrical signal is detected. At this time, the position is determined using the detected electrical signal.

Meanwhile, as shown in FIG. 1, the conventional touch screen panel uses a window-integrated touch screen panel that forms a window printing layer forming a window of the display device on the upper screen panel.

However, conventionally, an interlayer step occurs due to the thickness of the window printing layer, and thus an air layer is generated at a portion between the surface film layer and the optically transparent tape, which causes various problems. When a PET (polyethylene terephthalate) film formed of a transparent conductive layer using an ITO material used as a conventional upper transparent conductive layer in a structure to be applied to the present invention is bent by the step, the entire resistance component is changed to touch recognition. It is due to the fact that it is not precisely formed and that the flexibility of the ITO material itself is insufficient.

In addition, since the conventional touch screen panel uses at least two optically transparent tapes to adhere the upper transparent conductive layer and the lower transparent conductive layer made of ITO to the surface film layer and the substrate, the thickness of the touch screen panel is increased, There is a problem that the transmittance is lowered and the manufacturing process is complicated.

The present invention has been made to solve the above problems, and an object thereof is to provide a touch screen panel and a manufacturing method of a touch screen panel which can prevent the generation of air layer by the window printing layer.

In addition, an object of the present invention is to provide a touch screen panel and a method for manufacturing the touch screen panel that can reduce the thickness of the panel, increase the transmittance, and simplify the manufacturing process.

The problem to be solved by the present invention is not limited to the above-mentioned problem, another problem to be solved by the present invention not mentioned here is apparent to those skilled in the art from the following description. Can be understood.

The touch screen panel formed on the display screen of the display device according to the present invention, wherein the upper screen panel and the lower screen panel are coupled at intervals, includes: a surface film layer on which the upper screen panel forms a surface of the touch screen panel; A window printing layer formed on an edge of the surface film layer and forming a window of the display device; An upper transparent conductive layer made of carbon nanotubes and applied to the entire surface of the surface film layer and the window printing layer; And an upper electrode layer formed on the edge of the upper transparent conductive layer in a narrower width than the window printing layer.

The lower screen panel of the present invention, the substrate that forms the basis of the touch screen panel; Optically transparent tape having adhesiveness on both sides and adhered to the substrate; A lower transparent conductive layer coated with an ITO material and adhered to the optically transparent tape; A lower electrode layer formed on the edge of the lower transparent conductive layer in a narrower width than the window printing layer; And a plurality of dot spacers formed on the surface of the lower transparent conductive layer at intervals.

Another lower screen panel of the present invention, the substrate underlying the touch screen panel; A carbon nanotube material, the lower transparent conductive layer applied to the substrate; A lower electrode layer formed on the edge of the lower transparent conductive layer in a narrower width than the window printing layer; And a plurality of dot spacers formed on the surface of the lower transparent conductive layer at intervals.

Another lower screen panel of the present invention, the substrate underlying the touch screen panel; A lower transparent conductive layer made of silver nano wire and coated on a substrate; A lower electrode layer formed on the edge of the lower transparent conductive layer in a narrower width than the window printing layer; And a plurality of dot spacers formed on the surface of the lower transparent conductive layer at intervals.

Another touch screen panel formed on the display screen of the display device according to the present invention, wherein the upper screen panel and the lower screen panel are coupled at intervals, the upper screen panel includes: a surface film layer forming a surface of the touch screen panel; A window printing layer formed on an edge of the surface film layer and forming a window of the display device; A silver nanowire material, the upper transparent conductive layer applied on the front surface of the surface film layer and the window printing layer; And an upper electrode layer formed on the edge of the upper transparent conductive layer in a narrower width than the window printing layer.

The lower screen panel of the present invention, the substrate that forms the basis of the touch screen panel; Optically transparent tape having adhesiveness on both sides and adhered to the substrate; A lower transparent conductive layer coated with an ITO material and adhered to the optically transparent tape; A lower electrode layer formed on the edge of the lower transparent conductive layer in a narrower width than the window printing layer; And a plurality of dot spacers formed on the surface of the lower transparent conductive layer at intervals.

Another lower screen panel of the present invention, the substrate underlying the touch screen panel; A carbon nanotube material, the lower transparent conductive layer applied to the substrate; A lower electrode layer formed on the edge of the lower transparent conductive layer in a narrower width than the window printing layer; And a plurality of dot spacers formed on the surface of the lower transparent conductive layer at intervals.

Another lower screen panel of the present invention, the substrate underlying the touch screen panel; A silver nanowire material, the lower transparent conductive layer applied to the substrate; A lower electrode layer formed on the edge of the lower transparent conductive layer in a narrower width than the window printing layer; And a plurality of dot spacers formed on the surface of the lower transparent conductive layer at intervals.

The substrate of the present invention is a polycarbonate, polymethyl methacrylate, polycarbonate and polymethyl methacrylate laminated, soda glass or alumina glass Characterized in that any one of.

The touch screen panel of the present invention is formed between the upper electrode layer and the lower electrode layer with a narrower width than the window printing layer, sealingly bonding between the upper screen panel and the lower screen panel, and having a double-sided tape having insulation and elasticity (DAT; Double) Adhesive tape).

The method for manufacturing a touch screen panel which is formed on a display screen of a display device according to the present invention, and wherein the upper screen panel and the lower screen panel are coupled at intervals, includes a surface film layer on which the upper screen panel forms a surface of the touch screen panel. Forming a surface film layer; A window printing layer forming step of forming a window printing layer forming a window of the display device on an edge portion of the surface film layer; An upper transparent conductive layer coating step of applying an upper transparent conductive layer of carbon nanotubes to the front surface of the surface film layer and the window printing layer; And forming an upper electrode layer on the edge portion of the upper transparent conductive layer to form a narrower width than the window printing layer.

The lower screen panel of the present invention includes a substrate forming step of forming a substrate that forms the basis of the touch screen panel; An optical transparent tape adhesive step of adhering an optical transparent tape having adhesiveness on both sides of the substrate; A lower transparent conductive layer adhesive step of attaching a lower transparent conductive layer coated with an ITO material to the optically transparent tape; A lower electrode layer forming step of forming a lower electrode layer on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And a dot spacer forming step of forming a plurality of dot spacers at intervals on the surface of the lower transparent conductive layer.

Another lower screen panel of the present invention, the substrate forming step of forming a substrate that is the base of the touch screen panel; A lower transparent conductive layer coating step of coating a lower transparent conductive layer of carbon nanotubes on a substrate; A lower electrode layer forming step of forming a lower electrode layer on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And a dot spacer forming step of forming a plurality of dot spacers at intervals on the surface of the lower transparent conductive layer.

Another lower screen panel of the present invention, the substrate forming step of forming a substrate that is the base of the touch screen panel; A lower transparent conductive layer coating step of applying a lower transparent conductive layer of silver nanowire material to a substrate; A lower electrode layer forming step of forming a lower electrode layer on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And a dot spacer forming step of forming a plurality of dot spacers at intervals on the surface of the lower transparent conductive layer.

Another method for manufacturing a touch screen panel formed on a display screen of a display device according to the present invention, wherein the upper screen panel and the lower screen panel are coupled at intervals, the surface film of which the upper screen panel forms the surface of the touch screen panel A surface film layer forming step of forming a layer; A window printing layer forming step of forming a window printing layer forming a window of the display device on an edge portion of the surface film layer; An upper transparent conductive layer coating step of applying an upper transparent conductive layer of silver nanowire material on the front surface of the surface film layer and the window printing layer; And forming an upper electrode layer on the edge portion of the upper transparent conductive layer to form a narrower width than the window printing layer.

The lower screen panel of the present invention includes a substrate forming step of forming a substrate that forms the basis of the touch screen panel; An optical transparent tape adhesive step of adhering an optical transparent tape having adhesiveness on both sides of the substrate; A lower transparent conductive layer adhesive step of attaching a lower transparent conductive layer coated with an ITO material to the optically transparent tape; A lower electrode layer forming step of forming a lower electrode layer on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And a dot spacer forming step of forming a plurality of dot spacers at intervals on the surface of the lower transparent conductive layer.

Another lower screen panel of the present invention, the substrate forming step of forming a substrate that is the base of the touch screen panel; A lower transparent conductive layer coating step of coating a lower transparent conductive layer of carbon nanotubes on a substrate; A lower electrode layer forming step of forming a lower electrode layer on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And a dot spacer forming step of forming a plurality of dot spacers at intervals on the surface of the lower transparent conductive layer.

Another lower screen panel of the present invention, the substrate forming step of forming a substrate that is the base of the touch screen panel; A lower transparent conductive layer coating step of applying a lower transparent conductive layer of silver nanowire material to a substrate; A lower electrode layer forming step of forming a lower electrode layer on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And a dot spacer forming step of forming a plurality of dot spacers at intervals on the surface of the lower transparent conductive layer.

The substrate of the present invention is characterized in that it is formed of any one of polycarbonate, polymethyl methacrylate, polycarbonate and polymethyl methacrylate, soda glass or alumina glass.

The method of manufacturing a touch screen panel of the present invention is characterized by including an upper and lower screen panel joining step of sealingly bonding between the upper screen panel and the lower screen panel with a double-sided tape.

By the above-mentioned means for solving the problem, the touch screen panel and the manufacturing method of the touch screen panel of the present invention has the effect that can prevent the air layer generation by the window printing layer.

In addition, the present invention has the effect of reducing the thickness of the touch screen panel, increasing the transmittance, and simplify the manufacturing process.

1 is a cross-sectional view of a conventional touch screen panel.
2 illustrates a touch screen panel according to an exemplary embodiment of the present invention.
3 is a cross-sectional view for describing a touch screen panel according to a first embodiment of the present invention.
4 is a view for explaining a method of manufacturing a touch screen panel according to a first embodiment of the present invention.
5 is a cross-sectional view for describing a touch screen panel according to a second embodiment of the present invention.
6 is a view for explaining a method of manufacturing a touch screen panel according to a second embodiment of the present invention.

Specific matters other than the problem to be solved, the means for solving the problem, and the effects of the present invention as described above are included in the following embodiments and the drawings. Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. Like reference numerals refer to like elements throughout.

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

2 illustrates a touch screen panel according to an exemplary embodiment of the present invention.

As shown in FIG. 2, the touch screen panel according to an embodiment of the present invention is a window-integrated touch screen panel that forms a window of a display screen of a display device such as a mobile phone. Hereinafter, the touch screen panel of the present invention will be described in detail with reference to a cross-sectional view taken along the line AA ′ of FIG. 2.

<First Embodiment>

3 is a cross-sectional view for describing a touch screen panel according to a first embodiment of the present invention.

As shown in FIG. 3, the touch screen panel according to the first embodiment of the present invention includes an upper screen panel 310, a lower screen panel 320, and a double-sided tape 330 that couples the upper screen panel 310.

The upper screen panel 310 is composed of a surface film layer 311, a window printing layer 312, an upper transparent conductive layer 313, and an upper electrode layer 314.

The surface film layer 311 is formed of a PET film layer and forms a surface of the window integrated touch screen panel according to the first embodiment of the present invention. In addition, the surface film layer 311 forms the foundation of the upper screen panel 310.

The window print layer 312 is formed at an edge of the surface film layer 311 and forms a window of the display device. That is, the touch screen panel according to the first embodiment of the present invention is a window integrated type, and does not form a separate window layer on the display screen of the display device, but prints the window with a design and color suitable for the display device in the touch screen panel. By forming the layer 312, the aesthetic effect of the display device can be improved, the thickness can be reduced, and the structure and manufacturing process of the display device can be simplified.

The upper transparent conductive layer 313 is made of carbon nanotubes and is coated on the front surface of the surface film layer 311 and the window printing layer 312. Carbon nanotube material, unlike ITO material, has excellent durability and sufficient flexibility. That is, since it has superior durability as compared to the conventional ITO film, it can have a sufficient durability as a lamination method of the conventional OCA (optical transparent tape) and the ITO film with a simple structure. In addition, the conventional ITO film is insufficient in flexibility, and the electrical property is not changed due to bending with sufficient flexibility as compared with the change in electrical properties due to bending, so that it can be applied to curved surfaces.

Therefore, in the first embodiment of the present invention, the carbon nanotubes are used as the upper transparent conductive layer 313, and can be directly applied to the entire surface of the surface film layer 311 on which the window printing layer 312 is formed. Accordingly, it is possible to solve the problem caused by the conventional interlayer step, and the structure can also be simplified by omitting the PET film layer coated with the optical transparent tape and the ITO material.

The upper electrode layer 314 is formed on the edge of the upper transparent conductive layer 313 in a narrower width than the window print layer 312. As the upper electrode layer 314, an Ag electrode having a high electrical conductivity is mainly used, and the upper electrode layer 314 is generally responsible for the Y axis on the recognition coordinate when the position is recognized by touch.

The lower screen panel 320 includes a substrate 321, an optically transparent tape 322, a lower transparent conductive layer 323, a lower electrode layer 324, and a dot spacer 325.

 The substrate 321 forms the basis of the touch screen panel. The substrate 321 may be formed of polycarbonate, polymethyl methacrylate (acrylic), polycarbonate and polymethyl methacrylate, and soda glass according to the type and characteristics of the display device. It is made of soda glass, alumina glass or similar materials.

Both surfaces of the optically transparent tape 322 are tacky and adhered to the substrate 321. The optically transparent tape 322 is a kind of double-sided tape, which adheres the lower transparent conductive layer 323 of ITO material to the substrate 321 according to the property of transparency, and together with the lower transparent conductive layer 323 of ITO material. Laminated to increase durability.

The lower transparent conductive layer 323 is formed by coating an ITO material on a PET film or a corresponding material, and adheres to the optically transparent tape 322. In the lower screen panel 30 according to the first embodiment of the present invention, since the surface on which the lower transparent conductive layer is formed forms a flat surface without a step or bending, there is no problem even if the lower transparent conductive layer is formed of an ITO material.

The lower electrode layer 324 is formed on the edge of the lower transparent conductive layer 323 with a width narrower than that of the window printing layer 312. As the lower electrode layer 324, an Ag electrode having a high electrical conductivity is mainly used, and the lower electrode layer 324 is generally responsible for the X axis on the recognition coordinates when the position is recognized by touch.

The plurality of dot spacers 325 are formed at intervals on the surface of the lower transparent conductive layer 323. The dot spacer 325 is mainly formed of an insulating material, and is for more accurate position recognition by touch.

The double-sided tape 330 combines the upper screen panel 310 and the lower screen panel 320 described above. In this case, the double-sided tape 330 is formed between the upper electrode layer 314 and the lower electrode layer 324, the gap between the upper screen panel 310 and the lower screen panel 320 by the thickness of the double-sided tape 330 itself. To form. This gap is for pressing the surface film layer 311 with a finger or a pen to recognize its position when the upper transparent conductive layer 313 is in contact with the lower transparent conductive layer 323. The double-sided tape 330 is formed to have a narrower width than the window print layer 312.

In addition, the double-sided tape 330 seals between the upper screen panel 310 and the lower screen panel 320 to seal the air layer formed in the gap from the outside. The enclosed air layer makes the touch screen panel elastic so as to expand the portion contracted by the touch operation again to restore the touch screen panel to its original state. That is, the air layer sealed by the double-sided tape 330 functions as an airbag having elasticity.

On the other hand, the double-sided tape 330 has an insulating property to insulate the upper electrode layer 314 and the lower electrode layer 324, and to be formed of a material having elasticity to soften the function of the elastic airbag when touched. Here, in consideration of insulation, elasticity, adhesiveness, sealing property, and the like of the double-sided tape, other materials may be used instead of the double-sided tape to obtain the same effect as silicon as another embodiment of the present invention.

As described above, in the first embodiment of the present invention, by using the upper transparent conductive layer 313 made of carbon nanotubes, the conventional problem can be improved and the structure thereof can be simplified. Accordingly, the thickness of the touch screen panel can be reduced, and transmittance can be improved. The manufacturing process of the touch screen panel according to the first embodiment of the present invention will be described with reference to FIG. 4.

4 is a view for explaining a method of manufacturing a touch screen panel according to a first embodiment of the present invention. Specifically, FIG. 4A illustrates the manufacturing process of the upper screen panel 310, FIG. 4B illustrates the manufacturing process of the lower screen panel 320, and FIG. 4C illustrates the manufacturing process of the upper screen panel 310. The joining process of the two panels 310 and 320 is shown.

Referring to Figure 4 (a), looking at the manufacturing process of the upper screen panel 310, first, in the surface film layer forming step, the surface film layer 311 forming the surface of the touch screen panel is formed of a PET material. .

Next, in the window printing layer forming step, the window printing layer forming the window of the display device is formed on the edge portion of the surface film layer 311. In this case, the window printing layer 312 is formed of a design and color suitable for the display device.

Next, in the upper transparent conductive layer coating step, the upper transparent conductive layer 313 of carbon nanotube material is coated on the front surface of the surface film layer 311 and the window printing layer 312. This is a process of forming a top transparent conductive layer by coating a carbon nanotube material directly on a coating surface, unlike a top transparent conductive layer forming process in which a conventional ITO film is formed and then adhered. The upper transparent conductive layer forming method according to the first embodiment of the present invention is possible by the characteristics of the carbon nanotube material.

Next, in the upper electrode layer forming step, the upper electrode layer 314 of Ag material is formed on the edge portion of the upper transparent conductive layer 313 in a narrower width than the window printing layer 312.

Referring to FIG. 4B, the manufacturing process of the lower screen panel 320 will be described. First, in the substrate forming step, the substrate 321 forming the foundation of the touch screen panel is formed. In this case, the substrate 321 is formed of polycarbonate, polymethyl methacrylate, polycarbonate and polymethyl methacrylate, soda glass, alumina glass, or a corresponding material according to the type and characteristics of the display device.

Next, in the step of adhering the optically transparent tape, the optically transparent tape 322 having both surfaces of the substrate is adhered to the substrate 321.

Next, in the step of attaching the lower transparent conductive layer, the lower transparent conductive layer 323 of ITO material is attached to the optically transparent tape 322.

Next, in the lower electrode layer forming step, the lower electrode layer 324 made of Ag is formed on the edge portion of the lower transparent conductive layer 323 in a narrower width than the window printing layer 312.

Next, in the dot spacer forming step, a plurality of insulating dot spacers 325 are formed on the surface of the lower transparent conductive layer 323 at intervals.

Referring to FIG. 4C, the touch screen panel is completed through an upper and lower screen panel joining step of sealing the upper screen panel 310 and the lower screen panel 320 with a double-sided tape 330 to bond them. At this time, with respect to the double-sided tape according to the above-described characteristics and functions through FIG.

As described above, according to the manufacturing method of the touch screen panel according to the first embodiment of the present invention, the upper transparent conductive layer 313 is formed by directly applying a carbon nanotube material, so that an air layer is generated due to an interlayer step during manufacturing. In addition to improving the problem, the manufacturing process can be simplified and manufacturing costs can be reduced.

Second Embodiment

5 is a cross-sectional view for describing a touch screen panel according to a second embodiment of the present invention.

As shown in FIG. 5, the touch screen panel according to the second embodiment of the present invention includes an upper screen panel 510, a lower screen panel 520, and a double-sided tape 530 that combines the upper screen panel 510.

The upper screen panel 510 is composed of a surface film layer 511, a window printing layer 512, an upper transparent conductive layer 513, and an upper electrode layer 514.

The surface film layer 511, the window printing layer 512, the upper transparent conductive layer 513, and the upper electrode layer 514 of the upper screen panel 510 according to the second embodiment of the present invention are the first of the present invention. Material, structure, function and operation characteristics of the same or similar to the surface film layer 311, the window printing layer 312, the upper transparent conductive layer 313 and the upper electrode layer 314 of the upper screen panel 310 according to an embodiment Therefore, a detailed description thereof will be referred to the first embodiment of the present invention described with reference to FIG. 3 and will be omitted below. The same applies to the double-sided tape 530.

The lower screen panel 520 includes a substrate 521, a lower transparent conductive layer 522, a lower electrode layer 523, and a dot spacer 524.

Since the substrate 521, the lower electrode layer 523, and the dot spacer 524 of the lower screen panel 520 are the same as described above, description thereof will be omitted.

The lower transparent conductive layer 522 is made of carbon nanotubes and is applied to the substrate 521. Since carbon nanotubes have superior durability compared to conventional ITO films, the carbon nanotubes may have sufficient durability as a stacking method of conventional OCA (optical transparent tape) and ITO films with a simple structure.

Therefore, in the second embodiment of the present invention, similarly to the upper screen panel 510, the carbon nanotubes can be directly applied to the substrate 521 using the lower transparent conductive layer 522. Accordingly, the conventional problem can be improved, and the structure of the touch screen panel can be further simplified by omitting the conventional optically transparent tape, thereby further reducing the thickness of the touch screen panel and further improving the transmittance.

Table 1 below shows the thicknesses of the conventional touch screen panel and the touch screen panel according to the first and second embodiments of the present invention. Table 1 shows a touch according to an embodiment of the present invention as compared to the prior art. It can be seen that the thickness of the screen panel is reduced. Here, the thickness unit is mm.

6 is a view for explaining a method of manufacturing a touch screen panel according to a second embodiment of the present invention. Specifically, FIG. 6A illustrates a manufacturing process of the upper screen panel 510, FIG. 6B illustrates a manufacturing process of the lower screen panel 520, and FIG. 6C. The joining process of the two panels 510 and 520 is shown.

As shown in FIG. 6A, the manufacturing process of the upper screen panel 510 according to the second embodiment of the present invention is the manufacturing process of the upper screen panel 310 according to the first embodiment of the present invention. And, since it has the same or similar manufacturing method and manufacturing order, a detailed description thereof will be referred to the first embodiment of the present invention described with reference to Figure 4, it will be omitted below. The same is true for the bonding process of the two panels 510 and 520 shown in FIG.

Referring to FIG. 6B, the manufacturing process of the lower screen panel 520 will be described. First, in the substrate forming step, the substrate 521 forming the foundation of the tooth screen panel is formed. In this case, the substrate 521 is formed of polycarbonate, polymethyl methacrylate, polycarbonate and polymethyl methacrylate, soda glass, alumina glass, or a corresponding material according to the type and characteristics of the display device.

Next, in the lower transparent conductive layer applying step, the lower transparent conductive layer 522 of carbon nanotube material is applied to the substrate 521. This is a process of forming a lower transparent conductive layer by applying a carbon nanotube material directly to an application surface, unlike a lower transparent conductive layer forming process of adhering an ITO film using a conventional optically transparent tape. The method of forming the lower transparent conductive layer according to the second embodiment of the present invention is possible by the characteristics of the carbon nanotube material.

Next, in the lower electrode layer forming step, an Ag lower electrode layer 523 is formed on the edge of the lower transparent conductive layer 522 to have a narrower width than that of the window printing layer 512.

Next, in the dot spacer forming step, a plurality of insulating dot spacers 524 are formed on the surface of the lower transparent conductive layer 522 at intervals.

As described above, according to the method of manufacturing the touch screen panel according to the second embodiment of the present invention, the upper transparent conductive layer 513 and the lower transparent conductive layer 522 are formed by directly applying a carbon nanotube material. In addition to improving the problem of generation of air gap due to the step difference in manufacturing, it is possible to simplify the manufacturing process even more, and further reduce the manufacturing cost.

<Other Embodiments>

(A) In another embodiment of the present invention, instead of the carbon nanotubes of the first and second embodiments of the present invention described above, silver nanowires are used as the upper transparent conductive layer or the lower transparent conductive layer. It is possible to adopt. Silver nanowire is a material having conductivity and permeability, and similar to carbon nanotubes, there is no change in resistance formation and other properties even when applied to interlayer steps or curved portions. In addition, silver nanowires may be directly applied to the surface film layer or the substrate.

Accordingly, in another embodiment of the present invention, by forming the upper transparent conductive layer or the lower transparent conductive layer using silver nanowires, the above-mentioned problems of the present invention can be sufficiently solved, and the first embodiment and the first embodiment of the present invention It goes without saying that the same effects as described in the second embodiment can be obtained.

Furthermore, since the silver nanowires have excellent light transmittance in comparison with carbon nanotubes and ITO materials in terms of their structure, the transmittance of the touch screen panel can be further improved. In addition, in terms of manufacturing, since silver nanowires are applied by a printing method as compared with carbon nanotubes mainly applied by a deposition method, the manufacturing becomes easier.

(B) The touch screen panel according to another embodiment of the present invention may further form an insulating layer on the upper electrode layer or the lower electrode layer by using an insulating material. This is to ensure sufficient insulation between the upper electrode layer and the lower electrode layer together with the double-sided tape.

As described above, it is to be understood that the technical structure of the present invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the above description, and the meaning and scope of the claims and their All changes or modifications derived from an equivalent concept should be construed as being included in the scope of the present invention.

10, 310, 510: top screen panel
11, 311, 511: surface film layer
12, 312, 512: Windows printed layer
13, 22, 322 optically transparent tape
14, 313, 513: top transparent conductive layer
15, 314, 514: upper electrode layer
20, 320, 520: lower screen panel
21, 321, 521: substrate
23, 323, 522: lower transparent conductive layer
24, 324, 523: lower electrode layer
25, 325, 524: dot spacer
30, 330, 530: double sided tape

Claims (20)

In the touch screen panel formed on the display screen of the display device, the upper screen panel and the lower screen panel are coupled at intervals,
The upper screen panel,
A surface film layer forming a surface of the touch screen panel;
A window printing layer formed on an edge of the surface film layer and forming a window of the display device;
An upper transparent conductive layer made of carbon nanotubes, which is applied to the front surface of the surface film layer and the window printing layer and has a chin formed therein; And
An upper electrode layer formed on the edge portion of the upper transparent conductive layer in a narrower width than the window printing layer;
Touch screen panel comprising a. The method of claim 1,
The lower screen panel,
A substrate on which the touch screen panel is based;
An optically transparent tape having adhesiveness on both sides thereof and adhering to the substrate;
A lower transparent conductive layer coated with an ITO material and adhered to the optically transparent tape;
A lower electrode layer formed on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And
A plurality of dot spacers formed on the surface of the lower transparent conductive layer at intervals;
Touch screen panel comprising a. The method of claim 1,
The lower screen panel,
A substrate on which the touch screen panel is based;
A lower transparent conductive layer made of carbon nanotubes and coated on the substrate;
A lower electrode layer formed on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And
A plurality of dot spacers formed on the surface of the lower transparent conductive layer at intervals;
Touch screen panel comprising a. The method of claim 1,
The lower screen panel,
A substrate on which the touch screen panel is based;
A lower transparent conductive layer made of silver nano wire and coated on the substrate;
A lower electrode layer formed on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And
A plurality of dot spacers formed on the surface of the lower transparent conductive layer at intervals;
Touch screen panel comprising a. In the touch screen panel formed on the display screen of the display device, the upper screen panel and the lower screen panel are coupled at intervals,
The upper screen panel,
A surface film layer forming a surface of the touch screen panel;
A window printing layer formed on an edge of the surface film layer and forming a window of the display device;
An upper transparent conductive layer made of silver nanowires and coated on the front surface of the surface film layer and the window printing layer and having a tuck formed therein; And
An upper electrode layer formed on the edge portion of the upper transparent conductive layer in a narrower width than the window printing layer;
Touch screen panel comprising a. The method of claim 5,
The lower screen panel,
A substrate on which the touch screen panel is based;
An optically transparent tape having adhesiveness on both sides thereof and adhering to the substrate;
A lower transparent conductive layer coated with an ITO material and adhered to the optically transparent tape;
A lower electrode layer formed on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And
A plurality of dot spacers formed on the surface of the lower transparent conductive layer at intervals;
Touch screen panel comprising a. The method of claim 5,
The lower screen panel,
A substrate on which the touch screen panel is based;
A lower transparent conductive layer made of carbon nanotubes and coated on the substrate;
A lower electrode layer formed on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And
A plurality of dot spacers formed on the surface of the lower transparent conductive layer at intervals;
Touch screen panel comprising a. The method of claim 5,
The lower screen panel,
A substrate on which the touch screen panel is based;
A lower transparent conductive layer made of silver nanowires and coated on the substrate;
A lower electrode layer formed on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And
A plurality of dot spacers formed on the surface of the lower transparent conductive layer at intervals;
Touch screen panel comprising a. The method according to any one of claims 2 to 4 and 6 to 8,
The substrate may be made of polycarbonate, polymethyl methacrylate, polycarbonate and polymethyl methacrylate, soda glass, or alumina glass. Touch screen panel, characterized in that formed in one. The method according to any one of claims 2 to 4 and 6 to 8,
It is formed between the upper electrode layer and the lower electrode layer with a narrower width than the window printing layer, sealing and bonding between the upper screen panel and the lower screen panel, characterized in that it comprises a double-sided tape having insulation and elasticity Touch screen panel. In the manufacturing method of the touch screen panel formed on the display screen of the display device, the upper screen panel and the lower screen panel are coupled at intervals,
The upper screen panel,
Forming a surface film layer forming a surface of the touch screen panel;
A window printing layer forming step of forming a window printing layer forming a window of the display device on an edge portion of the surface film layer;
Applying an upper transparent conductive layer of carbon nanotube material to the front surface of the surface film layer and the window printing layer, wherein the upper transparent conductive layer is coated to form a chin; And
Forming an upper electrode layer on the edge portion of the upper transparent conductive layer to have a narrower width than the window printing layer;
Method of manufacturing a touch screen panel characterized in that it comprises a. The method of claim 11,
The lower screen panel,
A substrate forming step of forming a substrate on which the touch screen panel is based;
An optically transparent tape adhering step of adhering an optically transparent tape having adhesiveness on both sides of the substrate;
A lower transparent conductive layer adhesive step of attaching a lower transparent conductive layer coated with an ITO material to the optically transparent tape;
A lower electrode layer forming step of forming a lower electrode layer on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And
A dot spacer forming step of forming a plurality of dot spacers on a surface of the lower transparent conductive layer at intervals;
Method of manufacturing a touch screen panel characterized in that it comprises a. The method of claim 11,
The lower screen panel,
A substrate forming step of forming a substrate on which the touch screen panel is based;
Applying a lower transparent conductive layer to the lower transparent conductive layer of carbon nanotubes on the substrate;
A lower electrode layer forming step of forming a lower electrode layer on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And
A dot spacer forming step of forming a plurality of dot spacers on a surface of the lower transparent conductive layer at intervals;
Method of manufacturing a touch screen panel characterized in that it comprises a. The method of claim 11,
The lower screen panel,
A substrate forming step of forming a substrate on which the touch screen panel is based;
A lower transparent conductive layer coating step of applying a lower transparent conductive layer of silver nanowire material to the substrate;
A lower electrode layer forming step of forming a lower electrode layer on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And
A dot spacer forming step of forming a plurality of dot spacers on a surface of the lower transparent conductive layer at intervals;
Method of manufacturing a touch screen panel characterized in that it comprises a. In the manufacturing method of the touch screen panel formed on the display screen of the display device, the upper screen panel and the lower screen panel are coupled at intervals,
The upper screen panel,
Forming a surface film layer forming a surface of the touch screen panel;
A window printing layer forming step of forming a window printing layer forming a window of the display device on an edge portion of the surface film layer;
Applying an upper transparent conductive layer of silver nanowire material to the front surface of the surface film layer and the window printing layer, wherein the upper transparent conductive layer is applied to form a chin; And
Forming an upper electrode layer on the edge portion of the upper transparent conductive layer to have a narrower width than the window printing layer;
Method of manufacturing a touch screen panel characterized in that it comprises a. 16. The method of claim 15,
The lower screen panel,
A substrate forming step of forming a substrate on which the touch screen panel is based;
An optically transparent tape adhering step of adhering an optically transparent tape having adhesiveness on both sides of the substrate;
A lower transparent conductive layer adhesive step of attaching a lower transparent conductive layer coated with an ITO material to the optically transparent tape;
A lower electrode layer forming step of forming a lower electrode layer on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And
A dot spacer forming step of forming a plurality of dot spacers on a surface of the lower transparent conductive layer at intervals;
Method of manufacturing a touch screen panel characterized in that it comprises a. 16. The method of claim 15,
The lower screen panel,
A substrate forming step of forming a substrate on which the touch screen panel is based;
Applying a lower transparent conductive layer to the lower transparent conductive layer of carbon nanotubes on the substrate;
A lower electrode layer forming step of forming a lower electrode layer on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And
A dot spacer forming step of forming a plurality of dot spacers on a surface of the lower transparent conductive layer at intervals;
Method of manufacturing a touch screen panel characterized in that it comprises a. 16. The method of claim 15,
The lower screen panel,
A substrate forming step of forming a substrate on which the touch screen panel is based;
A lower transparent conductive layer coating step of applying a lower transparent conductive layer of silver nanowire material to the substrate;
A lower electrode layer forming step of forming a lower electrode layer on the edge portion of the lower transparent conductive layer in a narrower width than the window printing layer; And
A dot spacer forming step of forming a plurality of dot spacers on a surface of the lower transparent conductive layer at intervals;
Method of manufacturing a touch screen panel characterized in that it comprises a. The method according to any one of claims 12 to 14 and 16 to 18,
The substrate is a method of manufacturing a touch screen panel, characterized in that formed of any one of polycarbonate, polymethyl methacrylate, polycarbonate and polymethyl methacrylate, soda glass or alumina glass. The method according to any one of claims 12 to 14 and 16 to 18,
Method for manufacturing a touch screen panel comprising the upper and lower screen panel joining step of sealing and bonding between the upper screen panel and the lower screen panel with a double-sided tape.

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