KR101210701B1 - Touch panel, method for making the same, and electronic device adopting the same - Google Patents

Abstract

The present invention provides a touch panel including a first electrode plate and a second electrode plate provided at regular intervals from the first electrode plate. The first electrode plate includes a first substrate and a first conductive layer provided on the surface of the first substrate, and the second electrode plate includes a second substrate and a second substrate provided on the surface of the second substrate. A conductive layer, wherein the second conductive layer is disposed to face the first conductive layer of the first electrode plate, and at least one of the first conductive layer and the second conductive layer has a carbon nanotube structure. It is provided. A method of manufacturing the touch panel and an electronic device using the touch panel are provided.

Description

TOUCH PANEL, METHOD FOR MAKING THE SAME, AND ELECTRONIC DEVICE ADOPTING THE SAME}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a touch panel, a method for manufacturing the touch panel, and an electronic device using the touch panel, and more particularly, to a touch panel made of carbon nanotubes, a method for manufacturing the same, and an electronic device using the touch panel. .

In recent years, with the development of high performance and diversification of various electronic devices, electronic devices for installing translucent touch panels on the front surface of such display devices, such as liquid crystal panels, are gradually increasing. The user of the electronic device visually checks the contents displayed on the display device behind the touch panel, and controls the electronic device by touching the touch panel with a finger or a pen. That is, various functions of the electronic device can be controlled as desired.

The touch panel may be divided into a pressure type touch panel, a capacitance type touch panel, an infrared touch panel, and a surface acoustic touch panel according to the difference in operating principle and transmission medium. Among them, pressure touch panels are the most widely used ("Production of Transparent Conductive Films with Inserted SiO2 Anchor Layer, and Application to a Resistive Touch Panel" Kazuhiro Noda, Kohtaro Tanimura.Electronics and Communications in Japan, Part 2, Vol .84, P39-45 (2001).

Conventional pressure-type touch panels generally include an upper substrate, a lower substrate, and a dot spacer. An upper transparent conductive layer is formed on a lower surface of the upper substrate, a lower transparent conductive layer is formed on an upper surface of the lower substrate, and the dot spacer is provided between the upper and lower transparent conductive layers. The upper and lower transparent conductive layers generally employ an indium tin oxide (ITO) layer having conductive properties.

When using the conventional pressure type touch panel, when the pressure type touch panel is pressed with a finger or a pen on the upper substrate, the upper substrate is deformed so that the upper transparent conductive layer and the lower transparent conductive layer of the compressed portion come into contact with each other. At this time, a voltage is applied to each of the upper and lower transparent conductive layers by an external electronic circuit. In addition, the apparatus of the touch panel may measure the voltage change of the upper transparent conductive layer and the voltage change of the lower transparent conductive layer, perform calculations accurately, and then switch to coordinates of the compressed region. The apparatus of the touch panel then transmits the coordinates of the compressed portion to the CPU. The CPU transmits a corresponding command based on the coordinates of the compression part to realize the switching of various functions of the electronic device.

In a conventional method of manufacturing a pressure type touch panel, a transparent conductive layer is formed by depositing an ITO layer on the upper and lower substrate surfaces by ion beam sputtering or vapor deposition. In the manufacturing process of the transparent conductive layer, not only a vacuum environment is required, but also must be heated to 200 ~ 300 ℃ manufacturing cost of the ITO layer is relatively high. In addition, the ITO layer has a drawback of poor durability, low chemical durability, and uneven distribution of resistance as a transparent conductive layer. Moreover, the transparency of ITO falls in humid air. For this reason, the conventional pressure touch panel and the display device using the same have poor durability, low sensitivity, and relatively poor linearity and accuracy.

Disclosure of Invention The present invention provides a touch panel having excellent durability, high sensitivity, high linearity and high accuracy, a simple manufacturing process and low cost, and a manufacturing method thereof, and an electronic device using the touch panel. There is this.

The touch panel according to the present invention for achieving the above object comprises a first electrode plate and a second electrode plate provided at a predetermined interval from the first electrode plate. The first electrode plate includes a first substrate and a first conductive layer provided on a surface of the first substrate. The second electrode plate includes a second substrate and a second conductive layer provided on the surface of the second substrate. The first conductive layer and the second conductive layer are provided to face each other. At least one conductive layer of the first conductive layer and the second conductive layer has a carbon nanotube structure.

In addition, the method for manufacturing a touch panel according to the present invention comprises the steps of providing a first substrate and a second substrate; Forming a first electrode plate and a second electrode plate by forming carbon nanotube structures on surfaces of the first substrate and the second substrate, respectively; Two first electrodes are spaced apart from each other on the first electrode plate, and two second electrodes are spaced apart from each other on the second electrode plate, and the carbon nanotube structure of the first electrode plate and the second electrode are spaced apart. And installing the carbon nanotube structures in the electrode plate to face each other.

In addition, the electronic device according to the present invention includes a touch panel and a display device. The touch panel includes a first electrode plate and a second electrode plate provided at regular intervals from the first electrode plate. The first electrode plate includes a first substrate and a first conductive layer provided on a surface of the first substrate. The second electrode plate includes a second substrate and a second conductive layer provided on the surface of the second substrate. The display device is provided to face the second electrode plate of the touch panel. At least one conductive layer of the first conductive layer and the second conductive layer has a carbon nanotube structure.

The touch panel, the manufacturing method of the touch panel, and the display device using the touch panel according to the present invention have the following advantages.

First, due to the excellent mechanical properties of the carbon nanotubes, the transparent conductive layer has excellent toughness and mechanical strength. Therefore, the durability of the touch panel can be improved, and the durability of the display device using the touch panel can also be improved.

Second, the carbon nanotubes have excellent conductivity, and the carbon nanotubes in the carbon nanotube structure are uniformly distributed. Therefore, the resistance value of the transparent conductive layer is uniformly distributed by using the carbon nanotube structure as the transparent conductive layer. As a result, resolution and accuracy of the touch panel and the display device using the touch panel can be improved.

Third, the method of manufacturing the carbon nanotube structure does not require a vacuum environment and heating process. Therefore, by using the carbon nanotube structure as the transparent conductive layer, it is possible to reduce the manufacturing cost of the touch panel and the display device using the touch panel.

Hereinafter, a touch panel, a manufacturing method of a touch panel, and an electronic device using the touch panel according to the present invention will be described in detail with reference to the exemplary drawings.

1 is a perspective view of a touch panel 10 according to the present invention, Figure 2 is a cross-sectional view of the touch panel 10 according to the present invention.

1 and 2, the touch panel 10 according to the present invention includes a first electrode plate 12, a second electrode plate 14, the first electrode plate 12, and the first electrode plate 12. A plurality of dot spacers 16 provided between the two electrode plates 14 are provided.

The first electrode plate 12 includes a first substrate 120, a first conductive layer 122, and two first electrodes 124. The structure of the first substrate 120 is a planar structure. Both the first conductive layer 122 and the two first electrodes 124 are provided on the lower surface of the first substrate 120. The two first electrodes 124 are respectively provided at both ends of the first conductive layer 122 in a first direction, and are electrically connected to the first conductive layer 122.

The second electrode plate 14 includes a second substrate 140, a second conductive layer 142, and two second electrodes 144. The structure of the second substrate 140 is a planar structure. The second conductive layer 142 and the two second electrodes 144 are both provided on the upper surface of the second substrate 140. The two second electrodes 144 are respectively provided at both ends of the second conductive layer 142 in the second direction, and are electrically connected to the second conductive layer 142. The first direction and the second direction are perpendicular to each other. That is, the two first electrodes 124 and the two first electrodes 124 are installed perpendicular to each other.

The first substrate 120 is a transparent flexible thin film or thin plate. The material of the second substrate 140 may be a hard material or a flexible material such as glass, quartz, diamond and plastic. The second substrate 140 mainly serves to support other components installed thereon.

When the first substrate 120 and the second substrate 140 has a flexible planar structure, the thickness of the substrate is 0.01 mm to 1 cm, the material is polycarbonate (PC), polymethyl methacrylate (PMMA), Polyester materials such as polyethylene terephthalate (PET), polyethersulfone (PES), cellulose ester, benzocyclobutene in (BCB), polyvinyl chloride (PVC), acrylic resin It may be a material such as. The material of the second substrate 140 is not limited to the above-described materials, and all materials are within the scope of the present invention as long as they can be localized and have a certain transparency.

As the material of the first electrode 124 and the second electrode 144, a metal, an alloy, a conductive polymer, a carbon nanotube structure, or other conductive material may be used. That is, it is only necessary to ensure the conductivity of the first electrode 124 and the second electrode 144 described above.

In the present embodiment, the polyester film as the first substrate 120, the glass substrate as the second substrate 140, the first electrode 124 and the second electrode 144 are conductive silver paste (Conductive Silver). Paste) layer or carbon nanotube structure.

An insulating layer 18 may be provided on the outer edge of the upper surface of the second electrode plate 14. The first electrode plate 12 is provided on the insulating layer 18, and the first conductive layer 122 and the second conductive layer 142 face each other. The distance between the first electrode plate 12 and the second electrode plate 14 is 2 μm to 10 μm.

The plurality of dot spacers 16 are spaced apart from each other on the second conductive layer 142.

The insulating layer 18 and the plurality of dot spacers 16 may both be formed of an insulating resin or other insulating material. Installation of the insulating layer 18 and the dot spacer 16 may prevent electrical contact between the first electrode plate 12 and the second electrode plate 14. In addition, when the size of the touch panel 10 is small, the dot spacer 16 may not be provided as long as the insulation between the first electrode plate 12 and the second electrode plate 14 can be ensured.

At least one conductive layer of the first conductive layer 122 and the second conductive layer 142 has a carbon nanotube structure. The carbon nanotube structure contains a plurality of uniformly distributed carbon nanotubes, and the carbon nanotubes are arranged in an orderly or orderly manner. Disorder means that the arrangement direction of the carbon nanotubes is not fixed, the quantity of the carbon nanotubes arranged along each direction is almost the same, and the order means that the arrangement direction of the plurality of carbon nanotubes is at least constant It means to have. For example, it is basically arranged in a preferred orientation along one fixed direction or several fixed directions. The disorderedly arranged carbon nanotubes are attracted and entangled with each other by Van der Waals forces and are also parallel to the surface of the carbon nanotube structure. The orderly arranged carbon nanotubes are attracted by van der Waals' forces and are arranged in a preferential direction along one or several directions.

Carbon nanotube structure may be composed of the following carbon nanotube membrane. The carbon nanotube film may be a filling film, a press film, a drawing film, or the like.

3 is an electron micrograph of a packed carbon nanotube according to the present invention. The packed film contains a plurality of carbon nanotubes uniformly distributed in a disordered manner, and the carbon nanotubes are arranged isotropically. The carbon nanotubes are attracted and entangled with each other by van der Waals forces. Thus, the filling film has good flexibility and does not rupture in any shape. In addition, since the filling membrane itself has a supporting ability, the support for supporting the filling membrane may be omitted. The thickness of the filling film is 0.5 nm to 1 mm.

4 is an electron micrograph of a press film in which carbon nanotubes according to the present invention are arranged along the same direction, and FIG. 5 is an electron micrograph of a press film in which carbon nanotubes according to the present invention are arranged along different directions.

The press film contains a plurality of carbon nanotubes uniformly distributed. The carbon nanotubes may be arranged isotropically, or may be arranged in a preferred direction along the same direction or in different directions. In the press film, the carbon nanotubes form a constant angle α with the surface of the press film. The range of this angle α is greater than or equal to 0 degrees and less than or equal to 15 degrees. That is, 0 degrees ≤ α ≤ 15 degrees. Preferably, the carbon nanotubes are parallel to the surface of the press film.

Depending on the press method, the arrangement of carbon nanotubes of the press film is also different. Specifically, the carbon nanotubes may be arranged isotropically, or may be arranged in a preferential direction along a fixed direction or in another direction. That is, as shown in FIG. 4, the carbon nanotubes in the press film are arranged in a preferential direction along a fixed direction, and as shown in FIG. 5, the carbon nanotubes in the press film are in a priority direction along another direction. Can be arranged.

Portions of the carbon nanotubes in the press film overlap each other. The carbon nanotubes are attracted to each other and closely connected by van der Waals forces. For this reason, the press film has good flexibility and does not rupture in any shape. In addition, since the press film itself has a supporting ability, the support for supporting the press film can be omitted. The thickness of the filling film is 0.5 nm to 1 mm.

6 is an electron micrograph of a drawing film of a carbon nanotube according to the present invention. The drawing film contains a plurality of carbon nanotubes arranged in a preferential direction along the drawing direction. The carbon nanotubes are connected end to end continuously. The carbon nanotubes are uniformly distributed and parallel to the surface of the drawing film. The carbon nanotubes are connected by van der Waals forces. The ends and ends of the carbon nanotubes are connected by van der Waals forces, while the carbon nanotubes parallel to each other are also connected by van der Waals forces. The thickness of the drawing film is 0.5 nm to 100 m.

The carbon nanotube structure may contain at least two carbon nanotube membranes that overlap each other. In addition, the carbon nanotube structure may be formed by overlapping the carbon nanotube films, and thus, the thickness of the carbon nanotube structure is not limited, and may be any thickness according to actual demand. When the carbon nanotube structure contains a plurality of drawing films, the arrangement directions of the carbon nanotubes in the drawing films adjacent to each other form a constant angle β. The range of this angle β is greater than or equal to 0 degrees and less than or equal to 90 degrees. That is, 0 degrees ≤ β ≤ 90 degrees.

In the present embodiment, both the first conductive layer 122 and the second conductive layer 142 have a carbon nanotube structure. A drawing film is used as the carbon nanotube structure. As shown in FIG. 6, the carbon nanotubes in the drawing film are continuously connected to each other in the drawing direction and arranged in a priority direction in the drawing direction. For example, each layer of carbon nanotubes is end-to-end connected continuously and arranged in a priority direction along the same direction. The drawing layer may contain a plurality of carbon nanotube segments. The carbon nanotube fragments are composed of carbon nanotubes that are approximately equal in length and parallel to each other. The carbon nanotube fragments are connected to each other by van der Waals forces. All of the drawing films in the first conductive layer 122 overlap each other in the first direction, and all of the drawing films in the second conductive layer 142 overlap each other along the second direction. The thickness of the drawing film is 0.5 nm to 100 m.

In the touch panel 10 of the present invention, the transparent protective film 126 may be provided on the surface of the first electrode plate 12. The transparent protective film 126 is formed of materials such as silicon nitride, silicon oxide, benzocyclobutene phosphorus (BCB), polyester, and acrylic resin. The transparent protective film 126 may be a plastic layer (eg, a polyethylene terephthalate film, that is, a PET film) that prevents the surface from being smooth and bumpy by a hardening treatment. The transparent protective film 126 may protect the first electrode plate 12, thereby improving durability of the touch panel. The transparent protective film 126 may have an additional function such as glare or a function of reducing reflection.

In the touch panel 10 of the present invention, a shield layer (not shown) may be provided on the lower surface of the second substrate. As a result, electromagnetic interference generated by the display device can be reduced to prevent the touch panel 10 from outputting an incorrect signal. The shield layer may be formed of a transparent conductive material such as an indium tin oxide (ITO) thin film, an antimony tin oxide (ATO) thin film, a nickel thin film, a silver thin film, or a carbon nanotube structure. In this embodiment, the shield layer is formed by a carbon nanotube film. The arrangement of the carbon nanotubes in the carbon nanotube film is not limited. That is, the carbon nanotubes may be arranged isotropically, may be arranged in a preferred direction along the same direction or in different directions, or may be arranged in other arrangements. In this embodiment, the carbon nanotubes in the shield layer are arranged in a preferential direction along the other direction. The carbon nanotube film serves as a shielding device as an earth element to allow the touch panel 10 to operate in an environment free from electromagnetic interference.

Hereinafter, a manufacturing method of the touch panel 10 according to the present invention will be described in detail with reference to the drawings.

7 is a flowchart of a manufacturing method of the touch panel 10 according to the present invention. In the method of manufacturing the touch panel 10 of the present invention, the process of providing the first substrate 120 and the second substrate 140, and the surface of the first substrate 120 and the second substrate 140 Forming a carbon nanotube structure to form a first electrode plate 12 and a second electrode plate 14, and two first electrodes 122 spaced apart from the first electrode plate 12, respectively. Two second electrodes 142 on the second electrode plate 14 at intervals, and the carbon nanotube structure of the first electrode plate 12 and the second electrode plate 14 And installing the carbon nanotube structures facing each other.

Specific manufacturing method of the touch panel 10 is as follows.

Process 1: The first substrate 120 and the second substrate 140 are provided.

As a material of the first substrate 120 and the second substrate 140, a hard material such as glass, quartz, diamond and plastic or a flexible material such as a polyester film is used. In the present embodiment, the first substrate 120 is formed of a polyester film, and the second substrate 140 is formed of glass.

Process 2: The first electrode plate 12 and the second electrode plate 14 are formed by forming carbon nanotube structures on the surfaces of the first substrate 120 and the second substrate 140, respectively.

The carbon nanotube structures contain a plurality of uniformly distributed carbon nanotubes. The carbon nanotube structures formed on the first electrode plate 12 and the second electrode plate 14 may be formed by a drawing film, a press film, or a filling film of the carbon nanotubes.

(A) When the carbon nanotube structure is formed of a drawing film, the step 2 further includes the following manufacturing procedure.

(1) First, a carbon nanotube array is provided. Preferably, the array is a superaligned carbon nanotube array.

The carbon nanotube array according to the present invention is a single wall carbon nanotube array, a double wall carbon nanotube array or a multiwall carbon nanotube array.

In the present embodiment, the growth method of the super-aligned carbon nanotube array is chemical vapor deposition (CVD). The process is as follows.

(a) provide a very flat growth substrate. As the growth substrate, a P-type or N-type silicon wafer or a silicon wafer having an oxide layer formed on its surface can be used. In this embodiment, a 4 inch silicon wafer is used as the growth substrate.

(b) A uniform catalyst layer is formed on the surface of the growth substrate. As the material of the catalyst layer, one of alloys of iron (Fe), cobalt (Co), nickel (Ni) or any combination of the above metals can be used.

(c) An annealing process is performed on the growth substrate on which the catalyst layer is formed for about 30 to 90 minutes in air at 700 to 900 ° C.

(d) The growth substrate subjected to the annealing treatment is placed in a reactor with a protective gas and heated to 500 to 740 ° C. Thereafter, a carbon source gas is injected into the reactor and reacted for about 5 to 30 minutes to grow carbon nanotubes on the growth substrate. This yields a carbon nanotube array. The carbon nanotube array has a height of 200 μm to 400 μm. The carbon nanotube array is a pure carbon nanotube array formed of a plurality of carbon nanotubes grown in parallel with each other and perpendicular to the growth substrate. That is, by the control of the growth conditions described above, almost no unnecessary material (amorphous carbon or catalyst metal granules) is present in the grown carbon nanotube array. In the carbon nanotube array, the carbon nanotubes are closely connected to each other by the force of van der Waals to form an array. The area of the carbon nanotube array and the growth substrate is approximately equal.

As the carbon source gas, ethylene (C ₂ H ₄ ), methane (CH ₄ ), acetylene (C ₂ H ₂ ), and the like, which are relatively active in chemical properties, may be used. As the protective gas, nitrogen or an inert gas may be used. have. In this embodiment, acetylene is used as the carbon source gas, and argon gas is used as the protective gas.

The growth method of the carbon nanotube array is not limited to the chemical vapor deposition method, and the carbon nanotube array may also be grown by the graphite electrode arc deposition method or the laser evaporation method.

(2) Next, at least one drawing film is taken out from the carbon nanotube array described above with a drawing tool.

Specific manufacturing method of the drawing film is as follows.

(a) Select a plurality of carbon nanotube fragments of constant width in the carbon nanotube array described above. In this embodiment, a tool having a constant width is contacted with the carbon nanotube array to select a plurality of carbon nanotube fragments of constant width.

(b) drawing the plurality of carbon nanotube fragments at a constant speed along a direction substantially perpendicular to the growth direction of the carbon nanotube array to obtain a drawing film of continuous carbon nanotubes.

In the drawing process, the plurality of carbon nanotube fragments are gradually separated from the growth substrate in the direction of the force by the action of the pulling force. At this time, the ends of the separated carbon nanotube fragments are connected to the ends of the other carbon nanotube fragments by van der Waals' forces, respectively, to form a continuous film, that is, a drawing layer.

As shown in FIG. 3, the drawing film contains a plurality of carbon nanotubes, and the carbon nanotubes are films having a constant width formed by being arranged in a forward direction along a direction in which ends and ends are continuously connected and drawn. The arrangement direction of the carbon nanotubes in the drawing film is substantially parallel to the drawing direction. The drawing film has better uniformity than the carbon nanotube film in which the carbon nanotubes are arranged randomly. That is, the thickness and the conductance of the drawing film in which the carbon nanotubes are arranged in the preferential direction are more uniform. In addition, the manufacturing method of the drawing film is simple and quick and is applied to industrialization applications.

The width of the drawing film is related to the size of the growth substrate on which the carbon nanotube array is grown, and is not limited to the length of the drawing film. That is, the length is determined by actual demand. In this embodiment, a super-aligned carbon nanotube array is grown on a 4 inch growth substrate. The width of the drawing film is in the range of 0.01 cm to 10 cm, and the thickness is in the range of 0.5 nm to 100 m.

Compared with the manufacturing method of the ITO layer, the drawing film manufacturing method described above is obtained by drawing the carbon nanotube array directly with the drawing tool since the drawing film as the transparent conductive layer does not require a vacuum environment or a heating process. Therefore, in manufacturing the transparent conductive layer, the manufacturing cost is low, and there are advantages such as environmental protection and energy saving. Therefore, also in the manufacture of the touchscreen which concerns on this invention, manufacturing cost is low and there exist advantages, such as environmental protection and energy saving.

(3) Carbon nanotube structures are respectively provided on the surfaces of the first substrate 120 and the second substrate 140. The carbon nanotube structure is formed by at least one drawing film.

Purity of the carbon nanotubes in the super-aligned carbon nanoarray according to the present invention is very high, and since the carbon nanotubes themselves have a very large specific surface area, the drawing film itself has very good adhesion. . Accordingly, the drawing layer may be directly adhered to the surfaces of the first substrate 120 and the second substrate 140 as the conductive layers 122 and 142. When the carbon nanotube structure according to the present invention contains a plurality of drawing films, the plurality of drawing films are arranged on the surfaces of the first substrate 120 and the second substrate 140 in the same direction or in different directions. Can be glued or superimposed.

In addition, the drawing film adhered to the surfaces of the first substrate 120 and the second substrate 140 may be treated with an organic solvent. In the process of treating the drawing film with an organic solvent, the organic solvent is dropped on the surface of the drawing film by a dropping tube to completely penetrate the drawing film. As the organic solvent, volatile organic solvents such as ethanol, acetone, dichloroethane and chloroform are used. In this embodiment, ethanol is used as the organic solvent. In the drawing film after the organic solvent treatment, the drawing film may be firmly attached to the surfaces of the substrates 120 and 140 under the action of the surface tension of the volatile organic solvent. For this reason, the drawing film has a small surface volume ratio (surface / volume), poor adhesion, and excellent mechanical strength and toughness.

(B) When the carbon nanotube structure is formed of a filling film, Step 2 further includes the following manufacturing procedure.

(1) Provide carbon nanotube raw materials.

The procedure for obtaining the carbon nanotube raw material according to the present invention is as follows.

(a) First, a carbon nanotube array is grown on a substrate. The carbon nanotube array can be grown by chemical vapor deposition, graphite electrode arc deposition, laser deposition, or the like. The carbon nanotube array contains a plurality of relatively long and entangled carbon nanotubes.

(b) Next, carbon nanotubes are scraped from the substrate with a knife or other tool to obtain carbon nanotube raw materials. In the carbon nanotube raw material, the carbon nanotubes are entangled with each other to some extent. The length of the carbon nanotubes in the carbon nanotube raw material is greater than 10 μm.

(2) The carbon nanotube raw material filling treatment described above is carried out to obtain a packed film having a carbon nanotube structure in this example. The carbon nanotube structures are installed on the surfaces of the first substrate 120 and the second substrate 140, respectively.

In the present invention, the carbon nanotube raw material filling treatment is performed to obtain a filling film having a carbon nanotube structure in the present embodiment, and the first and second substrates 120 and 140 are respectively provided on the surfaces of the first and second substrates 140. There are two ways.

First method: Filling carbon nanotube raw material in one kind of solvent and filling to obtain packed carbon nanotube. Next, the packed-phase carbon nanotubes are filtered under reduced pressure (suction filtration) to obtain a carbon nanotube structure. Finally, the carbon nanotube structures are respectively installed on the surfaces of the first substrate 120 and the second substrate 140.

Second method: The carbon nanotube raw material is placed in one kind of solvent and subjected to filling to obtain a packed carbon nanotube. The packed carbon nanotubes are then separated from the solvent. The packed carbon nanotubes are spread evenly on the surface of the first and second substrates 120 and 140, and a constant pressure is applied to the unpacked packed carbon nanotubes. Finally, the carbon nanotube structures obtained by drying the solvent remaining in the packed carbon nanotubes are formed on the surfaces of the first substrate 120 and the second substrate 140. Such drying includes drying by heating or drying by natural volatilization of a solvent.

As said solvent, water or a volatile organic solvent can be used. The filling treatment includes an ultrasonic dispersion treatment or a high intensity stirring treatment. Preferably, the ultrasonic dispersion treatment is performed for about 10 to 30 minutes. Since the carbon nanotubes have a very large specific surface area, there is a relatively large van der Waals' force between the intertwined carbon nanotubes. In the above-described filling treatment, the carbon nanotubes in the carbon nanotube raw material are not completely dispersed in the solvent and are attracted and entangled in a network structure by van der Waals forces.

The specific procedure for obtaining the carbon nanotube structure by the above-described vacuum filtration is as follows.

(a) First, a microporous membrane and a pressure filtration funnel are provided.

(b) Next, the solvent containing the above-mentioned packed carbon nanotubes is poured into the vacuum filter funnel through the microporous filtration membrane.

(c) Finally, the pressure is reduced and dried to obtain a carbon nanotube structure.

The microporous filtration membrane is a filtration membrane with smooth one side and a pore diameter of 0.22 μm. In the above-mentioned reduced pressure filtration, the reduced pressure filtration itself provides a relatively large atmospheric pressure. During filtration, the relatively large atmospheric pressure acts on the packed carbon nanotubes, so that the carbon nanotube structure with uniform distribution of carbon nanotubes can be directly obtained. The carbon nanotube structure is cut into the required shape and installed on the surfaces of the first substrate 120 and the second substrate 140 through an adhesive.

The packed-phase carbon nanotube separation in the present invention is carried out as follows.

The solvent containing the packed carbon nanotubes is poured into a funnel having filter paper, followed by drying for a predetermined time to separate the packed carbon nanotubes from the solvent.

In addition, the separated packed carbon nanotubes are spread evenly on any substrate and a constant pressure is applied to the packed carbon nanotubes. Finally, the solvent remaining in the packed carbon nanotubes is dried to obtain a carbon nanotube structure. The carbon nanotube structure is cut into the required shape and then bonded to the surfaces of the first substrate 120 and the second substrate 140.

The thickness and surface density of the carbon nanotube structures according to the present invention are determined by the unfolded area of the packed carbon nanotubes. In other words, the larger the unfolded area of the packed carbon nanotube, the smaller the thickness and surface density. The pressure applied to the packed carbon nanotubes may determine an area in which the packed carbon nanotubes are unfolded. The preferred thickness of the carbon nanotube structure is 0.5 nm to 1 mm.

Referring to FIG. 5, the filling film having the carbon nanotube structure in this embodiment contains a plurality of carbon nanotubes intertwined with each other. The carbon nanotubes are isotropically arranged in the carbon nanotube structure. Since the carbon nanotubes are attracted and entangled with each other by van der Waals forces to form a network structure, the carbon nanotube structure has excellent toughness. The network structure includes a large amount of microporous structure. The pore size of the microporous structure is smaller than 10 μm.

(C) When the carbon nanotube structure is formed of a press film, the step 2 further includes the following manufacturing procedure.

(1) First, a growth substrate on which a carbon nanotube array is formed is provided. Preferably the array is a superaligned carbon nanotube array.

The chemical vapor deposition method is used as a growth method of the super-aligned carbon nanotube array in this embodiment. The growth method of the ultra-aligned carbon nanotube array is the same as the growth method described above. In addition, growth of the super-aligned carbon nanotube array according to the present invention is not limited only to chemical vapor deposition. That is, the carbon nanotube array can be grown by the graphite electrode arc deposition method or the laser deposition method.

(2) Next, the carbon nanotube array is pressed with a press device to form a press film having a carbon nanotube structure in this embodiment. Next, the carbon nanotube structures are installed on the surfaces of the first substrate 120 and the second substrate 140, respectively. The thickness of the press film is 0.5 nm to 1 mm.

Since the carbon nanotubes have excellent adhesion, the carbon nanotube array made of the carbon nanotubes may be firmly adhered to the surfaces of the first substrate 120 and the second substrate 140. Next, by pressing the first substrate 120 and the second substrate 140 to which the carbon nanotube array is bonded, the carbon nanotube structure on the surface of the first substrate 120 and the second substrate 140 To form.

There are two methods for forming a carbon nanotube structure on the surfaces of the first substrate 120 and the second substrate 140.

First method: Press pressure is applied to the carbon nanotube array with a press device. In the process of applying the pressure, the carbon nanotube array is a carbon nanotube membrane having a self-support structure consisting of a plurality of carbon nanotubes separated from the growth substrate under the action of the pressure, that is, press membrane Form. Next, the carbon nanotube film is adhered to the surfaces of the first substrate 120 and the second substrate 140 with a conductive adhesive such as silver paste.

Second method: The carbon nanotube array is directly coated on one surface of the first substrate 120 and the second substrate 140, and then the other of the first substrate 120 and the second substrate 140 is pressed by a press device. Apply constant pressure to one surface. In the process of applying the pressure, the carbon nanotube array is a carbon nanotube membrane having a self-supporting structure consisting of a plurality of carbon nanotubes by separating the carbon nanotube array from a growth substrate under the action of the pressure and the first substrate. It is formed on one surface of the 120 and the second substrate 140.

Further, in the process of applying pressure, the carbon nanotube array is separated from the growth substrate under the action of the pressure to form a carbon nanotube film having a self-supporting structure composed of a plurality of carbon nanotubes. . In the carbon nanotube membrane, the plurality of carbon nanotubes are substantially parallel to the surface of the carbon nanotube membrane.

In this embodiment, a pressure head having a smooth surface is used as the press apparatus. The arrangement of the carbon nanotubes in the press film is determined by the shape of the pressure head and the pressing direction of the pressure head.

That is, by using a planar pressure head and pressing in a direction perpendicular to the substrate on which the carbon nanotube array is grown, a carbon nanotube film having a plurality of carbon nanotubes isotropically arranged can be obtained.

Further, by using a roller pressure head and pressing in a certain fixed direction, a carbon nanotube film (see Fig. 5) in which a plurality of carbon nanotubes is arranged along the fixed direction described above can be obtained.

In addition, when the roller pressure head is used and pressed along different directions, a carbon nanotube film (see FIG. 4) in which a plurality of carbon nanotubes are arranged along the above-described different directions can be obtained.

Pressing the carbon nanotube array in the other way described above, the carbon nanotubes are inclined under the action of pressure and the adjacent carbon nanotubes are connected to each other by the suction of van der Waals' forces. have. The carbon nanotube film has a self-supporting structure formed by the plurality of carbon nanotubes described above. The plurality of carbon nanotubes are substantially parallel to the surface of the carbon nanotube membrane and are arranged along some fixed or other direction. In addition, since the carbon nanotube array is pulled away from the growth substrate under the action of the pressing pressure, the carbon nanotube array can be easily separated from the substrate.

One of ordinary skill in the art will appreciate that the inclination of the carbon nanotube array is determined by the pressing pressure. For example, the larger the pressure, the larger the inclination angle. In addition, it can be seen that the thickness of the carbon nanotube film is determined by the height of the carbon nanotube array and the pressure to be pressed. For example, the larger the height of the carbon nanotube array and the smaller the pressure to press, the thicker the carbon nanotube film is, and the smaller the height of the carbon nanotube array and the higher the pressing pressure, the thinner the carbon nanotube film.

In addition, in the carbon nanotube film according to the present embodiment, the carbon nanotubes may form a constant angle (α) with the surface of the carbon nanotube film. The range of the angle α is greater than or equal to 0 degrees and less than or equal to 15 degrees. That is, 0 degrees ≤ α ≤ 15 degrees. The said angle (alpha) and the electroconductivity of a carbon nanotube film are related. That is, the smaller the angle α, the higher the conductivity of the carbon nanotube film, and the larger the angle α, the lower the conductivity of the carbon nanotube film.

8 and 9, when the substrates (ie, the first substrate and the second substrate) are flexible substrates, forming the carbon nanotube structure on the flexible substrates may provide a thermocompression bonding apparatus 80. It can be realized through. The specific procedure is as follows.

(a) First, a flexible substrate 82 coated with at least one carbon nanotube structure is placed in a thermocompression apparatus 80 with a roller.

The thermocompression device 80 has a pressing device 84 and a heating means (not shown). In this embodiment, the thermocompression apparatus 80 is a hot-press apparatus, and the crimping means 84 is two metal rollers.

(b) Next, the roller in the thermocompression bonding apparatus 80 is heated. That is, the two rollers are heated by the heating device in the thermocompression bonding apparatus 80. Heating temperature in a present Example is 110 degreeC-120 degreeC. The temperature at which the roller is heated can be determined based on actual demand.

(c) Finally, the flexible substrate 82 coated with the carbon nanotube structure is passed through a heated roller.

In this embodiment, the first substrate 120 and the second substrate 140 coated with the carbon nanotube structure are slowly passed through the heated metal pair rollers. The passing speed is from 1 mm / minute to 10 m / minute.

The heated roller applies a predetermined pressure to the first substrate 120 and the second substrate 140 on which the carbon nanotube structure is coated, while the carbon nanotube structure and the first substrate 120 and the first substrate 120 are applied. The second substrate 140 is softened to drive air between the carbon nanotube structure and the first substrate 120 and the second substrate 140. As a result, the carbon nanotube structure may be closely adhered to surfaces of the first substrate 120 and the second substrate 140.

Further, the speed passing through the roller can be arbitrarily selected from the above speed range based on actual demand. That is, the carbon nanotube structure can be arbitrarily selected in the above speed range as long as it can secure only tight adhesion to the surface of the flexible substrate. A low melting point material is coated on the surface of the flexible substrate and the carbon nanotube structure is coated thereon. In the thermocompression process, the temperature must be ensured to fuse the low melting point material. For this reason, after carrying out thermocompression bonding, the low melting point material bonds the carbon nanotube structure to the flexible substrate. In this invention, the range of temperature is not limited to said temperature range (110 degreeC-120 degreeC). In addition, the temperature of a hot-press device can vary depending on the different melting points of different materials. The temperature only needs to be able to fuse the material having a low melting point. In this embodiment, the first substrate 120 is made of a polyester film, and the first conductive layer 122 and the second conductive layer are formed by the above-mentioned thermocompression press.

Process 3: Two first electrodes 124 are provided on the first electrode plate 12 at intervals, and two second electrodes 144 are provided on the second electrode plate 14 at intervals. The carbon nanotube structure in the first electrode plate 12 and the carbon nanotube structure in the second electrode plate 14 are disposed to face each other. Thus, a touch panel is obtained.

In the present embodiment, both the first electrode 124 and the second electrode 144 are formed of conductive silver paste. The method of forming the first electrode 124 and the second electrode 144 is as follows.

(a) First, the conductive silver paste is applied to the carbon nanotube structures of the first electrode plate 12 and the second electrode plate 14 by silkscreen, pad printing, or spraying. Apply. In the first electrode plate 12, the conductive silver paste is applied to both ends of the carbon nanotube structure in the first direction, and in the second electrode plate 14, the carbon nanotube in the second direction. The conductive silver paste is applied to both ends of the structure.

(b) Next, the first electrode plate 12 and the second electrode plate 14 are placed in an oven and baked for about 10 to 60 minutes to solidify the conductive silver paste. The baking temperature is 100 ° C to 120 ° C. Accordingly, the first electrode 124 and the second electrode 144 are formed. Since the first direction and the second direction are perpendicular to each other, the first electrode 124 and the second electrode 144 are installed vertically with each other.

As the material of the insulating layer 18, an insulating resin or other insulating material can be used. In this embodiment, the insulating layer 18 is a transparent insulating bond. The first electrode plate 12 and the second electrode plate 14 are bonded to each other by an insulating bond. The insulating bond may be applied to outer peripheries of the first electrode plate 12 and the second electrode plate 14. In addition, the plurality of dot spacers 16 may be provided in a visible region other than the insulating bond between the first electrode plate 12 and the second electrode plate 14, and the first electrode plate 12 may be disposed. 12) and unnecessary electrical contact between the second electrode plate 14 is prevented.

The transparent protective film 126 may be a plastic layer that prevents the surface from being bumpy and smooth by hardening. For example, it can be set as a polyethylene terephthalate (PET) film. The transparent protective film 126 protects the first electrode plate 12 to improve durability of the touch panel 10. In the present exemplary embodiment, since the transparent protective film 126 is an adhesive PET film, the transparent protective film 126 may be directly attached to the surface of the touch panel 10 to protect the touch panel 10.

10 is a cross-sectional view of a display system 100 using a touch panel 10 according to the present invention.

The display system 100 includes a touch panel 10 and a display device 20. The display device 20 is installed to face the second electrode plate 14 of the touch panel 10. The touch panel 10 may be installed at regular intervals from the display device 20, or may be directly installed on the display device 20. When the touch panel 10 is directly installed on the display device 20, the touch panel 10 is attached to the display device 20 by an adhesive.

As the display device 20, a liquid crystal display (LCD), a field emission display (FED), a plasma display (PDP), an electroluminescence display (ELD), a vacuum fluorescent display (VFD) and a cathode ray tube display device (CRT) and the like.

The shield layer 22 may be additionally installed on the lower surface of the second substrate 140 of the touch panel 10. A passivation layer 24 may be further provided on the surface of the shield layer 22 far from the second substrate 14. The passivation layer 24 is formed of a material such as silicon nitride, silicon oxide, or the like. An isolation part 26 having a predetermined interval may be further provided between the passivation layer 24 and the display device 20. The passivation layer 24 may be a dielectric layer to prevent the display device 20 from being damaged by a large external force.

In addition, the display system 100 may further include a touch panel control means 30, a CPU 40, and a display device control means 50. The touch panel control means 30, the CPU 40, and the display device control means 50 are connected to each other by a circuit. In addition, the touch panel control means 30 is electrically connected to the touch panel 10, and the display device control means 50 is electrically connected to the display device 20. The touch panel control means 30 selects information input based on a position of a symbol or a menu contacted by the contact member 60 such as a finger, and transmits the input information to the CPU 40. The CPU 40 controls the display of the display device 20 through the display device control means 50.

When the display system 100 is used, a voltage of 5 volts V is applied between the first electrode plates 12 and the second electrode plates 14, respectively. The user visually checks the contents displayed on the display device 20 on the rear surface of the touch panel 10, while pressing the first electrode plate 12 of the touch panel 10 with a finger or a pen. The operation is performed on the electronic device using the system 100. At this time, the first substrate 120 of the first electrode plate 12 causes deformation, so that the first conductive layer 122 and the second electrode plate of the first electrode plate 12 of the compression region 70 are deformed. The second conductive layer 142 of 14 is in electrical contact. In this case, the touch panel control means 30 measures the voltage change in the first direction of the first conductive layer 122 and the voltage change in the second direction of the second conductive layer 142, respectively. After accurately calculating and converting the voltage change information to coordinates, the digitized coordinates are transmitted to the CPU 40. The CPU 40 outputs a corresponding command based on the coordinates to realize switching between various functions of the electronic device. As a result, the display device 20 is displayed on the display device 20 under the control of the display device control means 50.

11 is a cross-sectional view of the touch control device 110 using the display system 100 according to the present invention.

As shown in FIG. 11, the touch type control device 110 includes a transparent substrate 28 and a display system 100. The display system 100 includes a display device 20 and a touch panel 10. The display device 20 is installed on the transparent substrate 28. The display device 20 includes a display panel, which is on a surface of the display device 20 that is far from the transparent substrate 28.

The transparent substrate 28 in this embodiment is a windshield. The display device 20 is installed on an inner surface of the windshield. Specifically, the display device 20 is bonded to the inner surface of the windshield with an adhesive, and the front side thereof faces the inside of the vehicle.

In addition, in order not to affect the driver's operation, the display device 20 is installed on the upper inner surface of the windshield or on the inner surface of the windshield relatively far from the driver.

The touch panel 10 is installed on the display device 20. The electric power required by the touch panel 10 and the display device 20 is provided by a battery installed in an automobile. Specifically, the touch panel 10 and the display device 20 are electrically connected to a transformer through a conductor, and the transformer is electrically connected to a storage battery installed in an automobile. In order not to affect the driver's operation, the conductor may be installed along the perimeter of the windshield.

12 is a perspective view of a notebook 200 using the touch panel 10 according to the present invention.

As shown in FIG. 12, the notebook computer 200 includes a display device 280, a main body 290, and a touch panel 10. The display device 280 includes a display panel 281, the main body 290 is installed on a surface of the display device 280 remote from the display panel 281, and the touch panel 10 is The display device is provided on the display panel 281 of the display device 280.

The display device 280 in this embodiment is a liquid crystal display (LCD), a field emission display device (FED), a plasma display device (PDP), an electroluminescent display device (ELD), a vacuum fluorescent display device (VFD), or the like. Can be.

The display device 280 displays a screen and data output by the main body 290. In the present embodiment, the display device 280 is a liquid crystal display device. In addition, in the notebook 200 according to the present invention, since the display device 280, the main body 290, and the touch panel 10 are integrally installed, the display device 280 and the main body 290. And an electrical connection between the touch panel 10 through an output port (not shown) and / or an input port (not shown) installed in the notebook 200. In this embodiment, the touch panel 10 is electrically connected to the main body 290 through its output port (not shown) and the input port of the main body 290 installed inside the notebook 200. The display device 280 is electrically connected to the main body 290 through its output port and an input port of the main body 290 installed inside the notebook 200.

In addition, at least one input port 260 and at least one output port 270 may be additionally installed on a side of the main body 290 of the notebook 200 for the user's convenience in using the notebook 200. have. Information may be input to the notebook 200 by connecting a mouse and / or a keyboard to the input port 260 and the output port 270.

The main body 290 includes components such as a mainboard, a central processing unit, a memory, and a hard drive. The main board includes a system bus, a data bus, a control bus, various sockets, pods, and the like. The central processing unit, memory, display card, sound card, network interface card (NIC), video card, etc. are assembled into the motherboard. A hard drive, a power source, and the like assembled to the main body 290 are electrically connected to the main board through a cable. One end of the display card is electrically connected to a corresponding output pod installed inside the main body 290 to output the information after the main body 290 to the display device 280. In the main board, components such as a main body switch, an indicator light, a power switch, a hard drive indicator, and a power indicator may be inserted into corresponding positions. In addition, two loudspeakers 294 and a disc drive unit 292 may be further provided on the side of the main body 290.

The touch panel 10 has an information input function. A user inputs information into the main body 290 by touching or pressing the touch panel 10 with a finger or a pen. The area of the touch panel 10 may be equal to the area of the display panel 281 of the display device 280. The touch panel 10 may be attached to the display panel 281 of the display device 280 by an adhesive. When the area of the touch panel 10 is smaller than the area of the display panel 281 of the display device 280, a plurality of touch panels 10 are installed on the display panel 281 of the display device 280. Can be. This makes it possible to realize different functions at the same time. Since the input information of the touch panel 10 may be command information and text information, the mouse and keyboard of the conventional notebook may be replaced. In addition, the screen keyboard 282 may be displayed on the display panel 281 of the display device 280 to realize diversified information input. Thus, character information can be directly input by touching the touch panel 10.

13 is a perspective view of a desktop computer 300 using the touch panel 10 according to the present invention.

As shown in FIG. 13, the desktop computer 300 includes a main body 302, a display device 304, and a touch panel 10. The display device 304 is connected to the main body 302 through a data line 308. The display device 304 includes a display panel 306. The touch panel 10 is installed on the surface of the display panel 306.

The main body 302 includes components such as a main board, a central processing unit, a memory, and a hard drive. The main board includes a system bus, a data bus, a control bus, various sockets and ports, and the like. The central processing unit, memory, display card, sound card, network management interface card, video card, etc. are assembled into the motherboard. A hard drive, a power source, or the like assembled to the main body 302 is electrically connected to the main board through a cable. The main body 302 may further include a touch panel control means and a display device control means. The touch panel control means is electrically connected to the central processing unit. The CPU receives data on the compressed portion from the touch panel control means, processes the data, and outputs the data to the display device control means. At this time, the display device control means controls the display of the display device 304 based on the data after the processing. In the main board, components such as a main body switch, an indicator light, a power switch, a hard drive indicator, and a power indicator may be inserted into corresponding positions. In addition, two loudspeakers (not shown) and a disk drive (not shown) may be additionally installed on the side of the main body 302.

In addition, at least one input / output port (not shown) may be installed on a side of the main body 302 of the desktop computer 300. The input / output port is used to connect the display device 304 and the touch panel 10 to the main body 302. In this embodiment, the body 302 has at least two input / output ports. The display device 304 and the touch panel 10 are connected to the input / output port by a data line 308. In the desktop computer 300 according to the present invention, the main body 302 and the display device 304 may be integrally installed. In this case, the display device 304 may be installed on one side of the main body 302.

In the present embodiment, the display device 304 includes a liquid crystal display (LCD), a field emission display device (FED), a plasma display device (PDP), an electroluminescence display device (ELD), and a vacuum fluorescent display device (VFD). And the like. The display device 304 displays data and a screen output from the main body 302. Preferably, the display device 304 is a liquid crystal display device.

The touch panel 10 has an information input function. A user inputs a signal to the main body 302 by touching or pressing the touch panel 10 with a finger or a pen. The area of the touch panel 10 may be equal to the area of the display panel 306 of the display device 304. The touch panel 10 may be attached to the display panel 306 of the display device 304 by an adhesive. When the area of the touch panel 10 is smaller than the area of the display panel 306 of the display device 304, a plurality of touch panels 10 may be installed on the display panel 306 of the display device 304. have. This makes it possible to realize different functions at the same time. Since the input signal of the touch panel 10 may be a command signal and a text signal, the mouse and keyboard of the conventional desktop computer may be replaced. In addition, a screen keyboard (not shown) may be displayed on the display panel 306 of the display device 304 to realize diversified signal input. Thus, the text signal can be directly input by touching the touch panel 10.

In addition, for convenient use by the user for the desktop computer 300, the desktop computer 300 may further include a mouse and / or a keyboard (not shown). The mouse and / or keyboard is connected to the input / output port of the body 302 via a cable.

The touch panel 10 may be installed at regular intervals on the display panel 306 of the display device 304, or may be installed integrally with the display panel 306. When the touch panel 10 is installed integrally with the display panel 306, the touch panel 10 is directly attached to the surface of the display panel 306 with an adhesive, or the touch panel 10 The display panel 306 may be installed to share the substrate (that is, the lower surface of the second substrate 140 of the touch panel 10 is used as the display surface of the display panel 306). In the present embodiment, the touch panel 10 is installed in a state in which the display panel 306 and the substrate are shared.

14 is a perspective view of a personal digital assistant (PDA) 400 using a touch panel 10 according to the present invention.

As shown in FIG. 14, the PDA 400 includes a main body 402 and a touch panel 10. The main body 402 is provided with a display device 404. The touch panel 10 is installed on the surface of the display device 404.

The body 402 may further include a housing, a central processing unit, a storage unit, and a control unit. The central processing unit, storage unit, control unit and display unit 404 are all provided in the housing.

The central processing unit, the memory unit and the control unit may be integrated and installed in one integrated circuit board. The memory device and the control device are each electrically connected to the central processing unit via leads on the integrated circuit board. The touch panel 10 and the display device 404 are each electrically connected to the control device.

The control device generally includes a touch panel controller, a display panel controller, and a multifunction controller, each corresponding to the touch panel 10, the display device 404, and various functions (e.g., memorandum, dictionary, communication and remote operation, etc.). Function).

The storage device serves to store data and operation results necessary for the control of the central processing unit. The memory device may generally include a read only memory (ROM), a random access memory (RAM), and an erasable programmable read only memory (EPROM).

The ROM functions to store data which will not be changed by the system software, and the RAM functions to store data obtained after processing the information input by the user, and the EPROM is data of the PDA 400 and the calculator. It works to proceed with the exchange. When the information in the PDA 400 is input into the calculator, the system software stored in the EPROM is operated through the central processing unit to process the corresponding information and transmit the information to the calculator. When information is input from the calculator to the PDA 400, the central processing unit operates the system software stored in the EPROM to process the corresponding information and transmit the information to the display panel and / or the temporary storage device.

In the present embodiment, the display device 404 includes a liquid crystal display (LCD), a field emission display device (FED), a plasma display device (PDP), an electroluminescent display device (ELD), a vacuum fluorescent display device (VFD), and the like. It is a kind of. The display device 404 displays data and a screen output from the main body 402. Preferably, the display device 404 is a liquid crystal display device.

The touch panel 10 may be installed at regular intervals on the display panel of the display device 404, or may be integrated with the display panel of the display device 404. When the touch panel 10 is installed integrally with the display panel of the display device 404, the touch panel 10 is directly attached to the surface of the display panel of the display device 404 with an adhesive, or The touch panel 10 may be installed to share the substrate of the display panel of the display device 404 (that is, the lower surface of the second substrate 140 of the touch panel 10 may be disposed on the display device 404). To display surface). The touch panel 10 has an information input function. A user inputs information into the main body 402 by touching or pressing the touch panel 10 with a finger or a pen.

The area of the touch panel 10 may be equal to the area of the display panel of the display device 404. In addition, according to the demand of use, a screen keyboard (not shown) may be displayed on the display panel of the display device 404. The operation purpose can be achieved by touching the screen keyboard displayed on the display panel of the display device 404. In the present embodiment, the touch panel 10 is installed in a state in which the display panel of the display device 404 and the substrate are jointly used.

15 is a perspective view of the mobile phone 500 using the touch panel 10 according to the present invention.

As shown in FIG. 15, the mobile phone 500 includes a main body 502 and a touch panel 10. The main body 502 is provided with a display device 504. The touch panel 10 is installed on the surface of the display panel of the display device 504.

The main body 502 may further include a housing 590, a communication unit, a processing device, a control device, and a storage device. The call unit includes an antenna 592, a handset 594 and a handset 596. The processor, controller, memory, handset 596, transmitter 594 and display 504 are all provided in the housing 590. The antenna 592 is installed inside the housing 590, or is provided in the form of a protrusion on the outside of the housing 590.

The processor, memory and controller can be integrated and installed on one integrated circuit board. The memory device and the control device are each electrically connected to the processing device via a lead on the integrated circuit board.

The antenna 592, the handset 594, the handset 596, the touch panel 10, and the display device 504 are each electrically connected to the control device.

The control apparatus generally includes a touch panel controller, a display panel controller, and a communication controller, each of which includes a touch panel 10, a display device 504, and a communication unit (i.e., an antenna 592, a transceiver 594, and a receiver). 596).

The storage device may generally have a ROM and a RAM. The storage device functions to store instructions processed and executed by the processing device and various information displayed on the display panel of the display device 504.

The antenna 592 transmits and receives a radio signal of a radio frequency (RF). The RF radio signal received by the antenna 592 is transmitted to the processing apparatus and converted into a voice signal by the processing apparatus. Emission of the voice signal through the receiver 596 is controlled by the controller.

The talker 594 receives a voice signal and transmits it to the processing device. The processing device converts the voice signal into an RF wireless signal. The transmission by the antenna 592 of the switched RF radio signal is controlled by the controller.

In the present embodiment, the display device 504 includes a liquid crystal display (LCD), a field emission display device (FED), a plasma display device (PDP), an electroluminescence display device (ELD), and a vacuum fluorescent display device (VFD). It is a kind of back. The display device 504 displays data and a screen output from the main body 502. Preferably, the display device 504 is a liquid crystal display device.

The touch panel 10 may be installed at regular intervals on the display panel of the display device 504, or may be integrated with the display panel of the display device 504. When the touch panel 10 is installed integrally with the display panel of the display device 504, the touch panel 10 is directly attached to the surface of the display panel of the display device 504 with an adhesive, or The touch panel 10 may be installed to share the substrate of the display panel of the display device 504 (that is, the lower surface of the second substrate 140 of the touch panel 10 may be disposed on the display device 504). To display surface). The touch panel 10 has an information input function. A user inputs information into the main body 502 by touching or pressing the touch panel 10 with a finger or a pen.

The area of the touch panel 10 may be equal to the area of the display panel of the display device 504. In addition, according to the demand of use, a screen keyboard (not shown) may be displayed on the display panel of the display device 504. The purpose of the operation can be achieved by touching the screen keyboard displayed on the display panel of the display device 504. In the present embodiment, the touch panel 10 is installed in a state in which the display panel of the display device 504 and the substrate are jointly used.

As mentioned above, although this invention was demonstrated using the preferable Example, the scope of the present invention is not limited to a specific Example and should be interpreted by the attached Claim. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

1 is a perspective view of a touch panel according to the present invention.

2 is a cross-sectional view of a touch panel according to the present invention.

3 is an electron micrograph of a packed carbon nanotube according to the present invention.

4 is an electron micrograph of a press film in which carbon nanotubes according to the present invention are arranged along the same direction.

5 is an electron micrograph of a press film in which carbon nanotubes according to the present invention are arranged along different directions.

6 is an electron micrograph of a drawing film of a carbon nanotube according to the present invention.

7 is a flowchart illustrating a method of manufacturing a touch panel according to the present invention.

8 is a photograph after thermocompression bonding of a carbon nanotube structure and a flexible substrate according to the present invention.

9 is a view showing a thermocompression bonding process according to the present invention.

10 is a cross-sectional view of a display system using a touch panel according to the present invention.

FIG. 11 is a cross-sectional view of a touch control device using the display system of FIG.

12 is a perspective view of a portable notebook using a touch panel according to the present invention.

13 is a perspective view of a desktop computer using a touch panel according to the present invention.

14 is a perspective view of a personal digital assistant using a touch panel according to the present invention.

15 is a perspective view of a mobile phone using a touch panel according to the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

10 --- Touch panel 12 --- First electrode plate

120 --- First substrate 122 --- First conductive layer

124 --- First electrode 126 --- Transparent protective film

14 --- Second electrode plate 140 --- Second substrate

142 --- Second conductive layer 144 --- Second electrode

16 --- dot spacer 18 --- insulating layer

80 --- Thermocompression Unit 82 --- Flexible Substrates

84 --- Compression means 100 --- Indication system

20 --- indicator 22 --- shield layer

24 --- Protective layer 26 --- Isolation

30 --- Touch panel control means 40 --- CPU

50 --- indicator control means 60 --- contact members

70 --- Compression Area 110 --- Touch Control

28 --- Transparent Board 200 --- Notebook

260 --- input port 270 --- output port

280 --- Display 281 --- Display panel

282 --- screen keyboard 290 --- main unit

292 --- Disc Drives 294 --- Loudspeakers

300 --- Desktop Computer 302 --- Console

304 --- Display 306 --- Display Panel

308 --- Data Line 400 --- Personal Handheld Information Terminal

402 --- Main Unit 404 --- Display

500 --- Cell Phone 502 --- Main Unit

504 --- indicator 590 --- housing

592 --- Antenna 594 --- Transmitter

596 --- Earpiece

Claims (15)

A touch panel comprising a first electrode plate and a second electrode plate provided at regular intervals from the first electrode plate. The first electrode plate may include a first substrate, a first conductive layer provided on the surface of the first substrate, and two first electrodes provided to be electrically connected to both ends of the first conductive layer in the first direction. Equipped; The second electrode plate may include a second substrate, a second conductive layer provided on the surface of the second substrate, and two second electrodes provided to be electrically connected to both ends of the second conductive layer in the second direction. The second conductive layer is provided to face the first conductive layer of the first electrode plate, and the second direction is perpendicular to the first direction; At least one conductive layer of the first conductive layer and the second conductive layer has a carbon nanotube structure, The carbon nanotube structure contains a plurality of carbon nanotubes uniformly distributed and orderly arranged, The plurality of carbon nanotubes are arranged in a preferred direction along the same direction, The first electrode and the second electrode is a touch panel, characterized in that formed by the carbon nanotube structure. delete delete The method of claim 1, wherein the carbon nanotube structure contains at least one carbon nanotube film, The carbon nanotube membrane is obtained by drawing directly from the carbon nanotube array, The carbon nanotubes in the carbon nanotube film are continuously connected to each other at the ends, and are arranged in a priority direction, and the carbon nanotubes adjacent to each other are closely connected by van der Waals' forces. . The method of claim 4, wherein the carbon nanotube structure contains at least two layers of superimposed carbon nanotube films, Touch panel, characterized in that the arrangement direction of the carbon nanotubes in the carbon nanotube film of the two layers form a constant angle (β), the range is 0 degrees ≤ β ≤ 90 degrees. The touch panel as set forth in claim 4, wherein the carbon nanotube film has a thickness of 0.5 nm to 100 μm. The method of claim 1, wherein the carbon nanotubes in the first conductive layer are arranged along a first direction; The carbon nanotubes in the second conductive layer are arranged along the second direction. delete The polyvinyl chloride and acrylic resin according to claim 1, wherein the materials of the first substrate and the second substrate are polycarbonate, polymethyl methacrylate, polyethylene terephthalate, polyethersulfone, cellulose ester, benzocyclobutene. Touch panel, characterized in that can be used in combination of some or several of them. The touch panel as set forth in claim 1, wherein the touch panel further includes an insulating layer, and the insulating layer is provided at an outer edge portion between the first electrode plate and the second electrode plate. In the manufacturing method of the touch panel, Providing a first substrate and a second substrate; A first conductive layer and a second conductive layer each having a carbon nanotube structure are formed on the surfaces of the first and second substrates, respectively. The electrodes are electrically connected to each other, and two second electrodes are electrically connected to both ends of the second conductive layer in the second direction, respectively, to form a first electrode plate and a second electrode plate. A process perpendicular to the first direction; And a step of installing the first electrode plate and the second electrode plate such that the first conductive layer and the second conductive layer face each other. The carbon nanotube structure contains a plurality of carbon nanotubes uniformly distributed and orderly arranged, The plurality of carbon nanotubes are arranged in a preferred direction along the same direction, The first electrode and the second electrode is a manufacturing method of the touch panel, characterized in that formed by the carbon nanotube structure. The method of claim 11, further comprising: forming carbon nanotube structures on the surfaces of the first and second substrates, and then thermocompressing the first and second substrates on which the carbon nanotube structures are formed. Method of manufacturing a touch panel comprising a. An electronic device comprising a display device and a touch panel provided to face the display device. The touch panel includes a first electrode plate and a second electrode plate mounted at regular intervals from the first electrode plate, The first electrode plate may include a first substrate, a first conductive layer provided on the surface of the first substrate, and two first electrodes provided to be electrically connected to both ends of the first conductive layer in the first direction. Equipped, The second electrode plate may include a second substrate, a second conductive layer provided on the surface of the second substrate, and two second electrodes provided to be electrically connected to both ends of the second conductive layer in the second direction. The second conductive layer is provided to face the first conductive layer of the first electrode plate, and the second direction is perpendicular to the first direction; At least one conductive layer of the first conductive layer and the second conductive layer has a carbon nanotube structure, The carbon nanotube structure contains a plurality of carbon nanotubes uniformly distributed and orderly arranged, The plurality of carbon nanotubes are arranged in a preferred direction along the same direction, And the first electrode and the second electrode are formed by the carbon nanotube structure. The electronic device of claim 13, wherein the touch panel and the display device are integrally installed or spaced apart from each other. The electronic device of claim 13, wherein the display device is one of a touch control device, a notebook computer, a desktop computer, a personal digital assistant, and a mobile phone.

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