TWI362776B - Touch panel and displaying device using the same - Google Patents

Description

1362776 December 26, 2014 "55^3 Invention: [Technical Field] [0001] The present invention relates to a touch screen and a display device using the same, and more particularly to a carbon nanotube-based touch screen and use thereof Display device β of the touch panel [Prior Art] [0002] In recent years, with the development of high performance and diversification of various electronic devices such as mobile phones and touch navigation systems, light transmissive is mounted on the front surface of display elements such as liquid crystals. The electronic devices of the touch screen are gradually increasing. The user of the electric device can perform the operation by visually checking the display content of the display element located on the back surface of the touch panel, and pressing the touch panel by a finger or a pen to perform the operation. Thus, various functions of the electronic device can be operated. . [0003] According to the working principle of the touch screen and the transmission medium, the prior touch screens are generally divided into four types, namely, resistive, capacitive sensing, infrared, and surface acoustic wave. Among them, the resistive touch screen is the most widely used, please refer to the literature “Production of Transparent repair”.

Conductive Films with Inserted SiO 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). The prior resistive touch screen generally comprises an upper substrate, the upper surface of which is formed with an upper transparent conductive layer; the lower substrate, the upper surface of which is formed with a transparent conductive layer; and a plurality of dot spacers (D〇 t 096149382 Form No. A0101 Page 4 of 24 1003481762-0 [0004] 1362776 December 26, 100 Press the replacement page

Spacer) is disposed between the upper transparent conductive layer and the lower transparent conductive layer. The upper transparent conductive layer and the lower transparent conductive layer are usually made of an indium tin oxide (ITO) layer (hereinafter referred to as ΙΤ0 layer) having a conductive property. When the upper substrate is pressed with a finger or a pen, the upper substrate is twisted such that the upper transparent conductive layer and the lower transparent conductive layer at the pressing portion are in contact with each other. The voltage is sequentially applied to the upper transparent conductive layer and the lower transparent conductive layer through the external electronic circuit, and the touch screen controller measures the voltage change on the first conductive layer and the voltage change on the second conductive layer, respectively, and performs accurate calculation. Convert to contact coordinates. The touch screen controller passes the digitized contact coordinates to the central processor. The central processor issues corresponding commands according to the coordinates of the touch points, initiates various function switching of the electronic device, and controls display of the display elements by the display controller. [0005] However, an IT0 layer is generally prepared by ion beam sputtering or evaporation as a transparent conductive layer. In the preparation process, a high vacuum environment is required and heating is required to 200 to 300 ° C, thus making the IT0 layer The preparation cost is higher. In addition, the IT0 layer as a transparent conductive layer has disadvantages such as insufficient mechanical properties, difficulty in bending, and uneven distribution of resistance values. In addition, the transparency of IT0 will gradually decrease in humid air. As a result, the prior resistive touch screens and display devices have disadvantages such as insufficient durability, low sensitivity, linearity, and poor accuracy. [0006] In view of this, it is indeed necessary to provide a touch screen and a display device which are durable, high in sensitivity, linear and accurate. SUMMARY OF THE INVENTION [0007] A touch screen includes: a first electrode plate, the first electrode plate includes a first substrate and a first conductive layer disposed on the lower surface of the first substrate 096149382 Form No. A0101 No. 5 Page / Total 24 pages 1003481762-0 1362776

At least one of the conductive layers includes at least two overlapping carbon nanotube layers, each of the carbon nanotube layers including a plurality of aligned carbon nanotubes, and two adjacent carbon nanotubes The carbon nanotubes in the layer are arranged in the same direction

a second surface of the first substrate, the second electrode, and including a second substrate and an upper surface of the second substrate; and a display device, an electrode plate and a second electrode plate, the first and first conductive The layer is disposed at a distance between the first base plate and the first electrode plate, and the two conductive layers are disposed on the second substrate, wherein the display is set to a red pair and the second f plate of the line is disposed; wherein At least one of the conductive layer and the second conductive layer comprises at least two overlapping carbon nanotube layers, each of the carbon nanotube layers comprising a plurality of aligned carbon nanotubes, and two adjacent ones The carbon nanotubes in the carbon nanotube layer are arranged in the same direction. At the time of the round-robin technology, the 提供 provided with at least two overlapping carbon nanotube layers as the dielectric layer _ touch screen and display (4) have the following advantages: First, due to the excellent mechanical properties of the carbon nanotubes The single nano-tube layer composed of the aligned carbon nanotubes has better _ properties and mechanical strength, so the use of the at least (four) carbon nanotube layer as a transparent conductive layer can correspondingly improve the durability of the touch screen. , thereby improving the durability of using the touch screen display device; secondly, because of the excellent electrical conductivity of the carbon nanotube, the nano-carbon tube consisting of aligned carbon nanotubes 096149382 Form No. A0101 Page 6 of 24 1003481762-0 1362776 On December 26, 100, the shuttle is replacing the w m carbon tube layer with a uniform resistance distribution. Therefore, by using at least two layers of carbon nanotubes as the transparent conductive layer, the touch screen and the display device can be correspondingly improved. Resolution and accuracy. [Embodiment] [0010] A touch screen and a display device provided by the present technical solution will be described in detail below with reference to the accompanying drawings. Referring to FIG. 1 and FIG. 2 , the embodiment of the present disclosure provides a touch screen 10 , which includes a first electrode plate 12 , a second electrode plate 14 , and a first electrode plate 12 and a second electrode . A plurality of transparent dot spacers 16 between the plates 14. [0012] The first electrode plate 12 includes a first substrate 12t), a first conductive layer 122 and two first electrodes 124. The first substrate 120 is a planar structure, and the first conductive layer 122 and the two first electrodes 124 are disposed on the lower surface of the first substrate 120. The two first electrodes 124 are respectively disposed at both ends of the first conductive layer 122 in the 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 second substrate 140 is a planar structure, and the second conductive layer 142 and the two second electrodes 144 are disposed on the upper surface of the second substrate 140. The two second electrodes 144 are respectively disposed 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 is perpendicular to the second direction, i.e., the two first electrodes 124 are orthogonal to the two second electrodes 144. The first substrate 120 is a transparent film and a film having a certain degree of softness. The second substrate 140 is a transparent substrate, and the material of the second substrate 140 can be selected from hard materials such as glass, quartz, diamond, and plastic. Flexible material. The second base 140 is mainly supported by 096149382 Form No. A0101 Page 7 of 24 1003481762-0 1362776 100 years. December 26' is replacing the page. The material of the first electrode 124 and the second electrode 144 is metal, a nanotube film or other conductive material as long as conductivity is ensured. In this embodiment, the first substrate 120 is made of a polyester film, and the second substrate 140 is a glass substrate. The first electrode 124 and the second electrode 144 are conductive silver paste layers. [0013] Further, an insulating layer 18 is disposed on the periphery of the upper surface of the second electrode plate 14. The first electrode plate 12 is disposed on the insulating layer 18, and the first conductive layer 122 of the first electrode plate 12 is disposed opposite to the second conductive layer 142 of the second electrode plate 14. The plurality of transparent dot spacers 16 are disposed on the second conductive layer 142 of the second electrode plate 14, and the plurality of transparent dot spacers 16 are spaced apart from each other. The distance between the first electrode plate 12 and the second electrode plate 14 is 2 to 1 μm. Both the insulating layer 18 and the transparent dot spacer 16 may be made of an insulating transparent resin or other insulating transparent material. The insulating layer i8 and the dot spacers 16 are provided to electrically insulate the first electrode plate 14 from the second electrode plate 12. It can be understood that when the touch screen 10 is small in size, the dot spacer 16 is an optional structure, and it is only necessary to ensure that the first electrode plate 14 is electrically insulated from the second electrode plate 12.

[0014] In addition, the upper surface of the first electrode plate 12 may further be provided with a transparent protective film 126, which may be made of tantalum nitride, hafnium oxide, phenylcyclobutene (BCB), polyester, acrylic resin, etc. Material formation. The transparent protective film 126 may also be provided with a surface hardened, smooth scratch-resistant plastic layer, such as a polyethylene terephthalate (PET) film, for protecting the first electrode plate 12 for improved durability. The transparent protective film 126 can also be used to provide some other additional functionality' such as to reduce glare or reduce reflection. 096149382 at least one of the first conductive layer 122 and the second conductive layer 142 Form No. A0101 Page 8 / Total 24 1 Page 8 / Total 24 Page 1003481762-0 [0015] 1362776

[0017] [0017] fI leap year. December sunday includes at least two overlapping carbon nanotube layers, each of which comprises a plurality of aligned carbon nanotubes, and _ Two carbon nanotube layers are arranged in the same direction. The carbon nanotube layer is a carbon nanotube film or a plurality of carbon nanotube films which are laid in parallel and without gaps, and the (four) orbital devalids of adjacent nanotube layers are densely combined. The carbon tube thinning step comprises a plurality of carbon nanotube bundle segments, each of the carbon tube bundle segments having substantially equal lengths and each of the carbon nanotube bundle segments being composed of a plurality of mutually parallel carbon nanotube bundles The two ends of the plurality of carbon nanotube bundle segments are connected to each other by a van der Waals force. Since the carbon nanotube layer can be laid in parallel and without gaps by a plurality of carbon nanotubes (four), the length and width of the carbon nanotube layer are not limited and can be prepared according to actual needs. The number of layers of the carbon nanotube layer in the first conductive layer 122 and the second conductive layer is not limited. The thickness of the carbon nanotube film is m (10) micro-h. In the embodiment of the present invention, the first conductive layer 122 and the second conductive layer 142 are both carbon nanotube layers. The carbon nanotube layer comprises a two-layer carbon nanotube film which is arranged in an overlapping manner. The carbon nanotube layer has a length of 30 cm, the carbon nanotube layer has a width of 30 cm, and the carbon nanotube layer has a thickness of 1 μm. Preferably, the carbon nanotubes in the first conductive layer 122 are aligned along the first direction, and the carbon nanotubes in the second conductive layer 142 are aligned along the second direction. The method for preparing the carbon nanotube film in the first conductive layer 122 and/or the second conductive layer 丨42 of the present embodiment mainly comprises the following steps: Step 1. ic is provided for an array of carbon nanotubes, preferably, the array is Ultra-sequential carbon nanotube array. [0018] 096149382 The carbon nanotube array provided by the embodiment of the present technical solution is a single-walled carbon nanotube array, a double-walled carbon nanotube array, or a multi-walled carbon nanotube array. The implementation form No. A0101, page 9 / page 24, 1003481762-0 1362776, December 26, 2006, according to the example of the replacement page, the preparation method of the super-sequential carbon nanotube array is chemical vapor deposition, The specific steps include: (a) providing a flat substrate, the substrate may be selected from a P-type or N-type germanium substrate, or a germanium substrate formed with an oxide layer, preferably using a 4-inch germanium substrate; (b) A catalyst layer is uniformly formed on the surface of the substrate, and the catalyst layer material may be one selected from the group consisting of iron (Fe), indium (Co), town (Ni) or any combination thereof; (c) the substrate on which the catalyst layer is formed is 700 Annealing in air at ~900 ° C for about 30 minutes to 90 minutes; (d) placing the treated substrate in a reaction furnace, heating to 500-740 ° C under a protective gas atmosphere, and then passing a carbon source gas to react After 5 to 30 minutes, a super-sequential carbon nanotube array is grown to a height of 200 to 40 μm. The super-sequential carbon nanotube array is a plurality of pure carbon nanotube arrays formed of carbon nanotubes that are parallel to each other and perpendicular to the substrate. The super-sequential carbon nanotube array is substantially free of impurities such as amorphous carbon or residual catalyst metal particles by the above controlled growth conditions. The carbon nanotubes in the array of carbon nanotubes are in close contact with each other to form an array by van der Waals forces. The carbon nanotube array is substantially the same area as the above substrate. [0019] In this embodiment, the carbon source gas may be selected from acetylene, ethylene, methane and other chemically active hydrocarbons. The preferred carbon source gas in this embodiment is acetylene; the shielding gas is nitrogen or an inert gas, which is preferred in this embodiment. The shielding gas is argon. [0020] It can be understood that the carbon nanotube array provided by the embodiment is not limited to the above preparation method. It can also be a graphite electrode constant current arc discharge deposition method, a laser evaporation deposition method, or the like. 096149382 Step 2: Use a stretching tool to pull from the carbon nanotube array to get a form number A0101 Page 10 / Total 24 pages 1003481762-0 [0021] 1362776 100 years. December 26 shuttle is replacing the page Carbon tube film. Specifically, the method comprises the following steps: (a) selecting a plurality of carbon nanotube segments of a certain width from the carbon nanotube array; in this embodiment, it is preferred to contact the carbon nanotube array with a tape having a certain width to select a certain width. a plurality of carbon nanotube segments; (b) stretching the plurality of carbon nanotube segments at a rate substantially perpendicular to the growth direction of the carbon nanotube array to form a continuous carbon nanotube film. [0022] In the above stretching process, the plurality of carbon nanotube segments are gradually separated from the substrate in the stretching direction under the action of the tensile force, and the selected plurality of carbon nanotube segments are selected due to the effect of the van der Waals force. They are continuously pulled out end to end with other carbon nanotube segments to form a carbon nanotube film. The carbon nanotube film comprises a plurality of carbon nanotube bundles connected end to end and oriented. The arrangement direction of the carbon nanotubes in the carbon nanotube film is parallel to the stretching direction of the carbon nanotube film. [0023] Referring to FIG. 3, the carbon nanotube film is a carbon nanotube film having a certain width formed by connecting a plurality of carbon nanotube bundles arranged in a preferential orientation. The arrangement of the carbon nanotubes in the carbon nanotube film is substantially parallel to the stretching direction of the carbon nanotube film. The preferred orientation of the carbon nanotube film obtained by direct stretching has better uniformity than the disordered carbon nanotube film, i.e., has a more uniform thickness and a more uniform electrical conductivity. At the same time, the method of directly stretching the carbon nanotube film is simple and rapid, and is suitable for industrial application. [0024] In this embodiment, the width of the carbon nanotube film is related to the size of the substrate on which the carbon nanotube array is grown. The length of the carbon nanotube film is not limited and can be obtained according to actual needs. The thickness of the carbon nanotube film is from 0.5 nm to 100 μm. When the carbon nanotube in the carbon nanotube film is single-walled nanometer 096149382 Form No. A0101 Page 11 of 24 1003481762-0 1362776 Carbon tube, the diameter of the shirt β suction s is 〇·5 nm ~ 50 nm. When the nep tube of the nep tube is in the tube (N) tube, the double-walled carbon tube is pinched as U nanometer, nanometer. When the carbon nanotube is thin and the carbon nanotube is a multi-walled carbon nanotube, the straight I of the multi-walled carbon nanotube is 1.5 to 50 nm. [0025] It can be understood that 'because the nano carbon tube of the real _ super lion carbon carbon tube is very pure' and because the specific surface area of the carbon nanotube itself is very large, the nai pure film itself has the secret of (four) In this case, the carbon nanotube film can be directly adhered to the first substrate 12 or the second substrate 14 as the first conductive layer 122 and the second conductive layer 142.

In addition, the carbon nanotube film attached to the first substrate 12 or the second substrate 140 may be treated with an organic solvent. Specifically, an organic solvent can be dropped on the surface of the carbon nanotube film by a test tube to infiltrate the entire carbon nanotube film. The organic solvent is a volatile organic solvent such as ethanol, methanol, acetone, ethylene bromide or chloroform, and ethanol is used in this embodiment. After the carbon nanotube film is infiltrated by an organic solvent, the carbon nanotube film can be firmly attached to the surface of the substrate under the action of the surface tension of the volatile organic solvent, and the surface volume ratio is reduced and the viscosity is lowered. Has good mechanical strength and flexibility. 096149382 [0027] Furthermore, in order to reduce the electromagnetic interference generated by the display device and avoid the error of the signal emitted from the touch screen 10, a shielding layer may also be disposed on the lower surface of the second substrate 140 (not shown) The shielding layer may be formed of a conductive material such as a tin oxide (ITO) film, a tantalum oxide (yttrium) thin film, a gold film, a silver film film, or a carbon nanotube film. In this embodiment, the shielding layer comprises a carbon nanotube film, the nanometer page 12 / total 24 page form number Α 0101 1003481762-0 1362776 100 years. December 26 correction replacement page carbon tube film The arrangement of the carbon nanotubes is not limited, and may be oriented or arranged in other ways. In this embodiment, the carbon nanotubes in the shielding layer are aligned. The carbon nanotube film acts as an electrical grounding point and acts as a shield, so that the touch screen 10 can work in an interference-free environment. [0028] Referring to FIG. 4, the embodiment of the present invention further provides a touch screen 10 using the above. The display device 100 includes the above touch screen 10 and a display device 20. The display device 20 is disposed adjacent to and adjacent to the second electrode plate 14 of the touch screen 10 described above. The touch screen 10 can be disposed at a predetermined distance from the display device 20, or can be integrated on the display device 20. When the touch screen 10 is integrated with the display device 20, the touch screen 10 can be attached to the display device 20 via an adhesive. [0029] The display device 20 of the present invention may be a display device such as a liquid crystal display, a field emission display, a plasma display, an electroluminescence display, a vacuum fluorescent display, and a cathode ray tube. [0030] Further, when a shielding layer 22 is disposed on the lower surface of the second substrate 140 of the touch screen 10, a passivation layer 24 may be disposed on the surface of the shielding layer 22 away from the second substrate 140. The passivation layer 24 is provided. It can be formed of a material such as tantalum nitride or tantalum oxide. The passivation layer 24 is spaced apart from the front side of the display device 20 by a gap 26. The passivation layer 24 acts as a dielectric layer and protects the display device 20 from damage due to excessive external force. In addition, the display device 100 further includes a touch screen controller 30, a central processing unit 40, and a display device controller 50. Wherein, the touch screen controller 30, the central processing unit 40 and the display device controller 50 three 096149382 form number A0101 page 13 / total 24 pages 1003481762-0 1362776 100 years December 26 · miserable replacement page through the circuit Interconnected, the touch screen controller 30 is electrically coupled to the touch screen 20, and the display device controller 50 is electrically coupled to the display device 20. The touch screen controller 30 positions the selection information input by an icon or menu position touched by a touch object 60 such as a finger, and transmits the information to the central processor 40. The central processor 40 controls the display of the display element 20 by the display controller 50. [0032] In use, a voltage of 5 V is applied between the first electrode plates 12 and the second electrode plates 14, respectively. The user visually confirms the display of the display element 20 disposed under the touch screen 10 while pressing the first electrode plate 12 of the touch panel 10 by the touch object 60 such as a finger or a pen. The first substrate 12G in the first electrode plate 12 is bent such that the first conductive layer 122 of the pressing portion 70 is in contact with the second conductive layer 142 of the second electrode plate 14 to form conduction. The touch screen controller 30 converts the voltage change in the first direction of the first conductive layer 122 with the voltage change in the second direction of the second conductive layer 142, respectively, and performs accurate calculation to convert it into contact coordinates. The touch screen controller 30 communicates the digitized contact coordinates to the central processor 40. The central processor 40 issues corresponding commands in response to the contact coordinates, initiates various functional switching of the electronic device, and controls display of the display component 20 by the display controller 50. [0033] The touch screen and the display device using the at least two overlapping carbon nanotube layers as the transparent conductive layer provided by the embodiments of the present technical solution have the following advantages: First, since the carbon nanotube has excellent mechanical properties, The single carbon nanotube layer composed of the aligned carbon nanotubes has good toughness and mechanical strength, so the use of the at least two carbon nanotube layers as a transparent conductive layer can correspondingly improve the durability of the touch screen. Further improving the durability of the display device using the touch screen; second, due to the carbon nanotubes 096149382 Form No. 1010101 Page 14/24 pages 1003481762-0 1362776 100 years. December 26th revision _ page has excellent Conductive performance, the carbon nanotube layer composed of aligned carbon nanotubes has a uniform resistance distribution, and thus, using at least two layers of carbon nanotubes as the transparent conductive layer can correspondingly improve the touch screen and display The resolution and fineness of the device. [0034] In summary, the present invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. 1 Equivalent modifications or variations made by those skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS [0035] FIG. 1 is a schematic perspective view of a touch screen of an embodiment of the present technical solution. 2 is a schematic side view showing the structure of a touch screen according to an embodiment of the present technical solution. 3 is a scanning electron microscope photograph of a carbon nanotube film in a touch screen according to an embodiment of the present technology. [0038] FIG. 4 is a schematic side view showing a display device of an embodiment of the present technical solution. ® [Main component symbol description] [0039] Touch screen: 10 [0040] First electrode plate: 12 [0041] Second electrode plate: 14 [0042] Dot spacer: 16 [0043] Insulation: 18 [0044] First substrate: 120 Form No. A0101 096149382 Page 15 / Total 24 pages 1003481762-0 1362776 [0045] First conductive layer: 122 [0046] First electrode: 124 [0047] Second substrate: 140 [0048] Second Conductive layer: 142 [0049] Second electrode: 144 [0050] Transparent protective film: 126 [0051] Display device: 100 [0052] Display device: 20 [0053] Touch screen controller: 30 [0054] Central processing unit: 40 [0055] Display device controller: 50 [0056] Touch object: 60 [0057] Pressing place: 70 [0058] Shielding layer: 22 [0059] Passivation layer: 24 [0060] Gap: 26 096149382 Form number Α 0101 No. 16 Page / Total 24 pages, December 26, 2006, press the replacement page

1003481762-0

Claims (1)

100 years. December 26, according to the replacement page 13.62.776 VII, the scope of application patent: 1. A touch screen, comprising: a first electrode plate, the first electrode plate comprising a first substrate and a first conductive layer a second electrode plate spaced apart from the first electrode plate, the second electrode plate including a second substrate and a second conductive layer disposed on the second surface An upper surface of the substrate; the first conductive layer and the second conductive layer are used for sensing a touch; and the improvement is that at least one of the first conductive layer and the second conductive layer comprises at least two overlapping nano layers The carbon tube layer, each carbon nanotube layer comprises a plurality of aligned carbon nanotubes, and the carbon nanotubes in the adjacent two carbon nanotube layers are arranged in the same direction. 2. The touch screen of claim 1, wherein the carbon nanotube layer is a carbon nanotube film or a plurality of carbon nanotube films laid in parallel and without gaps. 3. The touch screen of claim 1, wherein the adjacent two carbon nanotube layers are tightly coupled by a van der Waals force. 4. The touch screen of claim 2, wherein the carbon nanotube film further comprises a plurality of carbon nanotube bundle segments, each of the carbon nanotube bundle segments having substantially equal lengths and each nanocarbon The tube bundle segment is composed of a plurality of mutually parallel carbon nanotube bundles, and the two ends of the plurality of carbon nanotube bundle segments are connected to each other by a van der Waals force. 5. The touch panel of claim 1, wherein the carbon nanotube film has a thickness of from 0.5 nm to 100 μm. 6 The touch screen according to claim 1, wherein the carbon nanotube 096149382 form number A0101 page 17 / 24 page 1003481762-0 1100 December 2β·day correction replaces the nano carbon in the page layer The tube is a single-walled carbon nanotube, a double-walled carbon nanotube or a multi-walled carbon nanotube. The touch screen of claim 6, wherein the single-walled nano carbon s has a diameter of 0.5 nm to 5 nanometers, and the double-walled carbon nanotube has a diameter of 1.0 nm. 50 Nailai, the diameter of the multi-walled carbon nanotube is 丨5 nanometer. The touch screen of claim 1, wherein the first electrode plate further comprises two first electrodes disposed at two ends of the first conductive layer in a first direction and electrically connected to the first conductive layer The carbon nanotubes in the first conductive layer are aligned in the first direction. 9. The touch screen of claim 8, wherein the second electrode plate further comprises two second electrodes disposed at two ends of the second conductive layer in a second direction and electrically connected to the second conductive layer. The carbon nanotubes in the second conductive layer are aligned in the second direction. The touch screen of claim 9, wherein the second direction is perpendicular to the first direction. 11. The touch screen of claim 1, wherein the touch screen advance comprises an insulating layer disposed on a periphery of the second electrode plate surface, the first electrode plate being disposed on the insulating layer. The touch screen of claim 11, wherein the touch screen further comprises a plurality of dot spacers disposed between the first electrode plate and the second electrode plate. The touch panel of claim 12, wherein the plurality of dot spacers are disposed between the first conductive layer and the second conductive layer. The touch panel of claim 12, wherein the dot spacer and the insulating layer material are insulating and transparent resins. 1003481762-0 Form No. Α0101 Page 18 of 24 [ΐοο December Ζβ日修正^^. The touch screen of the first aspect of the invention, wherein the touch screen further comprises a shielding layer disposed on a lower surface of the second substrate of the touch screen, the shielding layer being an indium tin oxide film Film, nickel gold film, silver film or carbon nanotube film. The touch screen of claim 1, wherein the first base material is a polyester film, and the second ground state material is glass, quartz, diamond or plastic. The touch screen of claim 1, wherein the touch screen further comprises a transparent protective film disposed on the surface of the first electrode, the transparent protective film is made of tantalum nitride, Cerium oxide, styrene oxide, polyester, acrylic or polyethylene terephthalate. A display device comprising: a touch screen comprising a first electrode plate and a second electrode plate, the first electrode plate comprising a first substrate and a first conductive layer disposed on a lower surface of the first substrate The second electrode plate is spaced apart from the first electrode plate, and includes a second substrate and a second conductive layer disposed on an upper surface of the second substrate; and a display device facing the touch screen The second electrode plate is disposed; the first conductive layer and the second conductive layer are used for sensing a touch; and the improvement is that at least one of the first conductive layer and the second conductive layer comprises at least two overlapping layers In the carbon nanotube layer, each carbon nanotube layer comprises a plurality of aligned carbon nanotubes, and the carbon nanotubes in the adjacent two carbon nanotube layers are arranged in the same direction. The display device of claim 18, wherein the display device further comprises a touch screen controller form number Α0101, page 19/24 pages, a central processing unit, and a display 1003481762-0 1362776, _ : _ December 26, 100, the nuclear replacement page device controller, wherein the touch screen controller, the central processing unit and the display device controller are mutually connected by a circuit, and the touch screen controller is electrically connected to the touch screen The display device controller is electrically connected to the display device. The display device of claim 18, wherein the display device is one of a liquid crystal display, a field emission display, a plasma display, an electroluminescence display, a vacuum fluorescent display, and a cathode ray tube display. The display device of claim 18, wherein the touch screen g is spaced apart from the display device or the touch screen is integrated on the display device. The display device of claim 18, wherein the display device further comprises a shielding layer disposed on a lower surface of the second substrate of the touch screen, the shielding layer being an indium tin oxide film , tin antimony oxide film, nickel gold film, silver film or carbon nanotube film. The display device of claim 22, wherein the display device further comprises a passivation layer disposed on a surface of the shielding layer away from the second substrate of the touch screen, the material of the passivation layer It is tantalum nitride or g yttrium oxide. 096149382 Form number Α0101 Page 20 of 24 1003481762-0