TWI380079B - Method for making liquid crystal display with touch panel - Google Patents

Description

1380079 101.05.09 09 nuclear dinner page change

[Technical Field] The present invention relates to a method of fabricating a touch liquid crystal display, and more particularly to a method for preparing a touch liquid crystal display based on a carbon nanotube. [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, electronic devices having a light-transmitting touch panel mounted on the front surface of display elements such as liquid crystal display screens Gradually increase.

[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. Resistive touch screens are the most widely used, see the literature "Production of Transparent Conductive Films with Inserted Si02 Anchor".

Layer, and Application to a Resistive Touch Panel" Kazuhiro Node, Kohtaro Taniraura. Electronics and Communications in Japan, Part 2, Vol. 84, P39-45 (2001). [0004] Previous resistive touch screens generally include an upper substrate. 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 a plurality of dot spacers are disposed on the upper transparent conductive layer and the lower transparent conductive layer Between the layers, the upper transparent conductive layer and the lower transparent conductive layer generally adopt an indium tin oxide (IT0) layer (hereinafter referred to as an IT0 layer) having a conductive property. When the upper substrate is pressed with a finger or a pen When the upper substrate is distorted, the upper transparent conductive layer and the lower transparent conductive layer at the pressing place are contacted by the replacement page of the modified transparent replacement layer. 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 separately measures the voltage on the first conductive layer. Varying changes with the voltage across the second conductive layer and performing an accurate calculation to convert it into contact coordinates. The touch screen controller passes the digitized contact coordinates to the central processor. The central processor issues the appropriate command based on the contact coordinates. The various functions of the electronic device are switched, and the display component display is controlled by the display controller. [0005] However, the ITO layer is usually prepared by ion beam sputtering or evaporation as a transparent conductive layer, and the preparation process needs to be compared. The high vacuum environment and the need to heat to 200~300 °C, so that the preparation cost of the ΙΤ0 layer is higher. In addition, the ΙΤ0 layer as a transparent conductive layer has the disadvantages of insufficient mechanical properties, difficulty in bending, and uneven distribution of resistance values. In addition, the transparency of IT0 will gradually decrease in humid air, which leads to the disadvantages of the previous resistive touch screen and display device which are not durable enough, low sensitivity, linearity and poor accuracy. Thus, the touch screen using the touch screen can be seen. The liquid crystal display has a complicated preparation process, high cost, poor durability, low sensitivity, and linearity. Insufficient accuracy, etc. [0006] In view of this, a method for preparing a touch liquid crystal display with simple process, low cost, and prepared touch liquid crystal display with good cornering resistance, high sensitivity, linearity and accuracy is provided. [0007] A method for fabricating a touch-type liquid crystal display, comprising the steps of: preparing a touch screen, the touch screen comprising a carbon nanotube layer; forming a polarizing layer on the touch screen Forming a first alignment layer on the surface of the polarizing layer to form an upper substrate; preparing a thin film transistor _63#单号 A0101 Page 4 of 36 pages 1013175436-0 1380079 101.05月09 The first pressing layer is formed on the surface of the thin film transistor to form a thin film transistor; a polarizer is disposed on the surface of the thin film transistor panel away from the second alignment layer to form a lower substrate; a liquid crystal layer forms a sandwich structure between the first alignment layer of the upper substrate and the second alignment layer of the lower substrate, thereby obtaining a touch liquid crystal display . [0008] Compared with the preparation method of the prior art touch liquid crystal display, the preparation method of the touch liquid crystal display provided by the technical solution has the following advantages: First, since the carbon nanotube layer has excellent mechanical properties It is also resistant to bending, so the use of the above carbon nanotube layer as a transparent conductive layer can make the transparent conductive layer have good toughness and mechanical strength. Further, in cooperation with the flexible substrate, a flexible touch liquid crystal display can be prepared, which is suitable for use on a flexible display device. Secondly, since the carbon nanotube film provided in the embodiment is obtained by pulling a drawing tool, the method does not require a vacuum environment and a heating process, so the carbon nanotube film prepared by the above method is used as a transparent conductive. The layer and the prepared touch liquid crystal display have the advantages of low cost, environmental protection and energy saving. Third, since the carbon nanotubes in the polarizing layer are arranged in the same direction and have a polarizing effect, the structure of the touch liquid crystal display can be simplified. Fourthly, since the carbon nanotube film provided by the embodiment can be bonded to the substrate by a hot pressing process, the manufacturing cost can be reduced and the manufacturing process can be simplified. [Embodiment] Hereinafter, a method of manufacturing a touch type liquid crystal display panel of the present technical solution will be described in detail with reference to the accompanying drawings. 1 and FIG. 2, the embodiment of the present invention provides a method for preparing a touch-type liquid crystal display 10, which mainly includes the following steps: 0971263#单号A〇101 Page 5/36 pages 1013175436- 0 1380079 [0011] On May 09, 101, the shuttle is replacing the page. Step 1: Preparing an upper substrate 20, specifically including the following steps: [0012] (I), a touch screen 200 is prepared. Referring to FIG. 3, a method of preparing a touch screen 200 specifically includes the following steps: [0013] (A), a first substrate 206 is provided that includes two opposing surfaces. [0014] The first substrate 206 is a transparent flexible planar structure. The thickness of the first substrate 206 is 0.01 mm to 1 cm, and the area is not limited, and may be selected according to actual conditions. The first substrate 206 is formed of a flexible material such as plastic or resin. Specifically, the material of the first substrate 206 may be polycarbonate (PC), polydecyl methacrylate (PMMA), polyethylene terephthalate (PET), polyether oxime (PES). One or more of materials such as polyammonium (PI) 'cellulose ester, benzocyclobutene (BCB), polyethylene (PVC) and acrylic resin. It is to be understood that the material forming the first substrate 206 is not limited to the materials listed above, as long as the first substrate 206 is ensured to have a certain flexibility and a good transparency. [0015] In the embodiment, the first substrate 206 is a polyethylene terephthalate (PET) film (hereinafter referred to as a PET film). The PET film has a thickness of 2 mm, a width of 20 cm and a length of 30 cm. [0016] (B), forming a first transparent conductive layer 208 on a surface of the first substrate 206, specifically comprising the following steps: [00] First, at least one carbon nanotube film is prepared. [0018] The method for preparing a carbon nanotube film includes other methods such as a direct growth method, a flocculation method, a rolling method, or a film stretching method. The direct growth method is a method for growing a carbon nanotube film on a substrate by chemical vapor deposition, the nano carbon 0971263# single number A 〇 101 page 6 / 36 pages 1013175436-0 1380079

101.05.09. The nuclear replacement film is a disordered carbon nanotube film, and the carbon nanotube film includes a plurality of disordered carbon nanotubes. The preparation of the carbon nanotube by the flocculation method comprises the steps of: adding the directly grown carbon nanotube raw material to the solvent t and performing the flocculation treatment to obtain a nano carbon tube floc structure; and the above carbon nanotube floc The structure is separated from the solvent, and the carbon nanotube floc structure is shaped to obtain a carbon nanotube film, which is a disordered carbon nanotube film, and includes a plurality of intertwined and each Isotropic carbon nanotubes. The roller compacting method for preparing a carbon nanotube film comprises the steps of: providing a carbon nanotube array formed on a substrate; and providing a pressing device to extrude the carbon nanotube array to obtain a carbon nanotube film. The carbon nanotube film is an ordered carbon nanotube film and includes a plurality of carbon nanotubes arranged in a preferred orientation along one or more directions. [0019] The method for preparing a carbon nanotube film by the film drawing method according to the embodiment of the present invention specifically includes the following steps: [0020] (a) providing a carbon nanotube array, preferably, the array is super-shun The carbon nanotube array; (b) selecting a certain width of the carbon nanotube from the carbon nanotube array, the embodiment preferably adopts a tape having a certain width to contact the carbon nanotube array to select a certain width. a portion of the carbon nanotubes; (c) stretching the portion of the carbon nanotubes at a rate substantially perpendicular to the growth direction of the carbon nanotube array to form a continuous carbon nanotube film. [0021] The method for preparing the super-sequential carbon nanotube array may be a chemical vapor deposition method, a graphite electrode constant current arc discharge deposition method or a laser evaporation deposition method. The carbon nanotube array provided by the embodiment of the present technical solution is one or more of a single-walled carbon nanotube array, a double-walled carbon nanotube array, and a multi-walled carbon nanotube array. The super-sequential carbon nanotube array is a plurality of parallel to each other and is vertical 1013175436-0 09712^31# single number A0101 page 7 / total 36 pages 1380079 101 years. 05 09 09 nuclear = positive replacement page straight to the substrate growth The array of pure carbon nanotubes formed by carbon nanotubes. The carbon nanotubes in the carbon nanotube array are in close contact with each other by van der Waals forces to form an array. The carbon nanotube array is substantially the same area as the above substrate. The carbon nanotube array has a height greater than 100 microns. In this embodiment, preferably, the height of the carbon nanotube array is from 200 μm to 900 μm.

[0022] Referring to FIG. 4, in the above stretching process, a part of the carbon nanotubes in the super-aligned carbon nanotube array under the tension is gradually separated from the substrate in the stretching direction, due to the effect of van der Waals force, The other carbon nanotubes in the super-sequential carbon nanotube array are continuously drawn end to end to form a carbon nanotube film. The carbon nanotube film comprises a plurality of carbon nanotubes connected end to end and oriented in the direction of stretching. The preferred orientation of the aligned 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 conductivity. At the same time, the direct stretching method for obtaining the carbon nanotube film is simple and rapid, and is suitable for industrial application. [0023] 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, and the length of the carbon nanotube film is not limited and can be obtained according to actual needs. 5奈奈。 The thickness of the carbon nanotube film is 0. 5奈, the thickness of the carbon nanotube film is 0. 5奈Meters ~ 100 microns. The carbon nanotubes in the carbon nanotube film are one or more of a single-walled carbon nanotube, a double-walled carbon nanotube, and a multi-walled carbon nanotube. The diameter of the single-walled carbon nanotube is 0.5 nm to 50 nm, and the diameter of the double-walled carbon nanotube is 1.0 nm to 50 nm, and the diameter of the multi-walled carbon nanotube is 1.5 nm ~ 50 nm. 0971263#单号 A〇101 Page 8 of 36 1013175436-0 1380079 [0024] Correction replacement page for 101.05.09 Next, the above-mentioned carbon nanotube film is treated by laser. [0025] Due to the presence of van der Waals force between the carbon nanotubes in the carbon nanotube film, some of the carbon nanotubes in the carbon nanotube film are easily aggregated to form a bundle of carbon nanotubes, the bundle of carbon nanotubes The larger diameter affects the conductivity of the carbon nanotube film. In order to improve the light transmittance of the carbon nanotube film, the carbon nanotube film is irradiated with a laser having a power density of more than 0.1 lxl 04 watt/m 2 to remove the poorly transmissive carbon nanotube bundle in the carbon nanotube film. The step of treating the carbon nanotube film by laser can be carried out in an oxygen-containing environment, preferably in an air atmosphere. [0026] The above treatment of the carbon nanotube film by laser can be carried out by fixing the carbon nanotube film, and then moving the laser device to irradiate the carbon nanotube film or by fixing the laser device, moving the carbon nanotube film to irradiate the laser The method of the carbon nanotube film is achieved. [0027] In the above process of laser irradiation of the carbon nanotube film, since the carbon nanotube has good absorption characteristics for laser, and the laser is a light with higher energy, it is generated by the carbon nanotube film. The heat causes the carbon nanotubes in the carbon nanotube film to heat up. In the carbon nanotube film, the carbon nanotube film _, the larger diameter of the carbon nanotube bundle absorbs more heat, so the temperature of the carbon nanotube in the carbon nanotube bundle is higher, when the carbon nanotube When the temperature is high enough (generally greater than 600 ° C), the carbon nanotube bundle is burned by laser. Relative to the carbon nanotube film before laser treatment. The light transmittance of the carbon nanotube film after laser treatment is remarkably improved, and the light transmittance is more than 70%. [0028] It can be understood that the purpose of adopting the laser treatment of the carbon nanotube film structure is to enter 09712631. Strictly numbered A_ page 9/36 pages 1013175436-0 1380079 101. 05.09, the shuttle is replacing the page one step to improve the nanometer. The transparency of the carbon tube film structure, therefore, this step is an optional step. [0029] Finally, the at least one carbon nanotube film is disposed on one surface of the first substrate 206 to form a carbon nanotube layer as the first transparent conductive layer 208. [0030] In the embodiment of the technical solution, the carbon nanotube layer is used as the first transparent conductive layer 208, and the first carbon nanotube layer includes a plurality of aligned carbon nanotubes. Further, the carbon nanotube layer may be a single carbon nanotube film or a plurality of parallel and gap-free carbon nanotube films. Since the plurality of carbon nanotube films in the carbon nanotube layer of the above φ can be laid in parallel and without gaps, the length and width of the above-mentioned carbon nanotube layer are not limited, and can be made according to actual needs. The length and width of the carbon nanotube layer. It can be understood that the carbon nanotube layer described in the present technical solution can also be a carbon nanotube layer of other structures, and is not limited to the structure described in this embodiment. In this embodiment, the carbon nanotube layer comprises a plurality of carbon nanotube films that are parallel and have no gaps. The carbon nanotube layer has a thickness of 50 micrometers to 500 micrometers. [0031] It can be understood that, in this embodiment, at least two carbon nanotube films may be overlapped to form a plurality of carbon nanotube layers, and the plurality of carbon nanotube layers are arranged according to the carbon nanotubes. The directions are laid directly at an intersection angle α, where 0° a 90°. In this embodiment, α is preferably 90 degrees. [0032] Specifically, the step of laying the at least one carbon nanotube film on the surface of the first substrate 206 is: deleting at least one carbon nanotube film 1263# by a single number. 36 pages 1013175436-0 1380079 101 years. May 09 revised for ¥ page

Laying directly on the surface of the first substrate 206 or laying a plurality of carbon nanotube films on the surface of the first substrate 206 in parallel and without gaps to form a surface covering the first substrate 206 Carbon nanotube layer. It can be understood that at least two carbon nanotube films may be overlapped and laid on the surface of the first substrate 206 to form a plurality of carbon nanotube layers; the plurality of carbon nanotube layers are arranged according to the carbon nanotubes. The directions are laid directly at an intersection angle α, which is symplectic, 0° α 90°. Since the carbon nanotube film comprises a plurality of aligned carbon nanotubes, and the plurality of carbon nanotubes are arranged along the direction of the film, the plurality of carbon nanotube layers can be based on the nanometer. The arrangement direction of the carbon tubes is set at an intersection angle α. [0033] In addition, the step of laying the at least one carbon nanotube film on the surface of the first substrate 206 may further: laying the at least one carbon nanotube film directly on the surface of a support body. Or laying a plurality of carbon nanotube films on the surface of a support in parallel and without gaps; removing the support to form a self-supporting carbon nanotube film structure; and directly forming the carbon nanotube film structure Covering the surface of the first substrate 206 forms a carbon nanotube layer. It can be understood that at least two carbon nanotube films can be overlapped and laid on the surface of the support body at an intersection angle α according to the arrangement direction of the carbon nanotubes, thereby forming a plurality of self-supporting carbon nanotube film structures. , where 0° α 90°. The above plurality of carbon nanotube film structures are coated on the surface of the first substrate 206 to form a plurality of carbon nanotube layers. Since the carbon nanotube film comprises a plurality of aligned carbon nanotubes, and the plurality of carbon nanotubes are arranged along the direction of the film, the plurality of carbon nanotube layers in the above-mentioned plurality of carbon nanotube layers can be The carbon nanotubes are arranged at an angle and angle α. 09712631#单号 Α〇101 Page 11 of 36 1013175436-0 1380079 Modified on May 09, 101 [0034] The support may be a substrate or a frame structure. Since the carbon nanotube in the super-sequential carbon nanotube array provided by the embodiment is very pure, and the specific surface area of the carbon nanotube itself is very large, the carbon nanotube film itself has strong viscosity. The carbon nanotube film can be directly adhered to the substrate or the frame by its own viscosity. The carbon nanotube film is adhered to the substrate or the frame, and the excess carbon nanotube film portion outside the substrate or frame can be used with a knife. The substrate or frame is removed to obtain a carbon nanotube film structure. In this embodiment, the size of the substrate or frame can be determined according to actual needs. [0035] Further, after the carbon nanotube film is laid on the surface of the first substrate 206 or after forming a carbon nanotube layer covering the surface of the first substrate 206, an organic solvent is used. The step of treating the carbon nanotube film or the carbon nanotube layer. The organic solvent is a volatile organic solvent, and one or more of ethanol, decyl alcohol, acetone, di-ethane, and gas may be used. The organic solvent in this embodiment is ethanol. The step of treating with an organic solvent may drop an organic solvent onto the surface of the carbon nanotube film or the carbon nanotube layer through a test tube, and infiltrate the entire carbon nanotube film or the carbon nanotube layer. The first substrate 206 on which the carbon nanotube layer is formed or the support in which the carbon nanotube film structure is formed may be entirely immersed in a container containing an organic solvent to be infiltrated. After the nanocarbon tube film, the carbon nanotube layer or the carbon nanotube film structure is infiltrated by an organic solvent, the parallel carbon nanotube fragments are formed under the surface tension of the volatile organic solvent. Partially integrated into the carbon nanotube bundle. Therefore, the carbon nanotube film, the carbon nanotube layer or the carbon nanotube film structure has a small surface volume ratio, is non-viscous, and has good mechanical strength and toughness. _631 Production Order No. A0101 Page 12 / Total 36 Page 1013175436-0 101. 05月09日梭正替#Page In addition, in this embodiment, a carbon nanotube composite material layer may also be formed in the first The surface of the substrate 206 serves as the first transparent conductive layer 208, and specifically includes the following steps: First, 'forming a layer of the nano molecular material solution before the surface of the first substrate 206 is formed on the surface of the first substrate 206 A surface of a substrate 2〇6. The method of coating a polymer material solution layer on a surface of the first substrate 2〇6 is: using a brush or other tool to take a certain amount of the polymer material solution, uniformly coating the surface of the flexible substrate or The surface of the flexible substrate is immersed in the polymer material solution to directly take a certain amount of the polymer material solution to form a polymer material solution layer. It can be understood that the manner in which the surface of the flexible substrate is coated with the polymer material solution is not limited as long as a uniform polymer material layer can be formed on the surface of the flexible substrate. The thickness of the polymer material layer is 0.1 μm to 丨 mm. The solution to the molecular material comprises a solution of a molten material formed by the polymer material at a certain temperature or a polymer material dissolved in a volatile organic solvent, which has a certain viscosity, preferably a polymer. The viscosity of the material solution is greater than 1 pa. S. The polymer material is solid at normal temperature and has a certain transparency. The volatile organic solvent is coated with ethanol, methanol, acetone, dioxane or gas. The polymer material is a transparent polymer material, which comprises polystyrene, polyethylene, polycarbonate, polymethyl methacrylate (PMMA), polycarbonate (PC), and ethylene terephthalate. (PET), stupid cyclobutene (BCB), polycyclic ring. In this embodiment, the polymer material is PMMA. 0101 Page 13 of 36 Page 1013175436-0 1380079 [0040] 101 years. May 09, the shuttle is replacing the page. Then, a carbon nanotube layer is placed on the layer of the molecular material solution to make the polymer material solution uniform. Dispersed into the carbon nanotube layer. The method of uniformly dispersing the high molecular material solution into the carbon nanotube layer includes hot pressing, cold pressing or blowing the carbon nanotube layer with a certain wind. [0041] Referring to FIG. 5, in this embodiment, the polymer material solution is uniformly dispersed into the carbon nanotube layer by a hot pressing method. The method is implemented by a hot pressing device 50, and specifically includes the following steps: [0042] (a) at least one of the above layers covered with a carbon nanotube layer and a molecular material solution layer

The first substrate 206 is placed in a hot pressing device 50 having rolls. [0043] The hot pressing device 50 includes a pressing device and a heating device (not shown). In this embodiment, the hot pressing device 50 is a hot press or a sealer, and the pressing device is two metal rolls 52. (b) heating the rolls in the hot pressing device 50. Specifically, the rolls are heated by a heating means in the hot press apparatus 50. In this embodiment, the heating temperature is 110 ° C to 120 ° C. It will be appreciated that the temperature of the heated rolls can be selected as desired. [0045] (c) passing the first substrate 206 covered with the carbon nanotube layer and the molecular material solution layer through a heated roll. In this embodiment, the first substrate 206 covered with the carbon nanotube layer and the molecular material solution layer is slowly passed through a heated metal double roll at a speed of 1 mm/min to 10 m/min. The heated roll may apply a certain pressure to the first substrate 206 covered with the carbon nanotube layer and the molecular material solution layer, and soften the nanocarbon tube layer and the molecular material solution layer, so that the nai The air between the carbon nanotube layer and the solution layer of the molecular material is squeezed out, _631 production order number A〇101 page 14/36 pages 1013175436-0 1380079 .101.05月09日楱正换页The carbon nanotube layer is uniformly dispersed in the carbon nanotube layer. Finally, a layer of carbon nanotube composite material is cured to form a first transparent conductive layer 208. The polymer material solution layer also functions as a binder for firmly bonding the carbon nanotube film to one surface of the first substrate 206. [0048] (C), two electrodes (not shown) are formed at intervals to the both ends of the hot-pressed carbon nanotube layer or the first substrate 206 to form an electrode plate as the first electrode plate 202. .

[0049] The material of the two electrodes is a metal, a carbon nanotube film, a conductive silver paste layer or other conductive material. In an embodiment of the technical solution, the two electrodes are electrically conductive silver paddle layers. The two electrodes are formed by applying a silver paste to the carbon nanotube layer or both ends of the first substrate by screen printing, pad printing or spraying. Then, it is baked in an oven for 10 to 60 minutes to cure the silver paste, and the baking temperature is 100 ° C to 120 ° C to obtain the two electrodes. The above preparation method is to ensure that the two electrodes are electrically connected to the carbon nanotube layer.

[0050] (D), providing a second substrate 210 including two opposite surfaces; forming a carbon nanotube layer on a surface of the second substrate 210 as the second transparent conductive layer 212, and spaced apart Two electrodes (not shown) are formed at both ends of the carbon nanotube layer or both ends of the second substrate 210 to form a second electrode plate 204. [0051] The second substrate 210 is a transparent planar structure. The thickness of the second substrate 210 is 0.01 mm to 1 cm, and the area is not limited, and may be selected according to actual conditions. The material of the second substrate 210 may be a hard material or a flexible material. 09712631#单编号删1 Page 15 of 36 1013175436-0 1380079 Modified on May 09, 101. The hard material may be one or more of glass, quartz, diamond or plastic. The flexible material may be polycarbonate (PC), polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polyether sulfone (PES), polyamidamine (PI). One or more of materials such as cellulose ester, benzocyclobutene (BCB), polyethylene (PVC), and acrylic resin. It is to be understood that the material forming the second substrate 210 is not limited to the materials listed above as long as the second substrate 210 is ensured to have a certain transparency.

[0052] In the embodiment of the technical solution, the second substrate 210 is also a polyethylene terephthalate (PET) film (hereinafter referred to as a PET film). The PET film has a thickness of 2 mm, a width of 20 cm, and a length of 30 cm. [0053] The method of forming a carbon nanotube layer on one surface of the second substrate 210 and spacingly forming two electrodes on both ends of the carbon nanotube layer or both ends of the second substrate 210 Forming a carbon nanotube layer on a surface of the first substrate 206 and spacing to form two electrodes at both ends of the carbon nanotube layer or both ends of the first substrate 206

[0054] (E), the first electrode plate 202 and the second electrode plate 204 are packaged to obtain a touch screen 200. Specifically, the method includes the following steps: [0055] (a), forming an insulating layer 214 around the second transparent conductive layer 212 of the second electrode plate 204. [0056] The insulating layer 214 may be made of an insulating transparent resin or other insulating transparent material. The insulating layer 214 is formed by applying an insulating adhesive to the periphery of the second transparent conductive layer 21 of the second electrode plate 204. The 09712631^^^11 A〇101 Page 16 of 36 1013175436-0 1380079 101.05月09日正正换页 Insulating adhesive is used as the insulating layer 214. [0057] (b) "covering the first electrode plate 2 〇 2 on the insulating layer 214, and the first transparent conductive layer 208 and the second transparent conductive layer 212 are oppositely disposed to obtain a touch screen 2 Hey. [0058] In this step, two electrodes on the first electrode plate 2〇2 and two electrodes on the second electrode plate 204 are disposed to be disposed again. [0059] Further, before the first electrode plate 2〇2 is covered on the insulating layer 214, a plurality of transparent dot spacers 216 may be formed on the first electrode plate 202 and the second electrode plate 2〇. Steps between 4. The transparent dot spacer 216 is formed by applying a bulk material including the plurality of transparent dot spacers 216 to a region outside the insulating layer 214 of the second electrode plate 2〇4, and forming after drying. The transparent dot spacers 21 6 . Both the insulating layer 214 and the transparent dot spacer 216 may be made of an insulating resin or other insulating material. Providing the insulating layer 214 and the dot spacers 216 may electrically insulate the first electrode plate 202 from the second electrode plate 2〇4. It can be understood that the dot spacer 216 is an optional structure when the size of the touch panel 200 is small, and it is only necessary to break the first electrode plate 202 and the second electrode plate 204 to be electrically insulated. [0060] It can be understood that, in this embodiment, an insulating layer 214 may be formed on the periphery of the first transparent conductive layer 208 of the first electrode plate 2〇2, and then the second electrode plate 204 may be covered on the insulating layer 214. Forming a touch screen 2 〇〇 ^ [0061] Further, after the touch screen 2 is formed, a transparent protective film 218 may be disposed on the other surface of the first substrate 2 〇 6 of the touch screen 200. The transparent protective 218 film may be formed by one or more of materials such as nitrite, strontium fossil, BCB polyester, and acrylic acid resin. The transparent protective 〇9712631 production number A0101 17 pages / total 36 pages 1013175436-0 1380079 101 years. May 09, the shuttle is varnish 218 can also be used a layer of hardened, smooth scratch-resistant plastic layer, such as polyethylene terephthalate A (PET) film for protecting the touch screen 200 to improve durability. The transparent protective film 218 can also be used to provide some other additional functions, such as reducing glare or reducing reflection. In the embodiment, the transparent protective film 218 is made of a viscous PET film, and the PET film can be directly adhered to the first The surface of the substrate 206 away from the first transparent conductive layer 208 serves as a transparent protective film 218.

[0062] (2) Forming a polarizing layer 220 on the surface of the second substrate 210 of the touch screen 200 away from the second transparent conductive layer 212, please refer to FIG. 6. [0063] The polarizing layer 220 is a carbon nanotube layer. The carbon nanotube layer comprises a plurality of carbon nanotube ordered membranes arranged in parallel without gaps or overlapping, and the arrangement of the carbon nanotubes in the adjacent two carbon nanotube ordered membranes is the same. The ordered arrangement of the carbon nanotubes includes a plurality of carbon nanotubes connected end to end and arranged in a preferred orientation. The plurality of carbon nanotubes are combined by Van der Waals force. On the one hand, the end-to-end carbon nanotubes are connected by van der Waals force; on the other hand, the carbon nanotubes of the preferred orientation are partially joined by van der Waal force. Therefore, the ordered carbon nanotube film has good self-supporting property and flexibility. [0064] The method of forming a carbon nanotube layer on the surface of the second substrate 210 is substantially the same as the method of forming a carbon nanotube layer on a surface of the first substrate 206 in the above step. The difference is that in this step, the carbon nanotube layer must be made of a carbon nanotube ordered film, and the arrangement of the carbon nanotubes in the adjacent two carbon nanotube ordered films is the same. The polarizing layer 220 has a thickness of 100 μm to 1 mm. 097脳#单号A〇101 1013175436-0 Page 18 of 36 1380079 101.05月09日 Shuttle replacement page [0065] It can be understood that the carbon nanotube has excellent conductivity and The polarizing layer 220 includes a plurality of carbon nanotubes arranged in the same direction. Therefore, the polarizing layer 220 has a function of a transparent electrode and a polarizer. [0066] (3) A first alignment layer 222 is formed on the surface of the polarizing layer 220 to form an upper substrate 20. [0067] The preparation method of the first alignment layer 222 mainly includes the following steps: [0068] First, an alignment film is formed on the surface of the polarizing layer 220. The material of the alignment film includes one or more of polystyrene and its derivatives, polyimine, polyvinyl alcohol, polyester, epoxy resin, polyurethane, and polydecane. The method of forming an alignment film is a screen printing method, a spray method, or the like. In the present embodiment, a layer of polyimine is formed as an alignment film on the surface of the polarizing layer 220 by spraying. [0069] Then, a plurality of minute grooves are formed on the surface of the alignment film to form the first alignment layer 2 22 . The method of forming a plurality of micro grooves may be a method such as a rubbing method, an oblique vapor deposition method, or a microgroove treatment on a film. Since the first alignment layer 222 is an optional component, this step is an optional step. [0070] Step 2: Prepare the substrate 30. Referring to FIG. 7, the method for preparing the substrate 30 specifically includes the following steps: [0071] (1) Preparing a thin film transistor panel 300, specifically comprising the following step [0072] (A), providing a third substrate 302. Includes two opposing surfaces. [0073] The material and size of the third substrate 302 and the second substrate 210 are respectively 0971263# single weave A 〇 101 page 19 / total 36 pages 1013175436-0 1380079 101. May 09 correction replacement page with 0 (B), a thin film transistor array 304 is formed on a surface of the third substrate 302 to form a thin film transistor panel 300. [0075] The thin film transistor array 304 may include an amorphous germanium thin film transistor, a polycrystalline germanium thin film transistor, an organic thin film transistor, or a zinc oxide thin film transistor. The method of forming the thin film transistor array 304 is not limited. In this embodiment, the thin film transistor array 304 is a polycrystalline germanium thin film transistor array.

[0026] (2) Forming a second alignment layer 306 overlying the thin film transistor array 304. [0077] The method of forming a second alignment layer 306 over the thin film transistor array 304 is the same as the method of forming a first alignment layer 222 on the surface of the polarizing layer 220. Since the second alignment layer 306 is an optional component, this step is an optional step. [0078] (3) A polarizer 308 is disposed on a surface of the third substrate 302 away from the thin film transistor array 304 to form a lower substrate 30. [0079] The polarizer 308 may be a metal polarizer, an iodine polarizer, a dye-based polarizer or a polyethylene polarizer. The polarizer 308 is fixed on a surface of the third substrate 302 away from the thin film transistor array 304 by a transparent adhesive, and the light polarization direction of the polarizer 308 and the polarization direction of the polarizing layer 220 are perpendicular to each other. The polarizer 308 has a thickness of 10 micrometers to 1000 micrometers. When a polarized light source is used, the polarizer 308 is an optional component, so this step is an optional step. [0080] Step 3: setting a liquid crystal layer 40 on the first alignment layer of the upper substrate 20, deleting the number of the first alignment layer, and deleting the first and second alignment layers. A sandwich structure is formed between the second alignment layers 3〇6 of the substrate 30 to form a touch liquid crystal display panel. The method for forming a sandwich structure between the first alignment layer 222 of the upper substrate 20 and the second alignment layer 306 of the lower substrate 30 is specifically included in the following steps: [0082] Firstly Dropping the liquid crystal material to the surface of the first alignment layer 222 of the upper substrate 20 or the second alignment layer 306 of the lower substrate 30 to form a liquid crystal layer 4 in this embodiment 'takes a certain amount of liquid crystal material by using a dropper, Then, it is dropped onto the surface of the second alignment layer 306 of the lower substrate 30 to form a liquid crystal layer 4, which includes a plurality of long rod-shaped liquid crystal molecules. [0083] Next, the alignment layer of the other substrate is laid next to the liquid crystal layer 40, and the edges of the plurality of micro trenches on the first alignment layer 222 of the upper substrate 20 and the second alignment layer 306 of the lower substrate 30 are ensured. The extension directions are perpendicular to each other. [0084] Finally, the periphery of the upper substrate 20 and the lower substrate 30 is sealed with a sealant. In this embodiment, the sealant is a 706B type yttrium sulfide rubber. The sealant is applied to the edges of the upper substrate 2 and the lower substrate 30 which are disposed opposite each other, and is allowed to solidify after being left for one day. [0085] It can be understood that a liquid crystal layer 40 can be disposed between the first alignment layer 222 of the upper substrate 2 and the second alignment layer 306 of the lower substrate 30 by using the following method. Specifically, the following steps are included: [0086] First, the upper substrate 20 and the lower substrate 30 are disposed in parallel and spaced apart, and the first alignment layer 222 and the second alignment layer 306 are opposite each other. 09712631^^'^^ A〇101 Page 21 of 36 Page 1013175436-0 1380079 -- 101.05.09. Press the replacement page [0087] Then, the periphery of the upper substrate 20 and the lower substrate 30 are sealed. The glue is sealed and a small hole is retained. Finally, a certain amount of liquid crystal material is injected into the upper substrate 20 and the lower substrate 30 through the small holes to form a liquid crystal layer 40, and sealed to obtain a touch liquid crystal display 10 .

[0089] Further, in order to maintain the spacing between the upper substrate 20 and the lower substrate 30, a plurality of transparent spacers may be disposed between the upper substrate 20 and the lower substrate 30 before the liquid crystal layer 40 is disposed (not shown in the figure). Out). The material and size of the spacer can be selected according to actual needs. In this embodiment, a micro-polyethylene (PE) pellet of 10 micrometers is ultrasonically dispersed in anhydrous ethanol, and a small amount of the above solution is taken up by a pipette and dropped on the surface of the first alignment layer 306 of the lower substrate 30. After the ethanol is volatilized, the remaining PE beads will act as spacers. [0090] The method for preparing the touch liquid crystal display 10 provided by the embodiment of the present technical solution has the following advantages: First, since the carbon nanotube layer has excellent mechanical properties and is resistant to bending, the above-mentioned nanometer is used. The carbon tube layer is used as a transparent conductive layer, so that the transparent conductive layer has good toughness and mechanical strength. Further, in cooperation with the flexible substrate, a flexible touch type liquid crystal display 10 can be prepared, which is suitable for use on a flexible display device. Secondly, since the carbon nanotube film provided in the embodiment is obtained by pulling a drawing tool, the method does not require a vacuum environment and a heating process, so the carbon nanotube film prepared by the above method is used as a transparent conductive. The layer and the prepared touch liquid crystal display 10 have the advantages of low cost, environmental protection and energy saving. Thirdly, since the carbon nanotubes in the polarizing layer 220 are arranged in the same direction and have a polarizing effect, the junction of the touch liquid crystal display 10 can be simplified. Page 1013175436-0 1380079 101. May 09th to receive the key ^ page structure. Fourthly, since the carbon nanotube film provided in the embodiment can be bonded to the substrate by a heat pressing process, the manufacturing cost is reduced and the manufacturing process is simplified. Further, in the hot pressing process of the present embodiment, the temperature requirement is low, so that the temperature limit of the base material is small. [0091] 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. Equivalent modifications or variations made by those skilled in the art to the spirit of the invention are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS [0092] FIG. 1 is a flow chart showing a method of fabricating a touch liquid crystal display according to an embodiment of the present technology. 2 is a schematic structural view of a touch liquid crystal display according to an embodiment of the present technology. [0094] FIG. 3 is a flow chart of a process for preparing a touch screen according to an embodiment of the present technology. [0095] FIG. 4 is a scanning electron micrograph of a carbon nanotube film in an embodiment of the present technical solution. [0096] FIG. 5 is a sound diagram of a hot pressing process according to an embodiment of the present technical solution. 6 is a flow chart of a process for preparing an upper substrate according to an embodiment of the present technology. _8] FIG. 7 is a flow chart of a process for preparing a lower substrate according to an embodiment of the present technical solution. [Main component symbol description] [0099] Touch liquid crystal display: 1 〇 [0100] Upper substrate: 2 0 09712631 #单号: A0101 Page 23 / Total 36 1013175436-0 1380079 [0101] Touch screen: 200 [0102] First electrode plate: 202 [0103] Second electrode plate: 204 [0104] First substrate: 206 [0105] First transparent conductive layer: 208 [0106] Second substrate: 210 [0107] Second transparent conductive layer : 212 [0108] Insulating layer: 214 [0109] Transparent dot spacer: 216 [0110] Transparent protective film: 218 [0111] Polarizing layer: 220 [0112] First alignment layer: 222 [0113] Lower substrate: 30 Thin Film Transistor Panel: 300 [0115] Third Substrate: 302 [0116] Thin Film Transistor Array: 304 [0117] Second Alignment Layer: 306 [0118] Polarizer: 308 [0119] Liquid Crystal Layer. 4 0 097 brain product number A〇101 Page 24 of 36 page 101. May 09 shuttle replacement page

1013175436-0 1380079 [0120] Hot pressing device: 50 [0121] Metal roll: 52 09712631 #单号 A〇101 Page 25 of 36 101. May 09 revised replacement page 1013175436-0

Claims (1)

1380079 101.05月09日修正Replacement π VII, patent application scope·· 1. A method for preparing a touch liquid crystal display, comprising the following steps: preparing a resistive touch screen, wherein the transparent conductive layer of the touch screen adopts a a carbon nanotube layer, the carbon nanotube layer is prepared by a rolling method or a film drawing method, and the carbon nanotube layer includes at least a plurality of nano-titaniums arranged in the same direction, forming a polarized light. Layered on a surface of the touch screen; Forming a thin film transistor panel, the thin film transistor panel comprising a thin film transistor array; and providing a liquid crystal layer to form a sandwich structure between the polarizing layer of the touch screen and the thin film transistor array of the thin film transistor panel, thereby obtaining a sandwich structure The touch LCD does not display. The method for preparing a touch liquid crystal display according to claim 1, wherein the method for preparing a touch screen comprises the following steps: providing a first substrate comprising two opposite surfaces; forming a a carbon nanotube layer on a surface of the first substrate; two electrodes are formed at intervals on both ends of the carbon nanotube layer or both ends of the first substrate, and electrically connected to the carbon nanotube layer Forming a wide electrode plate; providing a second substrate comprising two opposite surfaces; forming a carbon nanotube layer on a surface of the second substrate; forming two electrodes at intervals on the carbon nanotube layer The two ends of the second substrate or the two ends of the second substrate are electrically connected to the carbon nanotube layer to form a second electrode plate to form an insulating layer on the first electrode plate or the second electrode plate. 09712631^^^^* Α〇101 Page 26 of 36 Page 1013175436-0 1380079 On May 09, 101, the periphery of the replacement page layer is replaced; and another electrode plate is covered on the insulating layer, and the carbon nanotube layer of the first electrode plate is opposite to the carbon nanotube layer of the second electrode plate. The method for preparing a touch liquid crystal display according to claim 2, wherein the material of the first substrate is a flexible material, and the flexible material comprises polycarbonate and polymethyl. One or more of methyl acrylate, polyethylene terephthalate, polyether, poly-liminamide, cellulose ester, stupid cyclobutene, polyethylene oxide or acrylic resin. 4. The method for preparing a touch liquid crystal display according to claim 2, wherein the method of forming a carbon nanotube layer on a surface of the substrate comprises the following steps: preparing at least one carbon nanotube a film; the at least one carbon nanotube film is laid on the surface of the substrate to form a carbon nanotube layer. The method for preparing a touch liquid crystal display according to claim 4, wherein the method for preparing at least one carbon nanotube film specifically comprises the steps of: providing a carbon nanotube array; A portion of the carbon nanotube array is selected to have a certain width of the carbon nanotube; the portion of the carbon nanotube is stretched at a constant speed along a direction substantially perpendicular to the growth of the carbon nanotube array to form a continuous carbon nanotube film. 6. The method of preparing a touch liquid crystal display according to claim 5, wherein after the drawing obtains the carbon nanotube film, the method further comprises the step of laser treating the carbon nanotube film. The method for preparing a touch liquid crystal display according to claim 4, wherein the forming the carbon nanotube layer on the surface of the substrate further comprises treating the carbon nanotube with an organic solvent. Step of the layer, the 0971263## single number AQ1Q1 ^ 27 I / ^ 36 I 1013175436-0 1380079 101. The first step of the nuclear replacement is as follows: the organic solvent is dropped on the surface of the carbon nanotube layer through a test tube Alternatively, the substrate in which the carbon nanotube layer is formed is entirely immersed in a container containing an organic solvent to be infiltrated. The method for preparing a touch liquid crystal display according to claim 2, wherein the method of forming a carbon nanotube layer on a surface of the substrate comprises the following steps: coating a polymer material solution Laminating on the surface of the substrate; uniformly dispersing the polymer material solution into the carbon nanotube layer: solidifying to form a nano carbon-tube composite layer. 9. The preparation method of the touch liquid crystal display system as claimed in claim 2 In the step of covering the other electrode plate on the insulating layer, the two electrodes of the first electrode plate are disposed to intersect the two electrodes of the second electrode plate. The method for fabricating a touch liquid crystal display according to claim 1, wherein a first alignment layer is further formed on a surface of the polarizing layer of the touch screen, and a second alignment layer is formed on the thin film transistor panel. The surface of the thin film transistor array. The method for preparing a touch liquid crystal display according to claim 1, wherein the method of forming a polarizing layer on the surface of the touch screen comprises the steps of: providing an array of carbon nanotubes; Selecting a portion of the carbon nanotubes of a certain width in the tube array; stretching the portion of the carbon nanotubes at a certain speed along a growth direction substantially perpendicular to the growth direction of the carbon nanotube array to form a continuous carbon nanotube film; a carbon nanotube film is directly laid on the surface of the touch screen or a plurality of carbon nanotube films are laid on the surface of the touch screen in parallel and without gaps to form a nano carbon covering the surface of the touch screen Pipe layer. The method for preparing a touch liquid crystal display according to claim 11, wherein the at least one carbon nanotube film is laid on the touch screen table 09712631^^11 A〇101 page 28/total 36 Page 1013175436-0 丄JWU/y 1101 Ό May 09 The surface step is: stacking at least two nano-domain tube films on the surface of the mold screen to form a plurality of carbon nanotube layers, and the plural The carbon nanotube layers are overlapped at an intersection angle α according to the arrangement direction of the carbon directors, and 〇° a 90. . 3. For example, Shen Qing patent scope! The method for preparing a touch liquid crystal display device, wherein the method for preparing a thin film transistor panel comprises the following steps: providing a third substrate comprising two opposite surfaces; forming a thin tantalum The crystal array is on a surface of the third substrate to form a thin film transistor panel. The method for preparing a touch liquid crystal display according to claim 1, wherein after the preparation of a thin film transistor panel, the method further comprises: disposing a polarizer on the thin film transistor panel away from the thin film; In the step of the surface of the transistor array, the polarizer is a metal polarizer, an iodine-based polarizer, a dye-based polarizer or a polyethylene polarizer, and the light polarization direction of the polarizer is perpendicular to the light polarization direction of the polarizing layer. 09712631#单号 A0101 Page 29 of 36 1013175436-0