WO2004070810A1 - 表示装置の製造方法 - Google Patents
表示装置の製造方法 Download PDFInfo
- Publication number
- WO2004070810A1 WO2004070810A1 PCT/JP2004/000930 JP2004000930W WO2004070810A1 WO 2004070810 A1 WO2004070810 A1 WO 2004070810A1 JP 2004000930 W JP2004000930 W JP 2004000930W WO 2004070810 A1 WO2004070810 A1 WO 2004070810A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- film
- forming
- pattern
- gas
- plasma
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating
- H10K71/13—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/20—Changing the shape of the active layer in the devices, e.g. patterning
- H10K71/231—Changing the shape of the active layer in the devices, e.g. patterning by etching of existing layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/20—Changing the shape of the active layer in the devices, e.g. patterning
- H10K71/231—Changing the shape of the active layer in the devices, e.g. patterning by etching of existing layers
- H10K71/236—Changing the shape of the active layer in the devices, e.g. patterning by etching of existing layers using printing techniques, e.g. applying the etch liquid using an ink jet printer
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/60—Forming conductive regions or layers, e.g. electrodes
- H10K71/611—Forming conductive regions or layers, e.g. electrodes using printing deposition, e.g. ink jet printing
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
Definitions
- the present invention relates to a method for manufacturing a display device that displays images and the like by arranging pixels on a plane, and more particularly, to a technique for continuously manufacturing the display device using a flexible substrate.
- liquid crystal display device As a specific product form of a display device (liquid crystal display device) utilizing the electro-optical properties of liquid crystal, a computer monitor device (liquid crystal monitor) and a television receiver (liquid crystal television) are commercially available.
- active matrix type liquid crystal display devices which are the mainstream, have a pixel configuration in which each pixel is provided with a switching element called a thin film transistor (TFT).
- TFT thin film transistor
- Such a display device manufacturing technology appropriately combines a photolithography process using a photomask, a film forming process using a vacuum device, an etching process, and the like. It has become something.
- Such a manufacturing process involves forming a film, such as a conductor, an insulator, or a semiconductor film, by a sputtering method or a chemical vapor deposition (CVD) method, and applying a photosensitive resist film on the film. After exposing the resist film through a mask using a projection exposure apparatus, the resist film is immersed in a developing solution to form a desired pattern, and a process of etching with a solution or an active reactive gas is combined. This is to be repeated. Disclosure of the invention
- the conventional display device manufacturing technology discards most of the materials, not only affecting the manufacturing cost but also increasing the environmental load. This tendency has become more evident as the size of substrates flowing through the production line has increased.
- the present invention has been made in view of such a problem, and aims to reduce the amount of material consumed for manufacturing a display device, to simplify the manufacturing process and the device used for the same, and to reduce the manufacturing cost.
- the purpose is to.
- a pattern such as a contact hole formed on a semiconductor film, a wiring, or an insulating film, or a mask pattern of a composition made of a polymer resin for forming a pattern thereof is directly drawn.
- Means to form A technique for manufacturing a display device by applying means for removing a film such as etching or assing and film forming means for selectively forming an insulating film, a semiconductor film, and a metal film in a predetermined region is adopted.
- the present invention provides a pattern drawing means having a droplet discharge means in which a plurality of discharge ports for a composition are arranged in a uniaxial direction; A film removing means for removing the film formed by the above-mentioned method, and a film forming means for forming gas into a plasma and forming a film by arranging a plurality of plasma ejection ports in a uniaxial direction and forming the film. A step of forming an insulating film, a semiconductor film, a metal film, and other films by forming means; and forming a wiring pattern by drawing a composition containing a conductive material on a substrate by the pattern drawing means.
- Forming a mask pattern by drawing a polymer resin composition on the substrate by the pattern forming means; and forming a mask pattern on the substrate by the film removing means.
- the present invention provides a method of forming a pattern of a conductive film including a gate electrode, a source electrode, and a drain electrode by a pattern drawing unit including a droplet discharge unit in which a plurality of discharge ports of the composition are arranged in a uniaxial direction.
- film forming means for forming a film by plasma-forming gas and forming a film by arranging a plurality of plasma outlets in a uniaxial direction;
- Each of the above steps can be performed under atmospheric pressure or a pressure close to atmospheric pressure.
- the atmospheric pressure or pressure near atmospheric pressure, 1. 3 X 1 0 ' ⁇ 1. 0 may be set to 6 X 1 0 5 P a.
- a composition for discharging the composition using a piezoelectric element as in an ink jet method as a droplet discharging means having a discharge port for the composition, and a removal amount by providing a 21 dollar valve in the discharge port It is possible to apply a configuration for controlling
- a conductive composition containing fine metal particles having a particle size of about 1 m, a fine metal particle having a particle size of about 1 m, It is preferable to use fine particles (nano particles) dispersed in a conductive polymer composition.
- the film forming means has a nozzle body in which a plurality of gas ejection ports for a plasma gas or a gas containing reactive radicals or ionic species are arranged in a uniaxial direction.
- the film removing means has the same configuration, but can be used properly by appropriately selecting the gas to be introduced.
- a typical reactive gas applied in the film forming means is a silicide gas such as silane, and can form a non-single-crystal semiconductor film.
- an oxide gas such as oxygen or nitrous oxide or a nitride gas such as nitrogen or ammonia
- the An insulating film such as silicon or silicon nitride can be formed.
- Typical reactive gases used in the film removing means include fluoride gases such as nitrogen trifluoride and sulfur hexafluoride, and chloride gases such as chlorine and boron trichloride, to form semiconductor films.
- fluoride gases such as nitrogen trifluoride and sulfur hexafluoride
- chloride gases such as chlorine and boron trichloride
- a display device can be formed over a flexible substrate without using a photomask.
- each of the step of forming a film, the step of forming a wiring pattern, the etching step, and the step of removing the mask pattern may be performed under atmospheric pressure or a pressure close to atmospheric pressure. Can be.
- FIG. 1 is a diagram illustrating a manufacturing process of a display device according to the present invention, and is a diagram illustrating an example using a roll-to-roll method.
- FIG. 2 is a diagram illustrating a manufacturing process of the display device according to the present invention, and is a diagram illustrating an example using a roll-to-roll method.
- FIG. 3 is a diagram illustrating a manufacturing process of the display device according to the present invention, and is a diagram illustrating an example using a roll-to-roll method.
- FIGS. 4A and 4B are views showing an example of the pattern drawing means according to the present invention.
- FIG. 5 is a diagram showing an example of the pattern drawing means according to the present invention.
- FIGS. 6A and 6B show the film forming means or film removing means according to the present invention. It is a figure showing an example of.
- FIG. 7 is a view showing a configuration of a nozzle body in a film forming means or a film removing means according to the present invention.
- FIG. 8 is a diagram showing a configuration of a nozzle body in a film forming means or a film removing means according to the present invention.
- 9A to 9D are cross-sectional views illustrating the steps of manufacturing a display device according to the present invention.
- 10A to 10D are cross-sectional views illustrating the steps of manufacturing a display device according to the present invention.
- FIG. 11A to FIG. 11D are cross-sectional views illustrating the steps of manufacturing a display device according to the present invention.
- FIG. 12 is a cross-sectional view illustrating a process for manufacturing a display device according to the present invention.
- FIGS. 13A to 13D are cross-sectional views illustrating the steps of manufacturing the display device of the present invention.
- FIGS. 14A to 14D are cross-sectional views illustrating the steps of manufacturing a display device according to the present invention.
- FIG. 15A to FIG. 15C are cross-sectional views illustrating the steps of manufacturing a display device according to the present invention.
- FIG. 16A to FIG. 16C are diagrams illustrating one embodiment of the display device of the present invention.
- the present invention uses a method in which a flexible substrate is continuously sent out from one end to the other end, and a predetermined processing is performed between them. That is, a so-called roll-to-roll process is performed, in which a flexible substrate is unwound from one roll and conveyed, and is wound around the other roll.
- Droplet discharging means 4 for discharging the composition onto the flexible substrate 400 while the flexible substrate 400 is sent out from the other roll 401 and wound up by the other roll 402 0 3 is provided.
- the droplet discharging means 4003 uses a plurality of heads 405 having discharge ports 406, and arranges them in a uniaxial direction (the width direction of the flexible substrate 400). It is.
- the imaging means 404 is provided for detecting a marker position on the flexible substrate 400 and observing a pattern.
- FIG. 4A is a schematic view from the side
- FIG. 4B is a schematic view from the top.
- the droplet discharge means 403 in which the discharge ports 406 are arranged in the negative axial direction is arranged so as to intersect the transport direction of the flexible substrate 400.
- the angle formed between the droplet discharge means 403 and the direction of transport of the substrate does not necessarily have to be orthogonal, but may intersect at an angle of 45 to 90 degrees.
- the resolution of the pattern formed by the droplet discharge means 403 is determined by the interval (pitch) between the discharge ports 406, and the angle intersecting the transport direction of the flexible substrate 400 is 90 degrees.
- the pitch of the discharge port is substantially This is preferable for the purpose of forming a fine pattern.
- the head 405 of the droplet discharge means 403 may be any one that can control the amount and timing of the composition to be discharged or dropped, and discharges the composition using a piezoelectric element as in an ink jet method.
- the configuration and the configuration in which a drop valve is provided by providing a twenty-one valve at the discharge port may be used.
- the heads 405 constituting the droplet discharging means 403 need not always perform the discharging operation at the same timing at the same time, and the individual heads 405 correspond to the movement of the flexible substrate 404. By controlling the timing at which the composition ejects the composition, it is possible to form a pattern using the desired composition.
- the individual heads 405 of the droplet discharge means 403 are connected to the control means 407, which is programmed in advance by being controlled by the computer 410.
- the information on the pattern to be formed on the flexible substrate 400 is stored in the storage medium 408, and a control signal is sent to the control means 407 based on this information,
- the individual heads 405 of the droplet discharge means 403 can be individually controlled.
- FIGS. 6A and 6B show one example of a film removing means that has a nozzle body in which a plurality of gas ejection ports for gasified plasma or a gas containing reactive radicals or ionic species are arranged in a uniaxial direction, and removes a film. It is a figure showing an aspect.
- a nozzle provided with a plurality of outlets 65 for ejecting the reactive gas while the flexible substrate 600 is sent out from the roll 6001 and wound up by the other roll 6.22
- a body 63 is provided.
- the plasma generating means 606, the gas supply means 607, and the gas exhaust means 608 are connected to the individual ejection ports 605 of the nozzle body 603.
- the individual nozzle bodies 603 can be independently controlled by a computer, and based on the image information (position information) of the imaging means 604.
- a predetermined process can be performed by selectively ejecting a reactive gas to a predetermined region of the flexible substrate 600.
- the coating is a polymer composition typified by a photoresist material
- a so-called assing treatment for removing the composition can be performed by using a gas containing oxygen as the gas.
- a silicide gas typified by silane or the like it becomes possible to deposit a film, which can be applied as a film forming means.
- a silicide gas typified by silane may be used. Oxygenation of nitrous oxide to silicide gas By mixing a substance gas or a nitride gas, a silicon oxide film or a silicon nitride film can be formed.
- FIG. 7 shows a configuration of a nozzle body particularly suitable for performing a surface treatment such as etching and assing (removal of a resist film) using a plasma gas or a reactive radical or ion species.
- Gas supply means 703 and gas exhaust means 706 for supplying gas for performing surface treatments such as etching and asthing to the nozzle body 701, and inert gas supply means 707 and exhaust means for the nozzle 701 10 is connected.
- the gas supplied from the gas supply means 703 is converted into plasma or generates reactive radicals or ionic species in the inner peripheral gas supply cylinder 700 to be processed through the gas outlet 704. Spray. Thereafter, the gas is exhausted from the outer gas exhaust cylinder 705 by the gas exhaust means 706.
- An inert gas supply port 708 is provided in the outer hull, and a gas curtain is formed by providing an exhaust port 709 in the outermost hull, so that the processing space and the surrounding atmosphere are shut off. I have.
- a gas purification means 712 may be provided between the gas supply means 703 and the gas discharge means 706, and a configuration for circulating the gas may be incorporated. By incorporating such a configuration, gas consumption can be reduced. Alternatively, the gas exhausted from the gas exhaust means 706 may be collected and purified, and used again in the gas supply means 703.
- the distance between the nozzle body 701 and the object to be treated is preferably 50 mm or less, and is preferably It may be 10 mm or less, more preferably 5 mm or less.
- the shape of the nozzle body is most preferably a coaxial cylindrical shape centered on an electrode 702 provided inside the inner gas supply cylinder 700, but similarly, the processing gas locally formed into plasma.
- the present invention is not limited to this as long as it is capable of supplying the same.
- the electrode 720 may be made of stainless steel, brass, other alloys, aluminum, nickel, or other simple metals, and may be formed in a shape such as a rod, a sphere, a flat plate, or a tube.
- a DC power supply or a high-frequency power supply can be used as the power supply 711 for supplying power to the electrode 702.
- a DC power supply it is preferable to supply power intermittently in order to stabilize the discharge.
- the frequency is 50 Hz to 100 kHz, and the pulse duration is 1 to 1 OOO iti sec. Is preferred.
- oxygen may be used for the purpose of removing the resist.
- a semiconductor film such as silicon
- nitrogen trifluoride (NF 3 ) nitrogen trifluoride
- sulfur hexafluoride (SF 6 ) sulfur hexafluoride
- metals such as aluminum, titanium, and tungsten are used for etching.
- carbon tetrafluoride the purpose of quenching (CF 4), sulfur hexafluoride (SF 6), and other fluoride gases, chlorine (C 1 2), boron trichloride (BC 1 3), and other chlorides What is necessary is just to use suitably combining gas.
- these fluoride gas and chloride gas may be diluted with a rare gas such as helium, argon, krypton, or xenon.
- the gas used to form the gas curtain is a rare gas such as helium, argon, krypton, or xenon, or an inert gas such as nitrogen.
- Pressure atmospheric pressure or near atmospheric pressure is, 1. 3 X 1 ( ⁇ 1. 0 6 X 1 0 5 may be the P a.
- the nozzle in order to keep the reaction space under reduced pressure than the atmospheric pressure
- the body 701 and the substrate to be processed may be held in a reaction chamber forming a closed space, and the depressurized state may be maintained by the exhaust means. It is effective to install
- the nozzle body 800 restricts the gas outlet 704 of the inner peripheral gas supply cylinder 800
- the electrode 802 may be a rod-shaped or needle-shaped electrode to suppress the spread of plasma. Further, the tip of the electrode 802 may protrude from the gas ejection port 704 so that high-density plasma may be formed between the electrode 802 and the object 811.
- Other configurations are the same as those in FIG. 7, and the detailed description thereof is omitted.
- the display device exemplified here is an active matrix display device in which a TFT is provided for each pixel. This is the 13s home patent iaa 2o.
- FIG. 9D shows a step of forming a conductive film to form a gate electrode and a wiring.
- a conductive film 11 such as aluminum, titanium, tantalum, or molybdenum is formed on a substrate 10 by a film forming means 12 provided with a nozzle body having a plurality of plasma ejection ports arranged in a uniaxial direction.
- the conductive film 11 does not need to be formed on the entire surface of the substrate 10 and may be formed selectively near the region where the gate electrode and the wiring are formed.
- the resist composition is selectively discharged by droplet discharge means 13 in which a plurality of discharge ports of the composition are arranged in a uniaxial direction to form a gate electrode.
- Pattern 14 is formed on conductive film 11.
- the droplet discharge means since the discharge ports are arranged only in one axis direction, the head only needs to be operated at a necessary portion (head 13a), and the entire surface of the substrate is covered.
- one of the substrate 10 and the droplet discharge means 13 or both of them may be moved. Such processing is the same in the following steps.
- FIG. 9C shows a step of performing etching using the mask pattern 14 to form the gate electrode and the wiring 16.
- the etching is performed using a film removing means in which a plurality of plasma outlets are arranged in a uniaxial direction to remove the film.
- Fluoride gas or chloride gas is used for etching the conductive film 11.
- this reactive gas does not need to be sprayed on the entire surface of the substrate 10.
- the nozzle body 15a facing the region where the conductive film 11 is formed is operated, and only that region is processed! ⁇ ( ⁇ 14
- FIG. 9D shows a step of removing the mask pattern 14 using a film removing means for removing a film by arranging a plurality of plasma outlets in a uniaxial direction.
- Oxygen plasma treatment is performed on the nozzle body 17 to perform asshing. However, it is not necessary to perform oxygen plasma processing on the entire surface of the substrate, and the nozzle body 17 a is provided only near the area where the mask pattern is formed. May be operated to selectively perform the processing.
- a gate insulating film 19, a non-single-crystal silicon film 20 and a protective film 21 are formed.
- a plurality of nozzle bodies 18 each of which is in charge of forming a coating may be prepared and formed continuously, or a reaction gas may be formed every time the nozzle body 18 is scanned once.
- the seeds may be switched to form a layered structure. Since the region where the film is to be formed is not the entire surface of the substrate 10, for example, only the region where the TFT is to be formed is supplied with a reaction gas in the form of plasma from the entire surface of the nozzle 18 to form the film. May be performed.
- the gate insulating film 19 may be formed over the entire surface of the substrate, or may be formed selectively near the region where the TFT is formed.
- FIG. 10B shows a step of forming a mask pattern 23.
- the resist is formed by a selected head 22a of a droplet discharge means 22 in which a plurality of discharge ports of the composition are arranged in a single axial direction.
- the composition is selectively discharged to form a mask pattern 23 for forming a protective film in the channel portion.
- FIG. 10C shows a step of forming the protective film 25 in the channel portion by etching the protective film 21 with the nozzle body 24 using the mask pattern 23.
- Channel protection film formed of a silicon nitride film may be performed using a fluoride gas such as SF 6.
- the mask pattern 23 is removed by a film removing means in the same manner as in the case of FIG. 9D.
- FIG. 10D shows a step of forming a one-conductivity-type non-single-crystal silicon film 27 for forming a source and a drain of TFT.
- the reactive gas supplied from the nozzle body 26 is a silicide gas such as silane and a group 1-5 element of the periodic rule represented by phosphine. May be performed by mixing a gas containing
- FIG. 11A shows a process in which a conductive paste is applied to form source and drain wirings 29 and 30.
- the droplet discharging means 28 may be configured to discharge droplets using a piezoelectric element, or may be of a dispenser type.
- the conductive composition containing fine metal particles having a particle size of about 1 m is selectively dropped by the selected head 28 a of the droplet discharge means 28, and the source and the source are selectively dropped.
- the pattern of the drain wirings 29 and 30 is formed directly.
- a material obtained by dispersing metal fine particles having a particle size of about 1 and ultrafine particles having a nanometer size in a conductive polymer composition may be used.
- FIG. 11B shows the etching of the one-conductivity type non-single-crystal silicon film 27 and the non-single-crystal silicon film 20 located under the source and drain wirings 29 and 30 as masks. Do. Etching is performed by irradiating plasma-generated fluoride gas from the nozzle body 31.
- the amount of the reactive gas to be blown is different between the vicinity of the wiring formation region and the other regions, and a large amount of the reactive gas is sprayed in the region where the non-single-crystal silicon film is exposed, Etching is balanced, and the consumption of reactive gas can be reduced.
- FIG. 11C shows a process of forming a protective film on the entire surface, in which a reactive gas converted into plasma is ejected from the nozzle body 32 to typically form a silicon nitride film 33. .
- Fig. 11D shows the formation of contact holes.
- a reactive gas which has been turned into plasma, is selectively ejected to the locations where the contact holes are to be formed. Forming can take place.
- a pixel electrode 37 is formed by a printing method. This is formed by forming a composition containing powder of conductive particles such as indium tin oxide, tin oxide, and zinc oxide in a predetermined pattern directly on the substrate using the droplet discharging means 36. As this composition, a composition in which fine particles of indium tin oxide are dispersed in a conductive polymer should be used. Thereby, in particular, the resistance of the contact portion with one-conductivity-type non-single-crystal silicon film 27 can be reduced. In this step, a pixel electrode is formed.
- an element substrate which is one of the substrates for forming an active matrix display device in which a TFT switching element is provided for each pixel, is manufactured without using a conventional photolithography process. Can be.
- a mask pattern using a resist composition is used by using the pattern drawing means, the film forming means, and the film removing means having the structure described with reference to FIGS. And a TFT and a display device using the same can be manufactured.
- a bank 51 made of an insulating resin material is formed on a substrate 10 by using a droplet discharging means 50.
- the bank 51 having the opening 49 is used when the gate electrode 53 is formed by the droplet discharging means 52 as shown in FIG. 13B. That is, when the conductive composition is discharged into the openings 49, the partition walls serve to form a predetermined pattern without spreading the composition around.
- FIG. 13C shows a step of forming a gate insulating film, in which a gate insulating film 55 is formed on a gate electrode 53 using a nozzle body 54.
- a semiconductor film 57 is formed by atmospheric pressure plasma using a nozzle body 56.
- Figure 14A shows a semiconductor film by atmospheric pressure plasma using a nozzle body 58. This is a step of forming a protective film 59 on 57, and selectively forms an insulating film such as silicon oxide / silicon nitride. This step is not required for channel etch.
- FIG. 14B shows a step of forming a one-conductivity type semiconductor film 61 for forming a source and a drain of the TFT.
- the film is selectively formed by an atmospheric pressure plasma CVD method using a nozzle body 60. Perform formation.
- a conductive paste is applied to form source and drain wirings 63.
- the droplet discharging means 62 may be configured to discharge droplets using a piezoelectric element, or may be of a dispenser type.
- a conductive composition containing fine metal particles having a particle size of about 1 is selectively dropped to directly form the source and drain wiring patterns.
- a heated inert gas may be similarly sprayed from a nozzle body, or heating may be performed using a halogen lamp heater.
- the one-conductivity-type semiconductor film 61 located on the lower layer side is etched. Etching is performed by irradiating plasma-generated fluoride gas from the nozzle body 64. In this case as well, the amount of the reactive gas to be blown is different between the vicinity of the wiring forming region and the other regions, and a large amount of the reactive gas is sprayed in the region where the non-single-crystal silicon film is exposed, Etching is balanced, and the consumption of reactive gas can be reduced.
- Fig. 15A shows the process of forming the protective film.
- the silicon nitride film 66 is formed by ejecting the reactive gas that has been converted into a gas.
- Fig. 15B shows the formation of contact holes.
- the contact holes 68 are formed masklessly by using a nozzle body 67 to jet reactive gas, which is selectively turned into plasma, at the locations where the contact holes are to be formed. It can be formed.
- a pixel electrode 70 is formed by a printing method.
- a composition containing powder of conductive particles such as indium tin oxide, tin oxide, and zinc oxide is formed by a droplet discharging method, and a predetermined pattern is formed directly on a substrate using a nozzle body 69. It is formed by forming it. In this step, a pixel electrode can be formed.
- an element substrate which is one of the substrates for forming an active matrix display device in which a TFT switching element is provided for each pixel, is manufactured without using a conventional photolithography process. be able to.
- FIG. 1 to FIG. 4 are views for explaining an embodiment in the case of applying the present invention to a roll-to-roll system in which the above steps are continuously performed.
- one embodiment will be described in association with the steps shown in FIGS.
- a flexible long substrate 100 is sequentially sent out from a port 101 on the unwinding side, and thereafter, a droplet discharging means 102 and a heating means 103 are provided.
- a heating means 103 a lamp heater or a gas heating type heater can be used. Then, the droplet discharge means 1 20 JPO J 3 ⁇ '
- a mask pattern is formed by the heating means 104 and the heating means 105.
- etching is performed using a nozzle body 106 for removing a coating film by arranging a plurality of plasma ejection ports in a uniaxial direction.
- Fluoride gas or chloride gas is used for etching of the metal film.
- this reactive gas does not need to be sprayed on the entire surface of the substrate, and is active in the vicinity where the metal film is removed. What is necessary is just to process it.
- the mask pattern is removed by a nozzle body 10 in which a plurality of plasma ejection ports are arranged uniaxially to remove the coating.
- a gate insulating film, a non-single-crystal silicon film, and a protective film is performed by a nozzle body 108 in which a plurality of plasma jet ports are arranged in a uniaxial direction to form a coating
- the reaction gas in the form of plasma is supplied from the entire surface of the nozzle body only to the area where the TFT is to be formed. In this case, a film may be formed.
- the resist composition is selectively discharged by the droplet discharge means 11 1 and the heating means 1 12 in which a plurality of discharge ports of the composition are arranged in a uniaxial direction to form a channel protective film. Is formed.
- a conductive composition containing fine metal particles having a particle size of about 1 m is selectively dropped to directly form source and drain wiring patterns. Thereafter, heating is performed using heating means 117 in order to volatilize the solvent of the composition and harden the wiring pattern.
- the n-type non-single-crystal silicon film and the non-single-crystal silicon film located underneath are etched.
- Etching is performed by irradiating a plasma gasified fluoride gas from the nozzle body 118.
- the amount of the reactive gas to be blown is different between the vicinity of the wiring forming region and the other region, and a large amount of the reactive gas is sprayed in the region where the non-single-crystal silicon film is exposed.
- the etching can be balanced, and the consumption of the reactive gas can be suppressed.
- a contact hole is formed without a mask by jetting a reactive gas which is selectively turned into plasma into a place where a contact hole is to be formed by using a nozzle body 120.
- a transparent electrode is formed using the droplet discharging means 122 and the heating means 122.
- the composition is formed by directly forming a composition containing powder of conductive particles on a substrate in a predetermined pattern using a droplet discharging means. In this step, a pixel electrode can be formed.
- the subsequent steps which are necessary for manufacturing a liquid crystal display device, form an alignment film by the droplet discharging means 123 and perform a rubbing treatment by the rubbing means 124.
- the sealing material is drawn by the droplet discharging means 1 26 and the spacer is sprayed by the spraying means 127, and then the liquid crystal is discharged by the liquid crystal discharging means 128 to the flexible long substrate 110.
- the substrate is supplied from the other unwinding port 12 9 to the opposing side and is adhered.
- the two substrates are fixed by curing the sealing material by the curing means 130.
- the liquid crystal panel 13 2 can be manufactured by appropriately cutting out the panel size by the dividing means 13 1.
- a television receiver, a computer, a video playback device, and other electronic devices illustrated in FIG. 16 can be completed.
- FIG. 16A shows an example of completing a television receiver by applying the present invention.
- Case 200, support base 200, display unit 2003, part of speakers 2004, video It is composed of input terminals 205 and the like.
- a television receiver having a screen size of 30 inches or more can be manufactured at low cost.
- a television receiver can be completed. This is characterized by the fact that the specific gravity is smaller and thinner than glass as a substrate. This is an effect of using the flexible substrate.
- FIG. 16B shows an example in which a notebook personal computer is completed by applying the present invention.
- a main body 2201, a housing 2202, a display section 2203, and a keyboard 220 are shown. 4. External connection port 222, pointing mouse 2206, etc.
- a personal combination device having a display portion 222 of a 15 to 17 type class can be manufactured at low cost.
- Fig. 16C shows an example in which a video playback device is completed by applying the present invention.
- Main body 2401, housing 2402, display unit A2403, display unit B2404 It comprises a recording medium reading section 2405, operation keys 2406, a speaker part 2407, and the like.
- the present invention it is possible to manufacture an image reproducing apparatus which has a display section A2403 of a 15- to 17-type class and is light in weight, at a low cost.
- a composition in which metal fine particles having an average particle diameter of l to 50 nm, preferably 3 to 7 nm, are dispersed in an organic solvent.
- metal fine particles having an average particle diameter of l to 50 nm, preferably 3 to 7 nm
- they are silver or gold fine particles, the surface of which is coated with a dispersant such as amine, alcohol, or thiol.
- the organic solvent is a phenolic resin, an epoxy resin, or the like, and a thermosetting or photocuring one is used.
- the viscosity of the composition may be adjusted by adding a thixotropic agent or a diluting solvent.
- the organic solvent is cured by a heat treatment or a light irradiation treatment of the composition discharged in an appropriate amount onto the surface to be formed by the droplet discharge means.
- Organic solvent The metal fine particles come into contact due to the volume shrinkage caused by the hardening of the particles, and the fusion, fusion or aggregation is promoted. That is, a wiring in which metal fine particles having an average particle diameter of 1 to 50 nm, preferably 3 to 7 nm are fused, fused or aggregated is formed. As described above, by forming a state in which the metal fine particles are in surface contact with each other by fusion, fusion, or aggregation, it is possible to reduce the resistance of the wiring.
- forming a conductive pattern using such a composition also facilitates formation of a wiring pattern having a line width of about 1 to 10 m. Similarly, even if the diameter of the contact hole is about 1 to 10 m, the composition can be filled therein. That is, a multilayer wiring structure can be formed with a fine wiring pattern.
- an insulating pattern can be similarly formed.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Thin Film Transistor (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Electrodes Of Semiconductors (AREA)
- Drying Of Semiconductors (AREA)
Abstract
Description
Claims
Priority Applications (2)
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JP2004564063A JP4549866B2 (ja) | 2003-02-05 | 2004-01-30 | 表示装置の製造方法 |
EP04706812A EP1592049A1 (en) | 2003-02-05 | 2004-01-30 | Process for manufacturing display |
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JP2003028924 | 2003-02-05 | ||
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US (2) | US7176069B2 (ja) |
EP (1) | EP1592049A1 (ja) |
JP (2) | JP4549866B2 (ja) |
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WO (1) | WO2004070810A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
US20040224433A1 (en) | 2004-11-11 |
JPWO2004070810A1 (ja) | 2006-05-25 |
CN1745462A (zh) | 2006-03-08 |
JP4549866B2 (ja) | 2010-09-22 |
CN100459060C (zh) | 2009-02-04 |
JP5106573B2 (ja) | 2012-12-26 |
EP1592049A1 (en) | 2005-11-02 |
US20070172972A1 (en) | 2007-07-26 |
JP2010250327A (ja) | 2010-11-04 |
US7176069B2 (en) | 2007-02-13 |
US7736955B2 (en) | 2010-06-15 |
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