Patent application number | Description | Published |
20090003973 | Wafer transfer robot - A wafer transfer robot, having a robot hand which transfers a wafer in an improved driving manner by changing a driving force transfer device of the robot hand, is disclosed. The wafer transfer robot having at least robot hand to transfer a wafer includes an arm frame supported on an elevating shaft to vertically move the robot hand, wherein the robot hand includes a first robot arm rotatably supported on the arm frame, a second robot arm rotatably supported at an end of the first robot arm, a first driving device which rotates the first robot arm to rotate the robot hand, a second driving device which rotates the second robot arm to extend and contract the robot hand in a radial direction with the first driving device, and a controller which operates the first driving device and stops the second driving device when the robot hand is rotated, and operates both the first driving device and the second driving device at the same time when the robot hand is extended and contracted in a radial direction. The wafer transfer robot can be rotated and linearly move in a radial direction by providing the first driving device and the second driving device on the robot hand, thereby greatly decreasing the capacity of the motor serving as a driving device and reducing the cost. | 01-01-2009 |
20110148132 | Industrial gripper with multiple degrees of freedom - An industrial gripper includes a base plate, at least three finger units to be moved relative to the base plate, a supporting unit to support the finger units, a first drive unit coupled to the supporting unit to allow simultaneous angular displacement of the finger units toward an object, and a second drive unit coupled to the supporting unit to adjust orientation angles between the finger units. Each of the finger units includes an intermediation member to be moved in a first direction by the first drive unit, a grip member to grip the object by being moved in a second direction different from the first direction as a movement direction of the intermediation member, and a connection member to convert the first direction movement of the intermediation member into the second direction movement of the grip member. | 06-23-2011 |
20130099815 | PROBE CARD HANDLING CARRIAGE - A probe card handling carriage is applicable to various working environments. The probe card handling carriage includes a main body provided to be travelable on the ground, a drawer unit provided to be movable in a forward and backward direction with respect to the main body, and a transfer robot installed on the drawer unit to transfer a probe card. | 04-25-2013 |
Patent application number | Description | Published |
20130077265 | PRINTED CIRCUIT BOARD ASSEMBLY - A printed circuit board assembly capable of having an electronic component mounted at a wafer level by using a wafer itself as a printed circuit board, the printed circuit board assembly including a plurality of electronic components, a printed circuit board having the plurality of electronic components mounted thereon, a protection body configured to entirely cover the printed circuit board, and a connection unit having one end that is exposed to an outside of the protection body for the printed circuit board to be electrically connected to a sub board, wherein the printed circuit board comprises a wafer printed circuit board formed with a wafer. | 03-28-2013 |
20130213247 | STENCIL APPARATUS FOR PRINTING SOLDER PASTE - A solder paste printing stencil apparatus for printing a solder paste on a printed circuit board includes a plate-shaped stencil mask made of fine stainless steel grains to suppress a phenomenon in which the solder paste adheres to the stencil mask. | 08-22-2013 |
20150245543 | FASTENING STRUCTURE FOR SHIELD CAN - A fastening structure for a shield can is capable of ensuring easy attachment/detachment of the shield can and prevents deformation caused by excessive impact when the shield can is attached and detached by improving the fastening structure for a shield can fixed to a printed circuit board. The fastening structure for a shield can provided to shield a printed circuit board on which electronic components are mounted and the electronic components from electromagnetic waves includes a frame provided with a fixing part allowing the frame to be fixed to the printed circuit board, a shield cover provided to surround an outer side of the frame, fastening parts provided at the shield cover and the frame, respectively, such that the shield cover and the frame are attached/detached to/from each other. The fastening parts and the fixing part are disposed without overlapping each other. | 08-27-2015 |
20160044835 | PRINTED CIRCUIT BOARD ASSEMBLY AND METHOD OF MANUFACTURING THE SAME - A printed circuit board (PCB) assembly includes a PCB, electronic components mounted on the PCB, a shield can provided to block electromagnetic waves of the electronic components, and an insulating layer provided to prevent an electrical short between the electronic components and the shield can, and the insulating layer is sprayed and formed on the shield can. The insulating layer which is sprayed and formed on the shield can does not have an adhesive layer, and thus the thickness thereof can be remarkably reduced compared to insulating materials requiring an adhesive layer. | 02-11-2016 |
Patent application number | Description | Published |
20090130226 | METHOD OF PRODUCING BIOMATERIALS AND BIOMATERIALS PRODUCED BY THE SAME - A biomaterial producing method and a biomaterial produced by the same are disclosed. The method includes preparing an electrolyte by dissolving monobasic potassium phosphate (KH | 05-21-2009 |
20110158268 | MODE-LOCKER COMPRISING A GRAPHENE, AND PULSE LASER DEVICE COMPRISING THE SAME - The present invention relates to a mode-locker including a graphene and a laser pulse device. The mode-locker mode-locks a laser that propagates through a laser oscillation loop. The mode-locker includes: i) a core; ii) cladding that surrounds the core, wherein a groove is formed on a side of the cladding; and iii) a graphene layer that is located in the groove and is formed to be extended along a direction to be parallel to a transferring direction of the laser such that a laser pulse is formed by the interaction of the graphene and the field of the propagating laser mode. | 06-30-2011 |
20120251736 | CONDUCTIVE INK COMPOSITION, METHOD FOR MANUFACTURING THE SAME, AND METHOD FOR MANUFACTURING CONDUCTIVE THIN LAYER USING THE SAME - Disclosed is a conductive ink composition, a manufacturing method thereof, and a manufacturing method of a conductive thin film using the same, and more specifically, a conductive ink composition is provided that includes composite metal nanoparticles including first metal nanoparticles and second metal nanoparticles, and a polymer matrix. The polymer matrix is a composition including a polymer and a solvent, the first metal nanoparticles and the second metal nanoparticles are different metals, and the content of the composite metal nanoparticles is about 20 to about 25 wt %, the content of the polymer is about 5 to about 10 wt %, and the content of the solvent is about 65 to about 75 wt %, based on the total weight of the composition. | 10-04-2012 |
20120329209 | METHOD FOR FORMING PATTERN OF METAL OXIDE AND METHOD FOR MANUFACTURING THIN FILM TRANSISTOR USING THE SAME - Disclosed are a method for forming a metal oxide pattern and a method of manufacturing a thin film transistor using the patterned metal oxide. The method for forming a metal oxide pattern includes: preparing an ink composition including at least one metal oxide precursor or metal oxide nanoparticle, and a solvent; ejecting the ink composition on a substrate to form a pattern on the substrate; and photosintering the formed pattern. Herein, the metal oxide precursor is ionic. | 12-27-2012 |
20130025671 | METHOD FOR MANUFACTURING LIGHT-ABSORPTION LAYER FOR SOLAR CELL, METHOD FOR MANUFACTURING THIN FILM SOLAR CELL USING THE SAME, AND THIN FILM SOLAR CELL USING THE SAME - Disclosed are a method of manufacturing a light-absorption layer for a solar cell, a method manufacturing a thin film solar cell using the same, and a thin film solar cell fabricated using the same. The method of manufacturing a light-absorption layer for a solar cell includes: preparing an ink composition including at least one metal precursor including at least one chalcogen element and a solvent; applying the ink composition as a precursor phase on a substrate using a solution process; and photo-sintering the ink composition applied on the substrate as a precursor phase. | 01-31-2013 |
20150098891 | METHOD FOR MANUFACTURING GRAPHENE FILM, GRAPHENE FILM MANUFACTURED BY SAME, ELECTRONIC DEVICE COMPRISING THE GRAPHENE FILM - A method for manufacturing graphene is provided, comprising (1) introducing a supporting substrate in a reactor; (2) preparing (nano) crystalline alumina catalyst having catalytic activity on the supporting substrate to prepare an insulating substrate; (3) growing nano graphenes on the insulating substrate to manufacture graphene film comprising graphene layer of the nano graphenes, which are grown without use of metal catalyst substantially. The graphene layer composed of the nano graphene has spatially homogeneous structural and electrical properties even in synthesis as large area and can be applied to flexible electronic devices. | 04-09-2015 |
20150201837 | NON-INVASIVE HEALTH INDICATOR MONITORING SYSTEM AND USING METHOD THEREOF - The present invention relates to a non-invasive health indicator monitoring system including a sensing module, an electric power storage module, and a circuit module to collect health indicator information by contacting with a subject. In addition, the present invention also relates to a method for monitoring health indicator continuously by using the health indicator monitoring system. | 07-23-2015 |
Patent application number | Description | Published |
20090137248 | METHOD OF EXECUTING SCANNING IN BROADBAND WIRELESS ACCESS SYSTEM - The primitives between an upper management layer and the MAC layer within a mobile station and a base station are defined in order to specify and clarify the operations within the protocol stack layers in a broadband wireless access system to allow a mobile station to perform scanning procedures. Media Independent Handover (MIH) procedures can be achieved because the NCMS and MIH layer can communicate through use of these primitives. | 05-28-2009 |
20090196228 | METHOD OF CONNECTING TO NETWORK IN BROADBAND WIRELESS ACCESS SYSTEM - The primitives between an upper management layer and the MAC layer within a mobile station and a base station are defined in order to specify and clarify the operations within the protocol stack layers in a broadband wireless access system to allow a mobile station to perform a method of connecting to the network. Media Independent Handover (MIH) procedures can be achieved because the NCMS and MIH layer can communicate through use of these primitives. | 08-06-2009 |
20090201882 | METHOD OF EXECUTING SCANNING IN BROADBAND WIRELESS ACCESS SYSTEM - The primitives between an upper management layer and the MAC layer within a mobile station and a base station are defined in order to specify and clarify the operations within the protocol stack layers in a broadband wireless access system to allow a mobile station to perform scanning procedures. Media Independent Handover (MIH) procedures can be achieved because the NCMS and MIH layer can communicate through use of these primitives. | 08-13-2009 |
20100048213 | METHOD OF SUPPORTING HANDOVER IN A MULTI-MODE MOBILE STATION - A method of discovering at least one of a homogeneous and a heterogeneous network module to perform handover with in a wireless mobile communication network is disclosed. More specifically, the method includes establishing a network handover module for converging information from at least one network interface module associated with at least one of a homogeneous and a heterogeneous network handover module into a unified presentation and transmitting a broadcast request message from a mobile station (MS) to a source point of attachment (PoA) which transmits the broadcast request message to at least one interface module to identify whether the at least one interface module supports at least one of the homogeneous and the heterogeneous network handover module and a capability of the at least one of the homogeneous and the heterogeneous network handover module. The method further includes initiating a timer for a specified time period when the broadcast request message is transmitted and receiving at least one response message from the at least one interface module via the source PoA prior to expiration of the timer, wherein the response message indicates that the at least one interface module supports at least one of the homogeneous and the heterogeneous network handover module and the capability of the at least one of the homogeneous and the heterogeneous network handover module. | 02-25-2010 |
20100261475 | METHOD OF INITIALIZING AND ESTABLISHING LINKS IN A MULTI-MODE MOBILE TERMINAL - A method of performing a handover with at least one of a homogeneous and heterogeneous network is disclosed. More specifically, the method comprises establishing a heterogeneous network handover module for converging information from the at least one network interface module associated with the at least one of a homogeneous and heterogeneous network into a unified presentation and receiving a message for powering on at least one network interface module in a mobile terminal from the heterogeneous network handover module. The method further comprises performing a power on operation for activating the at least one network interface module and transmitting a confirmation message for indicating a power on operation status to the heterogeneous network handover module. | 10-14-2010 |
20110134886 | METHOD OF EXECUTING HANDOVER IN BROADBAND WIRELESS ACCESS SYSTEM - The primitives between an upper management layer and the MAC layer within a mobile station and a base station are defined in order to specify and clarify the operations within the protocol stack layers in a broadband wireless access system to allow a mobile station to execute handover. Media Independent Handover (MIH) procedures can be achieved because the NCMS and MIH layer can communicate through use of these primitives. | 06-09-2011 |
Patent application number | Description | Published |
20090027700 | METHOD AND APPARATUS TO PRINT E-MAIL ACCORDING TO PRINTING ENVIRONMENT SETTINGS CORRESPONDING TO EACH USER - A method and apparatus to print an e-mail according to printing environment settings corresponding to each user includes receiving a user profile stored in the outside, setting an e-mail printing environment by using the received user profile, and printing an e-mail received from an e-mail server according to the set e-mail printing environment. By doing so, users can print an e-mail according to a printing environment desired by a user in an image forming apparatus such as a Multi Function Printer (MFP), a printer, or the like which supports printing of an e-mail. | 01-29-2009 |
20130107316 | IMAGE FORMING APPARATUS SUPPORTING PLURALITY OF NETWORK INTERFACES AND METHOD OF EDITING ROUTING TABLE THEREOF | 05-02-2013 |
20130110995 | IMAGE FORMING SYSTEM INCLUDING IMAGE FORMING APPARATUS SUPPORTING PLURALITY OF NETWORK INTERFACES AND METHOD OF EDITING ROUTING TABLE THEREOF | 05-02-2013 |
20140089426 | METHOD AND APPARATUS OF ISSUING EMAIL ACCOUNT - A method and apparatus for issuing an email account to a client device by a network device including an email server. The method includes: receiving an email from the client device via a first email account, which is registered in the email server before the email account of the client device is issued; reading information necessary for issuance of a new email account from the read email; and registering a second email account, which is to be issued to the client device, in the email server based on the read information. | 03-27-2014 |
20140285835 | METHOD AND APPARATUS TO PRINT E-MAIL ACCORDING TO PRINTING ENVIRONMENT SETTINGS CORRESPONDING TO EACH USER - A method and apparatus to print an e-mail according to printing environment settings corresponding to each user includes receiving a user profile stored in the outside, setting an e-mail printing environment by using the received user profile, and printing an e-mail received from an e-mail server according to the set e-mail printing environment. By doing so, users can print an e-mail according to a printing environment desired by a user in an image forming apparatus such as a Multi Function Printer (MFP), a printer, or the like which supports printing of an e-mail. | 09-25-2014 |
Patent application number | Description | Published |
20090107626 | ADHESION IMPROVEMENT OF DIELECTRIC BARRIER TO COPPER BY THE ADDITION OF THIN INTERFACE LAYER - Embodiments described herein provide a method of processing a substrate. The method includes depositing an interface adhesion layer between a conductive material and a dielectric material such that the interface adhesion layer provides increased adhesion between the conductive material and the dielectric material. In one embodiment a method for processing a substrate is provided. The method comprises depositing an interface adhesion layer on a substrate comprising a conductive material, exposing the interface adhesion layer to a nitrogen containing plasma, and depositing a dielectric layer on the interface adhesion layer after exposing the interface adhesion layer to the nitrogen containing plasma. | 04-30-2009 |
20110298099 | SILICON DIOXIDE LAYER DEPOSITED WITH BDEAS - A silicon dioxide layer is deposited onto a substrate using a process gas comprising BDEAS and an oxygen-containing gas such as ozone. The silicon dioxide layer can be part of an etch-resistant stack that includes a resist layer. In another version, the silicon dioxide layer is deposited into through holes to form an oxide liner for through-silicon vias. | 12-08-2011 |
20120097330 | DUAL DELIVERY CHAMBER DESIGN - A substrate processing system includes a thermal processor or a plasma generator adjacent to a processing chamber. A first processing gas enters the thermal processor or plasma generator. The first processing gas then flows directly through a showerhead into the processing chamber. A second processing gas flows through a second flow path through the showerhead. The first and second processing gases are mixed below the showerhead and a layer of material is deposited on a substrate under the showerhead. | 04-26-2012 |
20120196155 | RESIST FORTIFICATION FOR MAGNETIC MEDIA PATTERNING - A method and apparatus for forming magnetic media substrates is provided. A patterned resist layer is formed on a substrate having a magnetically susceptible layer. A conformal protective layer is formed over the patterned resist layer to prevent degradation of the pattern during subsequent processing. The substrate is subjected to an energy treatment wherein energetic species penetrate portions of the patterned resist and conformal protective layer according to the pattern formed in the patterned resist, impacting the magnetically susceptible layer and modifying a magnetic property thereof. The patterned resist and conformal protective layers are then removed, leaving a magnetic substrate having a pattern of magnetic properties with a topography that is substantially unchanged. | 08-02-2012 |
20120276301 | ADHESION IMPROVEMENT OF DIELECTRIC BARRIER TO COPPER BY THE ADDITION OF THIN INTERFACE LAYER - Embodiments described herein provide a method of processing a substrate. The method includes depositing an interface adhesion layer between a conductive material and a dielectric material such that the interface adhesion layer provides increased adhesion between the conductive material and the dielectric material. In one embodiment a method for processing a substrate is provided. The method comprises depositing an interface adhesion layer on a substrate comprising a conductive material, exposing the interface adhesion layer to a nitrogen containing plasma, and depositing a dielectric layer on the interface adhesion layer after exposing the interface adhesion layer to the nitrogen containing plasma. | 11-01-2012 |
20140147700 | RESIST FORTIFICATION FOR MAGNETIC MEDIA PATTERNING - A method and apparatus for forming magnetic media substrates is provided. A patterned resist layer is formed on a substrate having a magnetically susceptible layer. A conformal protective layer is formed over the patterned resist layer to prevent degradation of the pattern during subsequent processing. The substrate is subjected to an energy treatment wherein energetic species penetrate portions of the patterned resist and conformal protective layer according to the pattern formed in the patterned resist, impacting the magnetically susceptible layer and modifying a magnetic property thereof. The patterned resist and conformal protective layers are then removed, leaving a magnetic substrate having a pattern of magnetic properties with a topography that is substantially unchanged. | 05-29-2014 |
Patent application number | Description | Published |
20090129494 | APPARATUS AND METHOD FOR CANCELING DC OFFSET IN BROADBAND WIRELESS ACCESS COMMUNICATION SYSTEM - An apparatus and method for canceling a Direct Current (DC) offset in a Broadband Wireless Access (BWA) communication system are provided. The method includes canceling a DC offset by performing self-calibration in a modulator/demodulator (modem), attempting initial synchronization acquisition in the modem, and if the initial synchronization acquisition succeeds, canceling a DC offset by performing DC offset trace and cancellation. | 05-21-2009 |
20090141620 | APPARATUS AND METHOD FOR TIME-VARYING CYCLIC DELAY DIVERSITY IN A WIRELESS COMMUNICATION SYSTEM - An apparatus and method for Time-Varying Cyclic Delay Diversity (TV-CDD) in a wireless communication system are provided. The method includes, if there is a signal of an antenna path to be transmitted, determining if a current time corresponds to a preamble zone within a frame and, if the current time corresponds to the preamble zone within the frame, shifting a partial antenna path signal forward compared to a reference timing and shifting a remaining partial antenna path signal equally or backward compared to the reference timing. | 06-04-2009 |
20110090989 | APPARATUS AND METHOD FOR REMOVING DC OFFSET IN WIRELESS COMMUNICATION SYSTEM - An apparatus and method for removing a Direct Current (DC) offset at a receiving terminal in a wireless communication system are provided. In the method, a frame is divided into at least two time resource blocks. Resource allocation information is used to discriminate between at least one time resource block of a data-unmapped interval and at least one time resource block of a data-mapped interval. The DC offset is measured during the data-unmapped interval. The DC offset is compensated during the data-unmapped interval on a time resource block basis by using the measured DC offset. | 04-21-2011 |
20120230213 | APPARATUS AND METHOD FOR RECEIVING MULTIPLE FREQUENCY ALLOCATIONS (FAS) IN A MOBILE COMMUNICATION SYSTEM - An apparatus and a method for receiving a multiple frequency band are provided. In the method for receiving a multiple frequency band of a terminal is a mobile communication system, respective received signal strengths or respective gains are measured with respect to a signal received via at least one Radio Frequency (RF) chain. Whether multiple frequency band reception that uses a single RF chain is possible is determined using the respective received signal strengths or the respective gains. When the multiple frequency band reception that uses the single RF chain is possible, the multiple frequency band is received using the single RF chain. | 09-13-2012 |
Patent application number | Description | Published |
20110015874 | APPARATUS AND METHOD FOR DETECTING COMPONENTS OF MIXED GAS - The present invention provides an apparatus and method for detecting components of a mixed gas which increases the detection efficiency using a sensor array in which various types of nanomaterials such as carbon nanotubes (CNT), zinc oxide (ZnO), titanium dioxide (TiO | 01-20-2011 |
20120063058 | COMPOSITE ELECTRODE ACTIVE MATERIAL HAVING M1-xRuxO3 (M=Sr, Ba, Mg), SUPERCAPACITOR USING THE SAME AND FABRICATION METHOD THEREOF - Disclosed are a composite electrode active material and a supercapacitor using the same, and more particularly, an electrode active material having M | 03-15-2012 |
20120100303 | CARBON NANOFIBER INCLUDING COPPER PARTICLES, NANOPARTICLES, DISPERSED SOLUTION AND PREPARATION METHODS THEREOF - Disclosed are amorphous carbon nanofibers including copper nanoparticles or copper alloy nanoparticles, copper composite nanoparticles prepared by grinding the amorphous carbon nanofibers and implemented as surfaces of Cu-included particles are partially or wholly coated with amorphous carbons, a dispersed solution including the copper composite nanoparticles, and preparation methods thereof and the amorphous carbon nanofibers include nanoparticles including copper, copper nanoparticles or copper alloy nanoparticles, and, the copper composite nanoparticles are implemented as surfaces of Cu-included particles are partially or wholly coated with amorphous carbons. | 04-26-2012 |
20130215429 | APPARATUS FOR GAS SENSING BY USING FIBER FABRY-PEROT INTERFEROMETER - The present invention relates to an apparatus for gas sensing including: a header part to generate interference wave to light from light source by the principle of fiber fabry-perot interferometer; and an optical spectrum analyzer to decide existence of specific gas based on change of spectrum periodicity of the interference wave, wherein the header part includes a sensing material that expands or shrinks by the above specific gas and the above interference wave changes its spectrum periodicity depending on expansion and shrinkage of the above sensing material. | 08-22-2013 |
20130294975 | FIBER OPTIC APPARATUS FOR OXYGEN SENSING - An apparatus for oxygen sensing is provided. The apparatus for oxygen sensing includes: a header part to generate interference wave to light generated in a light source by the principle of fiber Fabry-Perot interferometer; and an optical spectrum analyzer to decide existence of oxygen based on change of spectrum periodicity of the above interference wave, in which the header part includes a sensing material of which effective refractive index changes by combination with the oxygen and the above interference wave changes its spectrum periodicity depending on change of effective refractive index of the above sensing material. | 11-07-2013 |
20140037863 | DEVICE AND METHOD FOR FORMING ROLL-TO-ROLL PATTERN - A device for forming a roll-to-roll pattern includes: a plurality of rollers, that are separated from each other, for transferring a substrate in one direction; a pattern former provided on the substrate between neighboring rollers from among the plurality of rollers, and forming a pattern on the substrate; an absorber facing the pattern former with the substrate therebetween, and absorbing the substrate; a light irradiator neighboring the pattern former and irradiating light to the pattern; and a controller for controlling the roller, the pattern former, the absorber, and the light irradiator so that the pattern may be formed on the substrate and light may be irradiated to the pattern. | 02-06-2014 |
20140061546 | NANOPARTICLES, METHOD OF MANUFACTURING NANOPARTICLES, AND ELECTRONIC DEVICE INCLUDING THE SAME - A method of manufacturing nanoparticles, nanoparticles, and an organic light emitting diode, a solar cell, a printing ink, a bioimaging device, and a sensor including the same are provided. | 03-06-2014 |
20140255776 | METHOD FOR MANUFACTURING ELECTRODE, ELECTRODE MANUFACTURED ACCORDING TO THE METHOD, SUPERCAPACITOR INCLUDING THE ELECTRODE, AND RECHARGABLE LITHIUM BATTERY INCLUDING THE ELECTRODE - Disclosed are a method for manufacturing an electrode including mixing at least two electrode materials selected from a carbon material, a metal oxide precursor, and a conductive polymer with a solvent to prepare a mixture, coating the mixture on a current collector, and radiating IPL (intense pulsed light) on the mixture coated on the current collector, the electrode manufactured according to the method, and a supercapacitor and rechargeable lithium battery including the electrode. | 09-11-2014 |
20140284718 | METHOD OF REDUCION GRAPHENE OXIDE AND REDUCED GRAPHENE OXIDE OBTAINED BY THE METHOD, AND THIN FILM TRANSISTOR INCLUDING THE REDUCED GRAPHENE OXIDE - Disclosed are a method of manufacturing a reduced graphene oxide pattern which includes forming a graphene oxide pattern on a substrate and providing the graphene oxide pattern with a white light pulse to reduce the graphene oxide, a reduced graphene oxide obtained by the method, and an electronic device and a thin film transistor including the reduced graphene oxide. | 09-25-2014 |
20150072482 | METHOD OF MANUFACTURING THIN FILM TRANSISTOR - A method of manufacturing a thin-film transistor is provided, including preparing ink including a solution in which a graphene oxide, a reduced graphene oxide, or a combination thereof is dispersed, forming the ink on a substrate in the form of a pattern, and forming a source electrode and a drain electrode that are positioned at edges of the pattern and a semiconductor channel positioned between the electrodes by a coffee-ring effect in the ink by using the graphene oxide, the reduced graphene oxide, or the combination thereof within the formed pattern. | 03-12-2015 |