Patents by Inventor Taik Min Lee

Taik Min Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10857779
    Abstract: A stereoscopic pattern apparatus includes a base roller and a retrieving roller, a fine pattern hardening roller, an ink inserting roller and a convex pattern hardening roller. The base roller and the retrieving roller respectively provide and retrieve a base film. The fine pattern hardening roller is disposed between the base and retrieving rollers, and forms a lower hardening layer on the base film. A fine pattern is formed on the lower hardening layer. The ink inserting roller is disposed between the fine pattern hardening roller and the retrieving roller, and inserts an ink into the fine pattern. The convex pattern hardening roller is disposed between the ink inserting roller and the retrieving roller, and forms an upper hardening layer on the lower hardening layer. A convex lens is uniformly formed on the upper hardening layer.
    Type: Grant
    Filed: May 29, 2017
    Date of Patent: December 8, 2020
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Sin Kwon, Dong-ha Song, Kye-hee Woo, Yun-seok Jang, Seung-hyun Lee, Taik-min Lee
  • Patent number: 10632739
    Abstract: A roller module includes a roller, a magnetic bearing, a permanent magnet, at least one pair of magnetic coring, and a plurality of gap sensors. The roller has a protrusion and has a cylindrical shape. The protrusion is formed at both outer surfaces of the roller with a stepped portion and has the cylindrical shape. The magnetic bearing is formed at the roller. The permanent magnet is formed at the roller. At least one pair of magnetic coring covers an outer circumference of the protrusion. The gap sensors are formed along an axial direction and a radial direction of the roller.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: April 28, 2020
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Cheol-Hoon Park, Taik-Min Lee, Dong-Woo Kang
  • Patent number: 10414151
    Abstract: Provided is a printing apparatus including: a printing roller whose outer circumferential surface is coated with ink; a cliché roller which rotates in engagement with the printing roller and forms first patterns on the printing roller by removing portions of the ink coated on the outer circumferential surface of the printing roller and on which second patterns which are the removed portions of the ink are formed; a first transfer substrate onto which the first patterns of the printing roller are transferred; and a second transfer substrate onto which the second patterns of the cliché roller are transferred. The printing apparatus can reduce the time required for a product production process by omitting a cliché cleaning process.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: September 17, 2019
    Assignee: Changwon National University Industry Academy Cooperation Corps
    Inventors: Young Tae Cho, Sin Kwon, Taik Min Lee
  • Publication number: 20180304611
    Abstract: A stereoscopic pattern apparatus includes a base roller and a retrieving roller, a fine pattern hardening roller, an ink inserting roller and a convex pattern hardening roller. The base roller and the retrieving roller respectively provide and retrieve a base film. The fine pattern hardening roller is disposed between the base and retrieving rollers, and forms a lower hardening layer on the base film. A fine pattern is formed on the lower hardening layer. The ink inserting roller is disposed between the fine pattern hardening roller and the retrieving roller, and inserts an ink into the fine pattern. The convex pattern hardening roller is disposed between the ink inserting roller and the retrieving roller, and forms an upper hardening layer on the lower hardening layer. A convex lens is uniformly formed on the upper hardening layer.
    Type: Application
    Filed: May 29, 2017
    Publication date: October 25, 2018
    Inventors: Sin KWON, Dong-ha SONG, Kye-hee WOO, Yun-seok JANG, Seung-hyun LEE, Taik-min LEE
  • Publication number: 20180050533
    Abstract: A roller module includes a roller, a magnetic bearing, a permanent magnet, at least one pair of magnetic coring, and a plurality of gap sensors. The roller has a protrusion and has a cylindrical shape. The protrusion is formed at both outer surfaces of the roller with a stepped portion and has the cylindrical shape. The magnetic bearing is formed at the roller. The permanent magnet is formed at the roller. At least one pair of magnetic coring covers an outer circumference of the protrusion. The gap sensors are formed along an axial direction and a radial direction of the roller.
    Type: Application
    Filed: April 7, 2016
    Publication date: February 22, 2018
    Applicant: KOREA INSTITUTE OF MACINERY & MATERIALS
    Inventors: Cheol-Hoon PARK, Taik-Min LEE, Dong-Woo KANG
  • Publication number: 20170305143
    Abstract: Provided is a printing apparatus including: a printing roller whose outer circumferential surface is coated with ink; a cliché roller which rotates in engagement with the printing roller and forms first patterns on the printing roller by removing portions of the ink coated on the outer circumferential surface of the printing roller and on which second patterns which are the removed portions of the ink are formed; a first transfer substrate onto which the first patterns of the printing roller are transferred; and a second transfer substrate onto which the second patterns of the cliché roller are transferred. The printing apparatus can reduce the time required for a product production process by omitting a cliché cleaning process.
    Type: Application
    Filed: April 21, 2017
    Publication date: October 26, 2017
    Applicants: CHANGWON NATIONAL UNIVERSITY Industry Academy Cooperation Corps, Korea Institute of Machinery & Materials
    Inventors: Young Tae CHO, Sin Kwon, Taik Min Lee
  • Patent number: 9784756
    Abstract: A method of measuring feeding velocity of a web, on which a scale having pitches different from pitches of a mask are formed, is provided. The method includes: calculating a number of vibrations of a moiré image of light passing through the mask and the scale; calculating pitches of the scale of the fed web based on the calculated number of vibrations of the moiré image; averaging the pitches of the scale so that a change in a pitch between adjacent timings among the calculated pitches of the scale is minimized; extracting first signals corresponding to our phases for one pitch based on the averaged pitches of the scale; calculating two second signals for forming a Lissajous circle from the first signals; and calculating an angle of the Lissajous circle by the two second signals and then calculating the feeding velocity of the web by using the calculated angle.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: October 10, 2017
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Dongwoo Kang, Taik Min Lee, Seung-Hyun Lee, Young Man Choi, Deokkyun Yoon, Kwang-Young Kim, Jeongdai Jo
  • Patent number: 9421753
    Abstract: A printing apparatus for measuring and compensating for a synchronization error is provided.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: August 23, 2016
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Dong Woo Kang, Taik Min Lee, In Young Kim, Young Man Choi, Seung-Hyun Lee, Deok Kyun Yoon
  • Patent number: 9180483
    Abstract: Provided is an integrated coating system. An integrated coating system according to an exemplary embodiment of the present invention includes: a unwinding means provided with a roll to supply a web; a worktable roll configured to support the web supplied from the unwinding means; a plurality of printing means configured to perform printing or coating on the web supplied from the unwinding means; a plurality of curing means each of which is modulated to cure a printing material on the web passing through at least one printing means; and a winding means around which the web, of which printing or coating work is completed by passing through the curing means, is wound in a roll shape.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: November 10, 2015
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: In Young Kim, Taik Min Lee, Seung-Hyun Lee, Dong Woo Kang, Kwang-Young Kim, Young Man Choi
  • Patent number: 9182858
    Abstract: The present invention relates to a method for burying a conductive mesh in a transparent electrode, and more particularly, to a method which prevents a conductive mesh from protruding from a transparent electrode by burying the conductive mesh in the transparent electrode.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: November 10, 2015
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Taik Min Lee, In Young Kim, Jeong Dai Jo, Dong-Soo Kim
  • Patent number: 9085132
    Abstract: Disclosed are a reverse gravure offset printing method and apparatus using a disposable cliche, which do not require cleaning of the cliche and do not require a large quantity of high-definition cliches because the cliche used in reverse gravure offset printing can be discarded after used once or several times and replaced with a new one, thereby achieving cost reduction.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: July 21, 2015
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: In Young Kim, Taik Min Lee, Jeong Dai Jo, Dong-Soo Kim
  • Patent number: 8997649
    Abstract: The present invention relates to a cliché, and it particularly relates to a cliché with a partition formed thereon for controlling a blanket and the partition to be parallel with each other by the partition when a partition is protrusively formed on the cliché and the blanket is not combined with the cliché according to a predetermined method, controlling functional ink disposed between the blanket and the cliché to be transferred while not spreading so that it may be transferred to a substrate in a shape to be patterned when the blanket does not contact the cliché, and an electronic printing device and method using the same.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: April 7, 2015
    Assignee: Korea Institute of Machinery & Materials
    Inventors: Taik Min Lee, In Young Kim, Jeong Dai Jo, Byung-Oh Choi
  • Publication number: 20140333919
    Abstract: The present invention relates to a method of measuring web feeding velocity by using an encoder. A method of measuring feeding velocity of a web, on which a scale having a different pitch from a pitch of a mask is formed, includes: calculating a number of vibrations of a moiré image of light passing through the mask and the scale; calculating scale pitches of the fed web based on the calculated number of vibrations of the moiré image; averaging the pitches so that a change in a pitch between adjacent timings among the calculated scale pitches is minimized; extracting first signals corresponding to a plurality of phases for one pitch based on the averaged pitch; calculating second signals for forming a Lissajous circle from the signal corresponding to the plurality of phases; and calculating an angle of the Lissajous circle by the second signals for forming the Lissajous circle and then calculating the feeding velocity of the web by using the calculated angle.
    Type: Application
    Filed: May 9, 2014
    Publication date: November 13, 2014
    Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Dongwoo KANG, Taik Min Lee, Seung-Hyun Lee, Young Man Choi, Deokkyun Yoon, Kwang-Young Kim, Jeongdai Jo
  • Patent number: 8820239
    Abstract: The present invention relates to a reverse offset printing method, and more particularly, to a reverse offset printing method in a partial off type capable of accurately transferring a pattern to a cliche to achieve more precise minute printing by separately performing removal for each shear region of a functional ink even though the pattern is minute.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: September 2, 2014
    Assignee: Korea Institute of Machinery & Materials
    Inventors: Taik Min Lee, In Young Kim, Dong Woo Kang
  • Publication number: 20140196619
    Abstract: The present invention relates to a printing apparatus and method for measuring and compensating for a synchronization error and the present invention has been made in an effort to provide a printing apparatus and method for measuring and compensating for a synchronization error, which may compensate for the synchronization error between a roll and a substrate support part occurring due to a deformation, and the like which is caused by a printing pressure of the roll at the time of electronic printing.
    Type: Application
    Filed: October 31, 2013
    Publication date: July 17, 2014
    Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Dong Woo KANG, Taik Min Lee, In Young Kim, Young Man Choi, Seung-Hyun Lee, Deok Kyun Yoon
  • Patent number: 8724177
    Abstract: A printing apparatus having an automatic printing sheet feeder integrated thereto to improve mass productivity. The printing apparatus includes a base, a moving stage, an automatic printing sheet feeder, and a printing roll. The moving stage is linearly movable along the base, and has a lithographic plate seated on the top surface thereof, the lithographic plate having a printing pattern thereon. The automatic printing sheet feeder is installed on the moving stage. The automatic printing sheet feeder includes an unwinding roll, which supplies the printing sheet, a rewinding roll, which collects the printing sheet, and a plurality of guide rolls, which guide the printing sheet to pass through the printing area of the moving stage. The printing roll is installed on the base, and performs printing by transferring ink from recesses of a printing pattern of the lithographic plate to the printing sheet on the moving stage.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: May 13, 2014
    Assignee: Korea Institute of Machinery & Materials
    Inventors: Taik Min Lee, Jeongdai Jo, Dong Soo Kim, Byung Oh Choi, Chung Hwan Kim, Dong Youn Shin
  • Patent number: 8689687
    Abstract: The present invention discloses an apparatus for manufacturing electronic devices using a roll-to-roll rotary pressing process, comprising a winding roll around which flexible printing paper is wound; a plurality of printing units arranged in a straight line; at least one coating unit; a rewinding roll to rewind the printing paper when printing has been completed; a plurality of guide rolls arranged between the winding roll and the rewinding roll, thus guiding the printing paper; a plurality of drying units, each drying unit being provided on a printing paper-path between the printing unit and the adjacent guide roll to dry ink transferred to the printing paper or on a printing paper-path between the coating unit and the adjacent guide roll to dry the printing paper on which coating agent is supplied; and tension regulating units installed around the winding roll and the rewinding roll, respectively, for regulating tension of the printing paper.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: April 8, 2014
    Assignee: Korea Institute of Machinery & Materials
    Inventors: Byung-Oh Choi, Byung-Soon Ryu, Kyu-Jin Lim, Kwang-Young Kim, Dong-Soo Kim, So-Nam Yun, Young-Bog Ham, Taik-Min Lee, Jeong-Dai Jo, Hyun-Eui Lim, Chan-Su Yoo
  • Publication number: 20140076233
    Abstract: Provided is an integrated coating system. An integrated coating system according to an exemplary embodiment of the present invention includes: a unwinding means provided with a roll to supply a web; a worktable roll configured to support the web supplied from the unwinding means; a plurality of printing means configured to perform printing or coating on the web supplied from the unwinding means; a plurality of curing means each of which is modulated to cure a printing material on the web passing through at least one printing means; and a winding means around which the web, of which printing or coating work is completed by passing through the curing means, is wound in a roll shape.
    Type: Application
    Filed: August 27, 2013
    Publication date: March 20, 2014
    Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: In Young KIM, Taik Min Lee, Seung-Hyun Lee, Dong Woo Kang, Kwang-Young Kim, Young Man Choi
  • Publication number: 20140017404
    Abstract: The present invention relates to a device for patterning a substrate, and it particularly relates to a pattern printing device for performing a patterning operation by a simple process and requiring no cleansing of a plate by patterning a functional ink on the substrate by using a pattern roller on which a printing pattern is formed when the functional ink is coated is applied to a base of a PDMS material.
    Type: Application
    Filed: April 4, 2012
    Publication date: January 16, 2014
    Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Taik Min Lee, In Young Kim, Seung-Hyun Lee, Jeong Dai Jo, Dong-Soo Kim
  • Patent number: 8567822
    Abstract: The present invention relates to a luminous advertisement sheet. The luminous advertisement sheet includes a light-transmitting print sheet having an EL advertisement region formed in at least one area of the print sheet, and a general advertisement region formed in the other area thereof. The EL advertisement region has at least one of a fixed pattern portion in which a transparent electrode layer, an EL layer and a dielectric layer are sequentially laminated and a variable pattern portion in which a transparent electrode layer, an EL layer, a dielectric layer and a plurality of pixel electrode layers are sequentially laminated. The general advertisement region allows general dye printing to be performed therein. The luminous advertisement sheet further includes a pattern electrode layer laminated and printed with a conductive ink material to have a predetermined luminous pattern in at least one area of the dielectric layer laminated in the fixed pattern portion and/or the variable pattern portion.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: October 29, 2013
    Assignee: Korea Institute of Machinery & Materials
    Inventors: Taik-Min Lee, Dong-Youn Shin, Chung-Hwan Kim, Jeong-Dai Jo, Dong-Soo Kim, Byung-Oh Choi