Patents by Inventor Kyu Hwang Lee
Kyu Hwang 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).
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Patent number: 9820340Abstract: An organic light emitting display device includes a substrate having a display area and a non-display area, an organic light emitting element and a sealing layer sequentially stacked on one side of the substrate in the display area, a support layer on the one side of the substrate in the non-display area, and a polarizing plate on the support layer in the non-display area and on the sealing layer in the display area, the polarizing plate covering an entirety of the support layer.Type: GrantFiled: August 3, 2015Date of Patent: November 14, 2017Assignee: LG Display Co., Ltd.Inventors: Kyu Hwang Lee, Tae Joon Song, Jung Eun Lee, Kyung Ha Lee, Hwan Keon Lee
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Patent number: 9604308Abstract: Disclosed herein is a method of manufacturing two kinds of rectangular unit pieces having different optical properties from a base material sheet through cutting using a cutting frame including a cutter, the method including preparing a base material sheet having a large length to width ratio, the base material sheet exhibiting optical directivity in a longitudinal direction or in a lateral direction, preparing a cutting frame including at least on first cutter for cutting a first unit piece exhibiting optical directivity parallel to that of the base material sheet and at least one second cutter for cutting a second unit piece exhibiting optical directivity perpendicular to that of the base material sheet, the first cutter and the second cutter being arranged adjacent to each other in the lateral direction of the base material sheet, and sequentially cutting the base material sheet using the cutting frame in the longitudinal direction of the base material sheet to simultaneously manufacture the first unit pieType: GrantFiled: February 20, 2014Date of Patent: March 28, 2017Assignee: LG CHEM, LTD.Inventors: Ho Kyung Lee, Kyu Hwang Lee, Joo-Sang Kim
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Patent number: 9417618Abstract: A method of cutting one or more kinds of quadrangular unit pieces having a relatively small size from a quadrangular base material having a relatively large size uses a cutter frame including a plurality of cutters to manufacture the quadrangular unit pieces. The method includes (a) scanning a quadrangular base material in a longitudinal direction and in a lateral direction to check positions of defects on the quadrangular base material, (b) calculating a yield when cutting the quadrangular base material using two or more kinds of cutting frames, (c) selecting one of the cutting frames in which the yield calculated at the calculation step (b) is within a range of upper 30%, and (d) cutting the quadrangular base material using the cutting frame selected at the selection step (c) to manufacture quadrangular unit pieces.Type: GrantFiled: July 31, 2013Date of Patent: August 16, 2016Assignee: LG CHEM, LTD.Inventors: Hokyung Lee, Eungjin Jang, Kyu Hwang Lee, Yoomin Lee, Hoonyeol Kim
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Publication number: 20160165677Abstract: An organic light emitting display device includes a substrate having a display area and a non-display area, an organic light emitting element and a sealing layer sequentially stacked on one side of the substrate in the display area, a support layer on the one side of the substrate in the non-display area, and a polarizing plate on the support layer in the non-display area and on the sealing layer in the display area, the polarizing plate covering an entirety of the support layer.Type: ApplicationFiled: August 3, 2015Publication date: June 9, 2016Applicant: LG Display Co., Ltd.Inventors: Kyu Hwang LEE, Tae Joon SONG, Jung Eun LEE, Kyung Ha LEE, Hwan Keon LEE
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Patent number: 9327381Abstract: Disclosed herein is a device for cutting a glass sheet, continuously supplied after a melting and solidification process, into quadrangular glass substrates. The glass sheet cutting device includes two or more cutters for cutting a glass sheet into quadrangular glass substrates, a defect inspector for scanning the glass sheet to three-dimensionally check defect positions in a length direction, a width direction and a thickness direction of the glass sheet, a position adjuster for moving at least one of the cutters to a portion of the glass sheet at which few defects are distributed, and a controller for informing the position adjuster of positions of the cutters based on the scanned results received from the defect inspector.Type: GrantFiled: October 14, 2013Date of Patent: May 3, 2016Assignee: LG CHEM, LTD.Inventors: Ho Kyung Lee, Kyu Hwang Lee, Soon Ki Heo
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Publication number: 20150352663Abstract: Disclosed herein is a method of manufacturing two kinds of rectangular unit pieces having different optical properties from a base material sheet through cutting using a cutting frame including a cutter, the method including preparing a base material sheet having a large length to width ratio, the base material sheet exhibiting optical directivity in a longitudinal direction or in a lateral direction, preparing a cutting frame including at least on first cutter for cutting a first unit piece exhibiting optical directivity parallel to that of the base material sheet and at least one second cutter for cutting a second unit piece exhibiting optical directivity perpendicular to that of the base material sheet, the first cutter and the second cutter being arranged adjacent to each other in the lateral direction of the base material sheet, and sequentially cutting the base material sheet using the cutting frame in the longitudinal direction of the base material sheet to simultaneously manufacture the first unit pieType: ApplicationFiled: February 20, 2014Publication date: December 10, 2015Inventors: Ho Kyung LEE, Kyu Hwang LEE, Joo-Sang KIM
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Patent number: 9104191Abstract: Disclosed herein is a method of cutting one or more kinds of quadrangular unit pieces having a relatively small size from a quadrangular base material having a relatively large size using a cutter frame including a plurality of cutters to manufacture the quadrangular unit pieces, the method including (a) an inspection step of scanning a quadrangular base material in a longitudinal direction and in a lateral direction of the quadrangular base material to check positions of defects on the quadrangular base material, (b) a calculation step of calculating a yield when imaginarily cutting the quadrangular base material using two or more kinds of cutting frames, (c) a selection step of selecting one of the cutting frames in which the yield calculated at the calculation step (b) is within a range of upper 30%, and (d) a manufacturing step of cutting the quadrangular base material using the cutting frame selected at the selection step (c) to manufacture quadrangular unit pieces.Type: GrantFiled: March 10, 2010Date of Patent: August 11, 2015Assignee: LG CHEM, LTD.Inventors: Hokyung Lee, Eungjin Jang, Kyu Hwang Lee, Yoomin Lee, Hoonyeol Kim
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Patent number: 9064752Abstract: An array substrate includes: a trench having a depth from a surface of a substrate; a gate line, a gate electrode and a data pattern filling the respective trenches, wherein the data pattern is between the adjacent gate lines; a gate insulating layer on the gate line, the gate electrode and the data pattern, substantially flat over the substrate, and including contact holes that expose both ends of the data pattern, respectively; a data connection portion on the gate insulating layer and contacting the adjacent data patterns through the contact holes; a source electrode extending from the data connection portion, and a drain electrode spaced apart from the source electrode; a passivation layer on the source and drain electrodes and including a drain contact hole exposing the drain electrode; and a pixel electrode on the passivation layer and contacting the drain electrode through the drain contact hole.Type: GrantFiled: December 4, 2013Date of Patent: June 23, 2015Assignee: LG DISPLAY CO., LTD.Inventors: Tae-Hyoung Moon, Tae-Joon Song, Kyu-Hwang Lee, Kyung-Ha Lee
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Publication number: 20150001543Abstract: An array substrate includes: a trench having a depth from a surface of a substrate; a gate line, a gate electrode and a data pattern filling the respective trenches, wherein the data pattern is between the adjacent gate lines; a gate insulating layer on the gate line, the gate electrode and the data pattern, substantially flat over the substrate, and including contact holes that expose both ends of the data pattern, respectively; a data connection portion on the gate insulating layer and contacting the adjacent data patterns through the contact holes; a source electrode extending from the data connection portion, and a drain electrode spaced apart from the source electrode; a passivation layer on the source and drain electrodes and including a drain contact hole exposing the drain electrode; and a pixel electrode on the passivation layer and contacting the drain electrode through the drain contact hole.Type: ApplicationFiled: December 4, 2013Publication date: January 1, 2015Applicant: LG DISPLAY CO., LTD.Inventors: Tae-Hyoung MOON, Tae-Joon SONG, Kyu-Hwang LEE, Kyung-Ha LEE
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Patent number: 8890167Abstract: An array substrate for a display device and manufacturing method thereof is disclosed. The device comprises: a substrate; a gate line formed on the substrate along a first direction; a data line formed over the substrate along a second direction, wherein the data line and the gate line cross each other to define a pixel region; a thin film transistor formed in the pixel region, and having a gate electrode connected to the gate line, a source electrode connected to the data line, and a drain electrode; a pixel electrode formed in the pixel region and connected to the drain electrode; a first auxiliary gate pattern formed over the gate line and contacting the gate line; and a first auxiliary data pattern formed over the data line and contacting the data line.Type: GrantFiled: August 16, 2012Date of Patent: November 18, 2014Assignee: LG Display Co., Ltd.Inventors: Seung-Hee Nam, Soon-Sung Yoo, Tae-Hyoung Moon, Tae-Joon Song, Kyu-Hwang Lee
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Patent number: 8821211Abstract: Disclosed herein is a device for cutting a glass sheet, continuously supplied after a melting and solidification process, into quadrangular glass substrates. The glass sheet cutting device includes two or more cutters for cutting a glass sheet into quadrangular glass substrates, a defect inspector for scanning the glass sheet to three-dimensionally check defect positions in a length direction, a width direction and a thickness direction of the glass sheet, a position adjuster for moving at least one of the cutters to a portion of the glass sheet at which few defects are distributed, and a controller for informing the position adjuster of positions of the cutters based on the scanned results received from the defect inspector.Type: GrantFiled: April 20, 2011Date of Patent: September 2, 2014Assignee: LG Chem, Ltd.Inventors: Ho Kyung Lee, Kyu Hwang Lee, Soon Ki Heo
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Patent number: 8791459Abstract: An array substrate for a display device includes an insulation substrate, a gate line formed on the insulation substrate, a data line crossing the gate line to define a pixel area, a thin film transistor including a gate electrode connected to the gate line, a source electrode connected to the data line, and a drain electrode, a passivation layer covering the gate line, the data line and the thin film transistor and including a drain contact hole to expose the drain electrode, and a pixel electrode formed on the pixel area and being connected to the drain contact hole through the drain contact hole. Each of the data line, the source electrode and the drain electrode includes a lower layer having copper and an upper layer covering upper and side surfaces of the lower layer, and the upper layer is thinner than the lower layer.Type: GrantFiled: December 17, 2012Date of Patent: July 29, 2014Assignee: LG Display Co., Ltd.Inventors: Tae-Hyoung Moon, Kyu-Hwang Lee, Kyung-Ha Lee
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Patent number: 8767296Abstract: Disclosed herein is an apparatus for preparation of a film exhibiting polarizing properties by dyeing a substrate film with iodine and then orienting the same through a continuous process, comprising a first bath equipped with a thermometer to measure a temperature of the first bath; a second bath equipped with a thermometer to measure a temperature of the second bath and a densitometer to measure a concentration of the second bath; a third bath in which the iodine-dyed PVA film is stretched by a drawing roller; an oven equipped with a thermometer to measure a temperature of the oven; and a central controller that predicts a transmittance of the polarizing film, and then, controls the temperatures of the first and second baths and the oven and an amount of a composition fed to the second bath.Type: GrantFiled: June 2, 2011Date of Patent: July 1, 2014Assignee: LG Chem, Ltd.Inventors: Ho Kyung Lee, Chang Song Lee, Kyu Hwang Lee, Eung Jin Jang, Joong Suk Nah
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Publication number: 20140102143Abstract: Disclosed herein is a device for cutting a glass sheet, continuously supplied after a melting and solidification process, into quadrangular glass substrates. The glass sheet cutting device includes two or more cutters for cutting a glass sheet into quadrangular glass substrates, a defect inspector for scanning the glass sheet to three-dimensionally check defect positions in a length direction, a width direction and a thickness direction of the glass sheet, a position adjuster for moving at least one of the cutters to a portion of the glass sheet at which few defects are distributed, and a controller for informing the position adjuster of positions of the cutters based on the scanned results received from the defect inspector.Type: ApplicationFiled: October 14, 2013Publication date: April 17, 2014Applicant: LG Chem, Ltd.Inventors: Ho Kyung LEE, Kyu Hwang LEE, Soon Ki HEO
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Publication number: 20140021475Abstract: An array substrate for a display device includes an insulation substrate, a gate line formed on the insulation substrate, a data line crossing the gate line to define a pixel area, a thin film transistor including a gate electrode connected to the gate line, a source electrode connected to the data line, and a drain electrode, a passivation layer covering the gate line, the data line and the thin film transistor and including a drain contact hole to expose the drain electrode, and a pixel electrode formed on the pixel area and being connected to the drain contact hole through the drain contact hole. Each of the data line, the source electrode and the drain electrode includes a lower layer having copper and an upper layer covering upper and side surfaces of the lower layer, and the upper layer is thinner than the lower layer.Type: ApplicationFiled: December 17, 2012Publication date: January 23, 2014Applicant: LG DISPLAY CO., LTD.Inventors: Tae-Hyoung MOON, Kyu-Hwang LEE, Kyung-Ha LEE
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Publication number: 20130317638Abstract: Disclosed is a method of cutting one or more kinds of quadrangular unit pieces having a relatively small size from a quadrangular base material having a relatively large size using a cutter frame including a plurality of cutters to manufacture the quadrangular unit pieces, the method including (a) scanning a quadrangular base material in a longitudinal direction and in a lateral direction of the quadrangular base material to check positions of defects on the quadrangular base material, (b) calculating a yield when imaginarily cutting the quadrangular base material using two or more kinds of cutting frames, (c) selecting one of the cutting frames in which the yield calculated at the calculation step (b) is within a range of upper 30%, and (d) cutting the quadrangular base material using the cutting frame selected at the selection step (c) to manufacture quadrangular unit pieces.Type: ApplicationFiled: July 31, 2013Publication date: November 28, 2013Applicant: LG CHEM, LTD.Inventors: Hokyung LEE, Eungjin JANG, Kyu Hwang LEE, Yoomin LEE, Hoonyeol KIM
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Publication number: 20130214278Abstract: An array substrate for a display device and manufacturing method thereof is disclosed. The device comprises: a substrate; a gate line formed on the substrate along a first direction; a data line formed over the substrate along a second direction, wherein the data line and the gate line cross each other to define a pixel region; a thin film transistor formed in the pixel region, and having a gate electrode connected to the gate line, a source electrode connected to the data line, and a drain electrode; a pixel electrode formed in the pixel region and connected to the drain electrode; a first auxiliary gate pattern formed over the gate line and contacting the gate line; and a first auxiliary data pattern formed over the data line and contacting the data line.Type: ApplicationFiled: August 16, 2012Publication date: August 22, 2013Inventors: Seung-Hee Nam, Soon-Sung Yoo, Tae-Hyoung Moon, Tae-Joon Song, Kyu-Hwang Lee
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Publication number: 20130170032Abstract: Disclosed herein is an apparatus for preparation of a film exhibiting polarizing properties (‘polarizing film’) by dyeing a substrate film with iodine and then orienting the same through a continuous process, and the foregoing apparatus includes, a first bath equipped with a thermometer to measure a temperature of the first bath (‘first bath thermometer’), in which a polyvinylalcohol (PVA) film as a substrate film is washed; a second bath equipped with a thermometer to measure a temperature of the second bath (‘second bath thermometer’) and a densitometer to measure a concentration of the second bath (‘second bath densitometer’), in which the washed PVA film is dipped in an iodine solution and dyed therein; a third bath in which the iodine-dyed PVA film is stretched by a drawing roller to thereby orient the dyed iodine; an oven equipped with a thermometer to measure a temperature of the oven (‘oven thermometer’) to dry the iodine-oriented PVA film; and a central controller that predicts a transmittance of theType: ApplicationFiled: June 2, 2011Publication date: July 4, 2013Applicant: LG Chem, Ltd.Inventors: Ho Kyung Lee, Chang Song Lee, Kyu Hwang Lee, Eung Jin Jang, Joong Suk Nah
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Publication number: 20130078891Abstract: Disclosed herein is a device for cutting a glass sheet, continuously supplied after a melting and solidification process, into quadrangular glass substrates. The glass sheet cutting device includes two or more cutters for cutting a glass sheet into quadrangular glass substrates, a defect inspector for scanning the glass sheet to three-dimensionally check defect positions in a length direction, a width direction and a thickness direction of the glass sheet, a position adjuster for moving at least one of the cutters to a portion of the glass sheet at which few defects are distributed, and a controller for informing the position adjuster of positions of the cutters based on the scanned results received from the defect inspector.Type: ApplicationFiled: April 20, 2011Publication date: March 28, 2013Applicant: LG CHEM., LTDInventors: Ho Kyung Lee, Kyu Hwang Lee, Soon Ki Heo
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Publication number: 20120078406Abstract: Disclosed herein is a method of cutting one or more kinds of quadrangular unit pieces having a relatively small size from a quadrangular base material having a relatively large size using a cutter frame including a plurality of cutters to manufacture the quadrangular unit pieces, the method including (a) an inspection step of scanning a quadrangular base material in a longitudinal direction and in a lateral direction of the quadrangular base material to check positions of defects on the quadrangular base material, (b) a calculation step of calculating a yield when imaginarily cutting the quadrangular base material using two or more kinds of cutting frames, (c) a selection step of selecting one of the cutting frames in which the yield calculated at the calculation step (b) is within a range of upper 30%, and (d) a manufacturing step of cutting the quadrangular base material using the cutting frame selected at the selection step (c) to manufacture quadrangular unit pieces.Type: ApplicationFiled: March 10, 2010Publication date: March 29, 2012Applicant: LG CHEM, LTD.Inventors: Hokyung Lee, Eungjin Jang, Kyu Hwang Lee, Yoomin Lee, Hoonyeol Kim