Patents by Inventor Eung Jin JANG
Eung Jin JANG 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: 10302833Abstract: The present application relates to a polarizer, a polarizing plate and a display device. The present application can provide a polarizer or a polarizing plate that is applied to various types of display devices, particularly to a display device having a highly reflective liquid crystal panel and that shows excellent characteristics. In addition, the present application can provide a display device including the polarizer or the polarizing plate.Type: GrantFiled: February 1, 2016Date of Patent: May 28, 2019Assignee: LG CHEM, LTD.Inventors: Sung Hyun Nam, Kyung Ki Hong, Eung Jin Jang, Yeong Rae Chang, Heon Kim, Kyun Il Rah, Jong Hyun Jung, Byung Sun Lee, Hong Jun Choi, Moon Soo Park, Sun Kug Kim
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Patent number: 10293590Abstract: A method of continuously manufacturing a display unit according to an exemplary embodiment of the present invention, which bonds sheet pieces of a polarizing film formed by cutting a roll-type optical film into sheet pieces having a predetermined sheet pieces to a panel to manufacture the display unit, continuously carries an optical film, detects a defect of the optical film, extracts a defective area based on information on the detected defect, forms a slit line in a horizontal direction with respect to a carrying direction of the optical film based on the defective area, determines whether the sheet piece of the polarizing film divided by the slit line is a defective sheet piece or a normal sheet piece, peels the sheet piece determined as a normal sheet piece from a release film, and bonds the normal sheet piece and a panel.Type: GrantFiled: May 25, 2017Date of Patent: May 21, 2019Assignee: LG CHEM, LTD.Inventors: Beom Seok Lee, Suk Jae Lee, Kyung Hyeok Park, San Park, Hang Suk Choi, Eung Jin Jang, Bong Su Jeung, Jea Han Ryoo
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Patent number: 10245819Abstract: A system for manufacturing a display unit according to an exemplary embodiment of the present invention includes: a carrying unit configured to carry an optical film including a polarizing film and a release film, wherein the polarizing film includes an adhesive layer through which, a release film adheres to and is peeled from the polarizing film; a cutting unit configured to cut the optical film up to a predetermined depth to form a polarizing film sheet piece on the optical film, without cutting the release film; a panel supply unit configured to continuously supply a panel to an attachment position, at which the polarizing film sheet piece is attached to one surface of the panel; an attachment unit configured to peel the polarizing film sheet piece from the release film, and attach the peeled polarizing film sheet piece to the one surface of the panel supplied by the panel supply unit; and a winding unit configured to wind the release film peeled by the attachment unit, wherein the attachment unit includesType: GrantFiled: June 8, 2017Date of Patent: April 2, 2019Assignee: LG CHEM, LTD.Inventors: Beom Seok Lee, Hang Suk Choi, Eung Jin Jang, Suk Jae Lee, Kyung Hyeok Park
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Patent number: 10228501Abstract: The present invention relates to a method for manufacturing a polarizer, including: a) immersing and swelling a polyvinyl alcohol-based film in an aqueous solution containing an azo-based dye having an absorption wavelength of 300 nm to 550 nm; b) dyeing the swollen polyvinyl alcohol-based film with an iodine-based dye; and c) stretching the dyed polyvinyl alcohol-based film, and a polarizer manufactured using the method.Type: GrantFiled: September 21, 2015Date of Patent: March 12, 2019Assignee: LG CHEM, LTD.Inventors: Jae Il Ryu, Eung Jin Jang, Jin Yong Park, Eungki Lee, Hyung Koo Kang, Taek Geun Nam, Deok Woo Park, Young Gon Kim, Yeon Soo Kim, You Kyeong Kim
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Publication number: 20190025642Abstract: The present application relates to a polarizing plate and a display device. In the present application, a polarizing plate can be provided, which can be applied to a display device comprising a highly reflective panel to solve disadvantages while maintaining advantages of the device. In the present application, a display device comprising the polarizing plate and the highly reflective panel can also be provided.Type: ApplicationFiled: February 3, 2017Publication date: January 24, 2019Inventors: Sung Hyun NAM, Kyung Ki HONG, Yeong Rae CHANG, Heon KIM, Kyun Il RAH, Jong Hyun JUNG, Byung Sun LEE, Eung Jin JANG, Jin Yong PARK, Deok Woo PARK, Ji Young KIM
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Patent number: 10052830Abstract: A film tension control system according to an embodiment of the present disclosure includes a delamination unit installed on a transfer path of a polarizing plate to delaminate a release film from a polarizing film, the polarizing plate including the polarizing film and the release film attached to one surface of the polarizing film, an inspection unit installed on a transfer path of the polarizing film to inspect if impurities are present in an adhesive layer formed on one surface of the polarizing film, a tension indication unit installed on a movement path of the release film to indicate a degree of tension applied to the release film, a re-lamination unit to re-laminate the release film having passed through the tension indication unit on the adhesive layer of the polarizing film having passed through the inspection unit, and a tension adjustment unit installed on the transfer path of the re-laminated polarizing plate to adjust the tension of the optical film and the release film.Type: GrantFiled: March 4, 2015Date of Patent: August 21, 2018Assignee: LG CHEM, LTD.Inventors: Eun-Je Kim, Eung-Jin Jang, Jae-Ok Shin, Youn-Su Kim, Tae-Sick Kim, Jung-Kyu Park, Young-Sun Bang, Eui-Bong Ha, Dong-Ki Hwang, Jung-Sik Yoon
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Patent number: 9914289Abstract: A system for laminating an optical film according to an exemplary embodiment of the present disclosure includes a panel transfer unit to transfer a panel, a first laminating unit to laminate an optical film full-cut into a predetermined length on a first surface of the panel along a first direction parallel to a transfer direction of the panel, and a second laminating unit to laminate an optical film full-cut into a predetermined length on a second surface of the panel along a second direction equal or opposite to the first direction, the second laminating unit rotating the optical film supplied in a full-cut state along the second direction in a horizontal direction and laminating the optical film.Type: GrantFiled: November 10, 2014Date of Patent: March 13, 2018Assignee: LG CHEM, LTD.Inventors: Kyoung-Sik Kim, Eung-Jin Jang, Suk-Jae Lee, Kyoung-Ho Cho, Cheon-Ho Park, Won-Cheul Ju, Beom-Seok Lee, Jea-Han Ryoo
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Publication number: 20180017724Abstract: The present application relates to a polarizer, a polarizing plate and a display device. The present application can provide a polarizer or a polarizing plate that is applied to various types of display devices, particularly to a display device having a highly reflective liquid crystal panel and that shows excellent characteristics. In addition, the present application can provide a display device including the polarizer or the polarizing plate.Type: ApplicationFiled: February 1, 2016Publication date: January 18, 2018Inventors: Sung Hyun NAM, Kyung Ki HONG, Eung Jin JANG, Yeong Rae CHANG, Heon KIM, Kyun ll RAH, Jong Hyun JUNG, Byung Sun LEE, Hong Jun CHOI, Moon Soo PARK, Sun Kug KIM
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Publication number: 20180009211Abstract: A system for manufacturing a display unit according to an exemplary embodiment of the present invention includes: a carrying unit configured to carry an optical film including a polarizing film and a release film, wherein the polarizing film includes an adhesive layer through which, a release film adheres to and is peeled from the polarizing film; a cutting unit configured to cut the optical film up to a predetermined depth to form a polarizing film sheet piece on the optical film, without cutting the release film; a panel supply unit configured to continuously supply a panel to an attachment position, at which the polarizing film sheet piece is attached to one surface of the panel; an attachment unit configured to peel the polarizing film sheet piece from the release film, and attach the peeled polarizing film sheet piece to the one surface of the panel supplied by the panel supply unit; and a winding unit configured to wind the release film peeled by the attachment unit, wherein the attachment unit includesType: ApplicationFiled: June 8, 2017Publication date: January 11, 2018Inventors: Beom Seok LEE, Hang Suk CHOI, Eung Jin JANG, Suk Jae LEE, Kyung Hyeok PARK
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Publication number: 20170363886Abstract: Disclosed is a panel reversing apparatus which reverses a panel, the panel reversing apparatus including: a panel support unit which supports the panel; and a rotating unit which rotates the panel support unit so as to reverse a direction, in which one surface of the panel supported by the panel support unit faces, and a direction, in which the other surface of the panel faces, in which the panel support unit includes a single surface contact unit which is in contact with only one surface between the one surface and the other surface of the panel.Type: ApplicationFiled: June 12, 2017Publication date: December 21, 2017Inventors: Beom Seok LEE, Suk Jae LEE, Kyung Hyeok PARK, San PARK, Hang Suk CHOI, Eung Jin JANG, Bong Su JEUNG, Jea Han RYOO
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Publication number: 20170348957Abstract: Provided is a system for continuously manufacturing an optical display device includes: a feeding unit which transfers and feeds an optical film, wherein the optical film includes a release film which is extended in a longitudinal direction, and a plurality of sheet pieces of a polarization film which is arranged in a longitudinal direction and includes an adhesive layer, wherein the sheet pieces of a polarization film is adhered to the release film through the adhesive layer so that the sheet piece of the polarization film is peeled from the release film; a peeling unit which peels the sheet pieces of the polarization film from the release film by folding back inwardly the release film of the optical films fed by the feeding unit; a winding unit which winds the release film from which the sheet piece of the polarization film is peeled by the peeling unit; a laminating unit which laminates on the panel the sheet piece of the polarization film peeled from the release film, while transferring the panel; and a cType: ApplicationFiled: May 25, 2017Publication date: December 7, 2017Inventors: San PARK, Hang Suk CHOI, Eung Jin JANG, Suk Jae LEE, Kyung Hyeok PARK, Bong Su JEUNG, Jea Han RYOO, Cheon Ho PARK, Pil Soo NAM, Beom Seok LEE
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Publication number: 20170341362Abstract: According to the present invention, a system for manufacturing an optical display element, which manufactures an optical display element by laminating optical films on both planes of a rectangular panel, includes: a panel supply unit supplying the panel; a panel transport unit transporting the supplied panel; a first laminating unit laminating the optical film onto a first plane of the panel in a direction parallel to a panel transport direction; and a second laminating unit laminating the optical film onto a second plane of the panel so that an absorption axis direction of the optical film is orthogonal to the absorption axis direction of the optical film laminated onto the first plane of the panel, in which when a panel supply direction set to be parallel to the panel transport direction between a longitudinal direction of an initial long edge and the longitudinal direction of an initial short edge of the panel supplied by the panel supply unit and a first laminating direction set so as to laminate the optiType: ApplicationFiled: May 24, 2017Publication date: November 30, 2017Inventors: Beom Seok LEE, Suk Jae LEE, Kyung Hyeok PARK, San PARK, Hang Suk CHOI, Eung Jin JANG, Bong Su JEUNG, Jea Han RYOO
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Publication number: 20170341361Abstract: A method of continuously manufacturing a display unit according to an exemplary embodiment of the present invention, which bonds sheet pieces of a polarizing film formed by cutting a roll-type optical film into sheet pieces having a predetermined sheet pieces to a panel to manufacture the display unit, continuously carries an optical film, detects a defect of the optical film, extracts a defective area based on information on the detected defect, forms a slit line in a horizontal direction with respect to a carrying direction of the optical film based on the defective area, determines whether the sheet piece of the polarizing film divided by the slit line is a defective sheet piece or a normal sheet piece, peels the sheet piece determined as a normal sheet piece from a release film, and bonds the normal sheet piece and a panel.Type: ApplicationFiled: May 25, 2017Publication date: November 30, 2017Inventors: Beom Seok LEE, Suk Jae LEE, Kyung Hyeok PARK, San PARK, Hang Suk CHOI, Eung Jin JANG, Bong Su JEUNG, Jea Han RYOO
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Publication number: 20170341363Abstract: According to an exemplary embodiment of the present invention, there is provided a system for manufacturing a display unit, which includes: a carrying unit configured to carry an optical film, wherein the optical film includes a release film which is extended in a longitudinal direction, and a plurality of sheet pieces of a polarizing film which are arranged in a longitudinal direction and include adhesive layers, wherein the sheet piece of a polarizing film is adhered to the release film through the adhesive layer so that the polarizing film sheet piece is peeled from the release film; a peeling unit configured to fold back inwardly the release film of the optical film carried by the carrying unit toward an inner side and peel the polarizing film sheet piece from the release film; a winding unit configured to wind the release film peeled by the peeling unit; and an attachment unit configured to attach the polarizing film sheet piece peeled from the release film to one surface of a panel, while carrying the pType: ApplicationFiled: May 25, 2017Publication date: November 30, 2017Inventors: Beom Seok LEE, Suk Jae LEE, Kyung Hyeok PARK, San PARK, Hang Suk CHOI, Eung Jin JANG, Bong Su JEUNG, Jea Han RYOO
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Publication number: 20170343714Abstract: Provided is a method for an optical film which elongates by forming a plurality of sheet pieces by cutting a pre-processing optical film in a width direction of the pre-processing optical film, aligning the plurality of sheet pieces in such a manner that first end portions parallel to the longitudinal direction of the pre-processing optical film are opposite to each other, and connecting end portions of the plurality of sheet pieces to each other.Type: ApplicationFiled: May 24, 2017Publication date: November 30, 2017Inventors: Beom Seok LEE, Suk Jae LEE, Kyung Hyeok PARK, San PARK, Hang Suk CHOI, Eung Jin JANG, Bong Su JEUNG, Jea Han RYOO
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Publication number: 20170341360Abstract: Disclosed is a system for manufacturing a display unit, including: a carrying unit configured to carry an optical film; a cutting unit configured to form a slit line on the optical film from a side opposite to the release film by a predetermined depth, in which the release film is not cut; a peeling unit configured to peel the polarizing film from the release film; and an attaching unit configured to attach the polarizing film peeled from the release film to a panel, in which the carrying unit includes a carrying direction changing unit, which changes a direction in which the optical film is carried so that the optical film carried along a first straight section is carried along a second straight section crossing the first straight section, and when the carrying of the optical film is stopped, the slit line formed on the optical film is positioned in the first straight section or the second straight section among the first straight section, the second straight section, and a curved section positioned betweenType: ApplicationFiled: May 25, 2017Publication date: November 30, 2017Inventors: Beom Seok LEE, Suk Jae LEE, Kyung Hyeok PARK, San PARK, Hang Suk CHOI, Eung Jin JANG, Bong Su JEUNG, Jea Han RYOO
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Publication number: 20170343838Abstract: According to the present invention, a system for manufacturing an optical display element, which manufactures an optical display element by laminating optical films on both planes of a rectangular panel according to the present invention includes: a panel supply unit supplying the panel; a first laminating unit laminating a first optical film onto the panel in a first direction selected from a long-edge longitudinal direction and a short-edge longitudinal direction of the panel at a first side selected from the two sides of the panel; a second laminating unit laminating a second optical film onto a plane opposite to the plane onto which the first optical film is laminated in a second direction selected from the long-edge longitudinal direction and the short-edge longitudinal direction of the panel and different from the first direction; and a first reverse unit reversing, when a first laminating plane onto which the first optical film is laminated is selected from between one plane and the other plane of theType: ApplicationFiled: May 24, 2017Publication date: November 30, 2017Inventors: Beom Seok LEE, Suk Jae Lee, Kyung Hyeok Park, San Park, Hang Suk Choi, Eung Jin Jang, Bong Su Jeung, Jea Han Ryoo
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Publication number: 20170285236Abstract: The present invention relates to a method for manufacturing a polarizer, including: a) immersing and swelling a polyvinyl alcohol-based film in an aqueous solution containing an azo-based dye having an absorption wavelength of 300 nm to 550 nm; b) dyeing the swollen polyvinyl alcohol-based film with an iodine-based dye; and c) stretching the dyed polyvinyl alcohol-based film, and a polarizer manufactured using the method.Type: ApplicationFiled: September 21, 2015Publication date: October 5, 2017Inventors: Jae Il RYU, Eung Jin JANG, Jin Yong PARK, Eungki LEE, Hyung Koo KANG, Taek Geun NAM, Deok Woo PARK, Young Gon KIM, Yeon Soo KIM, You Kyeong KIM
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Publication number: 20170254939Abstract: The present specification relates to a method for manufacturing a polarizing plate and a polarizing plate manufactured using the same. More specifically, the present specification relates to a method for manufacturing a polarizing plate which locally has a depolarized area and a polarizing plate manufactured using the same.Type: ApplicationFiled: October 5, 2015Publication date: September 7, 2017Inventors: Byung Sun LEE, Hyung Koo KANG, Ho Jeong YUN, Eung Jin JANG, Kyun II RAH
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Patent number: 9694571Abstract: A system for laminating an optical film according to an exemplary embodiment of the present disclosure includes a panel transfer unit to transfer a panel, a first laminating unit installed on a transfer line of the panel to laminate an optical film on a first surface of the panel along a first direction parallel to a transfer direction of the panel, and a second laminating unit installed on the transfer line of the panel to laminate an optical film on a second surface of the panel along a direction perpendicular to the first direction.Type: GrantFiled: November 10, 2014Date of Patent: July 4, 2017Assignee: LG CHEM, LTD.Inventors: Kyoung-Sik Kim, Eung-Jin Jang, Suk-Jae Lee, Kyoung-Ho Cho, Cheon-Ho Park, Won-Cheul Ju, Beom-Seok Lee, Jea-Han Ryoo