Patents by Inventor Joon Hwan Hwang

Joon Hwan Hwang 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: 12037477
    Abstract: Provided is a near-infrared ray absorbing article. A near-infrared ray absorbing article of the present invention is capable of preventing a decrease in visible transmittance and near-infrared absorption due to the interaction between a plurality of organic materials forming light-absorbing layers. In addition, the near-infrared ray absorbing article of the present invention has the advantage of being able to be thinner. In addition, the near-infrared ray absorbing article of the present invention has the advantage of excellent mechanical properties such as strength and heat resistance.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: July 16, 2024
    Assignee: LMS CO., LTD.
    Inventors: Sung Hwan Moon, Seung Man Han, Seon Ho Yang, Tae Kwang Park, Joon Ho Jung, Bo Chul Kang, Hee Kyeong Kim, Seong Don Hwang, Seong Yong Yoon, Ho Seong Na, Ji Tae Kim
  • Patent number: 10670796
    Abstract: Disclosed is an organic-inorganic hybrid composition. The organic-inorganic hybrid composition includes a curable resin and inorganic particles dispersed in the curable resin. The inorganic particle has a core-shell structure composed of a core containing titanium and barium, and a shell containing at least one selected from zirconium, aluminum and chromium. According to this organic-inorganic hybrid composition, a liquid-phase refractive index of the composition can be improved, and as a result, luminance and light transmittance can be improved in an optical member using the same.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: June 2, 2020
    Assignee: LMS CO., LTD.
    Inventors: Joon Hwan Hwang, Yong Jin Kang
  • Patent number: 10506707
    Abstract: A flexible display device including; a base film; a display sheet formed over the base film; and a structural pattern formed below the base film for moving a neutral plane with respect to a bending stress applied to the display sheet to a layer having relatively low rupture point among the layers consisting of the display sheet. The neutral plane is moved to a layer having a relative low rupture point in a flexible display device by forming the structural patterns so that the bending stress applying to the layer having a relative low rupture point can be minimized.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: December 10, 2019
    Assignee: LMS CO., LTD
    Inventors: Jang Hee Cho, Chang Hyo Lee, Sung Sik Cho, Yong Il Kim, Joon Hwan Hwang
  • Patent number: 10180531
    Abstract: A laminated optical sheet module includes: an upper optical sheet having a first structure pattern in which a first unit light collector having an inclined surface, the cross-section area of which decrease when progressing upwardly, is continuously repeated; and a lower optical sheet laminated beneath the upper optical sheet and having a second structure pattern in which a second unit light collector having an inclined surface, the cross-sectional area of which decreases when progressing upwardly, is continuously repeated. The vertical distance between the lowermost portion and the uppermost portion of the second unit collector is greater than the vertical distance between the lowermost portion and the uppermost portion of the first unit collector. The surface area of the inclined surface of the second unit collector is relatively larger than the surface area of the inclined surface of the first unit collector.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: January 15, 2019
    Assignee: LMS Co., LTD.
    Inventors: Jee Hong Min, Young Il Kim, Sung Sik Cho, Woo Jong Lee, Tae Jun Lee, Hee Jeong Kim, Joon Hwan Hwang
  • Patent number: 9671541
    Abstract: Provided is an optical sheet module that includes: a first optical sheet that includes a first base substrate, and a first structurization pattern configured to refract light incident from the first base substrate in a normal direction; a second optical sheet that is formed above the first optical sheet, and includes a second base substrate and a second structurization pattern for refracting the light incident from the second base substrate in the normal direction and intersecting an extension direction of the pattern with an extension direction of the first structurization pattern; and a reflective polarizing sheet that is formed on the second optical sheet, reflects light polarized in the first direction to the lower portion, and transmits light polarized in the second direction to a display, wherein the first optical sheet and the second optical sheet are bonded to each other.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: June 6, 2017
    Assignee: LMS CO., LTD.
    Inventors: Jee Hong Min, Joon Hwan Hwang, Yong Shig Sim
  • Publication number: 20160070053
    Abstract: Disclosed is an organic-inorganic hybrid composition. The organic-inorganic hybrid composition includes a curable resin and inorganic particles dispersed in the curable resin. The inorganic particle has a core-shell structure composed of a core containing titanium and barium, and a shell containing at least one selected from zirconium, aluminum and chromium. According to this organic-inorganic hybrid composition, a liquid-phase refractive index of the composition can be improved, and as a result, luminance and light transmittance can be improved in an optical member using the same.
    Type: Application
    Filed: April 22, 2014
    Publication date: March 10, 2016
    Applicant: LMS CO., LTD.
    Inventors: Joon Hwan HWANG, Yong Jin KANG
  • Publication number: 20160014883
    Abstract: A flexible display device including; a base film; a display sheet formed over the base film; and a structural pattern formed below the base film for moving a neutral plane with respect to a bending stress applied to the display sheet to a layer having relatively low rupture point among the layers consisting of the display sheet. The neutral plane is moved to a layer having a relative low rupture point in a flexible display device by forming the structural patterns so that the bending stress applying to the layer having a relative low rupture point can be minimized.
    Type: Application
    Filed: March 3, 2014
    Publication date: January 14, 2016
    Inventors: Jang Hee CHO, Chang Hyo LEE, Sung Sik CHO, Yong il KIM, Joon Hwan HWANG
  • Publication number: 20150355396
    Abstract: Provided is an optical sheet module that includes: a first optical sheet that includes a first base substrate, and a first structurization pattern configured to refract light incident from the first base substrate in a normal direction; a second optical sheet that is formed above the first optical sheet, and includes a second base substrate and a second structurization pattern for refracting the light incident from the second base substrate in the normal direction and intersecting an extension direction of the pattern with an extension direction of the first structurization pattern; and a reflective polarizing sheet that is formed on the second optical sheet, reflects light polarized in the first direction to the lower portion, and transmits light polarized in the second direction to a display, wherein the first optical sheet and the second optical sheet are bonded to each other.
    Type: Application
    Filed: December 27, 2013
    Publication date: December 10, 2015
    Applicant: LMS CO., LTD
    Inventors: Jee Hong MIN, Joon Hwan HWANG, Yong Shig SIM
  • Publication number: 20150301265
    Abstract: A laminated optical sheet module includes: an upper optical sheet having a first structure pattern in which a first unit light collector having an inclined surface, the cross-section area of which decrease when progressing upwardly, is continuously repeated; and a lower optical sheet laminated beneath the upper optical sheet and having a second structure pattern in which a second unit light collector having an inclined surface, the cross-sectional area of which decreases when progressing upwardly, is continuously repeated. The vertical distance between the lowermost portion and the uppermost portion of the second unit collector is greater than the vertical distance between the lowermost portion and the uppermost portion of the first unit collector. The surface area of the inclined surface of the second unit collector is relatively larger than the surface area of the inclined surface of the first unit collector.
    Type: Application
    Filed: June 24, 2013
    Publication date: October 22, 2015
    Inventors: Jee Hong Min, Young Il Kim, Sung Sik Cho, Woo Jong Lee, Tae Jun Lee, Hee Jeong Kim, Joon Hwan Hwang
  • Patent number: 9052498
    Abstract: There is disclosed a multilayer optical sheet module including an upper optical sheet comprising a first structural pattern projected upward; a lower optical sheet disposed under the upper optical sheet, the lower optical sheet comprising a second structural pattern projected toward the upper optical sheet; and an adhesion layer provided between the upper optical sheet and the lower optical sheet, wherein the second structural pattern includes a light transmitting part having a traverse cross section getting smaller along an upward direction; and an embedded part continuously connected to an upper portion of the light transmitting part, with a predetermined portion embedded in the adhesion layer, and a circumference of a cross section possessed by the embedded part, contacting with the adhesion layer, is larger than a circumference of a virtual cross section locus formed by extending the light transmitting part upward, with a continuous slope.
    Type: Grant
    Filed: December 8, 2012
    Date of Patent: June 9, 2015
    Assignee: LMS CO., LTD.
    Inventors: Jee Hong Min, Young Il Kim, Sung Sik Cho, Woo Jong Lee, Tae Jun Lee, Hee Jeong Kim, Joon Hwan Hwang, Sung Min Cho, Oh Hyun Kwon, Jin Gil Jeong
  • Publication number: 20130148198
    Abstract: There is disclosed a multilayer optical sheet module including an upper optical sheet comprising a first structural pattern projected upward; a lower optical sheet disposed under the upper optical sheet, the lower optical sheet comprising a second structural pattern projected toward the upper optical sheet; and an adhesion layer provided between the upper optical sheet and the lower optical sheet, wherein the second structural pattern includes a light transmitting part having a traverse cross section getting smaller along an upward direction; and an embedded part continuously connected to an upper portion of the light transmitting part, with a predetermined portion embedded in the adhesion layer, and a circumference of a cross section possessed by the embedded part, contacting with the adhesion layer, is larger than a circumference of a virtual cross section locus formed by extending the light transmitting part upward, with a continuous slope.
    Type: Application
    Filed: December 8, 2012
    Publication date: June 13, 2013
    Inventors: Jee Hong Min, Young Il Kim, Sung Sik Cho, Woo Jong Lee, Tae Jun Lee, Hee Jeong Kim, Joon Hwan Hwang, Sung Min Cho, Oh Hyun Kwon, Jin Gil Jeong