Patents by Inventor Si Kyun PARK

Si Kyun PARK 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: 11041057
    Abstract: The present invention provides a window film, a manufacturing method thereof, and a display device including the same. The window film comprises: a basic material layer; a window coating layer formed on one surface of the basic material layer; and a back coating layer formed on the other surface of the basic material layer, wherein the window film has a relation of formula 1.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: June 22, 2021
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Ji Young Han, Si Kyun Park, Dong Myeong Shin, Nak Hyun Sung
  • Patent number: 10797261
    Abstract: The present invention relates to a display film and, more particularly, to a display film comprising a substrate layer and a coating layer formed on one surface of the substrate layer, wherein a first critical radius of curvature measured in a direction in which the side surface of the coating layer becomes concave is at most about 10 mm, and a second critical radius of curvature measured in a direction in which the side surface of the substrate layer becomes concave is at most about 5 mm. The display film according to the present invention has a high surface hardness while exhibiting superior flexibility in both directions vertical to the plane direction of the film and thus is suitable for application as an outer window film for a display and particularly has the property of being applicable to a flexible display.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: October 6, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jin Hee Choi, Kyoung Ku Kang, Si Kyun Park, Jung Hyo Lee, Sung Han Kim, Joo Hui Kim
  • Patent number: 10696016
    Abstract: A window film and a flexible display including the same. The window film includes a base layer, a window coating layer on a surface of the base layer, and a back coating layer on another surface of the base layer, wherein the window coating layer is formed from a composition for window coating layers comprising a silicon-based resin, and the window film has an elastic modulus of about 1,000 Mpa or more on the back coating layer and has a pencil hardness of about 6H or higher on an adhesive layer.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: June 30, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jung Hyo Lee, Sung Han Kim, Si Kyun Park, Joo Hui Kim, Eun Su Lee, Jin Hee Choi, Nak Hyun Sung
  • Publication number: 20200108587
    Abstract: The present invention provides a window film, a manufacturing method thereof, and a display device including the same. The window film comprises: a basic material layer; a window coating layer formed on one surface of the basic material layer; and a back coating layer formed on the other surface of the basic material layer, wherein the window film has a relation of formula 1.
    Type: Application
    Filed: November 3, 2017
    Publication date: April 9, 2020
    Inventors: Ji Young HAN, Si Kyun PARK, Dong Myeong SHIN, Nak Hyun SUNG
  • Patent number: 10611925
    Abstract: Provided are: a composition for a window film, containing a siloxane resin including chemical formula 1 below and an iodonium ion-containing photo-cationic initiator; a flexible window film formed therefrom; and a flexible display device comprising the same. Chemical formula 1: (R1SiO3/2)x(R2R3SiO2/2)y.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: April 7, 2020
    Assignees: Samsung SDI CO., Ltd., Samsung Electronics Co., Ltd.
    Inventors: Si Kyun Park, Kyoung Ku Kang, Jung Hyo Lee, Jin Hee Choi, Sung Han Kim, Joo Hui Kim, Nak Hyun Sung, Eun Su Lee
  • Patent number: 10613260
    Abstract: Provided are a window film for a display and a display device including the same, and the window film for a display comprises: a substrate layer; a coating layer formed on one side of the substrate layer; and an adhesive layer formed on the other side of the substrate layer, wherein the coating layer and/or the adhesive layer includes, relative to each layer, a UV absorbent of approximately 3 wt % to approximately 20 wt %, and the window film for a display has a transmittance of approximately 1% or less for a wavelength of 390 nm or less.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: April 7, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jin Hee Choi, Kyoung Ku Kang, Si Kyun Park, Joo Hui Kim
  • Patent number: 10508218
    Abstract: A window film includes a base layer and a coating layer formed on the base layer. The coating layer contains a silicone resin, and the window film contains a dye having a maximum absorption wavelength of about 500 nm to about 650 nm. A display includes the window film, and may be a flexible display.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: December 17, 2019
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Jung Hyo Lee, Kyoung Ku Kang, Sung Han Kim, Joo Hui Kim, Si Kyun Park, Nak Hyun Sung, Jin Hee Choi
  • Patent number: 10450482
    Abstract: Provided are: a composition for a window film; a flexible window film formed therefrom; and a flexible display device comprising the same, wherein the composition contains: a siloxane resin comprising chemical Chemical Formula 1 or 2 or a mixture thereof; a cross-linking agent; and an initiator, the cross-linking agent being contained in a content of about 10-30 parts by weight on the basis of 100 parts by weight of the siloxane resin or the mixture thereof.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: October 22, 2019
    Assignees: Samsung SDI Co., Ltd., Samsung Electronics Co., Ltd.
    Inventors: Joo Hui Kim, Si Kyun Park, Kyoung Ku Kang, Sung Han Kim, Jung Hyo Lee, Jin Hee Choi
  • Publication number: 20170349787
    Abstract: Provided are: a composition for a window film, containing a siloxane resin including chemical formula 1 below and an iodonium ion-containing photo-cationic initiator; a flexible window film formed therefrom; and a flexible display device comprising the same. Chemical formula 1: (R1SiO3/2)x(R2R3SiO2/2)y.
    Type: Application
    Filed: December 22, 2015
    Publication date: December 7, 2017
    Inventors: Si Kyun Park, Kyoung Ku Kang, Jung Hyo Lee, Jin Hee Choi, Sung Han Kim, Joo Hui Kim, Nak Hyun Sung, Eun Su Lee
  • Publication number: 20170349786
    Abstract: Provided are: a composition for a window film; a flexible window film formed therefrom; and a flexible display device comprising the same, wherein the composition contains: a siloxane resin comprising chemical Chemical Formula 1 or 2 or a mixture thereof; a cross-linking agent; and an initiator, the cross-linking agent being contained in a content of about 10-30 parts by weight on the basis of 100 parts by weight of the siloxane resin or the mixture thereof.
    Type: Application
    Filed: December 16, 2015
    Publication date: December 7, 2017
    Inventors: Joo Hui Kim, Si Kyun Park, Kyoung Ku Kang, Sung Han Kim, Jung Hyo Lee, Jin Hee Choi
  • Publication number: 20170324059
    Abstract: The present invention relates to a display film and, more particularly, to a display film comprising a substrate layer and a coating layer formed on one surface of the substrate layer, wherein a first critical radius of curvature measured in a direction in which the side surface of the coating layer becomes concave is at most about 10 mm, and a second critical radius of curvature measured in a direction in which the side surface of the substrate layer becomes concave is at most about 5 mm. The display film according to the present invention has a high surface hardness while exhibiting superior flexibility in both directions vertical to the plane direction of the film and thus is suitable for application as an outer window film for a display and particularly has the property of being applicable to a flexible display.
    Type: Application
    Filed: October 19, 2015
    Publication date: November 9, 2017
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Jin Hee Choi, Kyoung Ku Kang, Si Kyun Park, Jung Hyo Lee, Sung Han Kim, Joo Hui Kim
  • Publication number: 20170322354
    Abstract: Provided are a window film for a display and a display device including the same, and the window film for a display comprises: a substrate layer; a coating layer formed on one side of the substrate layer; and an adhesive layer formed on the other side of the substrate layer, wherein the coating layer and/or the adhesive layer includes, relative to each layer, a UV absorbent of approximately 3 wt % to approximately 20 wt %, and the window film for a display has a transmittance of approximately 1% or less for a wavelength of 390 nm or less.
    Type: Application
    Filed: November 10, 2015
    Publication date: November 9, 2017
    Inventors: Jin Hee Choi, Kyoung Ku Kang, Si Kyun Park, Joo Hui Kim
  • Patent number: 9688088
    Abstract: The present invention relates to a thermal transfer film comprising: a base layer; and a light-to-heat conversion layer which is laminated on top of the base layer and includes a first layer laminated on top of the base layer and a second layer laminated on top of the first layer in the thickness direction, wherein light-to-heat conversion materials are more omnipresent in the first layer than the second layer. The present invention also relates to an organic electroluminescent device prepared using said film.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: June 27, 2017
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Jung Hyo Lee, Kyoung Ku Kang, Si Kyun Park, Seong Heun Cho, Sung Han Kim, Se Hyun Park, Eun Su Lee, Jin Hee Choi
  • Patent number: 9676219
    Abstract: The present invention relates to a heat transfer film and an organic electroluminescent element manufactured using the same. More specifically, the present invention relates to: a heat transfer film comprising a base film and an outermost layer formed on the base film, wherein a ratio of an elastic modulus of the outermost layer to an elastic modulus of the base film at 25° C. and relative humidity of 45% is approximately 1 or more; and an organic electroluminescent element manufactured using the same.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: June 13, 2017
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Seong Heun Cho, Kyoung Ku Kang, Si Kyun Park, Sung Han Kim, Se Hyun Park, Eun Su Lee, Jung Hyo Lee, Jin Hee Choi
  • Patent number: 9620715
    Abstract: The present invention relates to a thermal transfer film comprising: a photothermal conversion layer; and a diffusion member formed on the upper surface of said photothermal conversion layer, wherein the diffusion member is a thermal transfer film having about 10% or more of the haze, and also relates to a method for manufacturing same, and to an organic electroluminescent device manufactured using said method.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: April 11, 2017
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Seong Heun Cho, Kyoung Ku Kang, Se Hyun Park, Si Kyun Park, Eun Gon Lee, Hyoung Tae Im, Jung Hyo Lee
  • Patent number: 9610794
    Abstract: The present invention relates to a thermal transfer film and to an organic electroluminescent device prepared using same, wherein the thermal transfer film includes a base film and an outermost layer which is formed on the base film and has 2% or more of a thickness change ratio expressed by formula 1.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: April 4, 2017
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Se Hyun Park, Kyoung Ku Kang, Jung Hyo Lee, Min Hye Kim, Sung Han Kim, Si Kyun Park, Eun Su Lee, Seong Heun Cho, Jin Hee Choi
  • Publication number: 20170028677
    Abstract: A window film and a flexible display including the same. The window film includes a base layer, a window coating layer on a surface of the base layer, and a back coating layer on another surface of the base layer, wherein the window coating layer is formed from a composition for window coating layers comprising a silicon-based resin, and the window film has an elastic modulus of about 1,000 Mpa or more on the back coating layer and has a pencil hardness of about 6H or higher on an adhesive layer.
    Type: Application
    Filed: July 28, 2016
    Publication date: February 2, 2017
    Inventors: Jung Hyo Lee, Sung Han Kim, Si Kyun Park, Joo Hui Kim, Eun Su Lee, Jin Hee Choi, Nak Hyun Sung
  • Patent number: 9375906
    Abstract: The present invention relates to a method for manufacturing a film laminate and to a film laminated formed by the method. The method comprises the steps of: applying a photocurable composition to a first base film; and irradiating light from a UV LED in order to harden the photocurable composition, wherein the first base film has a transmittance of approximately 50% or higher at the emission wavelength of the UV LED.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: June 28, 2016
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Jin Ki Hong, Seong Heun Cho, Kyoung Ku Kang, Hyoung Tae Im, Jung Hyo Lee, Si Kyun Park, Se Hyun Park
  • Publication number: 20160053138
    Abstract: A window film includes a base layer and a coating layer formed on the base layer. The coating layer contains a silicone resin, and the window film contains a dye having a maximum absorption wavelength of about 500 nm to about 650 nm. A display includes the window film, and may be a flexible display.
    Type: Application
    Filed: August 19, 2015
    Publication date: February 25, 2016
    Inventors: Jung Hyo Lee, Kyoung Ku Kang, Sung Han Kim, Joo Hui Kim, Si Kyun Park, Nak Hyun Sung, Jin Hee Choi
  • Publication number: 20150375551
    Abstract: The present invention relates to a heat transfer film and an organic electroluminescent element manufactured using the same. More specifically, the present invention relates to: a heat transfer film comprising a base film and an outermost layer formed on the base film, wherein a ratio of an elastic modulus of the outermost layer to an elastic modulus of the base film at 25° C. and relative humidity of 45% is approximately 1 or more; and an organic electroluminescent element manufactured using the same.
    Type: Application
    Filed: September 30, 2013
    Publication date: December 31, 2015
    Inventors: Seong Heun Cho, Kyoung Ku Kang, Si Kyun Park, Sung Han Kim, Se Hyun Park, Eun Su Lee, Jung Hyo Lee, Jin Hee Choi