Patents Assigned to SEWHA P&C CO., LTD.
  • Patent number: 9568650
    Abstract: A privacy securing film comprises a louver film consisting of transparent layers and opaque layers arranged alternately, wherein the opaque layer is made of light-absorbing beads having a mean diameter of 0.2 to 20 micrometers and binder bonding said beads each other and adjacent transparent layers, and being characterized in a micro-roughness formed at the interface between the transparent layer and the opaque layer due to the presence of said beads. The privacy securing film of the present invention has a simplified structure, excellent appearance with a simple manufacturing process as well as reduces the creation of a ghost image significantly, as compared with conventional ones.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: February 14, 2017
    Assignee: SEWHA P&C CO., LTD.
    Inventor: Byoung-Woo Hwang
  • Publication number: 20150338558
    Abstract: A privacy securing film comprises a louver film consisting of transparent layers and opaque layers arranged alternatively, wherein the opaque layer is made of light-absorbing beads having a mean diameter of 0.2 to 20 micrometers and binder bonding said beads each other and adjacent transparent layers, and being characterized in a micro-roughness formed at the interface between the transparent layer and the opaque layer due to the presence of said beads. The privacy securing film of the present invention has a simplified structure, excellent appearance with a simple manufacturing process as well as reduces the creation of a ghost image significantly, as compared with conventional ones.
    Type: Application
    Filed: January 8, 2015
    Publication date: November 26, 2015
    Applicant: SEWHA P&C CO., LTD.
    Inventor: Byoung-Woo Hwang