Patents by Inventor Seok-bum Ma

Seok-bum Ma 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: 5311338
    Abstract: A liquid crystal light valve and manufacturing method thereof is disclosed in which a light-reflecting layer and a light-intercepting layer are constituted by a single metal layer of aluminum with black matrices in a pattern for separating pixels and formed by anodization.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: May 10, 1994
    Assignee: SamSung Electronics Co., Ltd.
    Inventors: Dae-won Kim, Seok-bum Ma
  • Patent number: 5272554
    Abstract: A liquid crystal light valve (LCLV) adapted to a large scale image projecting apparatus or an optical data processing apparatus is disclosed wherein the sectional structure is improved. The LCLV comprises a substrate, an amorphous silicon photoconductor layer formed on the substrate, a light absorbing layer and a dielectric reflection layer formed on the photoconductor layer, wherein the light absorbing layer is made up of a Si/SiO.sub.2 multilayer and the dielectric reflection layer is made up of TiO.sub.2 /SiO.sub.2. Here, the Si/SiO.sub.2 and TiO.sub.2 /SiO multilayers are integrally combined, so that the TiO.sub.2 /SiO.sub.2 multilayer is used as a dielectric mirror and the Si/SiO.sub.2 multilayer is used as a dielectric mirror and a light absorbing layer. A p-type amorphous silicon layer together with boron and hydrogen can be used as the light absorbing layer and a TiO.sub.2 /SiO.sub.2 multilayer may be used as a dielectric mirror.
    Type: Grant
    Filed: January 22, 1992
    Date of Patent: December 21, 1993
    Assignee: Samsung Electronics Co. Ltd.
    Inventors: Il-hwan Ji, Seok-bum Ma