Patents by Inventor Bumhee Park

Bumhee 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: 7906909
    Abstract: A plasma display panel is disclosed. The plasma display panel includes a front substrate, a rear substrate facing the front substrate, a barrier rib that is positioned between the front and rear substrates and partitions a discharge cell, and a phosphor layer formed inside the discharge cell. The phosphor layer includes a first phosphor layer emitting first color light, a second phosphor layer emitting second color light, and a third phosphor layer emitting third color light. The first phosphor layer includes a first pigment, and the second phosphor layer includes a second pigment. An average particle size of the second phosphor layer is larger than an average particle size of the first phosphor layer, and a content of the second pigment is more than a content of the first pigment.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: March 15, 2011
    Assignee: LG Electronics Inc.
    Inventors: Bumhee Park, Yoonlae Cho, Sangchul Hwang
  • Publication number: 20090009437
    Abstract: A plasma display panel and a plasma display apparatus are disclosed. The plasma display panel includes a front substrate, a scan electrode and a sustain electrode positioned parallel to each other on the front substrate, an upper dielectric layer positioned on the scan electrode and the sustain electrode, a rear substrate positioned to be opposite to the front substrate, a barrier rib positioned between the front and rear substrates to partition a discharge cell, and a phosphor layer positioned inside the discharge cell. The upper dielectric layer includes a glass-based material and a first blue pigment. The phosphor layer includes a first phosphor layer emitting red light, a second phosphor layer emitting blue light, and a third phosphor layer emitting green light. The first phosphor layer includes a red pigment.
    Type: Application
    Filed: October 31, 2007
    Publication date: January 8, 2009
    Inventors: Sangchul Hwang, Changhyun Kim, Bumhee Park
  • Publication number: 20090009080
    Abstract: A plasma display panel is disclosed. The plasma display panel includes a front substrate, a rear substrate positioned to be opposite to the front substrate, a barrier rib that is positioned between the front substrate and the rear substrate and partitions a discharge cell, and a phosphor layer that is positioned inside the discharge cell. The phosphor layer includes a first phosphor layer emitting red light, a second phosphor layer emitting blue light and a third phosphor layer emitting green light. The first phosphor layer includes a first phosphor material with a white-based color and a red pigment. A content of the red pigment ranges from 0.01 to 5 parts by weight.
    Type: Application
    Filed: October 31, 2007
    Publication date: January 8, 2009
    Applicant: LG ELECTRONICS INC.
    Inventors: Cheonwoon JI, Sanghan LEE, Bumhee PARK
  • Publication number: 20090009083
    Abstract: A plasma display panel is disclosed. The plasma display panel includes a front substrate, a rear substrate facing the front substrate, a barrier rib that is positioned between the front and rear substrates and partitions a discharge cell, and a phosphor layer formed inside the discharge cell. The phosphor layer includes a first phosphor layer emitting first color light, a second phosphor layer emitting second color light, and a third phosphor layer emitting third color light. The first phosphor layer includes a first pigment, and the second phosphor layer includes a second pigment. An average particle size of the second phosphor layer is larger than an average particle size of the first phosphor layer, and a content of the second pigment is more than a content of the first pigment.
    Type: Application
    Filed: July 1, 2008
    Publication date: January 8, 2009
    Inventors: Bumhee Park, Yoonlae Cho, Sangchul Hwang