Patents by Inventor Tan Hou Siong

Tan Hou Siong 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).

  • Patterning of electrodes in oled devices
    Patent number: 6699728
    Abstract: An OLED device using improved pillars to facilitate patterning of a conductive layer is described. Conventional use of pillars to pattern electrodes encounters shorting problems due to piling of polymer material at the base of the pillars. This piling deteriorates the profile of the pillars which adversely impacts the ability of the pillars to pattern the conductive layer to form the electrodes. The present invention avoids the shorting problem by separating the pillars into at least first and second sub-pillars. By providing a relatively narrow gap between the sub-pillars, the amount of polymers filling the area between the gap is small. This prevents at least the sidewalls of the pillars facing the gap from being deteriorated by polymer pile-up, thus ensuring that the conductive layer is discontinuous between the sub-pillars.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: March 2, 2004
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Ewald Guenther, Lim Hooi Bin, Soh Ed Vin, Tan Hou Siong, Hagen Klausmann
  • Patterning of electrodes in oled devices with shaped pillars
    Publication number: 20030094607
    Abstract: An OLED device using improved pillars to facilitate patterning of a conductive layer is described. Conventional use of pillars to pattern electrodes encounters shorting problems due to piling of polymer material at the base of the pillars. This piling deteriorates the profile of the pillars which adversely impacts the ability of the pillars to pattern the conductive layer to form the electrodes. The present invention avoids the shorting problem by separating the pillars into at least first and second sub-pillars. By providing a relatively narrow gap between the sub-pillars, the amount of polymers filling the area between the gap is small. This prevents at least the sidewalls of the pillars facing the gap from being deteriorated by polymer pile-up, thus ensuring that the conductive layer is discontinuous between the sub-pillars.
    Type: Application
    Filed: November 20, 2001
    Publication date: May 22, 2003
    Inventors: Ewald Guenther, Lim Hooi Bin, Soh Ed Vin, Tan Hou siong, Hagen Klausmann