Patents by Inventor Joerg Spengler

Joerg Spengler 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).

  • Liquid crystal display device having uniform integrated spacers
    Patent number: 6788380
    Abstract: A reflective liquid crystal display (LCD) device includes a plurality of openings patterned in the pixel metal layer in the peripheral region of the device exposing the insulating layer beneath, a plurality of light-shielding islands beneath the openings in the pixel metal layer, and a plurality of walls formed on the islands surrounding the openings and extending substantially between the islands and the pixel metal layer. A plurality of spacers are disposed on the exposed portions of the insulating layer in the peripheral region for supporting the transparent (e.g., glass) layer above and providing a space for the liquid crystal material. The structure enhances display uniformity by making the spacers formed in the peripheral area more closely match the spacers formed in the pixel area of the device.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: September 7, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: George A. Melnik, Lucian R. Albu, Peter J. Janssen, Stefan Hausser, Joerg Spengler, Karl-Heinz Kraft
  • Liquid crystal display device having uniform integrated spacers
    Publication number: 20040075785
    Abstract: A reflective liquid crystal display (LCD) device includes a plurality of openings patterned in the pixel metal layer in the peripheral region of the device exposing the insulating layer beneath, a plurality of light-shielding islands beneath the openings in the pixel metal layer, and a plurality of walls formed on the islands surrounding the openings and extending substantially between the islands and the pixel metal layer. A plurality of spacers are disposed on the exposed portions of the insulating layer in the peripheral region for supporting the transparent (e.g., glass) layer above and providing a space for the liquid crystal material. The structure enhances display uniformity by making the spacers formed in the peripheral area more closely match the spacers formed in the pixel area of the device.
    Type: Application
    Filed: October 15, 2003
    Publication date: April 22, 2004
    Inventors: George A. Melnik, Lucian R. Albu, Peter J. Janssen, Stefan Hausser, Joerg Spengler, Karl-Heinz Kraft
  • Liquid crystal display device having uniform integrated spacers
    Patent number: 6642986
    Abstract: A reflective liquid crystal display (LCD) device includes a plurality of openings patterned in the pixel metal layer in the peripheral region of the device exposing the insulating layer beneath, a plurality of light-shielding islands beneath the openings in the pixel metal layer, and a plurality of walls formed on the islands surrounding the openings and extending substantially between the islands and the pixel metal layer. A plurality of spacers are disposed on the exposed portions of the insulating layer in the peripheral region for supporting the transparent (e.g., glass) layer above and providing a space for the liquid crystal material. The structure enhances display uniformity by making the spacers formed in the peripheral area more closely match the spacers formed in the pixel area of the device.
    Type: Grant
    Filed: April 13, 2001
    Date of Patent: November 4, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: George A. Melnik, Lucian R. Albu, Peter J. Janssen, Stefan Hausser, Joerg Spengler, Karl-Heinz Kraft
  • Liquid crystal display device having light isolation structure
    Patent number: 6545731
    Abstract: A reflective liquid crystal display (LCD) device includes a wall substantially extending between a peripheral portion of a first metal layer (pixel metal layer) formed in the peripheral region of the device with a light shield portion of a second metal layer formed in the pixel region of the device. The structure prevents light from reaching the substrate in the peripheral region of the device. Portions of the second metal layer formed in the peripheral region of the device may therefore be used for signal routing.
    Type: Grant
    Filed: April 13, 2001
    Date of Patent: April 8, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: George A. Melnik, Lucian R. Albu, Peter J. Janssen, Stefan Hausser, Joerg Spengler, Karl-Heinz Kraft
  • Liquid crystal display device having uniform integrated spacers
    Publication number: 20020149734
    Abstract: A reflective liquid crystal display (LCD) device includes a plurality of openings patterned in the pixel metal layer in the peripheral region of the device exposing the insulating layer beneath, a plurality of light-shielding islands beneath the openings in the pixel metal layer, and a plurality of walls formed on the islands surrounding the openings and extending substantially between the islands and the pixel metal layer. A plurality of spacers are disposed on the exposed portions of the insulating layer in the peripheral region for supporting the transparent (e.g., glass) layer above and providing a space for the liquid crystal material. The structure enhances display uniformity by making the spacers formed in the peripheral area more closely match the spacers formed in the pixel area of the device.
    Type: Application
    Filed: April 13, 2001
    Publication date: October 17, 2002
    Inventors: George A. Melnik, Lucian R. Albu, Peter J. Janssen, Stefan Hausser, Joerg Spengler, Karl-Heinz Kraft
  • Liquid crystal display device having light isolation structure
    Publication number: 20020149718
    Abstract: A reflective liquid crystal display (LCD) device includes a wall substantially extending between a peripheral portion of a first metal layer (pixel metal layer) formed in the peripheral region of the device with a light shield portion of a second metal layer formed in the pixel region of the device. The structure prevents light from reaching the substrate in the peripheral region of the device. Portions of the second metal layer formed in the peripheral region of the device may therefore be used for signal routing.
    Type: Application
    Filed: April 13, 2001
    Publication date: October 17, 2002
    Inventors: George A. Melnik, Lucian R. Albu, Peter J. Janssen, Stefan Hausser, Joerg Spengler, Karl-Heinz Kraft