Patents Examined by Nap Thantu
  • Patent number: 4822143
    Abstract: An arrangement to produce pictures using light polarized in different directions consists of a picture tube to whose faceplate a polarizer film and a polymer liquid crystal film provided on both sides with transparent conductive layers are joined with a transparent adhesive. By using a polymer liquid crystal film, the arrangement can also be realized on picture tubes having curved faceplates. The polarizer film and the polymer liquid crystal film are joined together preferably by laminating, and the laminate is joined to the faceplate with an adhesive. The polymer liquid crystal film preferably contains a ferroelectric liquid crystal material.
    Type: Grant
    Filed: October 21, 1987
    Date of Patent: April 18, 1989
    Assignee: Nokia Graetz GmbH
    Inventor: Rolf Zondler
  • Patent number: 4820025
    Abstract: A pair of substrates are opposed to each other and the peripheral portions thereof are sealed by a sealing member. A part of the sealing member is opened so as to constitute a liquid crystal injection hole. A groove for introducing a liquid crystal is provided on the inner surface of at least one of the substrates in such a manner as to lead from the injection hole to the inner surface of the cell.
    Type: Grant
    Filed: January 12, 1987
    Date of Patent: April 11, 1989
    Assignee: Alps Electric Co., Ltd.
    Inventor: Jun Nakanowatari