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Method and apparatus for injecting liquid into display device cell

  • US 4,753,276 A
  • Filed: 05/19/1987
  • Issued: 06/28/1988
  • Est. Priority Date: 05/19/1987
  • Status: Expired due to Term
First Claim
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1. A method of injecting a liquid into a display device cell having an inlet opening, the method comprising the steps of:

  • (a) connecting one end of the tube to said inlet opening of the display device cell and placing a vessel containing said liquid and the cell in a chamber such that said inlet opening is in an uppermost section of the cell, the other end of said tube being left open to the atmosphere in said chamber;

    (b) replacing air present in said chamber by an inactive gas and thereafter purging said inactive gas from said chamber to thereby create a vacuum in said chamber; and

    (c) after step (b) submerging said other end of said tube in said liquid in said vessel and introducing an inactive gas into said chamber while controlling the rae of a rise in the gas pressure in said chamber up to the atmospheric pressure to thereby control the rate of injection of said liquid into the cell through said tube and varying the level of a surface of said liquid in said vessel so as to keep said level of the liquid susrface in said vessel higher than the level of a surface of said liquid within the cell.

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