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Hermetically sealed glass package and method of manufacture

  • US 8,375,744 B2
  • Filed: 11/27/2006
  • Issued: 02/19/2013
  • Est. Priority Date: 12/06/2005
  • Status: Expired due to Fees
First Claim
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1. A method for manufacturing a hermetically sealed package comprising:

  • traversing a closed path over a surface of a glass assembly comprising first and second glass plates with a laser beam to heat a frit disposed between the first and second plates, wherein traversing the closed path comprises the steps of;

    a) providing the laser beam at an initial laser power that is insufficient to heat the frit to form a hermetic seal;

    b) increasing the laser power from the initial laser power at a first location to a target laser power at a second location downstream from the first location relative to a direction of the traverse about the closed path, wherein the target laser power is at least sufficient to cause the frit to form a hermetic seal;

    c) maintaining the laser beam at the target laser power while the laser beam completes traversing the closed path to the first location;

    d) maintaining the laser beam at the target laser power while the laser beam continues to traverse downstream past the first location to a third location downstream from the first location relative to the direction of traverse; and

    thene) decreasing the laser power from the third location until the laser power is insufficient to heat the frit to form a hermetic seal at a fourth location, a predetermined distance downstream from the third location relative to the direction of traverse, wherein the heating melts the frit and seals the glass assembly to form a hermetically sealed package.

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