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Apparatus and method for solder-sealing an active matrix organic light emitting diode

  • US 6,608,283 B2
  • Filed: 02/08/2001
  • Issued: 08/19/2003
  • Est. Priority Date: 02/08/2000
  • Status: Expired due to Term
First Claim
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1. An apparatus for sealing at least one organic light emitting diode device located on a substrate with at least one cover assembly, said apparatus comprising:

  • (a) a chuck assembly for receiving said substrate, wherein said chuck assembly comprises at least one heat sink aligned with said at least one organic light emitting diode device and wherein said at least one organic light emitting diode device is surrounded by a first sealing band and a second sealing band located on said substrate and separated by a gap, wherein said first sealing band is closer to said at least one organic light emitting diode device than said second sealing band;

    (b) a pick-up assembly for receiving said at least one cover assembly, comprising;

    (i) a base assembly having a bottom surface and a top surface, each of which is parallel to said substrate in said chuck assembly, said base assembly comprising (1) at least one recess in said bottom surface for receiving said at least one cover assembly, (2) at least one aperture through said base assembly from said at least one recess to said top surface through which a vacuum is applied to hold said at least one cover assembly in said at least one recess, and (3) at least one heat sink on said top surface, wherein said at least one cover assembly comprises a face plate having a periphery and a flange assembly around said periphery, said flange assembly having a first portion that is secured to the face plate, a second portion having secured thereto a solder pre-form that is aligned with said first sealing band on said substrate, and an intermediate portion connecting said first and second portions; and

    (ii) a means for applying pressure to said aligned solder pre-form and first sealing band; and

    (c) a laser beam projected through said chuck assembly.

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