Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
2007-12-25
2007-12-25
Ward, Jessica (Department: 1733)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C156S285000, C156S295000, C156S382000
Reexamination Certificate
active
10803400
ABSTRACT:
A first substrate (11a) is positioned on a support surface (7) in a vacuum chamber with an upward-facing first bonding surface (12a) spin-coated with adhesive while a second substrate (11b) is held with downward-facing second bonding surface (12b) to a cover (3) by suction. While the vacuum chamber is being evacuated to a pressure of between 0.1 mbar and 2 mbar, a support pin (9) is extended through central openings (14a, 14b) of the substrates (11a, 11b) and then retracted with the second substrate (11b) released from the cover (3) and carried by radially extended balls (10). The support pin (9) is lowered to a position where the balls (10), acting against the first bonding surface (12a), deform the first substrate (11a). The first bonding surface (12a) being therefore slightly concave, the first and second bonding surfaces (12a, 12b) only touch close to their circumferences. Retraction of the balls (10) causes a spreading of the contact area radially inwards to cover the first and second bonding surfaces (12a, 12b) without entrapment of non-bonded areas. The substrates (11a, 11b) are then lifted by the support pin (9) with again extended balls (10) and pressed against the cover (3) and the vacuum chamber is aired.
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On-line translation of JP 2003-006940 to Noriaki.
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Eisenhammer Thomas
Ou-Yang Jeff
OC Oerlikon Balzers AG
Pearne & Gordon LLP
Ward Jessica
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