Methods for encapsulating electronic devices

Details Methods for encapsulating electronic devices Methods for encapsulating electronic devices

1993-08-06

1994-09-20

Hearn, Brian E.

Fishing, trapping, and vermin destroying

437210, 437211, 437219, 148DIG17, 134 1, H01L 2160

Patent

active

053489136

ABSTRACT:
In a preferred embodiment of the invention, a substrate (11) is cleaned by immersing it in an organic solvent (17) and subjecting it to acoustic energy, immersing it in alcohol, immersing it in a surfactant, subjecting it to a cascading rinse in deionized water, baking it (FIG. 3 ), and thereafter subjecting it to ultraviolet light in an ozone ambient (FIG. 4). When the foregoing steps are followed, the contact angle is significantly reduced, and an encapsulant (14) that is thereafter applied provides more reliable protection to an encapsulated device (12) from outside contaminants.

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