Patent ID: 6740145
Filing Date: 2004-05-25
Classification: F26B,H01L

Abstract:
A desiccant package useable for protecting highly moisture-sensitive electronic devices sealed within an enclosure, comprising:a) a moisture-permeable container which can be positioned in the sealed enclosure; b) solid water absorbing particles of one or more materials disposed in the moisture-permeable container; c) said solid water absorbing particles including solid particles of one or more materials, at least one of such materials having an average particle size in a range of 0.001 to less than 0.1 micrometers to provide a high rate of water absorption and to provide an equilibrium minimum humidity level lower than a humidity level to which the device is sensitive within the sealed enclosure; and d) said moisture-permeable container essentially maintains the moisture absorption rate of the solid water absorbing particles contained therein, the moisture-permeable container acting to separate the solid water absorbing particles from the highly moisture-sensitive device.