| 摘要 |
An apparatus and method are provided for sealing a light imaging array and scintillator of an imaging device which prevents light or moisture from entering the sealed cavity while controlling the lateral expansion of the epoxy material during construction. The seal is formed by dispensing a bead of epoxy around substantially the entire perimeter of the active imaging array and scintillator, leaving a slight gap therein. A cover plate is then placed over the scintillator and imaging array to protect against light or moisture entering the sealed cavity from the side of the substrate that is sealed. As the cover plate is attached, it compresses the epoxy. During compression, pressure builds within the sealed cavity. However, the pressure is allowed to escape through the gap in the epoxy bead. The pressure release lowers the outward force against the epoxy bead, which in turn limits the lateral expansion of the epoxy. The gap is then filled with epoxy by using a syringe that is inserted into the gap and withdrawn as the epoxy is dispensed, thereby enclosing the sealed cavity.
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