Patent ID: 6837374
Filing Date: 2005-01-04
Classification: H01L,Y10S

Abstract:
1. A combination pair of like shaped carriers and a film frame sandwiched therebetween, the film frame comprising a generally planar ring-shaped frame defining an open area and having an outer edge portion, and a film traversing the open area, the carriers comprising an upper carrier and a lower carrier, each of the carriers comprising: a raised peripheral portion defining a pocket for receiving the film frame, and a recessed central portion positioned below the film frame, the peripheral portion having an upper surface, an outwardly facing wall extending downwardly from the upper surface and an inwardly facing wall extending downwardly from the upper surface to the central portion, the outwardly facing wall having an outer ledge and terminating in a flange, the inwardly facing wall having an inner ledge positioned intermediate the upper surface and the central portion; the central portion comprising a central platform and a trough intermediate the central platform and the inwardly facing wall, the trough extending below the central platform, the upper carrier stacked on the lower carrier with the flange of the upper carrier contacting the ledge of the outwardly facing wall of the lower carrier and with the lower carrier having the edge portion of the frame of the film frame seated on its inner ledge and the trough of the upper carrier seated on top of the film frame with the only contact of the upper and lower carrier with the film frame being at said ledge and trough.