Patent ID: 6749690
Filing Date: 2004-06-15
Classification: C23C,H01L

Abstract:
An alignment device for permitting a deposition mask having a plurality of mask segments to be positioned relative to a substrate to facilitate simultaneous deposition of organic material onto the substrate which will be part of an organic light emitting device, comprising:(a) a base having a first set of alignment pins and a second set of alignment pins; (b) a series of spaced apart plate segments secured to the base; (c) a frame having openings aligned with the spaced apart plate segments, the frame being formed with a first set of alignment pin receiving holes corresponding to the position of the first set of alignment pins to permit the frame to be removably mounted to the base surrounding each of the plate segments; (d) the frame defining cross bar receiving channels; (e) a magnetic cross bar disposed in the cross bar receiving channels; (f) a plurality of magnetic mask segments positioned on the plate to define the deposition mask so that when the frame is mounted to the base the magnetic field from the magnetic cross bar secures portions of the magnetic mask segments to the frame; (g) a transparent flat plate contacting the second set of alignment pins and the deposition mask and being sized to expose segments of the deposition mask; and (h) means for securing the magnetic mask segments to the perimeter of the frame.