Patent ID: 7817175

Claim:
A laser induced thermal imaging apparatus comprising: a substrate stage comprising a magnet and being adapted to receive an acceptor substrate and a donor film to be laminated to each other on the substrate stage, the acceptor substrate having a pixel region for forming a first sub-pixel, a second sub-pixel and a third sub-pixel, the donor film having an organic light emission layer to be transferred to the pixel region; a laser oscillator for irradiating a laser to the donor film; a contact frame between the substrate stage and the laser oscillator, the contact frame comprising a magnet configured to form a magnetic force with the magnet of the substrate stage for adhering the acceptor substrate and the donor film to each other between the substrate stage and the contact frame, the contact frame comprising a first frame having a first opening through which the laser passes to fault the first sub-pixel, a second frame having a second opening through which the laser passes to form the second sub-pixel, and a third frame having a third opening through which the laser passes to form the third sub-pixel; and a contact frame feed mechanism for moving the contact frame in a direction of the substrate stage, wherein the magnet of the substrate stage comprises a plurality of electromagnets arranged in a pattern of substantially concentric circles.