Abstract: A method includes placing a work piece in an apparatus containing first support structure and a second support structure such that the work piece is located between the first support structure and the second support structure, generating a pressure on a portion of the work piece by actuating a movable member that presses on the work piece from a first side of the work piece to generate a first force on a first side of the work piece that presses a second side of the work piece against an optically transparent mechanical stop, and directing laser radiation through the optically transparent mechanical stop to irradiate the portion of the work piece.

Abstract: A method of transferring light-emitting diodes (LEDs) may include: placing a backplane on a backing board, wherein a sealing member is located around a periphery of the backplane; placing a plurality of first LED coupons on the backplane; placing a transparent panel on the sealing member and over the plurality of first LED coupons, such that a space is formed between the backing board and the transparent panel; drawing a vacuum on the space such that the transparent panel presses the plurality of first LED coupons toward the backplane; and directing laser radiation through the transparent panel to irradiate the plurality of first LED coupons located on the backplane.

Abstract: An apparatus for transferring light-emitting diodes (LEDs) includes a backing board for supporting a backplane, a sealing member formed on the backing board around a periphery of the backplane, a transparent panel formed on the sealing member such that a space is formed between the backing board and the transparent panel, and a vacuum source for drawing a vacuum on the space.

Abstract: An apparatus for transferring light-emitting diodes (LEDs) includes a backing board for supporting a backplane, a sealing member formed on the backing board around a periphery of the backplane, a transparent panel formed on the sealing member such that a space is formed between the backing board and the transparent panel, and a vacuum source for drawing a vacuum on the space.