Abstract: The present invention relates to a method of manufacturing a stamper for replicating a high density relief structure, the method comprising the steps of: providing a master substrate (10) comprising a substrate layer (12) and a recording stack overlying the substrate layer, the recording stack comprising a mask layer (14) and an interface layer (16) between the mask layer and the substrate layer, and the mask layer comprising a phase transition material, projecting a laser beam onto selected regions (20) of the mask layer, thereby inducing a heat-related phase transition for changing the properties of the selected regions of the mask layer with respect to chemical agents, applying a chemical agent to the mask layer for removing the selected regions of the mask layer, thereby uncovering regions (22) of the interface layer, and plasma etching the recording stack, thereby forming pits (24) in the uncovered regions of the interface layer. The present invention further relates to a stamper and an optical disc.

Abstract: The present invention relates to a method for controlling a dual-beam LBR (Laser Beam Recorder) (56) suitable for mastering a record carrier (60) by writing data in the record carrier in circular or spiral tracks and comprising: means (58) for rotating a record carrier; means (62) for moving a dual-beam laser (61) over the record carrier (60) in a radial direction with reference to the rotation of the record carrier (60); means (65) for controlling the dual-beam laser output power; and means (66) for synchronizing the rotation of the record carrier (60), the movement of the dual-beam laser (61) and the dual-beam laser output power. In accordance with the invention synchronizing the rotation of the record carrier 60; the movement of the dual-beam laser 61 and the dual-beam laser output power is performed such that at least a part of the data is written in at least one track comprising a different arrangement than circular or spiral.

Abstract: In a method of manufacturing a display device, a substrate is provided with a pattern of barrier ribs of frit material by moving a squeegee across a substrate. The barrier ribs extend in a longitudinal direction and have a predefined profile in cross-section which is perpendicular to the longitudinal direction. A contact portion of the squeegee has grooves which correspond in cross-section to the predefined cross-sectional profile of the barrier ribs.