Abstract: Embodiments of the present disclosure generally relate to lithography systems. More particularly, embodiments of the present disclosure relate to a method, a system, and a software application for a lithography process to control transmittance rate of write beams and write gray tone patterns in a single exposure operation. In one embodiment, a plurality of shots are provided by an image projection system in a lithography system to a photoresist layer. The plurality of shots exposes the photoresist layer to an intensity of light emitted from the image projection system. The local transmittance rate of the plurality of shots within an exposure area is varied to form varying step heights in the exposure area of the photoresist layer.

Abstract: A laser direct imaging system includes a stage, a laser device and an oxygen-reducing device. The stage is subjected to an atmospheric pressure. The laser device is configured to provide a laser beam to scan across the substrate. The oxygen-reducing device operates simultaneously with the laser device for outputting an inert gas only to a specific area where the laser beam is being aimed such that any portion of the substrate, if enters the specific area, will be exposed to the laser beam under a low-oxygen environment.

Abstract: A laser direct imaging system includes a stage, a laser device and an oxygen-reducing device. The stage is subjected to an atmospheric pressure. The laser device is configured to provide a laser beam to scan across the substrate. The oxygen-reducing device operates simultaneously with the laser device for outputting an inert gas only to a specific area where the laser beam is being aimed such that any portion of the substrate, if enters the specific area, will be exposed to the laser beam under a low-oxygen environment.