Digital Light Processing: A Review on the Printing Resolution and the Materials Options

Digital light processing (DLP) is a 3D printing technology that utilises a patterned light field to print 3D objects layer by layer, with fine features and reasonable scales. Due to the requirements in terms of functionalities, there are critical needs to print structures with finer features and broader materials options. This review focuses on the factors that are limiting these two perspectives. Techniques and recent progress to overcome challenges will be discussed as well. In the end, a brief outlook is given to motivate future research of DLP.