Abstract: A method of controlling the sub-pixels in LCD screens in 3D printers is described for increasing the resolution of a printed 3D object. A stereolithographic 3D printer comprises an LCD screen comprising a plurality of pixels, each pixel comprising a plurality of sub-pixels; a 3D printing apparatus; a memory configured to store data representing a 3D object; and a processor. The resolution of the printed 3D objection is increased by dividing the 3D object represented by the data into a plurality of slices, mapping each slice of the 3D object to a pixel layout of the LCD screen, determining a proportion of each pixel that is contained within each slice of the 3D object, assigning illumination values to the sub-pixels of each pixel based on the determined proportion for the respective pixel for each slice, and controlling both the LCD screen in accordance with the assigned illumination values.

Abstract: A method of controlling the sub-pixels in LCD screens in 3D printers is described for increasing the resolution of a printed 3D object. A stereolithographic 3D printer comprises an LCD screen comprising a plurality of pixels, each pixel comprising a plurality of sub-pixels; a 3D printing apparatus; a memory configured to store data representing a 3D object; and a processor. The resolution of the printed 3D objection is increased by dividing the 3D object represented by the data into a plurality of slices, mapping each slice of the 3D object to a pixel layout of the LCD screen, determining a proportion of each pixel that is contained within each slice of the 3D object, assigning illumination values to the sub-pixels of each pixel based on the determined proportion for the respective pixel for each slice, and controlling both the LCD screen in accordance with the assigned illumination values.