Working table low-speed motion control method and system applied to DMD system

Abstract

The invention discloses a working table low-speed motion control method applied to a DMD system. The working table low-speed motion control method comprises the following steps of uploading all monochrome bitmaps in a monochrome sequence file path into a DMD board card memory in sequence, displaying a monochrome bitmap stored in a memory of the DMD board card on the DMD panel, enabling a motion controller to read polarization angle data in a memory of the motion controller, and controlling an electric adjustable polaroid to rotate to a specified angle, enabling the motion controller to control a pulse light source switch to form primary exposure, and enabling the workbench to move to a designated position corresponding to the next two-dimensional physical coordinate until the two-dimensional physical coordinate points of the whole large-format processing graph are executed. Precise control of the movement of the workbench is realized, and the advantages of large exposure area, high efficiency and good reliability are realized.

Description

technical field [0001] The invention relates to the field of liquid crystal orientation alignment control, in particular to a low-speed motion control method and system applied to a DMD system workbench. Background technique [0002] The polarization orientation technology based on the liquid crystal spatial modulator is a programmable control device that can modulate the phase and amplitude of the incident light. A single projection orientation can realize the pattern recording of different orientations of liquid crystals in different selected areas. [0003] Photo-controlled alignment is a newly developed non-contact liquid crystal alignment method, which uses photosensitive materials to undergo directional photocrosslinking, isomerization or photocleavage reactions under ultraviolet or blue polarized light irradiation to obtain the required alignment. At present, there are four types of optical alignment technology: mask overlay polarization pattern technology, periodic l...

AI Technical Summary

Problems solved by technology

[0004] Based on the DMD-based dynamic mask photo-orientation technology, by refreshing the intensity distribution map on the DMD, the required mask pattern can be quickly generated without the need for physical production The new mask plate makes it easier to achieve orientation distribution in various shapes, but still uses the method of mechanically rotating the linear polarization film to control the polarization direction of light, so multiple exposures are still required to complete the optical orientation of complex patterns

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