Simple maskless lithography tool with a desk-top size using a liquid-crystal-display projector
A maskless exposure system was developed utilizing a commercial LCD video-projector. Only the projection optics was changed to a camera lens for macro-photography. The system is very simple, and has a small desk-top size of 300400500mm3. Patterns with a minimum width of 14?m were smoothly printed in 14.310.7mm2 field. The new lithography tool was fabricated by an expenditure of only 500,000?3500.
maskless lithography projector exposure tool projection exposure liquid crystal display desk top