发明授权
US5734145A Laser marking method using laser heated liquid crystal mask 失效
激光打标法采用激光加热液晶面罩

Laser marking method using laser heated liquid crystal mask
摘要:
A method of driving a liquid crystal mask marker increases a marking speed, by reducing the time required for producing an image, and maintains marking accuracy at a high level. For this purpose, a laser beam (L11) is irradiated onto a non-light-permeable portion, such as a non-light-permeable surface and/or a non-liquid-crystal surface, of a liquid crystal mask (8), for example, a liquid crystal electrode member (81), before the liquid crystal mask completes the production of an image when the image is produced on the liquid crystal mask (8).
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