A liquid crystal photomask, its application and plate making device

Abstract

A liquid crystal photomask, its application and a plate making device. The photomask includes an imaging controller, a light guide layer, a first optical deflector, a liquid crystal layer and a second optical deflector; the liquid crystal layer is sandwiched between the first optical deflector and the second optical deflector; A first transparent electrode layer is arranged on the surface of the first optical deflection plate in contact with the liquid crystal layer; a second transparent conductive layer is provided on the surface of the second optical deflection plate in contact with the liquid crystal layer; the first optical deflection plate and the second The included angle of the polarization directions of the optical deflector is 90 degrees; the light guide layer is arranged on the light incident side of the first optical deflector. The invention provides a liquid crystal photomask that realizes multi-mask overprinting without changing masks, has high precision, can be adjusted, has good stability and can work for a long time, and is used in plate making to replace film.

Description

technical field [0001] The invention relates to a photomask and relates to a wide range of printing fields, in particular to a liquid crystal photomask, its application and a plate-making device. Background technique [0002] In a wide range of printing fields, including commonly referred to as printing plate printing, circuit printing, photolithography and other fields, photomasks are an important part of them. With the development of laser plate making, electron beam direct writing and other technologies, the research focus has gradually shifted to the field of direct plate making. In contrast, the research on plate making printing or exposure imaging relying on masks is relatively lagging behind. However, in terms of market share In terms of wide application and wide application, mask printing is still the top priority of related industries. Therefore, solving the related problems in traditional plate making is the key to cracking the decline of the industry and striving ...

AI Technical Summary

Problems solved by technology

[0009] According to the above existing technologies, it can be known that using liquid crystal panels as masks has many advantages. However, according to the existing technologies, when it is applied to actual production, there is often a large deviation between the accuracy and the design accuracy, and it is difficult to debug the line width. Inaccurate accuracy, susceptible to temperature effects, long-term processing creep and other technical problems

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