发明名称 |
Method of preparing a circuit utilizing a liquid crystal artwork master |
摘要 |
A method of forming a circuit mask is disclosed. The method comprises selectively heating a portion of a cell comprising a liquid crystal above the transition temperature of the liquid crystal material to render the portion capable of scattering a desired radiant energy. An artwork master is thus formed having a pattern delineated therein capable of transmitting the desired radiant energy therethrough. A member having a surface sensitive to the desired radiant energy is positioned in a desired spatial relationship with the master. The master is exposed to the desired radiant energy whereby the radiant energy is transmitted through the pattern to expose at least a portion of the sensitive surface thereto. The exposed sensitive surface is treated to form the circuit mask having a pattern capable of transmitting light therethrough.
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申请公布号 |
US4013466(A) |
申请公布日期 |
1977.03.22 |
申请号 |
US19750590766 |
申请日期 |
1975.06.26 |
申请人 |
WESTERN ELECTRIC COMPANY, INC. |
发明人 |
KLAIBER, ROBERT JAMES |
分类号 |
G02F1/133;G03F7/20;H05K3/00;(IPC1-7):G03C5/00;G03C5/04 |
主分类号 |
G02F1/133 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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