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Method of forming a thin film pattern with a trapezoidal cross section










Image Number 6 for United States Patent #5127989.

The present invention provides a method of forming a thin film pattern with a trapezoidal cross section. In this method, a resist pattern with an inverted-trapezoidal cross section is formed on a thin film. Using the resist pattern with the inverted-trapezoidal cross section as a mask, the thin film is dry-etched. A resist pattern is left with the resist pattern used as a mask. The resist pattern has a trapezoidal cross section.








 
 
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