Manufacturing method of roller for manufacturing patterned retarder film
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United States of America Patent
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Nov 18, 2014
Grant Date -
Jan 17, 2013
app pub date -
May 30, 2012
filing date -
Jul 11, 2011
priority date (Note) -
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Abstract
A method for producing a roller used for manufacturing a retarder film is provided. The method includes providing the roller having a roller surface; providing an embossing tool having an embossing end and embossing the roller surface with the embossing tool. The embossing end has a plurality of first microgroove structures and second microgroove structures. The first and second micro-groove structures are both parallel structures. Each one of the first microgroove structures is symmetric to each one of the second microgroove structures with respect to a symmetry line. An included angle of the symmetry line between each first micro-groove structure and that between each second micro-groove structure are 45±8 degrees.
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