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Introduction |
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TRUMASK ® is alkaline developable and Negative type
liquid photoresist ink for Inner layer ,
Lead frames and BGA.
The Characteristics of PHOTOMASTER |
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ㆍHigh resolution (1mil) patterning processes with high yields
(up to 99%)
ㆍExcellent resistance to alkaline etchants and acid etchants
ㆍExcellent rheological properties
ㆍHigh hardness
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Grade of PHOTOMASTER®
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ㆍPHOTOMASTER® ND-066
Liquid Photoimageable Etching Resist Ink for Dip
Coating Application
ㆍPHOTOMASTER® NR-027
Liquid Photoimageable Etching Resist Ink for
Roller Coating Application
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PROPERTIES of PHOTOMASTER®
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PROPERTY
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VALUE
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REMARKS
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Color
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Blue → Dark blue
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Unexposed → After exposure
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Pencil Hardness
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H → 3H
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Sensitivity
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7steps/stouffer21
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60mJ/cm2 |
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Resolution
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25/25 ㎛
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