| 摘要 |
A pattern forming method of the present invention includes the steps of forming, on a substrate before droplets are ejected onto the substrate, a water repelling area, in which a contact angle between the droplet and the target surface is a first contact angle, and a water attracting line, which is adjacent to the water repelling area and in which a second contact angle is smaller than the first contact angle and which is to be the pattern to be formed; and landing droplets onto the target surface such that part of the droplet landed is in a water repelling area and part of the droplet landed is in a water attracting line, the equation ( 1 ) is satisfied, <?in-line-formulae description="In-line Formulae" end="lead"?>D<=LX{1+2(cos theta<SUB>2</SUB>-cos theta<SUB>1</SUB>)} ( 1 ) <?in-line-formulae description="In-line Formulae" end="tail"?> where D is a droplet diameter, L is a pattern width, theta<SUB>1 </SUB>is a first contact angle, and theta<SUB>2 </SUB>is a second contact angle. By decreasing the number of discharged droplets, it is possible to prevent increase of a tact time and decrease of an inkjet operating life.
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