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Solar Cell

Stencil



It’s applied in semiconductor industry. Our developed stencil for printing has a lot of advantages that the traditional mask doesn't have.

Item
Specification
Thickness
20 ~ 150um
Stencil open
Board Thickness (20um) Min. Dia: 40um
Board Thickness (150um) Min. Dia: 300um
Position Accuracy <30um (200 x 200mm Board)
Wall Roughness <2um
Taper 80~90°

 
Stencil
Wire net
Shape of holes
Round
Oblique rhombus
Comparison
Less obstructed paste, and less wasted paste The acute angle obstructed paste easily and cause the waste
Flexible
Comparison
Suitable flexibility can perform well when stretching the stencil The over-flexibility of wire net causes the difficulty to control the scraper pressure and make improper bounce
Thickness of stencil
15um ~ 150um
> 20um
Comparison
All the holes are on the same surface, and this make the thinner stencil possible The wire have to lie over each other, and cause the difficulties in producing thinner wire net
Density of opening holes
Max: 15000 holes/cm2
500~600mesh