Investigation of DLP projector as an energy light source to cure silver conductive ink
Conductive ink has been widely used in many application of electronic parts. It normally comes in liquid form and will need to be cured usually by conventional oven or laser irradiation after it is drawn to expose its metallic contents. But, these curing processes suffer from numerous problems consi...
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| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Published: |
2014
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/6382/ http://eprints.uthm.edu.my/6382/1/155.pdf |
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| Summary: | Conductive ink has been widely used in many application of electronic parts. It normally
comes in liquid form and will need to be cured usually by conventional oven or laser irradiation
after it is drawn to expose its metallic contents. But, these curing processes suffer from numerous
problems consist of laser is a costly process and a warping defect when cured using conventional
oven. Thus, alternative process is prominent and DLP projector has been seen capable of
polymerised photopolymer materials. By making use of its potential associated with a proper control
of the light intensity, exposure time and distance, it could provides sufficent heat to cure conductive
ink. This study investigates the curing process of silver conductive ink on polymer substrate using
DLP projector light with a variation of curing time and distance. Electrical resistance, hardness and
adhesion level of cured sample were measured to determine its functionality. The conductive ink is
deposited on the substrate using doctor blade method and Microsoft Powerpoint slide is used to
shape the light image produced by the projector. It was found that the conductivity and curing level
of the sample cured were higher at the distance which getting the sharpest light image. The
performances of the samples were also greater as the curing time increased. DLP projector is able to
cure the conductive track efficiently with shorter curing time apart from the cheap preparation and
setup cost |
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