New inks for the direct drop-on-demand fabrication of polymer lenses

The advent of cell phone cameras extensively pushed market needs for micro lenses and supported developments like the Wafer-Level-Camera Technology [1]. Different optical applications and patterning methods for micro lenses require different sets of materials. Micro ink-jet printing (micro IJP) is a...

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Bibliographic Details
Published in:Microelectronic engineering 2011-08, Vol.88 (8), p.2174-2179
Main Authors: Voigt, A., Ostrzinski, U., Pfeiffer, K., Kim, J.Y., Fakhfouri, V., Brugger, J., Gruetzner, G.
Format: Article
Language:English
Subjects:
Applied sciences
Cameras
Ceramics
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Electronics
Epoxy resin
Exact sciences and technology
Geometry
Ink
Ink-jet printing
Inks
Lenses
Markets
Materials science
Materials synthesis
materials processing
Microelectronic fabrication (materials and surfaces technology)
Optical properties
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
Patterning
Physics
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Shape tuning
Sol gel process
Sol-gel
Surface treatment
Surface treatments
Two materials
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Summary:The advent of cell phone cameras extensively pushed market needs for micro lenses and supported developments like the Wafer-Level-Camera Technology [1]. Different optical applications and patterning methods for micro lenses require different sets of materials. Micro ink-jet printing (micro IJP) is an alternative and innovative direct patterning method for the manufacture of micro optical systems. We demonstrate the development of two material compositions – an epoxy resin and a sol–gel based material – which are used as inks with physical parameters adapted to the patterning technique so that stable and reproducible drops in both continuous and drop-on-demand (DoD) mode can be generated. The manufacturing of micro lenses, the lens characterization, their geometry and their optical properties are presented.
ISSN:0167-9317
1873-5568
DOI:10.1016/j.mee.2010.12.004