ZHAO Lu-bing, XU Jing, ZHONG Shao-long, et al. Research on Si-Si bonding technique with photosensitive BCB for MEMS devices[J]. 2014, 33(8): 48-51. DOI: 10.13873/j.1000-9787(2014)08-0048-04.
A kind of bonding technique with photosensitive benzo-cyclo-butene(BCB) is presented.In our experiments
by employing a kind of negative photosensitive BCB(XUS35078) and optimizing photolithography parameters
well-patterned BCB is obtained
then BCB bonding is carried out under particular temperature and pressure.Test shows that the BCB shows low flow characteristic and collapsing rate.The thickness of BCB photoresist after bonding is 11.6 μm
shear strength of each cell is 18 MPa
and hermeticity is better than 5.0 ×10-8atm· cm3/s He.This bonding process can be applied for production of MEMS devices which needs low temperature process and cannot bear high voltage.