01005型MLCC关键制备工艺研究
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摘要
为了提高01005型多层陶瓷电容器(MLCC)的切割合格率,对丝印、叠层等关键制备工艺进行了研究。通过试验发现:要获得良好的超小尺寸内电极印刷质量,有必要采用高目数的丝网,还可以适当地缩减电极图案区域以减少电极图案变形。采用具有辅助图案的丝网在介质膜片上印刷内电极,叠层后内电极对位可以满足精度要求。层压需要选择合适的压力和升压速率,防止膜坯巴块发生内部滑移和变形。上述关键工艺的优化为提高01005型MLCC的切割合格率提供了良好的前提条件。
In order to raise qualified rate of 01005-format multi-layer ceramic capacitors(MLCCs) after cutting,key processes such as silk screen printing,stacking and so on were studied.It has been found by experiment that it is necessary to adopt silk screen with high mesh number to acquire good quality of ultrasmall electrode printing.Deformation of electrode pattern can be lessened by properly narrowed range of electrode pattern area.Alignment of electrodes can meet the precision demands after stacking by adopting silk screen with assistant pattern to print electrodes on dielectric tapes.To avoid slippage and deformation in green-pressing,selection of proper pressure and pressure rise rate is necessary.Optimization of key processes mentioned above provides good preconditions for raising qualified rate of 01005-format MLCCs.
In order to raise qualified rate of 01005-format multi-layer ceramic capacitors(MLCCs) after cutting,key processes such as silk screen printing,stacking and so on were studied.It has been found by experiment that it is necessary to adopt silk screen with high mesh number to acquire good quality of ultrasmall electrode printing.Deformation of electrode pattern can be lessened by properly narrowed range of electrode pattern area.Alignment of electrodes can meet the precision demands after stacking by adopting silk screen with assistant pattern to print electrodes on dielectric tapes.To avoid slippage and deformation in green-pressing,selection of proper pressure and pressure rise rate is necessary.Optimization of key processes mentioned above provides good preconditions for raising qualified rate of 01005-format MLCCs.
引文
[1]李鸿刚,卓金丽,陆亨.01005规格MLCC电容量异常偏低的研究[J].电子工艺技术,2017,38(3):168-170.
[2]卓金丽,陆亨,安可荣.中压高容MLCC的设计及性能[J].电子工艺技术,2016,37(3):157-159.
[3]彭自冲,李筱瑜,刘新.丝网网版对MLCC印刷的影响[J].丝网印刷,2012(4):36-38.
[4]李筱瑜,陈长云,祝忠勇.MLCC超小型片式多层陶瓷电容器内电极印刷工艺研究[J].电子质量,2011(6):1-3.
[2]卓金丽,陆亨,安可荣.中压高容MLCC的设计及性能[J].电子工艺技术,2016,37(3):157-159.
[3]彭自冲,李筱瑜,刘新.丝网网版对MLCC印刷的影响[J].丝网印刷,2012(4):36-38.
[4]李筱瑜,陈长云,祝忠勇.MLCC超小型片式多层陶瓷电容器内电极印刷工艺研究[J].电子质量,2011(6):1-3.