印章结构对微接触印刷制备导电网格的影响

发布时间：2018-08-30 09:45

【摘要】：为了在PET基底上制备精细的透明网格状导电图案,本工作利用微接触印刷高精度的优势,分别采用线条结构和网格结构的印章转印银纳米粒子导电油墨,分析了其转印过程,并讨论了印章结构对网格图案性能的影响。结果表明:采用线条结构的印章可真实还原印章设计尺寸,避免了线条的扩展,有利于提高网格图案的透光率;同时,在交叉处墨层较厚可提高导电性。而采用网格结构印章可一次转移快速获得网格图案,但由于印章网格上相邻线条之间液桥的形成会使图案线宽增加,降低其透光率;采用间距较大的印章可使液桥断裂,得到边缘光滑的网格图案,但间距增大导致单位面积导电路径减少,降低其导电性。总之,采用线条结构印章有利于获得性能较好的网格图案,但两次转移过程相对复杂,需用时间较长。
[Abstract]:In order to prepare fine transparent grid conductive patterns on PET substrate, the transfer printing process of silver nanoparticles conductive ink was analyzed by using the advantages of microcontact printing with high precision, respectively, using the seal transfer silver nanoparticles conductive ink with line structure and grid structure. The influence of seal structure on the performance of grid pattern is also discussed. The results show that the seal with line structure can truly restore the design size of seal, avoid the expansion of lines, and improve the transmittance of grid pattern, and at the same time, the thickness of ink layer at the intersection can improve the electrical conductivity. The grid pattern can be obtained quickly by using the grid seal. However, because of the formation of the liquid bridge between the adjacent lines on the seal grid, the width of the pattern line will be increased and the transmittance of the pattern can be reduced, and the liquid bridge can be broken by using the seal with large spacing. The grid pattern with smooth edges is obtained, but the increase of the spacing leads to the decrease of the conductive path per unit area and the decrease of its conductivity. In a word, the use of line seal is helpful to obtain better mesh pattern, but the two-time transfer process is relatively complex and takes a long time.
【作者单位】：北京印刷学院印刷与包装工程学院北京市印刷电子工程技术研究中心;
【基金】：国家自然科学基金(21403014,61474144) 北京印刷学院校级一般科研项目(Eb201501);北京印刷学院重点项目(Ea201501) 绿色印刷与出版技术协同创新中心(2011) 北京高等学校高水平人才交叉培养实培计划~~
【分类号】：TN05

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