Research of paste transition to substrate in LTCC-technology

Abstract

Abstract. The electronics development demands for accuracy of printed technologies, in particular, to screen printing. Under a flat blade operation the print form is deformed and the image is distorted relative to the original. A squeegee in a form of a smooth cylinder reduces distortion, but it allows obtaining satisfactory print quality only when using high density grids. The paper shows findings of using roller squeegee with dosed ink supply. The roller squeegee is provided with an elastic layer. Dosage is carried out due to the cells on the elastic layer surface. There were used meshes 100-31 and 120-34 for the stencil. The experiments were carried out with layers of photopolymers and rubber. The carried out calculations made possible to choose the optimum printing pressure. Under the selected conditions, the printed image had minimal distortion. The findings allow drawing a conclusion about the possibility of roller squeegee using in chips manufacture according to LTCC-technology.

Method of Calculating the Dosing Device of the Ink Machine of the Stencil Machine

“…В качестве развития применения валковых ракелей предложено использовать валковый ракель с упругой ячеистой покрышкой [9]. В работе [10] рассмотрен процесс перехода пасты на поверхность заготовки LTCCмикросхем при использовании валика с упругой ячеистой поверхностью. Количество краски на оттиске напрямую зависит от ее количества в ячейках упругой покрышки.…”