Murata Manufacturing Co., Ltd.

Akiyoshi Kawamura

Osamu Chikagawa

Takako Sato

Takayuki Tsukizawa

Tetsuya Ikeda

Takaki Murata

A method is provided for efficiently and securely smoothing a surface of an electrode disposed on a base, such as a ceramic substrate, without damaging the electrode or the base. The electrode is fired by a non-shrinkage process using a constraining layer and is separated from the constraining layer. The base including the electrode disposed thereon is prepared and a surface of the electrode is smoothed by vibrating media such that the media are arranged to be in contact with the electrode.

Method for smoothing a surface of an electrode

When a ceramic substrate is manufactured through a constraint firing step that uses a constraining layer, the constraining layer is removed without causing significant damage to a sintered base layer or an electrode formed on the surface of the sintered base layer, and the electrode can be reliably exposed. A green stacked body having a base layer and a constraining layer disposed so as to be in contact with at least one principal surface of the base layer is formed. A fired stacked body having a sintered base layer and a green constraining layer is then obtained by firing the green stacked body to sinter the base layer. Subsequently, the constraining layer is removed from the sintered base layer by vibrating media that are disposed so as to be in contact with the constraining layer.

Method for manufacturing ceramic substrate and ceramic substrate

In a method for producing a multilayer ceramic substrate, a green ceramic laminate includes green conductive patterns arranged on a plurality of ceramic green sheets and portions to be formed into a plurality of multilayer ceramic substrates. Boundary-defining conductive patterns are arranged on the ceramic green sheets and along boundaries of the multilayer ceramic substrates. The boundary-defining conductive patterns have firing shrinkage characteristics that are different from those of the ceramic green sheets. During firing of the green ceramic laminate, cavities adjacent to edges of the boundary-defining conductive patterns are formed. A sintered ceramic laminate is divided at edges passing through the cavities.

Method for producing multilayer ceramic substrate

A method for manufacturing a ceramic multi-layered substrate includes a first step of forming a green ceramic laminate including a plurality of stacked green ceramic base layers, a second step of firing the green ceramic laminate to sinter the green ceramic layers, and a third step of separating the sintered ceramic laminate formed by firing the green ceramic laminate into a ceramic multi-layered substrate. The green ceramic base layers stacked in the first step include a separation pattern formed along separation lines, the separation pattern disappearing during firing. In the third step, the sintered ceramic laminate is separated into a plurality of ceramic multi-layered substrates separated through a cavity formed by the disappearance of the separation pattern during the firing in the second step.

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Nagaokakyo, Japan

Akiyoshi Kawamura