Patent ID: 7507682

Claim:
A ceramic paste used for manufacture of a ceramic multi-layer wiring substrate which is formed by stacking a plurality of ceramic layers one on top of another and which includes an internal wiring, the ceramic paste being printed, using a screen printing process, on a part of a ceramic green sheet to be a ceramic layer having the internal wiring formed thereon which part does not include the internal wiring, to form between the ceramic layers a ceramic filling layer containing a same ceramic component as that in the ceramic layers which ceramic filling layer is not formed on the internal wiring, the ceramic paste comprising: a ceramic component; an acrylic resin; and a cellulose resin, wherein loss factor tan δ represented by (loss modulus)/(storage modulus) of the ceramic paste in a dry condition after printing is equal to or greater than loss factor tan δ of a conductor paste layer to be the internal wiring in a dry condition, wherein the acrylic resin constitutes 20% to 90% by weight to the total amount or 100% by weight of the mixture of the acrylic resin and the cellulose resin, wherein the acrylic resin has a glass-transition temperature in a range of 20° C. to 50° C., and wherein the cellulose resin is nitrocellulose.