| abstract |
(57) Abstract: A low-dielectric-constant ceramic sintered body that can be fired with a low-melting-point, low-resistance conductor such as gold, silver, and copper, has a low dielectric constant, and can reduce the delay time of a high-frequency signal. obtain. To manufacture a wiring board having an insulating substrate and a wiring circuit layer, a ceramic composition containing a glass powder and a non-oxide ceramic powder and / or a metal powder that generates a gas during firing. The open porosity of the low dielectric constant ceramic sintered body is 1% or less and the closed porosity is 5% by forming and firing a product to form a glass layer on the surface. The dielectric constant can be reduced to a relative dielectric constant of 5 or less, In addition, since simultaneous firing with a low-resistance conductor is possible, a signal delay time can be reduced, a parasitic capacitance can be reduced, and a wiring board that can efficiently transmit a high-frequency signal can be obtained. |