Wiring board
AssigneeKYOCERA Corporation
InventorsHiroaki Sano, Toshifumi Higashi, Akira Imoto, Takafumi Yamaguchi, Sentarou Yamamoto
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Abstract
A wiring board includes an insulation layer made of a ceramic, and an electrical conductor layer extending in a planar direction inside the insulation layer. The electrical conductor layer is constituted by a sintered body of a plurality of crystallites containing a metal as a main component. When a specific range of the electrical conductor layer is specified in a cross-sectional view, a linear length in the planar direction is defined as L0, and a length of a contour of the electrical conductor layer is defined as L1, L1/L0 is within a range from 1.04 to 1.40.
Claims4
A wiring board comprising:
- an insulation layer made of a ceramic;
- and
- an electrical conductor layer extending in a planar direction inside the insulation layer,
- the electrical conductor layer being constituted by a sintered body of a plurality of crystallites comprising a metal as a main component, and
- L1/L0 being within a range from 1.04 to 1.40 when a specific range of the electrical conductor layer is specified in a cross-sectional view, a linear length in the planar direction is defined as L0, and a length of a contour of the electrical conductor layer is defined as L1,
- wherein
- the sintered body comprises silica particles having a diameter from 1 nm to 50 nm, and
- the silica particles are located on surfaces of the plurality of crystallites, and
- wherein
- an area percentage of the silica particles in the electrical conductor layer is from 0.002% to 0.067%.
Dependencies are inferred from the claim text.