Ceramic substrate and ceramic circuit board using same
AssigneeNiterra Materials Co., Ltd.
InventorsYuta TAKEUCHI, Katsuyuki AOKI, Yoshihito YAMAGATA, Kentaro IWAI
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Abstract
A ceramic substrate according to an embodiment includes a surface, and has a compressive stress in a first direction and a compressive stress in a second direction, the compressive stress in the first direction and the compressive stress in the second direction having different values, the first direction and the second direction being parallel to the surface and orthogonal to each other. The ceramic substrate satisfies 4/6≤compressive stress A/compressive stress B≤6/4 where the compressive stress A denotes the compressive stress in the first direction and the compressive stress B denotes the compressive stress in the second direction.
Claims19
A ceramic substrate comprising a surface, and having a compressive stress in a first direction and a compressive stress in a second direction, the compressive stress in the first direction and the compressive stress in the second direction having different values, the first direction and the second direction being parallel to the surface and orthogonal to each other,
- the ceramic substrate satisfying 4/6≤compressive stress A/compressive stress B≤6/4 where the compressive stress A denotes the compressive stress in the first direction and the compressive stress B denotes the compressive stress in the second direction.
Dependencies are inferred from the claim text.