| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique capable of increasing the dimensional accuracy of a ceramic substrate.SOLUTION: An LTCC substrate 10 includes a first ceramic layer 11a having a thickness of 85 μm or more and a second ceramic layer 11b having a thickness of less than 85 μm. The first ceramic layer 11a and the second ceramic layer 11b have glass components of substantially a same composition and fillers of substantially a same composition. The average particle size (D50) included in the second ceramic layer 11b is larger than the average particle size (D50) included in the first ceramic layer 11a.SELECTED DRAWING: Figure 1 |
