| 摘要 |
<P>PROBLEM TO BE SOLVED: To cut a ceramic base material surely when obtaining a ceramic substrate by dividing the ceramic base material along a division groove. <P>SOLUTION: A ceramic base material is divided into a plurality of substrate regions 2, and a division groove 7 is formed between adjoining substrate regions 2. The corner 8 of each substrate region 2 faces a cavity 9B connecting with the division groove 7, and has an arcuate shape. At the contact point P of the cavity 9B with the division groove 7, the arcuate corner 8 is tangent to the center line 7a of the division groove 7. A ceramic substrate is obtained by dividing the ceramic base material along the division groove 7. <P>COPYRIGHT: (C)2013,JPO&INPIT |
