发明名称 |
Electric circuit board including glass substrate and method and apparatus for trimming thereof |
摘要 |
<p>There is disclosed a method of narrowing a focus of a powerful electromagnetic wave (17) such as excimer laser toward a capacitor formed in a glass substrate (1), and adjusting and trimming a change amount of crystallized glass formed in this portion in a limited manner. A capacity value can be trimmed without influencing an outer configuration and other peripheral components, a circuit board whose property is unchanged and whose dispersion is little can be manufactured, and the capacity value can more precisely be adjust</p> |
申请公布号 |
EP1251724(A2) |
申请公布日期 |
2002.10.23 |
申请号 |
EP20010119771 |
申请日期 |
2001.08.28 |
申请人 |
HITACHI, LTD. |
发明人 |
KOJIMA, YASUYUKI;YUKUTAKE, SEIGOU;AKIYAMA, NOBORU;MIWA, TAKAO;NAITO, TAKASHI;SATO, TOSHIYA |
分类号 |
G02F1/136;B23K26/00;B23K101/42;G09F9/00;G09F9/35;H01G4/255;H01L29/786;H05K1/16;H05K3/00;H05K3/46;(IPC1-7):H05K1/16 |
主分类号 |
G02F1/136 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|