| 发明名称 |
COVER GLASS FOR SOLID-STATE IMAGE PICKUP ELEMENT |
| 摘要 |
PROBLEM TO BE SOLVED: To provide cover glass for solid-state image pickup element which radiates small quantities ofα-rays andβ-rays. SOLUTION: The cover glass is made of borosilicate glass containing <=50 ppb uranium(U), <=50 ppb thorium(Th), and substantially zero K2O and radiatesβ-rays at a quantitative rate of <=5×10-6μCi/cm2.
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| 申请公布号 |
JP2001185710(A) |
申请公布日期 |
2001.07.06 |
| 申请号 |
JP20000319977 |
申请日期 |
2000.10.19 |
| 申请人 |
NIPPON ELECTRIC GLASS CO LTD |
发明人 |
NAGAI HIROKI |
| 分类号 |
C03C3/093;H01L23/02;H01L27/14;H04N5/335;H04N5/372;(IPC1-7):H01L27/14 |
主分类号 |
C03C3/093 |
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