发明名称 |
Semiconductor device comprising a security coating and smartcard provided with such a device |
摘要 |
A semiconductor device (20) comprising a substrate (1) is provided with a first semiconductor element (3) on a first side (2), of the substrate and with a security coating (14) comprising a matrix, a first filler and a second filler. The second filler is an absorber of radiation of a wavelength of between 800 and 1400 nm and the refractive index of the first filler differs at least 0.3 from that of the matrix. As a result, the security coating inhibits transmission of radiation with a wavelength of between 400 and 1400 nm to a very large extent. The semiconductor device (20) can be incorporated in a smartcard.
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申请公布号 |
US6759736(B2) |
申请公布日期 |
2004.07.06 |
申请号 |
US20000730656 |
申请日期 |
2000.12.06 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
BOHMER MARCEL RENE;KOOYMAN NICOLAAS |
分类号 |
G06K19/073;G06K19/077;H01L23/58;(IPC1-7):H01L23/02 |
主分类号 |
G06K19/073 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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