Lead frame, method of making the same and light receiving/emitting device
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United States of America Patent
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Feb 15, 2011
Grant Date -
Jun 4, 2009
app pub date -
Dec 2, 2008
filing date -
Dec 3, 2007
priority date (Note) -
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Abstract
A lead frame includes a base material, a reflection layer formed on a part of the base material, and a characteristic sustaining layer formed at least on the reflection layer to cover the reflection layer for sustaining a characteristic of the reflection layer by isolating the reflection layer from an outside. The reflection layer includes the characteristic to exhibit a predetermined reflectivity to light with a predetermined wavelength, and the characteristic sustaining layer prevents a decrease in the reflectivity of the reflection layer and transmits light reflected by the reflection layer.
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