Methods for the Production of Luminescent Diode Chips and Luminescent Diode Chip
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United States of America Patent
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Issued Date -
Aug 28, 2008
app pub date -
Aug 4, 2005
filing date -
Sep 30, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a method of making LED chips provided with a luminescence conversion material containing at least one phosphor. In the method, a layer composite is prepared that includes an LED layer sequence for a multiplicity of LED chips and comprises on a main surface at least one electrical contact surface for each LED chip, for electrically connecting said chip. A layer of adhesion promoter is applied to the main surface and selectively removed from at least portions of the contact surfaces. At least one phosphor is then applied to the main surface. Alternatively, a luminescence conversion material is applied to the main surface and selectively removed from at least portions of the contact surfaces. The invention also relates to an LED chip provided with a luminescence conversion material.
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