Diode package structure and manufacturing method thereof
A diode package structure includes a substrate, at least one diode chip and an opaque encapsulating layer. The substrate has an electrically conductive layer. At least one diode chip is mounted on the substrate and electrically connected to the electrically conductive layer. The opaque encapsulating layer has a cap portion and a sidewall portion, wherein the sidewall portion is connected to and surrounds the substrate to jointly form a concave structure, the cap portion is connected between a sidewall of the diode chip and the sidewall portion, wherein a first contact vertex of the cap portion and the sidewall of the diode chip is higher than a second contact vertex of the cap portion and the sidewall portion.
1. A diode package structure manufacturing method comprising:
providing a substrate;
mounting diode chips on the substrate;
forming a first opaque encapsulating layer among the diode chips;
forming a transparent encapsulating layer to cover the diode chips and the first opaque encapsulating layer;
forming a trench to expose the substrate in an area where the transparent encapsulating layer and the first opaque encapsulating layer are overlapped; and
filling a second opaque encapsulating layer in the trench, wherein a first contact vertex of the first opaque encapsulating layer and a sidewall of each diode chip is higher than a second contact vertex of the first opaque encapsulating layer and the second opaque encapsulating layer.
2. The method of claim 1 , wherein an interface is formed between the transparent encapsulating layer and the second opaque encapsulating layer, an angle between the interface and a connection line between the first contact vertex and the second contact vertex is an acute angle.
3. The method of claim 1 , wherein the first and second opaque encapsulating layers comprise white encapsulating glue.
4. The method of claim 1 , wherein the first and second opaque encapsulating layers comprise black encapsulating glue.
5. The method of claim 1 , wherein the diode chips comprise light-emitting diodes.
6. The method of claim 1 , wherein the diode chips comprise photodiodes.
7. The method of claim 1 , wherein the diode chips comprise Zener diodes.