Packaging structure for thin die and method for manufacturing the same
A packaging structure for thin die is provided. The packaging structure has a substrate, a thin die, a strengthening layer and an encapsulation body. The thin die is disposed on and electrically connected with the substrate; the strengthening layer is disposed on the thin die; and the encapsulation body is formed on the substrate and covers both the thin die and the strengthening layer. The strengthening layer can bear pressure or stress during the formation of the encapsulation body to protect the thin die. A method for manufacturing the packaging structure for the thin die is further provided to manufacture the above packaging structure for the thin die.
1. A packaging structure for thin die, comprising:
a substrate;
a thin die, disposed on and electrically connected with the substrate;
a strengthening layer, made of a thermosetting material and disposed directly on a top surface of the thin die; and
an encapsulation body, formed on the substrate and covering both the thin die and the strengthening layer, wherein an entire top surface of the strengthening layer directly contacts the encapsulation body;
wherein the strengthening layer bears a pressure or stress during a formation of the encapsulation body to protect the thin die;
wherein a width of the strengthening layer is smaller than a width of the thin die, so that a pad on the top surface of the thin die is exposed from the strengthening layer so that it is electrically connected with a pad of the substrate via a bonding wire;
wherein no adhesive material is disposed between the strengthening layer and the thin die.
2. The packaging structure according to claim 1 , wherein the pressure or stress includes: a molding pressure generated by molding the encapsulation body; or a horizontal expansion or contraction stress of the encapsulation body or the substrate generated by thermally curing the encapsulation body.
3. The packaging structure according to claim 1 , wherein a thickness of the thin die is less than 80 μm.
4. The packaging structure according to claim 3 , wherein the thickness of the thin die is less than 45 μm.
5. The packaging structure according to claim 1 , wherein a thickness of the thin die is larger than a thickness of the strengthening layer.
6. The packaging structure according to claim 1 , wherein the thin die is electrically connected with the substrate through wire bonding.