Embedded component package structure, embedded type panel substrate and manufacturing method thereof
An embedded component package structure including a circuit substrate, an embedded component and a stress compensation layer is provided. The circuit substrate includes a core layer and an asymmetric circuit structure, and the core layer has a first thickness. The embedded component is disposed in the core layer. The stress compensation layer is disposed on one side of the core layer, and the stress compensation layer has a second thickness between 4 μm and 351 μm.
1. An embedded type panel substrate, comprising:
a plurality of circuit substrate units, each of the circuit substrate units having a core layer and an asymmetric circuit structure, the asymmetric circuit structure having a first thickness;
a plurality of embedded components disposed in the core layers; and
a stress compensation layer disposed on one side of the circuit substrate units, wherein the stress compensation layer has a second thickness, and the embedded type panel substrate has a warpage less than 5 mm,
wherein the asymmetric circuit structure comprises an upper conductive layer disposed on one side of the core layer and electrically connected to the embedded component, wherein the stress compensation layer is spaced apart from the asymmetric circuit structure, the stress compensation layer contains glass fibers, and the second thickness of the stress compensation layer depends on a product of a residual copper ratio of the asymmetric circuit structure and the first thickness of the asymmetric circuit structure.
2. The structure according to claim 1 , wherein the asymmetric circuit structure comprises at least two upper conductive layers and at least one dielectric material layer, wherein the at least two upper conductive layers are disposed on one side of the core layer and electrically connected to the embedded component, and the at least one dielectric material layer is disposed between the at least two upper conductive layers, wherein the second thickness of the stress compensation layer depends on each residual copper ratio and each thickness of the at least two upper conductive layers and a thickness of the at least one dielectric material layer.
3. The structure according to claim 2 , wherein the asymmetric circuit structure further comprises a lower conductive layer disposed on the same side of the core layer with the stress compensation layer, and the second thickness of the stress compensation layer further depends on a residual copper ratio and a thickness of the lower conductive layer.
4. The structure according to claim 1 , wherein the asymmetric circuit structure further comprises at least two lower conductive layers, wherein the stress compensation layer is disposed between the at least two lower conductive layers, and the second thickness of the stress compensation layer depends on each residual copper ratio and each thickness of the upper conductive layer and the at least two lower conductive layers and the first thickness of the core layer.
5. The structure according to claim 1 , wherein a ratio of the second thickness to the first thickness is between 0.03 and 2.9.
6. The structure according to claim 1 , wherein a ratio of the second thickness to the first thickness is between 0.03 and 1.17.
7. The structure according to claim 2 , wherein a ratio of the second thickness to the first thickness is between 0.42 and 2.58.
8. The structure according to claim 3 , wherein a ratio of the second thickness to the first thickness is between 0.18 and 1.152.
9. The structure according to claim 4 , wherein a ratio of the second thickness to the first thickness is between 0.57 and 2.9.
10. A manufacturing method of an embedded component package structure, comprising:
providing a stress compensation layer on one side of a core layer, wherein the core layer has a first thickness, and the stress compensation layer has a second thickness;
disposing an electrical component in the core layer; and
forming an asymmetric circuit structure above and below the electrical component, wherein the stress compensation layer is spaced apart from the asymmetric circuit structure, wherein the asymmetric circuit structure comprises an upper conductive layer disposed on one side of the core layer and electrically connected to the embedded component, the stress compensation layer includes a resin material and a plurality of glass fibers, wherein the second thickness of the stress compensation layer is determined based on:
copper thickness of the upper conductive layer×residual copper ratio×copper density/(resin ratio×resin density)+(glass fiber ratio×glass fiber density).