Quad flat non-leaded package comprising a semiconductor device
View Patent ↗A semiconductor package is proposed. The semiconductor package includes a discrete semiconductor chip on a die pad, a plurality of bond pads situated next to the chip and formed with a plurality of connecting mechanisms and an encapsulant for encapsulating the chip and the pads. In a preferred embodiment the die pad and/or the bond pads comprise means for vertically and laterally interlocking the pads to the encapsulant. The interlocking means of the bond pads and the die pad significantly enhance the bonding strength between the pads and the encapsulant for preventing delamination or cracking, so that quality and reliability of the quad flat non-leaded semiconductor package comprising a discrete can be assured.
1. A quad flat non-leaded semiconductor package device comprising:
a discrete semiconductor die;
a die pad having a first lateral surface for supporting the semiconductor die; and
a plurality of vertical surfaces that are perpendicular to the first lateral surface, at least one bond pad having a first lateral surface and a plurality of vertical surfaces that are perpendicular to the first lateral surface;
at least one bond wire for connecting the discrete semiconductor die to the bond pad; and
an encapsulant for completely encapsulating the die, die pad, bond wire and bond pad having lateral and vertical outer surfaces, wherein the die pad is disposed at the perimeter of the encapsulant and partially exposed to one vertical outer surface of the encapsulant.
2. A quad flat non-leaded semiconductor package device according to claim 1 , wherein a vertical surface of the die pad is provided with interlocking means.
3. A quad flat non-leaded semiconductor package device according to claim 1 , wherein a vertical surface of the die pad is provided with means for interlocking the die pad vertically and laterally.
4. A quad flat non-leaded semiconductor package device according to claim 1 , wherein a first and a second vertical surface of at least one pad is provided with interlocking means.
5. A quad flat non-leaded semiconductor package device according to claim 1 , wherein a vertical surface of a bond pad is provided with interlocking means.