Patent ID: 9136231
Filing Date: 2015-09-15
Classification: H01L

Abstract:
1. A carrier-free land grid array (LGA) Integrated Circuit (IC) chip package, comprising inner pins, a first IC chip being a carrier-free LGA IC, a pad, a bonding wire, and a mold cap, wherein the inner pins are configured to be pins of first, second and third rows at a front side of the package, and are configured to be exposed multi-row approximate square-shaped circular gold-plated contacts at a back side of the package, three of the inner pins are disposed in the first row; two of the inner pins are disposed at the left side in the second row and are electrically connected to each other, and one of the inner pins is disposed at the right side in the second row; another three of the inner pins are disposed in the third row, the first IC chip is provided on the inner pins, the inner pins are adhered to the first IC chip with an adhesive film sheet, the pad on the first IC chip is connected to the inner pin by the bonding wire, and the mold cap encircles the adhesive film sheet, the first IC chip, the bonding wire, and edges of the inner pin, so as to form a whole circuit, wherein the contacts are disposed as follows: three separate approximate square-shaped circular pin contacts of the same size are disposed in a first row at the back side of the package, three separate approximate square-shaped circular contacts are disposed in a second row, the contact disposed in a top left corner of the second row forming an oblique angle of 0.10×45°, and the contact disposed in the first row directly facing the oblique angle being a first Pin of the circuit; three separate approximate square-shaped circular contacts are further disposed in third row; viewed from the back side, the nine contacts are disposed in a substantially symmetric way.