Millimeter wave wafer level chip scale packaging (WLCSP) device and related method
First Claim
1. A method of tuning a wafer level chip scale package (WLCSP) structure, the method comprising:
- providing the WLCSP structure including;
a printed circuit board (PCB) trace connection including at least one PCB ground connection connected with a PCB ground plane, wherein the PCB ground plane includes an opening;
a set of ground contact devices each contacting the printed circuit board trace connection;
a set of chip pads contacting each of the ground contact devices in the set of contact devices;
a chip ground plane connecting the set of chip pads, the chip ground plane including an opening; and
a signal interconnect interposed between two of the set of ground contact devices, the signal interconnect including;
a signal trace connection electrically isolated from the PCB ground plane;
a signal contact device contacting the signal trace connection;
a chip pad contacting the signal contact device; and
a signal trace connection on a chip contacting the chip pad;
determining a performance parameter of the WLCSP structure;
tuning a size of at least one of the opening in the PCB ground plane or the opening in the chip ground plane based upon the determined performance parameter; and
modifying a size of the signal contact device and the ground contact devices based upon the determined performance parameter.
1 Assignment
0 Petitions
Accused Products
Abstract
Various embodiments include wafer level chip scale package (WLCSP) structures and methods of tuning such structures. In some embodiments, the WLCSP structure includes: a printed circuit board (PCB) trace connection including at least one PCB ground connection connected with a PCB ground plane; a set of ground solder balls each contacting the printed circuit board trace connection; a set of chip pads contacting each of the ground solder balls in the set of ground solder balls; a chip ground plane connecting the set of chip pads; and a signal interconnect interposed between two of the set of ground solder balls, the signal interconnect including: a signal trace connection electrically isolated from the PCB ground plane; a signal ball contacting the signal PCB trace connection; a chip pad contacting the signal ball, and a signal trace connection on a chip contacting the chip pad.
24 Citations
4 Claims
-
1. A method of tuning a wafer level chip scale package (WLCSP) structure, the method comprising:
-
providing the WLCSP structure including; a printed circuit board (PCB) trace connection including at least one PCB ground connection connected with a PCB ground plane, wherein the PCB ground plane includes an opening; a set of ground contact devices each contacting the printed circuit board trace connection; a set of chip pads contacting each of the ground contact devices in the set of contact devices; a chip ground plane connecting the set of chip pads, the chip ground plane including an opening; and a signal interconnect interposed between two of the set of ground contact devices, the signal interconnect including; a signal trace connection electrically isolated from the PCB ground plane; a signal contact device contacting the signal trace connection; a chip pad contacting the signal contact device; and a signal trace connection on a chip contacting the chip pad; determining a performance parameter of the WLCSP structure; tuning a size of at least one of the opening in the PCB ground plane or the opening in the chip ground plane based upon the determined performance parameter; and modifying a size of the signal contact device and the ground contact devices based upon the determined performance parameter. - View Dependent Claims (2, 3, 4)
-
Specification