Invention Grant
US07906835B2 Oblong peripheral solder ball pads on a printed circuit board for mounting a ball grid array package
有权
用于安装球栅阵列封装的印刷电路板上的长周边焊锡球焊盘
- Patent Title: Oblong peripheral solder ball pads on a printed circuit board for mounting a ball grid array package
- Patent Title (中): 用于安装球栅阵列封装的印刷电路板上的长周边焊锡球焊盘
-
Application No.: US11837835Application Date: 2007-08-13
-
Publication No.: US07906835B2Publication Date: 2011-03-15
- Inventor: Robert John Romero
- Applicant: Robert John Romero
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Fiala & Weaver P.L.L.C.
- Main IPC: H01L23/495
- IPC: H01L23/495

Abstract:
Methods, systems, and apparatuses for ball grid array land patterns are provided. A ball grid array land pattern includes a plurality of land pads and electrically conductive traces. The plurality of land pads is arranged in an array of rows and columns. A perimeter edge of the array includes a pair of adjacent oblong shaped land pads. An electrically conductive trace is routed between the pair of adjacent oblong shaped land pads from a land pad positioned in an interior of the array to a location external to the array. The oblong shaped land pads are narrower than standard round land pads, and thus provide more clearance for the routing of traces. The oblong shaped land pads enable more land pads of the land pattern array to be routed external to the array on each routing layer, and thus can save printed circuit board component and assembly costs.
Public/Granted literature
- US20090045508A1 OBLONG PERIPHERAL SOLDER BALL PADS ON A PRINTED CIRCUIT BOARD FOR MOUNTING A BALL GRID ARRAY PACKAGE Public/Granted day:2009-02-19
Information query
IPC分类: