Methods and systems for determining a ball-grid array seating plane
US6381553B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 1999 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | May 12, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/3436
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The ball-grid array ball measuring system measures the distances between a reference plane and points on the surface of a small crown area of each of a plurality of balls within a ball-grid array. The points include the apex of each of the balls within the ball-grid array. These distances are then forwarded to the ball-grid array seating plane determining circuit. The ball-grid array seating plane determining circuit determines the ball-grid array seating plane in accordance with the JEDEC “Ball-grid Array Package” Standard. The determined ball-grid array seating plane consequently satisfies the needs for realizing calculations of dimensions and tolerances defined by the Standard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.