Method and apparatus for testing a video display chip
US6115305A · kind A · utility
3Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1999 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Jun 15, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/31855
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A video chip includes test circuitry for detecting opens and shorts. The circuitry includes a series-connected chain of transistors and a test register. There is a circuit for the column lines and for the row lines. A bit pattern is driven onto the column or the row lines and received in the corresponding test circuitry. The pattern is read out and compared against the input pattern to detect faulty lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.