Newton ring mura detection system
US8780097B2 · kind B2 · utility
8Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2011 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Aug 24, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for detecting newton ring mura on a display includes sensing an image of the display with an image capture device and determining a border boundary of an illuminated portion of the display. The image is spatially filtered as defined by the border boundary using a filter that reduces sensor noise and a grid pattern of the display. The spatially filtered image is processed to determine if a region proximate a pixel location is a potential newton ring mura defect and characterizing the potential newton ring mura defects to remove at least one of the potential newton ring mura defects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.