Sparkle suppression displays
US4972117A · kind A · utility
11Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1989 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Nov 20, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/896
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Glare-reduction means are disclosed for use on, in or with a transparent visual display panel structure having an inner display surface which comprises a periodic pattern of luminous elements. The glare-reduction means on an outer surface of the panel structure has an irregularly rippled surface whose spatial frequency spectrum exhibits a suppression of spatial frequencies in a predetermined band of frequencies related to the spatial frequencies of the pattern of luminescent elements to prevent or reduce visible interference between the patterns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.