Cover plate for display device, method of making the same, display device and reflection reducing structure
US6677703B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2002 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Jun 20, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133502
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A cover plate covering a display panel of a display device has a transparent base having a surface facing the display panel and provided with reflection-reducing minute irregularities. The reflection-reducing minute irregularities consist of numerous projections and numerous valleys lying between the projections, and meet a condition expressed by: PMAX≦&lgr;MIN, where PMAX is the maximum distance between the tips of the adjacent projections, and &lgr;MIN is the minimum wavelength in a visible region in a vacuum. The sectional area ratio of total area of sections of the projections of the transparent base in a plane parallel to the transparent base in the plane increases continuously and gradually in a direction from the tips of the projections toward bottoms of the valleys.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.