Fixing apparatus for reducing noise of backlit unit
US7407305B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2005 |
| Grant date | Aug 5, 2008 |
| Priority date | — |
| Expiry date | Mar 11, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/503
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fixing apparatus, applied to a diffuser plate of a backlight unit (BLU), comprises a receiving portion and a positioning portion. The receiving portion is symmetrically formed at a first centrosymmetric line of the diffuser plate, a first pair of edges of the receiving portion set at two sides of the first centrosymmetric line. The positioning portion is located within the receiving portion, and a first distance is formed between the positioning portion and the first pair of edges. The first distance is determined according to a mechanical tolerance of the diffuser plate. Movement of the diffuser plate along a direction of a second centrosymmetric line perpendicular to the first centrosymmetric line, is constrained by the positioning portion. The receiving portion and a positioning portion may comprise a fixing hole and a positioning pin. Alternatively, the receiving portion and the positioning portion comprise a fixing groove and a positioning piece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.