Backlight unit
US8449167B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 15, 2009 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Jun 21, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/503
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A backlight unit includes a lower frame comprising an opening; a light source arranged in the opening; a light guide plate arranged in the opening; and an upper frame arranged above the lower frame. The unit is so arranged that if one side of a projection (e.g., in the upper frame) is made in contact with one side of a hole (e.g. in the lower frame), then the first side end portion on the first overall end of the side surface of the upper frame is located approximately in the same plane with a first side end portion on the first overall end of the side surface of the lower frame, and the second side end portion on the second overall end of the side surface of the upper frame extends beyond the second side end portion on the second overall end of the side surface of the lower frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.