Liquid crystal display apparatus comprising a reflection sheet having a higher degree of freedom of movement in a direction along its surface
US8339540B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2011 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Jun 27, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133608
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A reflection sheet is made of material having a coefficient of thermal expansion different from that of an LED substrate. A fixing member and a retaining member extend through the reflection sheet and the LED substrate so as to fix the reflection sheet and the LED substrate. The reflection sheet includes a fixing hole into which the fixing member is inserted, a retaining hole into which the retaining member is inserted, and LED holes within which light emitting diodes are disposed, respectively. Retaining of the reflection sheet by the retaining member has, compared to fixing of the reflection sheet by the fixing member, a higher degree of freedom of movement in a direction along a surface of the reflection sheet. The LED holes located in positions far from the fixing hole are larger than the LED holes located in positions close to the fixing hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.