Liquid crystal display device
US8517591B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 18, 2009 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Dec 29, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133615
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a method of forming a thin light guide plate which includes a compression step in an injection molding step, an optical pattern is liable to be adhered to a mold. Further, in removing the light guide plate from the mold using an ejector pin, a stress is concentrated on a local area of the light guide plate thus generating warping, deformation or irregularities in size of the light guide plate. To overcome such drawbacks, a liquid crystal display device is configured such that an optical pattern portion is compressed, and the light guide plate is removed by making use of a peripheral portion of a mold thus preventing the generation of stress in a local area of the light guide plate due to an ejector pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.