Backlit lighting device, liquid crystal display device utilizing same, and liquid crystal display device manufacturing method
US6700634B2 · kind B2 · utility
24Cited by
7References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2002 |
| Grant date | Mar 2, 2004 |
| Priority date | — |
| Expiry date | Mar 8, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0053
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Light directional diffusing elements such as hologram elements are formed on the upper surface or lower surface of a light guide plate near the light source, and dots are formed of multiple small protrusions or small depressions on the light guide plate upper or lower surface to change the direction the light transmits from the input surface of the upper surface of light guide plate to a specified angle to irradiate towards a display element, to obtain a liquid crystal display technology for an easy to assemble backlit lighting device with greater brightness and fewer dark spots.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.