Flexible led backlighting circuit
US6697130B2 · kind B2 · utility
120Cited by
22References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2001 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | May 8, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/041
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A flexible circuit board mounted with top-light LEDs and LED control circuits provides a convenient and space efficient way to backlight an LCD. The flexible circuit board may have multiple tabs that are folded such that the top-light LEDs provide light into a light pipe from multiple directions. The top-light LEDs and LED control circuits may be located on the same side of the flexible circuit board for improved cost savings and manufacturability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.