System and method to heat LCDs using UV LEDs
US11181765B2 · kind B2 · utility
0Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2021 |
| Grant date | Nov 23, 2021 |
| Priority date | — |
| Expiry date | Mar 29, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inexpensive system for maintaining an LCD display above an operative temperature includes ultraviolet (UV) light-emitting diodes (LEDs) incorporated into a backlight structure. The UV LEDs operate in a frequency range sufficiently removed from the visible band to not interfere with the user. A temperature sensor continuously or periodically monitors the temperature of the LCD and activates the UV LEDs to maintain the LCD in a predetermined temperature range for a desired response time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.