Self-powered cholesteric liquid crystal display device and maximum power tracking method
US12339554B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2023 |
| Grant date | Jun 24, 2025 |
| Priority date | — |
| Expiry date | Dec 28, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2300/26
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A self-powered cholesteric liquid crystal display (ChLCD) device and a method for tracking maximum power are disclosed. The ChLCD device includes a solar cell module, electrical energy for charging, an energy storage device, a charging unit, and a ChLCD module. The method of tracking the maximum power is: supply electrical energy for charging to the charging unit, sense the ambient temperature, and capture the sensed ambient temperature, correspond its value to the voltage value in the comparison data, and adjust the reference driving voltage with a resistor divider, and then electrically charging to the charging unit by the reference driving voltage, so that the charging unit can capture the maximum power of the electrical energy from the solar cell module, and then store the electrical energy in the energy storage device, to refresh the display screen of the ChLCD module and the ChLCD device can effectively utilize electricity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.