LED driving device, lighting device, and vehicle-mounted display device
US12082319B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Sep 29, 2020 |
| Grant date | Sep 3, 2024 |
| Priority date | — |
| Expiry date | Feb 24, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/46
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In an LED driving device, a DC-DC controller performs control such that the voltage at an LED terminal remains equal to a reference voltage, and a reference voltage generator generates the reference voltage such that it decreases as the set value of the LED current set by an LED current setter decreases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.