Display apparatus including LED array
US12307947B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2022 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Oct 24, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/064
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides a display apparatus including an LED array. The display apparatus comprises a light emitting diode (LED) array, a power source, a controller, a PWM switch, and a current source module. The controller is configured to generate a control signal for controlling a first LED column during a scan period. The PWM switch is electrically connected between the first LED column and a second power level. The current source module is electrically connected between the first LED column and the second power level. The current source module is configured to provide a current flow with multiple levels. The PWM switch is controlled based on a first portion of the control signal, and the amount of the current flow provided by the current source module in the scan period depends on a second portion of the control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.