OLED-based display having pixel compensation and method
US11862095B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2022 |
| Grant date | Jan 2, 2024 |
| Priority date | — |
| Expiry date | Jul 21, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/145
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An OLED display system having compensation or loss of brightness is provided, including OLED-based display pixels, a sensing system having sensors, a processor having an LIA, an LPF, and analog to digital circuitry connected to each sensor and for providing a sensor signal for each sensor. The processor is adapted to apply a drive signal having a periodic signal to at least one OLED pixel in the display, receive the sensor signal, provide a primary frequency component from the sensor signals using the LIA based on the periodic signal, provide secondary frequency components from the sensor signals using the LPF, convert the secondary frequency components to a digital signal using the ADC, provide the digital signal to the processor as a sensing signal, and determine compensation for the drive signal. A method is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.