Pixel circuit and pixel driving apparatus
US11935456B2 · kind B2 · utility
1Cited by
14References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2022 |
| Grant date | Mar 19, 2024 |
| Priority date | — |
| Expiry date | Dec 19, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to a pixel circuit and pixel driving apparatus technology. In this technology, two LEDs are arranged in parallel and selectively used in a hybrid manner in which a PWM (pulse width modulation) scheme for supplying a ramp voltage as a gate voltage for a transistor arranged within a pixel and for turning off the LEDs at the moment when the gate voltage becomes equal to a threshold voltage and a PAM (pulse amplitude modulation) scheme for determining a starting value of the ramp voltage based on a grayscale value of the pixel are combined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.