Display device having a pixel driver with a pulse width modulation and a pulse amplitude modulation signals
US11837156B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2022 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Jun 17, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0633
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display device includes a scan write line, a PWM emission line, a PAM emission line, a sweep signal line, a first data line, a second data line, and a subpixel connected thereto, and including a light emitting element, a first pixel driver to supply a control current to a node according to the first data voltage in response to the PWM emission signal, a second pixel driver to generate a driving current according to the second data voltage in response to the PWM emission signal, and a third pixel driver to supply the driving current to the light emitting element according to the PAM emission signal and a voltage of the node, wherein the PWM emission signal includes a plurality of PWM pulses, the PAM emission signal includes a plurality of PAM pulses, and a number of the PWM pulses is greater than a number of the PAM pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.