Row based brightness calibration
US11138921B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 31, 2020 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Jan 31, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2370/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display device provides for row based brightness uniformity compensation. The display device includes a display panel and a row driver connected to the display panel. The display panel includes a first pixel row and a second pixel row. The row driver provides first signals to the first pixel row to drive the first pixel row using a first time interval for a first subframe of a first pulse width modulation (PWM) frame of the first pixel row. The row driver provides second signals to the second pixel row to drive the second pixel row using a second time interval for a second subframe of a second PWM frame of the second pixel row. The first time interval may be different from the second timer interval, such as to provide for uniform brightness of light emission across the first and second pixel rows.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.