Display Panel Sub-Pixel State Compensation for Mura Control
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Solution Overview
Problem
Display panels suffer from display non-uniformity issues, commonly known as Mura, which are caused by factors such as different light emitting moments and threshold voltage drifts among sub-pixels.
Innovation Solution
The display panel employs sub-pixels with different states, including varying light emitting intensities, first data signals, or first power signals, to compensate for brightness differences due to factors like different light emitting moments and threshold voltage drifts, thereby improving display consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sub-pixels emit light at different moments or have different threshold voltage drifts, then display non-uniformity (Mura) occurs, but making all sub-pixels emit simultaneously or with identical characteristics is not physically achievable
Solution Approach 1:
The patent applies local quality by dividing the display panel into multiple regions (first region and second region) with different driving strategies. Sub-pixels in the first region receive first data signals while sub-pixels in the second region receive second data signals, allowing each region to be optimized for its specific characteristics and compensating for local variations in sub-pixel performance.
Solution Approach 2:
The patent implements dynamics by using different driving methods for different regions - the first driving method for the first region and the second driving method for the second region. This dynamic approach allows the system to adapt to varying sub-pixel characteristics and achieve uniform display across the entire panel.
2Manufacturing precision
If different driving methods are used for different regions, then display uniformity improves, but driving circuit complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the display panel into multiple regions (first region and second region) that can be driven independently using different driving methods. This segmentation allows complex compensation strategies to be applied to specific regions without affecting the entire display panel, managing overall system complexity.
Solution Approach 2:
The patent implements local quality by providing region-specific driving methods - first data signals and first driving method for the first region, and second data signals and second driving method for the second region. This localized approach allows optimized compensation for each region's unique characteristics while maintaining manageable overall complexity.
Data Source
AI summary
Provided are a display panel, a driving method thereof, and a display device, which relate to the field of display technology, for improving the brightness consistency of the display panel. The display panel includes sub-pixels having different states. The different states include different light emitting intensities of the sub-pixels, or different first data signals received by the sub-pixels; or different first power signals received by the sub-pixels. Said “the sub-pixels having different states” includes following cases: a same one of the sub-pixels corresponds to different states in different periods, or the sub-pixels in at least two different regions have different states.