Display Panel Driver Circuit With Region-Specific Refresh Frequencies
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Solution Overview
Problem
Current display devices, such as foldable mobile phones, cannot set matching drive frequencies for different regions, leading to inefficiencies in display performance and power consumption.
Innovation Solution
A display panel with a first driver circuit divided into two driving portions, each outputting sub-drive signals with different pulse change frequencies, allowing independent frequency control for different regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If a consistent drive frequency is applied across the entire screen, then the display performance is uniform, but power consumption cannot be optimized for different regions
Solution Approach 1:
The driver circuit is divided into multiple driving portions, each capable of independently controlling the drive frequency for different display regions. This segmentation allows each region to be driven at its optimal frequency, reducing overall power consumption while maintaining necessary display performance in each zone
Solution Approach 2:
Different driving portions are assigned different drive frequencies according to the specific display requirements of each region. This local quality approach enables high-frequency driving for regions displaying dynamic content while using lower frequencies for regions with static or less demanding content, optimizing power efficiency
2Reliability
If the drive frequency is increased to improve display performance, then display quality improves, but power consumption increases
Solution Approach 1:
The drive frequency parameter is dynamically adjusted for different driving portions based on the actual display content requirements. By changing the frequency parameter locally rather than uniformly across the entire display, the system achieves high display performance where needed while consuming less power in regions where lower frequencies suffice
3Use of energy by stationary object
If different drive frequencies are set for different regions, then power consumption is optimized, but the driver circuit complexity increases
Solution Approach 1:
The driver circuit is segmented into multiple driving portions with independent frequency control capabilities. While this increases functional complexity, the segmentation allows for modular design where each portion can be independently optimized and controlled, managing the overall system complexity through structured division
Data Source
AI summary
Provided are a display panel and a display device. The display panel includes a first driver circuit and a pixel circuit. The first driver circuit is configured to provide a first drive signal for the pixel circuit, where the first drive signal includes a first sub-drive signal and a second sub-drive signal. The first driver circuit includes a first driving portion and a second driving portion. The first driving portion includes the K-th stage to the L-th stage of shift registers and is configured to output the first sub-drive signal, and the second driving portion includes the M-th stage to the N-th stage of shift registers and is configured to output the second sub-drive signal. The pulse change frequency of the first sub-drive signal is F1, and the pulse change frequency of the second sub-drive signal is F2, where F1≠F2.