Display Panel Driving Method Reducing Push Mura and Power
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Solution Overview
Problem
Conventional large viewing angle LCD display panels face issues with Push Mura defects and high power consumption due to frequent level switches in the driving method.
Innovation Solution
A driving method for display panels that generates inverse AC common signals and applies them through N-frame switches, reducing the frequency of level switches to every N frames, thereby minimizing Push Mura issues and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the AC common signal is configured to have one level switch each one frame (1-frame switch), then the display panel can be driven with large viewing angle, but the Push Mura issue occurs when pressed by external force and power consumption increases
Solution Approach 1:
The patent implements N-frame switch manner where the AC common signal level switches every N frames instead of every frame. This periodic action with extended period reduces the frequency of level switches, thereby reducing power consumption while maintaining the large viewing angle benefit. The inverse relationship between consecutive pixel rows ensures proper liquid crystal switching while minimizing energy loss.
2Illumination intensity
If the AC common signal is configured to have one level switch each one frame (1-frame switch), then the display panel can be driven with large viewing angle, but Push Mura defects occur when pressed by external force
Solution Approach 1:
By extending the level switch period to N frames, the patent reduces the frequency of liquid crystal molecule reorientation. This reduces the cumulative effect of external pressure on the liquid crystal alignment, thereby minimizing Push Mura defects while preserving the large viewing angle characteristic through the inverse signal configuration.
3Speed
If the level switch frequency is increased to every one frame, then the liquid crystal can be properly switched for large viewing angle, but power consumption increases
Solution Approach 1:
The patent uses periodic action with N-frame intervals to reduce switching frequency and power consumption. The inverse relationship between odd and even pixel rows ensures that liquid crystal molecules are properly switched during each active period, maintaining viewing angle performance while reducing overall energy consumption through less frequent level transitions.
4Speed
If the level switch frequency is increased to every one frame, then the liquid crystal can be properly switched for large viewing angle, but Push Mura defects occur
Solution Approach 1:
The N-frame switch manner with inverse signals for consecutive pixel rows provides sufficient liquid crystal switching within each N-frame period while reducing the cumulative impact of external pressure. This periodic approach maintains proper liquid crystal orientation for large viewing angle while minimizing Push Mura defects through reduced switching frequency and staggered signal application.
Data Source
AI summary
A driving method for a display panel is provided. The display panel includes at least a first common signal line, at least a second common signal line and a plurality of pixels arranged as a pixel array. The pixel array includes a first pixel row and a second pixel row electrically connected to the first common signal line and the second common signal line, respectively. The driving method includes steps of: generating a first AC common signal; generating a second AC common signal, wherein the first AC common signal and the second AC common signal are inverse to each other; and providing the first and second AC common signal to the first and second pixel rows through the first and second common signal lines, respectively, by way of N-frame switch, wherein N is a positive integer.