Display Panel Driving Method for Flicker Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Seamless Dynamic Refresh Rate Switching (SDRRS) technology in notebook computers causes screen flicker due to excessive brightness differences when switching between different picture refresh rates, particularly noticeable at low gray scale states, as human eyes are more sensitive to brightness changes at lower brightness levels.
Innovation Solution
A driving method and apparatus for display panels that adjust the refresh rate and cathode power supply voltage to reduce the working current of each pixel, minimizing brightness differences by generating a refresh rate adjustment instruction and corresponding voltage adjustments when switching between dynamic and static pictures or vice versa, using a mapping database to correlate cathode power supply voltage with picture refresh rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the picture refresh rate is switched from 60 Hz to 40 Hz to reduce power consumption, then power consumption is reduced, but the charging time increases causing higher brightness and perceived flicker
Solution Approach 1:
The patent changes the cathode power supply voltage parameter in response to refresh rate switching. When switching from 60 Hz to 40 Hz, the cathode voltage is adjusted to compensate for the increased charging time, thereby controlling the brightness to remain consistent and eliminate perceived flicker while maintaining power savings
2Use of energy by moving object
If the picture refresh rate is switched between different rates, then power consumption is optimized, but the brightness difference becomes excessive causing screen flicker
Solution Approach 1:
The system implements feedback control by monitoring the refresh rate switching state and automatically adjusting the cathode power supply voltage accordingly. This closed-loop approach ensures that brightness remains stable during refresh rate transitions, preventing screen flicker while maintaining optimized power consumption
Data Source
AI summary
The present disclosure relates to the technical field of display panels, in particular to a driving method and driving apparatus of a display panel. The driving method may include in response to detecting that the display panel is switched from a dynamic picture to a static picture, generating a refresh rate adjustment instruction; according to the refresh rate adjustment instruction, switching the picture refresh rate of the display panel from a first picture refresh rate to a second picture refresh rate and generating a voltage adjustment instruction; obtaining a target cathode power supply voltage matching the second picture refresh rate; and based on the voltage adjustment instruction and the target cathode power supply voltage, adjusting the display panel to change a working current of each pixel in the display panel.