Display Panel Driving Circuit Non-Sequential Scanning
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Solution Overview
Problem
Liquid crystal displays face issues with power consumption and operational risks during heavy-load conditions, leading to uneven charging and brightness across rows due to sequential scanning, resulting in 'bright and dark rows' or stripe feeling.
Innovation Solution
A driving method and circuit that sorts image data rows based on voltage polarity and generates sorting labels to compensate image data voltages, allowing non-sequential scanning of gate lines, ensuring consistent charging efficiency and brightness across rows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If sequential scanning mode is used, then power consumption is reduced under normal conditions, but under heavy-load conditions power consumption increases greatly and causes operational risks
Solution Approach 1:
The patent implements dynamic scanning mode switching that adapts to different display conditions. The system automatically transitions between sequential and non-sequential scanning modes based on real-time detection of display content characteristics, optimizing power consumption while ensuring operational reliability under varying load conditions.
Solution Approach 2:
The patent changes the scanning mode parameter from fixed sequential to variable, allowing switching between sequential and non-sequential modes. This parameter change enables the system to adjust its operating characteristics to match different display scenarios, reducing power consumption during heavy-load conditions while maintaining reliability.
2Loss of energy
If non-sequential scanning mode is used, then power consumption is reduced under heavy-load conditions, but stripe feeling is generated due to different charging efficiency between rows
Solution Approach 1:
The patent applies preliminary compensation actions to image data before display. By detecting the voltage polarity of each row's image data and pre-calculating compensation values, the system adjusts the image data in advance to counteract the uneven charging effects that would otherwise occur during non-sequential scanning, thereby eliminating stripe feelings.
Solution Approach 2:
The patent implements a feedback mechanism that monitors the voltage polarity characteristics of image data for each row. Based on this feedback information, the system dynamically adjusts compensation values and scanning strategies to maintain uniform display quality across all rows, preventing stripe artifacts while preserving power savings.
3Power
If voltage polarity switching is performed during scanning, then power consumption is optimized, but charging efficiency becomes uneven across rows causing bright and dark rows
Solution Approach 1:
The patent applies local quality adjustment by treating each row's image data independently based on its voltage polarity characteristics. The system calculates and applies row-specific compensation values that account for local differences in charging efficiency, ensuring that each row receives appropriately adjusted voltage to achieve uniform brightness across the entire display.
Data Source
AI summary
The disclosure discloses a driving method and a circuit of a display panel and a display device. The driving method includes the following steps: acquiring image data of a screen to be displayed; acquiring a voltage polarity corresponding to each row of image data in the image data, in responding to a determination that the image data of the screen to be displayed are image data of a heavy-load screen; sorting rows of image data according to voltage polarities and generating sorting labels; compensating image data voltage of a corresponding row according to the sorting labels; scanning gate lines of the display panel in sequence according to the sorting labels; and outputting compensated image data of the corresponding row to a corresponding data line of the display panel to display the screen to be displayed.