Display Panel Driving Method Using Segmented Gate Scanning
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Solution Overview
Problem
Existing display technologies face challenges in efficiently driving display panels to achieve high refresh frequencies, improved smoothness, and increased charging rates, particularly for high-resolution displays.
Innovation Solution
A driving method for a display panel that involves loading first gate scanning signals with specific overlapping durations to gate lines and applying data voltages to data lines based on target display data obtained by removing part of the original display data, thereby optimizing the charging of sub-pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional gate scanning signals are loaded to all gate lines with uniform timing, then the display panel can maintain simple driving circuitry, but the refresh frequency is limited and charging rate is insufficient
Solution Approach 1:
The patent segments the gate lines into multiple groups (first gate line group, second gate line group, third gate line group) and applies different scanning strategies to each group. Specifically, odd-numbered gate lines are scanned in one sequence while even-numbered gate lines are scanned in another sequence, enabling parallel processing and higher refresh frequencies without overly complicating the overall driving circuitry.
Solution Approach 2:
The patent implements periodic scanning patterns where gate lines are scanned in alternating sequences for odd and even numbered lines. This periodic action allows the display panel to achieve higher refresh frequencies by systematically cycling through different gate line groups in a predetermined pattern, balancing performance improvement with circuit complexity management.
2Loss of time
If data is transmitted for all sub-pixel rows in each frame, then complete image data is displayed, but data transmission time and power consumption increase
Solution Approach 1:
The patent applies preliminary charging to even-numbered gate line groups in advance before they are officially scanned. By pre-charging these groups during periods when their data will not be immediately displayed, the system reduces the peak data transmission requirements and overall transmission time while ensuring complete image data is eventually displayed without loss.
3Manufacturing precision
If uniform overlapping durations are used for gate scanning signals, then signal timing is simple to control, but data voltage misplacement occurs and display smoothness is reduced
Solution Approach 1:
The patent applies different overlapping durations to different gate line groups based on their specific scanning requirements. The first overlapping duration is applied to transitions between certain gate line groups while a different second overlapping duration is applied to other transitions. This local differentiation ensures precise data voltage placement for each group while maintaining manageable control complexity through systematic patterns.
Data Source
AI summary
A driving method for a display panel and a display apparatus. The driving method includes: obtaining original display data of a current display frame; and when it is determined to adopt a first driving mode, loading first gate scanning signals (GA1_1-GA12_1) to gate lines (GA, GA1-GA12) in the display panel, and loading a data voltage to data lines (DA, DA1-DA7) in the display panel according to target display data obtained by removing a part of data from the original display data, so as to charge each sub-pixel in the display panel with the data voltage.