Display Panel Driving Method for Charging Rate and Uniformity
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Solution Overview
Problem
Existing display technologies face challenges in achieving normal pattern display, especially for boundary areas in chessboard, H2 Line, and H3 Line pictures, due to low charging rates.
Innovation Solution
A driving method for a display panel that controls the first charging time to be greater than 0.5 times the second charging time, with the first charging time being for charging an Ath-row Mth-column pixel circuit via an Ath data voltage, and the second charging time being for charging a Bth-row Mth-column pixel circuit via both Ath and Bth data voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the charging time for pixel circuits is increased to improve display uniformity, then the charging rate improves, but the display refresh rate decreases and processing time increases
Solution Approach 1:
The patent divides the pixel circuit charging process into two distinct stages: a first charging stage for odd-row pixel circuits and a second charging stage for even-row pixel circuits. This segmentation allows each stage to be optimized independently, ensuring sufficient charging time for display uniformity while maintaining overall processing efficiency through structured time allocation.
Solution Approach 2:
The patent implements preliminary charging actions by charging odd-row pixel circuits before even-row pixel circuits in a sequential manner. The first charging time is specifically designed to be greater than 0.5 times the second charging time, ensuring that pixel circuits are pre-charged sufficiently before the next charging cycle begins, thereby improving display uniformity without excessive time loss.
2Productivity
If the first charging time is increased to ensure sufficient charging for Ath-row pixel circuit, then the charging rate improves, but the total processing time increases
Solution Approach 1:
The patent applies local quality by differentiating charging parameters for different row types. The first charging time for odd-row pixel circuits is specifically optimized to be greater than 0.5 times the second charging time for even-row pixel circuits. This localized optimization ensures each row type receives appropriate charging duration based on its specific requirements, improving overall charging rate while controlling total processing time.
3Reliability
If the time interval between scanning signals is adjusted to improve charging rate, then display uniformity improves, but the complexity of timing control increases
Solution Approach 1:
The patent utilizes parameter changes by adjusting the time interval between scanning signals and the charging durations based on row type. The first charging time is set to be greater than 0.5 times the second charging time, and the time interval between scanning signals is optimized accordingly. These parameter adjustments improve display uniformity while maintaining manageable timing control complexity through systematic parameter optimization.
Data Source
AI summary
The present disclosure provides a driving method and a display device. The driving method is applied to a display panel, including a plurality of rows of scanning lines, a plurality of columns of data lines, and a plurality of rows and a plurality of columns of pixel circuits, the pixel circuits being respectively electrically connected to corresponding rows of scanning lines and corresponding columns of data lines. The driving method includes: controlling a first charging time to be greater than 0.5 times a second charging time, and controlling the first charging time to be less than the second charging time; wherein the first charging time is a time for charging an Ath-row Mth-column pixel circuit via an Ath data voltage on the Mth-column data line; the second charging time is a time for charging the Bth-row Mth-column pixel circuit via the Ath data voltage and a Bth data voltage.