Display Panel Shielding Lines for Data-Line Crosstalk Control
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Solution Overview
Problem
The existing source driving architecture for display panels, which uses two data lines for each column of sub-pixels, increases the time required for writing data and compensating for threshold voltage, leading to issues like lateral crosstalk and poor display quality due to parasitic capacitance between adjacent data lines.
Innovation Solution
The display panel incorporates a shielding line that acts as a capacitor with the first and second data lines, reducing the influence of parasitic capacitance and minimizing potential jumps across the data lines, thereby improving display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If two data lines are used for each column of sub-pixels to increase data writing time and threshold voltage compensation time, then the time for writing data and compensating threshold voltage is increased, but lateral crosstalk and display quality deteriorate due to increased parasitic capacitance between adjacent data lines
Solution Approach 1:
A shielding line is introduced as an intermediary element between adjacent data lines. This shielding line acts as a mediator that blocks the harmful electromagnetic coupling between data lines, reducing parasitic capacitance and lateral crosstalk while allowing the two-data-line architecture to maintain its extended data writing and compensation time benefits
2Productivity
If two data lines are arranged adjacent to each other to connect pixel driving circuits in odd and even rows, then the source driving architecture is improved for higher resolution and refresh frequency, but parasitic capacitance between the data lines increases causing potential jumps
Solution Approach 1:
The shielding line serves as a protective intermediary positioned between the first and second data lines. It reduces the electromagnetic coupling between these adjacent high-speed data lines, stabilizing the signals while allowing them to operate at the required speeds for high resolution and refresh frequency displays
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The introduction of shielding lines reduces lateral crosstalk and enhances display quality by minimizing the impact of parasitic capacitance on the data lines, ensuring more stable potential distributions and improved image rendering.
Implementation Method 1
The at least one shielding line constitutes a first capacitor with the first data line, and/or a second capacitor with the second data line
Implementation Method 2
reducing the influence of parasitic capacitance and minimizing potential jumps across the data lines
Data Source
AI summary
A display panel includes a substrate, a plurality of pixel driving circuits, a plurality of first data lines, a plurality of second data lines and at least one shielding line. A first data line in the plurality of first data lines is electrically connected to pixel driving circuits in even-numbered rows in a same column of pixel driving circuits. A second data line in the plurality of second data lines that is arranged adjacent to the first data line is electrically connected to pixel driving circuits in odd-numbered rows in a same column of pixel driving circuits. The first data line and the second data line have an overlapping area therebetween. The at least one shielding line is configured to transmit a fixed voltage. The at least one shielding line constitutes a first capacitor with the first data line, and/or a second capacitor with the second data line.