Display Panel Voltage Compensation via Multi-Region Detection Terminals
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Solution Overview
Problem
Large-sized display panels experience differences in display images due to voltage compensation issues caused by resistance and capacitance differences between voltage compensation points at the ends, leading to inconsistent image quality across regions.
Innovation Solution
The display panel incorporates first and second detection terminals electrically connected to the common electrode layer through electrical connection wires, allowing for simultaneous voltage compensation across different regions by linking the detection terminals through a second electrical connection wire, ensuring uniform image display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voltage compensation points are arranged at two ends of the display panel, then voltage compensation is provided to reduce horizontal crosstalk, but resistance and capacitance differences cause display images of different regions to be different
Solution Approach 1:
The patent divides the voltage compensation function into multiple independent detection terminals (first detection terminal and second detection terminal) positioned at different regions of the display panel. Each detection terminal independently detects voltage at its local region and transmits detection signals through separate first electrical connection wires to the terminal portion, enabling region-specific voltage compensation that accounts for local resistance and capacitance variations.
Solution Approach 2:
The patent adds a spatial dimension to voltage compensation by strategically positioning detection terminals at different locations (including away from the terminal portion) rather than relying solely on end-positioned compensation points. This multi-dimensional detection approach ensures comprehensive coverage of voltage variations across the entire display panel surface.
2Measurement precision
If detection terminals are arranged away from the terminal portion, then comprehensive voltage detection is achieved, but electrical connection complexity increases
Solution Approach 1:
The patent merges the electrical connection functions by using the existing terminal portion as a common connection point for both first detection terminal and second detection terminal. The first electrical connection wires connect both detection terminals to the terminal portion, and the second electrical connection wire provides additional connectivity, thereby sharing infrastructure and reducing overall system complexity.
Solution Approach 2:
The terminal portion serves multiple functions: it acts as the connection point for data lines, common electrode connections, and simultaneously serves as the convergence point for first electrical connection wires from multiple detection terminals. This multi-functional design reduces the need for separate dedicated connection structures.
Data Source
AI summary
The present application provides a display panel and a driving method thereof. The display panel includes an array substrate with a terminal portion and a color filter substrate with a common electrode layer. The display panel further includes a first detection terminal, a second detection terminal arranged away from the terminal portion, first electrical connection wires, and a second electrical connection wire. Both the first detection terminal and the second detection terminal are electrically connected to the common electrode layer. The first detection terminal and the second detection terminal are respectively electrically connected to the terminal portion through corresponding first electrical connection wires. The first detection terminal and the second detection terminal are electrically connected through the second electrical connection wire.