Display Panel Data Line Width Asymmetry for Brightness Uniformity
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Solution Overview
Problem
Liquid crystal display panels suffer from uneven brightness due to vertical bright-dark lines caused by voltage disturbances from data line signals, which existing Half-Source Driver technology fails to adequately address.
Innovation Solution
The display panel employs a two-column reverse driving manner with data lines of varying widths, where the wider data line has lower resistance, ensuring balanced voltages across adjacent pixel columns, thereby eliminating vertical bright-dark lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If Half-Source Driver technology is used to reduce the number of source driving integrated chips, then cost is reduced, but vertical bright-dark lines appear causing uneven brightness
Solution Approach 1:
The patent applies local quality by making the first data line have a different width than the second data line. Specifically, the first data line is designed with a greater width to reduce its resistance, while the second data line maintains a smaller width. This local differentiation in geometric parameters compensates for the voltage disturbances caused by the Half-Source Driver architecture, thereby eliminating the vertical bright-dark lines while maintaining cost efficiency.
2Device complexity
If data lines have uniform width to simplify manufacturing, then manufacturing complexity is reduced, but voltage loss varies causing brightness unevenness
Solution Approach 1:
The patent implements asymmetry by designing the first data line with a greater width than the second data line. This asymmetric configuration is intentional and functional - the wider first data line compensates for voltage drops in specific regions, ensuring uniform brightness across the display panel. This asymmetric design resolves the contradiction by accepting increased structural complexity as a necessary measure to achieve brightness uniformity.
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
This solution achieves balanced brightness across the display panel by reducing voltage loss in the wider data line, resulting in improved display quality and preventing vertical bright-dark lines.
Implementation Method 1
a line width of the first data line is greater than a line width of the second data line
Data Source
AI summary
The present application discloses a display panel and a display device. The display panel includes a substrate, and the substrate is provided thereon with a plurality of data lines. The data lines include an odd-numbered column of data lines and an even-numbered column of data lines. A line width of the odd-numbered column of data lines is greater than a line width of the even-numbered column of data lines.