Display Panel Signal Wire Width Adjustment for Uniformity
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Solution Overview
Problem
Conventional display panels with non-rectangular screens face issues due to differences in pixel unit density between special-shaped and non-special-shaped display areas, leading to uneven loads on scanning wires, which affect display uniformity and brightness.
Innovation Solution
A display panel design featuring a fixed potential signal wire with a wider second signal wire and a leading-out wire, forming parasitic capacitance to equalize the load on the first scanning wire, ensuring uniform voltage and current distribution across the display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a non-rectangular display screen is used to meet diverse user requirements, then adaptability is improved, but display uniformity deteriorates due to different loads on scanning wires in special-shaped and non-special-shaped display areas
Solution Approach 1:
The patent applies local quality by differentiating the width of power wires in different display areas. Specifically, the power wire width in the first display area (with fewer pixels per row) is made different from that in the second display area (with more pixels per row). This local differentiation compensates for the load differences on scanning wires, ensuring uniform display quality across the entire non-rectangular screen while maintaining shape adaptability.
2Adaptability or versatility
If the number of pixel units per row varies between display areas, then display screen shape flexibility is improved, but load balance on scanning wires deteriorates
Solution Approach 1:
The patent employs parameter changes by adjusting the power wire width parameter in different display areas. When the number of pixel units per row varies between display areas, the power wire width is相应ly adjusted to compensate for load differences. This parameter modification ensures that scanning wires experience balanced loads across all display areas, maintaining reliability while allowing flexible display configurations.
3Manufacturing precision
If a wider power wire is used to compensate for scanning wire load, then display uniformity is improved, but wire width difference between signal wires deteriorates
Solution Approach 1:
The patent applies local quality by making the power wire width locally adaptive rather than uniformly different throughout. The power wire width is specifically adjusted only in the first display area where load compensation is needed, while maintaining standard width in other areas. This localized approach improves display uniformity without excessively increasing overall device complexity.
Solution Approach 2:
The patent segments the display area into multiple regions (first display area and second display area) with different pixel densities, and correspondingly segments the power wire into sections with different widths. This segmentation allows precise load compensation in specific areas while keeping other areas simple, balancing display uniformity improvement with device complexity management.
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 design improves display uniformity by reducing voltage and current differences between pixel units, minimizing the split-screen phenomenon and enhancing overall display effect.
Implementation Method 1
the second signal wire and the leading-out wire are used to generating a parasitic capacitance to compensate a load of the first scanning wire
Data Source
AI summary
Provided is a display panel, which includes a first sub-display area, a second sub-display area, and a non-display area. A number of pixel units in the first sub-display area unit is less than a number of pixel units in the second sub-display area. The first sub-display area includes a first a scanning wire. A fixed potential signal wire of the non-display area includes a first signal wire and a second signal wire. The second signal wire is connected to the first signal wire. The second signal wire includes a connecting portion and strip portions connected to the connecting portion and arranged at intervals. A width of the second signal wire is greater than a width of the first signal wire.