Display Panel Wire Width Adjustment for Bezel Reliability
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Solution Overview
Problem
The existing display panel technologies face issues with wire breakage due to the small wire widths at intersections, caused by exposure problems, leading to compromised wire quality and potential failure of the display panel.
Innovation Solution
The display panel design includes an array substrate with first and second wires, where the wire widths at intersections are adjusted to be smaller or larger than at other positions, using a mask with varying light-transmissive regions to compensate for exposure issues during manufacturing, ensuring the wire widths are appropriate to prevent breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the wire width is reduced to enable smaller bezel design, then the bezel area is reduced, but the wire strength and reliability deteriorate due to increased risk of wire breakage
Solution Approach 1:
The patent applies local quality by making the wire width non-uniform along its length. Specifically, the wire width is increased at intersection positions where wires cross each other, while maintaining smaller width in non-intersection regions. This localized adjustment strengthens the wire at critical failure points without increasing the overall wire area, thus preventing wire breakage while maintaining compact bezel design.
2Manufacturing precision
If the wire width is reduced to achieve higher manufacturing precision in dense wiring, then the wiring density is improved, but the wire strength decreases leading to wire breakage
Solution Approach 1:
The patent implements local quality by varying the wire width along its length based on positional requirements. At intersection positions where wiring density is highest and failure risk is greatest, the wire width is locally increased to provide sufficient strength. In non-intersection regions, the wire maintains a smaller width to achieve high wiring density. This selective width adjustment resolves the contradiction between manufacturing precision and wire strength.
3Area of stationary object
If the wire width is uniformly small across the entire wire, then the bezel region size is reduced, but the wire quality deteriorates at intersection positions due to exposure issues
Solution Approach 1:
The patent applies local quality by making the wire width position-dependent. At intersection positions, the wire width is locally increased to ensure adequate exposure during manufacturing and prevent quality defects. In non-intersection regions, the wire maintains a smaller width to minimize the bezel region size. This localized differentiation in wire dimensions resolves the contradiction between compact bezel design and manufacturing quality at critical intersection points.
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 approach effectively prevents wire breakage by adjusting wire widths at intersections, ensuring the display panel functions normally and maintaining wire quality, while allowing for a smaller bezel design, thus enhancing product competitiveness.
Implementation Method 1
a mask with varying light-transmissive regions to compensate for exposure issues during manufacturing
Data Source
AI summary
Provided are a display panel, a display device, and a mask. The display panel includes an array substrate. The array substrate includes a base substrate and first wires and second wires located on one side of the base substrate. The orthographic projections of the first wires on a plane where the base substrate is located intersect the orthographic projections of the second wires on the plane where the base substrate is located; and wire widths of the first wires at intersections are smaller than at least part of wire widths of the first wires at positions other than the intersections, and/or wire widths of the second wires at intersections are greater than at least part of wire widths of the second wires at positions other than the intersections.