Touch-Control Structure With Narrowed Lead Wires for Signal Uniformity
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Solution Overview
Problem
Current touch-control display panels suffer from low accuracy due to varying load and signal impedance differences among lead wires, which are exacerbated by limited wiring space in the peripheral region, affecting the precision of touch-control operations.
Innovation Solution
A touch-control structure with lead wires featuring narrowing portions and insulation design, including first and second lead wires connected to touch-control electrodes, where the cross section of at least part of the first lead wires is reduced to increase resistance uniformity, and insulation is provided to prevent short circuits and improve signal uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If lead wires are arranged in limited peripheral space, then wiring space utilization is improved, but resistance uniformity deteriorates due to varying lead wire lengths
Solution Approach 1:
The patent applies local quality by introducing narrowing portions at specific locations along the lead wires. These narrowing portions locally increase the resistance of individual lead wires to compensate for length differences, thereby achieving uniform total resistance across all lead wires while maintaining compact peripheral wiring space.
Solution Approach 2:
The patent changes the physical parameter of the lead wire cross-sectional area by introducing narrowing portions. This parameter change allows precise control of individual lead wire resistance values, enabling resistance uniformity to be achieved despite variations in lead wire lengths caused by different routing paths in the limited peripheral space.
2Adaptability or versatility
If lead wire lengths vary to reach binding portion, then connection flexibility is improved, but signal impedance uniformity deteriorates
Solution Approach 1:
The patent applies local quality by introducing narrowing portions at specific locations along the lead wires. These narrowing portions locally increase the resistance of individual lead wires to compensate for length differences, thereby achieving uniform total resistance across all lead wires while maintaining compact peripheral wiring space.
Solution Approach 2:
The patent changes the physical parameter of the lead wire cross-sectional area by introducing narrowing portions. This parameter change allows precise control of individual lead wire resistance values, enabling resistance uniformity to be achieved despite variations in lead wire lengths caused by different routing paths in the limited peripheral space.
Data Source
AI summary
A touch-control structure includes: a plurality of first touch-control electrodes, a plurality of second touch-control electrodes, a plurality of first lead wires and a plurality of second lead wires; the first touch-control electrodes are insulated from the second touch-control electrodes; at least a part of the first lead wires includes main body portions and narrowing portions connected to each other along an extension path of the first lead wires, and a cross section of at least a part of the narrowing portions is smaller than a cross section of the main body portions; and the narrowing portions are all located in the edge region; a distance between each of the narrowing portions and the lead-out region in the second direction is increased or decreased along a direction away from the touch-control region.