Touchscreen Substrate Conductive Wire Extraction
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Solution Overview
Problem
Conventional touchscreen manufacturing methods are complex, result in low yield rates, and increase costs due to the need for precise configuration of sensing pattern and conductive wire layers, especially as higher resolutions are required.
Innovation Solution
A touchscreen design featuring substrates with sensing patterns and conductive wires formed on one surface, connected via a conductive component, and bonded with an adhesive layer, simplifying the manufacturing process and reducing material usage, while using a monolayer printed circuit board to conduct signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods form sensing pattern layers and conductive wire layers on both substrates with precise configuration, then touchscreen functionality is achieved, but manufacturing complexity increases and yield rate decreases
Solution Approach 1:
The patent extracts the conductive wire formation process from one substrate and relocates it to the other substrate. Specifically, conductive wires are formed only on the first substrate to connect sensing patterns, while the second substrate contains only sensing patterns without conductive wires. This extraction simplifies the manufacturing process and reduces the precision requirements for layer configuration.
Solution Approach 2:
The patent changes the dimensional distribution of conductive components by moving the conductive wire layer from a bilateral configuration (both substrates) to a unilateral configuration (one substrate). This dimensional reorganization reduces the number of layers that require precise alignment and configuration.
2Measurement precision
If higher resolution is requested for touchscreen, then sensing pattern line width and line space must be reduced, but manufacturing precision requirements increase and yield rate decreases
Solution Approach 1:
By extracting the conductive wire formation from one substrate, the patent reduces the number of layers requiring high-precision configuration. This allows the sensing patterns to be optimized for higher resolution without the compounding precision requirements of multiple conductive wire layers.
3Reliability
If conductive wires are formed on both substrates, then complete electrical connection is achieved, but material usage increases and manufacturing cost increases
Solution Approach 1:
The patent extracts the conductive wire formation process from one substrate, eliminating redundant conductive material usage. Conductive wires are formed only on the first substrate, reducing material consumption while maintaining electrical connection functionality through the adhesive layer's conductive properties.
Solution Approach 2:
The adhesive layer serves multiple functions: it bonds the two substrates together and simultaneously provides conductive properties for electrical connection. This multi-functionality eliminates the need for separate conductive wire layers on both substrates, reducing material usage while maintaining connection reliability.
Data Source
AI summary
Embodiments of this invention provide touch panel display, touchscreen and their producing method. In an embodiment, the touch panel display comprises a display and a touchscreen, which comprises two substrates, whose surface respectively comprise sensing patterns. In addition, conductive circuits are arranged at one of the two substrates, to connect the sensing patterns by direct or indirect manner.