Single-Film Touch Panel with Partitioned Sensing Areas
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Solution Overview
Problem
Conventional touch location detecting panels with separate vertical and horizontal sensing layers increase manufacturing costs and lamination thickness, and are limited by the number of channels in the touch detecting circuit, leading to higher costs and reduced productivity.
Innovation Solution
A touch location detecting panel with a simplified layer structure, where both vertical and horizontal location sensing patterns are arranged two-dimensionally on a single film, with partitioned areas electrically isolated and connected to separate channels of a touch detecting circuit, allowing for efficient detection of touch locations using a limited number of channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If separate vertical and horizontal sensing layers are used, then the number of connection lines is minimized, but the lamination thickness increases and manufacturing cost increases
Solution Approach 1:
The patent merges the vertical and horizontal sensing patterns into a single film layer, eliminating the need for separate sensing layers. This combining approach reduces the overall lamination thickness while maintaining the functionality of detecting both vertical and horizontal touch locations through a unified sensing structure with partitioned areas.
Solution Approach 2:
The patent arranges sensing areas in a two-dimensional grid pattern on a single film, where partitioned areas are configured to detect touches in both vertical and horizontal directions simultaneously. This dimensional arrangement allows the single layer to perform the function of multiple layers by utilizing spatial partitioning within the same plane.
2Device complexity
If separate vertical and horizontal sensing layers are used, then the number of connection lines is minimized, but manufacturing cost increases
Solution Approach 1:
The patent combines multiple sensing functions into a single film layer, reducing the total number of layers that need to be manufactured and assembled. This merger decreases manufacturing complexity and cost while maintaining the ability to detect touch locations in both vertical and horizontal directions through the partitioned sensing areas.
Solution Approach 2:
The single film with partitioned sensing areas serves multiple functions: it detects both vertical and horizontal touch locations, provides electrical isolation between sensing channels, and maintains a simplified structure. This multi-functionality in a single component reduces the need for multiple specialized layers, thereby lowering manufacturing costs.
3Ease of manufacture
If sensing areas are arranged on a single film, then manufacturing cost is reduced, but the number of channels in touch detecting circuit becomes a limiting factor
Solution Approach 1:
The patent segments the sensing areas into partitioned regions within a single film, where each partitioned area can be independently connected to separate channels. This segmentation allows efficient utilization of available circuit channels by organizing sensing areas into groups that can be detected through multiple channels simultaneously, overcoming the channel limitation while maintaining a cost-effective single-film structure.
Solution Approach 2:
The patent utilizes a two-dimensional arrangement of partitioned sensing areas on a single film, allowing multiple sensing zones to be activated and detected through different channels. This spatial dimensionality enables the system to overcome channel limitations by activating multiple channels in parallel to detect touches across different partitioned areas simultaneously.
Data Source
AI summary
The present invention relates to a touch location detecting panel and, more particularly, to a touch location panel having a plurality of sensing areas arranged two-dimensionally. The touch location detecting panel of the invention has on a surface at one side of a single film a plurality of sensing areas arranged two-dimensionally. Each of the sensing areas includes a plurality of partitioned areas electrically isolated from each other, and the partitioned areas are respectively connected to separate channels of a circuit for detecting a user's touch on each of the partitioned areas. Accordingly, durability and productivity of the touch location detecting panel can be improved by simplifying the panel structure.