Continuous Polygonal Touch Electrode Structure for Shape Adaptability

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Solution Overview

Problem

The design and manufacturing of touch panels with varying shapes require complex and costly touch electrode structures, as existing solutions are not adaptable to different shapes, leading to increased design duration and production costs.

Innovation Solution

A touch electrode structure comprising a plurality of electrodes connected end to end to form a continuous polygonal line, allowing for a single-layer design applicable to any shape, including circular, oval, rectangular, and irregular shapes, with break points within the marginal region, and optionally using metal or Transparent Conducting Oxide materials, which simplifies manufacturing and enhances touch control accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional touch electrode structures are designed for different shapes, then the touch panel can accommodate various application fields, but the design duration becomes long and manufacturing cost increases

Engineering Contradiction:
Improveadaptability to different shapesVSAvoiddesign duration
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent applies a universal touch electrode structure consisting of a continuous polygonal line that can be configured in different patterns (e.g., interdigitated, comb-like) to serve multiple touch panel shapes and applications. This single versatile design replaces the need for creating separate electrode structures for each shape, thereby reducing design duration while maintaining adaptability to circular, rectangular, and irregular shapes.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If traditional touch electrode structures are designed for different shapes, then the touch panel can accommodate various application fields, but the manufacturing cost becomes high

Engineering Contradiction:
Improveadaptability to different shapesVSAvoidmanufacturing cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The continuous polygonal line electrode structure serves as a universal design that can be manufactured using the same process across different touch panel shapes. By standardizing the electrode configuration approach and reducing the need for shape-specific designs, manufacturing complexity decreases and cost is reduced while maintaining versatility.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Measurement precision

If multiple touch electrode structures are used for multi-point touch control, then touch control accuracy is improved, but device complexity increases

Engineering Contradiction:
Improvetouch control accuracyVSAvoidelectrode structure complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the continuous polygonal line into multiple electrode segments or groups that can independently detect touch points. This segmentation allows the system to identify multiple touch points simultaneously while maintaining a relatively simple overall structure based on the continuous polygonal line configuration, thus achieving multi-point touch control accuracy without excessive complexity.

Inventive Principle:
Principle #1Segmentation

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 solution reduces design duration and manufacturing costs while enabling single-point or multi-point touch control functions with high accuracy, applicable to various shapes and flexible displays, such as mobile devices and smartwatches, with a simplified terminal connection system.

Implementation Method 1

the touch chip is for loading a touch signal onto one of the two of the touch electrodes positioned in both ends of the polygonal line of the touch electrode structure and detecting a voltage signal, that is coupled to the touch signal, transmitted on the other of the two of the touch electrodes

Methodology Applied
Scientific EffectElectrical signal transmission: Conduction (electrical)

Data Source

PatentUS10401989B2Touch electrode structure, touch panel and display apparatus
Publication Date: 2019.09.03 BOE TECHNOLOGY GROUP CO LTD
  • US10401989B2 patent drawing
  • US10401989B2 patent drawing
  • US10401989B2 patent drawing

AI summary

The present disclosure discloses a touch electrode structure, a touch panel and a display apparatus. In one embodiment, the touch electrode structure includes a plurality of touch electrodes disposed in a same layer, and the touch electrodes are connected end to end and sequentially to form a continuous polygonal line. This touch electrode structure may be applicable to touch panels of any shapes, which may reduce a design duration of the touch electrode structure and the cost of manufacturing the touch panel.