Bendable Touch Window With Segmented Substrates

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Solution Overview

Problem

Current touch windows lack flexibility, limiting user experience and portability, as they are not easily bendable or adaptable to various screen sizes.

Innovation Solution

A touch window design featuring a first fixed area and a second bendable area, where the second area can be warped or bent from the first, allowing for a wide screen when in use and a compact size when carried, utilizing different materials for the sensing electrodes and wires to ensure visibility and flexibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a touch window uses a rigid structure to maintain screen integrity, then display quality and stability are improved, but flexibility and portability deteriorate

Engineering Contradiction:

Improvescreen integrityVSAvoidflexibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The touch window is divided into a first area with a first substrate and a second area with a second substrate, allowing different regions to have different properties. The first area maintains rigidity for display quality while the second area provides flexibility for portability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different substrates are used in different areas of the touch window. The first substrate in the first area is optimized for display quality with rigid properties, while the second substrate in the second area is optimized for flexibility with bendable properties, allowing each region to have the quality it needs.

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If a touch window is made flexible to improve portability, then ease of carrying is improved, but manufacturing complexity increases

Engineering Contradiction:

ImproveportabilityVSAvoidmanufacturing complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The touch window structure is segmented into distinct first and second areas with different substrates, allowing the flexible second area to be manufactured separately and then integrated with the first area, simplifying the overall manufacturing process compared to making the entire window flexible.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The second substrate is designed as a flexible thin film structure that can be bent without breaking, enabling portability while using standard flexible manufacturing techniques for thin films, which are well-established in the industry.

Inventive Principle:

Principle #30Flexible shells and thin films

3Measurement precision

If sensing electrodes use opaque materials to ensure detection accuracy, then sensing precision is improved, but visual quality deteriorates

Engineering Contradiction:

Improvesensing accuracyVSAvoidvisual quality

Core Design Contradiction:

Measurement precisionVSIllumination intensity

Solution Approach 1:

The sensing electrodes are made from transparent conductive materials that combine the properties of transparency (for visual quality) and electrical conductivity (for sensing accuracy), eliminating the need to choose between opaque materials for sensing and transparent materials for display.

Inventive Principle:

Principle #40Composite materials

Data Source

PatentEP2843519B1Touch window and touch device including the same

Publication Date: 2017.05.31 LG INNOTEK CO LTD

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AI summary

Disclosed are a touch window and a touch device including the same. The touch window includes first and second areas, wherein the second area is bentable from the first area.