Integrated Touch Display Device with Overlapping Conductive Layers

Solution Overview

Problem

Touch display devices face reliability issues due to the thickness added by touch panels, which can peel off under external forces and restrict flexibility, compromising mechanical properties and functionality.

Innovation Solution

A touch display device design featuring a substrate with a conductive line and insulating layer, where the conductive line is disposed on the substrate with different extension directions, allowing for both display and touch sensing functions in bending portions without the need for adhesive attachment, thus enhancing reliability and compactness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a touch panel is attached onto a display panel through an adhesive layer, then the touch sensing function and image displaying function are integrated, but the thickness of the electronic device increases and the reliability deteriorates

Engineering Contradiction:

Improveintegration of touch sensing function and image displaying functionVSAvoidreliability of electronic device

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent merges the touch sensing function and image displaying function into a single integrated touch display device. The touch panel and display panel are combined such that the touch-sensitive layer is formed directly on the display panel without requiring a separate adhesive layer, achieving functional integration while eliminating the adhesive interface that causes reliability issues.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent extracts and eliminates the adhesive layer from the structure. By removing the adhesive layer that connects the touch panel to the display panel, the patent eliminates the source of peeling and reliability problems while maintaining the integrated functionality through direct formation of the touch-sensitive layer on the display panel.

Inventive Principle:

Principle #2Taking out (Extraction)

2Adaptability or versatility

If a touch panel is attached onto a display panel through an adhesive layer, then the touch sensing function and image displaying function are integrated, but the thickness of the electronic device increases

Engineering Contradiction:

Improveintegration of touch sensing function and image displaying functionVSAvoidthickness of electronic device

Core Design Contradiction:

Adaptability or versatilityVSLength of stationary object

Solution Approach 1:

The patent merges the touch sensing function and image displaying function into a single integrated touch display device. The touch panel and display panel are combined such that the touch-sensitive layer is formed directly on the display panel without requiring a separate adhesive layer, achieving functional integration while eliminating the adhesive interface that causes reliability issues.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent extracts and eliminates the adhesive layer from the structure. By removing the adhesive layer that connects the touch panel to the display panel, the patent eliminates the source of peeling and reliability problems while maintaining the integrated functionality through direct formation of the touch-sensitive layer on the display panel.

Inventive Principle:

Principle #2Taking out (Extraction)

3Adaptability or versatility

If a touch panel is attached onto a display panel through an adhesive layer, then the touch sensing function and image displaying function are integrated, but the flexibility and mechanical properties deteriorate

Engineering Contradiction:

Improveintegration of touch sensing function and image displaying functionVSAvoidmechanical property such as flexibility

Core Design Contradiction:

Adaptability or versatilityVSStrength

Solution Approach 1:

The patent merges the touch sensing function and image displaying function into a single integrated touch display device. The touch panel and display panel are combined such that the touch-sensitive layer is formed directly on the display panel without requiring a separate adhesive layer, achieving functional integration while eliminating the adhesive interface that causes reliability issues.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent extracts and eliminates the adhesive layer from the structure. By removing the adhesive layer that connects the touch panel to the display panel, the patent eliminates the source of peeling and reliability problems while maintaining the integrated functionality through direct formation of the touch-sensitive layer on the display panel.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS20240045534A1Electronic device and touch device

Publication Date: 2024.02.08 RED OAK INNOVATIONS LTD

AI summary

An electronic device including a substrate, a first conductive layer, an insulating layer, and a second conductive layer is provided. The first conductive line is disposed on the substrate. The insulating layer is disposed on the first conductive layer. The second conductive layer is disposed on the insulating layer. In a cross-sectional view of the electronic device, the first conductive layer extends under the second conductive layer, and portion of the first conductive layer is overlapped with the second conductive layer and another portion of the first conductive layer is not overlapped with the second conductive layer.