Integrated Touch Structure Layer with Embedded Color Filter

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Solution Overview

Problem

Current substrates with touch functions have complex structures and manufacturing processes, limiting their light and thin design and resulting in low touch sensitivity due to the distance between the touch structure and touch objects.

Innovation Solution

A substrate design featuring a base with a touch structure layer comprising a first electrode layer, a color filter layer, and a second electrode layer, where the color filter layer is disposed between the first and second electrode layers, simplifying the structure and improving touch sensitivity by eliminating the need for additional color filters outside the touch structure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a conventional substrate structure with separate touch structure and color filter layers is used, then the touch function and display function are achieved, but the substrate structure becomes complicated and the manufacturing process becomes complicated

Engineering Contradiction:

Improvesubstrate structure complexityVSAvoidmanufacturing process complexity

Core Design Contradiction:

Device complexityVSEase of manufacture

Solution Approach 1:

The patent combines the touch structure layer and color filter layer into a single integrated layer. The color filter is formed within the touch structure layer, merging two previously separate functional layers into one, thereby simplifying the overall substrate structure and reducing manufacturing process complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The touch structure layer is designed to serve dual purposes: it provides touch sensing functionality while simultaneously serving as the color filter layer for display functionality. This multi-functional design eliminates the need for separate dedicated layers, reducing structural complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Device complexity

Engineering Contradiction:

Improvesubstrate structure complexityVSAvoidsubstrate thickness

Core Design Contradiction:

Device complexityVSLength of moving object

Solution Approach 1:

By merging the touch structure layer and color filter layer into a single integrated layer, the patent eliminates the need for additional separate layers. This integration directly reduces the overall substrate thickness and weight while maintaining both touch and display functions.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If a conventional substrate structure with larger distance between touch structure and touch object is used, then the structural stability is maintained, but the touch sensitivity becomes low

Engineering Contradiction:

Improvestructural stabilityVSAvoidtouch sensitivity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The integration of the color filter within the touch structure layer allows for optimized positioning of touch-sensitive elements closer to the touch surface while maintaining structural stability through the integrated design, thereby improving touch sensitivity without compromising structural integrity.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11366537B2Substrate including touch structure layer, manufacturing method thereof and display device

Publication Date: 2022.06.21 MIANYANG BOE OPTOELECTRONICS TECH CO LTD

AI summary

A substrate, and the substrate includes a base and a touch structure layer are provided. The substrate includes a base and a touch structure layer, the touch structure layer is disposed on the base and includes a first electrode layer, a color filter layer and a second electrode layer laminated on the base, and the color filter layer is disposed between the first electrode layer and the second electrode layer.