Stacked Mesh Input Sensor Layout for Invisible Display Patterns

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Solution Overview

Problem

Existing display devices face challenges in integrating input sensors without visually noticeable sensor patterns that interfere with the display's aesthetics and functionality.

Innovation Solution

A display device with a two-layer input sensor structure where the first and second patterns of mesh lines are partially cut to ensure non-overlapping cutting areas, with the second pattern covering the first pattern and having a wider line width, minimizing light reflection differences and making the sensor patterns visually imperceptible.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single-layer sensor pattern is used, then the manufacturing process is simple, but the sensor pattern is visually recognizable and interferes with display aesthetics

Engineering Contradiction:

Improvesensor pattern structureVSAvoidvisual recognition of sensor pattern

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent transitions from a single-layer sensor pattern to a two-layer stacked structure. The first sensor pattern is positioned in a first layer and the second sensor pattern in a second layer, utilizing the vertical dimension to achieve visual concealment while maintaining electrical functionality.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The second sensor pattern is positioned to overlap with the first sensor pattern in the vertical direction, creating a nested configuration where the patterns are stacked one above the other. This nesting arrangement ensures that from a top-down view, the mesh lines of different layers do not visually overlap, making the sensor pattern imperceptible.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Reliability

If mesh lines are completely continuous, then electrical connectivity is maximized, but light reflection differences create visible patterns

Engineering Contradiction:

Improveelectrical connectivityVSAvoidlight reflection difference

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by creating cutting areas at specific locations of the mesh lines rather than uniformly cutting all mesh lines. The first cutting areas of the first mesh line and second cutting areas of the second mesh line are positioned to avoid overlapping, ensuring that light reflection characteristics remain consistent across the display surface while maintaining necessary electrical connectivity in other regions.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12547283B2Input sensor and display device including the same

Publication Date: 2026.02.10 SAMSUNG DISPLAY CO LTD

AI summary

A display device includes a display panel. An input sensor is disposed on the display panel. A first pattern of the input sensor includes mesh lines. A second pattern of the input sensor overlaps the first pattern with an insulating layer interposed therebetween, and includes mesh lines. The mesh lines of the first pattern include a first mesh line extending in the first reference direction, and the mesh lines of the second pattern include a second mesh line extending in the first reference direction and overlapping the first mesh line in a plan view. In a plan view, first cutting areas in which the first mesh line is partially cut and second cutting areas in which the second mesh line is partially cut do not overlap.