Antenna Stack Structure for Display Devices

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Solution Overview

Problem

The challenge is to design an antenna structure for display devices that maintains sufficient radiation and optical properties while minimizing interference with other functional structures and avoiding increased thickness and visibility, especially as display devices become smaller.

Innovation Solution

The antenna stack structure includes a protective layer with an antenna electrode layer formed directly on it, featuring a first electrode layer and a second electrode layer with lower reflectance, using copper-oxygen-containing composite materials, and is integrated with a polarizing layer and adhesive layers to enhance radiation and optical performance without increasing thickness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an antenna is combined with the display device to provide communication function, then wireless communication capability is improved, but the antenna may be recognized by a user to degrade image quality

Engineering Contradiction:

Improvewireless communication capabilityVSAvoidimage quality degradation

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies an anti-reflective coating on the antenna electrode layer to change its optical properties. The coating reduces reflectance and makes the antenna invisible or less visible in the display area, thereby preventing image quality degradation while maintaining wireless communication functionality

Inventive Principle:

Principle #32Color changes

Solution Approach 2:

The patent introduces an anti-reflective coating as an intermediary layer between the antenna electrode and the display surface. This intermediary layer mediates the conflict by allowing the antenna to function while preventing it from being visually recognized, thus resolving the contradiction between communication capability and image quality

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If additional film or structure is formed to insert the antenna, then antenna function is achieved, but overall thickness and volume of the display device may be increased

Engineering Contradiction:

Improveantenna functionVSAvoidthickness

Core Design Contradiction:

Adaptability or versatilityVSLength of stationary object

Solution Approach 1:

The patent merges the antenna electrode layer with existing display device layers, forming the antenna within the existing stack structure rather than adding separate antenna components. This integration approach achieves antenna function without increasing overall device thickness

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent positions the antenna electrode layer within the existing multi-layer structure of the display device, utilizing the vertical stacking dimension. By embedding the antenna in the existing layer stack rather than adding it as a separate external component, the design achieves antenna functionality without increasing the device's overall thickness

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Power

If antenna electrode layer with high reflectance is used, then radiation properties are improved, but visibility of the antenna is increased

Engineering Contradiction:

Improveradiation intensityVSAvoidantenna visibility

Core Design Contradiction:

PowerVSObject-affected harmful factors

Solution Approach 1:

Inventive Principle:

Principle #32Color changes

Solution Approach 2:

The patent changes the optical parameters of the antenna electrode layer by applying an anti-reflective coating with specific refractive index and thickness. This parameter change reduces the reflectance of the antenna surface, making it less visible while preserving the underlying high-reflectance metal layer for radiation purposes

Inventive Principle:

Principle #35Parameter changes

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 configuration improves radiation intensity and sensitivity while preventing signal loss and reducing visibility of the antenna, maintaining optimal optical and gain properties without increasing the overall thickness of the display device.

Implementation Method 1

a second electrode layer formed on the first electrode layer, the second electrode layer having a lower reflectance than that of the first electrode layer

Methodology Applied

Scientific EffectReflectance: Reflection

Data Source

PatentUS20220393335A1Antenna stack structure and display device including the same

Publication Date: 2022.12.08 DONGWOO FINE CHEM CO LTD

AI summary

An antenna stack structure according to an embodiment includes a protective layer, and an antenna electrode layer formed directly on a surface of the protective layer. The antenna electrode layer includes a first electrode layer and a second electrode layer having a lower reflectance than that of the first electrode layer. A visual recognition of electrode are prevented by the second electrode layer.