Film-Type Microstrip Patch Antenna for Display Visibility and 5G Impedance

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Solution Overview

Problem

Conventional microstrip patch antennas are visible on screen display areas and suffer from high signal loss and performance deterioration in high-frequency environments like 5G due to poor impedance matching.

Innovation Solution

A film-type microstrip patch antenna is designed with a base film, microstrip transmission line unit, radiating patch unit, and ground unit, where the microstrip transmission line has a resistance of 70Ω to 230Ω, and the units are made of materials like copper or silver, with a mesh structure, to ensure precise impedance matching and visibility concealment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a conventional microstrip patch antenna is formed on a printed circuit board, then the antenna can be fabricated easily, but the antenna components become unnecessarily visible to the user on the screen display area

Engineering Contradiction:
Improveantenna fabricationVSAvoidvisibility of antenna components
Core Design Contradiction:
Ease of manufactureVSIllumination intensity

Solution Approach 1:

The patent applies this principle by transitioning from a rigid printed circuit board substrate to a flexible thin film substrate for antenna fabrication. The thin film substrate can be integrated into the display structure without interfering with the display area, making the antenna components invisible to users while maintaining ease of fabrication through similar manufacturing processes

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The patent moves the antenna from the traditional planar printed circuit board layout to a three-dimensional integration within the display structure. By embedding the antenna elements within the display's layered construction, the antenna becomes invisible from the user's perspective while retaining its functional characteristics

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If a microstrip transmission line is used in a high-frequency environment such as 5G, then the antenna can be implemented, but signal loss becomes high and performance deteriorates due to poor impedance matching

Engineering Contradiction:
Improvehigh-frequency band applicabilityVSAvoidsignal loss
Core Design Contradiction:
Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The patent applies this principle by optimizing key parameters of the microstrip transmission line including characteristic impedance, conductor width, substrate thickness, and dielectric constant. These parameter adjustments are specifically tailored to minimize signal loss and achieve proper impedance matching for high-frequency 5G operations, transforming the transmission line's electrical characteristics to suit the demanding high-frequency environment

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent incorporates impedance matching networks and tuning elements that provide feedback mechanisms to optimize signal transmission. By including adjustable matching circuits and reflective elements, the system can adapt to frequency variations and minimize signal loss through iterative impedance optimization, ensuring stable performance across the 5G frequency band

Inventive Principle:
Principle #23Feedback

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

The film-type antenna is implemented on screen displays, preventing visibility and maintaining stable performance in high-frequency environments by achieving optimal impedance matching, thus supporting 3G to 5G mobile communication.

Implementation Method 1

a resistance of the microstrip transmission line unit may be 70Ω or more and 230Ω or less

Methodology Applied
Scientific EffectImpedance matching: Electrical Impedance Tomography

Implementation Method 2

a radiating patch unit formed on the one surface of the base film to be electrically connected to the microstrip transmission line unit

Methodology Applied
Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Data Source

PatentUS10944161B2Film-type microstrip patch antenna
Publication Date: 2021.03.09 DONGWOO FINE CHEM CO LTD
  • US10944161B2 patent drawing
  • US10944161B2 patent drawing
  • US10944161B2 patent drawing

AI summary

The present invention relates to a film-type microstrip patch antenna. The present invention comprises: a base film; a microstrip transmission line part formed on one surface of the base film; a radiation patch part formed on the one surface of the base film so as to be electrically connected to the microstrip transmission line part; and a ground part formed on the other surface of the base film. The present invention can be implemented in a screen display area of a display device, be applied to a high-frequency band for 3G to 5G mobile communication, and prevent the moire phenomenon caused by components of an antenna, thereby improving the optical characteristics of the display device mounted with the antenna.