Thin-Film Transistor With Magnetic Field Antenna for Wireless Control

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Solution Overview

Problem

Existing thin-film transistor (TFT) devices face challenges in wireless control and signal transmission due to potential short-circuits and interference between multiple TFTs, and they lack compact designs suitable for various electronic devices, including implantable and flexible displays.

Innovation Solution

A TFT device is connected to a magnetic field antenna that allows for wireless control and signal transmission, using a subminiature magnetic field antenna to prevent short-circuits and minimize interference by adjusting the antenna's structure and frequency, enabling operation in compact sizes and various applications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a magnetic field antenna is connected to the TFT using conventional wiring, then the TFT can be controlled, but the connection wiring may cause short-circuits and deactivate the TFT

Engineering Contradiction:

ImproveTFT operation stabilityVSAvoidshort-circuit risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the conventional wired connection (mechanical/electrical contact system) with a magnetic field-based wireless control system. The magnetic field antenna transmits control signals to the TFT through magnetic coupling without physical contact, eliminating the short-circuit risk associated with conventional wiring while maintaining reliable TFT operation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The magnetic field antenna serves as an intermediary between the control source and the TFT. Instead of direct electrical connection, the antenna mediates the signal transmission through magnetic field coupling, providing isolation that prevents short-circuits while enabling reliable control of the TFT.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If multiple TFTs are provided in a display, then full colorization and high resolution are achieved, but interference occurs between the TFTs

Engineering Contradiction:

Improvedisplay resolution and color capabilityVSAvoidinterference between TFTs

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent applies local quality by assigning different magnetic field antenna structures or operating frequencies to different regions or groups of TFTs within the display. This localized differentiation allows each TFT or TFT group to operate independently without interfering with others, enabling high-resolution full-color displays while minimizing cross-TFT interference.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent utilizes parameter changes by varying the operating frequencies or structural parameters of magnetic field antennas associated with different TFTs. By tuning these parameters, the system enables multiple TFTs to operate simultaneously without mutual interference, achieving high productivity in terms of display resolution and color capability.

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If the device size is reduced for implantable or flexible applications, then versatility is improved, but the TFT may become deactivated due to short-circuit risks

Engineering Contradiction:

Improveapplication rangeVSAvoidTFT operation stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent replaces conventional wired control mechanisms with magnetic field-based wireless control, enabling significant size reduction for implantable and flexible devices. The magnetic field antenna can be miniaturized while maintaining reliable TFT operation without the short-circuit risks inherent in conventional wiring, thus improving versatility across different application forms.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The magnetic field antenna acts as an intermediary that enables compact design by eliminating the need for extensive wiring in miniaturized devices. This intermediary approach allows the TFT to be controlled reliably in space-constrained applications such as implantable devices and flexible displays without compromising operation stability.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 solution enables wireless control of TFTs, prevents deactivation due to short-circuits, and minimizes interference between multiple TFTs, allowing for compact and versatile applications in devices like implantable sensors and flexible displays.

Implementation Method 1

a magnetic field antenna spaced apart from the data line and the gate line on the base substrate, wherein the magnetic field antenna is connected to the TFT and configured to transmit and receive a signal to and from the TFT

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS10177179B2Thin-film transistor device

Publication Date: 2019.01.08 DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGY

AI summary

A thin-film transistor (TFT) device may include a data line and a gate line formed on a base substrate, a TFT connected to the data line and the gate line, and a magnetic field antenna spaced apart from the data line and the gate line on the base substrate. The magnetic field antenna may be connected to the TFT and configured to transmit and receive a signal to and from the TFT or to control a driving of the TFT.