Terahertz Packaging Structure With Reflective Frame for Noise Control

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Solution Overview

Problem

Current terahertz devices lack a suitable packaging structure for modularization, which affects their reliability and emission/reception quality due to exposure to environmental factors and interference.

Innovation Solution

A terahertz device with a packaging structure featuring a terahertz element, a conductive frame-shaped member with a reflective surface, and a sealing resin, allowing for modularization and improved emission/reception quality by reducing noise and increasing gain through resonant reflection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a terahertz element is exposed to the environment for modularization, then ease of manufacture and device assembly are improved, but reliability deteriorates due to environmental influences and interference

Engineering Contradiction:
Improvemodularization capabilityVSAvoidelement protection from environmental factors
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The terahertz element is nested within a packaging structure that includes a resin layer and a reflective plate. This nested configuration protects the element while maintaining modularization, as the entire packaged element can be treated as a single module for assembly purposes.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

A reflective plate is introduced as an intermediary component between the terahertz element and the external environment. This plate reflects electromagnetic waves and prevents direct interference with the element, thereby improving reliability without compromising modularization capability.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If a packaging structure is added to protect the terahertz element, then reliability is improved, but device complexity increases

Engineering Contradiction:
Improveelement protectionVSAvoidpackaging structure components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The packaging structure uses a nested configuration where the reflective plate is positioned within the resin layer, creating a compact multi-layer structure. This nesting approach protects the element while minimizing the overall increase in device complexity through space-efficient design.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The resin layer acts as a flexible protective shell that encapsulates the terahertz element and reflective plate. This thin-film approach provides comprehensive protection without adding significant structural complexity or bulk to the device.

Inventive Principle:
Principle #30Flexible shells and thin films

3Power

If a reflective surface is added to improve emission and reception quality, then gain is increased through resonant reflection, but device complexity increases

Engineering Contradiction:
Improveemission and reception gainVSAvoidreflective surface structure
Core Design Contradiction:
PowerVSDevice complexity

Solution Approach 1:

The reflective plate is nested within the resin layer at a specific distance from the terahertz element, creating a resonant cavity structure. This nested configuration achieves enhanced emission and reception quality through resonant reflection while maintaining a compact design that limits complexity increase.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The reflective plate converts potentially harmful electromagnetic interference and wave dissipation into beneficial resonant reflection. By reflecting waves back toward the element, the structure transforms energy loss into gain, improving power efficiency without requiring complex active components.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

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 proposed packaging structure enhances the reliability and performance of terahertz devices by protecting the element from environmental influences and reducing interference, while improving the emission and reception of terahertz waves.

Implementation Method 1

the frame-shaped member has a reflective surface capable of reflecting the terahertz waves

Methodology Applied
Scientific EffectReflection: Reflection

Implementation Method 2

increasing gain through resonant reflection

Methodology Applied
Scientific EffectResonance: Resonance

Data Source

PatentUS11894494B2Terahertz device and production method for terahertz device
Publication Date: 2024.02.06 ROHM CO LTD
  • US11894494B2 patent drawing
  • US11894494B2 patent drawing
  • US11894494B2 patent drawing

AI summary

A terahertz device includes a terahertz element, a sealing resin, a wiring layer and a frame-shaped member. The terahertz element that performs conversion between terahertz waves and electric energy. The terahertz element has an element front surface and an element back surface spaced apart from each other in a first direction. The sealing resin covers the terahertz element. The wiring layer is electrically connected to the terahertz element. A frame-shaped member is made of a conductive material and arranged around the terahertz element as viewed in the first direction. The frame-shaped member has a reflective surface capable of reflecting the terahertz waves.