Display Assembly Support Structure for Low-Coupling Antenna Layout

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Solution Overview

Problem

Existing electronic devices face performance limitations due to the inclusion of multiple components in compact designs, which can lead to capacitive coupling between components like display panels and printed circuit boards, resulting in antenna performance losses.

Innovation Solution

A display assembly with a support structure that includes an electrically conductive element, such as a metallic trace, positioned between the display panel and the printed circuit board, reducing the gap between these components to mitigate capacitive coupling and enhance antenna performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the gap between the display panel and printed circuit board is reduced to less than 300 microns, then antenna performance is improved by mitigating capacitive coupling, but device complexity increases due to the need for specialized support structures

Engineering Contradiction:
Improveantenna performanceVSAvoidsupport structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The support structure combines multiple functions into a single component: it provides mechanical support for the display panel, maintains the optimized gap distance of less than 300 microns, and includes integrated electrically conductive elements (metallic traces) that serve as antenna elements. This merging eliminates the need for separate antenna components and support structures, reducing overall device complexity while improving antenna performance.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The support structure is designed as a multi-functional element that simultaneously performs structural support, gap maintenance, and wireless communication functions through its integrated conductive traces. This universal design allows a single component to address multiple requirements, simplifying the overall device architecture while achieving the desired antenna performance.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple components are included in compact device designs to enhance functionality, then device functionality is improved, but capacitive coupling between components increases causing antenna performance losses

Engineering Contradiction:
Improvedevice functionalityVSAvoidantenna performance
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The support structure with its specific gap distance of less than 300 microns and integrated conductive elements acts as an intermediary between the display panel and printed circuit board. This intermediary design manages the electromagnetic field interactions between components, reducing unwanted capacitive coupling while maintaining necessary device functionality and enabling effective antenna operation.

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

This configuration reduces antenna performance losses caused by capacitive coupling, allowing for improved battery life, reduced device size, and optimized antenna performance while maintaining or enhancing overall device functionality.

Implementation Method 1

capacitive coupling between components like display panels and printed circuit boards, resulting in antenna performance losses

Methodology Applied
Scientific EffectCapacitive coupling: Capacitance

Data Source

PatentUS11785719B2Electronic device
Publication Date: 2023.10.10 APPLE INC
  • US11785719B2 patent drawing
  • US11785719B2 patent drawing
  • US11785719B2 patent drawing

AI summary

A display assembly for an electronic device can include a printed circuit board, a display panel, and a support structure affixed to the display panel and disposed between the display panel and the printed circuit board.