Rearview Mirror Capacitive Touch Zone for Integrated User Controls

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Solution Overview

Problem

Current rearview assemblies for vehicles lack intuitive and versatile control interfaces for interacting with rearview systems, limiting user functionality and convenience.

Innovation Solution

Integration of a capacitive touch zone with a conductive component extending beyond the peripheral edge of a circuit board, allowing for activation of features like compass display, Bluetooth pairing, and signal generation, enhancing user interaction with the rearview system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional control interfaces are used in rearview assemblies, then the device structure remains simple, but user functionality and interaction versatility are limited

Engineering Contradiction:
Improveuser functionalityVSAvoiddevice structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines the capacitive touch interface with the housing structure itself, integrating the conductive component into the housing rather than adding a separate control panel. This merging approach enhances user functionality by providing an intuitive touch interface while avoiding the complexity of separate control mechanisms.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The capacitive touch zone serves multiple functions including compass display activation, Bluetooth pairing initiation, and signal generation. This multi-functionality is achieved through a single integrated touch interface that can detect different touch patterns and locations to trigger various rearview system functions, thereby improving versatility without proportionally increasing device complexity.

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

2Ease of operation

If no control interface is provided, then the device structure remains simple, but ease of operation deteriorates

Engineering Contradiction:
Improveuser interactionVSAvoidcontrol interface
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The capacitive touch interface leverages the housing structure itself as the interactive element, allowing the housing to serve both its structural function and as the control interface. This self-service approach eliminates the need for separate buttons or controls, improving ease of operation while keeping the overall device structure relatively simple.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces traditional mechanical control elements (buttons, switches) with a capacitive touch interface that detects electrical field changes from user contact. This substitution provides more intuitive and responsive user interaction while reducing mechanical complexity in the control system.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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

Provides a user-friendly interface for controlling various rearview system functions, enhancing user experience and convenience by enabling intuitive input methods such as capacitive touch inputs.

Implementation Method 1

a capacitive touch zone on a surface of the housing, the capacitive touch zone comprising a conductive component mounted to the circuit board

Methodology Applied
Scientific EffectCapacitive touch: Capacitance

Data Source

PatentUS12017586B2Rearview assembly having capacitive touch zone
Publication Date: 2024.06.25 GENTEX CORP
  • US12017586B2 patent drawing
  • US12017586B2 patent drawing
  • US12017586B2 patent drawing

AI summary

A rearview assembly for a vehicle is provided that includes: a housing; a rearview element configured to display images of a scene to the rear of the vehicle, the rearview element disposed in the housing; a circuit board mounted in the housing behind the rearview element, the circuit board having a substantially planar surface and a peripheral edge; and a capacitive touch zone on a surface of the housing, the capacitive touch zone comprising a conductive component mounted to the circuit board, wherein the conductive component comprises a first portion mounted to the planar surface of the circuit board and a second portion extending beyond the peripheral edge of the circuit board at an angle to the planar surface.