Electrochromic Mirror Touch Layout for Clear Rearview Control
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Solution Overview
Problem
Existing electrochromic rearview mirrors face challenges in providing an accessible control interface that does not obstruct the driver's view, and there is a need to enhance the functionality of wing mirrors with electrochromic material.
Innovation Solution
An electrochromic mirror module with a visible surface that integrates an opaque touch sensing layer and an electrochromic device, where the touch sensing layer is positioned on the periphery to allow for control functions without obstructing the viewing area, and includes a design that separates the touch sensing and electrochromic device areas to prevent interference, enabling easy operation and enhanced functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If switch and buttons are located on the reflective surface, then they are easy to reach, but they block the rearview vision of the driver
Solution Approach 1:
The patent segments the reflective surface into functionally distinct areas: a first area dedicated to the electrochromic device and a second area for touch-sensitive control switches. This spatial segmentation ensures that controls are positioned in a location that does not obstruct the driver's rearview vision, as the control area is separated from the primary viewing zone.
Solution Approach 2:
The patent applies different functional properties to different regions of the mirror surface. The first area maintains high reflectivity for electrochromic operation, while the second area incorporates touch-sensitive switches with minimal visual impact. This local differentiation allows controls to be accessible without compromising the overall rearview vision quality.
2Device complexity
If the touch sensing layer and electrochromic device are positioned on the same area, then the structure is simplified, but the conductive coatings interfere with the touch sensor
Solution Approach 1:
The patent spatially segments the touch sensing layer and electrochromic device into different areas on the reflective surface. The touch-sensitive switches are positioned in a second area while the electrochromic device occupies a first area, ensuring that conductive coatings for the electrochromic device do not interfere with the touch sensor's capacitive sensing function in the control area.
Solution Approach 2:
The patent introduces a non-conductive intermediary layer or spacing between the electrochromic device area and the touch sensor area. This separation acts as a mediator that prevents electrical interference from the electrochromic conductive coatings while allowing the touch sensor to function independently in its designated zone.
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 provides an unobstructed view while allowing for easy control of the electrochromic device, improving driving safety and functionality by separating the touch sensing and electrochromic areas, thus enhancing the usability and safety of the electrochromic mirror module.
Implementation Method 1
An electrochromic mirror module is disclosed. The electrochromic mirror module can provide a visible surface. The electrochromic mirror module can be applied to a vehicle as a rear-view mirror or a wing mirror
Implementation Method 2
an user input area where the opaque touch sensing layer is disposed and an area where the electrochromic device is disposed are different so that the user input area is substantially devoid of metallic and/or conductive coatings such that the conductive coatings of the mirror reflective element are not at the user input area and do not interfere with the touch sensor
Data Source
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AI summary
An electrochromic mirror module including a light-transmissive substrate, an opaque touch sensing layer and an electrochromic device is provided. The light-transmissive substrate has a visible surface and a back surface disposed opposite to the visible surface. The opaque touch sensing layer and the electrochromic layer are disposed on the back surface. Distribution areas of the opaque touch sensing layer and the electrochromic layer are different on the back surface. An electrochromic mirror module including reflective layer and electrochromic device is also provided.