Electrochrome Polymer Hearing Aid Housing for Status Indication
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Solution Overview
Problem
Conventional hearing aids face challenges in providing high-quality and visually appealing representation of status information due to limitations in electrophoretic displays, such as low pixel size and unattractive thickness, as well as high power consumption and manufacturing costs associated with LCD displays.
Innovation Solution
The use of electrochrome polymers and organic light-emitting diodes (OLEDs) in the hearing aid housing allows for low-cost, energy-efficient, and robust visual representation of information, enabling fine structures on curved surfaces with low power draw, and providing high contrast and customizable symbols for status indication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If electrophoretic displays are used for status information reproduction, then the hearing aid can display operating state information, but the display quality is poor and the minimum pixel size is relatively large
Solution Approach 1:
The patent applies electrochrome polymer that changes color in response to electrical excitation to display status information. Different colors indicate different operating states, providing clear visual feedback while avoiding the pixelation issues of electrophoretic displays. The color-changing material is applied as a thin, homogeneous layer that can be manufactured at low cost.
2Loss of information
If electrophoretic displays are used, then status information can be displayed, but the hearing aid becomes visually unattractive due to thickness and additional layer formation
Solution Approach 1:
The electrochrome polymer is applied as a thin coating layer on the housing surface rather than using thick electrophoretic display capsules. This color-changing layer provides status information while maintaining the aesthetic appearance and thin profile of the hearing aid housing.
3Loss of information
If LCD displays are used for status information, then information can be reproduced, but power consumption is high
Solution Approach 1:
The electrochrome polymer requires minimal electrical excitation to change color and maintain its state. Unlike LCD displays that require continuous power to maintain the display state, the electrochrome polymer uses very low power, extending battery life while providing clear visual status information.
4Loss of information
If conventional display materials are used, then status information can be displayed, but manufacturing costs are high
Solution Approach 1:
The electrochrome polymer can be applied as a thin layer using simple coating techniques and requires minimal additional manufacturing steps. The material itself is cost-effective compared to electrophoretic display capsules or LCD assemblies, reducing overall manufacturing costs while providing the desired status indication function.
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 solution enables improved, energy-efficient, and visually appealing representation of operating states and battery charge status, facilitating easier evaluation by users and support persons, particularly for elderly individuals, with reduced manufacturing costs and enhanced reliability.
Implementation Method 1
a hearing apparatus to be worn on or in the ear, including a housing, which is formed at least in part from an electrochrome polymer... the housing to change its color at least in part, depending on electrical excitation
Implementation Method 2
a hearing apparatus to be worn on or in the ear, including a housing, which has an organic light-emitting diode
Data Source
AI summary
A hearing apparatus to be worn on or in the ear is provided, which includes a housing. The housing is here formed at least in part from an electrochrome polymer. Since electrochrome polymers represent a homogeneous material, this means that they can be printed onto the housing in very thin layers. According to a second aspect the present invention relates to a hearing apparatus to be worn on or in the ear, including a housing, which has an organic light-emitting diode. Because organic light-emitting diodes are able to separate out light in a wide variety of colors, this permits a high contrast to the environment and the colors appear stronger. Unlike conventional light-emitting diodes this is however performed in a printing process, so that it is possible to provide any surfaces with organic light-emitting diodes.