Optoelectronic Electrodes for Head-Mounted Displays
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Solution Overview
Problem
Conventional placement of optoelectronic components adjacent to antennas in head-mounted display devices leads to attenuation or interference with wireless signals, reducing antenna efficiency.
Innovation Solution
The configuration of optoelectronic components with specified sheet resistance electrodes, such as aluminum doped zinc oxide or indium tin oxide, and strategic positioning of antennas relative to these components, including the use of boundary layers and nano-imprinted electrodes, to minimize wireless interference while maintaining performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If optoelectronic components are placed adjacent to the antenna, then the device can achieve compact integration and efficient space utilization, but wireless signal attenuation and interference occur, reducing antenna efficiency
Solution Approach 1:
A dielectric layer is introduced between the optoelectronic component and the antenna to act as an intermediary. This dielectric layer reduces the harmful electromagnetic interaction while maintaining the compact integration, thus preserving antenna efficiency without sacrificing space utilization
Solution Approach 2:
The patent positions the antenna and optoelectronic component in different layers (z-dimension) rather than placing them adjacent in the same plane. This vertical stacking approach maintains compact footprint while reducing interference by separating the components in the third dimension
2Speed
If the sheet resistance of electrodes in optoelectronic components is reduced to improve switching speed, then response time improves, but wireless interference increases, reducing antenna efficiency
Solution Approach 1:
The patent optimizes the sheet resistance parameter of the electrode to a specific range (e.g., 10-100 ohms per square) that balances switching speed performance with minimal wireless interference, rather than simply minimizing resistance
Solution Approach 2:
A dielectric layer with specific properties is positioned between the electrode and antenna to mediate the electromagnetic interaction, allowing lower sheet resistance (faster switching) while maintaining antenna efficiency through the shielding effect
3Ease of manufacture
If conventional optoelectronic components are used with standard electrode configurations, then manufacturing is straightforward, but wireless interference occurs, reducing overall device performance
Solution Approach 1:
The patent uses composite electrode structures combining transparent conductive oxides (like ITO or AZO) with specific dielectric materials. These composite structures maintain ease of manufacture through standard sputtering processes while achieving optimized electrical and electromagnetic properties
Solution Approach 2:
The patent modifies electrode parameters such as sheet resistance and thickness within specific ranges that can be achieved through conventional manufacturing processes, avoiding complex fabrication while improving wireless signal quality
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 wireless interference and maintains the switching speed of optoelectronic components, enhancing antenna efficiency without negatively impacting their performance.
Implementation Method 1
By providing the ability to modulate light based on applied electrical signals, optoelectronic components can be used, for example, to switch on or off transmission of light
Implementation Method 2
The one or more electrodes have a specified sheet resistance. In some embodiments, the one or more electrodes include aluminum doped zinc oxide. In some embodiments, the one or more electrodes include indium tin oxide
Implementation Method 3
In some embodiments, the one or more electrodes include one or more boundary layers. In some embodiments, the one or more boundary layers include one or more layers of indium molybdenum oxide. In some embodiments, the one or more boundary layers include one or more layers of indium niobium oxide
Data Source
AI summary
An electronic device includes one or more antennas and one or more optoelectronic components. The one or more optoelectronic components include one or more electrodes. The one or more electrodes have a specified sheet resistance. The one or more electrodes may include aluminum doped zinc oxide, sub-wavelength-roughened electrodes, nano-imprinted electrodes, electroplated electrodes, indium tin oxide or one or more boundary layers. The one or more boundary layers may include one or more layers of indium molybdenum oxide and/or one or more layers of indium niobium oxide. The one or more electrodes may be aligned via field-induced alignment. The one or more antennas may be positioned in a first layer of the electronic device and the one or more optoelectronic components may be positioned in a second layer of the electronic device distinct from the first layer. The electronic device may be used in a head-mounted display device.