Integrated Reflecting Surface Display for Dead Zone Elimination
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Solution Overview
Problem
The challenge of limited space for installing both radio wave reflecting devices and electronic signboards in areas with high user density, leading to potential dead zones and reduced information accessibility due to limited device placement.
Innovation Solution
Integration of a display panel and radio wave reflecting device, sharing a common substrate and electrode layer to reduce manufacturing costs and enable simultaneous reflection of radio waves and visible light, allowing for biaxial control of reflected wave direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separate devices are installed for radio wave reflection and display functions, then each device can be optimized for its specific function, but the installation space required increases and manufacturing costs increase
Solution Approach 1:
The patent merges the radio wave reflecting device and the reflective display device into a single integrated structure. The display panel and radio wave reflecting device share common components including the electrode layer, substrate, and liquid crystal layer, eliminating the need for separate devices and reducing overall system complexity while maintaining manufacturing efficiency
Solution Approach 2:
The integrated device performs multiple functions simultaneously: it reflects radio waves for communication purposes and displays visual information through the reflective display panel. The electrode layer and liquid crystal layer serve dual purposes for both radio wave control and display functionality, making the device universal in its application
2Area of stationary object
If separate devices are installed for radio wave reflection and display functions, then each device can operate independently, but the installation area increases leading to limited placement options in crowded areas
Solution Approach 1:
The patent combines the radio wave reflecting device and display device into a single integrated unit, significantly reducing the installation area required. This merged structure allows the device to be placed in crowded urban areas where space is limited, while maintaining the ability to perform both communication and display functions
3Ease of operation
If a phased array antenna device is used to control radio wave direction, then the transmission direction can be adjusted, but the device complexity and manufacturing cost increase
Solution Approach 1:
The electrode layer serves dual functions: it controls the direction of reflected radio waves and simultaneously acts as the common electrode for the reflective display panel. This eliminates the need for complex phased array antenna structures while maintaining the ability to adjust transmission direction through simple voltage control
4Reliability
If multiple layers and components are used for radio wave reflection and display, then both functions can be performed, but the manufacturing cost and device thickness increase
Solution Approach 1:
The patent integrates the radio wave reflecting device and reflective display device into a single structure that shares common layers including the electrode layer, substrate, and liquid crystal layer. This merging reduces the total number of components and layers required, thereby reducing manufacturing cost and device thickness while maintaining reliable performance of both functions
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 integrated solution reduces manufacturing costs and enhances the ability to eliminate dead zones by effectively reflecting radio waves and displaying images, even in crowded urban areas with limited installation space.
Implementation Method 1
utilizes a change in dielectric constant due to the alignment state of a liquid crystal
Implementation Method 2
control the phase of reflected radio waves
Implementation Method 3
simultaneous reflection of radio waves and visible light
Data Source
AI summary
An intelligent reflecting surface includes a plurality of first patch electrodes, a plurality of second patch electrodes facing the plurality of first patch electrodes and spaced apart, an electrode layer facing the plurality of second patch electrodes and spaced apart on the opposite side of the plurality of second patch electrodes from the side on which the plurality of first patch electrodes is provided, a first liquid crystal layer provided between the plurality of first patch electrodes and the plurality of second patch electrodes, a first substrate provided between the plurality of second patch electrodes and the electrode layer, an array substrate including a plurality of transistors and provided on the opposite side of the electrode layer from the side on which the first substrate is provided, and a second liquid crystal layer provided between the array layer and the electrode layer.