Liquid Crystal Display Panel Antenna Signal Shielding
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Solution Overview
Problem
Existing liquid crystal display panels integrate antenna and display functions, causing signal shielding and interference, which degrades antenna signal intensity in high-frequency bands.
Innovation Solution
A liquid crystal display panel design with antenna modules placed in a non-display area around the display area, utilizing two distinct liquid crystal molecular layers for frequency modulation and display, and a ground electrode layer configuration to prevent signal shielding, along with a feeding network and transparent metal trace for improved signal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the liquid crystal antenna and display portion are integrated in the same panel, then the device complexity is reduced and multi-functionality is achieved, but the antenna signal intensity deteriorates due to shielding and interference from the panel structure
Solution Approach 1:
The liquid crystal layer is divided into two separate functional layers: a first liquid crystal molecular layer dedicated to antenna frequency modulation and a second liquid crystal molecular layer dedicated to display functions. This segmentation allows each layer to optimize its specific function without interfering with the other, resolving the contradiction between multi-functionality and signal intensity.
Solution Approach 2:
A partitioned electrode structure acts as an intermediary between the antenna and display portions. The first electrode layer is positioned between the antenna modules and the second electrode layer, creating an electromagnetic field isolation barrier that prevents the display panel structure from shielding the antenna signal while maintaining the integrated design.
2Device complexity
If a single liquid crystal layer is used for both antenna and display functions, then the device complexity is reduced, but the antenna signal intensity deteriorates due to shielding from the panel
Solution Approach 1:
The liquid crystal layer is segmented into two distinct molecular layers with different orientations and functions. The first layer is configured for antenna operation with specific molecular alignment, while the second layer is configured for display with different molecular alignment, allowing both functions to coexist without mutual interference.
Solution Approach 2:
The patent introduces a vertical dimension separation by stacking two liquid crystal layers at different positions within the panel structure. The first liquid crystal molecular layer is positioned closer to the antenna modules while the second layer is positioned closer to the display portion, creating spatial separation that prevents shielding while maintaining integration.
3Adaptability or versatility
If antenna modules are placed within the display panel area, then the device achieves compact integration, but the antenna signal intensity deteriorates due to interference from the panel itself
Solution Approach 1:
The partitioned electrode structure serves as an electromagnetic intermediary that isolates the antenna modules from the display panel structure. The first electrode layer creates an electromagnetic barrier that prevents the panel's internal structures from shielding or interfering with the antenna signal, allowing compact integration without harmful interference.
Solution Approach 2:
The patent applies different local qualities to different regions of the panel. The region containing the antenna modules has a specific electrode configuration and liquid crystal layer orientation optimized for electromagnetic performance, while the display portion has a different configuration optimized for optical performance, allowing each region to function without interfering with the other.
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
Enhances signal intensity of antenna modules by preventing shielding from the display panel and optimizing performance through the use of stable and optically strong liquid crystal layers.
Implementation Method 1
a first liquid crystal molecular layer for frequency modulation of the antenna modules
Implementation Method 2
characteristics of transmitting and receiving signals directionally under regulation of an electric field
Data Source
AI summary
An embodiment of the present application provides a liquid crystal display panel including: an array substrate; a color film substrate; a plurality of antenna modules, each of the antenna modules including a driving circuit unit, a plurality of radiation circuit units, and a ground electrode layer; and a liquid crystal molecular layer including a first liquid crystal molecular layer and a second liquid crystal molecular layer.