Intermediate PCB Antenna Package for Wider Display Radiation
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Solution Overview
Problem
Existing antenna designs for image display devices face challenges such as increased signal loss and limited radiation coverage due to high driving frequencies and the need for connection intermediate structures, which also restrict antenna gain and cause radiation interference with conductive display panel structures.
Innovation Solution
An antenna package is developed with an intermediate circuit board that includes multiple radiators and feeding wirings, allowing for improved radiation properties and spatial efficiency by extending radiation coverage and frequency bands through strategic placement and bending of the circuit board, integrating an antenna unit with the display panel and a chip mounting board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the driving frequency of the antenna is increased to enable high frequency or ultra-high frequency band communication, then the communication capability is improved, but the signal loss is increased
Solution Approach 1:
The patent combines multiple radiators (first radiator on display panel, second radiator on intermediate circuit board) into a single antenna system. This merging allows the antenna to operate at high frequencies while maintaining signal strength through cooperative radiation from multiple elements, reducing overall signal loss.
Solution Approach 2:
An intermediate circuit board is introduced as a mediator between the antenna unit on the display panel and the main board. This intermediate structure provides optimized signal transmission paths and impedance matching, reducing signal loss that would otherwise occur in high-frequency operations.
2Ease of manufacture
If a connection intermediate structure such as a printed circuit board is added to connect the antenna to the main board, then the connection is improved, but the signal loss is increased by the connection intermediate structure
Solution Approach 1:
The intermediate circuit board uses a flexible printed circuit board (FPC) instead of a rigid PCB. This flexible structure reduces the number of connection layers and interfaces, minimizing signal loss while maintaining ease of connection and assembly in the compact device structure.
3Reliability
If the antenna is inserted into an image display device to improve antenna radiation properties, then the radiation properties are improved, but the thickness of the image display device may increase
Solution Approach 1:
The antenna system is nested within the existing device structure by integrating the first radiator into the display panel and positioning the second radiator on the intermediate circuit board that connects to the main board. This nested configuration improves radiation properties without increasing the overall device thickness.
Data Source
AI summary
An antenna package according to an embodiment of the present disclosure includes an antenna device including an antenna unit that includes a first radiator, and an intermediate circuit board coupled to the antenna device to be electrically connected to the antenna unit. The intermediate circuit board includes a core layer, a first feeding wiring formed on one surface of the core layer and electrically connected to the antenna unit, and a second radiator formed on the one surface of the core layer. A radiation coverage is expanded using an antenna included in the intermediate circuit board.