Display Module Antenna Layout Using Screen Cover Glass Space
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Solution Overview
Problem
The integration of millimeter-wave antenna arrays into mobile terminals leads to space occupation, degrading antenna performance due to the need for higher carrier frequencies and increased path loss in 5G communications, especially with the rise of full-screen designs.
Innovation Solution
A display module for mobile terminals incorporating a screen cover plate with a first antenna array and a flexible circuit board, where the antenna array is arranged on the screen cover plate, allowing for beam sweeping or beamforming without occupying space for other antennas, utilizing the high dielectric constant of the glass substrate to reduce antenna size and improve performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If millimeter-wave antenna arrays are integrated into mobile terminals using AIP technology, then antenna gain and beamforming capability are improved, but antenna performance degrades due to space occupation and interference with other antennas
Solution Approach 1:
The patent moves the antenna array from the traditional back cover plane to the front screen cover plate, utilizing the z-dimensional space above the screen. This spatial repositioning allows the antenna array to operate without interfering with other antennas on the back cover, resolving the space occupation and interference issues while maintaining beamforming capability
Solution Approach 2:
The screen cover plate is designed to serve dual functions: as a display protective component and as a substrate for the antenna array. By integrating the antenna array into the screen cover plate structure, the patent eliminates the need for separate antenna spaces, thereby avoiding performance degradation from space constraints
2Productivity
If higher carrier frequencies are used to increase transmission rate and communications capacity, then communications performance is improved, but path loss increases requiring higher antenna gain
Solution Approach 1:
The patent changes the operating frequency parameter to millimeter-wave band (24GHz or higher), which enables higher transmission rates and communications capacity. To compensate for the increased path loss at these frequencies, the patent implements a phased array antenna system with beamforming capability that concentrates energy in specific directions, effectively increasing the directional gain to overcome path loss
3Power
If more antennas are integrated to achieve high gain and beamforming, then communications capacity is improved, but available space is reduced due to full-screen design requirements
Solution Approach 1:
The patent utilizes the space above the screen cover plate (z-dimension) rather than consuming lateral space on the back cover. This allows integration of multiple antenna elements for phased array beamforming without reducing the lateral area available for other components, effectively decoupling antenna gain requirements from lateral space constraints
Solution Approach 2:
The antenna array is nested within the screen cover plate structure, utilizing the existing structural space. The antenna elements are integrated into the screen cover plate's thickness dimension, allowing multiple antennas to be accommodated without increasing the overall lateral footprint of the device
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 enhances antenna performance by eliminating space competition with other antennas and leveraging the glass substrate's high dielectric constant to minimize antenna size, thereby improving radio communications quality and spatial coverage.
Implementation Method 1
by designing an antenna array on the glass substrate material of the screen cover plate, and multiplexing the dielectric substrate of the screen cover plate, a size of the antenna can be further reduced due to the high dielectric constant of the glass substrate
Data Source
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AI summary
The present disclosure provides a display module and a mobile terminal. The display module includes a screen cover plate, a first antenna array, a first flexible circuit board, and a first radio frequency integrated circuit; where the first antenna array is arranged in a first region of the screen cover plate; the first radio frequency integrated circuit is arranged on the first flexible circuit board, and is electrically connected to the first antenna array through the first flexible circuit board.