Display Panel Slot Structure for Millimeter-Wave Transparency
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Solution Overview
Problem
The integration of millimeter-wave antennas in mobile devices is challenging due to limited space and interference from conductive frames and displays, which impedes omnicoverage and stable communication.
Innovation Solution
A display panel comprising light emitting diode clusters separated by dielectric gaps and interconnected by interconnection arrangements forming slot structures that allow electromagnetic signals to pass through, enhancing beam coverage without adding extra layers or impairing display functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional antenna modules are integrated into mobile devices, then millimeter-wave communication capability is achieved, but device space is limited and omnicoverage is impeded
Solution Approach 1:
The patent merges the antenna structure with the display panel by forming slot structures directly within the display panel layers. The slot structures are created by configuring gaps between light emitting diode clusters and interconnection arrangements to form radiating elements, eliminating the need for separate antenna modules and enabling millimeter-wave communication while maintaining display functionality.
Solution Approach 2:
The display panel serves multiple functions: it acts as both the display component and the antenna radiating structure. The same physical structure (display panel with gaps and interconnections) performs both light emission and electromagnetic signal radiation, achieving multi-functionality without requiring additional device volume.
2Reliability
If conductive frames and displays are used in mobile devices, then structural integrity and display functionality are maintained, but electromagnetic signal transmission is impeded
Solution Approach 1:
The patent converts the potentially harmful effect of the conductive display structure into a beneficial antenna radiating structure. By configuring the gaps between diode clusters and interconnection arrangements as slot structures, the display panel's conductive elements become the radiating elements themselves, transforming signal interference into effective electromagnetic radiation for millimeter-wave communication.
3Illumination intensity
If the gap width is reduced to be invisible to the naked eye, then display appearance is improved, but electromagnetic signal transmission capability is reduced
Solution Approach 1:
The patent changes the parameters of the slot structures by configuring specific gap widths and lengths between light emitting diode clusters. The gap width is controlled to be small (≤10 μm) for aesthetic purposes, while the gap length is optimized to be at least twice the length of the light emitting diode cluster to maintain electromagnetic signal transmission capability in the millimeter-wave frequency band.
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 solution enables improved electromagnetic signal transmission through the display panel, enhancing beam coverage and user experience by allowing millimeter-wave signals to pass through while maintaining display functionality.
Implementation Method 1
The first interconnection arrangements and at least two of the gaps being configured to form at least one two-dimensional slot structure comprising a first section and a second section... at least one slot structure is transparent to electromagnetic signals in a millimeter-wave frequency band
Data Source
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AI summary
A display panel (1) transparent to electromagnetic signals and comprising a plurality of light emitting diode clusters (2), each pair of adjacent light emitting diode clusters (2) being separated by a dielectric gap (3a, 3b), and a plurality of first interconnection arrangements (4) configured to interconnect at least two adjacent light emitting diode clusters (2). The first interconnection arrangements (4) and at least two of the gaps (3a) are configured to form at least one two-dimensional slot structure (5) comprising a first section (5a) and a second section (5b). Each section (5a, 5b) is formed by a gap (3a) and has a length (L1, L2) which is at least twice as long as a corresponding length (L3, L4) of one light emitting diode cluster (2). The first interconnection arrangements (4) are configured such that at least one slot structure (5) is transparent to electromagnetic signals in a millimeter-wave frequency band.