Concavo-Convex Antenna Pattern in Display Window Assembly
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Solution Overview
Problem
Display devices with integrated antennas face challenges in achieving improved radiation capability and impact resistance without increasing the overall thickness, as the thickness of the antenna pattern is compromised when trying to reduce the device's thickness, leading to degraded radiation performance and susceptibility to external impacts.
Innovation Solution
A window assembly for display devices featuring a cover window with a concavo-convex receiving recess, an antenna pattern with a corresponding concavo-convex shape, an insulating layer, and an antenna pad, where the antenna pattern has a radiating member with greater thickness than the connection pattern, and a feeding electrode that electrically couples the antenna pattern with the antenna pad through a via hole in the insulating layer, enhancing radiation capability while maintaining reduced thickness and improved impact resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the thickness of the antenna pattern is increased to improve radiation capability, then the radiation capability is improved, but the whole thickness of the display device increases
Solution Approach 1:
The antenna pattern is nested within a recess formed in the cover window, allowing the antenna structure to be embedded rather than added on top. This nesting approach enables the antenna pattern to have sufficient thickness for good radiation capability while the overall device thickness remains reduced, as the antenna occupies space within the existing cover window structure rather than increasing the external dimensions.
2Length of stationary object
If the thickness of the antenna pattern is decreased to reduce the whole thickness of the display device, then the whole thickness is reduced, but the radiation capability is degraded
Solution Approach 1:
The antenna pattern is designed with non-uniform thickness, having a first thickness in the radiating portion and a second thickness in the connection portion, where the thickness varies to optimize different functional regions. This local quality variation allows the radiating portion to have sufficient thickness for good radiation capability while the overall structure maintains reduced thickness, as different parts of the antenna have different thickness requirements for their respective functions.
3Ease of manufacture
If a flat plate structure is used for the cover window and display panel, then the manufacturing is simplified, but the antenna radiation capability is degraded due to thickness constraints
Solution Approach 1:
The cover window is designed with a curved surface including a recess rather than a completely flat plate structure. This curvature allows the antenna pattern to be embedded at varying depths, creating a three-dimensional space that accommodates the antenna structure with sufficient effective thickness for radiation capability while maintaining overall compactness. The curved surface is manufacturable using standard glass forming techniques.
4Length of stationary object
If the antenna pattern is made thinner to reduce device thickness, then the device thickness is reduced, but the impact resistance is degraded
Solution Approach 1:
The antenna pattern is nested within a recess in the cover window and surrounded by an insulating layer that fills the recess. This nested configuration with surrounding insulation provides structural support and protection to the antenna pattern, enhancing its impact resistance. The insulating layer acts as a cushioning material that protects the thinner antenna pattern from external impacts while the overall device maintains reduced thickness.
Data Source
AI summary
A window assembly for a display device with an antenna includes a cover window, an antenna pattern, an insulating layer, and an antenna pad. The cover window includes a receiving recess having a bottom surface with a concavo-convex shape. The antenna pattern is accommodated in the receiving recess to cover the bottom surface and the antenna pattern has a lower surface with a concavo-convex shape corresponding to the concavo-convex shape of the bottom surface. The insulating layer is accommodated in the receiving recess to cover the antenna pattern. The antenna pad is disposed on the insulating layer and electrically coupled to the antenna pattern. Thus, a volume of the antenna pattern is increased, and a radiation capability of the antenna may be improved.