Display-Housing Capacitive ESD Structure for Flex Cable Protection
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Solution Overview
Problem
Current electronic devices suffer from static electricity discharge through gaps between the display screen and housing, which can damage components within the display screen, particularly the flex cable.
Innovation Solution
Incorporating a capacitive structure formed by a conductive electrostatic protection layer, a dielectric layer, and a conductive portion between the housing and display panel, which directs static electricity to ground while minimizing impact on antenna performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a gap is formed between the housing and display panel, then assembly is simplified and display screen replacement is easier, but static electricity can be directly discharged to the flex cable region causing component damage
Solution Approach 1:
The patent introduces an electrostatic protection layer as an intermediary component between the housing and display panel. This conductive layer is positioned within the gap and connected to ground, serving as a mediator that intercepts static electricity discharge paths and redirects them safely to ground, preventing direct discharge to the flex cable and display components while maintaining the gap structure for ease of assembly.
2Reliability
If an electrostatic protection layer is added to protect against static electricity, then component reliability improves, but device structure becomes more complex
Solution Approach 1:
The electrostatic protection layer is designed to serve multiple functions simultaneously: it provides electrostatic discharge protection to components, acts as a conductive shield to manage electromagnetic interference, and can be integrated with existing housing or display frame structures. This multi-functionality reduces the need for separate dedicated ESD protection components, thereby limiting the increase in overall device complexity while achieving reliable component protection.
3Reliability
If the electrostatic protection layer is directly connected to ground, then static electricity discharge protection is maximized, but antenna performance is degraded
Solution Approach 1:
The patent positions the electrostatic protection layer and its ground connection to skip over or bypass the antenna regions. The conductive layer is strategically placed and connected to ground through paths that do not intersect with antenna elements or their electromagnetic fields. This allows rapid static electricity discharge to ground while the antenna regions remain electrically isolated and unaffected, thus protecting components without degrading antenna performance.
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
Effectively protects the display screen from static electricity damage while reducing interference with the device's antenna performance.
Implementation Method 1
the first electrostatic protection layer, the dielectric layer, and the conductive portion form a capacitive structure
Data Source
AI summary
The present application discloses an electronic device. The electronic device includes: a display screen, including a display panel and a wire structure electrically connected to the display panel; a housing, where the display screen is disposed on one side of the housing, the housing is provided with a conductive portion, and a gap is formed between the housing and the display panel; a first electrostatic protection layer opposite the conductive portion, where the first electrostatic protection layer is conductive; and a dielectric layer disposed between the first electrostatic protection layer and the conductive portion, where the first electrostatic protection layer, the dielectric layer, and the conductive portion form a capacitive structure.