Display Module Shielding Layer for RF Interference Reduction
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Solution Overview
Problem
Full-screen mobile phone designs increase radio frequency radiation interference between the display integrated circuit and the antenna, necessitating higher shielding requirements to mitigate this interference.
Innovation Solution
A display module incorporating a shielding layer electrically connected to a grounding lead wire and conductor, which is connected to a grounding terminal on the display integrated circuit, providing electromagnetic shielding to reduce radio frequency radiation interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If full-screen design is implemented to improve display area and user experience, then the display area increases and user experience improves, but the distance between display integrated circuit and antenna decreases causing increased radio frequency radiation interference
Solution Approach 1:
A shielding layer is introduced as an intermediary component between the display integrated circuit and the antenna. This shielding layer, electrically connected to ground through a grounding lead wire, acts as a mediator that blocks and redirects radio frequency radiation, preventing direct interference between the display circuit and antenna while maintaining the full-screen design configuration
2Reliability
If shielding requirements are increased to reduce radio frequency radiation interference, then anti-interference capability improves, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The shielding layer is merged with the existing cover plate structure, forming an integrated component rather than a separate addition. The cover plate is designed with a built-in shielding layer that is electrically connected to ground, combining the protective function with the structural function of the cover plate, thereby improving anti-interference capability without significantly increasing device complexity
Solution Approach 2:
The cover plate is designed to serve multiple functions: it provides the structural cover for the display module, incorporates the shielding layer for electromagnetic protection, and includes the grounding lead wire for electrical connection. This multi-functional design achieves effective shielding without adding separate dedicated shielding components, reducing overall device complexity
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 effectively reduces radio frequency radiation interference between the display integrated circuit and the antenna, improving shielding efficiency and simplifying design by integrating the shielding layer with the cover plate, thus enhancing the overall anti-interference capabilities of the display device.
Implementation Method 1
a shielding layer disposed between the cover plate and the display integrated circuit and electrically connected to the grounding conductor
Implementation Method 2
a grounding lead wire whose first end is electrically connected to the grounding terminal, and whose second end is electrically connected to a grounding conductor
Data Source
AI summary
A display module includes a cover plate, a display integrated circuit, a grounding lead wire and a shielding layer. The display integrated circuit is disposed on a side of the cover plate and has a grounding terminal. A first end of the grounding lead wire is electrically connected to the grounding terminal, and a second end of the grounding lead wire is electrically connected to a grounding conductor. The shielding layer is disposed between the cover plate and the display integrated circuit and is electrically connected to the grounding conductor.