Folded Display Module Shielding for NFC Charging Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Smart wearable products integrated with near field communication technology experience water ripples during wireless charging due to electromagnetic interference.
Innovation Solution
A display module design that includes a display substrate with a display portion, bending portion, and binding portion, a display driving chip bound to the binding portion, a near field communication antenna on the back side of the display portion, and shielding layers to prevent electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a near field communication antenna is integrated into smart wearable products, then communication functionality is improved, but water ripples occur during wireless charging due to electromagnetic interference
Solution Approach 1:
A shielding layer is introduced as an intermediary component between the NFC antenna and the display driving chip. This shielding layer acts as a mediator that blocks electromagnetic interference from the NFC antenna from reaching the display driving chip during wireless charging, thereby resolving the water ripple issue while maintaining both NFC communication functionality and wireless charging capability
Solution Approach 2:
The display substrate is divided into distinct functional regions: a display portion, a bending portion, and a binding portion. The NFC antenna is positioned on the back side of the display portion, while the display driving chip is mounted on the binding portion. This spatial segmentation separates the NFC antenna from the display driving chip, reducing electromagnetic interference while maintaining both functionalities
2Area of stationary object
If the NFC antenna is placed close to the display driving chip for compact design, then device size is reduced, but electromagnetic interference causes water ripples
Solution Approach 1:
The NFC antenna is positioned on the back side of the display portion, utilizing the third dimension (depth/thickness) rather than only horizontal placement. This vertical/dimensional separation allows the NFC antenna and display driving chip to be spatially separated in the thickness direction, reducing electromagnetic interference while maintaining a compact overall device size
Solution Approach 2:
A shielding layer is positioned between the NFC antenna and the display driving chip to block electromagnetic interference. This intermediary structure enables close integration of components for compact design while preventing the harmful electromagnetic effects from affecting the display driving chip
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 design effectively shields the display driving chip from electromagnetic interference, reducing water ripples during wireless charging and improving the anti-static ability of the display module.
Implementation Method 1
a first shielding layer, wherein the first shielding layer is located on a side of the display driving chip away from the display portion
Implementation Method 2
Near Field Communication (NFC) is a contactless identification and interconnection technology, which adopts near field magnetic field communication
Data Source
AI summary
A display module and a display device are provided. The display module includes a display substrate, including a display portion, a bending portion and a binding portion, the binding portion is bent to a back side of the display portion through the bending portion; a display driving chip, being bound to the binding portion; a near field communication antenna, located on the back side of the display portion, an orthographic projection of the near field communication antenna on the display portion is spaced apart from an orthographic projection of the display driving chip on the display portion; and a first shielding layer, the first shielding layer is located on a side of the display driving chip away from the display portion, and the orthographic projection of the display driving chip on the display portion is located within an orthographic projection of the first shielding layer on the display portion.