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EMI-Compliant Touch Display Solution-DINGTouch
EMI-Compliant Touch Display Solution-DINGTouch
When developing products for industrial control, medical electronics, automotive systems, or any application requiring electromagnetic certification (such as CE, FCC, or CCC), touchscreen displays must be designed with strict EMI control to ensure electromagnetic compliance and avoid causing interference to surrounding devices.
✅ 1. EMI Compliance Goals
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Conducted Emission (CE): Control electromagnetic noise traveling through power and signal cables.
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Radiated Emission (RE): Limit electromagnetic waves radiated through the air from components.
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Frequency Avoidance: Avoid interfering with nearby modules (e.g., Wi-Fi, 4G, GPS).
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Certifications: Meet standards like EN 55032, CISPR 32, FCC Part 15, and IEC 61000 series.
2. EMI Optimization Strategies for Touch Display Systems
A. Structural and Electrical Design
| Design Area | EMI Control Measures |
|---|---|
| FPC Layout |
- Maintain symmetric trace routing to reduce antenna effects; - Keep signal traces short and close to ground planes for shielding. |
| Touch Controller IC |
- Use low-EMI ICs (e.g., ILI2511, Goodix, EETI series); - Select ICs with working frequency away from host system core bands (e.g., Wi-Fi, LTE). |
| GND Design |
- Implement a surrounding ground shield layer around the screen and on FPC; - Ensure effective low-resistance GND connection to chassis or system ground. |
| Power Filter Circuit |
- Add π filters (inductor + capacitor); - Use Ferrite Beads to eliminate high-frequency noise from power lines. |
| Shielding Materials |
- Use ITO shielding layer or metal mesh films; - Apply EMI-absorbing materials or conductive foam for sensitive areas. |
B. Touch & Display Module-Level Measures
| Component | Optimization Method |
|---|---|
| LCD Module |
- Use LCDs with internal metal shielding or external shield layers; - Ensure ground continuity from display interface. |
| Touch Panel (TP) |
- Choose G+G or G+F+F with ITO shielding layer; - Ensure touch shield is properly grounded; - Use conductive adhesive or gasket along TP edges. |
| Optical Bonding | - Apply full OCA/OCR bonding to eliminate air gaps, improving EMI isolation and reducing internal reflections. |
C. System-Level and External Enhancements
| Item | Recommended Measures |
|---|---|
| Chassis Grounding | - Ensure metal housing is grounded and makes proper contact with shield layers. |
| I/O Port Protection |
- Add TVS diodes to USB/I²C interfaces; - Use common-mode chokes on signal and power lines. |
| EMC Accessories | - Apply conductive foam, EMI tapes, or metal covers around high-noise areas or connectors. |
3. Recommended Pre-Certification Testing
| Test Type | Test Item | Reference Standard |
|---|---|---|
| EMI Emission | Conducted Emission (CE) | EN 55032 / FCC Part 15B |
| EMI Emission | Radiated Emission (RE) | EN 55032 / CISPR 32 |
| Power Interference | Harmonics & Flicker | EN 61000-3-2 / 3 |
| Pre-Scan | EMI Spectrum Sweep | 10 kHz ~ 1 GHz (or per system design) |
We recommend starting EMI pre-checks early in system design to avoid late-stage certification failure.
4. DINGTouch EMI-Optimized Touch Display Module Recommendation
| Feature | Description |
|---|---|
| Display Sizes | 4.3" to 21.5" Capacitive Touch Displays |
| Touch IC | ILItek (ILI2511), EETI, or Goodix low-noise ICs |
| Shield Design | Dual ITO Shielding + Metal-layered FPC |
| Interface Options | USB / I²C / RS232 with EMI filtering |
| Optional Add-ons | EMI grid glass, metal housing, conductive foam sealing |
| Certification Experience | Reference reports available (CE / FCC / Surge / ESD) |
| Application Scenarios | Medical equipment, power control terminals, rail & automation displays |
5. Summary & Partnership Invitation
When your products are destined for EMC-sensitive environments, a touchscreen with EMI-resilient architecture is key to success. At DINGTouch, we implement end-to-end EMI control, from IC selection to structural design, helping our customers pass certifications and launch with confidence.
✅ Looking for an EMI-optimized touchscreen display?
✅ Need engineering support to pass CE/FCC/EMC compliance?
Contact DINGTouch today — your reliable partner in high-performance, EMI-certified capacitive touch display solutions.
Ready to Build Your Outdoor Display Solution?
Get in touch with us at sales@szdingtouch.com. Our expert engineers will help you design a cost-effective, tailored solution to meet your project’s exact specifications.
DINGTouch :Committed to continuous innovation and improvement of product quality to meet customers' high requirements and expectations.
DINGTouch is a manufacturer that provides high quality touch screen panels. Focus on the design, manufacturing and sales of touch screen panels, and are committed to providing customized solutions that satisfy customers.
DINGTouch: In the process of customizing touch screen panels, we focus on close cooperation and communication with customers. Understanding customers' needs and providing customized solutions will meet customers' individual needs. The company's products are favored by customers for their high quality and reliability, and provide them with the best touchscreen panel solutions.
DINGTouch :Committed to continuous innovation and improvement of product quality to meet customers' high requirements and expectations.
DINGTouch is a manufacturer that provides high quality touch screen panels. Focus on the design, manufacturing and sales of touch screen panels, and are committed to providing customized solutions that satisfy customers.
DINGTouch: In the process of customizing touch screen panels, we focus on close cooperation and communication with customers. Understanding customers' needs and providing customized solutions will meet customers' individual needs. The company's products are favored by customers for their high quality and reliability, and provide them with the best touchscreen panel solutions.
At DINGTOUCH, we are the world's leading touchscreen manufacturer, helping businesses around the world take advantage of this exciting technology. For more information, please visit the home page now.
Find the DINGTouch technical team to achieve the success of your company's new project.
DINGTouch is a company specializing in the R&D and production of touch screen technology, headquartered in Shenzhen, China. As a professional touch screen supplier, DINGTouch is committed to providing high-quality, stable and reliable touch screen products to meet the diverse needs of customers. We continue to carry out technological innovation and product optimization to ensure that its touch screen products have good sensitivity, accuracy and durability.
In addition to the products themselves, we also focus on cooperation and communication with customers, and are committed to providing customized solutions and excellent after-sales services. Through continuous efforts to improve product quality and customer satisfaction, we have established a good reputation in the touchscreen industry and won widespread market recognition.
In addition to the products themselves, we also focus on cooperation and communication with customers, and are committed to providing customized solutions and excellent after-sales services. Through continuous efforts to improve product quality and customer satisfaction, we have established a good reputation in the touchscreen industry and won widespread market recognition.
What DINGTOUCH can do:
• PCAP maximum size 65”
• Multi-touch (Touch screen can be customized to your needs.)
• Optical bonding service/air bonding
• LCD interface: HDMI/RGB/MIPI/LVDS/EDP, etc.
• PCAP interface: IIC/USB interface
• CTP can customize the cover glass surface treatment process AG (anti-glare), AR (anti-reflection), AF (anti-fingerprint), waterproof, and glove touch
• Supports 0.55 mm-12 mm coverslip touch.
• Support operating temperature: -40℃-90℃.
Dingtouch Industrial Capacitive Touch Screen Manufacturer
In conclusion, Dingtouch as a professional touch screen manufacturer with more than 10 years touch screen experience.We have many capacitive touch screen. Such as5 inch touch screen,7 inch touch screen,10.1inch touch screen,15 inch touch screen,15.6 inch touch screen,17 inch touch screen,18.5 inch touch screen,19 inch touch screen,21.5 inch touch screen,32 inch touch screen, However, we also welcome to customize your own touch screen . Contact our team today to learn what capacitive touch screen are best for our retail business needs.
Contact us NOW! sales@szdingtouch.com
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Contact: Dingtouch
Phone: +8615815536116
Tel: +8615815536116
Email: sales@szdingtouch.com
Add: Building A, Bailu Plaza, No. 48, Gonghe Industrial Road, Gongle Community, Xixiang Street, Baoan District, Shenzhen,China. 518126
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