Core Protection Technologies and Customization Features of Capacitive Touch Screens Across Sectors
Core Protection Technologies and Customization Features of Capacitive Touch Screens Across Sectors
Release time：2025-10-24
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Core Protection Technologies and Customization Features of Capacitive Touch Screens Across Sectors
I. Core Concepts of AG, AF, AR, Waterproofing, and Explosion Protection
1. AG (Anti-Glare Coating)
By creating a micro-scale rough texture on the touch screen surface (via processes like chemical etching or spraying), AG coating converts direct light into diffused reflection, thereby reducing screen glare interference. The industry-standard reflectivity is typically ≤5%, which solves the problem of unreadable screen content under strong light. It is commonly used in outdoor devices and control panels in bright workshops.
2. AF (Anti-Fingerprint Coating)
As a fluorine-containing nano-coating, AF coating significantly reduces the screen’s surface tension (usually ≤20mN/m), making sweat and oil stains hard to adhere and easy to wipe clean. High-quality AF coatings have a contact angle ≥110° and good wear resistance, withstanding tens of thousands of wipes, making them suitable for high-frequency touch scenarios.
3. AR (Anti-Reflection Coating)
Using multi-layer optical coating technology, AR coating reduces light reflection at the glass interface by offsetting it, thereby improving screen transmittance. Ordinary glass has a transmittance of approximately 85%, while AR-coated glass can reach over 95%. It minimizes image ghosting and brightness loss, especially suitable for scenarios requiring high-brightness display.
4. Waterproofing
Implemented through structures like sealing gaskets and waterproof coatings, waterproofing adheres to the Ingress Protection (IP) rating standard. The core indicator lies in the two digits after the IP code: the first digit represents dust protection (Grade 5 or above prevents dust intrusion), and the second digit indicates water resistance (Grade 7 withstands short-term immersion in 1m of water, Grade 8 allows long-term immersion, and Grade 9K resists high-pressure water jets).
5. Explosion Protection
Achieved through material reinforcement or structural design, explosion protection is divided into two types: physical explosion protection and intrinsically safe explosion protection. Physical explosion protection uses tempered glass (Mohs hardness ≥7) or organic composite panels to resist impact and collision; intrinsically safe explosion protection prevents dangerous sparks through circuit current-limiting design, requiring compliance with industry certification standards such as ATEX and IEC.
II. Customization Features Across Four Key Sectors
1. Industrial Control Sector: Durability Design for Harsh Operating Conditions
- Protection Technology Adaptation: AG coating addresses strong light in workshops, while AF coating facilitates cleaning of residual engine oil and coolant; waterproofing generally reaches IP69K, withstanding high-pressure water jet cleaning, suitable for humid and dusty environments like machine tools and cleaning equipment. Explosion protection adopts a "tempered glass + metal frame" structure, and some high-risk workshop equipment requires ATEX explosion-proof certification.
- Core Customization Focus: The ITO conductive layer uses a "ITO + metal grid" composite structure, combined with a 1.1-2mm high-aluminum-silicon substrate, ensuring a touch lifespan ≥20 million times; the driver circuit adds an electromagnetic shielding layer to filter high-frequency interference from machine tools, maintaining a touch accuracy ≤5mm in oily and vibrating environments.
- Typical Applications: Production line control panels need to support thick-glove operation (driving voltage increased to 5V); equipment near ovens must withstand a wide temperature range of -50℃~120℃, with a wide bezel design reserved for cabinet installation.
2. Marine Sector: Reliability Optimization for Marine Environments
- Protection Technology Adaptation: A composite AR+AG coating is used—AR coating improves transmittance to over 95%, while AG coating reduces strong light reflection on the sea surface; waterproofing reaches ≥IP66, combined with an aluminum-sealed housing to resist seawater splashing and high-humidity corrosion.
- Core Customization Focus: Must pass the salt spray test (5% NaCl solution, continuous spraying at 35℃ for 24 hours without corrosion), with the substrate treated with anti-salt-spray coating; complies with DNVGL-CG-0339 and IEC60945 marine standards, featuring anti-vibration (10-500Hz) and anti-impact performance to adapt to ship 颠簸 (vibration) environments.
- Typical Applications: Navigation touch screens in the bridge support 0%-100% adjustable backlight brightness to adapt to day-night light changes on the sea; engine room control panels adopt intrinsically safe explosion-proof design to avoid safety risks in oil-gas environments.
3. Public Transportation Sector: Practical Enhancement for High-Foot-Traffic Scenarios
- Protection Technology Adaptation: Explosion-proof glass has a Mohs hardness ≥7, resisting hard object impact and malicious scratches; the composite AG+AF coating reduces direct sunlight interference while minimizing fingerprint residue, suitable for high-foot-traffic environments like stations and airports.
- Core Customization Focus: Waterproofing reaches ≥IP65 to handle rain splashing and cleaning rinsing; touch response time ≤30ms, supporting glove operation to meet passengers’ winter needs; some terminals integrate QR code scanning modules, with reserved interfaces on the bezel for device integration.
- Typical Applications: Self-service ticketing terminals at high-speed rail stations require PCI-DSS security certification; emergency terminals in subway stations support ultrasonic gesture operation (airborne page turning); wide-temperature design (-30℃~60℃) adapts to low temperatures in northern China and high temperatures in southern China.
4. Smart Home Sector: Scenario-Based Experiential Customization
- Protection Technology Adaptation: Differentiated design by scenario—kitchen equipment focuses on AF anti-oil coating (surface tension ≤18mN/m), bathroom equipment reaches IP57 waterproofing (resisting short-term immersion), and living room display equipment can optionally use AR coating to improve image quality.
- Core Customization Focus: Integrates with home style in appearance, supporting bezel-less design and body-color customization; touch accuracy ≤2mm, suitable for precise operations (e.g., parameter adjustment on smart mirror cabinets); some devices integrate voice interaction, enabling "touch + voice" dual-mode operation.
- Typical Applications: The touch area of smart toilet lids adopts IP57 waterproofing to prevent water ingress during cleaning; kitchen touch panels use frosted-texture AF coating for easy oil stain removal; outdoor touch screens on balconies are coated with AG to reduce sunlight reflection.
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