CASE STUDY
Electrical Vehicle Charging
Logic Technologies has secured a multi-year, multi-continent framework agreement with Europe’s leading industrial automation and electrification conglomerate (a Fortune Global 500 entity) to supply the DL-DM3200x-UC 32-inch ultra-rugged touch screen computer as the primary user interface for the OEM’s next-generation SiCharge-compatible high-power DC fast-charging stations (up to 600 kW).
Deployed in public, fleet, and highway environments worldwide, the 32″ display withstands extreme thermal cycling, solar loading, salt-laden coastal air, and vandalism while delivering sunlight-readable performance through multi-layer optically bonded safety glass with permanent anti-UV filtration. A first-of-its-kind thermal-optical stack ensures zero delamination or yellowing after 10+ years equivalent solar exposure.
DOWNLOAD THE EV CHARGING BROCHURE
1500-Nit, Optically Bonded, Anti-Glare Display
IP67-Rated, Thermally Managed, Vandal-Proof Display
”Custom
Integrated Media-Ready Display Solution
Client Profile
Business Unit
eMobility – DC Fast Charging Solutions
Deployment Scale
>45,000 charging ports installed globally; targeting 150,000 by 2030
Target Applications
Highway corridors, urban hubs, logistics depots, port facilities
Compliance Matrix
IEC 61851, ISO 15118, CharIN, OCPP 2.0.1, IP65/IK10, UL 2231
The OEM required a large-format HMI that
Ambient Temperature
Survives -40°C to +75°C ambient with internal power electronics generating >85°C localized heat
Sustained Brightness
Maintains >1,500 nits sustained brightness under 120,000 lux direct solar loading
Bonded Safety Glass
Uses permanently bonded safety glass immune to UV degradation
Chemical Attack
Resists chemical attack (de-icing salts, EV wash fluids, bird droppings)
Front Service Only
Enables front-service only in concrete-plinth installations
The Challenge
Public charging stations are hostile micro-environments:
Stressor |
Specification |
Thermal |
-40°C (Arctic winter) to +75°C (Death Valley summer) + 40°C internal delta |
Solar / UV |
10-year equivalent exposure (ISO 4892-2, 6,000 MJ/m²) |
Impact |
IK10 (20 joules), attempted theft with crowbars |
Corrosion |
Coastal salt mist (ISO 9227, 2,000 hours) |
Optical |
Zero haze, no yellowing, no delamination under heat + UV |
Service |
Full module replacement in <15 minutes, front access only |
Competitive displays failed within 18–24 months due to:
Optical bond failure
Delamination under thermal shock
UV-induced yellowing
of adhesives (>15% transmission loss)
Capacitive touch drift
in high humidity
Rear-service dependency
Requiring station downtime and excavation
Logic Solution
DL-DM3200x series Core Optical & Mechanical Stack
Layer |
Material |
Function |
1. Outer |
8 mm chemically strengthened aluminosilicate safety glass (SG) |
IK10, scratch-resistant (Mohs 7) |
2. Anti-UV |
Permanent cerium-doped interlayer |
Blocks 99.9% UV-A/B (280–400 nm) |
3. AR Coating |
Multi-layer MgF₂ + SiO₂ |
<0.5% reflectivity, self-cleaning oleophobic |
4. Optical Bond |
UV-inert silicone gel (Dow Corning) |
Zero yellowing, -55°C to +200°C |
5. Display |
32″ IPS LCD, 3840×2160 (4K), 1,800 nits sustained |
Local dimming (1,024 zones) |
6. Touch |
PCAP with 6 mm SG cover lens, 20-point |
Glove, rain, salt rejection |
Thermal Management Architecture
- Passive cooling only — no fans, no filters
- Graphene-enhanced aluminum heatsink bonded to LCD cell
- Smart thermal rollback: Display auto-dims to 1,200 nits at >70°C internal, preserving component life
- Black-body emissivity coating on rear chassis (ε = 0.92)
Front-Service & Vandal-Resistant Enclosure
- IP65 sealed 3 mm 316L stainless steel bezel
- Patented quarter-turn cam locks (tool-actuated, torque >120 Nm without key)
- Hinge-down front panel — swings open 110°, supported by gas struts
- Service time: <12 minutes (disconnect 2× WAGO + 1× fiber optic)
Connectivity & Security
- 2× 10 GbE (fiber SFP+), 4G/5G modem, Wi-Fi 6E
- OCPP 2.0.1 native stack, ISO 15118 PnC
- Secure boot, TPM 2.0, encrypted NVMe
- Remote OTA updates (dual-bank, signed, atomic)
Environmental Validation
Test |
Standard |
Result |
UV Aging |
ISO 4892-2 (QUV-B) |
0.8% ΔE color shift after 5,000 hrs |
Thermal Shock |
IEC 60068-2-14 |
1,000 cycles -40°C ↔ +85°C, no delamination |
Salt Mist |
ISO 9227 |
2,000 hrs, zero corrosion on connectors |
Impact |
IK10 (IEC 62262) |
Survived 25 joules |
HALT |
6-axis, 35g RMS |
Failure at 48g (margin >37%) |
Results & Impact
MTBF
>1.2 million hours (field data, 18 months)
Optical Lifetime
<2% brightness decay after 60,000 hrs @ 65°C
Service Downtime
<15 min per incident (vs. 4+ hours for rear-access)
Vandalism Resistance
0 successful breaches in high-risk urban sites
Energy Efficiency
28% lower display power via local dimming vs. competitors
Conclusion
The DL-DM3200x-UC represents a paradigm shift in large-format outdoor HMI durability. By combining multi-layer UV-inert optical bonding, passive thermal supremacy, and front-service vandal-proof mechanics, Logic Technologies has enabled the OEM to deploy maintenance-minimized, future-proof charging stations at scale.
From Our Customer
“The 32-inch Logic HMI is the only display that survived our 10-year accelerated aging chamber without a single optical or mechanical failure. It’s now the global standard interface for our entire DC fast-charging portfolio—from Arctic truck stops to desert logistics hubs”
– Head of HMI & UX, Global eMobility Division
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