EL-90/EL-150 Marine Backlight Panel

Specification:
 
1. Product Overview
 
EL electroluminescent panel, also known as electroluminescent luminous sheet, is an ultra-thin flexible planar light source featuring full-surface luminescence and zero heat generation.
 
Different from LED dot backlight, EL panel delivers even light emission without dark areas and glare. It serves as original standard backlight light source for traditional marine rudder angle indicators and main engine tachometers, widely applied for dial illumination of pointer meters on ship console.
 
English Name: EL Backlight Panel / Marine EL Luminous Sheet
Applicable Equipment: Marine rudder angle indicator, marine tachometer, marine pointer instruments
Core Features: Uniform full-surface luminescence, no light spot, heat-free, vibration resistance, low power consumption and long service life
 
2. Working Principle
 
EL panel emits light by exciting phosphor powder under alternating electric field:
 
1. The dedicated driver converts DC ship power into high-frequency AC voltage.
2. The electric field stimulates the internal fluorescent coating to generate even cold light.
3. The panel realizes planar light emission with no temperature rise, infrared ray or stroboscopic effect during operation.
 
As a genuine planar light source, EL light ensures uniform illumination for dial scales, which cannot be achieved by dotted LED light sources.
 
3. Product Structure (5-layer composite structure)
 
1. Base PET substrate: High toughness, ageing resistance and slight bendability
2. Transparent conductive electrode layer: Light transmittance and conductivity without shielding dial scales
3. Fluorescent luminous coating: Core light-emitting layer, available in white, green and blue for marine use
4. Dielectric insulation layer: High voltage resistance, leakage prevention, moisture and salt fog protection
5. Rear conductive protective layer: Voltage stabilization shielding and anti-fall protection
 
The panel is ultra-thin with overall thickness of 0.4-0.7mm, suitable for built-in installation of round and square marine instruments.
 
4. Marine-grade Technical Parameters
 
4.1 Electrical Parameters
 
- Input voltage (matched with marine driver): DC 12V / DC 24V (mainstream ship power supply)
- Operating voltage of panel surface: AC 80-115V
- Operating frequency: 400Hz (standard frequency for marine instruments)
- Operating current: ≤0.15mA/cm²
- Power consumption: Ultra low, ≤0.8mW/cm²
- Insulation performance: High voltage resistance and anti-leakage, adaptive to humid marine environment
 
4.2 Optical Parameters
 
- Lighting mode: Full-area uniform luminescence, no dark zone or light spot
- Conventional brightness: 30-120cd/m², soft light suitable for meter observation
- Luminous color: Pure white, light green, ice blue (standard color for marine dial)
- Viewing angle: 180° full viewing angle with even brightness
- Dimming function: Multi-level dimming and stepless dimming available
 
4.3 Environmental Reliability
 
- Operating temperature: -30ºC ~ +70ºC, adaptable to cabin temperature variation
- Storage temperature: -40ºC ~ +80ºC
- Humidity resistance: Continuous operation under 95%RH non-condensing condition
- Vibration resistance: Tolerate ship sway and vibration, free from delamination and fracture
- Moisture & salt fog resistance: Sealed edge design against damp and oxidative corrosion
 
4.4 Physical Parameters
 
- Overall thickness: 0.4-0.7mm
- Material: Flexible PET composite material
- Bending performance: Small-angle bending applicable for round dial
- Service life: Half-life span ≥30000 hours
 
5. Comparison between EL Panel and LED Backlight Panel
 
Advantages of EL Panel
 
1. Extremely uniform light, no spot or shadow for accurate scale reading
2. Zero heat generation, no ageing damage to dial panel after long-time operation
3. Flicker-free and glare-free, relieve visual fatigue during long observation
4. Excellent vibration resistance, no beads or welding points, not easy to damage under bumpy sailing
5. Ultra-thin fit design, perfectly compatible with original structure of old-type instruments
 
Disadvantages of EL Panel
 
1. Lower brightness than LED, only applicable for indoor cabin instruments, not fit for outdoor strong light environment
2. Special EL inverter driver is required for normal operation
 
6. Application Scope
 
1. Backlight of round marine rudder angle indicator
2. Dial backlight of marine main engine and auxiliary engine tachometer
3. Various pointer-type marine instruments on cabin console
4. Replacement accessories for old original meters of cargo ships, fishing vessels and engineering ships
 
7. Installation & Operation Instructions
 
1. The EL panel must work with dedicated marine EL driver. Direct connection with DC power is prohibited.
2. Install flatly and closely on the back of dial. Severe folding and cutting of bare edges are forbidden.
3. Distinguish positi