Inside the P1.875 LED Module:
The Real Bill of Materials.

1. Native 16:9 Geometry: 160×90 Pixels Across 299.95×168.70 mm

Geometric distortion remains a recurring challenge in boardroom and broadcast studio LED installations when arbitrary module aspect ratios are deployed. The engineered P1.875 module features exact physical dimensions of 299.95 mm (width) by 168.70 mm (height), housing an active matrix of 160×90 pixels (14,400 active RGB pixels per tile).

The dimensional ratio is mathematically equal to 16:9 (299.95 / 168.70 ≈ 1.778). Four modules assemble into a standardized 599.9 × 337.4 mm die-cast aluminium cabinet (2×2 grid). This enables direct scaling to standard video resolutions: an array of 8×4 cabinets creates an unscaled Full HD (1920×1080) video canvas with zero letterboxing, zero pillarboxing, and perfect pixel-to-pixel mapping.

2. The Optical Emitter: Nationstar 1515 Black Body Package

Mounted on a 6-layer high-Tg FR4 circuit board (Tg > 170 °C) are 14,400 SMD1515 LED packages manufactured by Nationstar, the global benchmark for professional optical packaging.

Unlike generic low-cost displays that utilize white-face or milky-body packages, this specification adopts the low-profile Black Lamp series with a reduced package height of 1.0 mm:

• Dynamic Contrast Ratio ≥ 10,000:1: The ultra-matte black epoxy resin eliminates ambient specular reflection, delivering true deep blacks even in high ambient lux environments (boardrooms and broadcast studios);
• Ultra-Wide Viewing Angles: 160° horizontal and 140° vertical with zero hue shift or chromatic aberration across off-axis viewing positions;
• Sub-Millimetre Height Homogeneity: The precision 1.0 mm profile eliminates optical parallax between internal red, green, and blue dies.

3. 60-Channel Dedicated PWM Topology: Chipone ICND2065AP

Current regulation and greyscale modulation are executed by 60 dedicated Chipone ICND2065AP driver ICs (SSOP24 package, 0.635 mm pitch).

The PCB layout implements a fully segregated architecture with 20 independent drivers per colour channel:

• 20 Drivers for Red Channel (UR1–UR20);
• 20 Drivers for Green Channel (UG1–UG20);
• 20 Drivers for Blue Channel (UB1–UB20).

This isolated topology delivers critical operational benefits:

1. Refresh Rate up to 7,680 Hz: Scrambled PWM (S-PWM) splits duty cycles evenly across each video frame, completely eliminating rolling-shutter black bars and camera moiré under 4K broadcast cameras and smartphones;
2. Linear 16-Bit Greyscale Depth: 65,536 discrete intensity steps per colour channel prevent banding artifacts in low-light and gradient scenes (below 10% brightness);
3. Thermal Voltage Shift Compensation: Independent current gains prevent the thermal red-shift common to shared-driver modules during extended operation.

4. High-Speed Logic & Scanning: NXP USA and DMAX

To maintain high-speed line clock integrity (>30 MHz) across cascading modules, the PCB integrates 6 original NXP Semiconductors 74HC245PW octal line transceivers (TSSOP20). These high-immunity buffers eliminate ringing and signal reflection on fast digital buses.

Row multiplexing is controlled by 24 DMAX D5958E MOSFET switches (SOP16) operating at 1/45 dynamic scan. The 45S scan scheme optimizes thermal dissipation, keeping tile surface temperatures under 42 °C in continuous operation while maintaining 800–1,000 nits calibrated brightness.

5. Passive Filtering: Japanese Rubycon & Yageo X7R Capacitors

Industrial failure analysis confirms that over 70% of premature LED display breakdowns after 24–36 months are caused by the degradation of low-voltage (3.8–4.2 V) DC filtering capacitors. Swollen or leaking capacitors cause voltage ripple, leading to image flicker and module dropouts.

VeroLED eliminates this vulnerability by mandating Tier-1 passive components:

• Rubycon SMD Electrolytic Capacitors (Japan): 14 units of 220 µF 10 V (Ø 6.5 × 5.5 mm), rated for MTBF > 100,000 hours at 105 °C with ultra-low equivalent series resistance (ESR);
• Yageo Multilayer Ceramic Capacitors (MLCC) with X7R Dielectric: 66 units of 0.1 µF 50 V and 24 units of 1 µF 16 V (SMD 0603). The X7R dielectric guarantees capacitance stability within ±15% across extreme thermal excursions (-55 °C to +125 °C).

6. Hardware D65 White Balance: 1% Precision Calibration Resistors

In standard commodity displays, white balancing is handled solely by compressing software LUTs in the sending controller, which forces bit-depth truncation. In the VeroLED P1.875 module, spectral white balance is established at the hardware level using precision SMD 0603 resistors with 1% tolerance:

• Red Channel Resistors (RR1–RR20): Calibrated at 1.5 kΩ;
• Green Channel Resistors (RG1–RG20): Calibrated at 2.0 kΩ;
• Blue Channel Resistors (RB1–RB20): Calibrated at 2.4 kΩ.

This physical current balancing matches the differing Forward Voltages (Vf) of red AlInGaP dies (≈ 1.9 V) versus green and blue InGaN dies (≈ 3.1 V). The factory pre-aligns the optical output to the standard CIE 1931 D65 coordinates (x=0.3127, y=0.3290 at 6,504 K), leaving the full 16-bit software pipeline untouched for spectroradiometric fine calibration (ΔE < 1.0) using Konica Minolta CS-160 instruments.

7. Cable-Less Floating Interconnect: TriEagle Blind-Mating

The rear of the module is completely free of flat ribbon cables. Signal and DC power are interfaced via a TriEagle IMSA-9828S-60Y922 60-pin floating connector (0.8 mm pitch) with ±0.3 mm mechanical compliance. Coupled with 16 neodymium magnetic mounts and two CNC-ground locator pins (Ø 6×10 mm), the assembly guarantees surface planarity tighter than 0.05 mm between adjacent modules.

8. Architectural Summary: Tier-1 VeroLED vs Commodity Clones

To review complete system specifications, custom cabinet sizing, or certified spectroradiometric calibration reports for your project, explore our LED wall sales & installation services or read the Italian edition of this dossier sulla distinta base P1.875.