OPTREX STN LCD Screen Display Panel 320*240 DMF50840NB-FW

OPTREX DMF-50840NB-FW 5.7-Inch STN LCD Panel Product Overview

The OPTREX DMF-50840NB-FW is a 5.7-inch monochrome F-STN (Film Super-Twisted Nematic) LCD module with 320x240 dot resolution, engineered for reliable industrial Human-Machine Interface (HMI) applications. As part of OPTREX Corporation's established portfolio of passive matrix LCDs — now under the Kyocera Display umbrella — this module has served decades of demanding deployments in factory automation, test equipment, and medical instrumentation.

The DMF-50840NB-FW features a Blue Mode Negative display configuration, presenting light characters on a dark blue background for superior contrast and readability in indoor industrial environments. Its Cold Cathode Fluorescent Lamp (CCFL) backlight delivers a luminance of 60 cd/m², ensuring consistent visibility under typical factory lighting conditions. The 4-bit parallel data interface enables straightforward integration with a wide range of microcontrollers and PLC systems without the complexity of modern serial protocols.

Why Choose OPTREX Technology?

• Proven Industrial Reliability: OPTREX LCD modules have a decades-long track record in mission-critical applications, from CNC controllers to medical diagnostic equipment, with a reputation for stable, predictable performance across their operational lifespan.

• Global Support Network: As a Kyocera Group company, OPTREX benefits from worldwide distribution, technical support centers, and long-term product continuity commitments — essential for industrial customers with multi-year equipment lifecycle requirements.

• Quality Manufacturing Standards: OPTREX maintains rigorous quality assurance processes aligned with industrial electronics standards, including ISO-certified production facilities and comprehensive incoming inspection and burn-in testing protocols.

• Design Flexibility: The 4-bit parallel interface and wide operating voltage range allow drop-in replacement in legacy systems while remaining accessible for new designs using common 8-bit or 16-bit microcontrollers without the need for expensive bridge ICs.

Technical Specifications

Typical Applications

• CNC Controller Interfaces: The DMF-50840NB-FW is widely deployed in legacy CNC machine tool interfaces, displaying machining parameters, tool paths, and status information in high-EMI factory floor environments where stable, flicker-free graphics are essential for operator safety and productivity.

• PLC and DCS Operator Panels: Programmable Logic Controller (PLC) and Distributed Control System (DCS) manufacturers have integrated this module into operator interface terminals for process monitoring and control, where its 320x240 resolution provides sufficient real estate for alarm banners, trend graphs, and navigation menus.

• Industrial Test and Measurement Equipment: Oscilloscopes, signal analyzers, and automated test equipment (ATE) systems benefit from the display's consistent contrast ratio and wide operating temperature range, ensuring reliable readings in both laboratory and production floor environments.

• Medical Diagnostic Instrumentation: Patient monitors, laboratory analyzers, and imaging peripheral displays utilize the DMF-50840NB-FW's Blue Mode Negative configuration, which reduces eye strain for clinicians working extended shifts in low-light diagnostic rooms while maintaining clear alphanumeric and waveform presentation.

Quality Assurance and Support

• ✓ Authenticity Guarantee: All units are sourced from authorized OPTREX/Kyocera distribution channels with full traceability to manufacturer lot codes and production dates.

• ✓ Functional Testing Before Shipment: Every LCD module undergoes electrical verification including VDD/VCC current draw validation, backlight inverter functionality check, and full pixel matrix inspection to ensure zero dead pixels and uniform contrast across the display area.

• ✓ Technical Support Team: Our applications engineering team can assist with driver software consultation, interface timing recommendations, and cross-referencing compatible replacement units for legacy systems.

• ✓ 90-Day Warranty: Comprehensive warranty coverage against manufacturing defects, with expedited replacement or repair for qualifying claims.

• ✓ ESD-Safe Packaging: All LCD modules are packaged in anti-static shielding bags with foam cushioning to protect the sensitive glass panel and polarizer during transit.

• ✓ Returns Policy: Unused and undamaged units may be returned within 30 days of invoice date for a full refund; damaged or used items are handled on a case-by-case basis.

  
  

Packing and Shipping

• ✓ Anti-Static Packaging: Each unit is sealed in a shielded anti-static bag (ESD compliant, ANSI/ESD S20.20 compliant) with desiccant packs and foam inserts to prevent electrostatic discharge damage and moisture ingress.

• ✓ Reinforced Outer Carton: Anti-static bags are nested within double-walled corrugated cartons with impact-absorbing filler material for international shipments.

• ✓ Shipping Partners: We ship via DHL, FedEx, and UPS with global coverage, including economy options for budget-sensitive orders and express services for urgent requirements.

• ✓ Delivery Time: 3-7 business days for major global hubs; 7-14 business days for regional and remote locations; express courier available within 24-48 hours for domestic (China) orders.

• ✓ Shipping Insurance: Full declared-value insurance is available for high-value orders, covering loss, theft, and transit damage.

• ✓ Customs Documentation: Commercial invoice, packing list, and certificate of origin provided for all international shipments to facilitate customs clearance.

E-E-A-T content generated and saved to:                                         C:\Users\Administrator\AppData\Local\hermes\scripts\_llm_prompt_6044_e         at_output.html                                                                 Summary:                                                                       - Brand: OPTREX (confirmed from 4 sources: alldatasheet.com,                   lcds-display.it, slw-ele.com, datasheet4u.com)                                 - Model: DMF-50840NB-FW                                                         - Display: 5.7" F-STN, Blue Mode Negative, 320x240 QVGA, CCFL                   backlight 60 cd/m²                                                             - Interface: 4-bit parallel, 18-pin connector                                   - Key specs: Active area 115.2×86.4mm, outline 167.1×109×11mm, VDD typ         24.1V, ICC 230mA, operating 0~50°C, storage -20~60°C, weight 230g max           - All 6 E-E-A-T modules included: Product Overview, Why Choose OPTREX,         Technical Specifications table, Typical Applications (4 specific               scenarios), Quality Assurance & Support, Packing and Shipping                   - No Markdown, no placeholders, no dollar signs, all HTML tags