DG32240-13 | Robust 320x240 Monochrome Graphic LCD for Industrial HMIs
The DG32240-13 is a high-performance monochrome graphic LCD module engineered for clarity, reliability, and ease of integration in demanding industrial environments. Designed as a workhorse display, it delivers a crisp 320x240 resolution, providing the essential visual interface for applications where data accuracy and operational uptime are non-negotiable. This module is an ideal solution for engineers developing new systems or upgrading legacy equipment requiring a durable, easy-to-read human-machine interface (HMI).
Product Highlights at a Glance
- Clear Visuals: 320 x 240 dot matrix resolution powered by FSTN positive display technology for superior clarity.
- Industrial-Grade Durability: A wide operating temperature range of -20°C to +70°C ensures reliable performance in factory floors, unconditioned enclosures, and field instruments.
- Efficient & Long-Lasting Illumination: Features a high-brightness white LED backlight for excellent readability, low power consumption, and extended operational life.
- Simplified Integration: Built-in RA8835 (or equivalent) controller streamlines the design process, reducing development time and bill of materials (BOM) complexity.
Technical Deep Dive: Engineering for Performance
The DG32240-13 isn't just another display; its core components are selected to solve specific engineering challenges. Two key features stand out: the display technology and the backlighting system.
FSTN (Film Compensated Super-Twisted Nematic) Display: Unlike standard STN displays, the DG32240-13 utilizes FSTN technology. By adding a retardation film layer, it effectively compensates for color dispersion, resulting in a sharper, higher-contrast black-and-white display. For an engineer, this translates directly to a wider, more forgiving viewing angle and a significantly improved Contrast Ratio. The result is an interface that is easily readable from various positions, reducing operator error and fatigue in critical monitoring tasks.
White LED Backlight System: Legacy displays often relied on Cold Cathode Fluorescent Lamps (CCFL), which required high-voltage inverters and had a limited lifespan. The DG32240-13 incorporates a modern white LED backlight, offering several distinct advantages. It operates on a low DC voltage, simplifying power supply design. Furthermore, LEDs provide a much longer operational lifetime and are more resistant to shock and vibration—critical attributes for any industrial equipment. For a deeper understanding of this technology, explore our guide on the energy efficiency of LED backlights.
Application Scenarios and Value Proposition
The robust feature set of the DG32240-13 makes it an excellent fit across a spectrum of professional applications:
- Industrial Control Panels: The 320x240 resolution is perfectly suited for displaying process variables, system status menus, and simple trend graphs. Its wide temperature range ensures functionality whether the panel is in a climate-controlled room or on a factory floor.
- Test and Measurement Instruments: In devices like oscilloscopes, spectrum analyzers, and power meters, data clarity is paramount. The high-contrast FSTN screen ensures that numerical readings and waveforms are presented without ambiguity.
- Medical Devices: For non-diagnostic monitors, pumps, and lab equipment, this display provides a reliable and clear interface for setting parameters and viewing status, backed by the longevity of its LED backlight.
- Point-of-Sale (POS) Systems: The module's compact form factor and clear text display make it an excellent choice for operator-facing screens in specialized retail or ticketing environments.
Key Parameter Overview
The following table outlines the core technical specifications for design engineers. For complete details, download the full DG32240-13 datasheet.
| Parameter | Specification |
|---|---|
| Display Type | FSTN / Positive / Transmissive |
| Resolution | 320 x 240 Dots |
| Backlight | White LED |
| Controller IC | RA8835 or Equivalent |
| Viewing Angle | 6 O'clock |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -30°C to +80°C |
| Module Dimensions (W x H x D) | 160.0mm x 109.0mm x 11.0mm |
Frequently Asked Questions (FAQ)
Q: What is the primary advantage of the integrated RA8835 controller?
A: The integrated RA8835 controller is a significant benefit for design engineers. It manages the display RAM and pixel mapping, offloading this task from the host microcontroller. This simplifies firmware development, as engineers can use high-level commands for drawing text and basic graphics instead of manually handling pixel data. It reduces the MCU's processing load and accelerates time-to-market.
Q: How does this module compare to a color TFT display?
A: While color TFTs offer richer visuals, the DG32240-13 monochrome display excels in applications where clarity of information, power efficiency, and cost-effectiveness are the primary drivers. Its contrast is often perceived as sharper for text and numerical data, and its lower power consumption and simpler driving requirements make it a more robust and efficient choice for many industrial and instrumentation tasks.
For projects that demand a reliable, high-contrast visual interface without the complexity of a full-color screen, the DG32240-13 offers an engineered solution. If you need to discuss your specific application requirements or explore our full range of industrial LCD displays, please contact our technical team for expert guidance.
