Content last revised on January 25, 2026
AG320240A4: A Robust 5.7-inch Monochrome Display for Industrial HMIs
The AG320240A4 is a 5.7-inch STN monochrome LCD module engineered for clarity and performance in industrial control and instrumentation panels. Delivering a crisp 320x240 QVGA resolution and leveraging a reliable CCFL backlight, this display provides excellent readability for essential data and graphical interfaces. Its core design focuses on providing a durable, long-life visual output for demanding operational environments. This display is particularly suited for systems where unambiguous data presentation is critical and color is not a primary requirement, such as in legacy system upgrades or specific-purpose machine controllers. For applications demanding a wider operational temperature range, the related G057VN01 V2 may be a suitable consideration.
Key Parameter Overview
Decoding the Specs for Industrial Interface Design
The technical specifications of the AG320240A4 are tailored for integration into industrial equipment where performance and reliability are paramount. The combination of its physical dimensions, display technology, and operational range defines its suitability for specific Human-Machine Interface (HMI) applications.
| Category | Parameter | Specification | Engineering Value |
|---|---|---|---|
| Display | Screen Size | 5.7 inches | Provides a compact yet sufficient viewing area for essential data, suitable for space-constrained panels. |
| Display | Resolution | 320 x 240 (QVGA) | Offers adequate pixel density for displaying clear text, numerical data, and basic graphical elements. |
| Display | Display Technology | STN (Super-Twisted Nematic), Transmissive | A mature and cost-effective technology providing good contrast for monochrome applications. The transmissive nature ensures readability with the backlight. |
| Optical | Contrast Ratio | 7:1 (Typ.) | Ensures clear differentiation between active and inactive pixels, which is critical for legibility in varied lighting conditions. |
| Optical | Viewing Angle | 35°/35°(L/R), 40°/35°(U/D) (Typ.) | Defines the optimal viewing cone for operators; the 6 o'clock viewing direction is a key consideration for ergonomic panel layout. |
| Mechanical & Environmental | Active Area | 115.185(W) × 86.385(H) mm | Specifies the exact usable screen dimensions for precise mechanical integration into front panels or enclosures. |
| Mechanical & Environmental | Operating Temperature | 0°C to 50°C | Suitable for controlled indoor industrial environments, such as factory floors and control rooms. |
| Backlight | Backlight Type | CCFL (Cold Cathode Fluorescent Lamp) | A proven backlight technology known for its stable and long-lasting illumination, though an external driver is required. |
Download the AG320240A4 datasheet for detailed specifications and performance curves. (Note: A direct official datasheet link was not available from the manufacturer at the time of writing; third-party sources should be used with caution).
Application Scenarios & Value
System-Level Benefits in Industrial Controls and Instrumentation
The AG320240A4 is engineered for applications where clear, reliable data visualization is a priority over high-color, high-resolution graphics. Its design provides tangible benefits in specific industrial settings.
A primary application for this display is in legacy industrial machinery control panels. Many existing systems were designed around monochrome QVGA displays. When a display fails, engineers face the challenge of finding a form-fit-function replacement that does not require extensive software or mechanical rework. The AG320240A4's standard 5.7-inch QVGA format and parallel data interface make it a strong candidate for drop-in replacement, minimizing downtime and extending the life of valuable capital equipment. The 7:1 contrast ratio is sufficient to ensure that critical alerts, process values, and status indicators are clearly legible to operators on the factory floor.
Its straightforward design also makes it an excellent choice for new equipment designs that require a dedicated, simple user interface. This includes applications such as:
- Test and measurement equipment
- Process controllers and data loggers
- Vending machine interfaces
- Power supply and generator control units
In these systems, the display's role is functional: to present data clearly without the complexity or power consumption of a full-color TFT. For systems requiring higher resolution in a similar form factor, the KCG057QV1DB-G000 offers a 640x480 resolution.
Frequently Asked Questions (FAQ)
What is the primary benefit of the STN display technology used in the AG320240A4?
STN (Super-Twisted Nematic) is a mature and highly reliable monochrome display technology. Its main advantage is providing excellent text and simple graphic readability with lower power consumption compared to color TFT displays, making it a cost-effective choice for function-specific industrial interfaces.
Is an external driver required for the CCFL backlight?
Yes, the AG320240A4's CCFL backlight system requires an external inverter or driver to supply the high voltage necessary for its operation. This is a standard requirement for CCFL technology and should be factored into the system's electronic design.
Mechanical Robustness & Environmental Resilience
Engineered for Stability in Controlled Industrial Environments
The AG320240A4 is designed to provide consistent performance within a defined operational envelope. Its specified operating temperature range of 0°C to 50°C makes it well-suited for deployment in indoor industrial settings such as control rooms, assembly lines, and automated manufacturing cells, where ambient conditions are managed. The storage temperature range of -20°C to 70°C provides resilience during shipping and storage, ensuring the component remains stable before integration.
The physical construction, featuring a standard 5.7-inch form factor with a durable bezel, facilitates secure mounting into equipment panels. This mechanical stability is crucial for HMIs that may be subject to minor operational vibrations. While not intended for extreme temperature or high-shock environments, its build quality is aligned with the expectations for precision instrumentation and control hardware, ensuring long-term operational integrity under specified conditions.
Get in Touch
To evaluate the AG320240A4 for your specific application or to inquire about its integration requirements, please contact our technical sales team. We can provide further details to support your design and procurement process.