LT084AC27500: 8.4-inch SVGA Display for Demanding Industrial Environments
Engineered for Reliability and Clarity in Challenging Conditions
Content last revised on October 2, 2025.
The LT084AC27500 is a robust 8.4-inch color TFT-LCD module engineered for steadfast visual performance in demanding industrial and commercial applications. Its core value lies in delivering consistent readability across a wide operational temperature range, supported by high-brightness, anti-glare optics. With key specifications of 8.4-inch | SVGA (800x600) | 400 cd/m² Brightness | -20 to +70°C Operating Temperature, this display provides exceptional environmental resilience and clear visibility in high ambient light. It is specifically designed to address the need for reliable visual interfaces in environments where standard displays falter due to temperature extremes or glare. For industrial HMI systems requiring proven durability and consistent optical performance, the LT084AC27500 offers a purpose-built solution.
Application Scenarios & Value
Delivering System-Level Uptime in Factory Automation and Control Systems
The LT084AC27500 is engineered to excel in environments where operational consistency is non-negotiable. Its primary value proposition is best illustrated in factory automation and process control applications. Consider an HMI panel for a CNC machine or a packaging line controller located on a factory floor. Such environments often experience significant temperature swings from cold morning start-ups to high afternoon heat, along with intense, multi-directional overhead lighting. The LT084AC27500 directly addresses these challenges. Its wide operating temperature range of -20 to +70°C ensures flicker-free, reliable performance without the need for auxiliary heating or cooling systems, simplifying enclosure design and reducing potential points of failure. What is the benefit of its 400 nit brightness? It provides sufficient luminance to overcome the bright ambient light typical of industrial settings, ensuring that critical process data, warnings, and machine status are always clearly legible to the operator. This combination of thermal resilience and optical performance translates directly to reduced downtime and improved operator efficiency.
This model is an excellent fit for SVGA-native systems. For applications requiring a different resolution but similar ruggedness in an 8.4-inch form factor, the related AA084VC03 offers a VGA (640x480) alternative.
Key Parameter Overview
Decoding the Specifications for Environmental Resilience
The technical specifications of the LT084AC27500 are optimized for longevity and performance in industrial settings. The parameters below highlight its suitability for integration into robust HMI and control systems.
| Parameter | Specification | Engineering Significance |
|---|---|---|
| Screen Size | 8.4 inches | Provides a compact yet sufficient viewing area for data and GUI elements. |
| Resolution | 800 (RGB) x 600 [SVGA] | Standard resolution ensures compatibility with a wide range of industrial controllers and single-board computers. |
| Brightness | 400 cd/m² (Typical) | Ensures clear readability in brightly lit indoor environments like factory floors or control rooms. |
| Contrast Ratio | 600:1 (Typical) | Delivers sharp differentiation between colors and shades, crucial for detailed graphical interfaces. This ratio is like the dynamic range of the display, defining the distinction between the deepest blacks and brightest whites. |
| Viewing Angle | 80/80/80/60 (L/R/U/D) | Offers wide, consistent viewing angles, allowing operators to view the screen from off-center positions without color distortion. |
| Interface Type | LVDS (1 ch, 6-bit), 20 pins | A standard, low-noise digital interface that simplifies system integration and ensures robust signal integrity. For more on this, see the Texas Instruments overview of the LVDS Interface. |
| Surface Treatment | Anti-glare | Diffuses reflections from ambient light sources, reducing eye strain and improving legibility. |
| Operating Temperature | -20 ~ 70 °C | Critical for deployment in non-climate-controlled environments, from outdoor kiosks to industrial machinery. |
| Backlight System | WLED | Provides an efficient and long-lasting light source for the display. |
Download the LT084AC27500 datasheet for detailed specifications and performance curves.
Technical & Design Deep Dive
The Engineering Behind the Anti-Glare Surface and Thermal Resilience
Two key design choices elevate the LT084AC27500 beyond a standard display: its surface treatment and its thermal design. The Anti-Glare (AG) surface is not merely a coating; it's a micro-textured finish that actively diffuses specular reflections. Imagine trying to read a glossy magazine under a bright light—the reflection can obscure the text. The AG surface acts like a matte photo finish, scattering that light to maintain contrast and readability from a wider range of angles. For an HMI in a dynamic lighting environment, this directly reduces the chance of an operator misreading critical information due to a sudden reflection from an overhead lamp or window.
Complementing this is its thermal resilience. Operating reliably from -20°C to +70°C is a significant engineering achievement. It implies that the liquid crystal material, driver ICs, and backlight components have been selected and qualified to maintain stable performance across this 90°C delta. This capability simplifies the design of the end product, such as a display for heavy machinery or a panel within a NEMA enclosure, potentially eliminating the cost, complexity, and power draw of internal heaters or fans that would otherwise be required to keep a lesser display within its operational limits.
Frequently Asked Questions (FAQ)
How does the Anti-Glare (AG) surface on the LT084AC27500 benefit industrial applications?
The AG surface significantly improves usability in environments with variable and direct lighting. By diffusing reflections, it prevents bright spots from obscuring the screen, reducing operator eye strain and minimizing the risk of misinterpreting critical data on an HMI or SCADA system display.
What is the primary advantage of the -20 to +70°C operating temperature range?
This wide temperature range allows the LT084AC27500 to be deployed in non-climate-controlled settings, such as factory floors, warehouses, or sheltered outdoor terminals, without requiring external heating or cooling systems. This enhances system reliability, simplifies mechanical design, and lowers the total cost of ownership.
Is the 800x600 SVGA resolution sufficient for modern industrial interfaces?
Yes, for a large number of industrial control and monitoring applications, SVGA provides an ideal balance. It offers sufficient pixel density on an 8.4-inch screen to clearly render numerical data, status indicators, and basic graphical elements common in PLC and machine control interfaces, while remaining compatible with a vast ecosystem of established industrial hardware and software.
Strategic Integration for Long-Term System Reliability
Selecting a display module like the LT084AC27500 is a strategic decision that impacts the long-term reliability and total cost of ownership of the final system. By specifying a component purpose-built for the environmental stresses of industrial applications, engineers can mitigate risks associated with display failure, reduce the complexity of thermal management, and deliver a product with a higher mean time between failures (MTBF). This focus on foundational robustness ensures the visual interface remains a dependable asset, not a potential liability, throughout the product's operational life.
