Content last revised on January 30, 2026
LQ104S1DG34: Engineering a 10.4-inch SVGA TFT-LCD for High-Reliability Industrial Applications
Product Overview & Key Specifications
Engineered for Visual Clarity in Demanding Thermal Environments
The Sharp LQ104S1DG34 is a 10.4-inch amorphous silicon TFT-LCD module designed for robust performance in industrial systems where operational reliability is paramount. It delivers consistent SVGA resolution with optical characteristics engineered to maintain readability across extreme temperatures and in high ambient light conditions. Key specifications include: 10.4-inch SVGA | 800x600 Pixels | 350 cd/m² Brightness | -30°C to +80°C Operating Temperature. This display provides exceptional thermal tolerance and enhanced visual performance. For applications requiring a different interface or higher resolution, system designers might also evaluate the G104SN03 V5. Built for systems operating in uncontrolled environments, the LQ104S1DG34's wide temperature range makes it an optimal choice for outdoor kiosks and factory floor HMIs.
Application Scenarios & Value
System-Level Benefits in Industrial Automation and Control
The true value of the LQ104S1DG34 is realized in challenging operational contexts. Consider a Human-Machine Interface (HMI) for a process control system located on a factory floor. This environment often experiences significant temperature swings, from cold startups in the morning to high heat during peak operations. A consumer-grade display would fail, showing image lag or permanent damage. The LQ104S1DG34's expansive operating temperature range of -30°C to +80°C ensures consistent, reliable performance without requiring costly and complex external heating or cooling systems. This directly translates to simplified system design, lower bill of materials (BOM), and increased uptime for critical industrial automation infrastructure.
Furthermore, the 350-nit brightness, combined with an anti-glare surface treatment, directly addresses the issue of readability under intense factory lighting. What is the benefit of its anti-glare surface? It minimizes specular reflections, reducing operator eye strain and improving the accuracy of data interpretation. This focus on fundamental industrial requirements makes the panel a workhorse for applications where clear, dependable visual data is critical to safety and efficiency. To learn more about designing for readability, explore our definitive engineer's guide to sunlight-readable HMIs.
Key Parameter Overview
Decoding the Specs for Environmental Resilience and Optical Performance
The specifications of the LQ104S1DG34 are tailored for industrial integration. The luminance of 350 cd/m² can be understood as the panel's visual "horsepower." While a typical office monitor may have 250 cd/m², the LQ104S1DG34's higher output provides the necessary strength to punch through the "visual noise" of bright ambient light, ensuring data remains legible. This is a critical factor for usability in field service equipment, marine electronics, and outdoor terminals.
| Feature | Specification | Engineering Implication |
|---|---|---|
| Display Size | 10.4 inch (26 cm) diagonal | Standard size for a wide range of industrial panels and control units. |
| Resolution | 800(H) x 600(V) pixels (SVGA) | Provides clear, sharp rendering of GUIs and data for typical HMI applications. |
| Luminance | 350 cd/m² (Typ.) | Ensures good readability in well-lit indoor and covered outdoor environments. |
| Contrast Ratio | 300:1 (Typ.) | Delivers distinct separation between light and dark elements. |
| Operating Temperature | -30°C to +80°C | Enables deployment in unconditioned environments, reducing system thermal management costs. |
| Storage Temperature | -30°C to +80°C | High resilience against damage during transport and storage in extreme climates. |
| Signal Interface | LVDS (6-bit) | A standard, low-noise interface for easy integration with single-board computers and display controllers. |
| Surface Treatment | Anti-glare, Hard coating (3H) | Minimizes distracting reflections and provides scratch resistance for durability. |
| Backlight | 1x CCFL with built-in inverter | An integrated solution that simplifies the power delivery design for the backlight system. |
Frequently Asked Questions
What is the primary benefit of the -30°C to +80°C operating temperature range?
This wide range allows the display to be integrated into systems deployed in environments without climate control, such as outdoor payment terminals, vehicle-mounted displays, or unheated industrial sheds. It eliminates the need for auxiliary heaters or fans, which simplifies the overall product design, lowers power consumption, and increases the mean time between failures (MTBF) of the host system.
How does the built-in backlight inverter for the CCFL simplify system integration?
The inclusion of a dedicated inverter board means that designers do not need to source, qualify, and integrate a separate high-voltage component to drive the Cold Cathode Fluorescent Lamp (CCFL) backlight. The system only needs to provide a standard low-voltage DC input to the display module, streamlining the power architecture and reducing potential EMI challenges associated with external inverters.
Is the 6-bit LVDS interface on this module sufficient for typical industrial GUI applications?
Yes, for the majority of industrial HMI applications that display process data, status indicators, and control menus, a 6-bit LVDS Interface, capable of rendering 262,144 colors, is perfectly adequate. It provides clear, distinct graphics and text without the higher cost and data bandwidth requirements of 8-bit or 10-bit interfaces, striking an optimal balance between performance and system cost for its intended SVGA resolution.
Engineering and Design Considerations
For engineers specifying the LQ104S1DG34, the primary consideration should be leveraging its environmental resilience. The wide operating temperature range is a significant design asset. Think of it like an "all-season tire" for displays; it performs reliably in conditions where standard "summer tire" panels would fail. This capability directly impacts enclosure design, potentially allowing for smaller, fanless solutions that are sealed against dust and moisture, leading to a higher overall IP rating. When evaluating displays, it's crucial to understand the difference between industrial and consumer-grade screens, as the long-term reliability of a component like this far outweighs initial cost savings from a less robust alternative. For robust and reliable display solutions in various industrial settings, consider exploring options such as the LQ064V3DG06 or the AA057QD01 which offer different sizes and features for diverse application needs.
