Sharp LQ12S56 | Engineered for Unwavering Industrial Clarity and Reliability
The Sharp LQ12S56 is a testament to the design philosophy of building components that last. As a 12.1-inch SVGA industrial-grade TFT-LCD, it represents a class of displays engineered not for fleeting consumer trends, but for the rigorous, long-life cycles of critical industrial machinery. For engineers designing new systems for stable environments or maintenance managers seeking a reliable drop-in replacement for existing HMIs, the LQ12S56 delivers proven performance where it matters most.
Product Highlights: The Industrial Workhorse
The value of the Sharp LQ12S56 lies in its focused, robust feature set, optimized for industrial environments rather than office desks. It provides a stable and dependable visual interface for machinery that operates for decades.
- Industrial-Grade Durability: Built with a wide operating temperature range and robust construction to withstand the vibrations and thermal stresses common in factory floors and control rooms.
- Proven Legacy & Reliability: As a long-standing model, its performance characteristics are well-documented, ensuring predictable behavior and simplifying system integration, especially for replacement and MRO (Maintenance, Repair, and Operations) purposes.
- Clarity for Critical Data: The 800 x 600 SVGA resolution is perfectly matched for displaying essential process data, schematics, and control menus without overwhelming the operator, a key factor in many legacy HMI applications.
- Consistent Performance: Utilizes established Amorphous Silicon (a-Si) technology, prized for its stability and cost-effectiveness in industrial applications.
Key Technical Specifications
Engineers require precise data for integration. Below is a summary of the critical performance parameters for the Sharp LQ12S56. For a complete datasheet and further technical consultation, please contact our technical team.
| Parameter | Specification |
|---|---|
| Manufacturer | Sharp |
| Model | LQ12S56 |
| Screen Size | 12.1 inch |
| Resolution | 800(RGB)×600, SVGA |
| Display Technology | a-Si TFT-LCD, Normally White, Transmissive |
| Brightness | 200 cd/m² (Typ.) |
| Contrast Ratio | 300:1 (Typ.) |
| Backlight System | 1 pc CCFL with Inverter |
| Operating Temperature | -10 ~ 65 °C |
| Storage Temperature | -30 ~ 70 °C |
| Interface Type | Parallel RGB (1 ch, 6-bit) |
Application Scenarios & Engineering Value
The LQ12S56 excels in applications where reliability and functional clarity trump cutting-edge specs. Its design directly addresses the pain points of specific industrial sectors.
- CNC Machinery and Process Control: The SVGA resolution and 12.1" diagonal are a perfect match for the user interfaces of many computer numerical control (CNC) machines and programmable logic controllers (PLCs). The display’s primary function—presenting critical machine status, toolpaths, and diagnostic codes clearly—is expertly fulfilled.
- Medical Monitoring Equipment: In environments where equipment life cycles are long and validation is costly, using a proven component like the LQ12S56 is a strategic advantage. It provides a stable platform for displaying vital signs and patient data.
- Test and Measurement Instruments: For oscilloscopes, spectrum analyzers, and other benchtop equipment, the display offers sufficient detail for waveform analysis and measurement readouts, backed by long-term operational stability. Understanding the role of reliable displays is crucial when engineering for extreme environments.
Technical Deep-Dive: Why CCFL and a-Si Still Matter
While modern displays often feature LED backlights and advanced TFT technologies, the LQ12S56's architecture provides specific advantages for its target applications. The use of a Cold Cathode Fluorescent Lamp (CCFL) backlight, while a legacy technology, offers a known spectral output and performance profile, making it a 1:1 replacement for older systems without needing to re-engineer the power supply or dimming controls. This is a critical consideration for MRO, as it minimizes downtime and validation costs. Furthermore, its a-Si TFT-LCD structure is a mature, robust technology known for its consistency and reliability over long operational periods, a cornerstone for many industrial LCD displays.
Frequently Asked Questions (FAQ) for Design Engineers
Is the Sharp LQ12S56 a suitable replacement for other 12.1" SVGA panels?
In many cases, yes. Key factors for compatibility are the mechanical mounting points, the connector type (Parallel RGB), and the pinout. The LQ12S56 was a popular model, making it a strong candidate for replacing similar-era panels in industrial HMIs. We always recommend a cross-reference check against the original panel's datasheet. Our team can assist with this verification.
What are the considerations for the CCFL inverter?
The LQ12S56 is designed to work with an external CCFL inverter. When replacing a display, it is often best practice to use the existing, validated inverter if it is still functional. If a new inverter is required, it must be matched to the voltage and current requirements of the CCFL lamp. This is a crucial step to ensure proper brightness, dimming control, and backlight longevity. To learn more about the fundamentals, our guide to TFT LCDs offers in-depth information.
