Samsung LTM190EX-L21 | Legacy-Compatible 19" SXGA Display for Mission-Critical Systems
The Samsung LTM190EX-L21 is a 19.0-inch a-Si TFT-LCD panel engineered for applications where reliability, specific aspect ratios, and long-term performance are not just features, but foundational requirements. This display is a workhorse, designed to integrate seamlessly into existing systems and provide the visual clarity essential for industrial, medical, and professional environments. It represents a strategic choice for engineers managing long-lifecycle equipment, prioritizing stability over the latest market trends.
Key Engineering Highlights
- SXGA Resolution (1280 x 1024): Provides a classic 5:4 aspect ratio, ideal for legacy software interfaces and specialized equipment that require more vertical screen real estate than typical widescreen displays.
- Proven CCFL Backlight: Delivers excellent brightness uniformity and stable color performance, a critical factor for applications where visual consistency is paramount over the product's lifespan.
- Standard LVDS Interface: Utilizes a 2-channel, 8-bit Low-Voltage Differential Signaling (LVDS Interface) for robust data transmission, ensuring signal integrity in electronically noisy industrial settings.
- Anti-Glare Surface Treatment: Minimizes reflections from ambient light, enhancing readability and reducing operator eye strain in challenging lighting conditions.
Critical Performance Parameters at a Glance
For engineers requiring precise specifications for system integration, the following table outlines the core performance metrics of the LTM190EX-L21. For a complete dataset, you can download the full LTM190EX-L21 datasheet.
| Parameter | Specification |
|---|---|
| Screen Size | 19.0 inch |
| Resolution | 1280(RGB) × 1024 [SXGA] |
| Panel Technology | a-Si TFT-LCD, TN |
| Brightness | 300 cd/m² (Typ.) |
| Contrast Ratio | 1000:1 (Typ.) |
| Viewing Angle | 80/80/80/80 (Typ.)(CR≥10) |
| Response Time | 5ms (Typ.)(Tr+Td) |
| Operating Temperature | 0 ~ 50 °C |
| Backlight System | 4 pcs CCFL with Inverter |
Application Deep Dive: Where the LTM190EX-L21 Excels
The specific feature set of the Samsung LTM190EX-L21 makes it a superior choice for several key industries where performance cannot be compromised.
- Medical Diagnostic Stations: The high contrast ratio and SXGA resolution are critical for rendering detailed grayscale images in systems used for radiology, ultrasound, and other diagnostic modalities. The 5:4 format is often a perfect fit for the user interfaces of dedicated medical software.
- Industrial Control Panels (HMI): In manufacturing and process control, many systems are designed around a 5:4 aspect ratio. The LTM190EX-L21 serves as a reliable drop-in replacement or upgrade, ensuring operational continuity without the need for costly software redevelopment. Its durability is essential for surviving the factory floor environment.
- Air Traffic Control & Marine Systems: These are safety-critical applications where information must be unambiguous. The display's wide viewing angles and anti-glare surface ensure that multiple operators can view data clearly from different positions, a key factor in collaborative control rooms.
To learn more about the fundamentals of this technology, explore our ultimate guide to TFT-LCDs.
Engineer's FAQ for the LTM190EX-L21
We understand the technical considerations that go into display selection. Here are answers to common questions from design engineers.
1. Why choose a CCFL-backlit display in an LED-dominated market?
While LED is the standard for new consumer designs, CCFL technology is a mature and highly stable platform. For long-lifecycle industrial and medical equipment, consistency is key. A CCFL backlight like the one in the LTM190EX-L21 provides a known spectral output and performance curve, often eliminating the need to re-certify a device when a replacement screen is needed. It is the definitive choice for maintaining system integrity and avoiding costly redesigns for established products.
2. What are the key integration considerations for this panel?
The primary considerations are the LVDS interface and the CCFL power supply. The 2ch, 8-bit LVDS interface is standard, but your controller board must be configured to match. More importantly, this panel requires a compatible high-voltage inverter to power the four CCFL tubes. Ensuring you have a matched inverter is critical for achieving the specified brightness and lifespan of the display. If you require assistance with sourcing compatible components or have integration questions, please contact our technical team for expert support.
