LQ121S1LG49 is a classic 12.1-inch SVGA industrial-grade a-Si TFT-LCD module manufactured by Sharp Corporation. Native resolution 800(RGB)×600, standard 4:3 landscape format, TN transmissive normally white display mode, dual straight CCFL edge backlight (without built-in inverter), equipped with single-channel 6-bit LVDS signal interface.
This rugged industrial display panel supports image horizontal & vertical flip function, widely adopted for industrial HMI, CNC controllers, medical equipment, factory automation equipment maintenance and screen replacement. It adopts anti-glare matte polarizer and stable long-lifetime backlight, suitable for continuous indoor workshop operation. This model has reached End of Life (EOL), only available as aftermarket maintenance spare panels. All technical specifications refer to official Sharp datasheet for hardware matching, equipment retrofit and debugging verification.
Core Technical Specifications
| Parameter Item | Specification |
|---|
| Model Number | LQ121S1LG49 |
| Manufacturer | Sharp Corporation |
| Diagonal Size | 12.1 Inch, 4:3 Landscape |
| Display Technology | a-Si TFT-LCD, TN, Transmissive, Normally White |
| Native Resolution | 800(RGB) × 600 (SVGA), 82 PPI |
| Pixel Arrangement | RGB Vertical Stripe |
| Active Area | 246.0 mm (W) × 184.5 mm (H) |
| Outline Dimension | 276.0 mm (W) × 209.0 mm (H) × 12.5 mm (Thickness) |
| Typical Brightness | 370 cd/m² |
| Contrast Ratio | 450:1 (Typ.) |
| Viewing Angle (CR≥10) | L/R:70°/50°, U/D:60°/70°, Optimum viewing: 6 o’clock |
| Response Time (Tr+Td) | 30 ms (Typ.) |
| Color Depth | 6-bit, 262K Colors |
| Backlight | 2 Straight CCFL Lamps, No built-in inverter, Lifetime: ≥50,000 Hours |
| Signal Interface | Single Channel 6-bit LVDS |
| Supply Voltage | VDD = 3.3 V (Typ.) |
| Refresh Rate | 60 Hz |
| Surface Treatment | Anti-Glare Matte, 3H Hard Coating |
| Operating Temperature | -10°C ~ +65°C |
| Storage Temperature | -30°C ~ +70°C |
| Touch Function | Bare panel without touch; resistive/capacitive touch overlay optional |
| Net Weight | ≤660 g |
| Production Status | End of Life (EOL), Aftermarket replacement stock available |
| RoHS | RoHS Compliant |
Key Advantages
Industrial TN Stable Display Technology: Mature Sharp industrial display solution, long-term verified in automation equipment.
370 cd/m² Medium High Brightness: Good visibility under factory indoor lighting environment.
Matte Anti-Glare Polarizer: Effectively suppress ambient light reflection, reduce visual fatigue during long-time operation.
Support U/D & L/R Image Reverse: Flexible installation orientation for embedded cabinet design.
Dual CCFL Backlight Structure: Replaceable lamp design, convenient for later maintenance.
Standard 12.1-inch 4:3 Mechanical Outline: Preferred replacement for many discontinued imported industrial control panels
.
Application Scenarios
Industrial HMI Touch Panel Repair & Replacement
CNC Machine, PLC Operator Control Terminals
Injection Molding Machinery, Printing Equipment Display Panels
Legacy Imported Factory Automation Equipment Retrofit
Medical Auxiliary Monitoring Display Equipment
Portable Industrial Test & Measurement Instruments
Embedded Industrial Monitor Assembly
Frequently Asked Questions (FAQ)
Q1: Is LQ121S1LG49 genuine original Sharp LCD panel?A1: Yes. LQ121S1LG49 is original mass-produced TFT-LCD module of Sharp. This model is EOL. We supply Grade A fully tested panels complying with official datasheet specifications. Q2: What interface does this panel adopt? Can eDP driver boards drive it?A2: It uses single channel 6-bit LVDS interface. It cannot be driven directly by eDP control boards; matched LVDS driver board is required. Q3: Does this screen need an external inverter? Can modify to LED backlight?A3: Yes, external CCFL inverter is mandatory. CCFL cannot directly plug and play with LED; professional hardware modification is required. Q4: Can LQ121S1LG49 interchange with LQ121S1LG41 / LG73 variants?A4: Same resolution and diagonal size, but FPC pin definition, mechanical border and timing parameters differ. Direct replacement without physical comparison and timing debugging is not recommended. Q5: Matte or glossy surface?A5: Standard version is anti-glare matte surface with 3H hard coating; glossy variant is unavailable. Q6: Is it suitable for 7×24 hours continuous industrial operation?A6: Designed for industrial continuous usage. Control operating temperature within -5~60°C to extend CCFL service life. 
