LG LB121S1-A2 is a classic 12.1-inch SVGA TFT LCD integrated module widely equipped on vintage industrial automation, injection molding machines, small CNC controllers and embedded industrial all-in-one devices. Adopting standard 4:3 800×600 SVGA resolution, it perfectly matches legacy industrial control software, PLC operation interfaces and process monitoring systems incompatible with widescreen 16:10/16:9 panels.
| Parameter | Specification |
|---|---|
| Model Number | LB121S1-A2 |
| Manufacturer | LG Display (LG.Philips LCD, Korea) |
| Diagonal Size | 12.1 inches |
| Native Resolution | 800(RGB) × 600 SVGA, 4:3 Aspect Ratio, 82 PPI |
| Display Technology | a-Si TFT-LCD, TN Mode, Transmissive, Normally White |
| Pixel Arrangement | RGB Vertical Stripe |
| Signal Interface | Single-channel 6-bit Parallel TTL RGB, 41-pin connector, 3.3V logic voltage |
| Backlight System | Dual edge CCFL lamps, external dedicated CCFL inverter required, 50,000 hrs typical lifespan |
| Typical Brightness | 300 cd/m² |
| Typical Contrast Ratio | 200:1 |
| Viewing Angle (L/R/U/D, CR≥10) | 60° / 60° / 40° / 55° (6 o’clock viewing direction) |
| Color Performance | 262K display colors, 42% NTSC gamut, native 6-bit RGB |
| Response Time (Tr / Td) | 20 ms / 35 ms typical |
| Refresh Rate | 60 Hz |
| Pixel Pitch | 0.3075 × 0.3075 mm |
| Active Display Area (A.A) | 246.0 mm (W) × 184.5 mm (H) |
| Overall Outline Dimension | 280.0 mm (W) × 218.0 mm (H) × 12.5 mm (D) |
| Bezel Cutout Size | 249.0 mm (W) × 187.5 mm (H) |
| Surface Treatment | Matte anti-glare polarizer, 3H hard scratch-resistant coating |
| Net Weight | ~1.0 kg typical |
| Operating Temperature Range | 0 ℃ ~ +50 ℃ |
| Storage Temperature Range | -20 ℃ ~ +60 ℃ |
| Touch Function | No integrated touch panel |
| Compliance Standard | RoHS Lead-Free Certified, UL certified |
| Product Status | Discontinued legacy industrial TFT module, A-grade original spot stock for equipment repair & cross-replacement |
Legacy injection molding, blow molding & plastic machinery HMI operation panels
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Factory PLC automation production line monitoring screens
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Textile, printing & packaging machinery control terminals
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Cross-replacement spare screen for LB121S1 series 12.1" TTL industrial TFT modules
Compact embedded industrial all-in-one control machines










