LM12S471 is a sub-version of Sharp LM12S47 series 12.1-inch SVGA color SA-FSTN LCD module, upgraded with Sharp exclusive SA addressing technology to reduce image trailing and ghosting compared to older LM12S40 series CSTN panels. It was widely pre-installed on vintage injection molding machines, small CNC controllers, textile printing machinery and old PLC HMI terminals for static industrial data display.
Adopting Normally Black super-twisted liquid crystal, it stably renders text, numerical parameters, production curves and simple color operation interfaces for 24/7 continuous indoor constant-temperature workshop operation. Equipped with standard 41-pin 8-bit parallel TTL RGB bus at 5V logic voltage, it is fully compatible with early single-chip industrial control boards without LVDS output, eliminating extra signal conversion boards during screen replacement.
| Parameter | Specification |
|---|
| Model Number | LM12S471 |
| Manufacturer | Sharp Corporation (Japan) |
| Screen Size | 12.1 inches |
| Native Resolution | 800(RGB) × 600 SVGA, 4:3, 82 PPI |
| LCD Type | Color SA-FSTN Transmissive, Normally Black |
| Color Depth | 4096 colors (12-bit RGB) |
| Interface | 8-bit Parallel TTL RGB, 41Pin Connector, 5V Logic |
| Backlight | Single side single CCFL, no onboard driver, external single-channel CCFL inverter required, 25,000hrs lifespan |
| Typical Brightness | 100 cd/m² |
| Contrast Ratio | 40:1 |
| Total Response Time | 150ms typical (SA anti-shadow technology) |
| Pixel Pitch | 0.3075 × 0.3075 mm |
| Active Area (AA) | 246.0(W) × 184.5(H) mm |
| Overall Outline | 275.0(W) × 202.5(H) × 8.3(D) mm |
| Net Weight | 500g |
| Surface | Standard matte anti-glare polarizer, no hard scratch coating |
| Operating Temp | 0 ℃ ~ +40 ℃ |
| Storage Temp | -25 ℃ ~ +60 ℃ |
| Touch Screen | Not integrated |
| Certification | RoHS compliant, CCFL mercury warning |
| Product Status | Discontinued legacy industrial CSTN module, only tested A-grade spot stock for equipment maintenance replacement |
Main Application Fields
Auxiliary HMI display panels for injection molding, blow molding and plastic machinery
Old small CNC machine operator control terminals
Textile, printing and packaging equipment operation screens
Portable industrial testing, measuring and analytical instruments
Static parameter monitoring screens inside frequency converter and hydraulic cabinets
Local display terminals for environmental monitoring and power distribution cabinets
Replacement spare screen for all Sharp LM12S47 series 12.1-inch color FSTN modules
Compact embedded PLC terminals for static text, bar charts and curve display
FAQ
Q1: Does LM12S471 require an external inverter for backlight?
A1: Yes. It uses single-side single CCFL without built-in drive circuit; a matched single-channel CCFL inverter is mandatory. Dual-lamp inverters or WLED drivers cannot be used directly.
Q2: What is the advantage of SA-FSTN technology?
A2: Sharp SA special addressing technology shortens response time and effectively reduces image shadow/trailing when switching data pages, improving readability compared to ordinary CSTN.
Q3: Can LM12S471 replace LM12S47 directly?
A3: Yes, fully consistent outline dimensions, mounting holes and 41Pin TTL pin definition. Only confirm the single-channel CCFL inverter matches, no mechanical modification needed.
Q4: What working temperature range does this panel support?
A4: Operating temperature is restricted to 0~40℃, storage -25~60℃. It cannot run stably in unheated cold workshops or high-temperature mechanical cabinets beyond this range, not wide-temperature industrial grade.
Q5: What are the shortcomings of FSTN compared with modern TFT LCD?
A5: Slow response speed, narrow vertical viewing angle, low brightness (100 cd/m²), only 4096 limited colors. Not suitable for fast dynamic images, machine vision and high-precision grayscale display; only applicable to static parameter monitoring scenes.
