Tags & Keywords
#TFT-LCD #LVDS #12.1inch #1280x800 #WXGA #16.7MColors #TouchScreen #IndustrialMonitor #MedicalDisplay #EmbeddedSystem #RoHS #LESSON #SmartDisplay
Introduction
This document is the official product specification for the LSC121I04-L-V1, a 12.1-inch color active matrix TFT LCD module developed by LESSON Smart Display Technology Co., Ltd. Featuring a resolution of 1280(RGB)×800 (WXGA), 16.7 million colors, and an integrated capacitive touch panel, this module is designed for larger interactive applications. With its standard LVDS interface for display and I2C for touch, it serves as a complete solution for industrial monitors, medical displays, kiosks, interactive digital signage, and any application requiring a mid-sized touch screen.
Key Specifications
- Brand & Model: LESSON Smart Display LSC121I04-L-V1
- Screen Size: 12.1 inches (diagonal)
- Active Area: 261.12 mm (H) × 163.20 mm (V)
- Driver IC: GT911 (Touch IC)
- Display Technology: Color active matrix TFT LCD (a-Si TFT)
- Display Mode: Normally Black
- Module Type: I-touch module (Integrated Touch)
- Display Resolution: 1280(RGB) × 800 pixels
- Display Colors: 16.7M Colors (6-bit + Hi-FRC)
- Module Outline Dimensions: 287.5 mm (H) × 191.0 mm (V) × 8.4 mm (D) (Typ., without FPC)
- Interface:
- Display: LVDS, 40-pin (Single Port)
- Touch: I2C (TP I2C Interface: SCL, SDA, INT, RST, VDD, GND)
- Viewing Direction: 85°/85°/85°/85° (U/D/L/R)
- Supply Voltages & Currents:
- LCD Operating Voltage (VDD): 0V to 3.6V (at connector)
- Backlight Forward Voltage (V_F): 21.6V ~ 26.5V (Typical: 24V)
- Backlight Forward Current (I_F): 240 mA (Typical)
- Environmental Ratings:
- Operating Temperature: -20°C to +70°C, ≤90% RH @40°C
- Storage Temperature: -30°C to +80°C, ≤90% RH @40°C
- Optical Characteristics (Typical @ Center):
- Luminance: 450 cd/m²
- Contrast Ratio: 1200:1
- Color Gamut: 72% NTSC
- Response Time: 30 ms
- Backlight Unit: Detailed specs including PWM dimming support (200Hz-20KHz).
- LVDS AC Specification: Defines input frequency range (20-85MHz) and channel skew.
- Touch Structure: G+G (Glass+Glass), cover glass surface hardness ≥6H.
- Environmental Compliance: RoHS Compliant, Halogen-Free.
General Description
The LSC121I04-L-V1 is a substantial touch display module for larger formats. It uses a standard LVDS interface (40-pin) for video, compatible with many graphics controllers and SBCs. The capacitive touch is handled by the common GT911 IC via a separate I2C interface. The specification provides comprehensive optical performance data, detailed backlight electrical characteristics (important for driver design), and AC timing for the LVDS link. The touch panel structure is explicitly defined.
Key Features
- Large Touch Screen: 12.1-inch size for comfortable interaction.
- Standard LVDS + I2C: Easy integration with common hardware.
- Detailed Backlight Specs: Includes dimming parameters.
- High Brightness: 450 nits for good visibility.
- Defined Touch Structure: G+G with hardness rating.
Application Scenarios
- Industrial Control Panels: Machine operation, process visualization.
- Medical Equipment Displays: Patient monitors, diagnostic devices.
- Interactive Kiosks: Information points, self-service terminals.
- Digital Signage: Interactive advertising or wayfinding.
- Test & Measurement Racks: As a control and display unit.
Conclusion
The LESSON Smart Display LSC121I04-L-V1 is a robust and fully-featured large touch screen module. Its combination of a reliable LVDS display, GT911 touch controller, and thorough electrical/optical specifications makes it an excellent choice for building professional-grade interactive systems that require a screen larger than typical portable sizes.
