LSC215I04-L-V1 21.5 inch TFT-LCD Module 1920x1080 FHD 500 nits High Contrast
1. Executive Summary & Product Positioning
The LSC215I04-L-V1 is a 21.5-inch color active matrix TFT-LCD module developed by 立信(万安)智显科技有限公司 (Lesson Smart Display Technology Co., Ltd). It uses amorphous silicon TFT (Thin Film Transistors) as switching devices. This module has a 21.5 inch diagonally measured active area with full HD (1920 x 1080) resolution. The TFT-LCD panel is designed for a low reflection and higher color reproduction and supports 16.7M colors.
Product Positioning: This module features a high contrast ratio of 3000:1 and a brightness of 500 nits, making it ideal for clear visibility in various indoor environments. It is specifically marketed for use in monitors for process controllers, desktop PCs, and other application requiring high quality display.
2. Detailed Product Overview & Architecture
The module's architecture is designed for high performance and easy integration. The primary components include:
- TFT-LCD Panel: 21.5-inch diagonal, a-Si TFT active matrix. Resolution is 1920(H) × 1080(V) pixels with an active area of 478.656(H) × 260.28(V) mm.
- Technology: HADs technology is applied for high display quality.
- Interface: The module uses a LVDS (Low-Voltage Differential Signaling) interface. The timing controller has integrated LVDS Rx and Mini-LVDS Tx. The interface supports DE (Data Enable) only mode.
- Display Mode: Normally Black.
- Backlight Unit: Down edge side 1-LED Light bar type.
- Mechanical Construction: The dimensional outline is 495.6(H) × 292.2(V) × 9.5(D) mm (typ), without PCB.
3. Exhaustive Technical Specifications
3.1 General & Mechanical Specifications
| Item | Specification |
| Display Size (Diagonal) | 21.5 inches |
| Resolution (Pixels) | 1920(H) × 1080(V) (FHD) |
| Display Technology | Active Matrix TFT, a-Si, HADs |
| Color Depth | 16.7M Colors |
| Input Data Interface | LVDS 2 Ports, DE only |
| Dimensional Outline (H×V×D) | 495.6 × 292.2 × 9.5 mm (typ) |
| Active Area (H×V) | 478.656 × 260.28 mm |
| Pixel Pitch (H×V) | 0.08275 × 0.24825 mm |
| Pixel Arrangement | RGB Vertical Stripe |
| Display Mode | Normally Black |
| Weight | TBD (refer to drawing) |
| Backlight Type | Down edge side 1-LED Light bar |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | -20°C to +60°C |
3.2 Absolute Maximum Ratings
Stress beyond those listed may cause permanent damage.
| Parameter | Symbol | Min | Max | Unit | Remarks |
|---|---|---|---|---|---|
| Power Supply Voltage | VDD | -0.3 | 6.0 | V | Ta = 25 °C |
| Logic Supply Voltage | VIN | -0.3 | 3.6 | V | Ta = 25 °C |
| Operating Temperature | TOP | 0 | +50 | °C | 1) |
| Storage Temperature | TST | -20 | 60 | °C | 1) |
Note 1: Wet bulb temperature should be 39 °C max. and no condensation of water.
3.3 Electrical Characteristics (Ta=25±2°C)
3.3.1 Recommended Operating Conditions
| Parameter | Symbol | Min | Typ | Max | Unit | Remarks |
|---|---|---|---|---|---|---|
| Power Supply Voltage | VDD | 4.5 | 5.0 | 5.5 | V | |
| Power Supply Current (White Pattern) | ICC | - | 0.72 | 0.94 | A | |
| Power Supply Current (Horizontal Stripe) | ICC | - | 0.92 | 1.2 | A | |
| Power Supply Current (Black Pattern) | ICC | - | 0.72 | 0.94 | A | |
| Power Consumption | PDD | - | 3.6 | 4.68 | W | |
| In-Rush Current | IRUSH | - | - | 4.0 | A | Note 3-1 |
3.3.2 Backlight LED Characteristics
The LED backlight circuit is a down edge side 1-LED Light bar type.
| Parameter | Symbol | Min | Typ | Max | Unit | Remarks |
|---|---|---|---|---|---|---|
| LED Light Bar Input Voltage Per Input Pin | VPIN | 50.4 | 54 | 59.4 | V | Duty 100% |
| LED Light Bar Input Current Per Input Pin | IPIN | - | 60 | - | mA | Note 1,2 |
| LED Power Consumption | PBL | - | 12.96 | 14.26 | W | Note 3 |
| LED Life-Time | - | 30000 | - | - | Hrs | Note 4 |
3.4 Optical Specification (Ta=25±2°C)
Test conditions: VDD = 5.0V, Frame rate = 60Hz, Dark room (1 lux), Equipment: TOPCONE PR730, Distance: 50cm.
| Parameter | Symbol | Condition | Min | Typ | Max | Unit | Remark |
|---|---|---|---|---|---|---|---|
| Viewing Angle (Horizontal) | θ3, θ9 | CR > 10 | 80 | 89 | - | Deg. | Note 1 |
| Viewing Angle (Vertical) | θ12, θ6 | CR > 10 | 80 | 89 | - | Deg. | Note 1 |
| Contrast Ratio | CR | θ=0 deg. | 2000 | 3000 | - | - | Note 2 |
| Luminance of White | Yw | θ=0 deg. | 230 | 250 | - | cd/m² | Note 3 |
| Luminance Uniformity | ΔY | θ=0 deg. | 75% | - | - | % | Note 4 |
| Response Time (GtG) | GTG | Tg | - | 7.0 | 12 | msec | Note 6 |
Color Reproduction (CIE1931) White (Typ.): Wx=0.313, Wy=0.329; Red (Typ.): Rx=0.650, Ry=0.339; Green (Typ.): Gx=0.322, Gy=0.623; Blue (Typ.): Bx=0.148, By=0.052.
3.5 Interface Pin Assignment (30-Pin Connector CN1)
Connector: 3-10122314-0 (XDYT) or equivalent 1mm pitch 30 pin.
| Pin No. | Symbol | Function |
|---|---|---|
| 1 | ORXON | LVDS Data1(0) - |
| 2 | ORXOP | LVDS Data1(0) + |
| 3 | ORXIN | LVDS Data1(1) - |
| 4 | ORXIP | LVDS Data1(1) + |
3.6 Design Notes from Documentation
- DE only mode: The module operates in DE (Data Enable) only mode. H sync and V sync input signals have no effect on normal operation.
- Clock Requirement: The range of pixel clock must follow specific equations: Fclkin(max) ≥ Fmax × Tv × TH and Fmin × Tv × TH ≥ Fclkin(min).
- Spread Spectrum: The LVDS Spread Spectrum Clock Generator (SSCG) is suggested to be off by default. The SOC board must test all validation if opening LVDS SSM.
- Backlight: The LED Light Bar uses a PH2.0-2PIN connector with a 450mm line length.
- Touch Panel Grounding: The touch panel controller must be effectively grounded to function normally. The controller board must be fixed on the LCM bezel or other mechanical parts and grounded.
4. Application Guidelines & Critical Notes
- Power Supply: The module requires a 5.0V (Typ.) power supply with a tolerance of +/- 10%. The maximum power consumption is 4.68W.
- Interface: The module uses standard LVDS 2 Ports interface. Ensure the host controller is configured for DE only mode.
- Backlight Driver (External): An external constant current driver capable of providing 60mA per input pin at a typical voltage of 54V is required. The total LED power consumption is up to 14.26W.
- Handling Precautions: Handle the module with care to avoid damage. Ensure proper grounding (ESD protection) during installation. All environmental characteristics should be less than 1 atmosphere.
- Storage: Store within -20°C to +60°C, with a wet bulb temperature of 39°C max and no condensation.
5. Conclusion & Design-In Support
The LSC215I04-L-V1 from Lesson Smart Display Technology is a 21.5-inch TFT-LCD module with a high contrast ratio of 3000:1 and FHD resolution. It is designed for professional use, particularly in process controllers, industrial monitors, and desktop displays requiring high image quality.
For successful design-in, engineers should:
- Obtain and review the complete, official Product Specification (Revision 1.0) for the full mechanical drawing and detailed LVDS timing diagrams.
- Design a suitable 5.0V power supply capable of handling the in-rush current (4.0A max) and peak current (1.2A).
- Design a robust backlight constant current driver capable of delivering 60mA per pin at up to 59.4V.
- Contact the manufacturer for evaluation modules, sample requests, and further technical support during the design-in phase.
This module provides a reliable and high-performance display solution for demanding industrial applications.
