LSL215I01-L-V1 | 21.5 inch TFT-LCD Module | 1920x1080 (FHD) | LVDS | VA | Anti-Glare
1. Executive Summary & Product Positioning
The LSL215I01-L-V1 is a 21.5-inch wide color a-Si TFT-LCD module developed by 立信(万安)智显科技有限公司 (Lesson Smart Display Technology Co., Ltd). It features a Full HD (1920×1080) resolution and supports 16.7 million colors through 8-bit RGB data input. The module utilizes a VA (Vertical Alignment) mode, which is normally black for high contrast performance, and incorporates an Anti-Glare surface treatment for improved outdoor readability.
Product Positioning: Designed for a wide range of fixed-installation and monitor-type applications. Its large 21.5-inch diagonal, high FHD resolution, wide viewing angle (VA), and high contrast ratio make it an excellent choice for desktop monitors, industrial HMI (Human-Machine Interface) panels, digital signage, and kiosk applications.
2. Detailed Product Overview & Architecture
The module includes a TFT-LCD panel, a driver circuit, and a backlight unit. The primary components and features include:
- TFT-LCD Panel: 21.5-inch (546.86mm) diagonal, a-Si TFT active matrix, transmissive, VA (Normally Black) display mode. Resolution is 1920(H) × 1080(V) pixels with a pixel pitch of 0.24825 mm.
- Color Depth: Supports 16.7M colors (8-bit) via RGB data input.
- Interface: The module uses a Dual Channel LVDS interface, operating at 8 bits per color. The connector type used is AL230F-A0G1D-P or MSCKT2407P30HB (mating with FI-X30HL).
- Backlight Unit (B/L): An LED backlight with a typical input current of 65mA per string at 56.0V. The total backlight power consumption is typically 13.44W.
- Surface Treatment: The panel features an Anti-Glare coating with a hardness of 3H.
- Electrical Interface: Supports a 30-pin connector.
3. Exhaustive Technical Specifications
3.1 General & Mechanical Specifications (Ta=25°C)
| Item | Specification |
| Display Size (Diagonal) | 21.5 inches (546.86 mm) |
| Active Area (H×V) | 476.64 (H) × 268.11 (V) mm |
| Resolution (Pixels) | 1920 (x3) × 1080 (FHD) |
| Pixel Pitch | 0.24825 (H) × 0.24825 (V) mm |
| Pixel Arrangement | R.G.B. Vertical Stripe |
| Display Mode | VA Mode, Normally Black |
| Response Time (Typ., on/off) | 18 ms |
| Power Consumption (Typ., 60Hz) | 3.1 W (VDD) + 13.44W (B/L) = 16.54 W |
| Weight | TBD (To Be Determined) |
| Electrical Interface | Dual channel LVDS, 8 bits RGB |
| Support Color | 16.7M colors |
| Surface Treatment | Anti-Glare, 3H |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | -20°C to +60°C |
| Cell Transmittance (Typ.) | 3.04% |
3.2 Electrical Characteristics
3.2.1 Recommended Operating Conditions (Ta=25°C)
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Power Supply Input Voltage | VDD | 4.5 | 5.0 | 5.5 | V |
| Power Supply Input Current (RMS, 60Hz) | IDD | - | 0.62 | 0.74 | A |
| VDD Power Consumption (60Hz) | PDD | - | 3.1 | 3.7 | W |
| Inrush Current | IRush | - | - | 3.0 | A |
| Allowable VDD Ripple Voltage | VDDrp | - | - | 500 | mV |
3.2.2 Backlight LED Characteristics
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Light Bar Input Voltage | VLED | 52.2 | 56.0 | 59.0 | V |
| Light Bar Input Current (Per string, Duty 100%) | ILED | - | 240 | - | mA |
| Power Consumption (B/L) | PLED | 12.6 | 13.44 | 14.16 | W |
| LED Life Time | LBL | 30,000 | - | - | Hrs |
3.3 Optical Characteristics (Ta=25°C)
Test conditions: VDD=5.0V, Fv=60Hz, Is=65mA, SR-3 measurement after 30min warm-up.
| Item | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Luminance of White | YL | Center, θ=0° | 200 | 250 | 250 | cd/m² |
| Contrast Ratio | CR | Center, θ=0° | 2000 | 3000 | - | - |
| Viewing Angle (CR>10) | θL, θR, ΦH, ΦL | Center | 75 (CR=5: 75) | 89 | - | Deg. |
| Response Time (Rising+Falling) | TR+TF | θ=0° | - | 18 | 36 | ms |
| Flicker (Center of screen) | FdB | Center | - | - | -20 | dB |
| Crosstalk | CT | Center | - | - | 2.0 | % |
3.3.1 Color Coordinates (CIE 1931)
| Color | Symbol | Min | Typ | Max |
|---|---|---|---|---|
| Red | Rx, Ry | (0.622, 0.305) | (0.652, 0.335) | (0.682, 0.365) |
| Green | Gx, Gy | (0.291, 0.595) | (0.321, 0.625) | (0.351, 0.655) |
| Blue | Bx, By | (0.123, 0.037) | (0.153, 0.067) | (0.183, 0.097) |
| White | Wx, Wy | (0.285, 0.298) | (0.305, 0.318) | (0.335, 0.348) |
3.4 Interface Pin Assignment (30-Pin Connector)
The module uses a 30-pin connector. The pinout integrates the Dual Channel LVDS interface and power supply.
| Pin # | Symbol | Description |
|---|---|---|
| 1 | Rx00- | Negative LVDS differential data input (Odd data) |
| 2 | Rx00+ | Positive LVDS differential data input (Odd data) |
| 3 | Rx01- | Negative LVDS differential data input (Odd data) |
| 4 | Rx01+ | Positive LVDS differential data input (Odd data) |
| 5 | Rx02- | Negative LVDS differential data input (Odd data) |
| 6 | Rx02+ | Positive LVDS differential data input (Odd data) |
| 7 | GND | Ground |
| 8 | RxOCLK- | Negative LVDS differential clock input (Odd clock) |
| 9 | RxOCLK+ | Positive LVDS differential clock input (Odd clock) |
| 10 | RxO3- | Negative LVDS differential data input (Odd data) |
| 11 | RxO3+ | Positive LVDS differential data input (Odd data) |
| 12 | RxE0- | Negative LVDS differential data input (Even data) |
| 13 | RxE0+ | Positive LVDS differential data input (Even data) |
| 14 | GND | Ground |
| 15 | RxE1- | Negative LVDS differential data input (Even data) |
| 16 | RxE1+ | Positive LVDS differential data input (Even data) |
| 17 | GND | Ground |
| 18 | RxE2- | Negative LVDS differential data input (Even data) |
| 19 | RxE2+ | Positive LVDS differential data input (Even data) |
| 20 | RxECLK- | Negative LVDS differential clock input (Even clock) |
| 21 | RxECLK+ | Positive LVDS differential clock input (Even clock) |
| 22 | RxE3- | Negative LVDS differential data input (Even data) |
| 23 | RxE3+ | Positive LVDS differential data input (Even data) |
| 24 | GND | Ground |
| 25-26 | NC | No connection (for AUO test only. Do not connect) |
| 27-30 | NC | No connection |
4. Application Guidelines & Critical Notes
When integrating the LSL215I01-L-V1 module, engineers must adhere to the specific guidelines outlined in the specification to ensure optimal performance and reliability.
- Power Supply: The module requires a 5.0V (Typ.) power supply. The VDD power, LVDS signals, and backlight must follow the specified Power ON/OFF Sequence to avoid damage. Ensure the power supply ripple is kept below 500mV.
- Dual Channel LVDS Interface: This is a dual channel LVDS interface (Odd/Even data). The host must be compatible with 8-bit dual channel LVDS output. Pay attention to the correct routing of differential pairs (RxO, RxE) and respective clock signals (RxOCLK, RxECLK).
- Backlight Driver (External): The module has a dedicated LED light bar connector (PH2.0 2-pin). An external constant current driver is required, set to the typical current of 240mA per string, with a typical voltage of 56V.
- Mechanical Integration: The module outline dimensions are provided in the mechanical drawing. It includes mounting holes (M3 screw) and specific locations for bezel openings.
- Handling Precautions (Critical): The module uses a glass panel and polarizer. Pay special attention to:
- Do not scratch the front polarizer.
- Wipe off water drops immediately to prevent discoloration.
- Handle with care; the glass can break or crack if dropped.
- Ground yourself to avoid static discharge damage to CMOS LSIs.
- Do not press or pat the panel surface with fingers, hand, or tool.
- Do not rotate or tilt the connector when inserting or removing it.
- Avoid touching the COF (Chip on Film) position during mechanical design.
- Storage: For long-term storage, keep the module in a dark place at temperatures between 5°C and 35°C at normal humidity.
- Environmental Conditions: Operating temperature range is 0°C to +50°C. Exceeding these limits with high humidity (typ. 90% RH max) can cause permanent damage.
5. Conclusion & Design-In Support
The LSL215I01-L-V1 from Lesson Smart Display Technology is a robust and high-performance 21.5-inch TFT-LCD module. Its combination of FHD resolution, high contrast ratio (3000:1 Typ.), wide viewing angle (VA), and standard Dual Channel LVDS interface makes it a solid choice for various industrial and commercial monitor applications.
For design-in support, it is strongly recommended to:
- Obtain and review the full Product Specification (Version 1.0) for the complete set of electrical parameters, interface timing diagrams, and mechanical drawings.
- Design the power supply to provide a clean 5.0V rail (VDD) and a constant current backlight driver (~240mA at ~56V) capable of supporting PWM dimming (if required).
- Develop firmware/software using the standard Dual Channel LVDS protocol.
- Contact the manufacturer for evaluation kits, sample requests, and technical support during the design-in phase.
This module is engineered to deliver reliable, clear, and vibrant display performance for high-end electronic products.
