LSC055I21-MP-V1: 5.5-inch TFT LCD Module, 1080×1920, MIPI Interface, 16.7M Colors, Transmissive IPS
Product Subtitle / Keywords
5.5 Inch Display, 1080(RGB)×1920 Resolution (FHD), Transmissive a-Si TFT-LCD Module, COG+FPC+B/L+CTP Module Type, MIPI DSI 4-Lane Interface, 16.7M Colors (24-bit), IPS Display Mode (ALL View), Module Size: 79.93 × 140.77 × 3.14 mm, Active Area: 68.04 × 120.96 mm, Operating Temp: -10°C ~ +60°C, Storage Temp: -20°C ~ +70°C, Backlight: 12 Chip-White LED (Parallel), Vf=21-22.4V, If=40mA, Module Luminance: TBD, Contrast Ratio: TBD, with Capacitive Touch Panel (CTP, IC: GT911 (Multi-Touch)), G+G Structure, Cover Glass Hardness >6H, RoHS Compliant, Product Revision 1.0 (Released on 2026-06-05)
1. Executive Summary And Product Positioning
The LSC055I21-MP-V1 is a 5.5-inch diagonal transmissive type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module, manufactured by Lesson (Wanan) Smart Display Technology Co., Ltd. This comprehensive module is a complete, ready-to-use visual and touch interface solution, integrating a TFT-LCD panel, a driver circuit, a backlight unit (B/L), and a capacitive touch panel (CTP) into a compact and robust package. The product specification (Revision 1.0, released on 2026-06-05) serves as the definitive technical document for this module.
This module is characterized by its Full HD resolution in the popular 5.5-inch form factor. It features a resolution of 1080(RGB)×1920 pixels and is capable of displaying up to 16.7M colors, which corresponds to 24-bit color depth (8-bit per primary color Red, Green, Blue). This ensures exceptional image clarity, smooth color gradients, and detailed imagery suitable for the most advanced graphical user interfaces. The inclusion of a CTP (Capacitive Touch Panel) with the GT911 (Multi-Touch) controller IC provides a responsive and modern touch input solution, eliminating the need for a separate touch sensor.
The unequivocal recommendation for engineers is to strictly adhere to the absolute maximum ratings, electrical specifications, and interface timing described herein to ensure reliable performance and compatibility within the intended application. Failure to operate within these limits can lead to permanent damage, degraded optical performance, or reduced product lifespan. The manufacturer has provided comprehensive mechanical design recommendations for the chassis lens, foam, and CTP integration.
2. Detailed Product Overview And Architecture
The LSC055I21-MP-V1 is engineered for devices that demand a high-resolution, vivid display with a modern touch interface, such as high-end portable instruments, smart home hubs, and sophisticated IoT terminals. Its architecture is built around several key technologies and design choices:
- Core Technology: Transmissive type a-Si TFT-LCD with IPS (In-Plane Switching) display mode, with a viewing direction of ALL O'CLOCK. This technology offers superior color reproduction and exceptionally wide viewing angles. As a transmissive display, it requires a backlight to be visible. The module has a plane warpage specification of ≤0.3mm.
- Module Type: COG (Chip-On-Glass) + FPC (Flexible Printed Circuit) + B/L (Backlight) + CTP (Capacitive Touch Panel). The driver IC is directly mounted onto the LCD glass (COG), minimizing size and interconnect complexity. The FPC provides a flexible connection to the host system. The CTP provides native touch input capability.
- Display Format: Graphic 1080(RGB)×1920 Dot-matrix (Full HD). This resolution provides exceptionally sharp imagery, ideal for displaying detailed graphics, high-quality video, and complex data. The RGB stripe arrangement provides full color mixing for each pixel. The module outline dimensions are 79.93 (H) × 140.77 (V) × 3.14 (D) mm, with an active area of 68.04 (H) × 120.96 (V) mm.
- Display Characteristics: Capable of displaying up to 16.7M colors. This refers to 8-bit color depth per primary color (R, G, B), allowing the module to generate 16,777,216 distinct colors for the most realistic and smooth color reproduction.
- Interface Type: The module utilizes a MIPI-DSI (Mobile Industry Processor Interface - Display Serial Interface) for high-speed data transfer. The pinout includes four data lanes (D0P/D0N, D1P/D1N, D2P/D2N, D3P/D3N) and one clock lane (CP/CN), standard for high-resolution displays. The interface uses differential signaling for noise immunity.
- Main LCD Driver IC: OTM1911A
- Backlight Unit: The module utilizes a white LED backlight comprised of 12 chips connected in parallel (并联，背光电路图示意). The specified driving condition is IF=40mA (Total) and Vf=21-22.4V. The LEDs are driven in parallel, with a typical forward voltage of 21-22.4V at 40mA. The LED lifetime is defined as the module brightness decreasing to 50% of its original brightness at I_L=20mA.
- Capacitive Touch Panel (CTP): The module includes a CTP with the following characteristics:
- Structure: G+G (Glass + Glass)
- IC Model: GT911 (Multi-Touch)
- Cover Glass Material: Aluminosilicate (填硒子); Surface Hardness >6H
- Transmittance: >83%
- Operating Environment: -20°C to 70°C, 10% to 90% RH
- RoHS Standard: Compliant
- Special Features: Full HD 1080×1920 resolution, 16.7M color capability (8-bit), IPS technology for wide viewing angles (ALL), MIPI 4-Lane interface for high-speed data transfer, integrated capacitive touch panel (GT911 multi-touch), high-hardness cover glass (>6H), compact size (5.5 inch), plane warpage specification ≤0.3mm, and compliant with the RoHS directive. The module includes specific mechanical design rules for integration.
- Manufacturer's Mechanical Recommendations: The specification provides several key recommendations for the customer's chassis design:
- Chassis Lens Opening: The chassis lens window opening should be larger than the LCD Active Area (A.A.) by 0.3mm on each side.
- Chassis Material Opening: The chassis material (backlight) window opening should be larger than the LCD A.A. by 0.6mm on each side.
- Chassis Foam Opening: The chassis foam window opening should be larger than the LCD A.A. by 0.9mm on each side.
- CTP V.A Opening: The CTP Viewing Area (V.A.) window opening should be larger than the LCD A.A. by 0.3mm on each side.
- CTP Foam Opening: The CTP foam window opening should be larger than the LCD A.A. by 0.7mm on each side.
- Approval Status: Approved Product Specification only (Revision 1.0).
3. Exhaustive Technical Specifications
3.1 General & Mechanical Specification
This section provides the physical dimensions and other key general parameters of the module. The module includes a capacitive touch panel (CTP) and is very thin (3.14mm).
| Parameter | Specification | Unit |
|---|---|---|
| Panel Size | 5.5'' (Diagonal) | Inch |
| Module Size (H×V×D) | 79.93 × 140.77 × 3.14 | mm |
| Active Area (H×V) | 68.04 × 120.96 | mm |
| Number of Dots | 1080(RGB) × 1920 | pixels |
| Display Type | Active matrix a-Si TFT, Transmissive, IPS (ALL O'CLOCK) | - |
| Display Colors | 16.7M (24-bit) | colors |
| Module Type | COG+FPC+B/L+CTP | - |
| Main LCD Driver IC | OTM1911A (Standard for MIPI 4-Lane FHD) | - |
| Display Mode | Transmissive, IPS (ALL O'CLOCK) | - |
| View Direction (Best Image) | IPS (ALL O'CLOCK) | - |
| Interface | MIPI-DSI (4 Data Lanes + 1 Clock Lane) | - |
| Touch Panel Type | Capacitive (G+G, GT911 Multi-Touch, I2C Interface) | - |
| Touch Panel Structure | G+G, Cover Glass Hardness >6H, Transmittance >83% | - |
| Backlight Type | White LED (12 chips in parallel, side-lit) | - |
| Plane Warpage | ≤ 0.3 | mm |
| Tolerance of Unmarked Dimensions | ±0.2 | mm |
3.2 Absolute Maximum Ratings
The absolute maximum ratings are stress limits. Operating the module at or beyond these values can result in irreversible damage.
| Item | Min | Max | Unit |
|---|---|---|---|
| Operating temperature | -10 | 60 | °C |
| Storage temperature | -20 | 70 | °C |
3.3 Electrical Characteristics (LCD Interface)
These are the recommended operating conditions for the module. The module requires specific power supply voltages for the logic and analog circuits.
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Power Supply for I/O (Logic) | IOVCC | - | 1.8 | - | V |
| Power Supply for I/O (Analog) | VCI | 2.8 | 3.3 | - | V |
| RESET Input Pin | RST | 1.8V/3.3V Logik | - | - | V |
3.4 Backlight Driving Conditions
The module uses a white LED backlight comprised of 12 chips configured in parallel. The driving condition is: IF=40mA, Vf=21-22.4V (Typ.). A constant current source is strongly recommended for driving the backlight to ensure consistent brightness and longevity. The LED lifetime (brightness decreasing to 50% of original) is defined at I_L=20mA, and will decrease if operating I_L is larger than 20mA.
| Parameter | Symbol | Min | Typ | Max | Unit | Condition |
|---|---|---|---|---|---|---|
| Forward Voltage | VF | 21 | - | 22.4 | V | IF=40mA |
| Forward Current (Total) | IF | - | 40 | - | mA | - |
3.5 Interface Connection (31-Pin FPC + CTP)
The module uses a 31-pin FPC connector for the LCD interface and a separate connector for the CTP (not detailed in the fragment, but standard I2C). The LCD interface includes power (IOVCC, VCI, GND), MIPI data and clock lanes (D0P/D0N, D1P/D1N, D2P/D2N, D3P/D3N, CP/CN), control signals (RST), and backlight power (A, K). Note that pins 4 and 26 are NC (Not Connected).
| Pin No. | Symbol | I/O | Description |
|---|---|---|---|
| 1, 2, 3 | A | P | Backlight Anode |
| 4 | NC | - | Not Connected |
| 5, 6, 7, 8 | K | P | Backlight Cathode |
| 9, 10, 13, 16, 19, 22, 25, 28 | GND | P | Power Ground |
| 11 | D2P | I | MIPI-DSI Data Lane 2 (Positive) |
| 12 | D2N | I | MIPI-DSI Data Lane 2 (Negative) |
| 14 | D1P | I | MIPI-DSI Data Lane 1 (Positive) |
| 15 | D1N | I | MIPI-DSI Data Lane 1 (Negative) |
| 17 | CP | I | MIPI-DSI Clock Lane (Positive) |
| 18 | CN | I | MIPI-DSI Clock Lane (Negative) |
| 20 | D0P | I | MIPI-DSI Data Lane 0 (Positive) |
| 21 | D0N | I | MIPI-DSI Data Lane 0 (Negative) |
| 23 | D3P | I | MIPI-DSI Data Lane 3 (Positive) |
| 24 | D3N | I | MIPI-DSI Data Lane 3 (Negative) |
| 26 | NC | - | Not Connected |
| 27 | RST | I | Reset Input Pin |
| 29 | IOVCC | P | Power Supply for I/O Block (1.8V) |
| 30, 31 | VCI | P | Power Supply for I/O Block (2.8-3.3V) |
3.6 Reset Timing Characteristics
The module requires a specific reset timing for proper initialization. The RESX signal must be held low for at least the specified time.
| Parameter | Symbol | Min | Unit |
|---|---|---|---|
| Reset low-level pulse width | tRESW | < 5 | us |
| Reset cancel time | tREST | - | - |
The specification shows that the reset pulse (RESX low) should be shorter than 5 µs (tRESW), and after this, the internal status will transition from resetting to normal operation (initial condition).
3.7 Optical Specifications (Inferred from Standard Similar Modules)
The electro-optical characteristics of the module are measured under standard laboratory conditions. While specific values for this exact model are not fully detailed in the provided fragment, the module is typical of a high-quality FHD IPS display.
Typical Performance (Expected): Luminance: 400-600 cd/m², Contrast Ratio: 1000:1 or higher, Response Time: 25-30ms, Viewing Angle: 80° (Typ.) in all directions for CR>10.
4. Application Scenario
The LSC055I21-MP-V1 is a premium, high-performance display module with an integrated multi-touch capacitive touch panel, making it an ideal choice for any embedded system that requires a brilliant, high-resolution visual output and a responsive touch interface. Its 5.5-inch diagonal size with Full HD (1080×1920) resolution provides an exceptionally sharp and detailed image for rich graphical content, video playback, and complex data visualization. The 16.7M color capability ensures the most realistic and visually appealing user interface possible with an LCD. The integrated CTP (GT911) provides reliable multi-touch input, simplifying system design.
Key application areas are numerous and diverse:
- High-End Industrial HMIs: Control panels for complex machinery, factory automation, and process control systems where high resolution and touch input are required.
- Medical Equipment: Patient monitors, diagnostic imaging devices, and surgical control panels where high image quality is critical.
- Smart Home Hubs: Central control panels for home automation, security systems, and intercoms requiring a premium display.
- Portable Test & Measurement Instruments: High-end multimeters, oscilloscopes, and spectrum analyzers needing a high-resolution, interactive display.
- IoT Edge Terminals: Advanced data loggers, environmental monitors, and smart agriculture display nodes requiring a high-quality user interface.
The module's MIPI 4-Lane interface is standard for modern high-performance application processors. The IPS technology ensures excellent image consistency from any angle. The manufacturer's specific mechanical recommendations for chassis lens, foam, and CTP integration are critical for successful product design. The dust-proofing measures (双面背胶密封) are also important for maintaining the display's integrity in harsh environments.
5. Handling Precautions And Compliance
The LCD panel is made of glass and is fragile. The polarizer surface is easily scratched. The module should be handled with care to avoid applying pressure on the display area, especially the back of the LCD. ESD (Electrostatic Discharge) protection is mandatory throughout handling, assembly, and testing. Use grounded wrist straps, conductive work surfaces, and anti-static packaging. The FPC is also delicate; avoid sharp bends at the connector interface.
Important: The module includes a capacitive touch panel (G+G structure) with an aluminosilicate cover glass (surface hardness >6H). The touch panel surface should not be scratched or subjected to sharp impact. The TP edge should not contact any metal conductor to prevent false touches or electrical shorts.
The module should be stored in a clean, dry environment away from direct sunlight, high temperatures, and corrosive gases. The recommended storage temperature is -20°C to 70°C. It is strongly recommended to read the full specification document (LSC055I21-MP-V1 Product Specification Revision 1.0, released 2026-06-05) before integration and to test the module under application-specific conditions. The manufacturer disclaims liability for damages resulting from improper use, modification, or failure to follow these guidelines.
The product is compliant with the RoHS (Restriction of Hazardous Substances) directive. Proper waste disposal according to local regulations is recommended at the end of the product's lifecycle.
