LS050I04-MP-V2: 4.97-Inch a-Si TFT LCD Module, 1080×1920 Resolution, 16.7M Colors, MIPI Interface (4-Lane), 34-Pin Board-to-Board Connector
Product Subtitle / Keywords
4.97 Inch Display, 1080(RGB)×1920 Resolution, Transmissive a-Si TFT-LCD, MIPI Interface (4-Data Lane), COG+FPC+B/L, 16.7M Colors, 34-Pin Hirose BM20B(0.8)-34DP-0.4V(51) Connector, VSP=+5.0V, VSN=-5.0V, VDD-1V8=1.8V, -20°C~60°C Operating Temperature
1. Executive Summary & Product Positioning
The LS050I04-MP-V2, developed by Lixin (Wan'an) Intelligent Display Technology Co., Ltd. (立信(万安)智显科技有限公司), is a 4.97-inch transmissive type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module.
This product specification (Revision 1.0, Module Type: COG+FPC+B/L) serves as the definitive technical document, defining its structural composition (COG+FPC+B/L), physical features, mechanical dimensions, detailed electrical characteristics, complete MIPI interface pinout, and comprehensive electro-optical performance. It delivers a resolution of 1080(RGB)×1920 with 16.7M-color display capability.
The document provides the core parameters necessary for system integration into embedded display applications requiring a high-resolution, full-HD display with a high-speed serial interface. The unequivocal recommendation for engineers is to strictly adhere to the electrical specifications, interface timing, and mechanical tolerances described herein to ensure reliable performance and compatibility.
2. Detailed Product Overview & Architecture
- Core Technology: Transmissive type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module, which is composed of a TFT-LCD panel, a driver circuit and a backlight unit.
- Display Mode: Transmissive, normally black.
- Display Format: Graphic 1080(RGB)×1920 Dot-matrix.
- Display Characteristics: Capable of displaying up to 16.7 million colors.
- Module Construction: COG (Chip-On-Glass) + FPC (Flexible Printed Circuit) + B/L (Backlight Unit).
- Input Data: MIPI.
- Connector Type: 34-Pin Board-to-Board (B2B) connector, Manufacturer: Hirose, Part Number: BM20B(0.8)-34DP-0.4V(51).
- Approval Status: ☑ Approved Product Specification only (as per signature block).
3. Exhaustive Technical Specifications
3.1 Mechanical & Physical Specifications
| Panel Size (Diagonal) | 4.97 inch |
| Number of dots / Resolution | 1080(RGB) × 1920 pixel |
| Display Type | 4.97" TFT-LCD, transmissive, normally black |
| Connector | 34-Pin Board-to-Board, Hirose BM20B(0.8)-34DP-0.4V(51) |
3.2 Electrical & Interface Specifications
3.2.1 Pin Description (34-pin B2B Connector)
The following table details the critical power, ground, MIPI interface, and backlight signals from the specification's pin description table.
| Pin No. | Symbol | I/O | Description | Remarks |
|---|---|---|---|---|
| 18 | CLK-P | - | MIPI clock positive signal | |
| 19 | VSP | I | Power supply for analog (+5.0V) | |
| 20 | CLK-N | I | MIPI clock negative signal | |
| 21 | VSP | I | Power supply for analog (+5.0V) | |
| 22 | GND | - | Ground | |
| 23 | VDD-1V8 | I | Power supply for I/O (1.8V) | |
| 24 | LANE0-P | I/O | MIPI data0 positive signal | |
| 25 | GND | - | Ground | |
| 26 | LANE0-N | I/O | MIPI data0 negative signal | |
| 27 | LED-ANODE | - | LED back light power positive | |
| 28 | GND | - | Ground | |
| 29 | NC | - | Not connect | |
| 30 | LANE3-P | I | MIPI data3 positive signal | |
| 31 | LED-CATHODE1 | - | LED back light power group1 negative | |
| 32 | LANE3-N | I | MIPI data3 negative signal | |
| 33 | LED-CATHODE2 | - | LED back light power group2 negative | |
| 34 | GND | - | Ground |
Interface Summary:
- MIPI Interface: Uses 4 data lanes (LANE0, LANE1, LANE2, LANE3) and 1 clock lane (CLK-P/CLK-N) for high-speed serial data transmission.
- Power: Requires three separate power rails: VSP (+5.0V, Pins 19, 21) for analog, VDD-1V8 (1.8V, Pin 23) for I/O, and GND (Pins 22, 25, 28, 34) for ground.
- Backlight: LED-ANODE (Pin 27), LED-CATHODE1 (Pin 31), and LED-CATHODE2 (Pin 33) for LED backlight power (two cathode groups).
- Unused Pins: Pin 29 is NC — leave floating.
3.2.2 Electrical Characteristics
The specification provides detailed electrical characteristics for the module.
| Item | Symbol | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Supply voltage (I/O) | VDD-1V8 | 1.71 | 1.8 | 3.3 | V |
| Supply voltage (Analog +) | VSP | 4.75 | 5.0 | 5.25 | V |
| Supply voltage (Analog -) | VSN | -5.25 | -5.0 | -4.75 | V |
| Current consumption (VSP, normal) | IVSP | - | 14.3 | 21.5 | mA |
| Current consumption (VSN, normal) | IVSN | - | 9.6 | 13.9 | mA |
| Current consumption (VDD-1V8, normal) | IVDD-1V8 | - | 16.8 | 25.4 | mA |
| Current consumption (Deep standby) | IVSP/IVSN/IVDD-1V8 | - | 0.004 | 0.02 | mA |
3.2.3 MIPI D-PHY DC Characteristics
The specification provides DC characteristics for the MIPI D-PHY interface, ensuring signal integrity.
| Item | Symbol | Unit | Min. | Typ. | Max. |
|---|---|---|---|---|---|
| HS-RX Differential input high threshold | VIDTH | mV | - | - | 70 |
| HS-RX Differential input low threshold | VIDTL | mV | -70 | - | - |
| HS-RX Common-mode voltage HS receive mode | VCMRX(DC) | mV | 70 | - | 330 |
| HS-RX Differential input impedance | ZID | Ω | - | 100 | - |
| LP-RX Logic 1 input voltage | VIH | mV | 880 | - | 1350 |
| LP-TX Thevenin output high level | VOH | V | 1.1 | 1.2 | 1.3 |
3.2.4 Timing Characteristics
The specification provides detailed timing parameters for the MIPI DSI interface and horizontal timing.
| Item | Symbol | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| DSICLK Frequency | fDSICLK | 100 | - | 500 | MHz |
| DSI Data Transfer Rate | tDSIR | 200 | - | 1000 | Mbps |
| Pixel clock frequency | PCLK | 136.42 | 143.6 | 150.78 | MHz |
| MIPI Speed (4 lane) | - | 950 | 1000 | 1050 | Mbps/lane |
| Horizontal blanking period | HBLK | - | 160 | - | PCLK |
| 1 Horizontal timing | - | 8.224 | 8.635 | 9.090 | us |
3.2.5 Power ON Sequence
The specification defines a strict power-on sequence to ensure proper initialization:
- Reset (Reset="L"): Assert reset low.
- VDD-1V8 ON: Power up the I/O supply (Typ 1.8V).
- WAIT 150ms (min 1ms).
- VSP ON: Power up the positive analog supply (Typ 5.0V).
- WAIT 150ms (min 0ms).
- VSN ON: Power up the negative analog supply (Typ -5.0V).
- WAIT 50ms (min 1ms).
- Reset release ("L"→"H"): De-assert reset.
- WAIT 10ms (min 3ms).
- Manufacturer command access Protect: Send command 0XB0 with parameter 0X04.
- NVM load control: Send command 0XD6 with parameter 0x01.
3.2.6 Reset Timing
The specification provides reset timing parameters.
| Item | Symbol | Min. | Max. | Unit |
|---|---|---|---|---|
| Reset low-level width1 (Power supply on) | tRW1 | 1000 | - | us |
| Reset low-level width2 (Operation) | tRW2 | 1000 | - | us |
| Reset time (Sleep IN) | tRT1 | - | 3 | ms |
| Reset time (Sleep OUT) | tRT2 | - | 3 | ms |
3.3 Optical & Electro-Optical Characteristics
Optical characteristics (brightness, contrast, viewing angles, etc.) are not fully detailed in the provided excerpt.
4. Application Guidelines & Critical Notes
Intended Use
- Industrial control panels and human-machine interfaces (HMIs)
- IoT display nodes and smart home controls
- Handheld instruments and consumer electronics
- Any application requiring a compact, high-resolution (FHD) display with a high-speed serial interface
Critical Design Considerations
- Interface (MIPI with 4 Data Lanes): This module uses a MIPI-DSI interface with 4 data lanes and 1 clock lane. The host MCU must have a MIPI-DSI controller that supports at least 4 data lanes.
- Power Supply: Provide stable VDD-1V8 (1.8V) for I/O, VSP (+5.0V) and VSN (-5.0V) for analog. The backlight requires a constant-current LED driver connected to the LED-ANODE, LED-CATHODE1, and LED-CATHODE2 pins.
- Power Sequencing: Strictly follow the Power ON Sequence to prevent damage or improper initialization.
- Connector: The module uses a 34-pin Hirose BM20B(0.8)-34DP-0.4V(51) Board-to-Board connector. The mating connector must be selected accordingly.
- Temperature Limits: Operating Temperature: -20°C to +60°C. Storage Temperature: -30°C to +70°C.
Handling & Compliance
- The module is RoHS compliant.
- Observe standard ESD precautions during handling and assembly.
- The module contains fragile glass and a FPC – handle with care.
- Avoid bending the FPC sharply, especially near the connector interface.
5. Conclusion & Design-In Support
The LS050I04-MP-V2 specification details a high-resolution 4.97-inch FHD display module with a 4-lane MIPI interface and a 34-pin Hirose B2B connector — an excellent choice for applications requiring a larger display area with full HD resolution.
Key Strengths
- Full HD Resolution (1080×1920): Provides sharp and detailed image quality.
- MIPI Interface with 4 Data Lanes: Provides high bandwidth for smooth video and animation playback.
- High Color Depth: 16.7M colors (24-bit true color) provides excellent color reproduction.
- Standard 4.97-inch Size: Suitable for a wide range of industrial and embedded applications.
- Detailed Power Sequencing and Timing: The specification provides clear power-on sequences and timing parameters for reliable operation.
- Standardized Connector: Uses a common Hirose BM20B series B2B connector.
Main Design Focus
- The critical design task is properly implementing the MIPI-DSI interface with 4 data lanes and strictly following the power sequencing requirements to ensure reliable high-speed data transfer and proper module initialization.
- Supporting requirements: Provide stable VDD-1V8 (1.8V), VSP (+5.0V), and VSN (-5.0V) power rails. Provide a constant-current backlight driver. Use the specified Hirose BM20B(0.8)-34DP-0.4V(51) connector.
This module is an excellent choice for industrial control panels, smart home devices, and any embedded application requiring a larger, high-resolution FHD display with a high-speed MIPI interface.
