LS070I18-MP-V1: 7.0-Inch a-Si TFT LCD Module, 800×1280 Resolution, 4-lane MIPI DSI Interface, 40-Pin, Driver IC JD9165BA, Color Active Matrix, Transmissive, IPS, Normally Black
Product Subtitle / Keywords
7.0 Inch Display, 800(RGB)×1280 Resolution, Color Active Matrix a-Si TFT-LCD Module, 4-lane MIPI DSI Interface, 40-Pin Connector, Driver IC JD9165BA, Transmissive, IPS, Normally Black, Viewing Direction: ALL, Outline Dimension: 103.66±0.2 (W) x 97.35 (H) x 2.90±0.15 (T) mm, Active Area: 94.2 × 101.5 mm, Pixel Pitch: 0.11775 (W) x 0.0793 (H) mm, Operating Temp: -10°C to +60°C, Storage Temp: -20°C to +70°C, Backlight Forward Voltage (Vf): 3.06V (Typ) / 3.47V (Max) per LED, Backlight Forward Current (If): 2.90mA (Typ) / 3.06mA (Max) per LED, Backlight: 6 LEDs in series, Luminance: 450 cd/m² (Typ), VCOM: -1.756V ±0.3V, VDDIN: 3.3V, COG+FPC+B/L, ROHS Compliant, Lesson Smart Display Technology Co., Ltd
1. Executive Summary & Product Positioning
The LS070I18-MP-V1, developed by Lesson Smart Display Technology Co., Ltd. (立信(万安)智显科技有限公司), is a 7.0-inch color active matrix a-Si TFT-LCD module using amorphous silicon TFT (Thin Film Transistor) as a switching device.
This product specification (Revision 1.0) serves as the definitive technical document, defining its electrical and optical characteristics, outline dimensions, 40-pin interface pin assignments for a 4-lane MIPI DSI interface, and backlight LED circuit diagram.
The document provides the core parameters necessary for system integration into embedded display applications requiring a standard 7.0-inch display with an MIPI DSI 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: Color active matrix a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module. It is composed of a color TFT-LCD panel, driver IC, FPC and a back light unit.
- Display Type: Transmissive, IPS (In-Plane Switching), Normally Black display.
- Display Format: Graphic 800 horizontal by 1280 vertical pixel array.
- Module Construction: COG+FPC+B/L (Chip-On-Glass + Flexible Printed Circuit + Backlight).
- Interface Type: 4-lane MIPI DSI Interface.
- Driver IC: JD9165BA.
- Pin Count: 40-pin connector (Hirose FH33J-40S-0.5H (10) or equivalent, 0.5mm pitch).
- Backlight: 6 LEDs in series, operating at 3.06V (Typ) and 2.90mA (Typ) per LED.
- Regulatory Compliance: ROHS Compliant.
3. Exhaustive Technical Specifications
3.1 Mechanical & Physical Specifications
| Module Model | LS070I18-MP-V1 |
| LCD Size (Diagonal) | 7.0 inch |
| Resolution | 800 (RGB) × 1280 Dots |
| Pixel Arrangement | RGB Vertical Stripe |
| Pixel Pitch (WxH) | 0.11775 (W) × 0.0793 (H) mm |
| Active Area | 94.2 (W) × 101.5 (H) mm |
| Outline Dimension | 103.66±0.2 (W) × 97.35 (H) × 2.90±0.15 (T) mm |
| Display Type | Transmissive, IPS, Normally Black |
| Viewing Direction | ALL |
| Module Type | COG+FPC+B/L |
| Connector Type | Hirose FH33J-40S-0.5H (10), 40-pin, 0.5mm pitch |
| Driver IC | JD9165BA |
| Operating Temperature | -10°C to +60°C |
| Storage Temperature | -20°C to +70°C |
| Surface Treatment | Pertbess (likely AG: Anti-Glare) |
| Regulatory Compliance | ROHS Compliant |
3.2 Electrical & Interface Specifications
3.2.1 Pin Description (40-pin FPC - MIPI DSI Interface)
The module uses a 40-pin interface (Hirose FH33J-40S-0.5H (10)) with a 4-lane MIPI DSI configuration. The full pin assignments are detailed from the specification:
| Pin No. | Symbol | I/O | Functions |
|---|---|---|---|
| 1 | VCOM | P | Common Voltage (-1.756+/-0.3V) |
| 2,3 | VDDIN | P | Power input 3.3 Voltage |
| 4,7,10,13,16,19,22,25,30 | GND | P | Power Ground |
| 5 | RST | I | Global reset signal, low active |
| 6,23,24,26,28 | NC | - | No connection |
| 8,9 | MIPI_0N, MIPI_0P | I | MIPI DSI differential data pair (Lane 0) |
| 11,12 | MIPI_1N, MIPI_1P | I | MIPI DSI differential data pair (Lane 1) |
| 14,15 | MIPI_CKN, MIPI_CKP | I | MIPI DSI differential CLK pair |
| 17,18 | MIPI_2N, MIPI_2P | I | MIPI DSI differential data pair (Lane 2) |
| 20,21 | MIPI_3N, MIPI_3P | I | MIPI DSI differential data pair (Lane 3) |
| 27 | PWMO | O | PWM control signal for BL driver |
| 29 | VCL | O | Output voltage pin |
| 31 | LED- | P | Power for LED backlight negative |
| 32 | VCL | O | Output voltage pin |
| 33,37 | NC | - | No connection |
| 34 | AVDD | P | Analog power supply |
| 35,38 | LED+ | P | Power for LED backlight positive |
| 36 | GND | P | Power Ground |
| 39,40 | LED- | P | Power for LED backlight negative |
Interface Summary:
- MIPI Interface: Uses 4 data lanes (MIPI_0, MIPI_1, MIPI_2, MIPI_3) and 1 clock lane (MIPI_CK) for high-speed serial data transmission.
- Backlight: LED+ (Pins 35, 38) for backlight Anode and LED- (Pins 31, 39, 40) for backlight Cathode.
- Power: VDDIN (Pins 2, 3) for 3.3V power input, AVDD (Pin 34) for analog power, VCOM (Pin 1) for common voltage, and VCL (Pins 29, 32) for output voltage.
- Control: RST (Pin 5) for global reset (active low), PWMO (Pin 27) for PWM control of the backlight driver.
- Ground: Multiple GND (Pins 4, 7, 10, 13, 16, 19, 22, 25, 30, 36) for power ground.
3.2.2 Backlight Characteristics (Ta=25°C)
| Parameter | Symbol | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Forward Current per LED | If | 2.616 | 2.90 | 3.06 | mA |
| Forward Voltage per LED | Vf | 2.7 | 3.06 | 3.47 | V |
| Luminance | Lv | 400 | 450 | - | cd/m² |
| Uniformity | Uniformity | 75 | - | - | % |
| Color Coordinate X | X | 0.27 | 0.29 | 0.32 | - |
| Color Coordinate Y | Y | 0.27 | 0.29 | 0.32 | - |
Note: Backlight configuration: 6 LEDs in series. Test conditions: Vr=*V (reverse voltage condition as specified in the outline drawing).
3.2.3 Electro-Optical Characteristics (Ta=25°C)
| Parameter | Symbol | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Forward Voltage (LED) | AVGLv | -0.98 | -3.06 | -4.63 | V |
| Reverse Current | - | - | - | 0.35 | mA |
4. Application Guidelines & Critical Notes
Intended Use
- Industrial control panels and human-machine interfaces (HMIs).
- Embedded systems requiring a standard 7.0-inch display with MIPI interface, IPS technology, and wide viewing angles.
Critical Design Considerations
- Interface (4-lane MIPI DSI): This module uses a 4-lane MIPI DSI interface. The host controller must support 4-lane MIPI to drive the 800×1280 resolution. Ensure proper MIPI differential pair routing with controlled impedance.
- Power Supply: Provide stable VDDIN (3.3V) and VCOM (-1.756V ± 0.3V) voltages. The VCOM is a critical voltage for the common electrode and must be precisely set according to the specification.
- Backlight Driving: The backlight consists of 6 LEDs in series. A constant-current LED driver is required. The typical forward current per LED is 2.90mA at a typical forward voltage of 3.06V. The PWMO pin (Pin 27) can be used to control backlight brightness via PWM.
- DVDD & AVDD: The AVDD (Pin 34) is the analog power supply. Ensure it is clean and well-regulated within the specified limits.
- Reset (RST): The RST pin (Pin 5) is an active-low global reset. It must be held low for a minimum pulse width during power-up to guarantee proper initialization.
- VCL Output: The VCL pin (Pins 29, 32) is an output voltage pin. Do not connect to external power supplies. It may require a capacitor to ground for stability.
- NC Pins: All NC (No Connection) pins should be left open. Do not connect them to ground or power.
- Temperature Limits: Operating Temperature: -10°C to +60°C. Storage Temperature: -20°C to +70°C.
- Power Sequencing: A proper power sequence should be followed. Ensure VDDIN is stable before applying MIPI signals. The backlight should be applied after the logic power is fully stable.
Handling & Compliance
- The module is ROHS Compliant ("A MATERIAL AND PROCESSING SHOULD BE LEAD FREE").
- Observe standard ESD precautions during handling and assembly.
- The module contains fragile glass and FPC – handle with care.
- Avoid bending the FPC sharply, especially near the connector interface.
- Do not attempt to disassemble or process the LCD Module.
- All NC terminals should be open. Do not connect anything.
- If the logic circuit power is off, do not apply the input signals.
5. Conclusion & Design-In Support
The LS070I18-MP-V1 specification details a standard 7.0-inch Display (800×1280) module with a 4-lane MIPI DSI interface, IPS technology for wide viewing angles, driver IC JD9165BA, and a 40-pin connector — an excellent choice for applications requiring a reliable and standard 7.0-inch display with a high-speed serial interface.
Key Strengths
- High Resolution (800×1280): Provides sharp image quality for a 7.0-inch display.
- MIPI Interface (4-lane): High-speed serial interface suitable for high-resolution video content.
- IPS Technology & ALL Viewing Direction: Superior color and contrast from wide viewing angles.
- Driver IC JD9165BA: Specific driver for optimized display performance.
- Integrated PWM Control for Backlight: The PWMO pin allows for direct brightness adjustment.
- High Brightness (450 cd/m² Typ): Suitable for most indoor applications.
- 40-pin Hirose Connector: Standard, compact, and reliable connector for industrial applications.
- ROHS Compliant: Environmentally friendly design.
Main Design Focus
- The critical design task is properly configuring the MIPI DSI interface on the host processor for 4-lane operation and ensuring reliable high-speed data transfer for the 800×1280 resolution.
- Supporting requirements: Provide a stable VDDIN (3.3V) and precise VCOM (-1.756V ± 0.3V) power supplies. Design a constant-current backlight driver for the series-connected LED backlight with typical 2.90mA at 3.06V per LED. Follow the reset timing and ESD precautions. Ensure proper mechanical mounting and use correct connector (Hirose FH33J-40S-0.5H (10) or equivalent).
This module is an excellent choice for industrial HMIs, embedded displays, and any application requiring a standard 7.0-inch MIPI IPS display with a 40-pin interface.
