Product Subtitle / Keywords
3.97 Inch Display, 480(RGB)×800 Resolution, Transmissive a-Si TFT-LCD, RGB Interface, COG+FPC+B/L, 16.7M Colors, 40-Pin, FL7703N Driver, 57.14×96.85×2.0 mm, 500 cd/m² Brightness, 800:1 Contrast Ratio, IPS, -20°C~70°C Operating Temperature
1. Executive Summary & Product Positioning
The LS0397106-MP-V1, developed by Lixin (Wan‘an) Intelligent Display Technology Co., Ltd. (立信(万安)智显科技有限公司), is a 3.97-inch transmissive amorphous Silicon TFT-LCD (a-Si TFT-LCD) 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, absolute maximum ratings, detailed electrical characteristics, complete RGB interface pinout, and comprehensive electro-optical performance. It delivers a resolution of 480(RGB)×800 with 16.7M-color display capability, driven by the FL7703N controller.
The document provides the core parameters necessary for system integration into embedded display applications requiring a standard portrait-oriented display. Engineers must 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).
- Display Mode: Active matrix TFT-LCD module, composed of a TFT-LCD panel, a driver circuit and a backlight unit.
- Display Format: Graphic 480(RGB)×800 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: RGB.
- Viewing Direction: IPS (In-Plane Switching).
- Drive IC: FL7703N.
- Connector Pin Count: 40-Pin.
- Approval Status: ☑ Approved Product Specification only (as per signature block).
3. Exhaustive Technical Specifications
3.1 Mechanical & Physical Specifications
| Module size (H×V×D) | 57.14 × 96.85 × 2.0 mm |
| Active area (H×V) | 51.84 × 86.4 mm |
| Number of dots / Resolution | 480(RGB) × 800 pixel |
| Panel Size (Diagonal) | 3.97 inch |
| Pixel Pitch (H×V) | 0.108 × 0.108 mm |
Critical Mechanical Design Notes (from outline dimension drawing):
- Overall Module Thickness: 2.0 mm (thin profile).
- Display Type: 3.97″, TFT LCD, IPS.
- Display Mode: Transmissive, Mode Positive.
- Viewing Direction: IPS.
- Driver IC: FL7703N.
- VCC: 2.8V, IOVCC: 1.8V.
- Operating Temperature: -20°C ~ 70°C.
- Storage Temperature: -30°C ~ 80°C.
- Backlight: 6 Chip-White LEDs (2 Strings, 3 Series per String).
- Environmental Protection: RoHS.
- General Tolerance: ±0.20 mm (unless otherwise specified).
- Angular Tolerance: ∠ ±1/4°.
- FPC Total Thickness: PI 补强+FPC总厚=0.30±0.03mm.
- FPC Pin Count: 40 pins.
3.2 Electrical & Interface Specifications
3.2.1 Pin Description (40-pin FPC)
| PIN | SIGNAL | Description |
|---|---|---|
| 1 | GND | Ground |
| 2 | D0N | RGB Data signal input (Blue bit 0) |
| 3 | D0P | RGB Data signal input (Blue bit 1) |
| 4 | GND | Ground |
| 5 | D1N | RGB Data signal input (Green bit 0) |
| 6 | D1P | RGB Data signal input (Green bit 1) |
| 7 | GND | Ground |
| 8 | CLK | RGB Pixel Clock |
| 9 | GND | Ground |
| 10 | D2N | RGB Data signal input (Red bit 0) |
| 11 | D2P | RGB Data signal input (Red bit 1) |
| 12 | GND | Ground |
| 13 | D3N | RGB Data signal input (Blue bit 2) |
| 14 | D3P | RGB Data signal input (Blue bit 3) |
| 15 | GND | Ground |
| 16 | D4N | RGB Data signal input (Green bit 2) |
| 17 | D4P | RGB Data signal input (Green bit 3) |
| 18 | GND | Ground |
| 19 | D5N | RGB Data signal input (Red bit 2) |
| 20 | D5P | RGB Data signal input (Red bit 3) |
| 21 | GND | Ground |
| 22 | D6N | RGB Data signal input (Blue bit 4) |
| 23 | D6P | RGB Data signal input (Blue bit 5) |
| 24 | GND | Ground |
| 25 | D7N | RGB Data signal input (Green bit 4) |
| 26 | D7P | RGB Data signal input (Green bit 5) |
| 27 | GND | Ground |
| 28 | D8N | RGB Data signal input (Red bit 4) |
| 29 | D8P | RGB Data signal input (Red bit 5) |
| 30 | GND | Ground |
| 31 | D9N | RGB Data signal input (Blue bit 6) |
| 32 | D9P | RGB Data signal input (Blue bit 7) |
| 33 | GND | Ground |
| 34 | D10N | RGB Data signal input (Green bit 6) |
| 35 | D10P | RGB Data signal input (Green bit 7) |
| 36 | GND | Ground |
| 37 | D11N | RGB Data signal input (Red bit 6) |
| 38 | D11P | RGB Data signal input (Red bit 7) |
| 39 | GND | Ground |
| 40 | DE | Data Enable signal |
Interface Summary: RGB interface using 12 data pairs for 24-bit RGB data (8 bits per color), 1 clock pair, and 1 DE control signal. All other pins are ground; no NC pins.
3.2.2 Backlight Unit
| LED Circuit Configuration | 6 Chip-White LEDs (2 Strings, 3 Series per String) |
| Drive Condition (Total) | IF = 40mA, Vf = 16.8~19.2V |
Backlight Circuit Notes: Two separate anode/cathode pairs (LEDA1/LEDK1 and LEDA2/LEDK2). Each string requires 20 mA.
3.3 Optical & Electro-Optical Characteristics
| Item | Symbol | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Brightness (Center) | L | — | 500 | — | cd/m² |
| Contrast Ratio | CR | — | 800 | — | — |
| Response Time (Tr+Tf) | Tr+Tf | — | — | — | ms |
| Viewing Angle (CR>10) | θL/θR/θU/θD | — | 89/89/89/89 | — | deg |
3.4 Version Record
| Version | Revise Date | Page | Content |
|---|---|---|---|
| 00 | 2025-12-23 | ALL | New released |
4. Application Guidelines & Critical Notes
Intended Use
- Smart home control panels (smart speakers, thermostats)
- Wearable devices and smartwatches
- Automotive aftermarket displays (center console, instrument cluster)
- IoT edge devices requiring standard portrait display
Critical Design Considerations
- Interface (RGB with 24-bit Parallel Data): Requires a host MCU with a parallel RGB controller supporting 24-bit data.
- Power Supply: Provide stable VCC (2.8V) and IOVCC (1.8V). The backlight requires a dual-channel constant-current driver set to 20 mA per channel (40 mA total) at 16.8-19.2V.
- Mechanical Integration: Module outline 57.14×96.85×2.0 mm; active area 51.84×86.4 mm; 40-pin FPC.
- Optical Performance: IPS with 89° viewing angle in all directions, 500 cd/m² brightness, 800:1 contrast ratio.
- Temperature Limits: Operating -20°C~70°C, storage -30°C~80°C.
Handling & Compliance
- RoHS compliant.
- Observe standard ESD precautions.
- Handle fragile glass and FPC with care; avoid sharp bending.
5. Conclusion & Design-In Support
The LS0397106-MP-V1 specification details a standard 3.97-inch portrait display module with a parallel RGB interface, FL7703N driver, and IPS technology — an excellent choice for applications requiring a standard portrait display.
Key Strengths
- Standard Portrait Resolution (480×800): Widely supported by MCUs and graphics libraries.
- Parallel RGB Interface: Simple and direct connection.
- High Brightness: 500 cd/m² for excellent readability.
- High Contrast Ratio: 800:1 for sharp images.
- IPS Technology: Consistent image quality from any angle.
- Thin Profile: 2.0 mm allows slim product designs.
Main Design Focus
- Critical design task: Properly implement the parallel RGB interface with 24-bit data and correct timing.
- Power: Stable VCC (2.8V) and IOVCC (1.8V).
- Backlight: Dual-channel constant-current driver at 20 mA per channel.
- Mechanical: Verify 40-pin FPC and outline dimensions.
This module is an excellent choice for smart home, IoT, and any embedded application requiring a standard portrait display with excellent image quality and wide viewing angles.
