LS045I09-MP-V1: 4.45-Inch a-Si TFT LCD Module, 480×854 Resolution, 16.7M Colors, MIPI Interface, 24-Pin, GC9503CV Driver

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LS045I09-MP-V1: 4.45-Inch a-Si TFT LCD Module, 480×854 Resolution, 16.7M Colors, MIPI Interface, 24-Pin, GC9503CV Driver

Product Subtitle / Keywords

4.45 Inch Display, 480(RGB)×854 Resolution, Transmissive a-Si TFT-LCD, MIPI Interface (2-Data Lane), COG+FPC+B/L, 16.7M Colors, 24-Pin, GC9503CV Driver, 60×109×2.06 mm, -20°C~70°C Operating Temperature, 350 cd/m² Luminance, 700:1 Contrast Ratio

1. Executive Summary & Product Positioning

The LS045I09-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 4.45-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, absolute maximum ratings, detailed electrical characteristics, complete MIPI interface pinout, and comprehensive electro-optical performance. It delivers a resolution of 480(RGB)×854 with 16.7M-color display capability, driven by the GC9503CV controller.

The document provides the core parameters necessary for system integration into embedded display applications requiring a standard portrait-oriented 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: Active matrix TFT, Transmissive type.
  • Display Format: Graphic 480(RGB)×854 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.
  • Drive IC: GC9503CV.
  • Connector Pin Count: 24-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) 60 × 109 × 2.06 mm
Active area (H×V) 55.44 × 98.637 mm
Number of dots / Resolution 480(RGB) × 854 pixel
Panel Size (Diagonal) 4.45 inch

3.2 Electrical & Interface Specifications

3.2.1 Absolute Maximum Ratings

Item Symbol Min Max Unit
Supply voltage VCC -0.3 4.6 V
Supply voltage IOVCC -0.3 4.6 V
Operating temperature TOPR -20 70 °C
Storage temperature TSTR -30 80 °C

3.2.2 Pin Description (24-pin FPC)

PIN NO. Symbol I/O Description
1 D1N I Negative MIPI differential data inputs
2 D1P I Positive MIPI differential data inputs
3 GND P GND
4 GND P GND
5 D0N I Negative MIPI differential data inputs
6 D0P I Positive MIPI differential data inputs
7 GND P GND
8 GND P GND
9 CLKN I Negative MIPI differential clock inputs
10 CLKP I Positive MIPI differential clock inputs
11 GND P GND
12 NC   No Connection
13 VPP(NC)   No Connection
14 RESET I Global reset pin
15 GND P GND
16 GND P GND
17 IOVCC P Power voltage (1.8-3.3V)
18 VCI P Power voltage (2.8-3.3V)
19 GND P GND
20 NC   No Connection
21 GND P GND
22 LEDK P Power for LED backlight cathode
23 LEDA P Power for LED backlight anode
24 GND P GND

Interface Summary:

  • MIPI Interface: Uses 2 data lanes (D0, D1) and 1 clock lane (CLKN/CLKP) for high-speed serial data transmission.
  • Backlight: Dedicated LEDA (Anode, Pin 23) and LEDK (Cathode, Pin 22) pins.
  • Power: IOVCC (Pin 17) for I/O interface (1.8-3.3V), VCI (Pin 18) for main logic (2.8-3.3V), GND (Pins 3, 4, 7, 8, 11, 15, 16, 19, 21, 24) for ground.
  • Control: RESET (Pin 14) for hardware reset.
  • Unused Pins: Pins 12, 13, 20 are NC — leave floating.

3.2.3 Backlight Unit

LED Circuit Configuration 10 Chip-White LED Series
Drive Condition IF = 40mA, Vf = 15±0.8V

3.3 Optical & Electro-Optical Characteristics

Item Symbol Condition Min. Typ. Max. Unit
Response time Tr+Tf θx = θy=0 --- 20 35 ms
Contrast Ratio CR θx = θy=0 550 700 ---  
Transmittance T% θx = θy=0 3.4 4.0 --- %
Color Chromaticity (CIE1931) White Wx θx = θy=0 0.269 0.299 0.329  
Color Chromaticity (CIE1931) White Wy θx = θy=0 0.297 0.327 0.357  
Viewing angle (θT, θB, θL, θR)   CR > 10 --- 80 --- Deg.
Luminance (IF = 40mA) L     350 --- cd/m²

3.4 Inspection Standards

The inspection standard is based on GB/T 2828-2003 (normal inspection, Class II). The AQL (Acceptable Quality Level) for major and minor defects is defined in the specification.

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, portrait-oriented display with a high-speed serial interface

Critical Design Considerations

  1. Interface (MIPI with 2 Data Lanes): This module uses a MIPI-DSI interface with 2 data lanes and 1 clock lane. The host MCU must have a MIPI-DSI controller that supports at least 2 data lanes.
  2. Power Supply: Provide stable IOVCC (1.8-3.3V) for the I/O interface (connected to Pin 17). Provide stable VCI (2.8-3.3V) for the main logic (connected to Pin 18). The backlight requires a constant-current LED driver connected to LEDA (Anode, Pin 23) and LEDK (Cathode, Pin 22), set to 40 mA at approximately 15V (Typ).
  3. Mechanical Integration: Module outline: 60mm (H) × 109mm (V) × 2.06mm (D). Active area: 55.44mm × 98.637mm. FPC: 24-pin FPC with PI reinforcement.
  4. Temperature Limits: Operating Temperature: -20°C to +70°C. Storage Temperature: -30°C to +80°C.

Handling & Compliance

  • The module is RoHS compliant.
  • Observe standard ESD precautions during handling and assembly.
  • The module contains fragile glass and a 24-pin FPC – handle with care.
  • Avoid bending the FPC sharply, especially near the connector interface.
  • The module has a total thickness of 2.06mm – be careful when handling to avoid flexing.

5. Conclusion & Design-In Support

The LS045I09-MP-V1 specification details a standard 4.45-inch portrait display module with a MIPI interface and GC9503CV driver — an excellent choice for applications requiring a larger display area with a high-speed serial interface.

Key Strengths

  • Standard Portrait Resolution (480×854): Widely supported by many MCUs and graphics libraries, simplifying software development.
  • MIPI Interface with 2 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 4.45-inch Size: Suitable for a wide range of industrial and embedded applications.
  • Wide Operating Temperature Range: -20°C to +70°C for operation and -30°C to +80°C for storage.
  • High Brightness (350 cd/m²): Provides good readability in various lighting conditions.
  • Excellent Contrast Ratio (700:1): Delivers deep blacks and vibrant colors.

Main Design Focus

  • The critical design task is properly implementing the MIPI-DSI interface with 2 data lanes to ensure reliable high-speed data transfer.
  • Supporting requirements: Provide stable IOVCC (1.8-3.3V) and VCI (2.8-3.3V) power. Provide a constant-current backlight driver set to 40 mA at 15V (Typ). Mechanical integration — the module outline is 60mm × 109mm × 2.06mm. FPC connector — verify the 24-pin FPC.

This module is an excellent choice for industrial control panels, smart home devices, and any embedded application requiring a larger, high-resolution display with a high-speed MIPI interface.