Character LCD Module Design Manual

┃What Is a Character LCD Module?

Character LCD modules display text and symbols using fixed dot matrix patterns (e.g., 5x8 or 5x10). Common module formats include 16x2 and 20x4, suitable for low-data user interfaces.

Key Features

• Standard controller support (ST7066 or compatible ICs)

• MCU/MPU interface with minimal external components

• Designed for low-cost, small/medium-size display applications

• Multiple backlight options and display polarities (positive/negative)

┃Customized Services

Eileentek leverages deep expertise in LCD module design to provide client-specific solutions, including:

• Custom character and line configurations

• Mechanical adjustments (e.g., module size, screw hole positioning, FPC cable length)

• Interface pinout and header reconfiguration

• Polarizer type selection, backlight color tuning, and brightness control

• Compatibility with various MCU architectures and platforms

We support the full product lifecycle—from definition and prototyping to mass production—helping reduce development cycles and ensure seamless integration.

┃Applications

Character LCD modules are widely used in:

• Industrial control panels (e.g., PLCs, temperature controllers)

• Medical equipment displays

• Home appliances (e.g., microwave ovens, washing machine control panels)

• POS systems and cash registers

• Fitness equipment, testing instruments, and other devices

┃Recommendations

Key considerations for selecting/designing a character LCD module:

• Character Format & Layout: Match display rows/columns to UI specs (e.g., 16x2, 20x4).

• Backlight Specs: Choose LED color and brightness based on ambient light conditions for optimal visibility.

• Viewing Direction & Polarization: Align with user’s viewing angle (e.g., 6 o’clock, 12 o’clock) and polarizer type (positive/negative).

• Interface Compatibility: Ensure compatibility with MCU communication methods (Parallel, I²C, SPI).

• Power Specs: Verify supply voltage (e.g., 3.3V/5V) and current consumption against system design.

• Operating Range: Confirm LCD can operate within expected temperature conditions (e.g., -20°C to 70°C).

┃Product Overview

Stable, concise, and highly efficient—character-based LCD display modules serve as essential information interfaces in industrial, medical, and embedded systems. Whether your application requires an 8x2, 16x2, or 40x4 display format, Eileentek offers a wide range of sizes, backlight colors, interface options, and controller IC configurations. Our modules support wide voltage operation and perform reliably under extreme temperatures, making them ideal for long-term supply and high-reliability applications.

🔎 Find the Character LCD module that best suits your needs now.