LCD Module

An LCD module (also known as a "liquid crystal module," "LCD panel module," "LCD display module," "liquid crystal display module," or "TFT-LCD module") is a device used to display information such as images and text on a liquid crystal display. It incorporates LCD components such as a liquid crystal panel and an LCD driver to render images. When an LCD module operates independently, it may also be referred to as an LCD unit.

Download the summary sheet to understand the features and functions of Epson's LCD Controller ICs

Difference Between an LCD Module and an LCD Panel

An LCD module is a more complex and functional device that includes an LCD panel as one of its components. The LCD panel is the display element within the module.
The LCD panel is the core component of a liquid crystal display, responsible for rendering images using liquid crystal molecules. It consists of several parts, including a liquid crystal layer, polarizing filters, color filters, and a backlight. By applying voltage to the liquid crystal layer, the orientation of the molecules changes, controlling the amount of light that passes through and thereby forming images.

What is an LCD Controller?

An LCD controller (Liquid Crystal Display Controller) is an integrated circuit (IC) used to control an LCD display.

Main Functions of an LCD Controller:

The main role of an LCD controller is to process the image data to be displayed on the screen and transmit it to the LCD driver at the appropriate timing.

The primary functions of an LCD controller are as follows:
Receiving image data: It receives image data from a CPU or other sources and writes it to an internal frame buffer.
Generating display image data: It processes the data in the frame buffer to generate the final image to be displayed.
Transmitting image data: It sends the processed image data to the LCD driver at the appropriate timing for each pixel on the LCD panel.
Backlight control: It manages the on/off state and brightness of the backlight to adjust the display’s brightness.

Advantages of Building a Display System with an LCD Module and LCD Controller

Combining an LCD module with an LCD controller to build a display system offers several benefits:

  1. Continued use of low-cost MCUs
    You can build a display system using the same low-cost microcontroller (MCU) already used in existing products.

  2. Platform scalability
    LxCD controllers support various LCD panel resolutions. By integrating an LCD controller, you can reduce both development costs and time, enabling a scalable platform for product development.


Documents related to Display Controllers(LCDC)

You can request the following documents related to Display Controllers. Please feel free to request.

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