What are the Common Interfaces for TFT LCD Display?

There are various types of interfaces for TFT LCD screens, each optimized for different application scenarios and requirements. Choosing the appropriate interface is crucial for system performance, cost, power consumption, and design complexity.

According to different data transmission methods, common interface types for TFT LCD display screens mainly include the following:

1. RGB Parallel Interface

Parallel transmission of pixel data through multiple data lines (usually 16, 18, or 24 bits).

Application: Small and medium-sized display screens, industrial control device, etc.

2. MCU interface (a type of parallel port, 8080/6800)

Data is transmitted in a time-sharing manner through control commands and data lines.

Application: Portable terminals, instruments and meters, etc.

3. SPI Serial Peripheral Interface

Pixel data is transmitted in series through clock and data lines.

Application: Smart wearable devices, small display screen(like 0.96 inch, 1.54 inch)

4. LVDS interface

Used for high-speed and large data transmission.

Application: Medical equipment, car central control screens, etc.

5. MIPI interface

Specially designed for high-resolution mobile display screens, using differential signal transmission.

Application: Embedded devices that require high-performance displays.

6. HDMI interface

Digital audio and video transmission interface, transmitting all signals in one line.

Application: Intelligent advertising machine, embedded industrial all in one PC, etc.

7. EDP interface

The embedded version of DisplayPort is commonly found in laptops.

Application: Integrated machines, high-end industrial displays, and some automotive displays, etc.

Summary for Interface

1. Ultra small screen/low requirements: SPI (lowest cost, minimum pins).

2. Small and medium-sized screens/micro-controllers: MCU or SPI interface

3. Medium screen/Embedded Linux/Requires good performance: RGB (good performance, relatively simple design) or MIPI DSI (few pins, high performance but complex design).

4. Mobile devices/high-performance embedded: MIPI DSI (absolute mainstream, high-performance and low-power).

5. Laptop/Industrial Large Screen/Automotive: LVDS (Traditional) or eDP (Mainstream Trend, Stronger Performance Features).

6. External monitor/TV: HDMI/DP (Consumer Electronics Standard).

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