23.0 " Capactive Touchscreen Embedded DisplayPort (eDP)

Embedded DisplayPort (eDP) is a standard protocol in the field of digital display technology. It was developed by the Video Electronics Standards Association (VESA) and is widely used in industrial applications. eDP provides an efficient and reliable method for transmitting graphics data from the main controller to the display, meeting the demands for high-definition images.

Here are some key points about eDP:

Purpose and Compatibility:

eDP is an extension of the DisplayPort (DP) protocol specifically designed for embedded applications.

It is fully compatible with DP, making it a superset of DP features.

Unlike DVI or HDMI, eDP is commonly used for internal screens in devices like laptops, tablets, and smartphones.

Advantages of eDP:

High Bandwidth: eDP offers high data transfer rates.

Integration: It simplifies product design by integrating various display-related functions.

Widespread Use: eDP is widely adopted in laptops, tablets, and other devices with integrated displays.

Signal Components:

Main-Link: A unidirectional link for high-bandwidth, low-latency data transfer. It carries uncompressed video and audio signals.

AUX_CH: A half-duplex bidirectional channel used for managing the link and devices.

Hot Plug Detect (HPD): A unidirectional interrupt signal indicating device hot-plugging.

Comparison with HDMI and DP:

HDMI: HDMI is a fully digital interface for transmitting uncompressed audio and video signals. It requires licensing fees and is widely used in consumer electronics.

DP: DP is a free protocol with higher bandwidth than HDMI. It has gained popularity due to its open nature and compatibility with eDP.