The Embedded DisplayPort (eDP) v1.4 standard represents a major milestone in display interface technology for laptops, tablets, and all-in-one PCs. Developed by the Video Electronics Standards Association (VESA), this specification optimizes power consumption, reduces system cost, and handles extreme display resolutions.
eDP 1.4 fully supports HBR2 (High Bit Rate 2) data rates of 5.4 Gbps per lane, as well as the faster HBR3 link rate of 8.1 Gbps per lane.
base specification and introduced several critical features for developers. Key Technical Features for Development Bandwidth & Speed: Supports HBR3 (High Bit Rate 3) at 8.1 Gbps per lane , allowing for a total of edp 1.4 specification pdf
Dedicated pins for PWM (Pulse Width Modulation) dimming and backlight enabling.
Enables 4K, 5K, and high-refresh-rate panels over a compact interface. 2. Core Enhancements in eDP 1.4 The Embedded DisplayPort (eDP) v1
ALPM works in tandem with PSR2. It allows the main interface link to wake up from its low-power sleep state much faster and with less protocol overhead. This rapid transition ensures that the user experiences zero lag or stutter when transitioning from a static screen to an active one. 4. Multi-SST Operation (MSO)
Splitting the display interface to drive segmented panel architectures. such as 4K and beyond
The 1.4 revision introduces several advanced features optimized for mobile systems where battery life and display performance are critical metrics. 1. Panel Self-Refresh (PSR) and PSR2 Panel Self-Refresh is a cornerstone power-saving feature.
The Embedded DisplayPort (eDP) 1.4 specification represents a critical milestone in the evolution of display interfaces for portable and integrated computing devices. Published by the Video Electronics Standards Association (VESA), this standard was specifically engineered to meet the growing demands of high-resolution displays, such as 4K and beyond, while drastically reducing power consumption and system cost.