The Video Electronics Standards Association (VESA) has issued the latest version of the Embedded DisplayPort (eDP) standard. eDP version 1.2 offers several enhancements to the original standard release, including increased simplicity and improved performance capabilities. Notebook PCs using the new eDP standard will begin production the first half of 2011.
Major updates in the eDP standard include cable simplification, reduced system power consumption, new display capabilities, 5.4Gbps link rate option and simplified PC chip integration. By lowering the number of required internal cables and interconnect signals, the eDP notebook panels offer simplified internal cabling and significantly reduced power consumption. A bidirectional AUX Channel further reduces the wire count while adding new LCD panel control and backlight capabilities, including dynamic backlight control, dithering, modulation frequency control and more. Data bandwidth for video data channels has also been doubled with support for the 5.4Gbps link rate defined by DisplayPort v1.2. This increased link rate allows for either fewer wires or full HD resolution of higher performance 2D or stereo 3D displays. Finally, eDP’s use of low-voltage, AC-coupled signaling is compatible with today’s sub-micron chip processes, simplifying overall design and reducing the required number of device pins.
eDP v1.2 is another step towards eDP’s eventual replacement of the Low Voltage Differential Signaling (LVDS). Notebooks featuring the eDP v1 interface, which began entering the market this year, will account for 11 percent of the 2010 PC market. eDP is projected to largely replace LVDS by 2013.