![]() Panels capable of supporting eDP v1.4b are now in production, and eDP v1.4b will be enabled in 2016 notebooks. Called eDP v1.4b, this new version puts the finishing touches on the eDP v1.4 Standard that was released in February 2013. VESA recently announced an update to the eDP Standard. eDP also includes unique features to better manage system power for longer battery life, and lower EMI and RFI thereby reducing the need for heavy and bulky shielding.įigure 1: At display resolutions beyond Full HD (1920×1080) or Full HD+ (1920×1200), eDP has a significant advantage over LVDS in minimizing the number of high-speed wire pairs needed in the display interface, which in turn results in reduced total system footprint. The higher bit rate also enables higher resolution, color depth and frame rate. Running at a much higher bit rate, eDP also reduces the number of wires in the interface as well as the number of pins for the interface (Figure 1). This is because the DC-coupled, high-voltage swing interfaces in use today, including LVDS, DVI, and HDMI, require either the use of external interface chips or process changes that compromise performance. As process geometries continued to shrink, a new lower-voltage AC-coupled interface was needed to continue integrating the high-speed display interface into the GPU or system chip. Foremost among these was hardware integration. The development of both DisplayPort and eDP was driven by a variety of computing needs. Designed to replace the internal LVDS display interface developed in the mid 1990s, eDP is used in virtually all new computers with an internal display, including laptops, all-in-ones, and many high-end, higher-resolution tablets. DisplayPort itself continues to gain momentum and is now moving onto tablets and phones as a supporting feature of the new USB-C connector in the form of “DisplayPort Alt Mode.” Like DisplayPort, eDP also offers display resolutions beyond 4K. DisplayPort is the high-performance external audio/visual (A/V) interface developed and deployed by the personal computer industry through collaboration within VESA, providing display resolutions of 4K and beyond. What does eDP stand for? Embedded DisplayPort, commonly known as eDP, is based on the VESA DisplayPort Standard. These are the types of refinements addressed by the latest revision to the VESA (Video Electronics Standards Association) Embedded DisplayPort Standard. But “better” can also be one that uses less power to extend battery life, interferes less with wireless service to enable better coverage, and improves chip integration to enable sleeker, lighter-weight system designs. A “better” display is normally equated to more pixels per inch driven by a multi-core GPU that supports high-resolution rendering. Video quality improvements are one example. Such advances are often driven by technology hidden from the consumer, behind the sleek industrial design and elegant user interface. Today’s personal electronic devices continue to get smaller and easier to use, with more performance and functionality.
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