It has taken way too long for the display panel makers to embrace the eDP or embedded DisplayPort standard, but it looks like CPT is finally moving its higher-end notebook panels away from the aging LVDS standard in favour of eDP. At Display Taiwan the company was showing off a pair of new notebook displays with HD+ resolution, or 1600×900 pixels for those that count, both using an eDP interface.
The larger of the two is a 13.3-inch panel with viewing angles of 160/140 degrees (H/V), a brightness of 300 nits, a contrast ratio of 400:1, but sadly a colour gamut of only 45 percent and a response time of 16ms.
The smaller 12.1-inch model features a higher contrast ratio of 500:1, but a slower response time of 20ms and poorer viewing angles of 90/50 degrees (H/V). As for the rest of the specs, CPT didn’t provide any details as this model has as yet to launch.
It’s surprising that the response time on these two TN panels is so poor compared to what you see on desktop displays, but it has nothing to do with the actual panel interface. eDP will in fact allow notebook manufacturers to produce more affordable laptops, as fewer wires are needed to connect the display to the graphics on the motherboard. This also means less complex hinge designs for a regular notebook design.
On top of that, it would also allow notebooks with Intel’s Ivy Bridge processors to connect up to two external displays, whereas an Ivy Bridge notebook with an LVDS panel could only be used with one external display due to limitations with regards to how Intel handles the display interfaces.
Kitguru says: eDP is by no doubt the future for notebook displays, but 1600×900 resolution is already yesterday’s news.