LG Display has introduced a 5-inch full HD LCD panel for smartphone displays -- the highest resolution mobile panel to date, the company said on Monday.

The widescreen panel is based on AH-IPS (Advanced High Performance In-Plane Switching) technology and has a 1920-by-1080 pixel resolution or 440 pixels per inch (ppi), according to LG.

That compares to Apple's Retina display, which has 264 ppi on the new iPad and 326 ppi on the iPhone 4S.

With the 16-by-9 aspect ratio, the panel is also 0.5 inches larger, and 2.2 times denser in pixels compared to the preceding 4.5-inch panel at 329 ppi and a 1280-by-720 pixel resolution, according to LG Display.

The latter resolution has become a standard on current high-end smartphones like the HTC One X, Samsung's Galaxy S III and the LG Optimus 4X HD.

The panel is expected to be released during the second half of this year