Last month Samsung said that it will launch smartphones with curved display in October.
The technology offers better picture quality than LCD, with crisper picture resolution, faster response times and high-contrast images.
Some analysts feel that the company is trading margins for volumes.
The original S4, which hit the 10 million-sale mark last week to become Samsung's fastest selling smartphone, has a bigger 5-inch full high-definition screen and a 13-mega pixel camera.
The figures make it the fastest selling smartphone.
The Samsung device will perform many of the tasks of a smartphone.
The lawsuit was unlikely to have deprived Lee of his control over Samsung Electronics, the world's biggest maker of smartphones, TVs and memory chips.