unity3d – How can I Create 3D Billboard Curved Screen Using Unity?

I want Create Digital Signage like this picture for 3D Billboard Curved Screen using Unity.

I found method for make that.

1. Renders the camera at a three-dimensional angle.
2. Map the rendered image once to a screen object in the camera position.
3. Burn the image mapped to the screen object.

However, I have to use Unity, and I couldn’t find a way to run the following process other than Blend.

There are how to make 3d Billboard Curved Screen using Blender.

I have to use Unity, so I want to know how to proceed with the above process with Unity.