Why my iPhone 5 screen has weird screen display?

Hi!

I've been experiencing really crazy screen problem with my iPhone!

Suddenly, out of the blue, my screen changed to black and white vertical lines. I did some researched, and did the rebooting. It failed, and I did several more times. Then, the screen displayed red and white vertical lines, and the Apple logo was gone. When I switched it off and on again, the apple logo wasn't visible, but I know it still worked because I could get incoming calls and was able to call, too. I just turned it off and left it like that for few days, and when I turned it on, the screen went super dark, but I could see the screen, like the apps and all the display although it looked super dim as if I turn the brightness to zero. Again, I switched it off and left for few days. (I currently stayed in a very small city and nobody has iPhone here, like literally. So I can't go and fix it or whatever) I connected it to iTunes, updated it, and left it again. When I switched it on again, I can see the screen and it's quite visible but there are bluish, whitish, vertical lines. I can see the display but the bright lines really annoys me. I really wonder, is this software or hardware problem? DO I really have to get it fixed? Not that I don't want but there's no any iPhone service center here. Can't even find any shop that sells iPhone casing, let alone some repair shop.. Is there really no solution? I am so desperate now.. Thanks a lot!