LCD full-year free maintenance of what brand?

The only thing I know, there are AOC.Three-wide free of charge.
Samsung is the security one year, but the Zhongguancun only security dark, bright spot was not guaranteed that totally unacceptable.
Please recommend a few three-wide Free brand.

ViewSonic
ViewSonic's good after-sale recommendations
ViewSonic AOC ASUS also be three years The Oh? Bright spot of OZ.