A color filter substrate, an array substrate, a liquid crystal panel and a liquid crystal display device are disclosed. Said color filter substrate includes a plurality of pixel units, wherein said pixel unit comprises two diamond shaped sub-pixels and four isosceles triangle shaped sub-pixels, every two isosceles triangle shaped sub-pixels are arranged into a sub-pixel column with their vertex angles opposite to each other, and two sub-pixel columns are parallel to each other; said two diamond shaped sub-pixels and said two sub-pixel columns are disposed alternatively in horizontal direction; and colors of said diamond sub-pixels and the isosceles triangle shaped sub-pixels at least contains red, blue and green. The liquid crystal panel can enhance color reproducibility of the liquid crystal display panel and refinement degree of picture display and hence improving reality of picture display effect.