The present disclosure discloses an array substrate arranged opposite to a color filter substrate, the array substrate includes a first substrate, a data line, a spacer protruding from the first substrate, a light-shielding electrode located on a side of the data line away from the first substrate, wherein the light-shielding electrode includes a main section and a protruding section, the vertical projection of the main section on the first substrate covers the data line, the protruding section is stacked on the spacer, and the protruding section contacts the color filter substrate. The present disclosure further discloses a liquid crystal display panel and a liquid crystal display device. The influence of the high and low potential signals on the main section of the light-shielding electrode on the data line is reduced, the light-shielding electrode works normally, the product yield is high, and the production cost is saved.