LIQUID CRYSTAL DISPLAY DEVICE

PROBLEM TO BE SOLVED: To suppress decrease in transmittance in a wide observation angle range along a horizontal direction of a display screen.SOLUTION: A liquid crystal display device is provided, including a first substrate, a second substrate, a first electrode, a second electrode, and a liquid crystal layer having monodomain vertical alignment and a pretilt angle of less than 90°. A display part is constituted in a region where the first electrode and the second electrode overlap in a plan view. At least one of the first electrode and the second electrode has at least one opening disposed in the display part. The opening has a first branch and a second branch, in which a longitudinal direction of each branch is different from the other, one end of each branch is bonded to the other, and the end side where the first branch and the second branch are bonded is laid as oriented in the substantially same direction as an alignment direction of liquid crystal molecules. A first angle formed by the first branch and an alignment direction of the liquid crystal molecules in substantially the middle in a layer thickness direction of the liquid crystal layer, is equal to a second angle formed by the second branch and the alignment direction of the liquid crystal molecules in substantially the middle in the layer thickness direction of the liquid crystal layer; and the sum of the first angle and the second angle is larger than 45° and equal to or smaller than 80°. 【課題】表示面の左右方向における広い観察角度の範囲で透過率の低下を抑える。【解決手段】第１基板、第２基板、第１電極、第２電極並びにプレティルト角が９０?未満であるモノドメイン垂直配向の液晶層を含み、第１電極と第２電極が平面視で重なる領域において表示部が構成され、第１電極又は第２電極のいずれかは表示部内に配置される少なくとも１つの開口部を有し、開口部は、平面視において、各々の長手方向が互いに異なる方向であり各々の一端が結合した第１枝部及び第２枝部を有し、かつ第１枝部と第２枝部の結合した一端側を液晶分子の配向方向と略同じ方向へ向けて配置されており、第１枝部と液晶層の層厚方向の略中央における液晶分子の配向方向のなす第１角度と第２枝部と液晶層の層厚方向の略中央における液晶分子の配向方向のなす第２角度が等しく、かつ、第１角度と第２角度の和が４５?より大きく８０?以下である、液晶表示装置。【選択図】図１