Liquid crystal display device

A liquid crystal display device comprising, in order:

• a first substrate including gate lines, source lines, nonlinear elements arranged corresponding to intersections of the gate lines and the source lines, a first electrode, and a second electrode;
• a first alignment film;
• a liquid crystal layer containing liquid crystal molecules;
• and
• a second substrate,
• the gate lines extending in a first direction,
• the source lines extending in a second direction which intersects the first direction,
• the first electrode and the second electrode at least partially facing each other across an insulating layer,
• one electrode of the first electrode and the second electrode being connected to a source line corresponding to the one electrode via a nonlinear element corresponding to the one electrode among the nonlinear elements,
• the second electrode being provided with an elongated opening,
• the first substrate including a step portion extending in a third direction on a surface closer to the first alignment film,
• an angle α, defined in a plan view as an angle between the third direction and an alignment direction of liquid crystal molecules located near the first alignment film and within a central portion of the opening with no voltage applied, being greater than 0° and less than 90°,
• a parameter P being 0.77 or less, as calculated based on the angle α, a taper angle β of the step portion, and a contact angle θa of the first alignment film with respect to pure water, in accordance with the following Equation (1):
• P
• =
• (
• θ
• a
• /
• 90
• ⁢
• °
• )
• ×
• {
• 1
• +
• 2
• ⁢
• sin
• ⁢
• (
• α
• )
• ×
• cos
• ⁢
• (
• α
• )
• }
• ×
• sin
• ⁢
• (
• β
• )
• (
• 1
• )
• wherein when the taper angle β exceeds 90°, β in Equation (1) is set to 90°.