Patent ID: 8624867

Claim:
A liquid crystal display device comprising: a liquid crystal panel including, (A) a first substrate, (B) a second substrate opposite to and spaced from the first substrate, (C) a color filter having a first plurality of grooves spaced from each other along a surface of the color filter; and (D) a liquid crystal layer provided in a space between the first substrate and the second substrate, the liquid crystal layer having a built-in touch sensor switch in a display area operable to cause an image to be displayed by the liquid crystal panel, the touch sensor switch including (i) a first touch electrode provided on a surface of the first substrate facing the second substrate, and (ii) a second touch electrode provided on a surface of the second substrate facing the first substrate and spaced from and facing the first touch electrode, wherein, the first touch electrode and the second touch electrode are operable to contact each other when the liquid crystal panel is deformed by an external pressure, liquid crystal molecules in the liquid crystal layer are oriented by (i) a first liquid crystal orientation film provided on the surface of the first substrate facing the second substrate and (ii) a second liquid crystal orientation film provided on the surface of the second substrate facing the first substrate, the first touch electrode is provided on the surface of the first substrate facing the second substrate and covering a surface of a concave and convex area of an inter-layer insulating film, the concave and convex area including a second plurality of grooves spaced from each other along the concave and convex area, the second plurality of grooves being complementary to the first plurality of grooves in the surface of the color filter, and the surface of the first touch electrode includes an orientation material, the orientation material exposing a top face of a convex part of the concave and convex area in the first touch electrode.