Patent ID: 9720266
Date: 2017-08-01
CPC Classifications: G02F

Claim:
1. An LCD (liquid crystal display) with switchable viewing angle, comprising: a first substrate being provided with a first electrode and a first alignment film thereon; a second substrate being provided with a second electrode, a third electrode and a second alignment film thereon, wherein one of the second electrode and the third electrode is a common electrode, and the other one of the second electrode and the third electrode is a pixel electrode; a liquid crystal layer being disposed between the first alignment film and the second alignment film, the liquid crystal layer comprising a plurality of liquid crystal molecules, wherein the liquid crystal molecules are negative liquid crystal molecules, the liquid crystal molecules adjacent to the first alignment film are tilted at a first pretilt angle, the liquid crystal molecules adjacent to the second alignment film are tilted at a second pretilt angle, the first pretilt angle and the second pretilt angle have the same magnitude but are contrary in direction; wherein when no bias voltage is applied to the first electrode, the LCD is displayed with a narrow viewing angle; and when a bias voltage is applied to the first electrode to generate a vertical electric field between the first substrate and the second substrate, the LCD is displayed with a wide viewing angle.