Patent ID: 8502943

Claim:
A liquid crystal display (LCD) device, at least having a display area, comprising: a first substrate with a common electrode; a second substrate with at least one pixel unit, wherein the pixel unit has a pixel electrode, wherein the pixel electrode comprises a plurality of trunk electrodes, a plurality of branch electrodes and a plurality of sub-branch electrodes, parts of the branch electrodes are connected to one of the trunk electrodes, and parts of the sub-branch electrodes are connected to one of the branch electrodes; a liquid crystal (LC) layer, disposed between the first substrate and the second substrate, wherein after being driven by a voltage, the LC molecules of the LC layer form a continuous-domain alignment; a first polarizer, disposed above the first substrate; and a second polarizer, disposed below the second substrate and having a polarization axis perpendicular to a polarization axis of the first polarizer, wherein the LC layer is doped with chiral dopants and selects optimal Δnd and d/p parameters, so that as α is at any angle, the transmittance T is always greater than a minimal transmittance T min , where Δn is a birefringence of the LC material, d is a thickness of the LC layer, p is a pitch of the chiral dopants, α is defined to be an angle included between an alignment direction of LC molecules in the middle LC layer and a polarization axis of one polarizer.