A 3D image display device includes: a liquid crystal (LC) display panel including, a first array substrate (AS) including a gate line (GL) extending in a first direction (FD), a data line (DL) extending in a second direction (SD) substantially perpendicular to the FD, and a pixel electrode (PE) connected to the GL and the DL and having first branch electrode portions (FBEPs) having a first width, each of the FBEPs being spaced from each other by a first interval substantially ≧the first width, and a LC lens panel including a second AS including lens electrodes (LEs) extending in a third direction (TD) tilted with respect to the SD by a first angle having an absolute value ≧about 5° and ≦about 15°. Each of the FBEPs extends in a fourth direction having a first tilting angle with respect to the TD by about 45° or about 135°.