Patent ID: 7940358

Claim:
A liquid crystal display device comprising: a first substrate defining first to fourth subpixel regions, each subpixel region defining a reflection area and a transmission area; first to fourth thin film transistors formed in the first to fourth subpixel regions on the first substrate; first to third reflection electrodes electrically connected to the first to third thin film transistors, respectively, and formed in the reflection areas; first to third transmission electrodes electrically connected to the first to third thin film transistors, respectively, and formed in the transmission areas; a pixel electrode electrically connected to the fourth thin film transistor; a second substrate facing the first substrate; a color filter layer formed on regions of the second substrate corresponding to the first to third subpixel regions; a common electrode formed on an entire surface of the second substrate; at least one pattern formed long and across the fourth subpixel region on the second substrate; at least one protrusion formed on a portion of the second substrate that corresponds to the first to third subpixel regions on the second substrate; and a liquid crystal layer interposed between the first substrate and the second substrate, wherein the first to third subpixel are selectively driven in a reflection mode and a transmission mode using a first pixel electrode slit of the first substrate and the protrusion of the second substrate, the fourth subpixel is selectively driven in a wide viewing angle mode and a narrow viewing angle mode using a second pixel electrode slit of the first substrate and a rib of the second substrate.