Liquid crystal display device

A liquid crystal display device, comprising:

• a first substrate and a second substrate;
• a liquid crystal layer having liquid crystal molecules interposed between the first and second substrates;
• a common electrode disposed at an inner surface of the first substrate;
• a pixel electrode disposed at an inner surface of the second substrate;
• and
• a plurality of pixel regions, each of the pixel regions defining a reflection region and a transmission region, the pixel electrode in the reflection regions being configured as reflection electrodes, and the pixel electrode in the transmission regions being configured as transmission electrodes;
• wherein a thickness of the liquid crystal layer in the reflection regions is less than a thickness of the liquid crystal layer in the transmission regions;
• a pre-tilt angle of liquid crystal molecules adjacent to one of the substrates is in the range from 0° to 15°, and a pre-tilt angle of liquid crystal molecules adjacent to the other substrate is in the range from 75° to 90°;
• and
• the reflection electrodes and the transmission electrodes each have an uneven surface, thereby defining a plurality of bumps.

A liquid crystal display device, comprising:

• a first substrate and a second substrate;
• a liquid crystal layer having liquid crystal molecules interposed between the first and second substrates;
• a common electrode disposed at an inner surface of the first substrate;
• a pixel electrode disposed at an inner surface of the second substrate;
• and
• a plurality of pixel regions, each of the pixel regions defining a reflection region and a transmission region, the pixel electrode in the reflection regions being configured as reflection electrodes, and the pixel electrode in the transmission regions being configured as transmission electrodes;
• a pre-tilt angle of liquid crystal molecules adjacent to one of the substrates is in the range about 0° to 20°, and a pre-tilt angle of liquid crystal molecules adjacent to the other substrate is in the range about 70° to 90°;
• and
• a passivation layer is disposed at one of the substrates, in areas corresponding to the reflection regions, and the passivation layer have an uneven surface thereby defining a plurality of bumps.