Stereoscopic image display device

A stereoscopic image display device capable of functioning in a two-dimensional (2-D) image mode and a three-dimensional (3-D) image mode, the stereoscopic image display device comprising:

• a display device configured to display a first image data and a second image data in a time-dividing manner;
• a first driving unit configured to control the display device;
• a switchable retarder panel configured to control light emitted from the display device, and comprising electrically controlled birefringence (ECB) liquid crystals;
• a second driving unit configured to control the switchable retarder panel;
• and
• polarization glasses configured to pass or block the light emitted from the switchable retarder panel, based on a polarization of the light from the switchable retarder panel, the polarization glasses comprising:
• a left eyeglass, comprising:
• a half-wave plate;
• and
• a polarizer;
• and
• a right eyeglass comprising a polarizer,
• wherein the switchable retarder panel comprises:
• a common electrode in a front glass substrate, and
• scan lines in a rear glass substrate,
• wherein the switching off voltage comprises an equipotential as a common voltage supplied to the display device,
• wherein the switching on voltage comprises positive and negative polarity voltages with a potential difference with the common voltage supplied to the display device,
• wherein the scan lines are classified into a plurality of groups, and are in the rear glass substrate in a traverse stripe pattern,
• wherein the scan lines of the switchable retarder panel and gate lines of the display device are arranged in a same direction, and
• wherein a ratio of scan lines of the switchable retarder panel to the gate lines of the display device is 1:N, where N is an even number,
• wherein the display device is further configured to emit linearly polarized light,
• wherein a slow phase axis of the half-wave plate is set to be orthogonal to an off state of the switchable retarder panel, and
• wherein, when the switchable retarder panel is in an off state, light emitted from the switchable retarder panel is passed through only the left eyeglass, among the left eyeglass and the right eyeglass.

A stereoscopic image display device capable of functioning in a two-dimensional (2-D) image mode and a three-dimensional (3-D) image mode, the stereoscopic image display device comprising:

• a display device configured to display a first image data and a second image data in a time-dividing manner;
• a first driving unit configured to control the display device;
• a switchable retarder panel configured to control light emitted from the display device, and comprising electrically controlled birefringence (ECB) liquid crystals;
• a second driving unit configured to control the switchable retarder panel;
• and
• polarization glasses configured to pass or block the light emitted from the switchable retarder panel, based on a polarization of the light from the switchable retarder panel, the polarization glasses comprising:
• a left eyeglass, comprising:
• a half-wave plate;
• and
• a polarizer, and
• a right eyeglass comprising a polarizer,
• wherein the switchable retarder panel comprises:
• a common electrode in a front glass substrate, and
• scan lines in a rear glass substrate,
• wherein the switching off voltage comprises an equipotential as a common voltage supplied to the display device,
• wherein the switching on voltage comprises positive and negative polarity voltages with a potential difference with the common voltage supplied to the display device,
• wherein the scan lines are classified into a plurality of groups, and are in the rear glass substrate in a traverse stripe pattern,
• wherein the scan lines of the switchable retarder panel and gate lines of the display device are arranged in the same direction, and
• wherein a ratio of scan lines of the switchable retarder panel to the gate lines of the display device is 1:N, where N is an even number,
• wherein the display device is further configured to emit circularly polarized light,
• wherein, when the switchable retarder panel is in an off state, liquid crystals of the switchable retarder panel are set to be orthogonal to a slow phase axis of the switchable retarder panel,
• wherein each of the left eyeglass and the right eyeglass comprises a quarter-wave plate having a same tilt and a polarizer that are orthogonal to each other about an absorption axis, respectively,
• wherein the right eyeglass comprising a compensation plate has a same optical axis as the quarter-wave plate, and
• wherein, when the switchable retarder panel is in an off state, light emitted from the switchable retarder panel is passed through only the right eyeglass, among the left eyeglass and the right eyeglass.