Seon-Deok Hwang

10.4: Measuring of GraytoGray Crosstalk in a LCD Based TimeSequential Stereoscopic Display

A method of measuring stereoscopic crosstalk between left and right image pixels with arbitrary gray levels is proposed. The primary purpose of the method is to study LCD based timesequential stereodisplays, however the proposed method can be applied in studying and characterization of the other types of stereoscopic display. To test a method, a display, based on TN LCD panel, is examined. Noticeable variations of the crosstalk with the applied graygray input signals are demonstrated. It is also shown an asymmetry of the crosstalk, responsible for the light ghosting and a crosstalk, responsible for the dark ghosting.

34.2: Field Sequential LC Barrier for a Full Resolution Auto-stereoscopic 3D Display

In this paper, we have developed 15.6 inch auto-stereoscopic 3D display with a field sequential LC parallax barrier which shows the full resolution image of the panel even in the 3D mode. By field sequential switching of a barrier and an image panel, we can compensate the loss of the resolution in the LC barrier type 3D display. We also investigated the field sequential switching effect on the performance of the LC parallax barrier type 3D display.

Autostereoscopic display with a shifted LC barrier structure for a wide viewing zone

In this paper, we propose a shifted ITO electrode structure of a LC barrier for additional sweet spots in the auto-stereoscopic 3D display. The shifted ITO electrode is consisted of vertically inter-digital ITO electrodes both bottom and top electrodes. They are assembled with horizontally shifted by a half pitch. We can drive each electrode according to the viewer position. It gives an effect of varying the viewing zone. By doing this, we can widen the viewing zone with head tracking technique. It can give a viewer some freedom of viewing position with an image of high quality.

Development of Time-Multiplexed Autostereoscopic Display Based on LCD Panel

The main advantage of time-multiplexed stereoscopic display is that high-resolution stereoscopic images can be displayed using single monitor. In a time-multiplexed stereoscopic system left and right images of a stereopair consequently appear on the screen of 2-D display. The viewer is able to see the left and right images separately due to special shutter glasses or passive polarized eyeglasses combined with a polarization switch, sequentially occluding the left and the right eyes, thus preventing the viewer’s eyes from seeing wrong images. Since conventional 2-D images and components of the stereopair may be displayed with the same full resolution of the image panel, 2-D / 3-D switching of the display is potentially unnecessary. Both 3-D and 2-D content can be displayed on the same screen simultaneously. Time-multiplexed stereoscopic systems, utilizing polarization shutter glasses and polarization switchable screens are well-known and have been the objective of much research [1,2,3,4,5]. The shutter glasses system has two wearable optical switches, capable of switching their transparency thus blocking the left or right eye. The passive polarized eyeglasses system has one large (screen size) optical polarization switch switchable between two