Toshiba Mobile Display Co Ltd (TMD) boasted three types of three-dimensional (3D) displays at an academic conference called SID Display Week 2009 which was held from May 31 to June 5, 2009, in Texas.
One of the three (3D) displays is based on the integral imaging system that utilizes a lens array to allow viewers to see 3D images with the naked eye. This display has been presented by TMD at several exhibitions in various locations.
The remaining two types were exhibited for the first time, according to TMD. They are (1) the “Time Sequential Autostereoscopic 3D OCB Display,” which provides the same level of resolution even if it is viewed with the naked eye and (2) the “Crosstalk-free 3D Display,” which is viewed using glasses equipped with liquid crystal shutters.
The two 3D displays are based on the OCB (optically compensated bend) technology developed by TMD. This technology is intended for small LCD panels that feature a moving picture response time (MPRT) as short as 3ms.
Besides the OCB technology, TMD realized stereoscopic viewing with the naked eye for the 3D display described in item (1) by applying a special film manufactured by 3M Co of the US to the inner surface of its panel. This special film functions to send images to the left and right eyes at different angles.
With this method, the “effective resolution” of 3D images normally decreases to about half the resolution of the panel. But TMD divided the backlight LEDs into right and left parts and mounted one on either side of the panel so that the LEDs light up alternately via a light guide plate. As a result, the images for the right eye and those for the left eye are displayed in turn, preventing the deterioration of the resolution.
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