Stereoscopic three-dimensional display based on polarization-switching device with low cross talk and high contrast ratio

Abstract

We present a polarization-switching device with dual-frequency liquid crystal material for a stereoscopic three-dimensional (3D) display. This device shows good properties, such as low 3D cross talk and high brightness, due to a fast dynamic response time. Without optical compensation, however, this device has an asymmetric contrast ratio on the left- and right-hand sides of 3D glasses, because the viewing principles on both sides are different from each other. To solve this problem, we design an optical structure with two half-wave plate films using the Jones matrix method. As the results of simulation and experiment show, excellent dark states and high brightness are realized over the entire range of visible wavelengths on both sides.

Crosstalk elimination in multi-view autostereoscopic display based on polarized lenticular lens array

“…The polarization direction of the incident image lights does not change and changes by 90 • with respect to the initial direction after passing through the zero and λ /2 optical retardation, respectively. [26][27][28] Therefore, the polarization direction of the incident image lights from the first row of subpixels corresponding to the view 2, view 4, view 6, and view 8 is still horizontal direction after passing through the striped halfwave plate because the optical retardation of the striped halfwave plate panel is zero, as shown in Fig. 7(b).…”

Fast polarization switching panel with high brightness and contrast ratio for three-dimensional display

“…Many researchers have made various efforts to develop 3D displays with twodimensional ͑2D͒/3D switching, high brightness, and high resolution. [1][2][3][4][5][6][7][8][9] Among these technologies, the stereoscopic 3D display using 3D glasses has attracted industrial attention because it has neither the loss of spatial resolution nor the 3D moiré effect between pixels and barrier. Moreover, the stereoscopic 3D technology is suitable for realizing 2D/3D switching easily.…”

“…The glass-type 3D displays are divided into passive retarder type using patterned retarder film 5 and active retarder type using either liquid crystal ͑LC͒ shutter glasses 6,7 or polarization switching ͑PS͒ panels. 8,9 However, active retarder type with LC shutter glasses has poor brightness in the 3D mode because of the slow response time and writing speed of the LC panel and shutter glasses. Moreover, the shutter glass is too heavy and uncomfortable due to the presence of batteries, for an active operation.…”

“…To overcome these limits, we suggested a 3D-PS using dual-frequency LC and two half-waveplate ͑HWP͒ films. 9 However, it still has problems such as decrease in brightness due to the two HWPs, low CR under 200:1, and low cell gap under 3 m. Hence, it is difficult to commercialize this technology.…”

“…In previous 3D-PS, 8,9 the transmission axes ͑TAs͒ of the right-and left-hand sides of the polarization glasses are orthogonal to each other, and optical films are attached on the PS panel. Thus, the optical film influences the optical properties of not only the left-hand side, but also the right-hand side.…”