This paper will describe the implementation of a 3D film method for achieving full resolution autostereoscopic 3D displays in handheld and portable devices. The three components of this technology ‐ a directional backlight, 3D Film and a 120Hz LCD panel ‐ will be described. Modeling and experimental device performance using OCB LCD panels will be reviewed along with 3D visualization performance.
Novel photoconductive polyimides have been developed, whose monomer units are composed of a series of thiophenylene moieties, -C6H4S-, and imide groups. The most photosensitive polyimide shows an excellent photosensitivity of less than 1.0 μJ/cm2 in the visible light region, 400–570 nm. These photosensitive polyimide films are prepared by polymerizing the cast prepolymer films and annealing at the melting points of the polyimides. In this process their photosensitivities remarkably increase with the increase of crystallinity. From the structural studies by ultraviolet visible absorption, x-ray diffraction, infrared absorption, and x-ray photoelectron spectroscopy measurements, it is proposed that the coplanary conformation takes place in the crystallizing. The overlapped π orbitals, perpendicular to the polymer chains, lead to the more expanded conjugate system.
OCB-LCD has fast response characteristics. In particular, the response time toward black state is less than 1 msec. It enables us to insert a black period between continuous two frames to make "pseudo-impulse" response on LCD. Subjective evaluation is carried out to clarify the effect of the black period. Viewing angle characteristics are also investigated.
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