Phase delay film and three-dimensional display device

Abstract

The present invention provides a phase delay film and a three-dimensional display device, and belongs to the display technology field. The phase delay film comprises a first substrate, a first polaroid and a phase selection layer clamped between the first substrate and the first polaroid. The phase selection layer comprises a plurality of delay areas and a plurality of non-delay areas, and each delay area and each non-delay area are arranged in the staggering mode. Each delay area comprises a full delay area, and a light beam penetrates a first substrate to access the full delay area, generates phase delay in the full delay area and satisfies a first preset condition. The light beam penetrates a first substrate to access the non-delay area and cannot generate phase delay in the non-delay area. The polarization direction of the first polaroid is perpendicular to or parallel to the polarization direction of the light beam penetrating the first substrate. The problem is effectively solved that the uneven light and shade phenomenon appears caused by large signal delay at different positions of a stripline electrode when a current liquid crystal slit grating is applied to a three-dimensional display device with a large size.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a phase retardation film and a stereoscopic display device. Background technique [0002] Among various stereoscopic display technologies, naked-eye 3D has become a hotspot in the research of stereoscopic display technology due to the convenience of not needing other auxiliary equipment and its advantages in application. The application of naked-eye 3D stereoscopic display devices in personal consumer Applications in commercial display fields such as monitors and advertising machines are gradually increasing. At present, the technologies of naked-eye 3D display devices mainly include columnar grating film technology, slit grating, liquid crystal lens and so on. [0003] Existing liquid crystal slit gratings generally use strip electrodes, and the liquid crystal layer has different refractive index distributions by applying voltages to the strip electrodes. However, the strip e...

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Problems solved by technology

However, the strip electrodes are usually made of indium tin oxide (Indium Tin Oxides, ITO) conductive glass, which has relatively high impedance. The signal delay of the signal causes the light and dark stripes formed after the light beam passes through the liquid crystal slit grating to be uneven, thus affecting the stereoscopic display effect

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