Liquid crystal light valve and preparation method thereof

Abstract

The invention belongs to the technical field of a liquid crystal device. In order to provide a high-resolution liquid crystal light valve and a preparation method thereof, the liquid crystal light valve provided by the adopted technical solution comprises a first glass substrate and a second glass substrate which are oppositely arranged, wherein a first transparent conducting thin film layer and a second transparent conducting thin film layer are arranged on the opposite side faces of the first glass substrate and the second glass substrate respectively; a photosensitive layer, a light-stopping layer, a medium reflector, a first alignment layer, a liquid crystal layer and a second alignment layer are further sequentially arranged between the first transparent conducting thin film layer and the second transparent conducting thin film layer; the photosensitive layer is a photosensitive layer in a nanometer structure, which is made of an a-Si:(CdTe):H composite material; the composite material comprises CdTe and a-Si:(CdTe), wherein the CdTe is 7% in content. A less amount of the CdTe is mixed into an a-Si:H thin film to form the a-Si:(CdTe):H composite material; the material is used as the photosensitive layer of the liquid crystal light valve, so that the migration rate of semiconductor materials of the photosensitive layer is improved, the response time is shortened, the resolution ratio and the light sensitivity of the liquid crystal light valve can be improved, and the response spectrum is widened. The technical solution is applicable to the existing reflection type liquid crystal light valve.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal devices, and relates to a liquid crystal spatial light modulator and a preparation method thereof, in particular to a liquid crystal light valve whose photosensitive layer is a-Si:(CdTe):H composite nanostructure and a preparation method thereof. Background technique [0002] A liquid crystal spatial light modulator (SLM, Spatial light modulator) is an optoelectronic device used to modulate the intensity, phase, and polarization state of light waves. Due to its high birefringence, wide bandwidth and low operating voltage, liquid crystal spatial light modulators have been widely used in the fields of display and photonics, such as time-multiplexed dynamic scanning 3D movie display, adaptive optical wavefront Correction or as a diffractive optical element for spectral filtering, etc. According to the different ways of input control signals, liquid crystal spatial light modulators can be divi...

AI Technical Summary

Problems solved by technology

In the prior art, the material of the photosensitive layer of the liquid crystal light valve is a single optoelectronic semiconductor material, such as: CdS, c-Si, BSO, GaAs or a-Si:H, but the above photosensitive layer materials have shortcomings such as long response time and insufficient mobility. However, the resolution of the liquid crystal light valve is affected, so it is difficult to meet the requirements of the photosensitive layer of the high-resolution liquid crystal light valve.

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