Liquid crystal raster, manufacturing method and driving method thereof and optical phase array device

Abstract

The invention discloses a liquid crystal raster, manufacturing method and driving method thereof and optical phase array device. A plurality of first electrodes are formed on a lower substrate, first gaps are formed between adjacent first electrodes, second electrodes are further arranged above the first gaps, second gaps are formed between adjacent second electrodes, and an insulation layer is arranged between the first electrodes and the second electrodes. When a voltage is loaded on the first electrodes and the second electrodes, an electric field changing continuously, smoothly and slowly is generated in the liquid crystal raster, therefore, the phase positions of incident light can be controlled continuously, smoothly and slowly, and the modulation capability of the liquid crystal raster to light beams is improved directly.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a liquid crystal grating, a manufacturing method, a driving method and an optical phased array device. Background technique [0002] The core device of the Liquid Crystal Optical Phased Array (LCOPA) device is a liquid crystal grating with electrodes arranged in parallel. A voltage is applied between the parallel electrodes, so that an electric field is formed between the parallel electrodes, and the deflection of the liquid crystal is controlled by the electric field. [0003] figure 1 It is a structural schematic diagram of a liquid crystal grating in a liquid crystal optical phased array device in the prior art, figure 2 for figure 1 A schematic diagram of the electric field equipotential lines inside the liquid crystal grating shown in, image 3 for use figure 1 Phase plot of incident light controlled by a liquid crystal grating shown in . Such as Figure 1 to Figure...

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Problems solved by technology

[0006] In summary, due to the discontinuity of the electrodes on the lower substrate, when a voltage is applied to the electrodes, the electric field in the spaced area will drop, so that the electric field inside the liquid crystal grating cannot be continuously and smoothly changed, and the existing liquid crystal grating Continuous and smooth control of the phase of incident light is not possible

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