Infrared-visible light image up-conversion device based on semiconductor quantum dots and liquid crystal, and imaging method

Abstract

The invention discloses an infrared-visible light image up-conversion device based on semiconductor quantum dots and a liquid crystal, and an imaging method. The device sequentially comprises an uppersubstrate, a visible light shading layer, an infrared transparent electrode, a semiconductor quantum dot photoelectric active layer, a visible light reflecting layer, a liquid crystal upper orientation layer, a liquid crystal layer, a liquid crystal lower orientation layer, a visible light transparent electrode, a lower substrate, a polarizer and a visible light radiation source from top to bottom, wherein an alternating voltage signal is loaded between the infrared transparent electrode and the visible light transparent electrode, so that a bias electric field is constructed in the infrared-visible light image up-conversion device. An infrared detection structure and a liquid crystal display structure are integrated, the direct coupling of a detection unit to display pixels is realized,and an incident infrared image is directly converted into a visible light image; and a pixelated electrode is not needed during preparation, and a complex detection signal reading circuit and a display signal driving circuit are also not needed, so that the preparation process and the device structure are greatly simplified, and the preparation cost is reduced.

Description

technical field [0001] The invention relates to a method and system structure for infrared image detection and formation of visible light image display, in particular to an infrared-visible light image up-conversion device and imaging method based on semiconductor quantum dots and liquid crystals. Background technique [0002] Infrared detection and imaging have important applications in security monitoring, medical diagnosis, national security, and target guidance. Because the wavelength of infrared photons is beyond the sensitive area of ​​human eyes, human eyes cannot directly observe infrared images. In the process of infrared detection and imaging, it is necessary to use detectors or sensor arrays to convert the received infrared photon signals into electrical signals, and through signal transmission and information processing, the electrical signals are converted into visible light images through the display. [0003] At present, most commercial infrared detectors use...

AI Technical Summary

Problems solved by technology

Since the basic functional materials, basic device structures and fabrication processes of existing photodetection devices and photoelectric display devices are not compatible, it is impossible to integrate photodetection devices and photoelectric display devices on the same substrate

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