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Visual perception and storage device and its preparation method and application

A technology of visual perception and storage devices, applied in the field of virtual reality, can solve problems such as low resolution, inability to store and remember, poor accuracy, etc.

Active Publication Date: 2021-05-11
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some current visual analog electronic devices have the ability to distinguish some specific graphics in real time, they still have many limitations, such as low resolution, weak light sensitivity and poor accuracy.
Most importantly, no research has been able to truly simulate the visual system, because they can only perceive changes in external light. When the light disappears, this perception quickly fades away, and cannot use this information like human vision. The system stores and memorizes

Method used

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  • Visual perception and storage device and its preparation method and application
  • Visual perception and storage device and its preparation method and application
  • Visual perception and storage device and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1 Preparation and Performance Testing of Visual Perception and Storage Devices

[0039] (1) Preparation of the resistance switching memory 1: by photolithography and atomic layer deposition technology, a layer such as figure 1 The gold electrode 4 in the middle, and then on the gold electrode at one end, deposit a layer of aluminum oxide memristive layer 5 with a thickness of 23 nanometers in situ on the gold electrode at one end. deposition cycle. After the deposition is complete, a layer such as figure 1 The nickel electrode 6 in the memristor is used as the upper electrode of the memristor and the double-terminal electrode of the ultraviolet photodetector at the same time, and the obtained micrograph is as follows figure 2 shown.

[0040] (2) Preparation of photodetector 2: ① first prepare the precursor solution used for the photosensitive material: at room temperature, 0.5g hydrated indium nitrate (In(NO3 ) 3 4.5H 2 O) The powder is added to the mix...

Embodiment 2

[0042] Example 2 Preparation and Performance Test of 10×10 Flexible Array Visual Perception and Storage System

[0043] In order to improve the spatial resolution of the device, accurately perceive the distribution of light, and realize the simulation of the artificial vision system, a 100-pixel flexible integrated electronic device (such as Figure 7 ), the preparation method is similar to (1), (2) steps in Example 1, the difference is that: the number of nanofiber arrays in step (2) is set to 10, the photolithographic process used in step (1) The mask plate is a 10×10 array mask plate, and the patterned ultraviolet light used in the performance test is the ultraviolet light pattern generated by the laser passing through the electron diffraction element (DOE), and finally through the summary analysis of all unit device data , the visual effect simulated by matlab software is as follows Figure 8 shown.

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Abstract

A visual perception and storage device, comprising a resistance switching memory and a photodetector formed in two adjacent regions on the same substrate and connected in series, wherein the resistance switching memory includes a first electrode on the substrate, the a memristive layer on the first electrode and a second electrode on the memristive layer, the second electrode extending into the region of the photodetector; the photodetector includes all the The second electrode is a nanowire array formed of a photosensitive material on the second electrode, wherein the second electrode forms a double-terminal electrode structure in the region of the photodetector, and the two ends of the electrode are alternately arranged in a tooth shape. The device can not only perceive the external light information, but also store this information, so as to facilitate the extraction and reproduction of information at any time.

Description

technical field [0001] The invention belongs to the technical field of virtual reality, and relates to a visual perception and storage device, a preparation method and an application thereof. Background technique [0002] The sensory organs of the human body can not only perceive external stimuli, but also store such stimuli in the human brain, even after the stimuli subside, they can still retain the impression of this perception on the human body. Eyes, as the sensory organ used by individuals to receive most information in daily life, can distinguish the size, distance, color, light and shade, shape, surface smoothness and roughness of objects through the reflection of light on the surface of external objects, and Upload this information to the brain to generate visual perception. [0003] In the field of virtual reality, many scientists have started to simulate the visual system and made some progress [Nature, 2008, 454, 748; Adv. Mater., 2016, 28, 2201; Adv. Sci., 2016...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/146
Inventor 沈国震陈娣娄正陈帅
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI