Preparation And Performance Oftransparent Display Film Based On Nanostructure

Transparent display technology has been developed rapidly in recent years because of its characteristics of transparent display panel and its potential applications in many fields.The realization and application of transparent display has attracted the interest of researchers.Its biggest characteristic is that it has transparent display screen.Ordinary glass can also display product information;Even glasses can be used to display all kinds of information.Examples include head-up Display（HUD）,Head Mounted Projection Display（HMPD）and Floating Display.These technologies have attracted more and more attention and gradually become the trend of modern display technology development.Especially now has entered the fifth generation of mobile communication technology era,with the continuous development of "5G" and "AR",transparent display technology will make the display information become more intuitive,rich and intelligent,its application prospects will be very wide.At present,transparent displays on the market are either based on electroluminescence,or limited in screen brightness,viewing Angle and other aspects,which are difficult to be used in large areas or portable applications.In view of the limitations of existing products,this paper innovated a color transparent display based on the isoplasmon resonance and coupling effect of silver nanoparticles.The Mie scattering theory is used to optimize the design of silver spherical particles.It is found that the silver spherical particles with radius of about 25 nm have obvious scattering resonance mode in blue wavelength,and the scattering is much greater than the absorption.Furthermore,Comsol numerical simulation software was used to simulate the scattering spectra of multiple silver spheres.It was found that three scattering peaks appeared in the red,green and blue bands,which could be used to enhance the performance of color display.In addition,it is found that under the action of isoplasmon resonance and coupling,silver particles have the far-field scattering morphology of dipoles in the three resonance positions of red,green and blue,which fully explains the reason for the bright and wide viewing Angle of the display screen.In order to enhance the brightness of the display,a transparent display based on dielectric nanoparticle electromagnetic resonance triple directional scattering is proposed.Through Mie scattering theory,the simulation and comparison of a series of dielectric nanoparticles of magnetic resonance characteristics,it is found that the radius of 175 nm TiO₂ and SiC dielectric nanoparticles,in the red,green,blue three bands have high forward scattering characteristics,can most of the visible light local to the side of the display,and in the laboratory through solution thermal method to obtain a transparent display.Compared with the nanostructures that support only single LSP resonance,it is found that the display brightness and color display are significantly improved.Through simulation,discussion and experiment,the transparent display prepared in this paper has a front and back scattering range of ±30°～±45°,which can significantly broaden the viewing Angle of the observer.The screen signal light brightness is high,the overall screen transmittance is high,and the screen does not need electroluminescence,only use a tiny projector can realize the color transparent display,greatly enrich the application scene,provides a new idea for the realization of high transmittance,high brightness color transparent display.