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Naked eye 3D display material and preparation method thereof

A display screen and 3D technology, applied in the field of naked-eye 3D display, can solve the problems of poor controllability of light scattering angle, poor uniformity of light intensity distribution, dependent processing accuracy, high processing cost, etc., to achieve good uniformity of light intensity distribution and easy operation , low cost effect

Active Publication Date: 2021-06-08
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to the high processing cost caused by expensive equipment, complicated process, and template damage, the more critical point is that the processing accuracy depends on the speckle size, the controllability of the light scattering angle, and the light intensity distribution. poor uniformity

Method used

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  • Naked eye 3D display material and preparation method thereof
  • Naked eye 3D display material and preparation method thereof
  • Naked eye 3D display material and preparation method thereof

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preparation example Construction

[0022] Specifically, according to some embodiments of the present invention, a method for preparing a naked-eye 3D display material is provided, including the following steps:

[0023] (1) Provide a polymer solution in which a matrix material is dissolved in a volatile solvent, wherein the matrix material is an optically transparent material, and the volatile solvent is immiscible with water.

[0024] Preferably, the naked-eye 3D display material adopts an optically transparent homopolymer or copolymer as a matrix material, such as polystyrene-butadiene-styrene block copolymer (SBS), polycarbonate (PC), polyethylene Imine (PEI), polymethyl methacrylate (PMMA), etc. More preferably, it is SBS, which has the advantages of good film-forming performance, uniform microstructure size of the obtained display screen material, and wide adjustable range. As a further preference, the volatile solvent is one or more of carbon disulfide, methylene chloride, chloroform and toluene.

[002...

Embodiment 1

[0043]First select silica glass as the substrate, then weigh a certain amount of polystyrene-butadiene-styrene block copolymer (SBS) and dissolve it in carbon disulfide, configure it into a 0.1g / mL SBS carbon disulfide solution, and then 0.2mL / cm in a closed container at 25°C and 80% relative humidity 2 The aforementioned solution is cast on the surface of the substrate, and the solvent volatilization promotes the nucleation and growth of water droplets on the solution surface, and the naked-eye 3D display material is obtained after the solvent and water droplets are completely volatilized. The size range of the radius d of the spherical pit on the screen surface is 25μm±2μm, and the size range of the depth h is 25μm±2μm. After testing, the light scattering angle of the screen is about 40°, the light transmittance is about 75%, and the light intensity evenly distributed. Such as image 3 Shown is the optical topography of the naked-eye 3D display, and it can be seen that it ...

Embodiment 2

[0045] First select silica glass as the substrate, then weigh a certain amount of polycarbonate (PC) and dissolve it in dichloromethane to form a PC dichloromethane solution of 0.14g / mL, and then place it at 20°C and 90% relative humidity In an airtight container at 0.3mL / cm 2 The aforementioned solution is cast on the surface of the substrate, and the solvent volatilization promotes the nucleation and growth of water droplets on the solution surface, and the naked-eye 3D display material is obtained after the solvent and water droplets are completely volatilized. The size range of the radius d of the spherical pit on the screen surface is 50μm±5μm, the size range of the depth h is 1μm±0.1μm, the light scattering angle of the screen is about 1°, the light transmittance is about 99%, and the light intensity distribution is relatively uniform.

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Abstract

A naked-eye 3D display material and a preparation method thereof, the method comprising the following steps: providing a polymer solution in which a base material is dissolved in a volatile solvent, wherein the base material is an optically transparent material, and the volatile solvent is immiscible with water; In a closed container with constant temperature and humidity, the polymer solution is casted on an optically transparent substrate, and the nucleation and growth of water droplets on the surface of the polymer solution are promoted through the volatilization of the volatile solvent; the optically transparent substrate cast with the polymer solution is placed in the Stand still in a closed container with constant temperature and humidity. After the volatile solvent and water droplets are completely volatilized, a microstructure of spherical pits left by water droplets is formed on the surface of the base material, and the naked-eye 3D display material is obtained. The invention can regulate the light scattering angle of the display screen material in a wide range, has higher light transmittance, better uniformity of light intensity distribution, simple preparation process, and can be applied to a holographic 3D display system.

Description

technical field [0001] The invention belongs to the technical field of naked-eye 3D display, and in particular relates to a naked-eye 3D display material and a preparation method thereof. Background technique [0002] Nature presents things to humans in a true three-dimensional form, and visual information can vividly reflect the characteristics of things. However, the current mainstream display method is flat two-dimensional display, which loses the depth information of real three-dimensional objects and limits people's correct cognition of objective objects. Therefore, various types of three-dimensional (3D) display technologies emerge as the times require and has been fully developed. [0003] 3D display is mainly based on the difference in images seen by people's left and right eyes, and the three-dimensional depth perception is generated through brain fusion processing. The current 3D display technology is generally a wearable display, and people need to wear correspo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/28C08L53/02C08L69/00C08L79/02
CPCC08J9/28C08J2201/0502C08J2353/02C08J2369/00C08J2379/02
Inventor 李卫平陈永俊陈海宁刘慧丛
Owner BEIHANG UNIV
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