Polymers dispersed liquid crystal light valve and method for making same

Abstract

The invention provides a polymer dispersed liquid crystal (PDLC) light valve which is composed of an upper substrate and a lower substrate which are made of a flexible material as well as a PDLC material layer which is arranged between the upper substrate and the lower substrate by press fitting. The press fit surfaces of the lower substrate and the upper substrate are respectively plated with a lower ITO electrode and an upper ITO electrode, the surface of the lower ITO electrode is coated and cured with an insulating layer, and the PDLC material layer is coated on the insulating layer; and the surface of the upper substrate is also cured with a photoresist gap filler for controlling thickness of a box. The invention also provides a fabrication method of the polymer dispersed liquid crystal light valve. In the method, the PDLC light valve is made of flexible substrates, which solves the problem of fragmentation of the substrates, greatly reduces the thickness of the light valve, and ensures uniformity and consistency of the thickness of a light valve box.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a polymer dispersed liquid crystal light valve and a manufacturing method. Background technique [0002] Polymer Dispersed Liquid Crystal (PDLC, Ploymer Dispersed Liquid Crystal) light valve is used as a new type of liquid crystal display technology in many fields. This liquid crystal display technology has more advantages than twisted and super twisted liquid crystal display technology. Since the PDLC light valve display adjusts the orientation of the optical axis of the liquid crystal particles in the film through the action of the electric field, and achieves the intensity of light scattering to display information, it does not require polarizers, and can achieve high-brightness, easy-to-flexibility, large-area wide-angle display . In addition, the PDLC light valve does not require a liquid crystal alignment layer during the preparation process, nor does it req...

AI Technical Summary

Problems solved by technology

However, using this method to make larger-sized PDLC light valves, such as dimming glass, will be difficult to make if glass is still used as the substrate.

Because the glass has poor elasticity, especially when the glass size is large, the glass substrate is easy to break and shatter, making the manufacturing process difficult to control

At the same time, because the PDLC light valve with glass as the substrate cannot be bent or made into a specific bending shape, its application is limited; moreover, the thickness of the single-layer glass substrate is generally more than 0.5mm, and the PDLC light valve made of it The thickness of the valve is also thicker

[0004] In addition, in the prior art, spherical fillers made of glass are usually used to control the thickness of the liquid crystal cell, but the sliding of the spherical filler is caused during the pressing process of the upper and lower substrates, resulting in uneven thickness of the cell

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