Preparation method and application of optical rotation material

Abstract

The invention relates to a preparation method of an optical rotation material. The method comprises the following steps: S1, preparation of a metal dot nanorod: dissolving a metal salt in a solvent, adding alkyl acid and a ligand, and preparing a metal dot nanorod material by a water bath one-pot method; and S2, compounding with a rubber material: mixing the metal dot nanorod material with the rubber material, and spin-coating and spreading to obtain the optical rotation material. According to the invention, the metal dot nanorod is prepared into a backlight diaphragm, and the backlight diaphragm is integrated in the backlight LCD module. By utilizing the optical rotation performance of the metal dot nanorods, the light utilization rate of backlight is improved, the exciting light intensity is utilized by 100%, the light utilization rate is improved, the display brightness is improved, and the metal dot nanorods become favorable substitute materials for backlight of a new generation of display screens.

Description

technical field [0001] The invention relates to the field of backlight luminescent materials, in particular to a preparation method and application of an optically active material. Background technique [0002] LCD displays generally use a white backlight and three-color color filters as the color display mechanism. When controlling the color gray scale, it is necessary to rotate the incident light through the upper and lower polarizers, but the intensity of the incident light at this time passes through the lower polarizer. The direct loss is 50%, and the loss after each film layer is even more serious, and the final light extraction rate is less than 5%, which leads to the thorny problem in the field of LCD display brightness. Especially now that the demand for large-screen high-definition display is increasing, the resolution is constantly increasing, and the aperture ratio is gradually decreasing. How to improve brightness is the focus of various enterprises. [0003] A...

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Problems solved by technology

[0002] LCD displays generally use a white backlight and three-color color filters as the color display mechanism. When controlling the color gray scale, it is necessary to rotate the incident light through the upper and lower polarizers, but the intensity of the incident light at this time passes through the lower polarizer. The direct loss is 50%, and the loss after passing through each film layer is even more serious, and the final light output rate is less than 5%, which leads to the thorny problem in the field of LCD display brightness

[0003] At present, the existing solution is to use quantum dot nanorods as the backlight film. Since the anisotropic rods have optical rotation, the incident light does not need to be processed by downward polarization, and the light intensity is not lost, which greatly improves the brightness. The brightness of the LCD display, but because the quantum dots contain toxic elements such as lead and mercury, it has always been criticized by the industry and buyers

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