The wide color gamut LED display based on quantum dot material is the main development trend of display technology. At the same time, how to realize the LED backlight to emit P-polarized light without DBEF, breaking the monopoly of 3M company in the United States, especially for the application of white LED Quantum dot light-emitting diode (QLED) backlight display is very important and has become one of the key points in the development of next-generation LED display technology.
In the invention, the quantum rod has the characteristics of wide color gamut and linearly polarized light, and is very promising to become a key core material of a new generation of wide color gamut and low cost (DBEF free) LED display technology, breaking through the bottleneck of the existing LED display technology.
Therefore, the research on the application of high-efficiency and high-stability quantum rod active brightness enhancement film composites for the development of a new generation of wide color gamut LED display, the development of a new quantum rod aligning brightness enhancement film preparation process, analysis of its linear polarization optical characteristics, and high The stable quantum rod brightening film mass production technology is important and urgent, and has important theoretical significance and engineering application value.
So far, there has been no literature on the high polarization performance of aligned quantum materials. The present invention is based on the finite-difference time-domain method for the study of polarization properties of metallic nanomaterials, studied in different particle sizes, aspect ratios, radial and axial directions. Based on the duty ratio, different materials, incident angle and other factors, a method of applying aligned quantum materials to the LED brightness enhancement film is proposed. This active brightness enhancement film can realize LED backlight emission without DBEF. Polarized light, and S-polarized light are mostly reflected.
The invention utilizes the aligned quantum material itself to emit polarized light and the periodic metal nano material has a strong polarization effect, in addition to obtaining the polarized light of the light source band, the polarized light of the different wavelength bands emitted by the quantum material by the light source can be obtained. Finally, blue, red and green polarized light is simultaneously obtained with maximum efficiency.
The invention belongs to the technical field of optical film production and manufacture, and discloses an active brightness enhancement film, which comprises a polymer film layer containing a quantum material and a polymer film layer containing a metal nano material, the quantum material being oriented. Periodically, the metal nanomaterials are oriented and periodically arranged, and the quantum materials are perpendicular to the alignment direction of the metal nanomaterials (as shown). 1 is a quantum rod polymer film layer, and 2 is a metal nanorod polymer film layer.
The invention provides an active brightness enhancement film based on quantum materials and metal nano materials. The unique arrangement of quantum materials and metal nano materials in the polymer layer can meet the requirements of the prior art, and can be better applied to QLED backlights. Show up.
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