Fluorescent quantum dot display mode based on light polarization modulation via liquid crystal

Due to the existence of color filter, the traditional displays have large power consumption but relatively low efficiency. In this article, we propose a method to utilize the polarization of an ultraviolet light, which is modulated by liquid crystal, to influence the light intensity distribution of a designed nanostructure in order to tune the stimulated fluorescent light of the quantum dots deposited in the corner of the metallic nanostructure. The concept is fundamentally based on the polarization-influenced local surface plasmon resonance and the proposed device comprises of the metallic nanostructure, quantum dots and liquid-crystal-based light polarization modulator. We simulate the electric field distribution for a single pixel case, and calculate the light intensity distributions for several metallic nanostructures under different polarization states of light. Thus, we theoretically verify the light intensity enhancement via local surface plasmon resonance arising from the specific metallic nanostructure. Through the technologies of E-beam etching and semiconductor deposition, the quantum dots with different sizes for corresponding colors can be implanted in specific "hot" areas, i. e. , the corner of the metallic nanostructure, whose stimulated emitting fluorescent light intensity can be controlled via light polarization modulation through liquid crystal module. Thus, we propose a novel display mode, which possesses relatively high efficiency and large color gamut. Although it currently encounters some unexpected issues such as relatively low contrast ratio and low resolution, our proposed device does provide a potential way for the information display in people' s daily life. We believe that with the development of the technology and the optimization of the device, the proposed device is promising in the field of display or beyond.