Optical plate based on quantum dots

Abstract

The invention relates to the technical field of quantum dots, in particular to an optical plate based on quantum dots, which comprises a substrate and a quantum dot layer coated or sprayed on the upper surface or the side surface of the substrate, wherein the quantum dot layer comprises a first quantum dot zone capable of converting blue light into green light, a second quantum dot zone capable of converting blue light into red light, and a blue light zone, and no quantum dot covers the blue light zone; green light obtained through conversion of the first quantum dot zone and red light obtained through conversion of the second quantum dot zone are combined with blue light in the blue light zone to produce light of a specific wave band. The invention provides the optical plate based on the quantum dots, which can form light of the specific wave band, especially three-color white light, under the excitation of blue light. According to certain aspects, the optical plate based on the quantum dots can be used as a light guide plate, can convert blue light sent by a backlight source into red light and green light on the base of not changing original procedures so as to enable a liquid crystal display to display more brightly and colorfully.

Description

technical field [0001] The invention relates to the technical field of quantum dots, in particular to an optical plate based on quantum dots. Background technique [0002] Liquid crystal displays (LCDs) are the dominant flat panel display technology in the market today. Conventional LCD systems include a network of optical components in front of a light source (eg, fluorescent lamps, light emitting diodes (LEDs), etc.), commonly referred to as a backlight unit. A conventional backlight unit includes a light source coupled to a light guide through which the light passes to finally reach a display panel. LED backlights used in conventional systems consist of a set of optical films placed on top of the LED source, slightly away from the source. Among other things, choosing an appropriate distance between the LED source and the associated optical film ensures proper optimization of the light entering the display panel. [0003] The LCDs used in mobile electronic devices today...

AI Technical Summary

Problems solved by technology

[0005] At present, the quantum dot film is mainly used to replace the fluorescent powder in the market, and the quantum dot film is loaded between the light guide plate and the prism sheet to improve the color gamut of the liquid crystal display, but this will increase more processes than the original production process. Including film unwinding, quantum dot processing, and film winding processes, it is necessary to add one or more processes to the original assembly process. On the one hand, the increased transformation cost and on the other hand, the increased production time reduces the work efficiency

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