Quantum dot film and backlight module

Abstract

The invention provides a quantum dot film and a backlight module. The quantum dot film sequentially comprises a first anti-reflection layer, a first transparent sheet layer, a quantum dot layer, a second transparent sheet layer and a second anti-reflection layer. The first anti-reflection layer achieves permeability increase on blue light, and the second anti-reflection layer achieves permeability increase on red light and green light. The first anti-reflection layer achieving permeability increase on the blue light is arranged to achieve permeability increase on the blue light to improve the lighting effect, and the second anti-reflection layer achieving permeability increase on the green light and the red light is arranged to guarantee that spectators have better watching comfort.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal display, and in particular relates to a quantum dot film and a backlight module. Background technique [0002] After half a century of development and research, liquid crystal display (LCD) has become the dominant flat panel display technology. Since LCDs do not emit light themselves, they require a backlight. Cold Cathode Fluorescent Lamp (CCFL) used to be the most common backlight, but it can only achieve 75% NTSC color gamut, so in order to get wider color gamut, higher brightness and lower energy consumption, white light-emitting diodes ( WLED) quickly replaced the position of CCFL and became the main backlight source. However, the brightness and contrast of WLED-based backlights are still relatively low. Therefore, researchers are committed to developing newer backlight technology to improve these problems. [0003] Quantum dot film is an optical film used to replace the lower diff...

AI Technical Summary

Problems solved by technology

[0004] At present, the quantum dot film has the following problems: 1. The quantum dot film uses a blue LED chip as an excitation light source. When the blue light emitted by the blue LED chip is incident from air to the substrate (glass or film), due to the difference in the refractive index of the interface, Part of the light is reflected and lost, resulting in a slightly lower light efficiency for exciting quantum dots

2. When the white light formed by exciting quantum dots with blue light enters the air from the uppermost material or protective layer, there is also a difference in interface refractive index, resulting in the loss of excitation light exit.

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