Backlight module and display device

Abstract

The invention provides a backlight module which is characterized by comprising a back light, a light guide plate and a quantum dot layer which are stacked sequentially, the quantum dot layer comprisesa first surface and a second surface which are arranged oppositely, the second surface is fit to the light guide plate, a plurality of first areas and a plurality of second areas which are formed between the first surface and the second surface are arranged on the quantum dot layer, each first area is arranged between two adjacent second second areas so that the first areas and the second areas are arranged in an alternating manner, the density of the quantum dots in the first areas is smaller than that of the quantum dots in the second areas, the first surfaces forming the first areas comprise first curved surfaces which are used for performing scattering treatment to the light passing through the first areas. According to the backlight module and a display device, the problem of large view angle color shift of the display device can be improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module and a display device. Background technique [0002] The backlight module provides a light source for the display device and is an important part of the display device. The backlight module mainly includes LED, light guide plate, quantum dot film and prism film. Wherein, the LED is located on one side of the light guide plate, and the quantum dot film is sandwiched between the light guide plate and the prism film. The light emitted by the LED changes its exit direction through the light guide plate, and then exits through the quantum dot film and the prism film. The purpose of the quantum dot film is to provide quantum dots that can emit light when excited by the light emitted by the LED. The light emitted by the quantum dots and the light emitted by the LED can be mixed to form white light, which enhances the display effect of the display device. [0003] ...

AI Technical Summary

Problems solved by technology

[0003] The quantum dots in the quantum dot film have the function of scattering light, but if the concentration distribution of quantum dots is not uniform, it will cause the area with low quantum dot concentration in the quantum dot film to absorb less light, and emit light from the area with low quantum dot concentration. The outgoing angle range of the light is small, which affects the light effect of the backlight module and the display effect of the display device, and also causes the problem of large viewing angle deviation.

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