A kind of backlight module and display device

Abstract

The invention discloses a backlight module and a display device, comprising: a light-emitting component, a photoluminescent component and a polarization adjustment component; wherein, the light-emitting component is used to provide backlight; the light-emitting component is divided into a plurality of first sub-regions; each The luminous brightness of the first sub-region is different; the photoluminescent component is used to emit a variety of monochromatic lights with polarization directions perpendicular to each other under the excitation of the backlight, and the multiple monochromatic lights are combined into white light and enter the polarization state adjustment component; A state adjusting component is used for adjusting the polarization directions of multiple monochromatic lights in the white light. The above-mentioned backlight module provided by the embodiment of the present invention can not only realize the dynamic control of the backlight spectrum through the joint action of the light-emitting component, the photoluminescence component and the polarization state adjustment component, but also help to improve the color gamut of the product, and can also reduce the power consumption of the backlight. .

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] In the field of display technology, liquid crystal display panels are widely used in modern digital information equipment due to their advantages of small size, low power consumption, no radiation, and high resolution. [0003] Compared with other display modes (PDP, OLED, etc.), thin film field effect transistor (Thin Film Transistor, TFT) liquid crystal display (Liquid Crystal Display, LCD) is a passive light-emitting mode, using white light-emitting diodes (LEDs) as light sources, resulting in The color gamut of the product is low and the colors are distorted. [0004] Increasing the color gamut of TFT LCD products can increase the thickness of the color film and use LEDs with a higher color gamut. However, when the color gamut of the product is increased, the brightness of the backlight will decrease, an...

AI Technical Summary

Problems solved by technology

[0004] Improving the color gamut of TFT LCD products can increase the thickness of the color film and use LEDs with a higher color gamut. However, when the color gamut of the product is improved, the brightness of the backlight will decrease, and the transmittance of the color film will also decrease, resulting in increased panel power consumption.

As in the common backlight module structure, such as figure 1 As shown, the quantum dot film 01 is used to improve the color gamut of the product, but in the process of converting blue light to white light, due to the loss of excitation energy, the backlight of the product using the quantum dot film is low, and more luminous flux is converted by the quantum dot film and color filter losses

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