Backlight module and display device

Abstract

The invention discloses a backlight module and a display device. The backlight module comprises a light emitting part, a photo-induced light emitting part and a polarization state adjusting part; the light emitting part is used for providing backlight and comprises multiple first subregions, and the light emitting brightness of all the first subregions is different; the photo-induced light emitting part is used for emitting multiple monochromatic lights of which the polarization directions are perpendicular to one another, and the monochromatic lights are compounded into white light to be emitted into the polarization state adjusting part; the polarization state adjusting part is used for adjusting the polarization directions of the monochromatic lights in the white light. According to the backlight module, by means of the combined action of the light emitting part, the photo-induced light emitting part and the polarization state adjusting part, dynamic control over backlight spectra can be achieved, the product color gamut can be widened, and backlight power dissipation can be reduced.

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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