Backlight module and display device

Abstract

The invention provides a backlight module and a display device. The backlight module comprises a backboard, a backlight source fixedly arranged on the backboard, and an optical diaphragm located above the backlight source. The backlight source comprises a light-emitting device and a lens. The surface of the lens is coated with red, green and blue optical materials and used for transmitting red light in an area coated with the red optical material, transmitting green light in an area coated with the green optical material, and transmitting blue light in an area coated with the blue optical material. The surface of the lens of the backlight source is coated with the red, green and blue optical materials so as to transmit the red light of a narrow spectrum in the area coated with the red optical material, the green light of a narrow spectrum in the area coated with the green optical material and the blue light of a narrow spectrum in the area coated with the blue optical material, finally, the red light, the green light and the blue light of the narrow spectrum of the surface of the lens are mixed to obtain white light, the overlap range of output red, green and blue light spectrums is small, and the backlight spectrum with the high color gamut can be generated.

Description

Technical field [0001] The present invention relates to the field of display technology, in particular to a backlight module and a display device. Background technique [0002] With the development of display technology, liquid crystal display devices have been widely used. The liquid crystal display device is composed of a liquid crystal panel, a mechanism frame, optical components and some circuit boards. Since the liquid crystal itself does not emit light, some backlight sources are needed to display the picture. Among them, the backlight module is used to provide a backlight source with uniform brightness and distribution for the liquid crystal display device, so that the liquid crystal display device can display pictures normally. [0003] The backlight module can be divided into side-type backlight module and direct-type backlight module according to the light input position of the light source. The direct-type backlight module refers to the light source such as light emitt...

AI Technical Summary

Problems solved by technology

[0004] At present, the color gamut range of the most common LCD TVs on the market is generally 68%-72%, and its color gamut range cannot perfectly reflect the color effect

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