Backlight module and display device

Abstract

The invention discloses a backlight module and a display device and relates to the technical field of display. The backlight module and display device can reduce the size of a side frame of a liquid crystal display and realize the narrow side frame structure of the liquid crystal display. The backlight module comprises a light guide plate and at least one light guide structure, each light guide structure comprises a first light guide element and a second light guide element, and each light guide structure is corresponding to at least one laser; the first light guide element is located at the backlight side of the light guide plate, at least one laser is located at the side of the first light guide element far away from the light guide plate, and the laser light emitted to the first light guide element from at least one laser diffuses in the light emitting side direction of the first light guide element in a total reflection mode; the light emitting side of the second light guide element contacts with the light incidence side of the light guide plate, the light incidence side of the second light guide element contacts with the light emitting side of the first light guide element, and the second light guide element is used for leading the laser light diffused in the first light guide element into the light guide plate. The backlight module is used for the backlight source of the liquid crystal display.

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] With the continuous development of display technology, Liquid Crystal Display (LCD for short) has become a mainstream display due to its advantages of thinness, lightness and compactness, which save a lot of space. As we all know, the liquid crystal itself does not emit light, but displays the image through the transmittance of the light emitted by the backlight of the LCD. Therefore, the backlight is essential for the LCD. [0003] In the prior art, commonly used backlight sources are LED (Light Emitting Diode, Light Emitting Diode) light sources and laser light sources. Among them, the most significant advantage of the LED light source is that it can expand color reproduction and have ultra-high contrast. By selecting LEDs with appropriate wavelength bands and using LED light sources as backlight sources,...

AI Technical Summary

Problems solved by technology

However, due to the large volume of the laser that generates laser light, using a laser light source as a side-entry backlight will occupy more side space of the LCD, making the side frame of the LCD larger, and it is difficult to realize the narrow frame structure of the LCD.

Images