Backlight module and display device

Abstract

The invention discloses a backlight module and a display device. The backlight module comprises multiple point light sources in array distribution, a light guide plate located at the exit light surface of each point light source, a reflect light layer located at a side surface, which departs from each point light source, of each light guide plate, and a diffuse reflection layer located at one sidesurface, which departs from each reflect light layer, of each light guide plate. Each reflect light layer comprises multiple reflect light net points diffused on the surface of each light guide plate; the reflect light net points are used for reflecting light from the light guide plates to the interior of each light guide plate; and the diffuse reflection layers are used for diffusing the light from the light guide plates to the light guide plates. The point light sources are arranged at the lower surface of each light guide plate, so the number of the arranged point light sources can be greatly increased. Therefore, the backlight module and a laterally entering type backlight module have equivalent thickness, and the number of dimming regions of the backlight module is also increased tomeet use demands of a regional dimming display system and improve the regional dimming effect.

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 development of display technology, liquid crystal display technology is widely used in the display field. The liquid crystal display panel itself cannot emit light, and needs a backlight module to provide the required brightness for its display. However, due to the limitations of the characteristics of the liquid crystal panel itself, light leakage occurs to varying degrees, and there is a bottleneck in the improvement of contrast. [0003] Therefore, a scheme for local dimming of the backlight module is proposed, which can control the backlight in different areas independently, then when the brightness of the backlight corresponding to the highlighted part in the displayed image can reach the maximum, while the brightness of the backlight in the image can be maximized. The backlight corresponding ...

AI Technical Summary

Problems solved by technology

The side-entry backlight module can achieve ultra-thin design, the total thickness of the display device can be 9mm, and the thickness of the backlight module can be 7.6mm, but the number of partitions of the side-entry backlight module is only 32 partitions at most, and the adjustment of ULED Light control and image quality adjustment can't achieve the best effect at all

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