Backlight module and display device

Abstract

The invention relates to a backlight module and a display device. The backlight module comprises a light guide plate and a plurality of point light sources arranged on one side of the light guide plate at intervals. The light guide plate comprises a front for guiding light to a panel and a back opposite to the front, a first light shading element is arranged on one side of the front of the light guide plate, a plurality of groups of point structures are arranged on the side of the first light shading element facing the front of the light guide plate at intervals, the point structures comprise a plurality of unit points, the plurality of groups of point structures are respective opposite to the point light sources one to one, and gaps between the point structures are opposite to gaps between the point light sources. The display device comprises the backlight module. According to the technical scheme, the first light shading element is increased in the backlight structure to selectively absorb or scatter and reflect part of strong light in light emitted by the point light sources to a B area of the light guide plate, so as to reduce light proportion difference between an A area of the light guide plate and the B area of the light guide plate and avoid light and shade alternating light spots on the light guide plate.

Description

technical field [0001] The invention relates to a device for controlling an independent light source, in particular to a backlight module and a display device. Background technique [0002] The backlight module is one of the important components of the liquid crystal display. Since the liquid crystal itself does not emit light, the function of the backlight module is to supply sufficient brightness and evenly distributed light source, so that the liquid crystal display can display images normally. At present, the display technology of liquid crystal display has become mature, especially in the design of the backlight module. In addition to being used in liquid crystal display devices such as liquid crystal displays and liquid crystal televisions, backlight modules can also provide light sources for display devices such as digital photo frames, electronic paper, and mobile phones. [0003] The backlight module is divided into a side-type backlight module and a direct-type ba...

AI Technical Summary

Problems solved by technology

Among them, the currently used side-entry backlight modules often use black and black tape (both front and back are black) or black and white tape (black on the front and white on the back) to optically block the light in front of the LED. LED is similar to a point light source. The light density of the LED is inconsistent with the light density of the space between the LEDs, so there will be a hotspot (light spot) phenomenon on the light guide plate. The amount of light is increasing, and it is becoming more and more difficult to achieve uniform distribution of light only through the dots on the light guide plate.

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