Lamp cover, backlight module and displaying device

Abstract

The invention discloses a lamp cover, a backlight module and a displaying device. The lamp cover comprises a containing part and a light-out part. A cavity for containing a light source is arranged in the containing part. A protruding ridge which protrudes outwards is arranged on the outer surface, opposite to the containing part, of the light-out part, and light rays emitted by a light source in the cavity are restrained. The backlight module comprises an optics film layer and a light source device which comprises a plurality of lamp covers. The displaying device comprises the backlight module. The lamp covers restrain the light rays emitted by the light source, so that the overlapped zone of the light emitted by the light source and light emitted by an adjacent light source is greatly reduced, and accordingly the phenomenon of crosstalk is avoided. Due to the fact that the lamp covers are used in the backlight module, light emitting effect is better, and cost is greatly lowered. The backlight module is used in the displaying device, so that product quality is greatly improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a lampshade, 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 backlight module needs to supply sufficient brightness and evenly distributed light for the liquid crystal display, 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 an edge-type backlight module and a direct-typ...

AI Technical Summary

Problems solved by technology

When this kind of backlight is applied to a 3D display device, since the LEDs all have a certain light-emitting angle (generally 120°), the rays of light will overlap each other between two adjacent LEDs due to the existence of the above-mentioned angle, and the overlapping Light causes crosstalk (Crosstalk) phenomenon, which affects the display quality of the display device, and is especially prone to image afterimage and smearing in high-speed moving pictures

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