Backlight module and display device using same

Abstract

The invention provides a backlight module and a display device using the same. The backlight module comprises a light guide plate and a light source device; the light source device comprises an LED (Light-Emitting Diode) chip of which the light extraction surface is directly towards the lateral surface of the light guide plate. The display device using the backlight module, which is provided by the invention, comprises the backlight module. According to the light source device in the backlight module provided by the invention, due to the cancel of a lamp cavity, the size can be greatly reduced, so that the thickness of the backlight module can further be correspondingly reduced. Due to the cancel of the lamp cavity, a light emitting angle of the light source device can further be increased and light emitted by each surface of the LED chip can enter the light guide plate from the lateral surface, so that a light entrance angle of the light which enters the light guide plate is greatly increased, and thus, light entrance spots are avoided and brightness of the backlight module is further promoted. The display device using the backlight module, which is provided by the invention, adopts the backlight module provided by the invention, so that the overall thickness of the display device can be reduced, the cost can be further reduced and the display quality of the display device is greatly improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module and a display device using the backlight module. 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 an edge-type backlight module and a direct-...

AI Technical Summary

Problems solved by technology

The thickness of the backlight module with this structure is largely determined by the thickness of the LED lamp. Due to the existence of the lamp cavity 10, the thickness of the backlight module with this structure is relatively large; at the same time, the existence of the lamp cavity 10 limits the LED lamp The light emitting angle of the lamp, the light incident angle of the light guide plate 1' is small, and light spots are prone to appear on the light guide plate 1'

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