Backlight module and display device

Abstract

The invention provides a backlight module and a display device comprising the same. The backlight module comprises a light guide plate and an LED (light-emitting diode) lamp strip, the LED lamp strip comprises a printed circuit board and a plurality of LEDs which are mounted and electrically connected onto the printed circuit board, the LEDs comprise first LEDs positioned at two ends of the printed circuit board, each first LED comprises a main light-emitting surface and a side light-emitting surface, each main light-emitting surface is parallel to a light entering surface of the light guide plate, and each side light-emitting surface faces one end of the printed circuit board adjacent to the side light-emitting surface. Part of light of the first LEDs irradiates to the corner of the light guide plate, the problem of dark corner space of the backlight module caused by retraction of the LED lamp strip is effectively avoided, the structure is simple, and the display quality of the display device is improved.

Description

technical field [0001] The invention relates to the field of display technology, and in particular to a backlight module and a display device including the backlight module. Background technique [0002] The display devices currently on the market are mainly backlight liquid crystal display devices, which include a casing, a liquid crystal panel disposed in the casing, and a backlight module. Since the liquid crystal panel itself does not emit light, it needs a light source provided by the backlight module to display images normally. , therefore, the backlight module is one of the key components of the display device. Backlight modules are divided into side-type backlight modules and direct-type backlight modules according to the location of the light source. Among them, the side-type backlight module is to install the LED light bar at the edge of the backlight module behind the liquid crystal panel. Compared with the direct-type backlight module, the side-type backlight mo...

AI Technical Summary

Problems solved by technology

In particular, existing display devices such as mobile phones are no longer limited to square and square screen displays, but are pursuing a larger screen-to-body ratio and a fresher shape, so the display panel is chamfered and cut, and the corresponding backlight The module also needs to be chamfered, which will cause the two ends of the LED light bar to shrink inward, which will reduce the light at the corner and form a dark area

Although the method of moving the LED light bar to the display area and the left and right sides can also increase the corner light, it will also reduce the mixed light area of ​​the backlight module, which greatly increases the difficulty of processing the light guide plate of the backlight factory, and even affects Mass production

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