Edge-lighting backlight module

Abstract

The invention provides an edge-lighting backlight module which comprises a back plate, a light guide plate arranged in the back plate and a backlight installed on the back plate, wherein the backlight comprises a circuit board and a plurality of LED (light-emitting diode) lights arranged on and electrically connected to the circuit board; the circuit board comprises an installation part and a bending part connected to the installation part; the LED (light-emitting diode) lights are arranged on the installation part; the bending part is connected to the back plate; and the light guide plate is supported on the bending part. According to the edge-lighting backlight module, since the metal-based printed circuit board provided with the bending part is adopted, the heat-dissipating mode in the prior art that the metal-based printed circuit board is pasted on an aluminum extrusion through a thermal conductive adhesive is replaced, a heat-dissipating effect is enhanced, and the quality of the backlight module is improved; and in addition, the bending part of the metal-based printed circuit board can be processed into various shapes so as to support the light guide plate and avoid the use of the aluminum extrusion in the prior art, so that the production cost can be reduced to a large extent.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a side-entry backlight module. Background technique [0002] A liquid crystal display (LCD, Liquid Crystal Display) has many advantages such as a thin body, power saving, and low radiation, and has been widely used. Most of the liquid crystal display devices currently on the market are backlight liquid crystal display devices, which include a liquid crystal panel and a backlight module. The working principle of the liquid crystal panel is to place liquid crystal molecules between two parallel glass substrates, and control the direction of the liquid crystal molecules through whether the glass substrates are energized or not, and refract the light from the backlight module to produce a picture. Since the liquid crystal panel itself does not emit light, the light source provided by the backlight module is needed to display images normally. Therefore, the backlight module bec...

AI Technical Summary

Problems solved by technology

However, the formation of the boss 502 increases the use of aluminum extruded materials, increases the production cost, and increases the weight of the backlight module, which is not conducive to the lightweight of the backlight module

[0005] see image 3 , in order to solve the above-mentioned problems, those skilled in the art use the adhesive strip 600 to attach to the boss 502' to supplement part of the height, thereby reducing the amount of aluminum extruded material and reducing the weight of the backlight module. However, the adhesive strip 600 needs to prepare glue for fixing, which increases the production process and leads to an increase in production costs

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