Heat sink and backlight module with same

Abstract

The invention provides a heat sink and a backlight module with the same. The heat sink comprises a first base plate, a first side plate arranged on the first base plate and a second base plate arranged on the first base plate; the first base plate and the first side plate are integrally molded; the second base plate is arranged in a screw locking mode on the end of the first base plate, far away from the first side plate; the first base plate is made of aluminum extruded material; and the second base plate is made of aluminum metal plate material. According to the heat sink and the backlight module with the same, the base plates of the heat sink are formed in a splicing mode, a part of base plate is made of relatively thin aluminum metal plate material, so that less aluminum material is used; the heat sink is beneficial for cost control; and the backlight module has an excellent heat radiating effect and ensures the quality of backlight.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a heat sink and a backlight module using the heat sink. Background technique [0002] A liquid crystal display (LCD, Liquid Crystal Display) has many advantages such as a thin body, power saving, and no radiation, and has been widely used. Most of the liquid crystal display devices currently on the market are backlight liquid crystal displays, which include a liquid crystal panel and a backlight module. The working principle of the liquid crystal panel is to place liquid crystal molecules in two parallel glass substrates, control the liquid crystal molecules to change direction by energizing the circuit of the glass substrates, 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 b...

AI Technical Summary

Problems solved by technology

However, due to the limitations of the aluminum extrusion process, if the thickness is too thin, the flatness of the aluminum extrusion profile will be poor. When the width a is increased, the thickness design of the bottom plate 102 needs to be increased accordingly, otherwise the process cannot extrude a profile with better flatness

However, increasing the thickness of the bottom plate 102 will use more aluminum extruded materials, and increasing the width a requires the use of a larger tonnage aluminum extruded machine, which will increase the cost, especially in the heat dissipation design of high-power light strips. The increase in cost is more pronounced

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