Preparation method and device of reflecting housing of backlight module

Abstract

The invention relates to preparation method and device of a reflecting housing of a backlight module. The preparation method comprises the following steps of: adopting a bendable sunshade, wherein a heating through hole is arranged on the sunshade, a thermoplastic sheet is placed under the sunshade, and a bending part of the thermoplastic sheet corresponds to the heating through hole; heating and softening the bending part of the thermoplastic sheet positioned at the heating through hole by utilizing light illumination, and bending the sunshade so as to drive the thermoplastic sheet to be bent to form the reflecting housing. The preparation method improves the production efficiency of the reflecting housing, effectively reduces the manufacturing cost of the reflecting housing and realizes high regularity and highly-efficient mechanical manufacturing degree of the reflecting housing. The preparation device realizes the fixed-point softening and the mechanical bending to the bending part of the thermoplastic material by adopting the sunshade, has reasonable design, can effectively shorten the bending and production time and improve the defect that the reflection housing deformation in the preparation process is easy to cause as the surface heating temperature of the thermoplastic material is not controlled appropriately.

Description

technical field [0001] The invention belongs to the preparation of a backlight module assembly of a liquid crystal display device, and in particular relates to a preparation method and a preparation device for a reflector of a backlight module of a thermoplastic polymer material. Background technique [0002] In the liquid crystal display device, the backlight module uses the lampshade (Lamp Reflector) as a reflector component to concentrate the side light source and prevent the light source from being exposed. The material currently used is mainly a metal sheet with a high reflectivity coating on the surface. material. The metal reflector is prepared by pressing a metal plate or sheet coated with a high-reflectivity material through a stamping die. However, the cost of raw materials, stamping dies, and stamping machines for metal reflectors is high. At present, the industry has introduced plastic reflectors to replace the existing metal reflectors. [0003] The thermoplas...

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Problems solved by technology

[0005] The present invention also provides a preparation device for the reflector of the backlight module, which realizes the fixed-point softening and mechanized bending of the bending part of the thermoplastic material through the shading cover. The design is reasonable, and the bending production time can be effectively shortened. And improve the defect that the surface heating temperature of thermoplastic materials is not suitable for control, which may easily cause the variation of the reflector during the manufacturing process

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