Low investment and large size backlight module

Abstract

The invention belongs to back modules and in particular relates to a backlight module which is low in manufacturing cost and stable in structure. The backlight module is low in production cost, simple in structure and convenient and quick to install. The technical scheme is that the low-invest large-size backlight module comprises an aluminum section bar. The upper portion of the aluminum section bar is in a step shape, and the upper portion of the aluminum section bar is formed by a first step, a second step and a third step. The height of the first step, the height of the second step and the height of the third step increase progressively. A bottom plate is arranged at the upper portion of the first step, the height of the bottom plate is smaller than that of the first step, a light reflecting film is arranged on the second step, a light guiding plate is arranged on the light reflecting film, the light guiding plate and an aluminum substrate on the lateral wall of the second step are supported by a plurality of rubber blocks arranged between the light guiding plate and the aluminum substrate, a gap is formed between the light guiding plate and the lateral wall of the second step, a plurality of lamp beads are arranged in the gap, and a prismatic lens and a brightening lens are sequentially arranged at the top end of the light guiding plate. The low-invest large-size backlight module is low in cost and convenient and simple to install.

Description

technical field [0001] The invention belongs to a backlight module, in particular to a backlight module with low manufacturing cost, stable structure and convenient installation. Background technique [0002] At present, the structure of the LCD backlight module is a stamped backplane and a plastic frame to enclose the optical components of the backlight module. Therefore, the manufacture of LCD screens requires the design and manufacture of stamping molds for backplanes and injection molds for plastic frames. The manufacture of the above two molds requires professional designers, professional production plants and special equipment. The production preparation requires large investment, long cycle and high cost. [0003] For commercial display equipment companies (such as LCD smart all-in-one machine manufacturers), if they manufacture LCD displays according to the existing conventional ideas, especially the manufacture of large-size displays, they need to invest millions of...

AI Technical Summary

Problems solved by technology

Injection molds are required to manufacture plastic frames, which is also very expensive. The light guide plate of the conventional LCD backlight module is fixed by the protrusion block and the rubber block of the bottom plate. This method is not suitable for the support of large-sized light guide plates, and the structure is complicated. , high manufacturing cost

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