Injection moulding device, liquid crystal module, backlight module and manufacturing method thereof

Abstract

The invention provides an injection moulding device, a liquid crystal module, a backlight module and a manufacturing method thereof. The manufacturing method of the backlight module comprises the following steps: controlling the moving module in a first mould unit to form a first injection moulding space; placing a finished flexible circuit board into the first injection moulding space; injecting one of the injection moulding materials of light guide plate or rubber frame into the flow guide channel of a second mould unit, guiding the injection moulding material to flow into the first injection moulding space of the first mould unit through the flow guide channel; after the injection moulding material is injected into and moulded in the first injection moulding space, controlling the moving module of the first mould unit so as to form a second injection moulding space; injecting the other injection moulding material into the flow guide channel, moulding the injection moulding material in the second injection moulding space so as to obtain an integral part composed of a rubber frame, a light guide plate, and the finished flexible circuit board, and finally assembly an optical film group and the integral part together. The production efficiency and product quality of the backlight module are both improved.

Description

technical field [0001] The invention relates to the field of backlight modules, in particular to an injection molding device, a liquid crystal module, a backlight module and a manufacturing method thereof. Background technique [0002] With the rapid development of network and radio communication technologies, small and medium-sized products, especially portable information products such as smart terminals, have made great progress. While people are constantly pursuing high-resolution, high-contrast, narrow-frame and ultra-thin display devices, they also hope to reduce their production costs. The components of the backlight module include: an iron frame, a reflector, a plastic frame, a light guide plate, a finished flexible circuit board (FPCA) and an optical film set. In the prior art, the plastic frame, reflective sheet and light guide plate of the backlight module are injection molded and molded separately, and then manually assembled and fixed together, so there is the ...

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Problems solved by technology

[0003] The invention provides an injection molding device, a liquid crystal module, a backlight module and a manufacturing method thereof, which solves the problems of low production efficiency and many defective products of the backlight module in the prior art

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