Panel spliced type backlight module

Abstract

The invention provides a panel spliced type backlight module, which forms a large-size thinned liquid crystal display screen with a liquid crystal module and sequentially comprises a back panel, a reflecting sheet, a light guiding module, light sources, a light mixing space, a diffusion panel and an optical film. More than two supporting positioning columns are arranged between the light guiding module and the diffusion panel, the light guiding module, the supporting positioning columns, the diffusion panel and the optical film are fixed on the back panel, and the optical film is attached on the diffusion panel. The light guiding module is formed by splicing more than two light guiding panels, and the light sources are arranged outside the light guiding panels or between the two light guiding panels. The large-size planar light guiding module is formed by splicing more than two small-size light guiding panels and matching with the light sources inserted laterally, reflecting points distributed by corresponding to spliced line spots of the light guiding panels are arranged on a light inlet surface of the diffusion panel and projections are arranged on a light outlet surface of the diffusion panel, light of the light sources can be mixed so as to realize thinned design of the backlight module.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display screens, in particular to a puzzle-type backlight module. technical background [0002] At present, most liquid crystal modules used in flat panel displays use TFT-LCD technology. TFT-LCD is a non-active light-emitting display. Usually, the white backlight module (Backlight Module) provides uniform system brightness, and then obtains rich color display through the color filter film (Color Filter) of the TFT-LCD liquid crystal panel. Current backlight modules are mainly divided into direct-type backlights and edge-type backlights. [0003] Disadvantages of the side-entry type: Due to the limitation of the manufacturing process, it is difficult to apply the light guide plate in a large size; the current large-size light guide plate is thick, consumes a lot of raw materials, and is heavy in quality; the thin and large-size light guide plate has low process yield and high cost. [000...

AI Technical Summary

Problems solved by technology

[0003] Disadvantages of the side-entry type: limited by the manufacturing process, it is difficult to apply the light guide plate in a large size; the current large-size light guide plate is thick, consumes a lot of raw materials, and is heavy in quality; the process yield of the thin large-size light guide plate is low and the cost is expensive

[0004] Disadvantages of the direct type: limited by the light mixing space of the LED point light source, it is difficult to make it thinner; a large number of optical films are required to solve the light mixing problem

Images