Backlight module

Abstract

The invention relates to a backlight module. The backlight module comprises a light diffusion module and strip light source modules, wherein according to the light diffusion module, a panel, multiplefrustums, lamp holes and lamp slots are integrally formed, the frustums are arranged at the rear side of the panel, distributed uniformly in an array and protrude backwards, top faces of the frustumsface backwards, each lamp hole is formed in the center of the top face of one frustum, and protective walls arranged on the periphery of each row or each column of lamp holes define the lamp slots; the strip light source modules are installed in the lamp slots; the light diffusion module is made of a light-scattering material; light sources arranged in the same way as each row or each column of lamp holes are arranged on each strip light source module; the strip light source modules are fixedly installed in the lamp slots, and the light sources are placed in the lamp holes; and the strip lightsource modules are connected through wires or electrically connected through a circuit board. Since the frustums are uniformly distributed in an array at the rear side of the panel, obvious dark lines cannot be generated after mutual splicing, and the splicing requirement of large-area light-emitting display equipment is met.

Description

technical field [0001] The invention relates to the technical field of backlight sources, in particular to a backlight module. Background technique [0002] The application of backlight is extremely extensive, not only for TFT-LCD (liquid crystal display), but also widely used in light boxes, lighting and other special display equipment. Among them, the application field of light boxes is the most extensive, which involves the construction field (such as: window , lighting roof, lighting wall, signboard, emergency light source, etc.), industrial fields (such as: film viewer, instrument panel, machine identification, production line process instructions, metering equipment, etc.), lighting field (such as: flat light source, Light source curtains, light source walls, ground light sources, etc.), civil fields (such as: photo frames, decorative paintings, dressing tables, etc.), commercial fields (such as: item array cabinets, guide signs, identification signs, etc.), medical fi...

AI Technical Summary

Problems solved by technology

Since the diffuser plate is installed on the front side of the box, and the light source is installed on the back side of the box, there is a relatively large distance between the light source and the front side, so the direct-type backlight is relatively thick; at the same time, the box is surrounded by an opaque box. After the body wall is spliced, there will be serious shadows between the cabinets, and it is impossible to achieve shadowless splicing

Images