Lateral entering type backlight module and display device

Abstract

The invention discloses a lateral entering type backlight module and a display device. The lateral entering type backlight module comprises a light guide plate and a light source assembly; an opened accommodating groove is formed in the edge of the light guide plate and is internally provided with a conducting line; the light source assembly is arranged in the accommodating groove and is electrically connected with the conducting line; a light incident face of the light guide plate is the groove wall face, close to the center of the light guide plate, of the accommodating groove; the conducting line is arranged on the groove wall face, away from the center of the light guide plate, of the accommodating groove; the light source assembly comprises multiple LED light-emitting units distributed in the length direction of the light incident face of the light guide plate at intervals, the LED light-emitting units comprise light emergent faces, connecting faces and at least two cooling faces,the light emergent faces are spaced with the light incident face of the light guide plate, the connecting faces are connected with the light guide plate, and the cooling faces are provided with cooling structures. By means of the lateral entering type backlight module and the display device, the display device can be super-narrow and super-thin.

Description

Technical field [0001] The present invention relates to the technical field of display devices, in particular to an edge-lit backlight module and a display device. Background technique [0002] At present, ultra-narrow and ultra-thin LCD display devices have become the focus of the recent development of the LCD display industry, especially for the thinner needs of mobile phones, PADs, computer displays, LCD screens and other products, using thinner side-lit backlights Module has become a key technology to solve the ultra-narrow and ultra-thin display device. However, for the design of the side-lit backlight module, the expansion gap of the light guide plate, the light mixing distance, the matching degree of the LED and the light guide plate, and the heat dissipation of the LED have become the bottleneck restricting the realization of ultra-narrow and ultra-thin LCD display devices. , The specific performance is as follows: First, the existing edge-type backlight module requires ...

AI Technical Summary

Problems solved by technology

However, for the design of the side-lit backlight module, the expansion gap of the light guide plate, the light mixing distance, the matching degree of the LED and the light guide plate, and the heat dissipation of the LED all become bottlenecks restricting the ultra-narrow and ultra-thin LCD display devices. , the specific performance is as follows: First, the existing side-type backlight module needs a large light mixing distance to realize the line light source, while a small light mixing distance is prone to obvious problems of incident light side lamp shadows ; Second, due to the SMT tolerance of the light bar and other reasons, the alignment problem between the lamp and the light guide plate will result in a bright band on the light incident side. At present, the main method to solve this problem is to add a silk screen film on the light incident side This will not only increase the cost but also reduce the light efficiency; third, because the LED needs effective heat dissipation, it needs a thicker MCPCB board and heat dissipation aluminum strips, which is not conducive to the ultra-thin display; fourth, in order to achieve ultra-thin Therefore, a thinner light guide plate is required, which will lead to a higher matching precision between the LED lamp bead and the light guide plate

Images