Backlight module and display device

Abstract

The invention discloses a backlight module. The backlight module comprises a backboard and a plurality of light emitting units. The light emitting units are spliced and fixed to the backboard sequentially. Each light emitting unit comprises a light source component and a light guide piece. The light guide pieces are adjacent to the light source components. Each light guide piece comprises a body and an extension portion. The bodies are fixed to the backboard. Each body comprises a first reflection surface away from the backboard. Each extension portion is arranged at one end, away from the corresponding light source component, of the corresponding body, and comprises a second reflection surface away from the backboard. The second reflection surfaces are connected with the first reflection surfaces smoothly to form upper reflection surfaces of the light guide pieces. The upper reflection surfaces are used for reflecting light rays emitted by the light source components to the direction away from the backboard. Accommodating spaces are formed between the extension portions and the backboard, and are used for accommodating the light source components of the light emitting units. The backlight module emits light evenly. The invention further discloses a display device.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module and a display device. Background technique [0002] At present, large size and thinning are a development trend of liquid crystal television (LCD TV). At the same time, it has gradually become the direction of technological development in the industry to control local dimming (Local dimming) in different areas on large-size TV backlights, so as to realize high-dynamic lighting rendering (High-Dynamic Range, referred to as HDR) precise light control. [0003] Traditional LCD TV modules can be divided into direct-type backlight modules and side-type backlight modules. The direct-type backlight module is affected by the size of the LED secondary lens and the light output angle, and it does not perform well in terms of thinning. The thickness of the side-type backlight module is thinner than that of the direct-type backlight module. However, the light output met...

AI Technical Summary

Problems solved by technology

The direct-type backlight module is affected by the size of the LED secondary lens and the light output angle, so it does not perform well in terms of thinning

The thickness of the side-type backlight module is thinner than that of the direct-type backlight module. However, the light output method is the entire light guide plate. Due to the limitation of the material and strength of the light guide plate, it is difficult to large-scale and prone to uneven light output.

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