Direct-lit backlight module and display

Abstract

The invention discloses a direct-lit backlight module and a display. The direct-lit backlight module comprises a backplane and LED (Light-Emitting Diode) light bars; the backplane comprises a bottom plate and each side plate which respectively extends towards one side of the bottom plate from each side edge of the bottom plate; the side plates and the bottom plate are surrounded to form a mounting cavity; a side frame corner is formed between each two adjacent side plates; the LED light bars are accommodated in the mounting cavity, and are fixed on the bottom plate; the LED light bars are provided with LED lamp beads adjacent to the side frame corners; lenses adopted by the LED lamp beads are asymmetric lenses; each asymmetric lens consists of a first light transmitting part and a second light transmitting part; the first light transmitting parts are arranged towards the side frame corners; intensity of light entering by the first light transmitting parts is higher than that of light entering by the second light transmitting parts. The direct-lit backlight module disclosed by the invention can effectively improve the problem of a dark corner phenomenon in side frame corner regions of the display so as to promote a display effect of the display.

Description

technical field [0001] The invention relates to the technical field of displays, in particular to a direct-lit backlight module and a display. Background technique [0002] figure 1 It is a side sectional view of a direct-lit backlight module applied to a display in the prior art. figure 2 for figure 1 Schematic diagram of the assembly of the middle light bar and the back panel. Please refer to figure 1 and figure 2 , the existing direct-type backlight module 50 includes a backplane 1 and a light bar group. Generally, the backplane 1 includes a bottom plate 11 and a side plate extending from the periphery of the bottom plate 11 to one side of the bottom plate 11. The side plate and the bottom plate 11 An installation cavity 13 is formed together, the installation cavity 13 has a light outlet facing the bottom plate, and a side frame corner 122 is formed between the adjacent two side plates; the light bar group is accommodated in the installation cavity 13 and arranged...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing displays use a rectangular liquid crystal display, and the backplane 1 corresponds to a rectangular backplane. However, the rectangular backplane has four diagonal corners. The relative position distance of the side is smaller than the distance from the lamp bead to the opposite corner. Under the same light intensity, the amount of light transmitted from the lamp bead to the opposite corner is less than the amount of light transmitted from the lamp bead to the side panel at the same time, resulting in The brightness of the light provided by the backlight module to the side and diagonal of the LCD panel is inconsistent, resulting in vignetting in the diagonal area of ​​the LCD screen, which affects the display effect of the LCD screen

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