Backlight unit and liquid crystal display device

Abstract

The invention provides a backlight unit and a liquid crystal display device. The backlight unit comprises a substrate, backlight sources, backlight connecting fingers, first connecting wires, second connecting wires and third connecting wires, wherein the backlight sources are located at the front side of the substrate, the backlight connecting fingers are located at the reverse side of the substrate, first electrodes of each line of backlight sources are all electrically connected with the first connecting wires at the reverse side of the substrate through corresponding first via holes, second electrodes of each row of backlight sources are all connected through the second connecting wires, each second connecting wire is electrically connected with the corresponding third connecting wireat the reverse side of the substrate through a second via hole, and the backlight connecting fingers are electrically connected with the first connecting wires and the third connecting wires. By meansof the backlight unit and the liquid crystal display device, wiring design of the backlight unit can be optimized, the size of a backlight bezel is reduced, and the design of a slim bezel is achieved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module and a liquid crystal display device. Background technique [0002] With the development of display technology, liquid crystal displays (Liquid Crystal Display, LCD) and other flat display devices are widely used in mobile phones, televisions, personal Various consumer electronic products such as digital assistants, digital cameras, notebook computers, and desktop computers have become the mainstream of display devices. [0003] Most of the liquid crystal displays currently on the market are backlight liquid crystal displays, which include a housing, a liquid crystal display panel disposed in the housing, and a backlight module disposed in the housing. The liquid crystal display panel is the main component of the liquid crystal display, but the liquid crystal display panel itself does not emit light, and needs the light source provided by the backlight module ...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, the existing backlight module using Mini-LEDs includes: a substrate, a plurality of backlight regions 10 including Mini-LEDs arranged in an array on the substrate, and a positive electrode row is provided corresponding to each row of backlight regions 10. Line 20, corresponding to each column of backlight area 10 is provided with a negative pole wiring 30, each positive pole wiring 20 is connected to the positive pole of its corresponding row of backlight areas 10, and each negative pole wiring 30 is connected to the negative pole of its corresponding row of backlight areas 10 A backlight golden finger 40 is provided below the backlight area 10, and a plurality of positive conductive contacts 401 and a plurality of negative conductive contacts 402 are arranged on the backlight golden finger 40, and each positive wiring 20 is connected to a positive conductive contact. sheet 401, each negative wire 30 is connected to a negative conductive contact 402, wherein the positive wire 20, the negative wire 30 and the backlight gold finger 40 are all located on the front of the substrate, and the positive wire 20 and the negative wire 30 are on the wire The process needs to occupy a lot of wiring space, resulting in the frame of the backlight module being too large, which is not conducive to the realization of narrow frame display

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