Near-zero OD backlight module and Mini LED lamp bead manufacturing method thereof

Abstract

The invention discloses a near-zero OD backlight module and a Mini LED lamp bead manufacturing method thereof. The backlight module comprises a PCB, lens machining adsorption holes, Mini LED lamp beads, reflection paper, a diffusion sheet, a diffusion plate, a quantum dot film, a prismatic lens and a liquid crystal screen. A back plate is arranged on the back of the PCB, and a diffusion sheet, a diffusion plate, a quantum dot film, a prismatic lens and a liquid crystal screen are sequentially arranged above the PCB; each Mini LED lamp bead comprises a Mini LED chip and a lens, the Mini LED chip is welded on an LED chip bonding pad of the PCB, and the lens wraps the Mini LED chip; the top of the lens is directly contacted with the diffusion sheet; the lens is prepared by curing organic silica gel, the viscosity of the organic silica gel is 4000-22000 Pa.s, and the hardness of the cured organic silica gel is Shore D60. The near-zero OD backlight module has the advantages that the thickness of the backlight module is reduced, the process steps are reduced, the production cost is reduced, meanwhile, the productivity is improved, lenses of different structural shapes are formed, modular production is achieved, and the replacement and maintenance cost is reduced.

Description

technical field [0001] The present invention relates to a near-zero OD backlight module and its Mini LED lamp bead manufacturing method, especially a lens capable of reducing the thickness of the backlight module, reducing process steps, reducing production costs, increasing production capacity, and realizing different structural shapes. A near-zero OD backlight module and its Mini LED lamp bead manufacturing method that realizes modular production and reduces replacement and maintenance costs. Background technique [0002] With the development of display panel technology, people are increasingly pursuing lighter, thinner and larger flexible displays. The traditional TFT-LCD uses a glass substrate and a rigid backlight with a fixed curvature, so it cannot meet the requirements of flexible display. Since OLED is a self-luminous device and has no liquid crystal itself, it is relatively easy to realize flexible display. However, OLED has the disadvantages of short life, poor r...

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Problems solved by technology

[0003] However, the existing Mini LED backlight modules are difficult to process, low in production capacity, and high in processing costs; in addition, the light intensity at the top of the Mini LED lamp bead is relatively high, and the light mixing distance OD (Optical Distance) is usually 10 mm, which cannot be further reduced. The thickness of the backlight module cannot be further reduced

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