CN217061336U

CN217061336U - Composite film applied to Mini LED backlight module

Info

Publication number: CN217061336U
Application number: CN202123047980.5U
Authority: CN
Inventors: 罗培栋; 戚洛东; 卞高科
Original assignee: Ningbo Dxc New Material Technology Co ltd
Current assignee: Ningbo Dxc New Material Technology Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-07-26
Anticipated expiration: 2031-12-07

Abstract

The utility model provides a be applied to Mini LED backlight unit's complex film, includes diffusion layer, microlens layer, basic unit, the total reflection layer of from the top down arranging, the microlens layer have a plurality of microlens to link up each other and constitute its characterized in that: the grooves are formed in the total reflection layer, so that the total reflection layer is divided into rectangles with the same shape, each rectangle corresponds to one microlens in the microlens layer, the thickness of the optical film can be reduced, and the display screen is favorably thinned.

Description

Composite film applied to Mini LED backlight module

Technical Field

The utility model relates to a be applied to Mini LED backlight unit's complex film.

Background

The Mini LED backlight adopts a direct type LED backlight mode, so that the size of an LED crystal grain is greatly reduced. The color filter has the advantages of adjustable regional brightness, high color rendering property, high contrast ratio and the like. Meanwhile, the thin-wall solar cell module has the characteristics of thinner thickness, more electricity saving, flexibility and the like, and is more flexible to apply. Most importantly, Mini LEDs are lower cost, longer life, and do not risk burn-in than OLEDs. Therefore, a mini led backlight is more likely.

The mini LED backlight has a light source array composed of a plurality of LED chips, light emitted by a single mini LED point light source has a limited emission angle, so that a light-emitting surface presents energy distribution with large central area energy and small surrounding energy, and the light source array composed of a plurality of mini LED chips is arranged on the television screen, the computer screen and the mobile phone screen, so that a periodical light and dark area appears on the screen.

Disclosure of Invention

In order to overcome the above-mentioned not enough of the present blooming of being applied to Mini LED backlight unit, the utility model provides a light-dutyization be applied to Mini LED backlight unit.

The utility model provides a technical scheme of its technical problem is: the utility model provides a be applied to composite film of Mini LED backlight unit, includes diffusion layer, microlens layer, basic unit, the total reflection layer of from the top down cloth, the microlens layer a plurality of microlens link up each other and constitute, be equipped with the recess on the total reflection layer to with the total reflection layer separate into the rectangle of same shape, every rectangle corresponds a microlens in the microlens layer respectively.

Further, the thickness of the base layer is 20-30 μm, the thickness of the prism layer is 50-80 μm, and the thickness of the diffusion layer is 60-80 μm.

Further, the total reflection layer comprises an optical base film, and a metal layer or a full dielectric particle layer coated on the lower surface of the optical base film.

The beneficial effects of the utility model reside in that: the grooves are formed in the total reflection layer, so that the total reflection layer is divided into rectangles with the same shape, each rectangle corresponds to one microlens in the microlens layer, the thickness of the optical film can be reduced, and the display screen is favorably thinned.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1, the composite film applied to the Mini LED backlight module comprises a diffusion layer 1, a microlens layer 2, a base layer 3 and a total reflection layer 4 which are arranged from top to bottom, wherein the microlens layer 2 is formed by mutually connecting a plurality of microlenses 5, a groove 6 is arranged on the total reflection layer 4, so that the total reflection layer 4 is divided into rectangles with the same shape, and each rectangle corresponds to one microlens 5 in the microlens layer. The diffusion layer 1 is a diffusion layer commonly used in optical films, and diffusion particles are mixed in PET, and the diffusion particles may be inorganic diffusion particles such as silica particles or organic diffusion particles such as PMMA particles. PET is also typically used for the base layer 3.

In order to obtain better optical performance, the structure of the total reflection layer 4 is as follows: the optical base film comprises an optical base film and a metal layer or an all-dielectric particle layer coated on the lower surface of the optical base film, wherein the optical base film is generally made of PET.

In order to obtain better optical performance, the thickness of the base layer 3 is preferably controlled to be 20-30 μm, the thickness of the prism layer 2 is preferably controlled to be 50-80 μm, and the thickness of the diffusion layer 1 is preferably controlled to be 60-80 μm.

Claims

1. The utility model provides a be applied to Mini LED backlight unit's complex film, includes diffusion layer, microlens layer, basic unit, the total reflection layer of from the top down arrangement, the microlens layer have a plurality of microlens to link up each other and constitute its characterized in that: the total reflection layer is provided with a groove, so that the total reflection layer is divided into rectangles with the same shape, and each rectangle corresponds to one micro lens in the micro lens layer.

2. The composite film applied to a Mini LED backlight module as claimed in claim 1, wherein: the thickness of the base layer is 20-30 μm, the thickness of the prism layer is 50-80 μm, and the thickness of the diffusion layer is 60-80 μm.

3. The composite film applied to a Mini LED backlight module as claimed in claim 1, wherein: the total reflection layer comprises an optical base film and a metal layer or a full dielectric particle layer coated on the lower surface of the optical base film.