CN218413145U - Mini-LED backlight module, display panel and terminal - Google Patents

Abstract

The utility model belongs to the technical field of display equipment, and relates to a Mini-LED backlight module, which comprises a Mini-LED lamp plate, a light homogenizing film component and an optical film component, wherein the surface of the Mini-LED lamp plate is sequentially provided with the light homogenizing film component for homogenizing light and the optical film component for brightening; the Mini-LED lamp panel is provided with a blue light source and a white light source, the blue light source array is distributed in the middle of the Mini-LED lamp panel, and the white light source array is distributed on the periphery of the blue light source. The Mini-LED lamp panel is divided into a blue light area consisting of blue light sources and a white light area consisting of white light sources, the white light area is not covered by a light homogenizing film assembly and is used as an intermediate medium for blue light conversion and white light connection as much as possible, transition is uniform, an intermediate bright band formed by blue light serial winding is solved, and poor generation is avoided by a design that a shading adhesive tape is used for shading partial light emitting failure. The application also provides a display panel and a terminal.

Description

Mini-LED backlight module, display panel and terminal

Technical Field

The utility model belongs to the technical field of display device, a Mini-LED's backlight unit, display panel and terminal is related to.

Background

The backlight module is one of the key components of the display panel, and is used to provide a light source with sufficient and uniformly distributed light. In recent years, mini-LED display products with lower technical threshold compared with Micro-LEDs are developed vigorously, and a Mini-LED backlight and liquid crystal glass display ultra-high definition product combining a quantum dot technology and a backlight large-scale partition technology appears in the market. The picture quality of the OLED is not inferior, but the cost, reliability and service life of the OLED are lower and higher. The MINI LED quantum dot backlight liquid crystal display has good development prospect.

In addition, a backlight technology of matching Mini-LEDs with super-multiple partitions starts from more precise backlight light source control, the overall display contrast is improved, LEDs in corresponding areas are controlled to be not luminous through dynamic backlight under black pictures, the full black effect that black picture pixels are not luminous is achieved, energy is saved, the more local dimming partitions are, the more precise the local dimming partitions are, the better the picture quality effect is. However, in the stage of converting the blue light chip into white light, the edge of the whole Mini-LED backlight module leaks blue light because of the failed edge of some film materials, which affects the picture quality.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a Mini-LED's backlight unit, display panel and terminal to prior art's is not enough for solve or reduce the phenomenon that the backlight edge leaks the blue light.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a backlight module of a Mini-LED comprises a Mini-LED lamp panel, a light homogenizing membrane component and an optical membrane component, wherein the surface of the Mini-LED lamp panel is sequentially provided with the light homogenizing membrane component for homogenizing light and the optical membrane component for brightening;

the Mini-LED lamp panel is provided with a blue light source and a white light source, the blue light source array is distributed in the middle of the Mini-LED lamp panel, and the white light source array is distributed on the periphery of the blue light source.

In one embodiment, the white light source is a CSP or an SMD, and the blue light source is a blue chip.

In one embodiment, the dodging film assembly covers only the blue light source.

In one embodiment, the side of the dodging film assembly is provided with transparent support columns.

In one embodiment, the light unifying film assembly includes a BLT film, a light unifying structure film, a QD film, or a fluorescent film.

In one embodiment, the optical film assembly includes a lower brightness enhancement film and an upper brightness enhancement film.

Another embodiment of the present invention further provides a display panel, which comprises the above Mini-LED backlight module.

Another embodiment of the present invention further provides a terminal, the above display panel.

Use the technical scheme of the utility model, divide into the blue light region that comprises the blue light source and constitute the white light region by the white light source with the Mini-LED lamp plate, reduce blue light leak light risk when the color conversion. The white light area is not covered by a light homogenizing film component, the white light area is used as an intermediate medium for blue light conversion and white light connection as much as possible, transition is uniform, backlight failure edges are emitted by lamps of white light peripheral partitions in combination with white light of blue light color conversion, edges can uniformly emit light, and the QD film and the fluorescent film which are low in cost and large in failure edges can be used.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The present invention will be described in detail with reference to the accompanying drawings so that the above advantages of the present invention can be more clearly understood.

Fig. 1 is a schematic view of a Mini-LED lamp panel of a backlight module of a Mini-LED of the present invention;

FIG. 2 is a cross-sectional view of a Mini-LED lamp panel of a Mini-LED backlight module of the present invention;

fig. 3 is a schematic cross-sectional view of a Mini-LED backlight module according to the present invention;

fig. 4 is a schematic diagram of a Mini-LED backlight module according to the present invention.

The reference numbers are as follows:

the LED light source comprises a Mini-LED lamp panel 100, a blue light source 110, a white light source 120, a light homogenizing film assembly 200, a BLT film 210, a light homogenizing structure film 220, a QD film 230, an optical film assembly 300, a lower brightness enhancement film 310, an upper brightness enhancement film 20, a light shading glue 330 and a transparent support column 400.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships that are based on the drawings, are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to 4, a Mini-LED backlight module includes a Mini-LED lamp panel 100, a light homogenizing film assembly 200 and an optical film assembly 300, wherein the surface of the Mini-LED lamp panel 100 is sequentially provided with the light homogenizing film assembly 200 for homogenizing light and the optical film assembly 300 for brightening light;

the Mini-LED lamp panel 100 is provided with a blue light source 110 and a white light source 120, the blue light source 110 is distributed in the middle of the Mini-LED lamp panel 100 in an array, and the white light source 120 is distributed in the periphery of the blue light source 110 in an array.

Aiming at the phenomenon that blue light leaks from the edge of the whole MINI LED backlight module because failure edges can occur on some membrane materials in the white light conversion stage of a blue light chip, the Mini-LED lamp panel 100 is divided into a blue light area consisting of blue light sources 110 and a white light area consisting of white light sources 120, the white light area is arranged around the blue light area, the failure edges of the backlight are emitted by combining lamps which are arranged on the periphery of the white light and are divided into areas with the blue light color conversion, and the risk of blue light leakage is reduced in the color conversion process.

In one embodiment, the white light source 120 is a CSP or an SMD, and the blue light source 110 is a blue chip. Compared with a lamp panel of a pure blue light chip, the technical scheme adopts a mixed loading structure, a circle of CSP white light source 120 of a white light area is arranged around the lamp panel, a blue light chip product of a blue light area is pasted in the middle, the purpose of reducing the risk of blue light leakage during color conversion is achieved,

in one embodiment, the light homogenizing film assembly 200 covers only the blue light source 110. The lamp beads in the white light area do not need the light homogenizing film assembly 200 and are used as an intermediate medium for blue light conversion and white light connection as much as possible. The white light that is converted by combining the lamps with the white light divided into the areas around the failed edge of the backlight with the blue light is emitted, the edge can uniformly emit light, and the QD film 230 and the fluorescent film with large failed edges and low cost can be used.

In one embodiment, the side of the light homogenizing film assembly 200 is provided with transparent support columns 400. The transparent support column 400 is arranged on the side face of the light homogenizing film assembly 200, so that the assembly difficulty of the light homogenizing film assembly 200 can be reduced, and the phenomenon of light crosstalk caused when blue light is converted into white light and contacts the white light emitting part of the CSP can be reduced through the transparent support column 400. Compared with the prior art, the method needs to combine optical design and partition brightness control to solve the crosstalk, and the assembly problem and the crosstalk problem are solved through the transparent support column 400, so that the method is simpler and more convenient.

In one embodiment, the light unifying film assembly 200 includes a BLT film 210, a light unifying structure film 220, a QD film 230, or a fluorescent film. Through the light-homogenizing film structure, the luminous granular sensation is eliminated, and the light is more uniform. The BLT film 210 transmits blue light, and deactivates the QD film 230 to emit white light or the fluorescent film to emit white light, and light of other wavelength bands is reflected back, thereby increasing brightness. Among them, the QD film 230 can accurately and efficiently convert high-energy blue light into white light; the QD film 230 may form a thin film on the LED backlight of the lcd display, and the full spectrum light may be emitted by the blue LED, and by fine adjustment of the backlight, the color gamut representation is greatly improved, and the color is more vivid.

In one embodiment, the optical film assembly 300 includes a lower brightness enhancement film 310 and an upper brightness enhancement film 320. The lower brightness enhancement film 310 and the upper brightness enhancement film 320 are used in combination to concentrate the dispersed light emitted from the light source to the front direction, so as to improve the brightness. The lower and upper brightness enhancement films 310 and 320 are fixed in position by a light shielding glue 330.

Another embodiment of the present invention further provides a display panel, which comprises the above Mini-LED backlight module. Backlight unit adopts blue light source 110 and white light source 120 to load in mixture to realize reducing marginal blue light, when obtaining better luminous effect, makes the big QD membrane 230 in inefficacy limit of low-cost and fluorescent film all can use, can reduce cost, and then when making the display panel who adopts this backlight unit have better display effect, still has lower cost.

Another embodiment of the present invention further provides a terminal, the above display panel. The display panel comprises a backlight module. Backlight unit has when better luminous effect, still has lower cost to make display panel also have lower cost when having better display effect, and then make the terminal also have lower cost when having better display effect.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The backlight module of the Mini-LED is characterized by comprising a Mini-LED lamp panel (100), a light homogenizing film assembly (200) and an optical film assembly (300), wherein the surface of the Mini-LED lamp panel (100) is sequentially provided with the light homogenizing film assembly (200) and the optical film assembly (300);

the Mini-LED lamp panel (100) is provided with a blue light source (110) and a white light source (120), the blue light source (110) is distributed in the middle of the Mini-LED lamp panel (100) in an array mode, and the white light source (120) is distributed on the periphery of the blue light source (110) in an array mode.

2. The Mini-LED backlight module as claimed in claim 1, wherein the white light source (120) is CSP or SMD, and the blue light source (110) is a blue chip.

3. The backlight module for Mini-LEDs as claimed in claim 1, wherein the dodging film assembly (200) covers only the blue light source (110).

4. The backlight module of Mini-LEDs as in claim 1, wherein the side of the light homogenizing film assembly (200) is provided with transparent support posts (400).

5. A backlight module for Mini-LEDs as in claim 1, wherein the light uniformizing film assembly (200) comprises a BLT film (210), a light uniformizing structure film (220), a QD film (230) or a fluorescent film.

6. The backlight module of claim 1, wherein the optical film assembly (300) comprises a lower brightness enhancement film (310) and an upper brightness enhancement film (320).

7. A display panel comprising a backlight module of the Mini-LED of any one of claims 1 to 6.

8. A terminal characterized by comprising the display panel of claim 7.

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