CN217214749U

CN217214749U - Mini LED backlight improves side edge bluing structure

Info

Publication number: CN217214749U
Application number: CN202221083787.9U
Authority: CN
Inventors: 李勇; 陈道胜
Original assignee: Boxun Photoelectric Technology Hefei Co ltd
Current assignee: Boxun Photoelectric Technology Hefei Co ltd
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2022-08-16
Anticipated expiration: 2032-05-07

Abstract

The utility model discloses a Mini LED backlight improves side reason bluing structure, including the light source base plate, be provided with yellow silica gel layer around the top of light source base plate, yellow silica gel layer is the closed loop, the cross section on yellow silica gel layer is the L type, the utility model discloses Mini LED backlight improves side reason bluing structure, can effectively solve the bad phenomenon of bluing limit in the present Mini LED backlight module display trade, and the light source base plate increases the yellow silica gel reflection stratum all around, goes effective conversion blue light to the acceptable white light of people's eye from the light-emitting source, promotes light energy conversion efficiency and converting effect.

Description

Mini LED backlight improves side edge bluing structure

Technical Field

The utility model relates to a Mini LED backlight module shows relevant and applied technical field, and specific Mini LED backlight improves side reason bluing structure.

Background

The existing Mini LED backlight source structure is mainly characterized in that a blue light source chip 6 is bound with an FPC/PCB circuit board 7 through an SMT process, the LED chip emits a surface light source side conduction chip blue light conduction path 5 after a direct current power supply is switched on, the blue light is converted into micro white light 2 direction conduction which can be accepted by human eyes after passing through a yellow printing layer 3, poor phenomena such as insufficient conversion or light leakage can occur in the conversion process, and therefore the side blue emission poor phenomenon is generated, and the poor area is as shown in 1.

After the blue chip 6 is connected with a direct-current power supply to emit light, most of blue light can be converted into white light acceptable to human eyes through the blue light conversion module 4, but blue light which is leaked or insufficiently converted can be refracted out of the visible area 1 on the peripheral side edge of the product, so that the poor phenomenon that the peripheral side edge of the conventional Mini LED backlight source emits blue light exists

The existing Mini LED backlight sources all have the following technical problems:

1. the blue light is converted into white light acceptable to human eyes through the yellow printing edge, and the defects of insufficient white light, light leakage and the like exist.

2. The yellow print edge is carried on the component material, and the material assembly itself has a shift phenomenon, thereby increasing the probability of poor lateral blue light.

And 3, blue edges around the Mini LED backlight source can cause the phenomena of uneven display effect picture of the module, deviation of optical test color coordinates and the like.

SUMMERY OF THE UTILITY MODEL

For solving the not enough that mentions in the above-mentioned background art, the utility model aims at providing a Mini LED backlight improves side reason bluing structure, can effectively solve the bad phenomenon in bluing limit in the present miniLED backlight module display trade, and the light source base plate increases yellow silica gel reflection stratum all around, goes effective conversion blue light from luminous source and is the acceptable white light of people's eye, promotes light energy conversion efficiency and converting effect.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides a Mini LED backlight improves side edge bluing structure, includes the light source base plate, be provided with yellow silica gel layer around the top of light source base plate, yellow silica gel layer is the closed ring, the cross section on yellow silica gel layer is the L type.

Further preferably, a blue light emitting chip is disposed on a side of the light source substrate close to the display area.

Further preferably, the blue light emitting chip is provided in plurality.

Further preferably, the blue light emitting chips are uniformly distributed on the light source substrate in an array.

Further preferably, the blue light emitting chip is bound on the FPC/PCB circuit board by SMT process

Further preferably, the blue light emitted by the blue light emitting chip is refracted by the yellow silica gel layer to form a blue light conducting path.

The utility model has the advantages that:

1. the utility model discloses can effectively solve the bad phenomenon of blue limit that sends out in the present miniLED backlight module display trade, increase yellow silica gel reflection stratum around the light source base plate, go from the light emitting source effectively to convert the blue light and can accept white light for the human eye, promote luminous energy conversion efficiency and conversion effect;

2. compared with the traditional blue edge solution, the utility model has the advantages that yellow printing is silk-screened on the edges of the membrane material, so that the yellow printing process is reduced, and the product yield is improved;

3. the utility model discloses need not consider that membrane material tissue precision brings the influence to blue limit all around, solve from the luminous source of chip.

Drawings

The present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a prior art configuration;

FIG. 2 is a partial sectional view of the present invention;

fig. 3 is a top view of the light source back plate of the present invention;

fig. 4 is a cross-sectional view of the optical original substrate of the present invention.

In the figure:

1; a visible area, 2; 3, micro white light; yellow printing layer, 4; blue light conversion module, 5; chip blue light conduction path, 6; blue light source chip, 7; FPC/PCB circuit board, 8; a yellow silica gel layer, 9; blue light conduction path, 10; a blue light emitting chip 11; a light source substrate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements 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.

As shown in fig. 2 to 4, the structure for improving side edge bluing of the Mini LED backlight comprises a light source substrate 11, wherein a yellow silica gel layer 8 is arranged around the top end of the light source substrate 11, the yellow silica gel layer 8 is a closed ring, and the cross section of the yellow silica gel layer 8 is L-shaped.

Further preferably, a side of the light source substrate 11 close to the display area is provided with a blue light emitting chip 10.

Further preferably, the blue light emitting chip 10 is provided in plurality.

Further preferably, the blue light emitting chips 10 are uniformly distributed on the light source substrate 11 in an array.

Further preferably, the blue light emitting chip 10 is bound on the FPC/PCB circuit board by SMT process

Further preferably, the blue light emitted by the blue light emitting chip 10 is refracted by the yellow silica gel layer 8 to form the blue light conducting path 9.

Principle of operation

In order to solve the problem of poor blue edge around the miniLED backlight source in the current stage, the light source substrate 11 is mainly designed to be additionally provided with a yellow silica gel layer 8 around the light source substrate, so that blue light is effectively converted from a light emitting source to be white light acceptable to human eyes, and the light energy conversion efficiency and the conversion effect are improved.

The blue light emitting chip 10 is bound on the FPC/PCB circuit board through an SMT process, blue light conducting tracks on the periphery of the lamp panel are formed after the direct-current power supply is switched on, and a blue light conducting path 9 is formed after repeated refraction of the yellow silica gel layer 8, so that the blue light conducting path is fully converted into white light acceptable by human eyes, and the bad phenomenon of blue edges around the backlight source is improved.

Compare in traditional blue limit solution at membrane material class edge silk screen printing yellow printing, this scheme is from blue light emitting chip 10 sources, sends the very first time at the blue light and carries out the neutralization of yellow silica gel layer 8 and supply, can effectively avoid membrane material tissue in-process to take place to squint and influence the blue light conversion phenomenon of effect inadequately.

In the fourth diagram, the value a is the thickness of the yellow silica gel layer 8, the value b is the width of the yellow silica gel layer 8, the values a and b are designed according to different product structures, and the theoretical value a is 0.2 mm; b is 0.6 mm.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a Mini LED backlight improves side edge bluing structure which characterized in that, includes light source base plate (11), be provided with yellow silica gel layer (8) around the top of light source base plate (11), yellow silica gel layer (8) are the closed ring, the cross section of yellow silica gel layer (8) is the L type.

2. The Mini LED backlight source with the improved side edge bluing structure of claim 1, wherein a blue light emitting chip (10) is disposed on one side of the light source substrate (11) close to the display area.

3. The Mini LED backlight source structure for improving the blue emission at the side edge of the LED backlight source as claimed in claim 2, wherein a plurality of blue light emitting chips (10) are provided.

4. The Mini LED backlight source of claim 2, wherein the blue light emitting chips (10) are uniformly distributed on the light source substrate (11) in an array.

5. The Mini LED backlight source structure for improving the blue emission of the side edge of the LED backlight source as claimed in claim 2, wherein the blue light emitting chip (10) is bound on the FPC/PCB circuit board by SMT process.

6. The Mini LED backlight source of claim 2, wherein the blue light emitted from the blue light emitting chip (10) is refracted by the yellow silica gel layer (8) to form a blue light conducting path (9).