CN208569251U - A kind of backlight module - Google Patents

Abstract

The utility model is suitable for backlight technology field, provides a kind of backlight module, the light source assembly and leaded light component including backboard, in backboard；The light source assembly includes one or more LED light sources, and the light that the LED light source issues is provided to leaded light component, and the leaded light component provides uniform area source for showing；The LED light source issues near-nature forest light；The relative spectral power of red light is greater than 0.60 in near-nature forest light, and the relative spectral power of cyan light is greater than 0.30, and the relative spectral power of blue light is less than 0.75, and blue light color ratio is less than 5.7% in near-nature forest light.The utility model forms the side that light guide plate is arranged in light source assembly by using LED light source, LED light source issues near-nature forest light, blue light color is reduced than the relative spectral power with 440nm blue light, spectrum is continuous, aobvious finger is higher, it can effectively reduce the eyesight injury to backlight module user, the problems such as preventing long focus electronic product and cause visual fatigue, anomalous trichromatism, myopia.

Description

A kind of backlight module

Technical field

The utility model belongs to backlight technology field, in particular to a kind of backlight module.

Background technique

With the generally use of electronic product, the display panel for providing display function in electronic product has been subjected to getting over Come more concern and exploitation.In existing liquid crystal display device, liquid crystal itself does not shine, and what is relied on is that backlight module provides Area source show image.The light that light source in backlight module issues enters liquid crystal through diffusion etc., by being refracted into people Eye.

Existing backlight module is divided into side entering type and two kinds of straight-down negative according to the difference of light source incidence mode.No matter for which One kind all using white LED light source.But the light source that current backlight module uses, which exists, differs biggish defect.Such as, colour rendering It is lower, image color distortion is generated, contrast is low, and the ratio of blue light relative spectral is higher, eyes is injured, referring to Figure 12.The most The important point, the wavelength of blue light are about 450 between 495nm, it can accelerate the macular area in retina photosensory cell and The oxidative pressure of retinal pigment epithelium and cause to damage, influence to human eyesight and damage are irreversible, wherein with The blue light of 440nm is especially serious to retinal damage.It is obvious especially for the inpairment of vision of youngsters and children, it will lead to Children's anomalous trichromatism, reduces the chromatic discrimination power of children, and leads to the soaring of minor's rate of myopia.With electronic product it is universal, Functional diversities, user also tend to become younger, therefore, it is necessary to carry out to the white light source of the backlight module of electronic product It advanced optimizes, is injured with reducing it to the eyesight of electronic product user, especially low age user.

Utility model content

The purpose of this utility model is to provide a kind of backlight modules, it is intended to solve existing backlight module and injure sternly to eyesight Heavy and bad visual experience technical problem.

The utility model is realized in this way a kind of backlight module, light source assembly including backboard, in backboard is led Optical assembly and optical diaphragm group set on the light-emitting surface side of the leaded light component, the optical diaphragm group include at least one set Diffusion sheet；The light source assembly includes one or more LED light sources, and the light that the LED light source issues is provided to leaded light component, institute It states leaded light component and provides uniform area source for showing；The LED light source issues near-nature forest light；It is red in the near-nature forest light The relative spectral power of light is greater than 0.60；The relative spectral power of cyan light is greater than 0.30 in the near-nature forest light；It is described it is close from The relative spectral power of blue light is less than 0.75 in right light；Blue light color ratio is less than 5.7% in the near-nature forest light；The near-nature forest The relative spectral power of 440nm blue light is lower than 0.65 in light.

The backboard includes bottom plate and the multiple side plates for being connected to the bottom edge, the bottom plate and multiple sides Plate surrounds accommodating chamber, and the light source assembly is set in the accommodating chamber.

The leaded light component includes light guide plate, and the light guide plate is set in the accommodating chamber；The light source assembly correspondence is set In at least side of the light guide plate, each LED light source is made towards the side of the light guide plate, the side of the light guide plate For incidence surface.

The light source assembly is in strip corresponding with the side of light guide plate, pcb board including strip and is arranged in the PCB One or more LED light sources on plate.

The leaded light component includes diffuser plate, and the diffuser plate is carried on multiple side plates of the backboard；The receiving Intracavitary to be additionally provided with reflector plate, the light source assembly is set on the reflector plate, and each LED light source is towards the diffuser plate Bottom surface, the bottom surface of the diffuser plate is as incidence surface.

At least one set of luminescence component that each LED light source includes basal layer, is set on the basal layer, Yi Jiyu The circuit of the luminescence component electrical connection；Luminescence component described in every group includes white-light emitting body and red emitting luminophores, the white light Illuminator includes blue chip and the fluorescent film for covering the blue chip, and the red emitting luminophores include red light chips；It is described The white light of white-light emitting body transmitting is mixed with the feux rouges that the red emitting luminophores emit, and the feux rouges is for compensating the white light phase For the red light portion of natural spectrum missing, near-nature forest light is formed.

The white-light emitting body and red emitting luminophores pass through identical driving current unified driving.

When the colour temperature of the near-nature forest light is 2700K-3000K, the relative spectral power of 440nm blue light is lower than 0.50；

When the colour temperature of the near-nature forest light is 4000K-4200K, the relative spectral power of 440nm blue light is lower than 0.60；

When the colour temperature of the near-nature forest light is 5500K-6000K, the relative spectral power of 440nm blue light is lower than 0.65.

The wave-length coverage of the blue chip is 457.5-480nm；The wave-length coverage of the red light chips is 640- 700nm。

The relative spectral power of orange-colored light is greater than 0.55 in the near-nature forest light；

The relative spectral power of sodium yellow is greater than 0.50 in the near-nature forest light；

The relative spectral power of the near-nature forest light Green light is greater than 0.35；

The relative spectral power of purple light is less than 0.10 in the near-nature forest light.

Backlight module provided by the utility model forms light source assembly using LED light source, and LED light source issues near-nature forest light And it is supplied to light guide plate, the relative spectral power of red light is greater than 0.60 in the near-nature forest light, the relative spectral power of cyan light Greater than 0.30, the relative spectral power of blue light is less than 0.75, relative spectral function of the blue light color ratio less than 5.7%, 440nm blue light Rate is lower than 0.65, compared with existing artificial white light source, reduces blue light color than the relative spectral power with 440nm blue light, light Spectrum is continuous, aobvious finger is higher, can effectively reduce the eyesight injury to backlight module user, prevents long focus electronic product and make The problems such as at visual fatigue, anomalous trichromatism, myopia.

Detailed description of the invention

Fig. 1 is the structural decomposition diagram for the backlight module that the utility model first embodiment provides；

Fig. 2 is the schematic diagram of the section structure for the backlight module that the utility model first embodiment provides；

Fig. 3 is the structural decomposition diagram for the backlight module that the utility model second embodiment provides；

Fig. 4 is the schematic diagram of the section structure for the backlight module that the utility model second embodiment provides；

Fig. 5 is the schematic perspective view of LED light source provided by the embodiment of the utility model；

Fig. 6 is the top view of LED light source provided by the embodiment of the utility model；

Fig. 7 is the sectional view along A-A of LED light source provided by the embodiment of the utility model；

Fig. 8 is the bottom view of LED light source provided by the embodiment of the utility model；

Fig. 9 is the spectral schematic of near-nature forest light provided by the embodiment of the utility model；

Figure 10 is the spectrum test report figure of near-nature forest light shown in Fig. 9；

Figure 11 is the spectrum comparison diagram of near-nature forest radiant provided by the embodiment of the utility model and natural light；

Figure 12 is the spectrum comparison diagram of existing near-nature forest radiant and natural light；

Figure 13 is the spectrogram of white-light emitting body provided by the embodiment of the utility model；

Figure 14 is the white-light spectrum figure provided by the embodiment of the utility model using 452.5-455nm blue chip；

Figure 15 is a kind of spectrogram of near-nature forest radiant in the prior art.

Meaning marked in the figure are as follows:

Backlight module 100, backboard 1, accommodating chamber 10, bottom plate 11, side plate 12, glue frame 4, leaded light component 30, light guide plate 31 expand Fall apart 32, light source assembly 2, LED light source 22, pcb board 21, reflector plate 6, cooling fin 7, optical diaphragm group 5, diffusion sheet 51, prism Piece 52；

White-light emitting body 221, red emitting luminophores 222, circuit board 230, the first pin 231, second pin 232, basal layer 210, reflector 211, reflective surface 2111.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this Utility model is not used to limit the utility model.

It should be noted that when component is referred to as " being fixed on " or " being set to " another component, it can directly or It connects on another component.When a component is known as " being connected to " another component, it be can be directly or indirectly It is connected on another component.The orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right" is based on attached drawing Shown in orientation or positional relationship, be merely for convenience of describing, rather than the device or element of indication or suggestion meaning must have There is specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to this patent.Term " first ", " second " is used merely to facilitate description purpose, is not understood to indicate or imply relative importance or implicitly indicates technical characteristic Quantity.The meaning of " plurality " is two or more, unless otherwise specifically defined.

In order to illustrate technical solution described in the utility model, carried out specifically below in conjunction with specific accompanying drawings and embodiments It is bright.

Please refer to Fig. 2 to Fig. 5 and Figure 11, the utility model provides a kind of backlight module 100, including backboard 1 and sets In light source assembly 2 and leaded light component 30 in backboard 1, light source assembly 2 includes one or more LED light sources 22, and LED light source 22 is sent out Light out is provided to leaded light component 30, and leaded light component 30 provides uniform area source for showing；LED light source 22 issues near-nature forest Light, the relative spectral power of red light is greater than 0.60 in the near-nature forest light, and the relative spectral power of cyan light is greater than 0.30, blue The relative spectral power of light is less than 0.75；Blue light color ratio is less than 5.7% in near-nature forest light.It is guide-lighting in side entrance back module 100 Component 30 is light guide plate 31, and the light-emitting surface of light guide plate 31 is equipped with optical diaphragm group 5, and in the present embodiment, optical diaphragm group 5 is wrapped Include a diffusion sheet 51.There can also be prismatic lens 52 on diffusion sheet 51.

Backlight module 100 provided by the embodiment of the utility model, by using the LED light source 22 that can issue near-nature forest light Light source assembly 2 is formed, near-nature forest light is supplied to leaded light component 30 to form uniform area source for showing, in the near-nature forest light The relative spectral power of red light is greater than 0.60, and the relative spectral power of cyan light is greater than 0.30, the relative spectral function of blue light Rate is less than 0.75, and blue light color ratio compared with existing artificial white light source, reduces blue light color ratio and 440nm is blue less than 5.7% The relative spectral power of light, spectrum is continuous, aobvious finger is higher, can effectively reduce the eyesight injury to 100 user of backlight module, prevents Only long focus electronic product and the problems such as cause visual fatigue, anomalous trichromatism, myopia.

Specifically, Fig. 2 and Fig. 3 are please referred to, is a kind of backlight module 100 of side entering type provided by the utility model.Backboard 1 It is by bottom plate 11 and to be connected to multiple side plates 12 of 11 periphery of bottom plate and constitute, multiple side plates 12 successively connect, and limit receiving Chamber 10.The material of bottom plate 11 can be metal, such as aluminium, stainless steel, guarantee some strength and good heat dissipation performance.

In side entrance back module 100, leaded light component 30 is light guide plate 31, and the material of light guide plate 31 can be light transmission glass Glass is also possible to the plastic materials such as PMMA, PC, PS, PP, PBT, PA, processes through cutting or Shooting Technique.Light guide plate 31 Thickness 1 between 10mm, usually 1 to 5mm, according to the different sizes or specification of backlight module 100, the thickness of light guide plate 31 It can be different.

The bottom surface (towards the side of bottom plate 11) of light guide plate 31 is equipped with multiple reflection sites (not shown), leads for making Light in tabula rasa 31 is transmitted and is emitted forwards.Reflection site can be formed by laser engraving, can also pass through printing etc. Mode makes.

As incidence surface, the side far from bottom surface is light-emitting surface for the side of light guide plate 31.Light source assembly 2 corresponds to light guide plate 31 Side setting, it is in long strip.It specifically may include that pcb board 21 in a strip shape and being set on pcb board 21 is sequentially arranged at intervals One or more LED light sources 22.

Light source assembly 2 can be set in the side of light guide plate 31, also can be set in opposite two sides, can also be four sides It is respectively provided with.Preferred embodiment is that light source assembly 2 is set to the opposite two sides of light guide plate 31, is bilateral incident type structure.

Reflector plate 6 is provided between the bottom surface of light guide plate 31 and the bottom plate 11 of backboard 1, for after reflecting light from light out Face outgoing, prevents light from projecting and losing from bottom surface.It is further provided with cooling fin 7 between reflector plate 6 and backboard 1, comes for making From the heat transfer of light source assembly 2 to backboard 1.The material of cooling fin 7 is metal material, such as aluminium.

Backlight module 100 further includes above the edge of optical diaphragm group 5 or above the edge of light guide plate 31 Glue frame 4 for engaging with backboard 1, the setting of glue frame 4 further protect light guide plate 31 and optical diaphragm group 5, avoid leaded light Stress is damaged due to the cooperation of other structures and backboard 1 in edge for plate 31, optical diaphragm group 5 etc..

Fig. 2 and Fig. 3 are please referred to, is a kind of backlight module 100 of straight-down negative provided by the utility model.Downward back optical mode In group 100, leaded light component 30 includes diffuser plate 32, and diffuser plate 32 is incidence surface close to the side (bottom surface) of bottom plate 11, and enters light The opposite other side in face is light-emitting surface, and diffuser plate 32 is carried on the side plate 12 of backboard 1.Light source assembly 2 is set to the receiving of backboard 1 In chamber 10.Reflector plate 6 is additionally provided in accommodating chamber 10, light source assembly 2 is set on reflector plate 6, one or more 22 courts of LED light source To the bottom surface of diffuser plate 32.Near-nature forest light is refracted into diffuser plate 32 from the bottom surface of diffuser plate 32, to forward pass in diffuser plate 32 It transports to and is emitted by light-emitting surface.Light source assembly 2 includes pcb board 21 and is set to evenly arranged multiple LED light sources on pcb board 21 22.In the case where only having a LED light source 22, it is preferably placed at the center of pcb board 21.It is again provided on diffuser plate 32 Optical diaphragm group 5 can be a diffusion sheet 51 and the prismatic lens 52 on diffusion sheet 51, can also be multiple groups diffusion sheet 51 With the combination of prismatic lens 52, diffusion sheet 51 and prismatic lens 52 are arranged alternately.

Next the structure of the LED light source 22 of the utility model will be described in detail.

The explanation of technical term:

1. relative spectral power:

A kind of spectrum that light source is emitted is frequently not single wavelength, but by the mixed radiation of many different wave lengths institute Composition.The spectral radiance of light source is known as the spectral power distribution of light source by wavelength order and the distribution of each Wavelength strength.

Parameter for characterizing spectral power size is divided into absolute spectral power and relative spectral power.And then absolute spectrum Power distribution curve: refer to curve made by the various wavelength light energy absolute values with spectral radiance；

Relative spectral power distributions curve: referring to that the energy by the various wavelength of radiation of light source spectrum is compared to each other, and makees The spectral power distribution for changing radiant power only within the limits prescribed.The maximum phase of radiant power It is 1 to spectral power, the relative spectral power of other wavelength is respectively less than 1.

2. color ratio:

Any white light can be mixed to get by Red Green Blue with corresponding proportion, in order to indicate that R, G, B three primary colors are each Relative scale in comfortable white light total amount introduces chromaticity coordinate r, g, b, wherein r=R/ (R+G+B), g=G/ (R+G+B), b= B/ (R+G+B), r+g+b=1, r, g, b are respectively red light color ratio, green light color ratio, blue light color ratio.

LED light source includes basal layer 210, the luminous group of at least one set being set on basal layer 210 referring to FIG. 1 to FIG. 4, Part, and the circuit board 230 being electrically connected with luminescence component；Every group of luminescence component includes 221 white-light emitting body 221 of white-light emitting body With red emitting luminophores 222,221 white-light emitting body 221 of white-light emitting body includes the fluorescent film of blue chip and covering blue chip, Red emitting luminophores 222 include red light chips；The feux rouges that the white light and red emitting luminophores 222 that white-light emitting body 221 emits emit is mixed It closes, feux rouges forms near-nature forest light for compensating the red light portion that white light is lacked relative to natural spectrum；Red light in near-nature forest light Relative spectral power be greater than 0.60；The relative spectral power of cyan light is greater than 0.30 in near-nature forest light；It is blue in near-nature forest light The relative spectral power of light is less than 0.75.

Further, the blue light of 440nm is maximum to the injury of eyesight in blue light, as further prioritization scheme, this reality Example is applied also using the relative spectral power of 440nm blue light as optical parameter to be detected.The case where blue light color ratio is lower than 5.7% Under, the relative spectral power of 440nm blue light is lower than 0.65.It is 2700K-3000K in the colour temperature of the near-nature forest light of the utility model When, the relative spectral power of 440nm blue light is lower than 0.50, when the colour temperature of near-nature forest light is 4000K-4200K, 440nm blue light Relative spectral power is lower than 0.60, and when the colour temperature of near-nature forest light is 5500K-6000K, the relative spectral power of 440nm blue light is low In 0.65.This is that existing backlight module is difficult to realize.In existing backlight module, blue light color ratio is although lower, still The inhibition for wherein injuring maximum 440nm blue light to human eye is not obvious, and eye-protecting function is very little.And other waves in blue light Segment components are necessary visual acuity, and significantly inhibiting blue light, not only eyeshield effect is unobvious, can also be to children, child et al. The visual acuity of group causes adverse effect, such as due to the excessive missing of blue light ingredient, leads to anomalous trichromatism, and chromatic discrimination power decline etc. is asked Topic.The present embodiment by blue light color ratio be reduced to 5.7% it is below on the basis of, emphasis inhibit 440nm blue light intensity, Neng Gouzhen Positive plays the role of protection eyesight.

Further, the LED light source of the utility model is in the case where spectrum and optical parameter are all satisfied requirement, 640- The relative spectral power of 700nm feux rouges is obviously improved.Such as Fig. 6, wavelength is the feux rouges relative spectral function of 680~690nm Rate is greater than 0.80；The feux rouges relative spectral power that wavelength is 622~680nm is greater than 0.60.Such as Fig. 9 and Figure 14, traditional near-nature forest Radiant the trend being decreased obviously can occur in the wave band after 640nm.640-700nm feux rouges has excellent health-care effect.

Specifically, as described above, the basic support construction of the LED light source of the utility model is basal layer 210, luminescence component It is arranged on basal layer 210, the quantity of luminescence component is one group, two or more groups, and the structure and function of each luminescence component is all It is consistent.The present embodiment is preferably one group.Each group of luminescence component all includes white-light emitting body 221 and red emitting luminophores 222, That is, the LED light source of the utility model, which issues near-nature forest light, to be realized by the mixing of white light and feux rouges.Wherein, feux rouges is used for The part that compensation white light is lacked relative to natural spectrum, and then form the near-nature forest light close to natural light.The white-light emitting body 221 include blue chip and the fluorescent film for covering blue chip, and red emitting luminophores 222 include at least red light chips, pass through fluorescence The monochromatic light that film issues blue chip carries out wavelength convert, generates other coloured light, forms white light after a variety of Colored light mixings, this is white Near-nature forest light is formed after light and feux rouges mixing.The near-nature forest light has following spectrum parameter, and the relative spectral power of red light is big In 0.60；The relative spectral power of cyan light is greater than 0.30；The relative spectral power of blue light is less than 0.75.Every group of luminescence component Near-nature forest light can be issued, therefore in the case where the LED light source of the utility model contains multi-group light-emitting component, same energy Enough issue near-nature forest light.

The wave-length coverage of various coloured light is as follows in visible light: red light (622~700nm), orange-colored light (597~622nm), Sodium yellow (577~597nm), green light (492~577nm), cyan light (475~492nm), blue light (435~475nm), Purple light (380~435nm).

Such as Fig. 6 to Fig. 8, the spectrogram and spectrum test data of near-nature forest light are respectively illustrated, can be seen that by the figure The spectrum meets the spectrum parameter of above-mentioned feux rouges, green light and blue light, in addition, the ratio of blue light is lowered, close to natural light Health is also helped simultaneously.With reference to Fig. 9, existing near-nature forest light spectrum and natural light spectrum still gap are larger, blue light ingredient It is higher while clearly disadvantageous in red light portion and the appearance of green light part.This light source is used for backlight module, will lead to pattern colour Spend the problems such as contrast is lower, and color is untrue.

Backlight module provided by the embodiment of the utility model at least has the effect that

First, the LED light source which uses issues near-nature forest light, illuminates, is more nearly compared to conventional white light Natural light, blue light is lower, and visual experience is more comfortable, is conducive to protect eyesight, especially child and children's vision, also help It reduces due to the excessively high caused inferior health problem of blue light.

Second, which can control blue light relative spectral power in the case where keeping high color temperature and be in lower water It is flat, eyeshield can be taken into account and promote the display effect of image.

Third improves green light relative spectral power while reducing blue light, so that near-nature forest light is more nearly really Natural light, but also colour rendering index is further promoted, image color is truer.

In the present embodiment, the wave-length coverage of the blue chip is 450-480nm；The wave-length coverage of red light chips is 640- 700nm, the central wavelength of red light chips are preferably 690 ± 5nm.Preferably, the wave-length coverage of blue chip is 457.5- 480nm, at least 457.5-460nm.The utility model embodiment breaks through orthodox practice (using 450-455nm blue chip), The blue chip for having selected 457.5nm-480nm, in conjunction with fluorescent film, work along both lines so that the relative spectral power of green light obtain it is bright It is aobvious to be promoted.Simultaneously because the promotion of green light, while promoting aobvious finger R12.Green light relative spectral such as Figure 13, in traditional near-nature forest light Power is lower than 0.3, and such as Fig. 8 and Fig. 9, the green light relative spectral power in the present embodiment reaches 0.4 or more.

It show the spectrum of white-light emitting body 221 in the present embodiment with further reference to Figure 13 and Figure 14, Figure 13, uses When the blue chip of 457.5nm-460nm, green light relative spectral power has reached 0.5 or more, such as uses 457.5nm-480nm Blue chip, green light relative spectral power can promote further.It is green when using 452.5-455nm blue chip in Figure 14 Light relative spectral is only between 0.35-0.38.

By the white light for selecting above-mentioned blue chip to obtain, spectrum is as shown in Figure 10.It is with following optical parameter: color When temperature is 2700K-3000K, the relative spectral power of 480-500nm wave band is greater than 0.30；The relative spectral of 500-640nm wave band Power is greater than 0.70；When colour temperature is 4000K-4200K, the relative spectral power of 480-500nm wave band is greater than 0.45；500- The relative spectral power of 640nm wave band is greater than 0.65；When colour temperature is 5500K-6000K, the relative spectral function of 480-500nm wave band Rate is greater than 0.4；The relative spectral power of 500-640nm wave band is greater than 0.60.This white-light emitting body 221 and above-mentioned red light-emitting Body 222 combines, and available LED light source can issue near-nature forest light.

Further, with reference to Fig. 8 and Fig. 9, the spectrum of the LED light source of the utility model its all band also with natural optrode Its is similar, and existing near-nature forest radiant is then difficult to realize.Such as Fig. 6 and Fig. 7, the relative spectral power of orange-colored light in near-nature forest light Greater than 0.55；The relative spectral power of sodium yellow is greater than 0.50；The relative spectral power of green light is greater than 0.35；The phase of purple light It is close with natural light to spectral power less than 0.10.For backlight module, more comfortable visual impression can be provided for user By not easy to fatigue.

In addition, the LED light source of the utility model while each band spectrum more optimizes, also has stringent Optical Parametric Number requires, such as colour temperature, color tolerance, colour rendering index Ra, colour rendering index R9, colour rendering index R12 and blue light color ratio etc..Specifically The colour temperature on ground, near-nature forest light includes 2500K-6500K, and color tolerance is less than 5, and blue light color ratio is less than 5.7%.It is aobvious to refer to that Ra is greater than 95, Wherein, aobvious finger of the aobvious finger of R9 greater than 90, R12 is greater than 80.It can determine that the LED light source of the utility model can expire according to Fig. 7 Sufficient above-mentioned requirements, and the blue light color ratio of the LED light source of the utility model can be reduced to 5.5% hereinafter, colour rendering index Ra is mentioned Height is to 97 or more, and colour rendering index R9 reaches 95 or more, and colour rendering index R12 has reached 83, in other test report, colour rendering index R12 can achieve 87.

The utility model preferably uses miniature white-light emitting body 221 and red emitting luminophores 222, according to light flux ratio and peace It fills the size selection small dimension in space and the higher blue chip of cost performance and red light chips, preferential selection feux rouges few as far as possible is sent out Body of light 222 and white-light emitting body 221, are fabricated to single light source, and one group of luminescence component is arranged in a light source.Since the light source can be with Near-nature forest light is directly issued, and then can be used in various lamps and lanterns, any combination, can guarantee its preferable illumination effect, is fitted Ying Xingqiang.It is of course also possible to which multi-group light-emitting component is integrated in a light source, preferable light-out effect still can guarantee at this time, Only size increases.

Preferably, white-light emitting body 221 and red emitting luminophores 222 can use the miniature illuminator for meeting performance requirement, The miniature lamp bead of light source generally one, can multiple lamp beads be arranged on the circuit board 230 of various lamps and lanterns with arbitrary form, due to its body Product is small and exquisite, may be disposed at any position of circuit board 230, and flexible in application, lamps and lanterns Integral luminous is uniform, good illumination effect, application In backlight module, the design such as ultra-thin, ultra-narrow frame can be realized.

Specifically, the ratio between light radiation of the luminous flux of the white-light emitting body 221 and red emitting luminophores 222 is 2-10:1, Preferably 2-3:1.Under different colour temperatures, which slightly floats.In one embodiment, the quantity of white-light emitting body 221 Quantity ratio with red emitting luminophores 222 is 1-8:1, further preferably 1-4:1.The light radiation of practical red emitting luminophores 222 For 80-160mW, the total light flux of white-light emitting body 221 is 200-350lm.

In one embodiment, there are four white-light emitting bodies 221, red emitting luminophores 222 have one, four white-light emitting bodies 221 are set to around red emitting luminophores 222 and are uniformly distributed.

In another embodiment, there are two white-light emitting bodies 221, red emitting luminophores 222 have one, two white-light emittings Body 221 is symmetrically disposed on the two sides of red emitting luminophores 222.

About the mounting means of chip, preferably by blue chip and red light chips upside-down mounting in the surface of basal layer 210, upside-down mounting Chip is conducive to effectively connect with the circuit board 230 on basal layer 210, is conducive to high efficiency and heat radiation, can be by equipment in chip Upper unified film forming, guarantees that the fluorescent film consistency of different product is good, and then can cause one to avoid the dispensing process of formal dress chip The problem of cause property difference, meanwhile, so that different product is in same BIN when colour temperature is identical, colour temperature consistency is good.

In addition, flip-chip but also the volume of white-light emitting body 221 further decreases, is conducive to dimension of light source control. In the present embodiment, the width of white-light emitting body 221 is less than 0.8mm, is highly less than 0.3mm, and red emitting luminophores 222 are can be controlled in In same range.Adjacent white-light emitting body 221 and 222 spacing of red emitting luminophores is 1mm or less.The LED light of the utility model The length in source is less than or equal to 6mm, and width is less than 3mm.

Certainly, the utility model is not limited to using flip-chip, is also feasible using positive cartridge chip.

In one embodiment, basal layer 210 is preferably the lamellar structure of nonmetallic materials production, is set on basal layer 210 There is reflector 211, white-light emitting body 221, red emitting luminophores 222 are set in reflector 211, and circuit board 230 is formed in substrate The surface of layer 210, and the tow sides of basal layer 210 are wrapped in, and pin is formed except reflector 211, reflector 211 Bottom exposed portion circuit board 230, for being connect with white-light emitting body 221 and red emitting luminophores 222.

Further, the inner wall of reflector 211 is equipped with reflective surface 2111, is also filled with packaging plastic inside reflector 211 Body (not shown), reflective surface 2111 is for reflecting white light and feux rouges, and packing colloid is for protecting 211 internal junction of reflector Structure and keep light-source structure more stable, and refraction adjustment is carried out to light.White light and feux rouges be sufficiently mixed after by packing colloid Output.Specifically, the light emitting angle of white-light emitting body 221 and red emitting luminophores 222 can be 160 ° or so to 180 °, light source Light-emitting angle is 120 ° or so.Entire light source is the near-nature forest light lamp bead of small-sized uniformly light-emitting.

In the present embodiment, circuit board 230 has several groups positive and negative anodes pin, can corresponding one group of each illuminator it is positive and negative Pole pin or the corresponding one group of positive and negative anodes pin of several illuminators.In driving method, there are two types of embodiments, first, white light Illuminator 221 and red emitting luminophores 222 are separately connected different positive and negative anodes pins, are operated alone, at this time respective driving current Difference can cooperate control chip to be controlled.Second, white-light emitting body 221 and red emitting luminophores 222 are connected, that is, connect phase Same positive and negative anodes pin, unified same current driving are not required to control chip and are controlled.The mode of this unified driving obviously has There is apparent advantage, do not need to configure different driving currents for different illuminators, does not need to increase control circuit board 230, it is only necessary to power according to its corresponding electric current.Therefore, more simplified in structure, volume further decreases, application Easier to be flexible, cost is lower.This is preferred 230 connection scheme of circuit board of the utility model.

With reference to Fig. 1 and Fig. 2, two white-light emitting bodies 221 and a red emitting luminophores 222 are connected, two white-light emitting bodies 221 are separately connected first pin 231, and 231 self-reflection cup of the first pin, 211 bottom is stretched out, for connecting external power supply.It is red Light illuminator 222 is series between two white-light emitting bodies 221.

Further, which is also provided with second pin 232, which is not used in connection external power supply, But be used to radiate, and promote the symmetry of light source entirety, the stability for promoting intensity and being installed on circuit board 230.

In the present embodiment, the actual ratio of the light radiation of the luminous flux of white-light emitting body 221 and red emitting luminophores 222 For 2-3:1, electric current is between 20-100mA, preferably 60mA.It is preferred that 1-4 white-light emitting body 221 and 1-2 red emitting luminophores 222 light sources in series, the power of single light source are 0.5W or so.In the case that colour temperature is different, real data is slightly not Together.It can according to need the corresponding data for determining several colour temperatures, manufacture corresponding product.For example, being used for the lamps and lanterns of office space, lead to Often the selection higher product of colour temperature generally selects the lower product of colour temperature for the lamps and lanterns of household.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. a kind of backlight module, which is characterized in that light source assembly, leaded light component including backboard, in backboard and be set to The optical diaphragm group of the light-emitting surface side of the leaded light component, the optical diaphragm group include at least one set of diffusion sheet；The light Source component includes one or more LED light sources, and the light that the LED light source issues is provided to leaded light component, and the leaded light component mentions For uniform area source for showing；The LED light source issues near-nature forest light；The relative spectral of red light in the near-nature forest light Power is greater than 0.60；The relative spectral power of cyan light is greater than 0.30 in the near-nature forest light；Blue light in the near-nature forest light Relative spectral power less than 0.75；Blue light color ratio is less than 5.7% in the near-nature forest light；440nm is blue in the near-nature forest light The relative spectral power of light is lower than 0.65.

2. backlight module as described in claim 1, which is characterized in that the backboard includes bottom plate and is connected to the bottom plate Multiple side plates at edge, the bottom plate and multiple side plates surround accommodating chamber, and the light source assembly is set in the accommodating chamber.

3. backlight module as claimed in claim 2, which is characterized in that the leaded light component includes light guide plate, the light guide plate In the accommodating chamber；The light source assembly is correspondingly arranged at at least side of the light guide plate, each LED light source direction The side of the light guide plate, the side of the light guide plate is as incidence surface.

4. backlight module as claimed in claim 3, which is characterized in that the light source assembly is in corresponding with the side of light guide plate Strip, pcb board including strip and the one or more LED light sources being arranged on the pcb board.

5. backlight module as claimed in claim 2, which is characterized in that the leaded light component includes diffuser plate, the diffuser plate It is carried on multiple side plates of the backboard；Each LED light source is towards the bottom surface of the diffuser plate, the bottom of the diffuser plate Face is as incidence surface.

6. backlight module as described in claim 1, which is characterized in that each LED light source includes basal layer, is set to institute State at least one set of luminescence component on basal layer, and the circuit being electrically connected with the luminescence component；Luminescence component described in every group Including white-light emitting body and red emitting luminophores, the white-light emitting body includes blue chip and the fluorescence for covering the blue chip Film, the red emitting luminophores include red light chips；What the white light and the red emitting luminophores of the white-light emitting body transmitting emitted Feux rouges mixing, the feux rouges form near-nature forest light for compensating the red light portion that the white light is lacked relative to natural spectrum.

7. backlight module as claimed in claim 6, which is characterized in that the white-light emitting body and red emitting luminophores pass through identical Driving current unified driving.

8. backlight module as described in claim 1, which is characterized in that

When the colour temperature of the near-nature forest light is 2700K-3000K, the relative spectral power of 440nm blue light is lower than 0.50；

When the colour temperature of the near-nature forest light is 4000K-4200K, the relative spectral power of 440nm blue light is lower than 0.60；

When the colour temperature of the near-nature forest light is 5500K-6000K, the relative spectral power of 440nm blue light is lower than 0.65.

9. backlight module as claimed in claim 6, which is characterized in that the wave-length coverage of the blue chip is 457.5- 480nm；The wave-length coverage of the red light chips is 640-700nm.

10. backlight module as described in claim 1, which is characterized in that the relative spectral function of orange-colored light in the near-nature forest light Rate is greater than 0.55；

The relative spectral power of sodium yellow is greater than 0.50 in the near-nature forest light；

The relative spectral power of the near-nature forest light Green light is greater than 0.35；

The relative spectral power of purple light is less than 0.10 in the near-nature forest light.