CN103246110A - LED light source, manufacturing method thereof, LED backlight and display device - Google Patents
LED light source, manufacturing method thereof, LED backlight and display device Download PDFInfo
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- CN103246110A CN103246110A CN2013101502195A CN201310150219A CN103246110A CN 103246110 A CN103246110 A CN 103246110A CN 2013101502195 A CN2013101502195 A CN 2013101502195A CN 201310150219 A CN201310150219 A CN 201310150219A CN 103246110 A CN103246110 A CN 103246110A
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Abstract
The invention discloses an LED light source, a manufacturing method thereof, LED backlight and a display device and is designed aiming at solving problems of high LED scrappage rate, poor economic benefit, complexity in white balance adjusting and the like in the prior art. The LED light source comprises a plurality of LEDs and an LED mounting member, the LEDs are at least two LEDs in different chromaticities and/or brightnesses BIN, and the LEDs with different BINs are uniformly distributed on the LED mounting member in a staggered manner. The LED light source manufacturing method includes step 1, selecting the LEDs at least in two different chromaticities and/or brightnesses Bin; and step 2, uniformly mounting the LEDs in different BINs on the LED mounting member in a staggered manner. The LED light source, the manufacturing method thereof, the LED backlight and the display device have the advantages that the LEDs are high in effective utilization rate, good in economic benefit, high in uniformity of chromaticity and brightness, and simple and convenient for white balance adjusting.
Description
Technical field
The present invention relates to optical field, relate in particular to a kind of led light source and preparation method thereof, LED-backlit and display device.
Background technology
After LED completes, can carry out branch BIN according to the parameter of LED itself such as colourity, brightness, voltage and wavelength and namely be divided into several gears.
Common existing led light source comprises some LED and lamp bar or lamp plate, and for brightness and the colourity consistance that guarantees same led light source, all LED have constituted single BIN led light source all from same colourity and brightness BIN.
Yet the led light source of above-mentioned single BIN has following deficiency:
First: the availability of LED is low, and the number deficiency of the LED in same BIN occurring must be discarded this partial L ED when constituting a light source, thereby causes that availability is low, scrappage is high, cost is high and problem such as deficiency in economic performance;
Second: when described led light source be used for to constitute as during the backlight of LCD TV, led light source and liquid crystal panel need adjust required white balance by the white balance program after making up.Thereby the number that constitutes the BIN of led light source has directly determined the number of the white balance kind of the required correspondence of white balance program, thereby causes the white balance kind numerous and diverse, and white balance adjusting is loaded down with trivial details.
Summary of the invention
(1) goal of the invention
At the problems referred to above, the present invention aim to provide a kind of LED availability height, scrappage little, be used for led light source that white balance adjusting is easy when arranging in pairs or groups with the passive type panel and preparation method thereof, LED-backlit and display device.
(2) technical scheme
For reaching above-mentioned purpose, led light source of the present invention comprises some LED and LED fabricated section, and described some LED are at least from the LED of two different colourities and/or brightness BIN, and the LED of different B IN evenly is interspersed on described LED fabricated section.
Preferably,
Neither satisfy with the colour difference between the LED of colourity BIN arbitrarily | Δ X|≤0.02 and | Δ Y|≤0.036;
Described Δ X is two LED correspondences differences on the X-axis in colourity BIN areal map; Described Δ Y is two LED correspondences differences on the Y-axis in colourity BIN areal map.
Preferably, the mixing chromatic value that forms after the LED of different colourity BIN mixes and the colour difference of specified chromatic value satisfy | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072;
Wherein, described Δ X
1For mixing chromatic value and specified chromatic value difference on the X-axis in colourity BIN areal map, described Δ Y
1For mixing chromatic value and specified chromatic value difference on the Y-axis in colourity BIN areal map.
Preferably, luminance difference between the LED of any two different brightness BIN | LV|≤2000MCD.
Preferably, the mixed brightness value that the LED of different brightness mixes back formation is not less than the nominal brightness value, and luminance difference | LV|≤3000MCD
For reaching above-mentioned purpose, LED-backlit of the present invention comprises led light source, it is characterized in that, described led light source is the led light source of the above.
Further, described LED-backlit is straight-down negative, side entering type or hybrid backlight.
For reaching above-mentioned purpose, display device of the present invention comprises backlightly, it is characterized in that, described backlight be the LED-backlit of the above.
Further, described display device is liquid crystal indicator, comprises the display panels that is positioned at described LED-backlit top.
For reaching above-mentioned purpose, led light source method for making of the present invention is characterized in that, may further comprise the steps:
Step 1: select some LED; Described some LED are at least from the LED of two different colourities and/or brightness BIN,
Step 2: with even staggered being installed on the LED fabricated section of the LED of different B IN.
Preferably, neither satisfy with the colour difference between the LED of colourity BIN arbitrarily | Δ X|≤0.02 and | Δ Y|≤0.036;
Described Δ X is two LED correspondences differences on the X-axis in colourity BIN areal map; Described Δ Y is two LED correspondences differences on the Y-axis in colourity BIN areal map.
12, according to the described led light source method for making of claim 11, it is characterized in that described step 1 also comprises:
Steps A: draft several and mix chromatic value; The colour difference of mixing chromatic value and specified chromatic value satisfies | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072;
Described Δ X
1For mixing chromatic value and specified chromatic value difference on the X-axis in colourity BIN areal map, described Δ Y
1For mixing chromatic value and specified chromatic value difference on the Y-axis in colourity BIN areal map;
The mixed chromatic value of the LED of different colourity BIN is one of them or described specified chromatic value of above-mentioned some mixing chromatic values on the described led light source.
Preferably, luminance difference between the LED of any two different brightness BIN | LV|≤2000MCD;
Preferably, described step 1 also comprises:
Step B: draft several mixed brightness values, the mixed brightness value is not less than the nominal brightness value, and luminance difference | LV|≤3000MCD
One of them that the back brightness value that forms of the LED of different brightness mixing is above-mentioned some mixed brightness values on the described led light source or described nominal brightness value.
(3) beneficial effect of led light source of the present invention and preparation method thereof, LED-backlit and display device
First: led light source of the present invention and preparation method thereof, LED-backlit and display device, the LED of the led light source that is used for etc. has selected different colourity BIN or different brightness BIN or both also LED of different brightness BIN of different brightness for use, thereby avoided the led light source of traditional single BIN, the waste of the LED that causes, thereby improved the LED availability, thereby reduced cost of manufacture;
Second: because the LED of the LED of different colourity BIN or different brightness BIN or not only different brightness BIN but also different colourity BIN mixes the led light source that the back is formed, colour difference between light source and the light source has reduced, carry out white balance adjusting thereby can share same white balance kind, so reduced kind and the complexity of white balance adjusting;
The 3rd, because the LED of different B IN evenly is interspersed on fabricated section, thereby make that colourity and the luminance mix of LED of different B IN is even, thereby have colourity, advantage that the brightness homogeneity is good.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention one described led light source;
Fig. 2 is the structural representation of the embodiment of the invention two described led light sources;
Fig. 3 is the structural representation of the embodiment of the invention three described led light sources;
Fig. 4 is the embodiment of the invention eight described LED colourity BIN areal maps;
Fig. 5 is the embodiment of the invention ten described LED colourity BIN areal maps.
Embodiment
Human eye is higher to the recognition capability of bright difference and colourity, and it is bright poor that LED wavelength, colourity can cause aberration and brightness and voltage to cause, and for aberration and the bright difference that makes the light source of being produced by LED lamp source is little, need carries out LED usually and divide BIN.Use by the LED that selects same BIN for use, concrete branch BIN method comprises two kinds at least again: first kind is before the LED encapsulation, and led chip is carried out branch BIN, and the LED that is gone out by different B IN chip manufacturing belongs to different BIN naturally; Second kind is to carry out branch BIN after the LED encapsulation; Divide the standard of BIN that industry standard and company standard are arranged; The equipment such as the LED side test separator that divide BIN to use carry out branch BIN to LED from wavelength, colourity, brightness and voltage according to default standard.
The present invention divides under the background of BIN at LED, to improve the LED effective rate of utilization in order reaching, to reduce production costs, simultaneously for as during liquid crystal panel collocation use, reduce the complexity of white balance adjusting, led light source of the present invention and preparation method thereof, LED-backlit and display device, under the situation that satisfies the ND colour difference of eyesight and luminance difference, with two or more different colourity BIN or different brightness BIN or neither with the LED of colourity BIN and different brightness BIN at LED fabricated section mixing piece.
At first, described led light source is to be formed by mixed BIN piece, not only inherited the good advantage of device colourity and brightness homogeneity with respect to the led light source of traditional single BIN, avoided reducing the scrappage of LED simultaneously, as when the colourity of a certain BIN or brightness are undesirable, scrapping, or rest parts also needs to scrap when being not enough to make a light source, and the present invention has well solved above-mentioned wasting phenomenon by mixing BIN, thereby reduced production cost;
Secondly, the LED of different B IN evenly is interspersed during piece, has so just well played the effect of abundant mixing colourity and brightness, thereby has guaranteed to form on the whole erection part colourity and brightness homogeneity,
Again, owing to by mixing BIN, make that mixing chromatic value and the mixed brightness value between the led light source that forms assembled, thereby can share the white balance kind, thereby reduced the kind of white balance, reduced the loaded down with trivial details degree of white balance adjusting.
The present invention is described further below in conjunction with Figure of description and embodiment.
Embodiment one:
The present embodiment led light source comprises some LED and LED fabricated section, and described some LED are at least from the LED of two different colourities and/or brightness BIN, and the LED of different B IN evenly is interspersed on described LED fabricated section; Be in the described led light source of present embodiment LED may from plural different colourity BIN or from different brightness BIN more than two or from more than two different colourity BIN the time again from different brightness BIN more than two; Described LED fabricated section can be lamp plate or lamp bar;
Further, neither satisfy with the colour difference between the LED of colourity BIN arbitrarily | Δ X|≤0.02 and | Δ Y|≤0.036; Described Δ X is two LED correspondences differences on the X-axis in colourity BIN areal map; Described Δ Y is two LED correspondences differences on the Y-axis in colourity BIN areal map; Above-mentioned colour difference is being the aberration that human eyesight is difficult for discovering, thereby can not produce obvious aberration; Cause regional colourity inequality for the LED that prevents same colourity BIN concentrates to distribute, stipulated further that in the present embodiment different colourity BIN evenly are interspersed on the LED fabricated section;
Further, luminance difference between the LED of any two different brightness BIN | LV|≤2000MCD.
As the further improvement of present embodiment,
A concrete instantiation that is illustrated in figure 1 as led light source shown in the present embodiment comprises several LED and the lamp bar that is used for installing LED; Described some LED are from two different colourity BIN, as LED01 and LED02 from different colourity BIN; And the LED of different colourity BIN is staggered to be evenly distributed on the described lamp bar, thereby can form the led light source of the mixed BIN of colourity homogeneous.How concrete LED divides the colour difference between BIN, adjacent two BIN that detailed regulation is all arranged in the prior art, is not just giving unnecessary details again.Label 03 is the lamp bar socket of the described led light source of this example.
In this simultaneously, it is satisfied with the colour difference of specified chromatic value neither to mix the mixing chromatic value that the back forms with the LED of the BIN of colourity | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072; Described Δ X
1For mixing chromatic value and specified chromatic value difference on the X-axis in colourity BIN areal map, described Δ Y
1For mixing chromatic value and specified chromatic value difference on the Y-axis in colourity BIN areal map.Be that LED01 must satisfy with the mixed specified chromatic value that mixes chromatic value and led light source of LED02 | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072, the selection of this colourity difference be not only taken into full account that eyesight can distinguish can degree of difference, and considered that fully the present embodiment led light source is used for subsequent product, share white balance, with the kind that reduces white balance and the complexity of adjusting.
Comprehensively above-mentioned, the described led light source of present embodiment is included in the some LED of different B IN in colourity and/or the brightness, again by even staggered piece on the LED fabricated section, after at first having guaranteed to mix, can not concentrate aberration or the luminance difference that distributes between the zone that causes owing to the LED of same colourity BIN or same brightness BIN, thereby guarantee the homogeneity of colourity and/or brightness; In addition, by mixing BIN, improved the availability of LED, reduced scrappage, thereby reduced production cost, passing through again mixes BIN can reduce colour difference and luminance difference between light source and the light source, thereby can share white balance, thereby can effectively reduce the difficulty of the adjusting of white balance when using with the panel collocation.
Embodiment two:
As shown in Figure 2, the present embodiment led light source comprises some LED and LED fabricated section, and described some LED are at least from the LED of two different brightness BIN, and the LED of different B IN evenly is interspersed on described LED fabricated section; Be LED from different brightness BIN as LED11 and LED12, and staggered being evenly distributed on the fabricated section lamp plate.
Luminance difference between the LED of above-mentioned two different brightness BIN | LV|≤2000MCD.This luminance difference is the luminance difference of experiment back human eyesight undistinguishable.
The described led light source of present embodiment, LED is made up of different brightness BIN, reduced the undesirable and whole probability of scrapping of a certain brightness BIN, also reduce simultaneously the LED that remains same brightness BIN and be not enough to form scrapping that a led light source brings, thereby will lack scrapping of in brightness LED, thereby reduced cost, improved economic benefit.Be conducive to the even mixing of brightness simultaneously by the LED of the different brightness BIN that evenly are crisscross arranged in this, thereby can obtain the good led light source of brightness homogeneity, mixed BIN by brightness, can be so that more approaching in brightness between the led light source, thereby the light source of the LED of some different brightness can be shared one and balance weighing apparatus, thereby can reduce the kind of white balance.
As the further improvement of present embodiment, the mixed brightness value that the LED of different brightness mixes back formation is not less than the nominal brightness value, and luminance difference | LV|≤3000MCD.The all corresponding nominal brightness value of each led light source, and present embodiment is according to the nominal brightness value, the brightness that employing is higher than part brightness BIN is higher than the nominal brightness value, the brightness that the brightness of part brightness BIN is lower than nominal brightness value or all brightness BIN all is higher than the nominal brightness value, to guarantee that mixed mixing chromatic value is not less than the nominal brightness value, thereby guaranteed minimum brightness, thereby avoided being used for the bad of luminance shortage that follow-up and screen or panel combination cause, by the setting of luminance difference, can guarantee to be unlikely to excessive with the luminance difference of a collection of led light source in addition.
Embodiment three:
As shown in Figure 3, the present embodiment led light source comprises some LED and LED fabricated section, and described some LED are from the LED of three different colourities and brightness BIN, as LED31, LED32 and LED33, the three be both from different colourity BIN also from different brightness BIN; And three neither evenly be interspersed on described LED fabricated section with the LED of colourity also different brightness BIN; Wherein label 34 is the lamp bar socket of present embodiment led light source;
Neither satisfying with the colour difference between the LED of colourity BIN arbitrarily between three different colourity BIN | Δ X|≤0.02 and | Δ Y|≤0.036;
Described Δ X is two LED correspondences differences on the X-axis in colourity BIN areal map; Described Δ Y is two LED correspondences differences on the Y-axis in colourity BIN areal map;
Luminance difference between the LED of any two different brightness BIN between three different colourity BIN | LV|≤2000MCD.
In concrete implementation process, LED on led light source can be from 4,5 or 6 different colourity and/or brightness BIN, concrete how to select can be according to application demand and the actual conditions of LED on brightness and colourity that are used for constituting led light source distribute.
In addition, the mixing chromatic value that forms after the LED of three different colourity BIN mixes and the colour difference of specified chromatic value satisfy | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072;
Wherein, described Δ X
1For mixing chromatic value and specified chromatic value difference on the X-axis in colourity BIN areal map, described Δ Y
1For mixing chromatic value and specified chromatic value difference on the Y-axis in colourity BIN areal map.
The mixed brightness value that the LED of three different brightness mixes back formation is not less than the nominal brightness value.
Embodiment four:
Present embodiment is on the basis of above-described embodiment one to embodiment three arbitrary embodiment, made further improvement, comprehensive above-described embodiment one to embodiment three: in the middle of concrete application, when LED is carried out branch BIN, also wavelength and the corresponding supply voltage according to LED carries out branch BIN, and stability and the simplification in order to power in the present embodiment, the described led light source of present embodiment adopts the LED of same voltage BIN, in order to prevent that colour cast is as red partially or inclined to one side indigo plant, this described LED is from same wavelength BIN and form white LED light source after the combination mutually, yet mix the BIN setting in colourity and/or brightness, thereby made the expanded range of the colourity of the LED can be used for constituting light source and brightness, and colourity and/or the brightness of the led light source after constituting have reduced on the contrary, so not only improved the effective rate of utilization of LED, reduce cost, improved economic benefit, and simplified the adjusting of white balance.
Embodiment five:
The present embodiment LED-backlit comprises the described led light source as above-mentioned each embodiment.The passive type display device that is generally backlight provides light source, generally is positioned at the rear side of display panel.As LCD, form display device such as LCD TV, computer screen with the LED-backlit collocation.In concrete still process, can be divided into light according to the position of described led light source is direct-type backlight, side entrance back or hybrid backlight.
Described direct-type backlight be led light source and backlight in membranous type material (as diffuser plate, prismatic lens etc.) in same perpendicular, the light that sends of led light source is directly upwards to propagate.
Described side entrance back be led light source and backlight in other opticses (as light guide plate, diffusion sheet, prismatic lens etc.) be positioned at same plane, it is the side that led light source is positioned at other opticses, when light propagates into opposite side by optical transmission component such as light guide plate from a side, change the exit direction of light, and final upwards ejaculation.
And shown in hybrid backlight, then be the characteristics that combine above-mentioned direct-type backlight and side entrance back, led light source not only had been distributed in the side of other opticses but also had been distributed in the side of optics simultaneously.
Because the described LED-backlit of present embodiment, adopt led light source of the present invention, thereby it is low, good in economic efficiency to have a cost, white balance adjusting simply has advantage.
Embodiment six:
The present embodiment display device, comprise backlight, described backlight be embodiment five described LED-backlit.In the passive type display device, need provide extra light source to display panel, display device described in the present embodiment adopts led light source of the present invention, display device with respect to traditional employing led light source, it is low to have cost, good in economic efficiency, the easy advantage of white balance adjusting in the production.Described display device can make Electronic Paper, TV, computer or Display Light Box etc.
As present embodiment further, described display device is liquid crystal indicator, comprises the display panels that is positioned at described LED-backlit top.Liquid crystal indicator has advantages such as display effect is good, application is general just, volume is little, in order further to save the cost of the liquid crystal indicator of arranging in pairs or groups with led light source, adopts LED-backlit of the present invention.Described liquid crystal indicator can be that the 2D liquid crystal indicator also can be the 3D liquid crystal indicator.Display device as adopting LED-backlit of the present invention has all advantages that led light source of the present invention and LED-backlit are enjoyed.
Embodiment seven:
Present embodiment led light source method for making is applied to make above-described embodiment one to embodiment three described led light source and may further comprise the steps:
Step 1: select some LED; Described some LED are at least from the LED of two different colourities and/or brightness BIN, in traditional led light source method for making, usually adopt the LED from same colourity BIN, same brightness BIN, so just limited to the selection of the LED that is used for the making led light source, the consequence that causes is that the LED effective rate of utilization is low, the production cost height, economic benefit is low; And implement in the described led light source method for making at this, the LED of selection is from the LED of different colourities more than at least two and/or brightness BIN; Yet need follow following principle when selecting LED:
Neither satisfy with the colour difference between the LED of colourity BIN arbitrarily | Δ X|≤0.02 and | Δ Y|≤0.036; Described Δ X is two LED correspondences differences on the X-axis in colourity BIN areal map; Described Δ Y is two LED correspondences differences on the Y-axis in colourity BIN areal map;
Luminance difference between the LED of any two different brightness BIN | LV|≤2000MCD;
Above-mentioned luminance difference and colour difference are the subtle differences that goes out of human eye, in order to guarantee the homogeneity of colourity, brightness.
Step 2: with even staggered being installed on the LED fabricated section of the LED of different B IN.Distribution by evenly staggered makes the LED of different brightness BIN and/or the LED of different brightness BIN mix, and further guarantees the homogeneity of colourity and brightness.
By the described led light source method for making of present embodiment, the led light source of made is in the colourity of the led light source of having inherited traditional single BIN, brightness homogeneity, usable LED colourity and/or brightness range have been enlarged, and the colour mixture degree by mixing BIN and/or mixed brightness have reached the colour difference of dwindling between the led light source and/or the effect of luminance difference, thereby it is when using with the panel collocation, easier when regulating white balance.
Embodiment eight:
Present embodiment led light source method for making may further comprise the steps;
Step 1.1: draft several and mix chromatic value; The colour difference of mixing chromatic value and specified chromatic value satisfies | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072;
Described Δ X
1For mixing chromatic value and specified chromatic value difference on the X-axis in colourity BIN areal map, described Δ Y
1For mixing chromatic value and specified chromatic value difference on the Y-axis in colourity BIN areal map;
Step 1.2: select some LED; Described some LED are at least from the LED of two different colourities and/or brightness BIN;
The mixed chromatic value of the LED of different colourity BIN is above-mentioned arbitrary mixing chromatic value or is specified chromatic value on the described led light source;
Step 2: with even staggered being installed on the LED fabricated section of the LED of different B IN.
Specifically as shown in Figure 4, in the system of chromatic coordinates that is constituted by X and Y-axis, mark some colourity BIN; Wherein alphabetical Q, R, S, T, U, V, W, X, Y, Z, A, B, C and D are used for each colourity group of sign among the figure, and be equipped with 5 colourity BIN in each colourity group, respectively by 1,2,3,4 and 5 totally five labels represent that the colourity BIN of the same label of each colourity group is arranged in order and forms a colourity row.The specified chromatic value of the led light source of concrete required making is represented with pentagram and is represented with sequence number 1 for the central value of A3 colourity BIN among the figure, the black round dot that wherein is positioned at described specified chromatic value periphery is respectively 10 mixing chromatic values drafting, and number consecutively 2～11 is mixed and is satisfied the LED that the LED that constitutes one of them mixing chromatic value comprises X2, X3, Y2, Y3, Z2, Z3, A2, A3, B2, B3, C2, C3, D2, D3 place chrominance block.
If the LED of the single BIN of employing then only can be the LED by A3 place colourity BIN, then cannot be used for constituting required led light source if produced the LED of other BIN like this, thereby have to scrap or be used for other or stock, thereby cause production cost height or inventory cost height, finally cause economic benefit bad.And the described led light source method for making of present embodiment, carry out the mixing of colourity at least by the LED of two kinds of different colourities, then colourity can be lower than two kinds of LED that specified chromatic value and colourity is higher than specified chromatic value mixes, thereby reach mixing colourity and equal specified chromatic value, thereby improved the utilization rate of LED, mixing chromatic value by match again, expansion again the availability of LED, and because to mix chromatic value satisfied with specified chromatic value | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072, be the colour difference that can not be discovered by eyesight, namely satisfied the colourity demand.Reduce by the colour difference of mixing between the led light source of producing that BIN can make simultaneously, thereby can share same white balance, thereby reduced the white balance kind, reduced the difficulty of white balance adjusting.When described led light source is represented with M, N respectively by two kinds of different colourity BIN() LED when constituting, feasible hybrid plan such as following table:
In the middle of concrete application, single BIN A3, single BIN B3 or single BIN Z3 all can constitute and satisfy the led light source that colourity requires, and do not give unnecessary details at this.
For example, at first, mixing chromatic value 2 is can enjoy the chromatic value of a white balance with specified chromatic value 1; Mix between chromatic value 2 and the specified chromatic value 1 and satisfy | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072, be the colour difference that human eye can not be discovered, thereby can share same white balance;
Secondly, select for use the LED from different B IN to mix, make the chromatic value of mixing equal to mix chromatic value 2; Mix with BIN A3, also can select for use BIN Y3 to mix with B3 for mixing chromatic value 2 optional using from BIN Z3, can also select for use BIN X3 to mix with C3, mix the back and form mixing chromatic value 2; Mix chromatic value 2 and can share same white balance with specified chromatic value 1.
In addition, as shown in Figure 4, mixing chromatic value 4,6 and 7, all to be positioned at by the colourity row of label 2 and label be on the boundary line of 3 colourity row, when being mixed by two BIN, by last table as can be known, be used for blending the mixing chromatic value that is positioned on the colourity row boundary line, two colourity BIN are positioned at the not homonymy of boundary line, and the mixing chromatic value on colourity row boundary line not then is that the LED by the different colourity BIN of same colourity row mixes.
The described led light source method for making of present embodiment, by drafting the mixing chromatic value, again by mixing BIN, it is good not only can to obtain the colourity homogeneity, satisfy the led light source of colourity demand, improved the effective rate of utilization of LED simultaneously, reduced the cost of led light source, when be used for constituting display device simultaneously and the white balance adjusting after the assembling of panel easier.
Embodiment nine:
Present embodiment led light source method for making may further comprise the steps:
Step 1.1: draft several mixed brightness values, and the mixed brightness value is not less than the nominal brightness value, and luminance difference | LV|≤3000MCD
Step 1.2: select the LED of two different brightness BIN for use, mixed brightness value is above-mentioned one of them mixed brightness value or is the nominal brightness value;
Step 2: will evenly interlock piece from the LED of two different brightness BIN on the LED lamp plate or on the lamp bar.
Be that the example that adopts LED from two different brightness BIN to constitute led light source carries out concrete elaboration below:
Following table be the brightness BIN that respectively be used for to make LED with and corresponding brightness value:
| The BIN coding | Minimum luminance value | Maximum brightness value |
| L0 | 28000 | 29000 |
| M0 | 29000 | 30000 |
| N0 | 30000 | 31000 |
| O0 | 31000 | 32000 |
| P0 | 32000 | 33000 |
When the nominal brightness value is the minimum luminance value of BIN M0, draft out 5 mixed brightness values that meet the requirements, when the LED that adopts two brightness BIN mixes, feasible hybrid plan such as following table:
Wherein, if mixed brightness value 1 for the nominal brightness value then mixed brightness value 2,3,4 and 5 be the brightness value of drafting with the certain luminance difference of its maintenance; Select for use the LED of different brightness BIN at fabricated section mixing piece around above-mentioned brightness value again.Concrete as mixed brightness 2, can select for use two brightness BIN of brightness BIN M0 and BIN O0 to form led light source of the present invention.
In concrete application process, also can satisfy brightness requirement as single BIN N0 or single BIN O0, can produce the led light source that meets specified demand, and be based on the led light source of the mixed BIN that improves the LED utilization factor in the present invention, so do not giving unnecessary details again.
Embodiment ten:
Present embodiment led light source method for making may further comprise the steps;
Step 1.1: draft several and mix chromatic value; The colour difference of mixing chromatic value and specified chromatic value satisfies | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072;
Described Δ X
1For mixing chromatic value and specified chromatic value difference on the X-axis in colourity BIN areal map, described Δ Y
1For mixing chromatic value and specified chromatic value difference on the Y-axis in colourity BIN areal map;
Step 1.2: select some LED; Described some LED are at least from the LED of two different colourities and/or brightness BIN;
The mixed chromatic value of the LED of different colourity BIN is above-mentioned arbitrary mixing chromatic value or is specified chromatic value on the described led light source;
Step 2: with even staggered being installed on the LED fabricated section of the LED of different B IN.
As shown in Figure 5, if specified chromatic value is 22, then at first, the mixed brightness value of drafting with specified chromatic value 22 can share a white balance comprises mixes chromatic value 21 and mixed brightness value 23;
Secondly, select for use the LED of three different colourity BIN to be used for making described led light source, wherein the alternative blended scheme of specified chromatic value 21 comprises three kinds; LED or the LED of BIN AB, BIN ZB and three kinds of colourity BIN of BIN BB or the LED of BIN AB, BIN, YB and three kinds of colourity BIN of BIN CB as BIN AB, BIN XB and three kinds of colourity BIN of BIN DB;
Again, with even staggered being installed on the fabricated section of the LED of three kinds of selected different B IN.
The mixing scheme of putting of concrete mixing chromatic value 23 and specified chromatic value 22 is as above shown.
Adopt the described led light source method for making of present embodiment, be mixed with the LED of three kinds of colourity BIN on the led light source of producing, have the advantage that the LED scrappage is low, production cost is low, white balance adjusting is simple and the colourity homogeneity is good.
Embodiment 11:
Present embodiment led light source method for making may further comprise the steps:
Step 1.1: draft several mixed brightness values, and the mixed brightness value is not less than the nominal brightness value, and luminance difference | LV|≤3000MCD
Step 1.2: select the LED of two different brightness BIN for use, mixed brightness value is above-mentioned one of them mixed brightness value or is the nominal brightness value;
Step 2: will evenly interlock piece from the LED of two different brightness BIN on the LED lamp plate or on the lamp bar.
If concrete available brightness BIN such as following table:
If the nominal brightness value is the center brightness value at BIN T280 place, the available mixed brightness value of drafting 2 and match brightness value 3 LED combined hybrid chromatic value and the match brightness value that can select three kinds of brightness BIN for use then, concrete as following table.
Adopt the described led light source method for making of present embodiment, be mixed with the LED of three kinds of brightness BIN on the led light source of producing, have the advantage that the LED scrappage is low, production cost is low, white balance adjusting is simple and the brightness homogeneity is good.
Comprehensively above-mentioned, utilize led light source method for making of the present invention, make led light source, the scrappage of LED is low, availability is high, and cost is low, and is good in economic efficiency, simple and easy to do when being used for carrying out white balance adjusting with liquid crystal panel.
Above embodiment only is used for explanation the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; under the situation that does not break away from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (14)
1. a led light source comprises some LED and LED fabricated section, it is characterized in that, described some LED are at least from the LED of two different colourities and/or brightness BIN, and the LED of different B IN evenly is interspersed on described LED fabricated section.
2. led light source according to claim 1 is characterized in that,
Neither satisfy with the colour difference between the LED of colourity BIN arbitrarily | Δ X|≤0.02 and | Δ Y|≤0.036;
Described Δ X is two LED correspondences differences on the X-axis in colourity BIN areal map; Described Δ Y is two LED correspondences differences on the Y-axis in colourity BIN areal map.
3. led light source according to claim 2 is characterized in that, the LED of different colourity BIN mixes the mixing chromatic value of back formation and the colour difference of specified chromatic value satisfies | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072;
Wherein, described Δ X
1For mixing chromatic value and specified chromatic value difference on the X-axis in colourity BIN areal map, described Δ Y
1For mixing chromatic value and specified chromatic value difference on the Y-axis in colourity BIN areal map.
4. according to claim 1,2 or 3 described led light sources, it is characterized in that luminance difference between the LED of any two different brightness BIN | LV|≤2000MCD.
5. led light source according to claim 4 is characterized in that, the mixed brightness value that the LED of different brightness mixes back formation is not less than the nominal brightness value, and luminance difference | LV|≤3000MCD.
6. a LED-backlit comprises led light source, it is characterized in that, described led light source is the arbitrary described led light source of claim 1-5.
7. LED-backlit according to claim 6 is characterized in that, described LED-backlit is straight-down negative, side entering type or hybrid backlight.
8. display device comprises backlightly, it is characterized in that, described backlight be claim 6 or 7 described LED-backlit.
9. display device according to claim 8 is characterized in that, described display device is liquid crystal indicator, comprises the display panels that is positioned at described LED-backlit top.
10. a led light source method for making is characterized in that, may further comprise the steps:
Step 1: select some LED; Described some LED are at least from the LED of two different colourities and/or brightness BIN,
Step 2: with even staggered being installed on the LED fabricated section of the LED of different B IN.
11. led light source method for making according to claim 10 is characterized in that, neither satisfies with the colour difference between the LED of colourity BIN arbitrarily | Δ X|≤0.02 and | Δ Y|≤0.036;
Described Δ X is two LED correspondences differences on the X-axis in colourity BIN areal map; Described Δ Y is two LED correspondences differences on the Y-axis in colourity BIN areal map.
12. according to the described led light source method for making of claim 11, it is characterized in that described step 1 also comprises:
Steps A: draft several and mix chromatic value; The colour difference of mixing chromatic value and specified chromatic value satisfies | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072;
Described Δ X
1For mixing chromatic value and specified chromatic value difference on the X-axis in colourity BIN areal map, described Δ Y
1For mixing chromatic value and specified chromatic value difference on the Y-axis in colourity BIN areal map;
The mixed chromatic value of the LED of different colourity BIN is one of them or described specified chromatic value of above-mentioned some mixing chromatic values on the described led light source.
13. according to claim 10,11 or 12 described led light source method for makings, it is characterized in that luminance difference between the LED of any two different brightness BIN | LV|≤2000MCD.
14. led light source method for making according to claim 13 is characterized in that, described step 1 also comprises:
Step B: draft several mixed brightness values, the mixed brightness value is not less than the nominal brightness value, and luminance difference | LV|≤3000MCD
One of them that the back brightness value that forms of the LED of different brightness mixing is above-mentioned some mixed brightness values on the described led light source or described nominal brightness value.
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Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee after: Hisense Video Technology Co.,Ltd. Address before: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee before: HISENSE ELECTRIC Co.,Ltd. |