CN103246110B - LED light source and preparation method thereof, LED-backlit and display device - Google Patents
LED light source and preparation method thereof, LED-backlit and display device Download PDFInfo
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Abstract
The invention discloses a kind of LED light source and preparation method thereof, LED-backlit and display device, LED scrappage in prior art be high in order to solve, deficiency in economic performance and the problem such as white balance adjusting is loaded down with trivial details and design.Described LED light source comprises some LED and LED fabricated sections, 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 is evenly interspersed on described LED fabricated section.Described LED light source method for making, comprise selection at least from some LED of two different colourities and/or brightness BIN step 1 and the LED of different B IN is evenly staggered installation of the step 2 on LED fabricated section.LED light source of the present invention and preparation method thereof, LED-backlit and display device, have that LED availability is high, good in economic efficiency, chroma luminance homogeneity is good and the advantage that white balance adjusting is easy.
Description
Technical field
The present invention relates to optical field, particularly relate to a kind of LED light source and preparation method thereof, LED-backlit and display device.
Background technology
After LED completes, can namely be divided into several gears according to the parameter of LED itself as colourity, brightness, voltage and wavelength carry out point BIN.
Usual existing LED light source, comprise some LED and lamp bar or lamp plate, in order to ensure brightness and the colourity consistance of same LED light source, all LED, all from same colourity and brightness BIN, constitute single BINLED light source.
But the LED light source of above-mentioned single BIN has following deficiency:
The availability of first: LED is low, when there is the number deficiency of the LED in same BIN to form a light source, must discard this part LED, thus causes that availability is low, scrappage is high, cost is high and the problem such as deficiency in economic performance;
Second: when described LED light source is for forming the backlight as LCD TV, after LED light source and liquid crystal panel combine, need to adjust required white balance by white balance program.Thus the number forming the BIN of LED light source directly determines the number of the required corresponding white balance kind of white balance program, thus cause white balance broad categories, white balance adjusting is loaded down with trivial details.
Summary of the invention
(1) goal of the invention
For the problems referred to above, the present invention aims to provide that a kind of LED availability is high, scrappage is little, for arranging in pairs or groups with passive type panel time white balance adjusting easy LED light source 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 sections, 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 is evenly interspersed on described LED fabricated section.
Preferably,
Arbitrarily neither with colourity BIN LED between colour difference meet | Δ X|≤0.02 and | Δ Y|≤0.036;
Described Δ X is the corresponding differences in colourity BIN areal map in X-axis of two LED; Described Δ Y is the corresponding differences in colourity BIN areal map in Y-axis of two LED.
Preferably, the colour difference of the color mixture angle value and the specified chromatic value that are formed after the LED mixing of different colourity BIN is satisfied | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072;
Wherein, described Δ X
1the difference in colourity BIN areal map in X-axis for color mixture angle value and specified chromatic value, described Δ Y
1the difference in colourity BIN areal map in Y-axis for color mixture angle value and specified chromatic value.
Preferably, luminance difference between the LED of any two different brightness BIN | LV|≤2000MCD.
Preferably, the mixed brightness value formed after the LED mixing of different brightness is not less than nominal luminance 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 upper described LED light source.
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 backlight, it is characterized in that, described backlight is upper described LED-backlit.
Further, described display device is liquid crystal indicator, comprises the display panels be positioned at above described LED-backlit.
For reaching above-mentioned purpose, LED light source method for making of the present invention, is characterized in that, comprise the following steps:
Step 1: select some LED; Described some LED at least from the LED of two different colourities and/or brightness BIN,
Step 2: the LED of different B IN is evenly staggered installation of on LED fabricated section.
Preferably, arbitrarily neither with colourity BIN LED between colour difference meet | Δ X|≤0.02 and | Δ Y|≤0.036;
Described Δ X is the corresponding differences in colourity BIN areal map in X-axis of two LED; Described Δ Y is the corresponding differences in colourity BIN areal map in Y-axis of two LED.
12, according to LED light source method for making described in claim 11, it is characterized in that, described step 1 also comprises:
Steps A: draft several color mixture angle value; The colour difference of color mixture angle value and specified chromatic value meets | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072;
Described Δ X
1the difference in colourity BIN areal map in X-axis for color mixture angle value and specified chromatic value, described Δ Y
1the difference in colourity BIN areal map in Y-axis for color mixture angle value and specified chromatic value;
On described LED light source, the mixed chromatic value of the LED of different colourity BIN is one of them or described specified chromatic value of above-mentioned some color mixture angle value.
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, mixed brightness value is not less than nominal luminance value, and luminance difference | LV|≤3000MCD
The brightness value formed after the LED mixing of different brightness on described LED light source is one of them or described nominal luminance value of above-mentioned some mixed brightness values.
(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, for LED light source in LED etc. selected the LED of different colourity BIN or different brightness BIN or both different brightness also different brightness BIN, thus avoid the LED light source of traditional single BIN, the waste of the LED caused, thus improve LED availability, thus reduce cost of manufacture;
Second: due to the LED of different colourity BIN or different brightness BIN or not only different brightness BIN but also the LED of different colourity BIN mix after the LED light source of composition, colour difference between light source and light source reduces, thus same white balance kind can be shared carry out white balance adjusting, so reduce kind and the complexity of white balance adjusting;
3rd, because the LED of different B IN is evenly interspersed on mountings, thus make the colourity of the LED of different B IN and luminance mix even, thus there is colourity, advantage that brightness homogeneity is good.
Accompanying drawing explanation
Fig. 1 is the structural representation of the LED light source described in the embodiment of the present invention one;
Fig. 2 is the structural representation of the LED light source described in the embodiment of the present invention two;
Fig. 3 is the structural representation of the LED light source described in the embodiment of the present invention three;
Fig. 4 is LED colourity BIN areal map described in the embodiment of the present invention eight;
Fig. 5 is the LED colourity BIN areal map described in the embodiment of the present invention ten.
Embodiment
The recognition capability of human eye to bright difference and colourity is higher, and LED wavelength, colourity can cause aberration and brightness and voltage may cause bright difference, in order to make the aberration of the light source produced by LED lamp source and bright difference little, usually need to carry out LED and divide BIN.Again by selecting the LED of same BIN to apply, a concrete point BIN method at least comprises two kinds: the first is before LED, carries out a point BIN to LED chip, and the LED natural gone out by different B IN chip manufacturing belongs to different BIN; The second carries out a point BIN after LED; The standard of BIN is divided to have industry standard and company standard; The equipment of BIN such as LED side test separator is divided to carry out a point BIN to LED from wavelength, colourity, brightness and voltage according to the standard preset.
The present invention is under LED divides the background of BIN, improving LED effective rate of utilization to reach, reducing production cost, simultaneously in order to such as liquid crystal panel arrange in pairs or groups use time, reduce the complexity of white balance adjusting, LED light source of the present invention and preparation method thereof, LED-backlit and display device, when meeting the ND colour difference of eyesight and luminance difference, by two or more different colourity BIN or different brightness BIN or neither with colourity BIN and the LED of different brightness BIN carries out mixing piece on LED fabricated section.
First, described LED light source is formed by mixed BIN piece, device colourity and the good advantage of brightness homogeneity is not only inherited relative to the LED light source of traditional single BIN, avoid the scrappage reducing LED simultaneously, as when the colourity of a certain BIN or brightness undesirable time must scrap, or remaining part also needs to scrap when being not enough to a making light source, and the present invention well solves above-mentioned wasting phenomenon by mixed BIN, thus reduces production cost;
Secondly, during piece, the LED of different B IN is evenly interspersed, and so just well serves the effect fully mixing colourity and brightness, thus ensure that whole fabricated section forms colourity and brightness homogeneity,
Again, due to by mixed BIN, the color mixture angle value between the LED light source of formation and mixed brightness value are assembled, thus white balance kind can be shared, thus decrease the kind of white balance, reduce the loaded down with trivial details degree of white balance adjusting.
Below in conjunction with Figure of description and embodiment, the present invention is described further.
Embodiment one:
The present embodiment LED light source, comprises some LED and LED fabricated sections, 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 is evenly interspersed on described LED fabricated section; Not only the LED in the LED light source described in the present embodiment may from plural different colourity BIN or from the different brightness BIN of two or more or from while the different colourity BIN of two or more but also from the different brightness BIN of two or more; Described LED fabricated section can be lamp plate or lamp bar;
Further, arbitrarily neither with colourity BIN LED between colour difference meet | Δ X|≤0.02 and | Δ Y|≤0.036; Described Δ X is the corresponding differences in colourity BIN areal map in X-axis of two LED; Described Δ Y is the corresponding differences in colourity BIN areal map in Y-axis of two LED; Above-mentioned colour difference is being the aberration that human eyesight is not easily discovered, thus can not produce obvious aberration; In order to prevent the LED integrated distribution of same colourity BIN from causing area colorimetric uneven, further defining different colourity BIN in the present embodiment and being evenly interspersed on LED fabricated section;
Further, luminance difference between the LED of any two different brightness BIN | LV|≤2000MCD.
As the further improvement of the present embodiment,
The concrete instantiation being illustrated in figure 1 LED light source shown in the present embodiment, comprises several LED and the lamp bar for installing LED; Described some LED from two different colourity BIN, if LED01 and LED02 is from different colourity BIN; And the LED of different colourity BIN is staggered is evenly distributed on described lamp bar, thus the LED light source of the homogeneous mixed BIN of colourity can be formed.How concrete LED divides the colour difference between BIN, adjacent two BIN all to have detailed regulation in the prior art, is not again just repeating.The lamp bar socket that label 03 is the LED light source described in this example.
Simultaneously, neither meet with the colour difference of the color mixture angle value formed after the LED mixing of the BIN of colourity and specified chromatic value | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072; Described Δ X
1the difference in colourity BIN areal map in X-axis for color mixture angle value and specified chromatic value, described Δ Y
1the difference in colourity BIN areal map in Y-axis for color mixture angle value and specified chromatic value.Namely the specified chromatic value of LED01 and LED02 mixed color mixture angle value and LED light source must meet | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072, the selection of this chroma difference be not only taken into full account that eyesight can distinguish can degree of difference, and consider the present embodiment LED light source fully in subsequent product, share white balance, with the complexity of the kind and adjustment that reduce white balance.
Comprehensively above-mentioned, LED light source described in the present embodiment is included in some LED of different B IN in colourity and/or brightness, again by piece evenly staggered on LED fabricated section, first after ensure that mixing, aberration between the region that can not cause due to the LED integrated distribution of same colourity BIN or same brightness BIN or luminance difference, thus ensure that the homogeneity of colourity and/or brightness; In addition, by mixed BIN, improve the availability of LED, decrease scrappage, thus reduce production cost, again can reduce colour difference between light source and light source and luminance difference by mixed BIN, thus can white balance be shared, thus effectively can reduce the difficulty of the adjustment of white balance when using of arranging in pairs or groups with panel.
Embodiment two:
As shown in Figure 2, the present embodiment LED light source, comprises some LED and LED fabricated sections, and described some LED are at least from the LED of two different brightness BIN, and the LED of different B IN is evenly interspersed on described LED fabricated section; As the LED that LED11 and LED12 is from different brightness BIN, and staggered being evenly distributed on 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 human eyesight undistinguishable after experiment.
LED light source described in the present embodiment, LED is made up of different brightness BIN, decrease the undesirable and probability that entirety is scrapped of a certain brightness BIN, what decrease that the LED remaining same brightness BIN is not enough to that composition LED light source brings scraps simultaneously, thus will scrapping of in brightness LED have been lacked, thus reduce cost, improve economic benefit.The Homogeneous phase mixing of brightness is simultaneously conducive to by the LED of the different brightness BIN that is evenly crisscross arranged, thus the good LED light source of brightness homogeneity can be obtained, by the mixed BIN of brightness, can make between LED light source more close in brightness, thus the light source of the LED of some different brightness can share a white balance, thus the kind of white balance can be reduced.
As the further improvement of the present embodiment, the mixed brightness value formed after the LED mixing of different brightness is not less than nominal luminance value, and luminance difference | LV|≤3000MCD.The all corresponding nominal luminance value of each LED light source, and the present embodiment is according to nominal luminance value, adopt higher than the brightness of part luma BIN higher than nominal luminance value, the brightness of part luma BIN lower than the brightness of nominal luminance value or all brightness BIN all higher than nominal luminance value, to ensure that mixed color mixture angle value is not less than nominal luminance value, thus ensure that minimum brightness, thus it is bad to avoid for the follow-up luminance shortage caused with screen or panel combination, in addition by the setting of luminance difference, can ensure to be unlikely to excessive with the luminance difference of a collection of LED light source.
Embodiment three:
As shown in Figure 3, the present embodiment LED light source, comprises some LED and LED fabricated sections, and described some LED are from the LED of three different colourities and brightness BIN, as LED31, LED32 and LED33, three be both from different colourity BIN also from different brightness BIN; And three are neither evenly interspersed on described LED fabricated section with the LED of colourity also different brightness BIN; Wherein label 34 is the lamp bar socket of the present embodiment LED light source;
Between three different colourity BIN arbitrarily neither with colourity BIN LED between colour difference meet | Δ X|≤0.02 and | Δ Y|≤0.036;
Described Δ X is the corresponding differences in colourity BIN areal map in X-axis of two LED; Described Δ Y is the corresponding differences in colourity BIN areal map in Y-axis of two LED;
Luminance difference between the LED of any two different brightness BIN between three different colourity BIN | LV|≤2000MCD.
In concrete implementation process, LED on a LED light source can from 4,5 or 6 different colourities and/or brightness BIN, and concrete how selection can be distributed according to application demand and the actual conditions of LED in brightness and colourity for forming LED light source.
In addition, the colour difference of the color mixture angle value and the specified chromatic value that are formed after the LED mixing of three different colourity BIN is satisfied | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072;
Wherein, described Δ X
1the difference in colourity BIN areal map in X-axis for color mixture angle value and specified chromatic value, described Δ Y
1the difference in colourity BIN areal map in Y-axis for color mixture angle value and specified chromatic value.
The mixed brightness value formed after the LED mixing of three different brightness is not less than nominal luminance value.
Embodiment four:
The present embodiment is on the basis of above-described embodiment one to embodiment three any embodiment, make further improvement, comprehensive above-described embodiment one to embodiment three: in the middle of concrete application, when point BIN is carried out to LED, also carry out a point BIN according to the wavelength of LED and the supply voltage of correspondence, and in order to the stability of powering and simplification in the present embodiment, LED light source described in the present embodiment adopts the LED of same voltage BIN, in order to prevent colour cast as partially red or partially blue, LED described in this from Same Wavelength BIN and mutually forms white LED light source after combination, but in colourity and/or brightness, carry out mixed BIN setting, thus make to can be used for form the colourity of LED of light source and the expanded range of brightness, and the colourity of LED light source after forming and/or brightness reduce on the contrary, not only increase the effective rate of utilization of LED like this, reduce cost, improve economic benefit, and simplify the adjustment of white balance.
Embodiment five:
The present embodiment LED-backlit, comprises the LED light source as described in above-mentioned any one embodiment.Backlight is generally passive type display device and provides light source, is generally positioned at the rear side of display panel.As liquid crystal display, arrange in pairs or groups with LED-backlit and form the display device such as LCD TV, computer screen.In concrete still process, light can be divided into be direct-type backlight, side entrance back or hybrid backlight according to the position of described LED light source.
Described direct-type backlight be membranous type material (as diffuser plate, prismatic lens etc.) in LED light source and backlight in same perpendicular, the light sent of LED light source is directly to upper propagation.
Described side entrance back is that other opticses (as light guide plate, diffusion sheet, prismatic lens etc.) in LED light source and backlight are positioned at same plane, namely LED light source is positioned at the side of other opticses, light by optical transmission component as while light guide plate propagates into opposite side from side, change the exit direction of light, and eventually to upper injection.
And shown hybrid backlight, be then the feature combining above-mentioned direct-type backlight and side entrance back, LED light source is not only distributed in the side of other opticses but also is distributed in the side of optics simultaneously.
Due to the LED-backlit described in the present embodiment, adopt LED light source of the present invention, thus it is low, good in economic efficiency to have cost, white balance adjusting simply has advantage.
Embodiment six:
The present embodiment display device, comprises backlight, and described backlight is the LED-backlit described in embodiment five.In passive type display device, need to provide extra light source to display panel, display device described in the present embodiment adopts LED light source of the present invention, relative to the display device of traditional employing LED light source, there is cost low, good in economic efficiency, the advantage that in production, white balance adjusting is easy.Described display device can make Electronic Paper, TV, computer or Display Light Box etc.
As the present embodiment further, described display device is liquid crystal indicator, comprises the display panels be positioned at above described LED-backlit.Liquid crystal indicator have display effect good, apply general just, the advantage such as volume is little, in order to further save the cost of the liquid crystal indicator of arranging in pairs or groups with LED light source, adopt LED-backlit of the present invention.Described liquid crystal indicator can be 2D liquid crystal indicator also can be 3D liquid crystal indicator.As adopting the display device of LED-backlit of the present invention, there are all advantages that LED light source of the present invention and LED-backlit are enjoyed.
Embodiment seven:
The present embodiment LED light source method for making, is applied to the LED light source made described in above-described embodiment one to embodiment three and comprises the following 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, usual employing is from the LED of same colourity BIN, same brightness BIN, so just limit to the selection of the LED for making LED light source, the consequence caused is that LED effective rate of utilization is low, production cost is high, and economic benefit is low; And in LED light source method for making described in this enforcement, the LED of selection is from the LED of at least different colourity of two or more and/or brightness BIN; But need when selecting LED to follow following principle:
Arbitrarily neither with colourity BIN LED between colour difference meet | Δ X|≤0.02 and | Δ Y|≤0.036; Described Δ X is the corresponding differences in colourity BIN areal map in X-axis of two LED; Described Δ Y is the corresponding differences in colourity BIN areal map in Y-axis of two LED;
Luminance difference between the LED of any two different brightness BIN | LV|≤2000MCD;
Above-mentioned luminance difference and colour difference be human eye subtle go out difference, to ensure the homogeneity of colourity, brightness.
Step 2: the LED of different B IN is evenly staggered installation of on LED fabricated section.By evenly staggered distribution, the LED of the LED of different brightness BIN and/or different brightness BIN is mixed, further ensure the homogeneity of colourity and brightness.
By LED light source method for making described in the present embodiment, made LED light source is while inheriting the colourity of LED light source of traditional single BIN, brightness homogeneity, expand available LED colourity and/or brightness range, and the effect reducing colour difference between LED light source and/or luminance difference is reached by the colour mixture degree of mixed BIN and/or mixed brightness, thus with panel arrange in pairs or groups use time, regulate white balance time easier.
Embodiment eight:
The present embodiment LED light source method for making, comprises the following steps;
Step 1.1: draft several color mixture angle value; The colour difference of color mixture angle value and specified chromatic value meets | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072;
Described Δ X
1the difference in colourity BIN areal map in X-axis for color mixture angle value and specified chromatic value, described Δ Y
1the difference in colourity BIN areal map in Y-axis for color mixture angle value and specified chromatic value;
Step 1.2: select some LED; Described some LED are at least from the LED of two different colourities and/or brightness BIN;
On described LED light source, the mixed chromatic value of the LED of different colourity BIN is above-mentioned arbitrary color mixture angle value or is specified chromatic value;
Step 2: the LED of different B IN is evenly staggered installation of on LED fabricated section.
Specifically as shown in Figure 4, in the system of chromatic coordinates be made up of X and Y-axis, some colourity BIN are marked; Wherein in figure alphabetical Q, R, S, T, U, V, W, X, Y, Z, A, B, C and D for identifying each colourity group, and in each colourity group, be equipped with 5 colourity BIN, respectively by 1,2,3,4 and 5 totally five labels represent, the colourity BIN of the same label of each colourity group is arranged in order composition colourity row.The specified chromatic value of the LED light source of concrete required making is that the central value of A3 colourity BIN in figure carries out representing with pentagram and represents with sequence number 1, the black round dot being wherein positioned at described specified chromatic value periphery is respectively 10 the color mixture angle value drafted, and number consecutively 2 ~ 11, mixing meets the LED that the LED forming one of them color mixture angle value comprises X2, X3, Y2, Y3, Z2, Z3, A2, A3, B2, B3, C2, C3, D2, D3 place chrominance block.
LED according to single BIN can be only then by the LED of A3 place colourity BIN, if produce the LED of other BIN like this, cannot be used for forming required LED light source, thus have to scrap or for other or stock, thus cause that production cost is high or inventory cost is high, finally cause economic benefit bad.And the LED light source method for making described in the present embodiment, the mixing of colourity is carried out by the LED of at least two kinds of different colourities, then colourity can be mixed lower than specified chromatic value and colourity two kinds of LED higher than specified chromatic value, thus reach mixing colourity equal specified chromatic value, thus improve the utilization rate of LED, again by the color mixture angle value of matching, the availability expanding LED again, and due to color mixture angle value and specified chromatic value satisfied | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072, be can not the colour difference discovered by eyesight, namely meet colourity demand.Colour difference between the LED light source produced that simultaneously can be made by mixed BIN is reduced, thus can share same white balance, thus decreases white balance kind, reduces the difficulty of white balance adjusting.When described LED light source is made up of the LED of two kinds of different colourity BIN (representing with M, N respectively), feasible hybrid plan is as following table:
In the middle of concrete application, single BINA3, single BINB3 or single BINZ3 all can form the LED light source meeting chromaticity requirements, do not repeat at this.
Such as, first, color mixture angle value 2 can enjoy the chromatic value of a white balance with specified chromatic value 1; Meet between color mixture angle value 2 and specified chromatic value 1 | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072, be the colour difference that human eye can not be discovered, thus same white balance can be shared;
Secondly, select the LED from different B IN to mix, make the chromatic value of mixing equal color mixture angle value 2; BINX3 and C3 can also be selected for color mixture angle value 2 is optional to mix with carrying out from BINZ3 and BINA3 mixing, BINY3 and B3 also can being selected to mix, after mixing, forming color mixture angle value 2; Color mixture angle value 2 and specified chromatic value 1 can share same white balance.
In addition, as shown in Figure 4, it is on the boundary line of colourity row of 3 that color mixture angle value 4,6 and 7 is all positioned at by the colourity row of label 2 and label, when being mixed by two BIN, known by upper table, for blending the color mixture angle value be positioned on colourity row boundary line, two colourity BIN are positioned at the not homonymy of boundary line, and the color mixture angle value not on colourity row boundary line, be then mixed by the LED of the different colourity BIN of same colourity row.
LED light source method for making described in the present embodiment, by drafting color mixture angle value, again by mixed BIN, not only can obtain colourity homogeneity good, meet the LED light source of colourity demand, improve the effective rate of utilization of LED simultaneously, reduce the cost of LED light source, white balance adjusting time simultaneously for forming display device and after the assembling of panel is easier.
Embodiment nine:
The present embodiment LED light source method for making, comprises the following steps:
Step 1.1: draft several mixed brightness values, and mixed brightness value is not less than nominal luminance value, and luminance difference | LV|≤3000MCD
Step 1.2: the LED selecting two different brightness BIN, mixed brightness value is one of them mixed brightness value above-mentioned or is nominal luminance value;
Step 2: the LED from two different brightness BIN is evenly interlocked piece in LED lamp panel or on lamp bar.
Here is that the example adopting the LED from two different brightness BIN to form LED light source carries out concrete elaboration:
Following table is respectively for the brightness value of the brightness BIN and its correspondence that make LED:
| BIN encodes | Minimum luminance value | Maximum brightness value |
| L0 | 28000 | 29000 |
| M0 | 29000 | 30000 |
| N0 | 30000 | 31000 |
| O0 | 31000 | 32000 |
| P0 | 32000 | 33000 |
When nominal luminance value is the minimum luminance value of BINM0, draft out 5 mixed brightness values that meet the requirements, when the LED of employing two brightness BIN mixes, feasible hybrid plan is as following table:
Wherein, if mixed brightness value 1 is nominal luminance value, mixed brightness value 2,3,4 and 5 is for drafting the brightness value of certain luminance difference with its maintenance; The LED of different brightness BIN is selected to mix piece on mountings around above-mentioned brightness value again.Concrete as mixed brightness 2, brightness BINM0 and BINO0 two brightness BIN can be selected to form LED light source of the present invention.
In concrete application process, as single BINN0 or single BINO0 also can meet brightness requirement, the LED light source meeting rating requirements can be produced, and be the LED light source based on the mixed BIN improving LED utilization factor in the present invention, therefore again not repeat.
Embodiment ten:
The present embodiment LED light source method for making, comprises the following steps;
Step 1.1: draft several color mixture angle value; The colour difference of color mixture angle value and specified chromatic value meets | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072;
Described Δ X
1the difference in colourity BIN areal map in X-axis for color mixture angle value and specified chromatic value, described Δ Y
1the difference in colourity BIN areal map in Y-axis for color mixture angle value and specified chromatic value;
Step 1.2: select some LED; Described some LED are at least from the LED of two different colourities and/or brightness BIN;
On described LED light source, the mixed chromatic value of the LED of different colourity BIN is above-mentioned arbitrary color mixture angle value or is specified chromatic value;
Step 2: the LED of different B IN is evenly staggered installation of on LED fabricated section.
As shown in Figure 5, if specified chromatic value is 22, then first, the color mixture angle value that can share a white balance with specified chromatic value 22 drafted comprises color mixture angle value 21 and color mixture angle value 23;
Secondly, select the LED of three different colourity BIN for making described LED light source, wherein the alternative blended scheme of specified chromatic value 21 comprises three kinds; As LED or BINAB, LED or BINAB of BINZB and BINBB tri-kinds of colourity BIN, the LED of BIN, YB and BINCB tri-kinds of colourity BIN of BINAB, BINXB and BINDB tri-kinds of colourity BIN;
Again, the LED of three kinds of selected different B IN is evenly staggered installation of on mountings.
The mixing scheme of putting of concrete color mixture angle value 23 and specified chromatic value 22 is as above shown.
Adopt the LED light source method for making described in the present embodiment, the LED light source produced is mixed with the LED of three kinds of colourity BIN, there is the advantage that LED scrappage is low, production cost is low, white balance adjusting is simple and colourity homogeneity is good.
Embodiment 11:
The present embodiment LED light source method for making, comprises the following steps:
Step 1.1: draft several mixed brightness values, and mixed brightness value is not less than nominal luminance value, and luminance difference | LV|≤3000MCD
Step 1.2: the LED selecting two different brightness BIN, mixed brightness value is one of them mixed brightness value above-mentioned or is nominal luminance value;
Step 2: the LED from two different brightness BIN is evenly interlocked piece in LED lamp panel or on lamp bar.
If concrete available brightness BIN is as following table:
If nominal luminance value is the center brightness value at BINT280 place, then the available mixed brightness value 2 drafted and matching brightness value 3 can select LED combination color mixture angle value and the matching brightness value of three kinds of brightness BIN, concrete as following table.
Adopt the LED light source method for making described in the present embodiment, the LED light source produced is mixed with the LED of three kinds of brightness BIN, there is the advantage that LED scrappage is low, production cost is low, white balance adjusting is simple and 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, good in economic efficiency, simple and easy to do during for carrying out white balance adjusting with liquid crystal panel.
Above embodiment is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (6)
1. a LED light source, comprises some LED and LED fabricated sections, 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 is evenly interspersed on described LED fabricated section, it is characterized in that,
Arbitrarily neither with colourity BIN LED between colour difference meet | Δ X|≤0.02 and | Δ Y|≤0.036;
Described Δ X is the corresponding differences in colourity BIN areal map in X-axis of two LED; Described Δ Y is the corresponding differences in colourity BIN areal map in Y-axis of two LED;
The color mixture angle value formed after the LED mixing of different colourity BIN and the colour difference of specified chromatic value meet | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072; Wherein, described Δ X
1the difference in colourity BIN areal map in X-axis for color mixture angle value and specified chromatic value, described Δ Y
1the difference in colourity BIN areal map in Y-axis for color mixture angle value and specified chromatic value;
Luminance difference between the LED of any two different brightness BIN | LV|≤2000MCD;
The mixed brightness value formed after the LED mixing of different brightness is not less than nominal luminance value, and luminance difference | LV|≤3000MCD;
Described LED is the LED using same voltage BIN, and described LED is the LED of Same Wavelength BIN.
2. a LED-backlit, comprises LED light source, it is characterized in that, described LED light source is LED light source according to claim 1.
3. LED-backlit according to claim 2, is characterized in that, described LED-backlit is straight-down negative, side entering type or hybrid backlight.
4. a display device, comprises backlight, it is characterized in that, described backlight is the LED-backlit described in Claims 2 or 3.
5. display device according to claim 4, is characterized in that, described display device is liquid crystal indicator, comprises the display panels be positioned at above described LED-backlit.
6. a LED light source method for making, comprises the following steps:
Step 1: select some LED; Described some LED at least from the LED of two different colourities and/or brightness BIN,
Step 2: the LED of different B IN is evenly staggered installation of on LED fabricated section; It is characterized in that, also comprise:
Arbitrarily neither with colourity BIN LED between colour difference meet | Δ X|≤0.02 and | Δ Y|≤0.036;
Described Δ X is the corresponding differences in colourity BIN areal map in X-axis of two LED; Described Δ Y is the corresponding differences in colourity BIN areal map in Y-axis of two LED;
Described step 1 also comprises:
Steps A: draft several color mixture angle value; The colour difference of color mixture angle value and specified chromatic value meets | Δ X
1|≤0.004 and | Δ Y
1|≤0.0072;
Described Δ X
1the difference in colourity BIN areal map in X-axis for color mixture angle value and specified chromatic value, described Δ Y
1the difference in colourity BIN areal map in Y-axis for color mixture angle value and specified chromatic value;
On described LED light source, the mixed chromatic value of the LED of different colourity BIN is one of them or described specified chromatic value of above-mentioned some color mixture angle value;
Luminance difference between the LED of any two different brightness BIN | LV|≤2000MCD;
Described step 1 also comprises:
Step B: draft several mixed brightness values, mixed brightness value is not less than nominal luminance value, and luminance difference | LV|≤3000MCD
The brightness value formed after the LED mixing of different brightness on described LED light source is one of them or described nominal luminance value of above-mentioned some mixed brightness values;
Described LED is the LED using same voltage BIN, and described LED is the LED of Same Wavelength BIN.
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| CN104900164A (en) * | 2015-06-15 | 2015-09-09 | 广东威创视讯科技股份有限公司 | Automatic mixed loading method and system for LED lamp beads of a plurality of BINS |
| CN104931005B (en) * | 2015-07-02 | 2017-12-08 | 广东威创视讯科技股份有限公司 | More BIN LED lamp panel uniformity detection method and device |
| CN105427752B (en) * | 2015-11-03 | 2018-11-20 | 景旺电子科技(龙川)有限公司 | A kind of LED sync id method of more BIN |
| CN105427757B (en) * | 2015-12-30 | 2018-08-28 | 广东威创视讯科技股份有限公司 | A kind of LED lamp panel joining method and device |
| CN106019705A (en) * | 2016-06-15 | 2016-10-12 | 芜湖聚飞光电科技有限公司 | Direct type backlight bar set, manufacturing method thereof, spliced screen unit and spliced screen |
| CN106205508A (en) * | 2016-09-22 | 2016-12-07 | 昆山龙腾光电有限公司 | Backlight adjusting method and backlight adjusting means for liquid crystal indicator |
| CN110308589B (en) * | 2019-06-28 | 2023-05-05 | 上海天马微电子有限公司 | Manufacturing method of light-emitting device, backlight module and display device |
| CN112018224B (en) * | 2020-09-09 | 2022-10-28 | 京东方科技集团股份有限公司 | Die bonding method and display panel |
| CN112365814B (en) * | 2020-11-20 | 2023-06-27 | 深圳Tcl新技术有限公司 | Display device, display control method, and computer-readable storage medium |
| CN113522790A (en) * | 2021-06-01 | 2021-10-22 | 江苏鸿佳电子科技有限公司 | MINI LED colour difference allotment system |
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