CN103846230A - LED chip sorting method - Google Patents
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- CN103846230A CN103846230A CN201210504128.2A CN201210504128A CN103846230A CN 103846230 A CN103846230 A CN 103846230A CN 201210504128 A CN201210504128 A CN 201210504128A CN 103846230 A CN103846230 A CN 103846230A
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Abstract
The invention discloses an LED chip sorting method. The method adopting a multi-time sorting process comprises the following steps: carrying out first-time sorting by detecting and recording of the photoelectric characteristics and corresponding coordinates of LED chips to sort out partial classes, and recording the photoelectric characteristics and the coordinates of the LED chips unsorted in the first-time detection to form an archive to be used in subsequent multi-time sorting. The quantity of sorting classes is not limited to the maximum quantity of classes sorted through the single-time sorting of a sorting apparatus, so LED chip production manufacturers can adopt a low-cost apparatus to complete sorting work having high quality requirements, and the production and examination cost is substantially reduced.
Description
Technical field
The present invention relates to LED chip sorting field, especially, relate to a kind of method for separating of LED chip.
Background technology
LED chip can carry out testing, sorting according to photoelectric characteristics such as wavelength, luminous intensity, lighting angle and operating voltages.Consequently LED chip is divided into a lot of shelves and Bin(classification), then separator can automatically be divided in LED chip in different Bin box (classification output cassette) according to the testing standard of setting.
Along with the high speed development of LED industry, LED chip manufacturing technology is greatly improved, and market is also more and more higher to the quality requirement of LED chip.For example: large display screen or other high-grade application client are just especially strict in the wavelength to LED chip and the requirement of brightness uniformity.This situation forces LED encapsulation factory requirement in the time of buying LED chip also more and more stricter, particularly for the requirement of the index of wavelength, brightness and operating voltage.Such as, the past, requirement was ± 0.5nm to wavelength, 2.5nm stepping, and brightness is 20mcd stepping.May require now wavelength ± 0.5nm, 1.5nm stepping, brightness 10mcd stepping.Thereby LED chip manufacturer just must carry out strict sorting to produced LED chip before chip sale.
Early stage separator is that the maximum categorical measure that can select is generally 32Bin, 50Bin, is increased to afterwards 64Bin, 100Bin, at present the separator of existing 150Bin.Even if the photoelectric characteristic technical indicator of like this, sub-category LED chip still cannot meet the demand of production & marketing.The categorical measure that sorting can separate depends on the complexity of equipment, the classification wanting point is more, traditional method is the Bin frame(classification output cassette that increases separator) quantity, in the time increasing frame quantity, can improve greatly the complexity of separator, correspondingly, the manufacturing cost of equipment also can increase; Complicated equipment is also unfavorable for production operation.
Summary of the invention
The object of the invention is that the complexity that provides a kind of step simply, not increase equipment just can improve the method for separating of the LED chip of the categorical measure of sorting greatly, must increase the technical problem of the complexity of separator to solve the sub-category quantity of current increase.
For achieving the above object, the invention provides a kind of method for separating of LED chip, comprise the following steps:
S1: set up total sorting classification table according to the categorical measure m of sorting demand;
S2: take out the classification that n-1 classification need be selected as sorting first from described total sorting classification table; Wherein, described n is that separator carries out the maximum categorical measure that single sorting can be selected;
S3: the step of sorting first comprises: the photoelectric characteristic that detects LED chip; Described in described photoelectric characteristic is met, the LED chip of n-1 classification of sorting is first selected into respectively on corresponding classification output cassette, and record do not meet described in the photoelectric characteristic of LED chip of n-1 classification of sorting first and the coordinate on corresponding classification output cassette thereof;
S4: again take out n-1 classification in the classification not being removed as sorting need be selected again classification from described total sorting classification table;
S5: the step of sorting comprises again: according to the photoelectric characteristic of the LED chip of n-1 classification of sorting first described in described not meeting and the coordinate on corresponding classification out-put container thereof, the LED chip that directly photoelectric characteristic is met to n-1 classification of this sorting is selected into respectively on corresponding classification output cassette;
Repeat described step S4, step S5, until complete described total sorting classification table.
Further improvement as method one of the present invention:
Before described step S5, described method also comprises: described in described record is not met, the format conversion of the document of the photoelectric characteristic of the LED chip of n-1 classification of sorting first and the coordinate on corresponding classification output cassette thereof is the document format of described sorting function identification, and the Coordinate Conversion on corresponding classification output cassette is the coordinate in the LED chip input cartridge of the described separator of input by the LED chip in described document.
Described step: the Coordinate Conversion by the LED chip in described document on corresponding classification output cassette is the coordinate in the LED chip input cartridge of the described separator of input, and concrete operations are: the coordinate on described classification output cassette is rotated counterclockwise to new coordinate after the 90 ° coordinate in LED chip input cartridge.
Described photoelectric characteristic comprises wavelength, brightness and operating voltage.
As a total inventive concept, the present invention also provides the method for separating of another kind of LED chip, and the method two comprises the following steps:
S1: set up total sorting classification table according to the categorical measure m of sorting demand;
S2: take out the classification that n-2 classification need be selected as sorting first from described total sorting classification table; And using the individual classification of m-(n-2) except a described n-2 classification in described total sorting classification table as a special classification; Wherein, described n is that separator carries out the maximum categorical measure that single sorting can be selected;
S3: the step of sorting first comprises: the photoelectric characteristic that detects LED chip; Described n-2 classification and other LED chip of described dedicated classes of photoelectric characteristic being met to this sorting are selected into respectively on corresponding classification output cassette, and record meets the photoelectric characteristic of described other LED chip of dedicated classes and the coordinate on corresponding classification output cassette thereof;
S4: in the classification not being removed from described special classification, take out n-2 classification as the classification that sorting need be selected again, and using the individual classification of m-2 (n-2) except described n-2 classification of this taking-up in described special classification as special classification;
S5: the step of sorting comprises again: according to the photoelectric characteristic of the LED chip in described special classification and the coordinate on corresponding classification output cassette thereof, the LED chip that directly photoelectric characteristic is met to n-1 classification of this sorting is selected into respectively on corresponding classification output cassette;
Repeat described step S4, step S5, until complete described total sorting classification table.
Further improvement as said method two:
Before described step S5, described method also comprises: be the document format of described sorting function identification by the format conversion of document that meets the photoelectric characteristic of described other LED chip of dedicated classes and the coordinate on corresponding classification output cassette thereof, and the Coordinate Conversion on corresponding classification output cassette is the coordinate in the LED chip input cartridge of the described separator of input by the LED chip in described document.
Described step: the Coordinate Conversion by the LED chip in described document on corresponding classification output cassette is the coordinate in the LED chip input cartridge of the described separator of input, and concrete operations are: the coordinate on described classification output cassette is rotated counterclockwise to new coordinate after the 90 ° coordinate in LED chip input cartridge.
Described photoelectric characteristic comprises wavelength, brightness and operating voltage.
The present invention has following beneficial effect:
The method for separating of LED chip of the present invention, adopt the method for repeatedly sorting, detect and record photoelectric characteristic and the corresponding coordinate of LED chip by sorting first, thus the maximum categorical measure that the single sorting that makes the quantity of sorting classification be not limited to screening installation can be selected; And then the manufacturer that makes LED chip can adopt equipment cheaply to complete the separation operation that high-quality requires, greatly reduce and produce and the cost of inspection.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Brief description of the drawings
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic flow sheet of the method for separating of the LED chip of the preferred embodiment of the present invention 1; And
Fig. 2 is the idiographic flow schematic diagram of the method for separating of the LED chip of the preferred embodiment of the present invention 2.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Embodiment 1:
Referring to Fig. 1, the method for separating of a kind of LED chip of the present invention, comprises the following steps:
S1: quantity m sets up total sorting classification table according to the classification of sorting demand (Bin, corresponding certain photoelectric characteristic requires).Specific as follows:
(1) according to the concrete photoelectric characteristic of chip, as wavelength, brightness, operating voltage etc., mark off respectively the stepping quantity of each photoelectric characteristic according to sub-category requirement, then according to the rule of permutation and combination, each quantity multiplies each other, and draws total sub-category quantity.
(2) the total sub-category quantity obtaining according to step (1), writes total sorting classification table.Because the categorical measure in this total sorting classification table may be greater than the sub-category quantity of maximum of separator, therefore can not be directly used in sorting.
S2: take out the classification that n-1 classification need be selected as sorting first from total sorting classification table; Wherein, n is that separator carries out the maximum categorical measure that single sorting can be selected.
For example: it is 100 that separator carries out the maximum categorical measure n that single sorting can select, from total sorting classification table, take out 99 classifications herein and carry out sorting, other LED chips that do not meet these 99 classifications are divided in the 100th classification of separator, can be described as " other " class.
S3: the step of sorting first comprises: the photoelectric characteristic that detects LED chip; The LED chip that photoelectric characteristic is met to n-1 classification of sorting is first selected into respectively on corresponding classification output cassette, and record does not meet the photoelectric characteristic of LED chip of n-1 classification of sorting first and the coordinate on corresponding classification output cassette thereof.
In the present embodiment, record is not met to the photoelectric characteristic of LED chip of n-1 classification of sorting first and the format conversion of the document of coordinate on corresponding classification output cassette is the document format of sorting function identification, and the Coordinate Conversion on corresponding classification output cassette is the coordinate in the LED chip input cartridge of input separator by the LED chip in document; Can be described as " heavily turning shelves ".While carrying out sorting due to existing separator, all to spend by mechanical arm horizontal 90 LED chip that need are selected to be emitted on classification output cassette or classification output film, when converted coordinate, coordinate on classification output cassette is rotated counterclockwise to new coordinate after the 90 ° coordinate in LED chip input cartridge, and the coordinate in the LED chip input cartridge when making to carry out sorting again on the coordinate of LED chip and the classification output cassette of last time sorting or classification output film can be mapped.The specific algorithm that is rotated counterclockwise 90 degree conversion can be with reference to following formula:
X=y
Y=Max(x)-x+1
Wherein, the X of capitalization, Y representative be after format conversion, coordinate (the X of new each LEDs chip of prober data (for the detection data of directly calling for separator), Y), the x of small letter, that y represents is the coordinate (x that in classification output cassette, each LEDs chip is corresponding, y), X(x) axle and Y(y) axle is to be all oppositely arranged according to the path that machine route and mechanical arm swing of entering of the LED chip of separator.
S4: again take out n-1 classification in the classification that is not removed (in the present embodiment, when sorting for the second time, what be not removed is the individual classification of m-(n-1)) as sorting need be selected again classification from total sorting classification table.In the time of not enough n-1 of the categorical measure that is not removed in total sorting classification table, all take out, this time taken out as for the last time.
S5: the step of sorting comprises again: according to not meeting the photoelectric characteristic of LED chip of n-1 classification of sorting first and the coordinate on corresponding classification out-put container thereof, the LED chip that directly photoelectric characteristic is met to n-1 classification of this sorting is selected into respectively on corresponding classification output cassette.
Repeated execution of steps S4, step S5, until complete total sorting classification table., all categories in total sorting classification table has all been removed and has all completed sorting.
In above-mentioned steps, detect and record photoelectric characteristic and the corresponding coordinate of LED chip by sorting first, thus the maximum categorical measure that the single sorting that makes the quantity of sorting classification be not limited to screening installation can be selected; Can realize under the condition of utilizing existing equipment, do not increase part of appliance, do not change device structure, the photoelectric characteristic of LED chip is distinguished to grade and bring up to the demand that reaches market high-end customer, realization adopts equipment cheaply to complete the separation operation of high-quality requirement, and can greatly reduce the quantity of non-volume production classification, increase the benefit, and greatly reduce the cost of producing and checking.
Embodiment 2:
Referring to Fig. 2, taking the LED chip product of certain 12A specification as example, describe the method for separating of LED chip of the present invention in detail below, the method concrete steps are as follows:
S1: set up total sorting classification table according to the categorical measure m of sorting demand.Specific as follows:
(1) following table 1 is the inspection of this 12A product F QC(end product quality) criterion of warehouse-in grade:
Certain 12A product F QC warehouse-in grade criterion table of table 1
Can be learnt by table 1, in the photoelectric characteristic that main needs are distinguished, wave-length coverage is 445 to 475nm, and voltage is 2.8 to 3.6v, and brightness is >=10mW.Photoelectric characteristic is all volume production classification within the scope of this.We can draw the quantity that total needs are sub-category by the way of permutation and combination:
Voltage: 2.8 to 3.6V, 0.2v stepping, quantity is (3.6-2.8)/0.2=4.
Wavelength: 445nm is to 475nm, 2.5nm stepping, and quantity is (475-445)/2.5=12.
Brightness (supposing that maximum brightness is 16.5mw): 10 to 16.5mw, (15mw is following with 1mw stepping, and 15mW is above with 1.5mW stepping), quantity be (15-10)/1}+{(16.5-15)/1.5}=6.
: total sub-category quantity m=4*12*6=288.
(2) the total sub-category quantity 288 obtaining according to step (1), writes total sorting classification table.
S2: in the present embodiment, the separator of use to carry out the maximum categorical measure (maximum volume production categorical measure) that single sorting can select be 100.As shown in Figure 2, from total sorting classification table, take out 98 classifications herein and carry out sorting, other classifications (288-98) that do not meet these 98 classifications are divided in the 99th classification of separator, can be described as special classification, what do not meet in total sorting classification table any one divides the 100th classification into.
S3: the step of sorting first comprises: the photoelectric characteristic that detects LED chip; Photoelectric characteristic is met to 98 classifications of sorting first and the LED chip of the 99th classification is selected into respectively on corresponding classification output cassette, and record meets the photoelectric characteristic of LED chip of the 99th classification and the coordinate on corresponding classification output cassette thereof.
In the present embodiment, to meet the photoelectric characteristic of LED chip of the 99th classification and the format conversion of the document of coordinate on corresponding classification output cassette is the document format of sorting function identification, and the Coordinate Conversion on corresponding classification output cassette is the coordinate in the LED chip input cartridge of input separator by the LED chip in document.Changing in the same manner as in Example 1ly herein, is also that the coordinate on classification output cassette is rotated counterclockwise to new coordinate after the 90 ° coordinate in LED chip input cartridge.Concrete account form does not repeat them here.
S4: from special classification, take out 98 classifications as the classification that sorting need be selected again, and using (288-98-98) the individual classification not being removed in special classification as special classification.In the time of 98 of categorical measure less thaies not being removed in total sorting classification table, all take out, because the classification not being removed, therefore special classification also needn't be set again, and this time taken out as last.
S5: the step of sorting comprises again: according to the photoelectric characteristic of the LED chip in special classification and the coordinate on corresponding classification output cassette thereof, the LED chip that directly photoelectric characteristic is met to n-1 classification of this sorting is selected into respectively on corresponding classification output cassette.
Repeated execution of steps S4, step S5, until complete total sorting classification table., all categories in total sorting classification table has all been removed and has all completed sorting.
If the existing volume production specification in strict accordance with separator is carried out sorting, have at least the product of 189 volume production classifications cannot be selected into the classification needing, will be included in non-volume production classification, will cause great waste and loss.And according to above-mentioned steps of the present invention, detect and record photoelectric characteristic and the corresponding coordinate of LED chip by sorting first, thereby the maximum categorical measure that the single sorting that makes the quantity of sorting classification be not limited to screening installation can be selected; Can realize under the condition of utilizing existing equipment, do not increase part of appliance, do not change device structure, the photoelectric characteristic of LED chip is distinguished to grade and bring up to the demand that reaches market high-end customer, and can greatly reduce the quantity of non-volume production classification, increase the benefit, and greatly reduce the cost of producing and checking.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a method for separating for LED chip, is characterized in that, comprises the following steps:
S1: set up total sorting classification table according to the categorical measure m of sorting demand;
S2: take out the classification that n-1 classification need be selected as sorting first from described total sorting classification table; Wherein, described n is that separator carries out the maximum categorical measure that single sorting can be selected;
S3: the step of sorting first comprises: the photoelectric characteristic that detects LED chip; Described in described photoelectric characteristic is met, the LED chip of n-1 classification of sorting is first selected into respectively on corresponding classification output cassette, and record do not meet described in the photoelectric characteristic of LED chip of n-1 classification of sorting first and the coordinate on corresponding classification output cassette thereof;
S4: again take out n-1 classification in the classification not being removed as sorting need be selected again classification from described total sorting classification table;
S5: the step of sorting comprises again: according to the photoelectric characteristic of the LED chip of n-1 classification of sorting first described in described not meeting and the coordinate on corresponding classification output cassette thereof, the LED chip that directly photoelectric characteristic is met to n-1 classification of this sorting is selected into respectively on corresponding classification output cassette;
Repeat described step S4, step S5, until complete described total sorting classification table.
2. the method for separating of LED chip according to claim 1, it is characterized in that, before described step S5, described method also comprises: described in described record is not met, the format conversion of the document of the photoelectric characteristic of the LED chip of n-1 classification of sorting first and the coordinate on corresponding classification output cassette thereof is the document format of described sorting function identification, and the Coordinate Conversion on corresponding classification output cassette is the coordinate in the LED chip input cartridge of the described separator of input by the LED chip in described document.
3. the method for separating of LED chip according to claim 2, it is characterized in that, described step: the Coordinate Conversion by the LED chip in described document on corresponding classification output cassette is the coordinate in the LED chip input cartridge of the described separator of input, and concrete operations are: the coordinate on described classification output cassette is rotated counterclockwise to new coordinate after the 90 ° coordinate in LED chip input cartridge.
4. according to the method for separating of the LED chip described in any one in claims 1 to 3, it is characterized in that, described photoelectric characteristic comprises wavelength, brightness and operating voltage.
5. a method for separating for LED chip, is characterized in that, comprises the following steps:
S1: set up total sorting classification table according to the categorical measure m of sorting demand;
S2: take out the classification that n-2 classification need be selected as sorting first from described total sorting classification table; And using the individual classification of m-(n-2) except a described n-2 classification in described total sorting classification table as a special classification; Wherein, described n is that separator carries out the maximum categorical measure that single sorting can be selected;
S3: the step of sorting first comprises: the photoelectric characteristic that detects LED chip; Described n-2 classification and other LED chip of described dedicated classes of photoelectric characteristic being met to this sorting are selected into respectively on corresponding classification output cassette, and record meets the photoelectric characteristic of described other LED chip of dedicated classes and the coordinate on corresponding classification output cassette thereof;
S4: in the classification not being removed from described special classification, take out n-2 classification as the classification that sorting need be selected again, and using the individual classification of m-2 (n-2) except described n-2 classification of this taking-up in described special classification as special classification;
S5: the step of sorting comprises again: according to the photoelectric characteristic of the LED chip in described special classification and the coordinate on corresponding classification output cassette thereof, the LED chip that directly photoelectric characteristic is met to n-1 classification of this sorting is selected into respectively on corresponding classification output cassette;
Repeat described step S4, step S5, until complete described total sorting classification table.
6. the method for separating of LED chip according to claim 5, it is characterized in that, before described step S5, described method also comprises: be the document format of described sorting function identification by the format conversion of document that meets the photoelectric characteristic of described other LED chip of dedicated classes and the coordinate on corresponding classification output cassette thereof, and the Coordinate Conversion on corresponding classification output cassette is the coordinate in the LED chip input cartridge of the described separator of input by the LED chip in described document.
7. the method for separating of LED chip according to claim 6, it is characterized in that, described step: the Coordinate Conversion by the LED chip in described document on corresponding classification output cassette is the coordinate in the LED chip input cartridge of the described separator of input, and concrete operations are: the coordinate on described classification output cassette is rotated counterclockwise to new coordinate after the 90 ° coordinate in LED chip input cartridge.
8. according to the method for separating of the LED chip described in any one in claim 5 to 7, it is characterized in that, described photoelectric characteristic comprises wavelength, brightness and operating voltage.
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| CN201210504128.2A CN103846230B (en) | 2012-11-30 | 2012-11-30 | A kind of method for separating of LED chip |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104409394A (en) * | 2014-11-18 | 2015-03-11 | 湘能华磊光电股份有限公司 | Method and system for improving separation efficiency of LED chips |
| CN105797966A (en) * | 2015-12-07 | 2016-07-27 | 常州市武进区半导体照明应用技术研究院 | Mixed-Bin selecting method and device for LED wafer chips |
| CN106093819A (en) * | 2016-05-28 | 2016-11-09 | 湘能华磊光电股份有限公司 | Make method and the method for correcting chip test machine of all band contrast crystal grain |
| CN113560198A (en) * | 2021-05-20 | 2021-10-29 | 光大环境科技（中国）有限公司 | Category sorting method and category sorting system |
| CN113976481A (en) * | 2021-10-25 | 2022-01-28 | 江西省兆驰光电有限公司 | Method, system, computer and storage medium for sorting LEDs based on light emitting angle |
| WO2023005918A1 (en) * | 2021-07-26 | 2023-02-02 | 北京比特大陆科技有限公司 | Chip sorting method and apparatus, device, and storage medium |
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| CN104409394A (en) * | 2014-11-18 | 2015-03-11 | 湘能华磊光电股份有限公司 | Method and system for improving separation efficiency of LED chips |
| CN104409394B (en) * | 2014-11-18 | 2017-01-25 | 湘能华磊光电股份有限公司 | Method and system for improving separation efficiency of LED chips |
| CN105797966A (en) * | 2015-12-07 | 2016-07-27 | 常州市武进区半导体照明应用技术研究院 | Mixed-Bin selecting method and device for LED wafer chips |
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| CN113560198A (en) * | 2021-05-20 | 2021-10-29 | 光大环境科技（中国）有限公司 | Category sorting method and category sorting system |
| CN113560198B (en) * | 2021-05-20 | 2023-03-03 | 光大环境科技（中国）有限公司 | Category sorting method and category sorting system |
| WO2023005918A1 (en) * | 2021-07-26 | 2023-02-02 | 北京比特大陆科技有限公司 | Chip sorting method and apparatus, device, and storage medium |
| CN113976481A (en) * | 2021-10-25 | 2022-01-28 | 江西省兆驰光电有限公司 | Method, system, computer and storage medium for sorting LEDs based on light emitting angle |
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| CN103846230B (en) | 2016-04-20 |
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