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A sorting method for LED chips

A technology of LED chips and sorting, applied in sorting and other directions to achieve the effect of reducing costs

Active Publication Date: 2016-04-20
XIANGNENG HUALEI OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a sorting method of LED chips that has simple steps and can greatly increase the number of sorted categories without increasing the complexity of the equipment, so as to solve the current technology that increasing the number of sorted categories will inevitably increase the complexity of the sorting machine question

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  • A sorting method for LED chips
  • A sorting method for LED chips
  • A sorting method for LED chips

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Experimental program
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Effect test

Embodiment 1

[0036] see figure 1 , the sorting method of a kind of LED chip of the present invention, comprises the following steps:

[0037] S1: Establish a total sorting category table according to the number m of categories (Bin, corresponding to certain photoelectric characteristic requirements) of sorting requirements. details as follows:

[0038] (1) According to the specific optoelectronic characteristics of the chip, such as wavelength, brightness, operating voltage, etc., divide the number of bins for each optoelectronic characteristic according to the classification requirements, and then multiply each number according to the law of arrangement and combination to get the total score number of categories.

[0039] (2) According to the total number of sub-categories obtained in step (1), compile the total sorting category table. Since the number of categories in the total sorting category table may be greater than the maximum number of subcategories of the sorting machine, it ca...

Embodiment 2

[0052] see figure 2 , taking a certain 12A specification LED chip product as an example, the sorting method of the LED chip of the present invention is described in detail, and the specific steps of the method are as follows:

[0053] S1: Establish a total sorting category table according to the category quantity m of sorting requirements. details as follows:

[0054] (1) The following table 1 is the judgment standard for the 12A product FQC (finished product quality inspection) storage level:

[0055] Table 1 Judgment standard table of FQC warehousing level of a 12A product

[0056]

[0057] It can be seen from Table 1 that among the main photoelectric characteristics that need to be distinguished, the wavelength range is 445 to 475nm, the voltage is 2.8 to 3.6v, and the brightness is ≥10mW. Those whose photoelectric characteristics are within this range are mass-produced. We can use the method of permutation and combination to get the total number of sub-categories n...

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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 [0001] The invention relates to the field of sorting LED chips, in particular to a sorting method for LED chips. Background technique [0002] LED chips can be tested and sorted according to optoelectronic characteristics such as wavelength, luminous intensity, luminous angle and operating voltage. As a result, the LED chips are divided into many bins and Bins (categories), and then the sorting machine automatically packs the LED chips into different Bin boxes (category output boxes) according to the set test standards. [0003] With the rapid development of the LED industry, LED chip manufacturing technology has been greatly improved, and the market's quality requirements for LED chips are also getting higher and higher. For example: customers with large display screens or other high-end applications have particularly strict requirements on the consistency of wavelength and brightness of LED chips. This situation forces LED packaging factories to put forwa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07C5/34
Inventor 黄矗李蛟王红峰
Owner XIANGNENG HUALEI OPTOELECTRONICS
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