CN-122022835-A - Method, equipment and medium for calculating package validity period

CN122022835ACN 122022835 ACN122022835 ACN 122022835ACN-122022835-A

Abstract

The invention provides a packing validity calculation method, equipment and medium, wherein the method comprises the steps of taking a single-factor oxygen content control validity corresponding to the consumption of an oxygen scavenger as an oxygen content control validity initial value, and taking a single-factor humidity control validity corresponding to the consumption of a desiccant as a humidity control validity initial value; correcting the humidity control effective period according to the water production effect of the deoxidizer deoxidizing reaction, correcting the oxygen content control effective period according to the attenuation effect of the low humidity environment formed by the dehumidification of the drying agent on the deoxidizer deoxidizing efficiency, iteratively calculating the corrected humidity control effective period and the corrected oxygen content control effective period until the iteration result converges, and determining the dry low-oxygen double-factor coupling effective period corresponding to the deoxidizer consumption and the drying agent consumption according to the converged humidity control effective period and the converged oxygen content control effective period. The present disclosure improves the accuracy and reliability of package drying hypoxia expiration dates.

Inventors

BIAN BINGBING
JIAO JIE
ZHU JUN

Assignees

苏州通富超威半导体有限公司

Dates

Publication Date: 20260512
Application Date: 20260115

Claims (10)

1. A method of calculating a package expiration date, the method comprising: The single-factor oxygen content control effective period corresponding to the oxygen scavenger dosage is used as an oxygen content control effective period initial value, and the single-factor humidity control effective period corresponding to the desiccant dosage is used as a humidity control effective period initial value; correcting the humidity control effective period according to the water production effect of the deoxidizing reaction of the deoxidizer; correcting the oxygen content control effective period according to the attenuation effect of the low humidity environment formed by dehumidification of the drying agent on the deoxidizing efficiency of the deoxidizing agent, and iteratively calculating the corrected humidity control effective period and the corrected oxygen content control effective period until the iteration result converges; and determining the dry low-oxygen double-factor coupling effective period corresponding to the deoxidizer dosage and the drier dosage according to the converged humidity control effective period and the converged oxygen content control effective period.
2. The method of claim 1, wherein prior to said determining an oxygen content control effective period initial value based on oxygen scavenger usage, the method further comprises: Determining an initial residual oxygen content in the package based on the volume of the residual space in the package and the initial oxygen volume fraction in the package; determining the packaging oxygen permeation quantity in the target oxygen content control effective period according to the target oxygen content control effective period, the packaged oxygen permeation rate and the packaged oxygen permeation area; controlling the package oxygen permeation quantity in the effective period according to the initial residual oxygen content and the target oxygen content in the package, and determining the total oxygen absorption required by the deoxidizer; determining the reference dosage of the deoxidizer according to the total required oxygen uptake capacity and the effective oxygen uptake capacity of the deoxidizer; and superposing the deoxidizer preparation allowance on the basis of the deoxidizer reference dosage to obtain the deoxidizer dosage.
3. The method of claim 1, wherein prior to said determining an initial value of a humidity control useful period based on desiccant usage, the method further comprises: determining an initial residual water content in the package based on the volume of residual space in the package and the initial humidity in the package; determining the package moisture permeability in the target humidity control effective period according to the target humidity control effective period, the package moisture permeability and the package moisture permeability area; Determining the total required moisture absorption amount of the drying agent according to the initial residual water content in the package and the package moisture penetration amount in the target humidity control effective period; Determining the reference dosage of the drying agent according to the total required moisture absorption capacity of the drying agent and the effective moisture absorption capacity of the drying agent; And superposing a desiccant preparation allowance on the basis of the reference amount of the desiccant to obtain the amount of the desiccant.
4. The method of claim 1, wherein correcting the humidity control expiration date based on a water production effect of an oxygen scavenger oxygen removal reaction comprises: Determining the total water yield in the oxygen content control effective period according to the theoretical water yield corresponding to the oxygen scavenger dosage and an index saturation term related to the oxygen content control effective period; Determining the humidity control effective period loss amount caused by deoxidizing water production in the oxygen content control effective period according to the total water yield and the moisture permeability of the package; And correcting the humidity control effective period according to the humidity control effective period loss.
5. The method of claim 4, wherein determining the total water production during the oxygen content control lifetime based on the theoretical water production corresponding to the oxygen scavenger usage and an exponential saturation term for the oxygen content control lifetime comprises: According to the formula Determining total water yield in the effective period of oxygen content control ; Wherein, the Is the first The oxygen content after the iteration controls the effective period, For the amount of the deoxidizer to be used, Is the theoretical oxygen absorbing capacity of the deoxidizer, For the basic efficiency of the oxygen scavenger, As an exponential saturation term with respect to the oxygen content control validity period, For the oxygen removal reaction rate constant, The oxygen absorption volume production water coefficient is the unit.
6. The method of claim 1, wherein correcting the oxygen content control expiration date based on the attenuation of oxygen scavenger oxygen scavenging efficiency by the low humidity environment created by desiccant dehumidification comprises: Determining an oxygen content control validity loss amount caused by a humidity control validity when the humidity control validity exceeds a low humidity influence time threshold; And correcting the oxygen content control effective period according to the oxygen content control effective period loss.
7. The method of claim 6, wherein said determining an amount of oxygen content control expiration loss caused by said humidity control expiration exceeds a low humidity impact time threshold, comprises: in the case where the humidity control validity exceeds the low humidity influence time threshold, the validity loss function is controlled according to the oxygen content Determining an oxygen content control expiration date loss amount caused by the humidity control expiration date ; Wherein, the Is the first The humidity control validity period after the iteration is repeated, Is the first The oxygen content after the iteration controls the effective period, For the oxygen removal efficiency decay constant, The time threshold is affected for low humidity.
8. The method of claim 1, wherein determining a dry hypoxia dual factor coupling expiration date for the oxygen scavenger usage and the desiccant usage based on the converged humidity control expiration date and the converged oxygen content control expiration date comprises: and determining the minimum value of the converged humidity control effective period and the converged oxygen content control effective period as the dry low-oxygen double-factor coupling effective period corresponding to the deoxidizer consumption and the drying agent consumption.
9. A computer device comprising a processor, a memory and a bus, the memory storing machine-readable instructions executable by the processor, the processor and the memory in communication via the bus when the computer device is in operation, the machine-readable instructions when executed by the processor performing the steps of a method of packaging expiration date calculation according to any of claims 1 to 8.
10. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, performs the steps of a method of packaging validity period calculation according to any one of claims 1 to 8.

Description

Method, equipment and medium for calculating package validity period Technical Field The disclosure relates to the technical field of semiconductor packaging, and in particular relates to a packaging validity period calculating method, packaging validity period calculating equipment and packaging validity period calculating medium. Background Along with the change of the packaging technology and the structure of the chip, the value of the chip is higher and higher, and the quality problem caused by the oxidation of the chip bonding pad is not ignored. Chip-related packaging standards currently established based on the industry authorities society JEDEC or EIA and the like are mainly focused on humidity control, and important factors related to pad oxidation include oxygen content in addition to humidity. In order to avoid the risk of loss of chips in the bag caused by excessive vacuum pressure, the actual packaging vacuum degree is about 70%, the residual air in the bag contains a certain amount of oxygen, and in the long-time storage process, especially the strategic inventory storage time of the chips is changed from original one or two years to five years or even longer, the content of the oxygen outside the packaging bag penetrating into the bag cannot be ignored, the bonding pad oxidation risk of the chips in the long-time storage process is further increased, and the bonding pad oxidation can bring about the problem of cold welding and welding rejection. At present, the method of heat-sealing packaging after filling inert gas is generally used, and only can solve the problem that oxygen in the residual air in the bag can not be permeated outside the packaging bag for 5 years or more. Besides chip packaging, the packaging of foods, medicines and the like also needs to maintain a dry low-oxygen environment, namely, the dry low-oxygen in the food packaging can inhibit mold breeding and delay grease oxidation, so that the food is prevented from being affected by damp and mildewed and the flavor is prevented from deteriorating, and the dry low-oxygen in the medicine packaging can prevent the moisture absorption decomposition and oxidation failure of active ingredients in the medicines, so that the stability of the medicine effect is ensured. In order to maintain a dry low oxygen environment, a desiccant and an oxygen scavenger are often placed in the package, and the period of validity of the desiccant and the oxygen scavenger to maintain the dry low oxygen environment is calculated. However, in the prior art, the validity period is mainly calculated by adopting a double-factor independent calculation mode, the humidity control validity period is determined according to the consumption of the drying agent, the oxygen content control validity period is determined according to the consumption of the deoxidizer, the influence of deoxidizing reaction produced water on humidity and the attenuation effect of low humidity environment on deoxidizing efficiency are ignored, the validity period calculation result is easy to be large, and further the problems of chip bonding pad oxidation, food mildew, medicine failure and the like are caused before the calculated validity period is not reached, so that the reliability requirement of long-term storage cannot be met. Disclosure of Invention The embodiment of the disclosure provides a method, equipment and medium for calculating a package validity period, which are used for solving the problem of inaccurate calculation of a dry hypoxia validity period in the existing package. Based on the above-mentioned problems, in a first aspect, there is provided a package validity period calculation method, the method comprising: The single-factor oxygen content control effective period corresponding to the oxygen scavenger dosage is used as an oxygen content control effective period initial value, and the single-factor humidity control effective period corresponding to the desiccant dosage is used as a humidity control effective period initial value; correcting the humidity control effective period according to the water production effect of the deoxidizing reaction of the deoxidizer; correcting the oxygen content control effective period according to the attenuation effect of the low humidity environment formed by dehumidification of the drying agent on the deoxidizing efficiency of the deoxidizing agent, and iteratively calculating the corrected humidity control effective period and the corrected oxygen content control effective period until the iteration result converges; and determining the dry low-oxygen double-factor coupling effective period corresponding to the deoxidizer dosage and the drier dosage according to the converged humidity control effective period and the converged oxygen content control effective period. With reference to the first aspect, in a possible implementation manner, before the determining the oxygen content control effective period initial value acc