Well-known, in enclosing course of study to belong to whole IC to produce hind path production process. In this process, seal IC, mixture IC or sheet to model piece IC, basically brilliant circle is decreased thin (grind segment) , brilliant circular cut (delimit piece) , go up core (bonding die) , press solder (bond) , enclose (cover) , before solidify, eletroplate, print, after solidify, cut the muscle, tubing, test after sealing. Each working procedure has diverse demand to different craft environment. In science and technology flying development and industry produce high automation today, electrostatic the harm in industrial production already was clearly, IC encloses the generation with electrostatic industry, basically have the reason of the following respects. 1, manufacturing workshop building decorates material to use tall block data more. IC produces craft to the requirement uses clean workshop or exceed clean workshop. The requirement removes dust atomic bead diameter from before 0.3 μ M changes to draft to 0.1 μ M, grit density is 353 ／ M3 about. For this, besides installation besides each aspiration equipment, use even inorganic and organic do not send dirt material, remove dirt in case. But did not serve as an index to consider to go in to the electric function of building materials. Industrial business also did not make a provision in standard of clean workshop design. What the clean workshop of IC factory basically uses is indoor decorate material to have: Polyurethane is stretch ground, Ni Guan, hard plastic, polyethylene, plastic wallpaper, colophony, lumber, white porcelain board, lacquer, gesso is waited a moment. In afore-mentioned material, it is high polymer compound or dielectric for the most part. For example, rate of resistor of organic vitreous body is 1012~1014 Ω •cm, rate of polyethylene body resistor is 1013~1015n•cm, electric performance is consequently poorer, generation of some kind of reason is electrostatic pass them not easily to earth leak, cause electrostatic accumulation thereby. 2, the disparate movements of personnel of operation of electrostatic and clean workshop mixes human body to ambulate back and forth, sole and ground tighten intimate contact and depart ceaselessly, human body also has partly each activity and grind, it is to go quickly no matter, don't go yet, trot can arise electrostatic, namely alleged walk electrified; Of people of talent of human body activity stands, depart again after the coverall that human body wears and chair surface contact also can arise electrostatic. The electrostatic voltage of human body if disappear is not dropped, and go contacting IC chip, be in possibly imperceptible in the breakdown that causes IC. 3, air adjustment and air are purified those who cause is electrostatic because IC produces a requirement to be below the condition of 45-55 ％ RH,undertake, want to execute air adjustment so, want to undertake air is purified at the same time. Fall humid air wants the effect at the beginning of the course filter, medium canal of zephyr of effect filter, efficient filter sends a person clean room. General wind speed of total wind canal is 8~10m ／ S, wind is in charge of wall besmear to paint, when dry air zephyr canal, when dry air and filter make opposite motion, metropolis generation is electrostatic. Should of bring to sb's attention is electrostatic having more sensitive concern with humidity. Additional, generation of the metropolis in carrying semi-manufactured goods and IC finished product to be defeated by a process in the carry that pack is electrostatic, this is electrostatic one of factors that remove report.

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