As one of the largest back-end toll processing company in Korea.
|Key control item||Control limit||Frequency||Response|
|Particle||10 Zone||Below 10 (0.3㎛)||1x / Week||QA|
|100 Zone||Below 100 (0.3㎛)|
|500 Zone||Below 500 (0.3㎛)|
|Temperature||24 ± 4 ℃||3x / Day||QA|
|Humidity||50 ± 10 %|
|De-ionized water||Resistivity||Source - Above 17MΩ||1x / Month||QA|
|Return - Above 16MΩ|
|TOC||Below 150ppb||1x / Quarter||QA|
|Bacteria||Below 5 points||1x / Month||QA|
|Intensity of illumination||Above 400 Lux||1x / Quarter||Maintenance|
Our quality management is of the utmost importance.
Anyone or anything that passes through the gate must first go through the air shower booth.
These boothes are programmed that both sides are not to be opened at the same time.
Smock & smock room are managed, and gloves are disposed once used
Once we wear the smocks, the next step is washing and drying hands in order to wash away dust.
ESD protection gate helps to prevent ESD problem in clean room.
And very lastly, we need to go through another air shower booth before go into the line.
Our booth is programmed that both sides are not to be opened at the same time in any circumstances.
Clean room garments and subsidiary materials are managed, and washed periodically.
Gloves are disposed once used.
Every staff and guest are mandated to wash their hands with DI water.
(Electro Static Discharge) We strive to eliminate any ESD problem.
Anything that is not made of Anti-static material shall not pass the gate.
Digital Thermo-hygrometer monitors clean room temperature and humidity on a real time basis,
and delivers the monitored value to central control room. Temperature and humidity is observed at hourly intervals and recored as daily monitoring reports.
|Clean Room Class||Control Particle Size||Cotroll Limit||Shut Down Limit|
|10 Class||0.3 um||< 8 >||10|
|100 Class||0.5 um||< 80||> 100|
|500 Class||0.5 um||< 400||> 500|
* QA monitors particle in clean room using portable particle counter on a daily (10 class) /weekly (100,500 class) basis.
|Floor Ground||< 10^9Ω|
|Ionizer Decay time||< 10 sec|
|Ion balance||< 35 V|
|Facility Ground||< 1Ω|
|Facility Leakage Current||< 5A|
|Equipment Ground||< 1Ω|
|Equipment Product ESD||< 200 V|
|Work Table/ Shelf Ground||< 10^9Ω|
|Work Table/ Shelf Product ESD||< 200 V|
|Chiar/Cart Ground||< 10^9Ω|
* ESD control measurement is perfromed by QA,Maint on a monthly basis.
|Item||Cotroll Limit||Shut Down Limit|
|Bacteria||< 5 colonies||> 10 colonies|
|Resistance||≥ 17 ㏁ (Input)
≥ 16 ㏁ (Return)
|< 16 ㏁ (Input)
< 14 ㏁ (Return)
|TOC||< 150 ppb||> 200 ppb|
|Temperature||23±2˚C||< 20˚C, or > 26˚C|