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collage retournement

English translation: Direct chip attach (DCA)/ Direct Chip attachment/ Chip on Board (COB)


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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
French term or phrase:collage retournement
English translation:Direct chip attach (DCA)/ Direct Chip attachment/ Chip on Board (COB)
Entered by: pooja_chic
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16:12 Dec 9, 2011
French to English translations [PRO]
Tech/Engineering - Electronics / Elect Eng
French term or phrase: collage retournement
patent to do with conductive polymers

"Les circuits peuvent être formés indépendamment, puis assemblés, par exemple par un procédé de collage retournement dans lequel on retourne le deuxième substrat, on aligne les deux substrats l’un par rapport à l’autre puis on colle, par exemple par collage moléculaire les deux circuits l’un sur l’autre."

A suggestion by me might be "reversal bonding", which gets 300 google hits... but nothing permitting a FR/EN comparison...
Mpoma
Local time: 08:51
Direct chip attach (DCA)/ Direct Chip attachment/ Chip on Board (COB)
Explanation:
It is the generic term used in this context
http://www.flipchips.com/tutorial01.html
Flip chip microelectronic assembly is the direct electrical connection of face-down (hence, "flipped") electronic components onto substrates, circuit boards, or carriers, by means of conductive bumps on the chip bond pads. In contrast, wire bonding, the older technology which flip chip is replacing, uses face-up chips with a wire connection to each pad.

Flip chip components are predominantly semiconductor devices; however, components such as passive filters, detector arrays, and MEMs devices are also beginning to be used in flip chip form. Flip chip is also called Direct Chip Attach (DCA), a more descriptive term, since the chip is directly attached to the substrate, board, or carrier by the conductive bumps.

http://www.siliconfareast.com/cob.htm
Chip-on-Board, or COB, refers to the semiconductor assembly technology wherein the microchip or die is directly mounted on and electrically interconnected to its final circuit board, instead of undergoing traditional assembly or packaging as an individual IC. The elimination of conventional device packaging from COB assemblies simplifies the over-all process of designing and manufacturing the final product, as well as improves its performance as a result of the shorter interconnection paths.
The general term for COB technology is actually 'direct chip attachment', or DCA. Aside from circuit boards used for COB's, various substrates are available for use in DCA. There are, for instance, ceramic and glass ceramic substrates which exhibit excellent dielectric and thermal properties. Organic substrates that weigh and cost less while providing a low dielectric constant also exist. There are also flex substrates which, being pliable, have the ability to bend. DCA assemblies have received a number of other names aside from 'COB' based on these available substrates, e.g., chip-on-glass (COG), chip-on-flex (COF), etc.

The COB process consists of just three major steps: 1) die attach or die mount; 2) wirebonding; and 3) encapsulation of the die and wires. A variant of COB assembly, the flip-chip on board (FCOB), does not require wirebonding since it employs a chip whose bond pads are bumped, which are the ones that connect directly to designated pads on the board. As such, FCOB's have their chips facing downward on the board (hence the name 'flipchip'). Aside from encapsulation, it is also necessary to 'underfill' a flip chip to protect its active surface and bumps from thermo-mechanical and chemical damage.

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Note added at 16 hrs (2011-12-10 08:29:17 GMT)
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http://dspace.mit.edu/bitstream/handle/1721.1/50398/40606893...

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Note added at 16 hrs (2011-12-10 08:30:12 GMT)
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http://www3.uic.com/wcms/Images.nsf/0/f2f59d78597c84ea852569...$FILE/Borgesen.pdf

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Note added at 16 hrs (2011-12-10 08:30:31 GMT)
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http://www.semicorp.com/articles/flip-chip-attachment.html
Selected response from:

pooja_chic
Local time: 13:21
Grading comment
thanks
4 KudoZ points were awarded for this answer



Summary of answers provided
4Direct chip attach (DCA)/ Direct Chip attachment/ Chip on Board (COB)
pooja_chic
3flip-chip bonding
chris collister
3inversion and bonding
Pascale van Kempen-Herlant


  

Answers


28 mins   confidence: Answerer confidence 3/5Answerer confidence 3/5
inversion and bonding


Explanation:
a process/method of inversion and bonding

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Note added at 30 mins (2011-12-09 16:43:19 GMT)
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First inversion and then bonding


Pascale van Kempen-Herlant
Local time: 09:51
Native speaker of: Native in FrenchFrench
PRO pts in category: 4
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2 hrs   confidence: Answerer confidence 3/5Answerer confidence 3/5
flip-chip bonding


Explanation:
Not totally sure about this, but see http://www.ami.ac.uk/courses/topics/0260_fc/index.html for a description of the flip-chip process

chris collister
France
Local time: 09:51
Specializes in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 258
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16 hrs   confidence: Answerer confidence 4/5Answerer confidence 4/5
Direct chip attach (DCA)/ Direct Chip attachment/ Chip on Board (COB)


Explanation:
It is the generic term used in this context
http://www.flipchips.com/tutorial01.html
Flip chip microelectronic assembly is the direct electrical connection of face-down (hence, "flipped") electronic components onto substrates, circuit boards, or carriers, by means of conductive bumps on the chip bond pads. In contrast, wire bonding, the older technology which flip chip is replacing, uses face-up chips with a wire connection to each pad.

Flip chip components are predominantly semiconductor devices; however, components such as passive filters, detector arrays, and MEMs devices are also beginning to be used in flip chip form. Flip chip is also called Direct Chip Attach (DCA), a more descriptive term, since the chip is directly attached to the substrate, board, or carrier by the conductive bumps.

http://www.siliconfareast.com/cob.htm
Chip-on-Board, or COB, refers to the semiconductor assembly technology wherein the microchip or die is directly mounted on and electrically interconnected to its final circuit board, instead of undergoing traditional assembly or packaging as an individual IC. The elimination of conventional device packaging from COB assemblies simplifies the over-all process of designing and manufacturing the final product, as well as improves its performance as a result of the shorter interconnection paths.
The general term for COB technology is actually 'direct chip attachment', or DCA. Aside from circuit boards used for COB's, various substrates are available for use in DCA. There are, for instance, ceramic and glass ceramic substrates which exhibit excellent dielectric and thermal properties. Organic substrates that weigh and cost less while providing a low dielectric constant also exist. There are also flex substrates which, being pliable, have the ability to bend. DCA assemblies have received a number of other names aside from 'COB' based on these available substrates, e.g., chip-on-glass (COG), chip-on-flex (COF), etc.

The COB process consists of just three major steps: 1) die attach or die mount; 2) wirebonding; and 3) encapsulation of the die and wires. A variant of COB assembly, the flip-chip on board (FCOB), does not require wirebonding since it employs a chip whose bond pads are bumped, which are the ones that connect directly to designated pads on the board. As such, FCOB's have their chips facing downward on the board (hence the name 'flipchip'). Aside from encapsulation, it is also necessary to 'underfill' a flip chip to protect its active surface and bumps from thermo-mechanical and chemical damage.

--------------------------------------------------
Note added at 16 hrs (2011-12-10 08:29:17 GMT)
--------------------------------------------------

http://dspace.mit.edu/bitstream/handle/1721.1/50398/40606893...

--------------------------------------------------
Note added at 16 hrs (2011-12-10 08:30:12 GMT)
--------------------------------------------------

http://www3.uic.com/wcms/Images.nsf/0/f2f59d78597c84ea852569...$FILE/Borgesen.pdf

--------------------------------------------------
Note added at 16 hrs (2011-12-10 08:30:31 GMT)
--------------------------------------------------

http://www.semicorp.com/articles/flip-chip-attachment.html

pooja_chic
Local time: 13:21
Specializes in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 12
Grading comment
thanks
Login to enter a peer comment (or grade)




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Changes made by editors
Dec 14, 2011 - Changes made by pooja_chic:
Created KOG entryKudoZ term => KOG term


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