Method of forming a pre-metal dielectric film on a...

H - Electricity – 01 – L

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H01L 21/316 (2006.01) H01L 21/3105 (2006.01)

Patent

CA 2417236

A method of forming a pre-metal dielectric film having good as deposited gapfill characteristics, as well as good mobile-ion gettering capability. The method involves first depositing a layer of high-ozone undoped silicon dioxide film (20) having a high ozone/TEOS volume ratio on a semiconductor substrate (12). Then, a low-ozone doped BPSG film (30) is deposited over the high-ozone undoped silicon dioxide layer (20). The film layers (20, 30 are heat treated to densify the film, and then the top layer (30) is planarized using known planarization techniques to a thickness that allows for adequate mobile-ion gettering.

L'invention concerne un procédé permettant de former un film diélectrique prémétallique présentant de bonnes caractéristiques de dépôt concernant le remplissage d'espace ainsi qu'un bon potentiel de fixation du gaz par ions mobiles. Le procédé implique d'abord un premier dépôt d'une couche de film (20) de dioxyde de silicium non dopé à forte teneur en ozone présentant un rapport volumique élevé d'ozone/TEOS sur un substrat(12) à semi-conducteur. Ensuite, un film (30) de BPSG dopé à faible teneur en ozone est déposé sur la couche (20) non dopée de dioxyde de silicium à forte teneur en ozone. Les couches de film (20, 30) sont soumises à un traitement thermique pour densifier le film, et alors la couche supérieure (30) est planarisée grâce à des techniques connues de planarisation jusqu'à une épaisseur qui permet une fixation adéquate du gaz par ions mobiles.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method of forming a pre-metal dielectric film on a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of forming a pre-metal dielectric film on a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of forming a pre-metal dielectric film on a... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1467923

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.