The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 2015
Filed:
Nov. 22, 2011
Evelyne Gridelet, Omal, BE;
Tony Vanhoucke, Bierbeek, BE;
Johannes Josephus Theodorus Marinus Donkers, Valkenswaard, NL;
Hans Mertens, Leuven, BE;
Blandine Duriez, Brussels, BE;
Evelyne Gridelet, Omal, BE;
Tony Vanhoucke, Bierbeek, BE;
Johannes Josephus Theodorus Marinus Donkers, Valkenswaard, NL;
Hans Mertens, Leuven, BE;
Blandine Duriez, Brussels, BE;
NXP B.V., Eindhoven, NL;
Abstract
Consistent with an example embodiment, there is method of manufacturing a bipolar transistor comprising providing a substrate including an active region; depositing a layer stack; forming a base window over the active region in said layer stack; forming at least one pillar in the base window, wherein a part of the pillar is resistant to polishing; depositing an emitter material over the resultant structure, thereby filling said base window; and planarizing the deposited emitter material by polishing. Consistent with another example embodiment, a bipolar transistor may be manufactured according to the afore-mentioned method.