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:
Mar. 26, 2013
Filed:
Mar. 18, 2009
Shintarou Tsukigata, Annaka, JP;
Toshifumi Matsuoka, Tokyo, JP;
Kenji Yamamoto, Annaka, JP;
Toyohiro Ueguri, Annaka, JP;
Naoki Ishikawa, Annaka, JP;
Hiroyuki Otsuka, Annaka, JP;
Shintarou Tsukigata, Annaka, JP;
Toshifumi Matsuoka, Tokyo, JP;
Kenji Yamamoto, Annaka, JP;
Toyohiro Ueguri, Annaka, JP;
Naoki Ishikawa, Annaka, JP;
Hiroyuki Otsuka, Annaka, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
Disclosed is a phosphorus paste for diffusion that is used in continuous printing of a phosphorus paste for diffusion on a substrate by screen printing. The phosphorus paste for diffusion does not undergo a significant influence of ambient humidity on viscosity and has no possibility of thickening even after a large number of times of continuous printing. The phosphorus paste for diffusion is coated on a substrate by screen printing for diffusion layer formation on the substrate. The phosphorus paste for diffusion includes a doping agent containing phosphorus as a dopant for the diffusion layer, a thixotropic agent containing an organic binder and a solid matter, and an organic solvent. The doping agent is an organic phosphorus compound.