Semiconductor porcelain having positive resistance temperature characteristic

Abstract

Abstract PURPOSE:To eliminate the need for connecting respective elements in parallel by the use of external circuits and miniaturize semiconductor ceramics, by connecting each element in parallel between respective elements of a laminate which has positive resistance thermal characteristics and is laminated by more than two kinds of the elements having different characteristics, thereby forming an internal electrode. CONSTITUTION:External electrodes 6 and 6 are formed at both sides of semiconductor ceramics 4 and a structure laminated by semiconductor ceramic elements 1a-1e having positive resistance thermal characteristics is formed between the external electrodes 6 and 6 where internal electrodes 5 are held between the above elements 1a-1e. Out of the elements 1a-1e, a group of element 1c and 1e and the other group of elements 1a, 1b, and 1d have different compositions each other. And then, these ceramics are manufactured by the following process; each green sheet single body and each green sheet coated with a paste 2 are laminated in order so that each end part of the paste 2 is placed alternately in a manner as shown in Fig. And each one is pressed with heat and then is burnt to obtain the semiconductor ceramics 4 having positive thermal characteristics where laminated porous layers are formed. Such being the case, once a metallic solution is injected into the porous layers, internal electrodes are formed and the external electrodes 6 and 6 are installed at both ends of the semiconductor ceramics 4.

Inventors

• 👤 Norimitsu Kito
• 👤 鬼頭　範光
• 👤 Kenji Ijichi
• 👤 伊地知　憲二
• 👤 Yasuyuki Naito
• 👤 康行 内藤
• 👤 Yutaka Shimabara
• 👤 豊 島原
• 👤 Masanori Nishibori
• 👤 西堀　正範

Bibliographic Details