| 摘要 |
PURPOSE:To restrain the bonding strength of a conductive adhesive film from being lowered due to variation with time, and thereby reduce the occurrence of insufficient shortcircuiting due to a reduction of the aforesaid bonding strength. CONSTITUTION:A case 12 in a flat shape consists of a first terminal, and a terminal plate 18 a part of which is exposed to an opening 20 provided for the case 12 consists of a second terminal. A first and a second functional material 15 and 16 are disposed within the case 12 via a separator 17, the first functional material 15 is bonded onto the terminal plate 18 via a conductive adhesive film 21, and the second functional material 16 is also bonded onto the case 12 via a conductive film 22. Polyisobutylene whose viscosity average molecular weight is more than 8,000 staudinger, preferably in the range of 10,000 to 150,000 staudinger, is mixed with 40 to 80% graphite or carbon black by weight as conductive agent so as to be used as the conductive films 21 and 22. |
