US 5,497,047 AGranted

Fluorescent display device

AssigneeFutaba Denshi Kogyo K.K.

InventorsHisashi Nakata, Yoshihisa Yonezawa, Yasuhiro Nohara

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Abstract

A fluorescent display device capable of realizing mounting of a semiconductor element on a substrate while ensuring an increase in moisture resistance, a decrease in contact resistance at connection between the semiconductor element and a wiring conductor and increased reliability. A semiconductor element is mounted on an extension of a substrate and received in a mounting chamber formed by cooperation of a sealing material, a face plate and the substrate. The semiconductor element is downwardly pressed against the substrate by the face plate, resulting in the semiconductor element being electrically connected to a wiring conductor. The sealing material is made of an inorganic material such as indium-tin alloy or the like which has an operating temperature lower than a sealing medium.

Claims3

Dependent claims

A fluorescent display device comprising:

a body assembled by means of a sealing medium and including a substrate and a wiring conductor provided on said substrate;
said substrate including an extension formed so as to outwardly extend from said body;
said wiring conductor being formed so as to extend from an interior of said body to said extension of said substrate;
a semiconductor element arranged on said extension of said substrate and provided with metal bumps electrically connected to said wiring conductor;
a face plate arranged so as to interposedly holding said semiconductor element between said face plate and said extension of said substrate;
and
a sealing material arranged between a periphery of said face plate and said extension of said substrate to form a mounting chamber in cooperation with said face plate and extension in which said semiconductor element is mounted;
said sealing material being made of an in organic material having an operating temperature lower than said sealing medium of said body.

5 more elements

Dependencies are inferred from the claim text.