SEMICONDUCTOR DEVICE

SEMICONDUCTOR DEVICE

PROBLEM TO BE SOLVED: To improve heat radiation in a semiconductor device wherein a lead frame mounting a semiconductor element is connected with a heat sink. SOLUTION: On a surface where a lead frame 2 at a heat sink 7 is connected, such a groove 7a as surround an area to which a connecting agent 4...

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Hauptverfasser: SAITO MITSUHIRO, NAGATANI TOSHIHIRO
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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creator SAITO MITSUHIRO
NAGATANI TOSHIHIRO
description PROBLEM TO BE SOLVED: To improve heat radiation in a semiconductor device wherein a lead frame mounting a semiconductor element is connected with a heat sink. SOLUTION: On a surface where a lead frame 2 at a heat sink 7 is connected, such a groove 7a as surround an area to which a connecting agent 4b is applied is formed. By constitution like this, while the connection of the heat sink 7 and the lead frame 2 is secured by an adhesive 4b charged into the groove 7a formed at the heat sink 7, the adhesive 4b is not interposed for direct contact with the lead frame 2 in an area of the heat sink 7 except for an area in which the groove 7a is formed, As a result, heat generated by a power chip 1a is efficiently radiated to the outside via the heat sink 7. COPYRIGHT: (C)2005,JPO&NCIPI
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SOLUTION: On a surface where a lead frame 2 at a heat sink 7 is connected, such a groove 7a as surround an area to which a connecting agent 4b is applied is formed. By constitution like this, while the connection of the heat sink 7 and the lead frame 2 is secured by an adhesive 4b charged into the groove 7a formed at the heat sink 7, the adhesive 4b is not interposed for direct contact with the lead frame 2 in an area of the heat sink 7 except for an area in which the groove 7a is formed, As a result, heat generated by a power chip 1a is efficiently radiated to the outside via the heat sink 7. 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subjects BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
title SEMICONDUCTOR DEVICE
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