Semiconductor device having an electrical connection between a control electrode and a resistive layer
First Claim
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1. A semiconductor device, comprising:
- a suspending unit;
a resin case being box-shaped and electrically insulative and having a bottom provided with said suspending unit;
a circuit board provided on said suspending unit, having a prescribed circuit pattern;
at least one switching element provided on said circuit board, having a control electrode;
a signal terminal plate for introducing a control signal to be applied to said control electrode of said at least one switching element; and
a resistor electrically interposed between said control electrode and said signal terminal plate,wherein said resistor includes,an insulator plate;
a resistive layer made of thin metal film and selectively provided on one main surface of said insulator plate;
a first electrode layer provided on only said one main surface of said insulator plate and connected to said resistive layer, serving as one of current input/output portions of said resistive layer; and
a second electrode layer extending from said one main surface to the other main surface of said insulator plate and connected to said resistive layer, serving as the other current input/output portion of said resistive layer, andwherein an electrical connection between said control electrode and said resistive layer is made by bonding a wire line direct between said control electrode and said first electrode layer.
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Abstract
A terminal base (N1) is electrically connected to a conductive foil pattern (201), and a terminal base (N2) is electrically connected to switching elements (T1, T2, T3). The control electrodes of the switching elements (T1, T2, T3) are electrically connected to resistors (R10, R20, R30) with wire lines (WL). Thus, by using the resistors on which the wire lines can be bonded direct, a size-reduced semiconductor device is provided.
44 Citations
7 Claims
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1. A semiconductor device, comprising:
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a suspending unit; a resin case being box-shaped and electrically insulative and having a bottom provided with said suspending unit; a circuit board provided on said suspending unit, having a prescribed circuit pattern; at least one switching element provided on said circuit board, having a control electrode; a signal terminal plate for introducing a control signal to be applied to said control electrode of said at least one switching element; and a resistor electrically interposed between said control electrode and said signal terminal plate, wherein said resistor includes, an insulator plate; a resistive layer made of thin metal film and selectively provided on one main surface of said insulator plate; a first electrode layer provided on only said one main surface of said insulator plate and connected to said resistive layer, serving as one of current input/output portions of said resistive layer; and a second electrode layer extending from said one main surface to the other main surface of said insulator plate and connected to said resistive layer, serving as the other current input/output portion of said resistive layer, and wherein an electrical connection between said control electrode and said resistive layer is made by bonding a wire line direct between said control electrode and said first electrode layer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification