Controllable semiconductor component with multi-section control electrode
View Patent ↗The controllable semiconductor component ( 1 ) has a body ( 10 ) consisting of doped silicon. Two separate electrodes ( 3, 4 ) are connected to the silicon, between which an electric operating voltage (U) of the component ( 1 ) is applied. A control electrode ( 2 ), to which an electric control voltage (Us) for controlling the component ( 1 ) is applied, is insulated from the silicon of the body ( 10 ) by electric insulation material ( 100 ). According to the invention, the control electrode ( 2 ) has two control electrode sections ( 21, 22 ), separated from one another by a gap ( 23 ). Said semiconductor component can be used for IGBTs and MOS transistors.
1. A controllable semiconductor component comprising:
a body of doped semiconductor material,
two electrodes that are separated from each other, each contacting the doped semiconductor material of the body, and whereby an electric operating voltage of the component can be applied between them, and
a control electrode which is insulated from the semiconductor material of the body by electrically insulating material and to which an electric control voltage can be applied to control the component, whereby
the control electrode has at least a-first and second control electrode sections separated from one another by at least one gap and wherein said first control electrode section covers a smaller area than said second control electrode section, and wherein said first control electrode section is connected across an electric resistor to a control terminal of the component for applying the control voltage and the electric resistor is connected between said first and second control electrode sections.
2. The component according to claim 1 , whereby the body consists of semiconductor material of different types of conduction and whereby one of the two electrodes contacts semiconductor material of one type of conduction of the body, and the other electrode contacts semiconductor material of a type of conduction of the body opposite the one type of conduction of the body.
3. The component according to claim 2 whereby one of the two electrodes is an electrode of the component and the other electrode is an anode of the component.
4. The component according to claim 1 , whereby the body is made of semiconductor material of at least one type of conduction and whereby each of the two electrodes contacts semiconductor material of the same type of conduction of the body.
5. The component according to claim 4 , whereby one of the two electrodes is a source electrode of the component and the other electrode is a drain electrode of the component.
6. The component according to claim 1 , whereby one of the two electrodes is an electrode of the component and the other electrode is an anode of the component.
7. The component according to claim 1 , whereby one of the two electrodes is a source electrode of the component and the other electrode is a drain electrode of the component.
8. The component according to claim 1 , wherein said first control electrode section is insulated from the semiconductor material of the body by an insulating layer having a first thickness and said second control electrode section is insulated from the semiconductor material of the body by an insulating layer having a second thickness, wherein the first thickness is smaller than the second thickness.
9. The component according to claim 1 , wherein said at least one gap is filled with a solid electrically insulating material.
10. The component according to claim 9 , wherein said solid electrically insulating material is polyimide.
11. A controllable semiconductor component comprising:
a body of doped semiconductor material,
two electrodes that are separated from each other, each contacting the doped semiconductor material of the body, and whereby an electric operating voltage of the component can be applied between them, and
a control electrode which is insulated from the semiconductor material of the body by electrically insulating material and to which an electric control voltage can be applied to control the component, whereby
the control electrode has at least first and second control electrode sections separated from one another by at least one gap and wherein said first control electrode section covers a smaller area than said second control electrode section, wherein said first control electrode section is connected across an electric resistor to a control terminal of the component for applying the control voltage and wherein said second control electrode section which is different from the first control electrode section connected across the electric resistor to the control terminal of the component is connected to one of the two electrodes.
12. The component according to claim 11 , whereby the body consists of semiconductor material of different types of conduction and whereby one of the two electrodes contacts semiconductor material of one type of conduction of the body, and the other electrode contacts semiconductor material of a type of conduction of the body opposite the one type of conduction of the body.
13. The component according to claim 12 whereby one of the two electrodes is an electrode of the component and the other electrode is an anode of the component.
14. The component according to claim 11 , whereby the body is made of semiconductor material of at least one type of conduction and whereby each of the two electrodes contacts semiconductor material of the same type of conduction of the body.
15. The component according to claim 14 , whereby one of the two electrodes is a source electrode of the component and the other electrode is a drain electrode of the component.