Patent ID: 9472622
Filing Date: 2016-10-18
CPC Classification: H01L

Claim Text:
1. A semiconductor device, comprising: a substrate of a first conductivity type, the substrate having a first region and a second region defined therein; first and second trench gates disposed in the first region, positioned to be adjacent to each other, and extending in a lengthwise direction; a body disposed between the first trench gate and the second trench gate and having a second conductivity type different from the first conductivity type; emitters of the first conductivity type, disposed in the body; a floating well of the second conductivity type, defined at one side of each of the first trench gate and the second trench gate while not overlapping with the body; an emitter electrode disposed on the substrate to be connected to the emitters; a gate connection part disposed in the first region and connecting termination parts of the first and second trench gates; a field diffusion junction disposed in the second region; a first contact in contact with the gate connection part in the first region; and a first field plate having a first part and a second part and connected to the first contact on the first contact, the first part extending toward the emitter electrode with respect to the first contact along the lengthwise direction and having a first width, and the second part extending toward the field diffusion junction with respect to the first contact away from the lengthwise direction and having a second width that is greater than the first width.