Around twenty years have elapsed since the first IGBT concept has been introduced in the paper.During this time IGBT chip technology has evolved through each several generations with big improvements in performances.And then, the present IGBT devices.IGBT Modules and Intelligent Power Modules(IPM) including IGBT Chips,have been known as the preferred power semiconductor devices.The most important items for improvement of IGBT performance are to reduce the power loss and to maintain the Safe Operating Area (SOA).In these items, there exist the triangular Trade-off relation-ship each other,which have been optimized with a new chip technology. This paper will summarize the history and latest IGBT technology. Around twenty years have elapsed since the first IGBT concept has been introduced in the paper. During this time IGBT chip technology has evolved through several generations with big improvements in performance. Then then, the present IGBT devices. IGT Modules and Intelligent Power Modules IPM) including IGBT Chips, have been known as the preferred power semiconductor devices. Most important items for improvement of IGBT performance are to reduce the power loss and maintain the Safe Operating Area (SOA). These items, there exist the triangular Trade-off relation-ship each other, which have been optimized with a new chip technology. This paper will summarize the history and latest IGBT technology.