SEMICONDUCTOR DEVICE MANUFACTURING METHOD

To improve reliability of a semiconductor device.SOLUTION: An insulation film (PA) is formed so as to cover a source electrode SE and a gate electrode GE, and an opening part (OPS), through which a part of the source electrode SE is exposed, and an opening part (OPG), through which a part of the gat...

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1. Verfasser: TONEGAWA TAKESHI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To improve reliability of a semiconductor device.SOLUTION: An insulation film (PA) is formed so as to cover a source electrode SE and a gate electrode GE, and an opening part (OPS), through which a part of the source electrode SE is exposed, and an opening part (OPG), through which a part of the gate electrode GE is exposed, are formed in the insulation film (PA). A plating layer PLS is formed on the source electrode SE exposed through the opening part (OPS), and a plating layer PLG is formed on the gate electrode GE exposed through the opening part (OPG). A source pad (PDS) is formed by the part of the source electrode SE exposed through the opening part (OPS) and the plating layer PLS, and a gate pad (PDG) is formed by the part of the gate electrode GE exposed through the opening part (OPG) and the plating layer PLG. An area of the opening part (OPG) for the gate pad is smaller than an area of the opening part (OPS) for the source pad, and a thickness of the plating layer PLG is thicker than a thickness of the plating layer PLS.SELECTED DRAWING: Figure 14 【課題】半導体装置の信頼性を向上させる。【解決手段】ソース電極SEおよびゲート電極GEを覆うように絶縁膜(PA)が形成され、その絶縁膜(PA)に、ソース電極SEの一部を露出する開口部(OPS)とゲート電極GEの一部を露出する開口部(OPG)とが形成されている。開口部(OPS)から露出するソース電極SE上には、めっき層PLSが形成され、開口部(OPG)から露出するゲート電極GE上には、めっき層PLGが形成されている。開口部(OPS)から露出する部分のソース電極SEとめっき層PLSとにより、ソースパッド(PDS)が形成され、開口部(OPG)から露出する部分のゲート電極GEとめっき層PLGとにより、ゲートパッド(PDG)が形成される。ゲートパッド用の開口部(OPG)の面積は、ソースパッド用の開口部(OPS)の面積よりも小さく、めっき層PLGの厚さは、めっき層PLSの厚さよりも厚い。【選択図】図14