本发明提出了一种在分裂闸极沟槽晶体管器件中的接触结构，用于连接沟槽内的顶部电极和底部电极。包括一个半导体基板以及形成在半导体基板中的一个或多个沟槽。沿沟槽内部侧壁，沟槽内衬绝缘材料。在每个沟槽底部都有一个底部电极，在每个沟槽顶部都有一个顶部电极。底部电极和顶部电极通过绝缘材料分隔开。用导电材料填充的接触结构形成在器件有源区以外的区域中的每个沟槽中，以便连接顶部电极和底部电极。

Embodiments of the present disclosure provide a contact structure in a split-gate trench transistor device for electrically connecting the top electrode to the bottom electrode inside the trench. The transistor device comprises a semiconductor substrate and one or more trenches formed in the semiconductor substrate. The trenches are lined with insulating materials along the sidewalls inside the trenches. Each trench has a bottom electrode in lower potions of the trench and a top electrode in its upper portions. The bottom electrode and the top electrode are separated by an insulating material. A contact structure filled with conductive materials is formed in each trench in an area outside of an active region of the device to connect the top electrode and the bottom electrode. It is emphasized that this abstract is provided to comply with rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.