Side door window structure of motor vehicle

A side door window structure of a motor vehicle, comprising a side door with a side door window and an area of vehicle body, which is arranged close to the side door window, wherein the side door window is moveable upward and downward and arranged frameless in the side door, wherein the side door window comprising at least two glass panes, an inside glass pane and an outside glass pane, wherein an upside end of the outside glass pane is lower than an upside end of the inside glass pane, wherein an outer surface of the outside glass pane is arranged flush with an outer surface of a roof skin of the vehicle body and/or decorative trim part attached to the roof skin in a closed position of the side door and the side door window, wherein inside glass pane reaches in the closed position of the side door and the side door window inside a channel and the outside glass pane is arranged outside the channel,

• wherein the channel is formed as a separate component and attached to the roof skin or the channel and the roof skin are integrally formed,
• when the channel is formed by a separate component and attached to the roof skin, an end portion of the channel is held by an end portion of the roof skin, and the end portion of the roof skin is folded around the end portion of the channel,
• when the channel and the roof skin are integrally formed, the channel is formed by a folded sheet material of the roof skin.