Rear door and rear window glass

[Problem] To provide a rear door provided with an antenna capable of obtaining a high antenna gain. [Technical means] A rear door having an opening, the rear door comprising a resin outer panel, a resin inner panel, a metal reinforcement disposed between the outer panel and the inner panel, and a rear window glass covering the opening, the rear window glass includes: a demister including a first bus bar extending in a vertical direction, a second bus bar disposed at a distance from the first bus bar in a horizontal direction and extending in the vertical direction, and a plurality of electric heating wires connected between the first bus bar and the second bus bar; the auxiliary element is connected with the demister; and an antenna disposed so as to be surrounded by the demister and the auxiliary element. 【技术问题】提供一种具备能够获得较高天线增益的天线的后门。【技术手段】一种后门，其为具有开口部的后门，其包括树脂制外板、树脂制内板、配置于所述外板与所述内板之间的金属制加强件、覆盖所述开口部的后窗玻璃，所述后窗玻璃具有：具备在上下方向上延伸的第1汇流条、在水平方向上与所述第1汇流条隔开配置且在上下方向上延伸的第2汇流条、在所述第1汇流条与所述第2汇流条之间进行连接的多条电热线的除雾器；与所述除雾器连接的辅助元