PROBLEM TO BE SOLVED: To provide a technique capable of achieving shortening of a hard part length of a tip end part including an imaging element of an imaging unit used for an endoscope or the like.SOLUTION: A three-dimensional wiring board 10 comprises: a front plate part 11 comprising on a front face 11a, an electrode pad 16 to which a solid imaging element 21 is connected； a rear plate part 12 protruded rearward from a part of an outer peripheral part of a rear face 11b of the front plate part 11； an internal conductor connection pad 14 which is formed on the rear face 11b of the front plate part 11 and to which an internal conductor 31 of a coaxial cable 30 is connected； and an external conductor connection pad 15 which is formed on a connection side principal face 12a on an aperture angle side to the front plate part 11 of the rear plate part 12, and to which an external conductor 32 of the coaxial cable 30 is connected, in which the internal conductor connection pad 14 and the external conductor connection pad 15 are conducted to the electrode pad 16 of the front plate part front face 11a. An imaging unit 20 comprises the three-dimensional wiring board 10 and the solid imaging element 21.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】内視鏡等に用いられる撮像ユニットの撮像素子を含む先端部の硬性部長の短縮を実現できる技術の提供。【解決手段】固体撮像素子２１が接続される電極パッド１６が前面１１ａに形成された前板部１１と、前板部１１の後面１１ｂの外周部の一部から後側へ突出する後板部１２と、前板部１１の後面１１ｂに形成され同軸ケーブル３０の内部導体３１が接続される内部導体接続パッド１４と、後板部１２の前板部１１に対する開き角側の接続側主面１２ａに形成され同軸ケーブル３０の外部導体３２が接続される外部導体接続パッド１５とを有し、内部導体接続パッド１４及び外部導体接続パッド１５はそれぞれ前板部前面１１ａの電極パッド１６と導通されている立体配線基板１０、この立体配線基板１０及び固体撮像素子２１を有する撮像ユニット２０を提供する。【選択図】図１
