PROBLEM TO BE SOLVED: To provide a biosensor that has a reduced size and thickness.SOLUTION: The biosensor includes: a light permeable substrate 21 a light emitting element 24 for emitting light to a subject from a light emitting region over a surface of the substrate 21 and a light receiving element 26 provided between the light emitting region and the subject, and for outputting a signal corresponding to the light received from the subject. The light receiving element 26 includes a light shielding layer 261 and a light receiving layer 262 each having a mountain-like shape in a planar view. The light shielding layer 261 is positioned closer to the light emitting element 24 than to the light receiving layer 262, and is formed to include the light receiving layer 262 viewed from above.COPYRIGHT: (C)2013,JPO&INPIT【課題】小型・薄型化が容易な生体センサーを提供する。【解決手段】光透過性を有する基板21と、基板21の基板面にわたった発光領域から光を被験体に向けて照射する発光素子24と、発光領域と被験体との間に設けられ、被験体からの受光に応じた信号を出力する受光素子26と、を備え、受光素子26は、それぞれ平面視で島状の遮光層261と受光層262とを含み、遮光層261は、受光層262よりも発光素子24の側に位置し、平面視で受光層262を含むように形成される。【選択図】図4
