The invention relates to an array substrate for fingerprint recognition and a manufacturing method thereof and a display device. The array substrate comprises an optical induction driving unit integrated on an OLED backboard, the optical induction driving unit is used for receiving light which is emitted by an OLED light-emitting unit, penetrates through the backboard and is reflected by finger valley ridges, and line information of fingers is determined according to the intensity of the light. The optical induction driving unit is integrated on the OLED backboard, the optical induction driving unit is used for receiving the light which is emitted by the OLED light-emitting unit and reflected by the finger valley ridges, and the line information of the fingers is determined according to the intensity of the light. Thus, according to the technical scheme, the fingerprint recognition technology is applied to the field of organic light emitting displays; due to good optical characteristics of OLEDs, light intensity is high, a light path is simpler than that of an LCD, and more advantages are achieved on achieving the fingerprint touch effect. Furthermore, the fingerprint recognition function is newly added into an OLED display device, and the product added value of the OLED display device is increased.