A photosensitive assembly, comprising: a photosensitive chip, including a photosensitive area and an electric connection area located around the photosensitive area; at least one resistance-capacitance device; an expanded wiring assembly, wherein the photosensitive chip and the at least one resistance-capacitance device is electrically connected to the expanded wiring assembly, respectively, so that the at least one resistance-capacitance device and the photosensitive chip are conducted by means of the expanded wiring assembly, and the expanded wiring assembly includes an expanded wiring layer having a top surface and a bottom surface and a conducting element, wherein the top surface is opposite to the bottom surface and the top surface is farther from the photosensitive chip than the bottom surface, and the at least one resistance-capacitance device is electrically connected to the bottom surface of the expanded wiring layer, and the conducting element extends between the bottom surface of the expanded wiring layer and the electric connection area of the photosensitive chip, so as to electrically connect the photosensitive chip to the expanded wiring layer by means of the conducting element, and a light hole is formed in the expanded wiring layer and corresponds to at least the photosensitive area of the photosensitive chip; and a molded base, in which the photosensitive chip and the resistance-capacitance device are received respectively and on which the expanded wiring layer is supported; wherein the at least one resistance-capacitance device is spaced laterally apart from the conducting element; characterized in that the expanded wiring layer includes an expanded circuit having a first electric connection end and a second electric connection end, and the first electric connection end is electrically connected to the conducting element, and the second electric connection end is electrically connected to the at least one resistance-capacitance device, and a size of the first electric connection end is smaller than that of the second electric connection end. a photosensitive chip, including a photosensitive area and an electric connection area located around the photosensitive area; at least one resistance-capacitance device; an expanded wiring assembly, wherein the photosensitive chip and the at least one resistance-capacitance device is electrically connected to the expanded wiring assembly, respectively, so that the at least one resistance-capacitance device and the photosensitive chip are conducted by means of the expanded wiring assembly, and the expanded wiring assembly includes an expanded wiring layer having a top surface and a bottom surface and a conducting element, wherein the top surface is opposite to the bottom surface and the top surface is farther from the photosensitive chip than the bottom surface, and the at least one resistance-capacitance device is electrically connected to the bottom surface of the expanded wiring layer, and the conducting element extends between the bottom surface of the expanded wiring layer and the electric connection area of the photosensitive chip, so as to electrically connect the photosensitive chip to the expanded wiring layer by means of the conducting element, and a light hole is formed in the expanded wiring layer and corresponds to at least the photosensitive area of the photosensitive chip; and a molded base, in which the photosensitive chip and the resistance-capacitance device are received respectively and on which the expanded wiring layer is supported; wherein the at least one resistance-capacitance device is spaced laterally apart from the conducting element; characterized in that the expanded wiring layer includes an expanded circuit having a first electric connection end and a second electric connection end, and the first electric connection end is electrically connected to the conducting element, and the second electric connection end is electrically connected to the at least one resistance-capacitance device, and a size of the first electric connection end is smaller than that of the second electric connection end.