The present invention relates to an X-ray detector or an image sensor which can be implemented as a CMOS-based single chip capable of high performance, high resolution, large-area and large-area expansion, a semiconductor substrate, an array on the upper surface of the semiconductor substrate, A plurality of pixel blocks capable of sensing an optical signal; a plurality of pixel blocks arranged corresponding to the respective pixel blocks on a lower surface of the semiconductor substrate, the pixel blocks including an analog-digital conversion (ADC) An X-ray detector or an image sensor that can be implemented as a CMOS-based single chip and includes a conductive pattern that is capable of electrically connecting the pixel block and the lower corresponding circuit portion through the lower corresponding circuit portion and the semiconductor substrate, / RTI
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