Fabrication of 2D pH CMOS image sensors and real time imaging of chemical reaction

We present about pH image sensors, which are capable of measuring 2D distribution of various chemical reaction in real time. The pH CMOS image sensor using charge transfer technique is a novel pH sensor and imaging sensor that is capable of measuring variations on the chemical reaction as an image, and it was fabricated by CMOS (complimentary metal-oxide semiconductor) circuit process technology. Prototype pH CMOS image sensors are successfully fabricated and measured 2D distribution of various chemical reactions in moving image at 1/30 sec per 1 frame. It is expected that the pH CMOS image sensor is able to use for novel applications such as medical and biochemistry field.