Patent ID: 8592812

Claim:
A device for analyzing at least one of a generated amount of positive charges, a generated amount of negative charges, and a generated amount of ultraviolet (UV) light, the device, comprising: a substrate on which at least one of a first device configured to detect a variation in threshold voltage relative to the generated amount of positive charges, a second device configured to detect a variation in threshold voltage relative to the generated amount of negative charges, and a third device configured to detect a variation in threshold voltage relative to the generated amount of UV light is formed, wherein each of the first device, the second device and the third device comprises: a first isolation region disposed in the substrate, wherein the first isolation region defines a first active region and a third active region each of a first conductivity type and a second active region and a fourth active region each of a second conductivity type different from the first conductivity type; first impurity regions disposed in the first active region and spaced apart from each other, and wherein the first impurity regions having the second conductivity type; a floating gate crossing over the first active region between the first impurity regions and extending over the second active region; a second impurity region disposed in the second active region and having the first conductivity type; and a conductive structure electrically connected to the second impurity region, wherein, in the first device, the second device and the third device, an overlap area between the second active region of the second conductive type and the floating gate is larger than an overlap area between the first active region of the first conductive type and the floating gate.