Patent ID: 8227741
Filing Date: 2012-07-24
Classification: H01L,Y02E

Abstract:
1. A photoelectric conversion device comprising: a photoelectric conversion element; a photocurrent output circuit configured to provide a first current corresponding to an amount of incident light on the photoelectric conversion element; a photocurrent correcting circuit including a corrective photoelectric conversion element configured to provide a second current, the corrective photoelectric conversion element including a light shield film for shielding the corrective photoelectric conversion element from light wherein the light shield film has a transmittance a where a satisfies 0<a<1; a photocurrent adder circuit configured to provide a fourth current; and an amplifier circuit configured to amplify a current corresponding to the sum of the first current and the fourth current and to output the amplified current, wherein the second current is 1/a times a photocurrent corresponding to the amount of incident light on the corrective photoelectric conversion element, and wherein the fourth current is 1/(1−a) times a third current corresponding to a difference between the second current and the first current.