Abstract:
이미지 센서는 복수의 픽셀들을 포함하는 픽셀 어레이와, 상기 복수의 픽셀들 각각의 동작을 제어하는 로우 드라이버와, 상기 복수의 픽셀들 각각에 포함된 리셋 트랜지스터에 접속된 전압 공급 라인과, 상기 전압 공급 라인의 신호를 검출하고 검출 결과에 기초하여 제1전압과 제2전압 중에서 어느 하나를 상기 전압 공급 라인으로 공급하는 전압 공급 회로를 포함한다.
Abstract:
Disclosed is an image sensor. The image sensor according to an embodiment of the invention comprises: at least one active pixel and at least one line-optical black (L-OB) pixel arranged in a matrix formation including first through n^th rows and first through m^th columns; a pixel array which outputs pixel signals and dark level offset signals for columns during a readout process on at least one of the first through n^th rows; a row driver which outputs a selection control signal for the first through n^th rows; and an analog to digital converter (ADC) block which converts the pixel signal and the dark level offset signal to a digital format, wherein the pixel array simultaneously outputs dark level offset signals for L-OB pixels included in another row during the readout process on at least one of the first through n^th rows, and n and m are integers greater than or equal to two. By using the image sensor according to an embodiment of the invention, the number of L-OB pixels contributing to the readout process on one of the rows is boosted without increase of the size of a pixel array, such that pixel specific noises are efficiently reduced.