IMAGE PICKUP DEVICE, IMAGING APPARATUS, AND MOBILE PHONE

PROBLEM TO BE SOLVED: To achieve a structure capable of controlling a pixel for focal point detection independently from another imaging pixel while maintaining sensitivity of an imaging element to achieve good image quality.SOLUTION: An image pickup device has a first semiconductor chip and a secon...

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Bibliographic Details
Main Author UCHIDA MINEO
Format Patent
LanguageEnglish
Japanese
Published 05.04.2018
Subjects
ACCESSORIES THEREFOR
APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM
BASIC ELECTRIC ELEMENTS
CINEMATOGRAPHY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
ELECTROGRAPHY
HOLOGRAPHY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHOTOGRAPHY
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
SEMICONDUCTOR DEVICES
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Summary:PROBLEM TO BE SOLVED: To achieve a structure capable of controlling a pixel for focal point detection independently from another imaging pixel while maintaining sensitivity of an imaging element to achieve good image quality.SOLUTION: An image pickup device has a first semiconductor chip and a second semiconductor chip which are stacked one on the other. The first semiconductor chip has: a pixel part composed of a first pixel group and a second pixel group in which plural pixels are arranged, the pixels each having a photoelectric conversion part, an electric-charge-to-voltage conversion part which converts an electric charge generated by the photoelectric conversion part to a voltage, a transfer part which transfers a signal of the photoelectric conversion part to the electric-charge-to-voltage conversion part, and a reset part which resets the electric charges of the pixels; and a first drive circuit which supplies each pixel in the first pixel group with drive signals of the reset part and the transfer part. The second semiconductor chip has a second drive circuit which supplies each pixel in the second pixel group with drive signals of the reset part and the transfer part.SELECTED DRAWING: Figure 4 【課題】撮像素子の感度を維持し良好な画質を得ながら、焦点検出用画素を他の撮像画素とは独立に制御することが可能な構成を実現すること。【解決手段】第１の半導体チップと第２の半導体チップとが互いに積層された撮像素子が提供される。前記第１の半導体チップは、光電変換部と、前記光電変換部で発生した電荷を電圧に変換する電荷電圧変換部と、前記光電変換部の信号を前記電荷電圧変換部に転送する転送部と、前記画素の電荷をリセットするリセット部とを備えた画素がそれぞれ複数配置された第１の画素群及び第２の画素群からなる画素部と、前記第１の画素群の各画素に前記リセット部及び前記転送部の駆動信号を供給する駆動する第１の駆動回路とを有する。前記第２の半導体チップは、前記第２の画素群の各画素に前記リセット部及び前記転送部の駆動信号を供給する第２の駆動回路を有する。【選択図】 図４
Bibliography:Application Number: JP20170208382