IMAGING ELEMENT AND IMAGING APPARATUS

• Main Authors: FUKUDA KOICHI, OKAMOTO KOHEI, WAKASHIMA SHUNICHI, TAKAO TOMOMI
• Format: Patent
• Language: English; Japanese
• Published: 24.11.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION; SEMICONDUCTOR DEVICES

To provide an imaging element having pixels arranged in a matrix, in which when the S/N ratio of a focus detection signal differs in the row direction and the column direction, the performances of focus detection in the row direction and the column direction are brought closer to each other.SOLUTION: An imaging element has a plurality of microlenses arranged in a matrix in a first direction and in a second direction orthogonal to the first direction, and a plurality of photoelectric conversion units configured to photoelectrically convert light incident through each of the microlenses on at least a portion of each microlens of the plurality of microlenses. The plurality of photoelectric conversion units are arranged in at least one of the first direction and the second direction for each of the plurality of photoelectric conversion units. When the effect of noise superimposed on a signal read out from the plurality of photoelectric conversion units is greater in the second direction than in the first direction, the charge crosstalk rate in the first direction between the plurality of photoelectric conversion units is higher than the charge crosstalk rate in the second direction.SELECTED DRAWING: Figure 12 【課題】 画素が行列状に配列された撮像素子において、行方向と列方向とで焦点検出信号のＳ／Ｎ比が異なる場合に、行方向と列方向とで焦点検出の性能を近づけること。【解決手段】 第１の方向と前記第１の方向に直交する第２の方向に行列状に配置された複数のマイクロレンズと、前記複数のマイクロレンズの少なくとも一部の各マイクロレンズに対して、前記各マイクロレンズを介して入射した光を光電変換するように構成された複数の光電変換部と、を有し、前記複数の光電変換部は、前記複数の光電変換部ごとに前記第１の方向および前記第２の方向の少なくともいずれかの方向に配置され、前記複数の光電変換部から読み出される信号に重畳するノイズの影響が、前記第１の方向よりも前記第２の方向の方が大きい場合に、前記複数の光電変換部の間の前記第１の方向の電荷クロストーク率が、前記第２の方向の電荷クロストーク率よりも高いことを特徴とする。【選択図】 図１２