IMAGING DEVICE AND IMAGING APPARATUS

• Main Author: MURATA HIRONOBU
• Format: Patent
• Language: English; Japanese
• Published: 10.11.2016
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION; SEMICONDUCTOR DEVICES

PROBLEM TO BE SOLVED: To provide an imaging device that prevents saturation of accumulated charges even when a light amount is large.SOLUTION: A pixel 103 includes: a capacitor 105; a reset switch 113; and a peripheral circuit 12. The peripheral circuit includes a comparator 106 and an integration part 107. An upper electrode 103a is connected to a power source Va that applies a predetermined bias voltage. Holes of charges generated at an organic photoelectric conversion film 10 by the power source are attracted to the upper electrode. From a lower electrode 103b, potential based on electrons of charges generated at the organic photoelectric conversion film is extracted.SELECTED DRAWING: Figure 4 【課題】光量が多い場合でも、蓄積する電荷が飽和することを防止する撮像素子を提供する。【解決手段】画素１０３は、キャパシタ１０５、リセットスイッチ１１３、および周辺回路１２を備える。周辺回路には比較部１０６および積算部１０７が含まれる。上部電極１０３ａには所定のバイアス電圧を印加する電源Ｖａが接続されている。電源によって有機光電変換膜１０で発生した電荷のうちの正孔は、上部電極に引き寄せられる。下部電極１０３ｂからは、有機光電変換膜で発生した電荷のうちの電子に基づく電位が取り出される。【選択図】図４