| 摘要 |
In a two-dimensional CCD image sensor, vertical transfer channels (6) are arranged to receive charge packets from a matrix array of photodiodes (1), and row electrodes (3) are connected to the vertical transfer channels for shifting the charge packets row by row along the vertical transfer channels. A horizontal transfer channel (14), arranged to receive charge packets from the vertical transfer channels (6), is formed with multiple patterns of doped adjoining regions, each having a first and a second set of a storage region (A1, A2) and two barrier regions (B1, C1, B2, C2). The barrier regions (B1, C1) of the first set are connected to a corresponding vertical transfer channel (6-1) to exclusively receive charge packets therefrom. Multiple groups of electrodes are successively arranged on the horizontal transfer channel. Each of the groups has first, second, third and fourth electrodes (27, 28, 29, 30), the first and second electrodes being connected together and the third and fourth electrodes being connected together for shifting charge packets along the horizontal transfer channel. The first and third electrodes (27-1, 29-1) respectively overlie the storage regions of the first and second sets (A1, A2), and the second electrode (28-1) overlies the barrier regions of the first set (B1, C1) and partially overlaps the final row electrode with an insulating layer interposed therebetween, and the fourth electrode (30-1) overlies the barrier regions of the second set (B2, C2). <IMAGE> |
