التفاصيل البيبلوغرافية
| العنوان: |
IMAGE PICKUP APPARATUS |
| Document Number: |
20120312964 |
| تاريخ النشر: |
December 13, 2012 |
| Appl. No: |
13/486719 |
| Application Filed: |
June 01, 2012 |
| مستخلص: |
An image pickup apparatus includes a plurality of pixels each including a read-out node to which an electric charge generated in a photoelectric conversion unit is transferred, an output unit configured to convert the electric charge transferred to the read-out node into a voltage and output the resultant voltage to a signal line, and a switch including a first node electrically connected to the read-out node. Each switch includes a second node different from the first node, and a particular number of second nodes are electrically connected to a common bypass wiring. |
| Inventors: |
Yamashita, Yuichiro (Ebina-shi, JP); Shimizu, Shinichiro (Yokohama-shi, JP); Koizumi, Toru (Yokohama-shi, JP); Matsuda, Takashi (Yokohama-shi, JP) |
| Assignees: |
CANON KABUSHIKI KAISHA (Tokyo, JP) |
| Claim: |
1. An image pickup apparatus comprising a plurality of pixels each including a read-out node to which an electric charge generated in a photoelectric conversion unit is transferred, an output unit configured to convert the electric charge transferred to the read-out node into a voltage and output the voltage to a signal line, and a switch including a first node electrically connected to the read-out node, wherein each switch includes a second node different from the first node, and a predetermined number of second nodes are electrically connected to a common bypass wiring. |
| Claim: |
2. The image pickup apparatus according to claim 1, wherein electric charges transferred to a plurality of read-out nodes are added together via a plurality of switches and a bypass wiring. |
| Claim: |
3. The image pickup apparatus according to claim 1, wherein each pixel further includes a transfer unit disposed in an electrical path between the photoelectric conversion unit and the first node. |
| Claim: |
4. The image pickup apparatus according to claim 1, wherein pixels of a first color and pixels of a second color are arranged alternately, second nodes of switches included in the respective pixels of the first color are connected in common to a first bypass wiring, and second nodes of switches included in the respective pixels of the second color are connected in common to a second bypass wiring. |
| Claim: |
5. The image pickup apparatus according to claim 1, wherein the pixels are arranged in a matrix, and a plurality of signal lines are provided in each pixel column. |
| Claim: |
6. The image pickup apparatus according to claim 1, wherein the pixels are arranged in a matrix, a plurality of signal lines are provided in each pixel column, pixels of a first color and pixels of a second color are arranged alternately in each pixel column, second nodes of switches included in the respective pixels of the first color are connected in common to a first bypass wiring, second nodes of switches included in the respective pixels of the second color are connected in common to a second bypass wiring, signals from the pixels of the first color are output to a first signal line, and signals from the pixels of the second color are output to a second signal line. |
| Claim: |
7. The image pickup apparatus according to claim 6, wherein the first bypass wiring and the second bypass wiring are electrically isolated from each other. |
| Claim: |
8. The image pickup apparatus according to claim 6, wherein the output unit includes a non-inverting amplifier, and the distance between the first bypass wiring and the second signal line is greater than the distance between the first bypass wiring and the first signal line. |
| Claim: |
9. The image pickup apparatus according to claim 1, wherein an electric charge generated in a first photoelectric conversion unit and an electric charge generated in a second photoelectric conversion unit are transferred by depletion transfer to the read-out node. |
| Claim: |
10. An image pickup apparatus comprising a plurality of pixels each including a read-out node to which an electric charge generated in a photoelectric conversion unit is transferred, an output unit configured to convert the electric charge transferred to the read-out node into a voltage and output the resultant voltage to a signal line, and a switch including a first node electrically connected to the read-out node, wherein each switch includes a second node different from the first node, a particular number of second nodes are electrically connected to a common bypass wiring, the pixels are arranged in a matrix, a plurality of signal lines are provided in each pixel column, pixels of a first color and pixels of a second color are arranged alternately in each pixel column, second nodes of switches included in the respective pixels of the first color are connected in common to a first bypass wiring, second nodes of switches included in the respective pixels of the second color are connected in common to a second bypass wiring, signals from the pixels of the first color are output to a first signal line, signals from the pixels of the second color are output to a second signal line, the output unit includes a non-inverting amplifier, and the distance between the first bypass wiring and the second signal line is greater than the distance between the first bypass wiring and the first signal line. |
| Claim: |
11. A method of driving an image pickup apparatus including a plurality of pixels each including a read-out node to which an electric charge generated in a photoelectric conversion unit is transferred, an output unit configured to convert the electric charge transferred to the read-out node into a voltage and output the resultant voltage to a signal line, and a switch including a first node electrically connected to the read-out node, the method comprising: turning on a plurality of switches such that electric charges transferred to a plurality of read-out nodes are added together via a common bypass wiring electrically connected to a second node, different from the first node, of each switch. |
| Claim: |
12. The method according to claim 11, wherein the plurality of switches are turned into an off-state and signals of respective pixels are read out independently. |
| Claim: |
13. The method according to claim 11, wherein among the switches with the second node electrically connected to the common bypass wiring, a particular number of switches are turned on to increase the capacitance of the node. |
| Claim: |
14. The method according to claim 11, wherein signals of a plurality of pixels are simultaneously output to a plurality of signal lines provided in each pixel column. |
| Claim: |
15. The method according to claim 14, wherein the signals simultaneously output to the signal lines are each a signal obtained by adding the signals of the plurality of pixels. |
| Current U.S. Class: |
2502/081 |
| Current International Class: |
01 |
| رقم الانضمام: |
edspap.20120312964 |
| قاعدة البيانات: |
USPTO Patent Applications |