Solid state image pick-up device, semiconductor device, and camera system having auxiliary replacement pixels
A solid-state image pickup device includes a pixel array including pixels, each having a photoelectric conversion element and a detecting unit detecting an acquired electric signal, arranged in a matrix, a signal line provided for each column of the pixel array and connected to the detecting unit through a switching element, a selection line provided for each row of the pixel array and supplied with a selection pulse causing the switching element to conduct, a resetting unit provided in each pixel constituting the pixel array and applying a predetermined potential to the detecting unit of the pixel, and an output control unit provided in each pixel constituting the pixel array and causing the switching element of the pixel to conduct according to the selection pulse supplied to another selection line connected to another switching element of another pixel belonging to another row.
1. A solid-state image pickup device comprising:
a pixel array in which pixels, each having a photoelectric conversion element and a detecting unit detecting an electric signal acquired by the photoelectric conversion element, are arranged in a matrix form;
a signal line that is provided for each vertical column of the pixel array and is connected to the detecting unit through a switching element;
a selection line that is provided for each horizontal row of the pixel array and is supplied with a selection pulse that causes the switching element to conduct;
a resetting unit that is provided in each of the pixels constituting the pixel array and applies a predetermined potential to the detecting unit of the pixel; and
an output control unit that is provided in each of the pixels constituting the pixel array and causes the switching element of the pixel to conduct in accordance with the selection pulse supplied to another selection line connected to another switching element of another pixel that belongs to a row different from that of the pixel, and wherein the output control unit selectively activates an auxiliary pixel to replace a deactivated defective pixel, and further wherein the deactivated pixel is disabled such that it does not provide an output signal and the activated auxiliary pixel is a pixel that only provides a pixel output that is substituted for the output of the corresponding deactivated pixel.
2. The device according to claim 1 , wherein the pixel and the other pixel that belongs to the row different from that of the pixel are connected to the same signal line.
3. The device according to claim 1 , wherein the pixel and the other pixel that belongs to the row different from that of the pixel have the same spectral sensitivity.
4. The device according to claim 1 , wherein the pixel and the other pixel that belongs to the row different from that of the pixel are neighboring pixels.
5. The solid-state image pickup device according to claim 1 , wherein deactivation of a defective pixel is comprised of disconnecting at least one fuse connection.
6. The solid-state image pickup device according to claim 1 , wherein activation of a replacement pixel is comprised of disconnecting at least one fuse connection.
7. The solid-state image pickup device according to claim 1 , wherein deactivation of a defective pixel and activation of a replacement pixel is comprised of disconnecting at least two fuse connections.
8. The solid-state image pickup device according to claim 1 , wherein at least some of the pixels have more than one replacement pixel.
9. A semiconductor device comprising:
an element array in which elements, each performing a predetermined operation in response to application of a selection signal, are regularly arranged;
a deactivating unit that is provided in each of the elements constituting the element array and deactivates the predetermined operation of the element; and
an activating unit that is provided in each of the elements constituting the element array and causes the element to perform the predetermined operation in response to application of the selection signal to an auxiliary element arranged near the element, and further wherein the deactivated element is disabled such that it does not provide an output signal and the activated auxiliary element only provides an output that is substituted for the output of the corresponding deactivated element.
10. The semiconductor device according to claim 9 , wherein deactivation of a defective element is comprised of disconnecting at least one fuse connection.
11. The semiconductor device according to claim 9 , wherein activation of a replacement element is comprised of disconnecting at least one fuse connection.
12. The semiconductor device according to claim 9 , wherein deactivation of a defective element and activation of a replacement element is comprised of disconnecting at least two fuse connections.
13. The semiconductor device according to claim 9 , wherein at least some of the elements have more than one replacement element.
14. A camera system comprising:
a pixel array in which pixels, each having a photoelectric conversion element and a detecting unit detecting an electric signal acquired by the photoelectric conversion element, are arranged in a matrix form;
a signal line that is provided for each vertical column of the pixel array and is connected to the detecting unit through a switching element;
a selection line that is provided for each horizontal row of the pixel array and is supplied with a selection pulse that causes the switching element to conduct;
a resetting unit that is provided in each of the pixels constituting the pixel array and applies a predetermined potential to the detecting unit of the pixel;
an output control unit that is provided in each of the pixels constituting the pixel array and causes the switching element of the pixel to conduct in accordance with the selection pulse supplied to another selection line connected to another switching element of another pixel that belongs to a row different from that of the pixel, and wherein the output control unit selectively activates an auxiliary pixel to replace a deactivated defective pixel, and further wherein the deactivated pixel is disabled such that it does not provide an output signal and the activated auxiliary pixel is a pixel that only provides a pixel output that is substituted for the output of the corresponding deactivated pixel; and
an optical system that leads incident light to the pixel array.
15. The camera system according to claim 14 , wherein deactivation of a defective pixel is comprised of disconnecting at least one fuse connection.
16. The camera system according to claim 14 , wherein activation of a replacement pixel is comprised of disconnecting at least one fuse connection.
17. The camera system according to claim 14 , wherein deactivation of a defective pixel and activation of a replacement pixel is comprised of disconnecting at least two fuse connections.
18. The camera system according to claim 6 , wherein wherein at least some of the pixels have more than one replacement pixel.