Reticulated gate CCD pixel with diagonal strapping
View Patent ↗A sensor includes an array of pixels organized in rows and columns and a plurality of metal busses overlaying the array of pixels. A first column of pixels includes a proximal set of first pixels and a distal set of first pixels separated by a first jog region. A second column of pixels includes a proximal set of second pixels and a distal set of second pixels separated by a second jog region. The first jog region is displaced in a column direction and in a lateral direction transverse to the column direction from the second jog region. A first metal bus is insulatively disposed over both the first and second jog regions.
1. A sensor comprising an array of pixels organized in rows and columns and a plurality of metal busses overlaying the array of pixels, wherein:
a first column of pixels includes a proximal set of first pixels and a distal set of first pixels separated by a first jog region;
a second column of pixels includes a proximal set of second pixels and a distal set of second pixels separated by a second jog region;
the first jog region is displaced in a column direction and in a lateral direction transverse to the column direction from the second jog region; and
a first metal bus is insulatively disposed over both the first and second jog regions.
2. The sensor of claim 1 , wherein:
the proximal set of first pixels is disposed along a first proximal line parallel to the column direction;
the distal set of first pixels is disposed along a first distal line parallel to the column direction;
the first proximal and distal lines are displaced by a fraction of a pixel pitch in the lateral direction;
the proximal set of second pixels is disposed along a second proximal line parallel to the column direction;
the distal set of second pixels are disposed along a second distal line parallel to the column direction; and
the second proximal and distal lines are displaced by the fraction of the pixel pitch in the lateral direction.
3. The sensor of claim 2 , wherein:
each pixel includes a first region of high quantum efficiency and a second region of low quantum efficiency;
a maximum extent of the first region of a first pixel in the proximal set of first pixels defines a first reference extent;
a maximum extent of the second region of a first pixel in the proximal set of first pixels defines a first displaced extent;
a sum of the first reference extent and the first displaced extent is substantially equal to one pixel pitch.
4. The sensor of claim 3 , wherein:
a maximum extent of the first region of a first pixel in the distal set of first pixels defines a second reference extent;
the second reference extent projects in the column direction to substantially overlap the first displaced extent.
5. The sensor of claim 2 , wherein:
each pixel includes a first region of high quantum efficiency and a second region of low quantum efficiency;
a maximum extent of the first region of a first pixel in the distal set of first pixels defines a first reference extent;
a maximum extent of the second region of a first pixel in the proximal set of first pixels defines a first displaced extent; and
the first reference extent projects in the column direction to substantially overlap the first displaced extent.
6. The sensor of claim 1 , wherein:
each pixel includes a first region of high quantum efficiency and a second region of low quantum efficiency;
the first region constitutes one of a photodiode and a pinned photodiode; and
the second region constitutes a photo gate.
7. The sensor of claim 1 , wherein:
each pixel of the first column includes a first region of high quantum efficiency and a second region of low quantum efficiency;
the second region of each pixel of the first column includes a respective channel segment;
the channel segments of all pixels of the first column are linked end to end to form a first channel;
the first regions of each pixel of the proximal set of first pixels are disposed on one side of the first channel; and
the first regions of each pixel of the distal set of first pixels are disposed on another side of the first channel.
8. The sensor of claim 1 , further comprising a plurality of additional columns of pixels, wherein:
each addition column of pixels includes a corresponding jog region;
the first metal bus is further insulatively disposed over the corresponding jog regions of the plurality of additional columns of pixels.
9. The sensor of claim 8 , wherein the first metal bus is disposed at a first predetermined angle with respect to the column direction.
10. The sensor of claim 9 , wherein the first predetermined angle is substantially 45 degrees.
11. The sensor of claim 8 , wherein the first jog region, the second jog region and the corresponding jog regions of the plurality of additional columns of pixels align in a line disposed at a second predetermined angle with respect to the column direction.
12. The sensor of claim 11 , wherein the second predetermined angle is substantially 45 degrees.
13. A sensor comprising an array of pixels organized in rows and columns and a plurality of metal busses overlaying the array of pixels, wherein:
a first column of pixels includes a proximal set of first pixels and a distal set of first pixels separated by a first jog region;
a second column of pixels includes a proximal set of second pixels and a distal set of second pixels separated by a second jog region;
a first metal bus is insulatively disposed over both the first and second jog regions;
the proximal set of first pixels is disposed along a first proximal line parallel to the column direction;
the distal set of first pixels is disposed along a first distal line parallel to the column direction; and
the first proximal and distal lines are displaced by a fraction of a pixel pitch in the lateral direction.