ROM Chip Manufacturing Structures Having Shared Gate Electrodes
First Claim
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1. A device comprising:
- a read-only-memory (ROM) array having a first row comprising;
a plurality of first ROM cells;
a plurality of second ROM cells;
a first strap cell disposed between the first ROM cells and the second ROM cells;
a first gate structure extending through each of the first ROM cells, a first end of the first gate structure being disposed in the first strap cell;
a second gate structure extending through each of the second ROM cells, a second end of the second gate structure being disposed in the first strap cell;
a third gate structure extending through each of the first ROM cells, the first strap cell, and the second ROM cells;
a first conductive feature electrically coupled to the first gate structure and the second gate structure; and
a second conductive feature electrically coupled to the third gate structure,wherein the first conductive feature and the second conductive feature are disposed in different columns of the ROM array.
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Abstract
An integrated circuit (IC) chip embodiment includes first and second ROM cells arranged in a same row of a ROM array. The first and second ROM cells include first portions of first and second gate structures, respectively. The IC chip further includes a strap cell disposed between the first and second ROM cells. The strap cell includes second portions of the first and second gate structures. The first gate structure is physically separated from the second gate structure.
4 Citations
20 Claims
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1. A device comprising:
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a read-only-memory (ROM) array having a first row comprising; a plurality of first ROM cells; a plurality of second ROM cells; a first strap cell disposed between the first ROM cells and the second ROM cells; a first gate structure extending through each of the first ROM cells, a first end of the first gate structure being disposed in the first strap cell; a second gate structure extending through each of the second ROM cells, a second end of the second gate structure being disposed in the first strap cell; a third gate structure extending through each of the first ROM cells, the first strap cell, and the second ROM cells; a first conductive feature electrically coupled to the first gate structure and the second gate structure; and a second conductive feature electrically coupled to the third gate structure, wherein the first conductive feature and the second conductive feature are disposed in different columns of the ROM array. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A device comprising:
a read-only-memory (ROM) array having a first row comprising; a first strap cell; a second strap cell; a plurality of first ROM cells disposed between the first strap cell and the second strap cell; and a first gate structure extending through each of the plurality of first ROM cells, a first end of the first gate structure being disposed in the first strap cell; a second gate structure extending through each of the plurality of first ROM cells, a second end of the second gate structure being disposed in the second strap cell, the first gate structure being substantially parallel to the second gate structure; a first conductive feature disposed in the first strap cell, the first conductive feature being coupled to the first gate structure; and a second conductive feature disposed in the second strap cell, the second conductive feature being coupled to the second gate structure. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A device comprising:
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a read-only-memory (ROM) array having a first row comprising; a first strap cell; a second strap cell; a plurality of first ROM cells disposed between the first strap cell and the second strap cell; and a first gate structure extending through each of the plurality of first ROM cells, a first end of the first gate structure being disposed in the first strap cell, a second end of the first gate structure being disposed in the second strap cell, wherein the first row of the ROM array runs in a direction substantially parallel to a lengthwise direction of the first gate structure. - View Dependent Claims (17, 18, 19, 20)
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Specification