Integrated circuits, standard cells, and methods for generating a layout of an integrated circuit
View Patent ↗An integrated circuit according to an embodiment of the invention includes a substrate having a first cell and a second cell, the first and the second cells being adapted to perform a substantially same functionality. Corresponding functional structures of the first and the second cell are electrically connected, at different locations inside the standard cells, to information carrying signal interconnection lines, wherein the functional structures are adapted to serve as an information carrying signal input or as an information carrying signal output.
1. A standard cell of a design library, the standard cell comprising:
a first and a second power supply rail portion, wherein the first and the second power supply rail portions and a first and a second borderline of the standard cell enclose an enclosed area of an overall area of the standard cell; and
a conductive structure that carries an information carrying standard cell input signal or an information carrying standard cell output signal of the standard cell, the conductive structure being at least partially arranged outside the enclosed area such that the conductive structure is connected across at least one of the first and second rail portions to outside the enclosed area to an information carrying signal interconnection line.
2. The standard cell according to claim 1 , wherein the standard cell fulfills a logical function.
3. The standard cell according to claim 1 , wherein the conductive structure is connected outside the enclosed area by a metallic information carrying signal interconnection line.
4. The standard cell according to claim 1 , wherein the conductive structure is a poly-silicon structure extending into the direction of the first and the second borderline outside the enclosed area by more than 1.3 times the minimal width of a metallic information carrying signal interconnection line.
5. The standard cell according to claim 1 , comprising at least two transistors, which are at least partly arranged inside the enclosed area.
6. The standard cell according to claim 5 , wherein the transistors are arranged with a distance from one another of less than 3 times a minimal distance for the corresponding transistor structures of an underlying technology in which the standard cells are to be fabricated.
7. The standard cell according to claim 1 , wherein the standard cell lacks a predefined contact for at least one conductive structure adapted to carry an information signal such that a position, at which the said conductive structure is connected to an external signal interconnection line is selected after a placement of the standard cell.
8. A standard cell of an integrated circuit, the standard cell comprising:
a first and a second power supply rail portion, wherein projections of the first and the second power supply rail portion and a first and a second borderline of the standard cell enclose an enclosed area on a substrate of the integrated circuit,
a conductive structure that carries an information carrying standard cell input signal or an information carrying standard cell output signal,
wherein the conductive structure is at least partially arranged outside the enclosed area across at least one of the first and second rail portions and connected outside the enclosed area to an information carrying signal interconnection line.
9. The standard cell according to claim 8 , wherein the standard cell fulfills a logical function.
10. The standard cell according to claim 8 , comprising at least two transistors, which are partly arranged inside the enclosed area.
11. The standard cell according to claim 10 , wherein the transistors are arranged with a distance from one another of less than 3 times a minimal distance for the corresponding transistor structure of an underlying technology of the integrated circuit.