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1. (WO2018177217) SHIELD STRUCTURE FOR A LOW CROSSTALK SINGLE ENDED CLOCK DISTRIBUTION CIRCUIT

Pub. No.:    WO/2018/177217    International Application No.:    PCT/CN2018/080277
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Sat Mar 24 00:59:59 CET 2018
IPC: H01L 23/552
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
Inventors: PETROV, Dmitry
XIANG, Zhonggui
Title: SHIELD STRUCTURE FOR A LOW CROSSTALK SINGLE ENDED CLOCK DISTRIBUTION CIRCUIT
Abstract:
An integrated circuit is described. The integrated circuit includes a first layer, a first clock line for carrying a first clock signal, and a second clock line for carrying a second clock signal. The second clock line runs alongside the first clock line for a distance. The integrated circuit includes a shield structure for shielding the clock line from at least one of crosstalk and other interference. The shield structure includes a shield wall extending from the first layer. The shield wall runs between the first and second clock lines for at least a portion of the distance. The shield structure may also include a shield cage extending from the first layer and surrounding the first and second clock lines for at least a portion of the distance. The shield cage has a plurality of openings. At least one of the shield cage and shield wall may be connected to the ground of an AC power supply.