摘要:
Inter-layer electrical shorting between layers of conductors of an integrated circuit caused by "hillocks" in the bottom layer is prevented by the use of a double layer photoresist coatings atop the insulating layer that separates the metal layers. The double layer photoresist insures that irregularities in the dielectric layer caused by hillocks in the underlying insulating layer do not cause a break in the photoresist and a subsequent undesired etching of a spurious "via" through the dielectric layer.
摘要:
A parking brake mechanism for an air-actuated disc brake includes an electrically powered actuator, an extensible device drivably connected to the electrically powered actuator and able to extend and retract and be held in place in an extended position to thereby apply a brake, and a resilient device arranged to act on the extensible device and maintain a desired level of force to be applied by the parking brake mechanism in the event of contraction of brake components due to cooling.