Abstract:
A method is provided. A library associated with a cell is received. A minimum setup time of the cell is acquired in response to an ideal hold time according to the library and a reference clock. A maximum hold time of the cell is acquired in response to the minimum setup time according to the library and the reference clock. A plurality of candidate hold times are determined. A plurality of candidate setup times are acquired corresponding to the plurality of candidate hold times according to the library and the reference clock. The plurality of candidate setup times are added to the plurality of candidate hold times, respectively, to obtain a plurality of candidate time windows. A target time window is selected that has a minimal time span among the candidate time windows.
Abstract:
An embodiment of a method of lithography includes generating a beam of electrons. A first pixel and a second pixel are each configured to pattern the beam. Using time domain multiplex loading, the first and second pixels are controlled such that the beam is patterned. The patterning includes receiving a first clock signal and using the first clock signal to generate a second clock signal and a third clock signal. The second clock signal is sent to the first pixel and sending the third clock signal is sent to the second pixel.
Abstract:
A method of making a semiconductor device includes forming an under bump metallurgy (UBM) layer over a substrate, the UBM layer comprising sidewalls and a surface region. The method further includes forming a conductive pillar over the UBM layer, the conductive pillar includes sidewalls, wherein the conductive pillar exposes the surface region of the UBM layer. The method further includes forming a non-metal protective structure over the sidewalls of the conductive pillar, wherein the non-metal protective structure contacts the surface region of the UBM layer, and the non-metal protective structure exposes the sidewalls of the UBM layer.
Abstract:
A fine pitch package-on-package (PoP), and a method of forming, are provided. The PoP may be formed by placing connections, e.g., solder balls, on a first substrate having a semiconductor die attached thereto. A first reflow process is performed to elongate the solder balls. Thereafter, a second substrate having another semiconductor die attached thereto is connected to the solder balls. A second reflow process is performed to form an hourglass connection.
Abstract:
A memory includes a word line, a bit line and a complementary bit line. A memory cell has a data node coupled to the bit line and a complementary data node coupled to the complementary bit line. The word line controls access to the memory cell. A circuit is coupled to the bit line and the complementary bit line. The circuit is configured to pull up to a high voltage, pull down to a low voltage, or float the bit line and the complementary bit line based on a first timing of pre-charging and a second timing of write driving. The first timing and the second timing are synchronized.
Abstract:
Apparatus and methods for providing solder pillar bumps. Pillar bump connections are formed on input/output terminals for integrated circuits by forming a pillar of conductive material using plating of a conductive material over terminals of an integrated circuit. A base portion of the pillar bump has a greater width than an upper portion. A cross-section of the base portion of the pillar bump may make a trapezoidal, rectangular, or sloping shape. Solder material may be formed on the top surface of the pillar. The resulting solder pillar bumps form fine pitch package solder connections that are more reliable than those of the prior art.
Abstract:
A system includes an integrated circuit (IC) design data base having a feature, a source configured to generate a radiation beam, a pattern generator (PG) including a mirror array plate and an electrode plate disposed over the mirror array plate, wherein the electrode plate includes a lens let having a first dimension and a second dimension perpendicular to the first dimension with the first dimension larger than the second dimension so that the lens let modifies the radiation beam to form the long shaped radiation beam, and a stage configured secured the substrate. The system further includes an electric field generator connecting the minor array plate. The mirror array plate includes a mirror. The mirror absorbs or reflects the radiation beam. The radiation beam includes electron beam or ion beam. The second dimension is equal to a minimum dimension of the feature.
Abstract:
An integrated circuit device is disclosed. An exemplary integrated circuit device includes a first copper layer, a second copper layer, and an interface between the first and second copper layers. The interface includes a flat zone interface region and an intergrowth interface region, wherein the flat zone interface region is less than or equal to 50% of the interface.