Chapter 2 . Design and development of the Dimple Array interconnect
نویسندگان
چکیده
US Patent 6,284,563 (Joseph Fjelstad) describes a method of making compliant microelectronic assemblies. This technique introduces a compliant layer (140) with a number of concave areas on top of a microelectronic element. Conductive flexible bond ribbons (175) are plated in these concave areas and extend to the periphery of the device. Electrical contacts can be formed with precision by placing solder balls within these areas that are then reflowed to attach the package to a substrate. The function of the concave dimples is to form the interconnection and to precisely retain the solder balls in the cuplike areas.
منابع مشابه
An Experimental Study of Heat Transfer Enhancement in the Circular Channel with Almond Shape Dimples
Heat transfer coefficients were measured in a circular tube with dimpled surface. The almond type dimples were fabricated, the tube diameter (D) 19mm and dimple depth 3 mm ratio was kept constant, while holding diameter 10mm of dimple is required length 21.5mm because of the elongated shape. The Reynolds number based on the channel hydraulic diameter was varied from 25000to 95000. An experiment...
متن کاملDevelopment a New Technique Based on Least Square Method to Synthesize the Pattern of Equally Space Linear Arrays
Using the sampled data of a desired pattern is a common technique in pattern synthesizing of array factor (AF) of antenna arrays. Based on the obtained data matrix, Least Square Method (LSM) is used to calculate the exciting coefficient of array elements. The most important parameter, which involves the accuracy and complexity of calculation, is the sampling rate of the desired pattern. Classic...
متن کاملNovel Cad Techniques for New Challenges in Deep Sub - Micron Vlsi Design
CMOS technology has continuously scaled into deep sub-micron regime. With CMOS scaling, many complex design issues arise. The challenges include, but not limited to, the increasing of interconnect delay and power, exponential growth of leakage power, and rapid growth of design complexity. These challenges motivate us to design new CAD algorithms to reduce power consumption (both leakage power a...
متن کاملA New Design of Log-Periodic Dipole Array (LPDA) Antenna
This paper presents a new approach for design of the log-periodic dipole array antenna (LPDA) based on using of different design parameters in the LPDA elements to control the antenna behavior. In the proposed procedure, the design parameters can control the value of forward gain over the operating frequency range, and also adjust the gain flatness. Furthermore, this design procedure can decrea...
متن کاملDesign and Fabrication of Plasma Array Antenna with Beam Forming
In this paper, the design and implementation of plasma antenna array with beam forming is discussed. The structure consists of a circular array of plasma tube enclosed in a unipolar UHF band monopole antenna. Beam forming is possible by stimulated plasma tubes. The combination of the above antenna with plasma excitation controller makes a beam forming smart antenna. An experimental model in UHF...
متن کامل