| WIN Semiconductors Corp. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110059610 | Method of using an electroless plating for depositing a metal seed layer for the subsequent plated backside metal film - A method of backside metal process for semiconductor electronic devices, particularly of using an electroless plating for depositing a metal seed layer for the plated backside metal film. The backside of a semiconductor wafer, with electronic devices already fabricated on the front side, is first coated with a thin metal seed layer by electroless plating. Then, the backside metal layer, such as a gold layer or a copper layer, is coated on the metal seed layer. The metal seed layer not only increases the adhesion between the front side metal layer and the backside metal layer through backside via holes, but also prevents metal peeling after subsequent fabrication processes. This is helpful for increasing the reliability of device performances. Suitable materials for the metal seed layer includes Pd, Au, Ni, Ag, Co, Cr, Cu, Pt, or their alloys, such as NiP, NiB, AuSn, Pt—Rh and the likes. | 03-10-2011 |
| 20100171179 | FULL PERIPHERY MULTI-GATE TRANSISTOR WITH OHMIC STRIP - A full periphery multi-gate transistor with ohmic strip is disclosed. The multi-gate transistor comprises a substrate, a multi-layer structure, a source finger, a drain finger, and a gate. The gate is formed between the source finger and the drain finger, and then a conduction channel is formed between the source finger and the drain finger. The gate also meanderingly wraps around an end of the source finger and an end of the drain finger. Therefore, the end of the source finger and the end of the drain finger are parts of the conduction channel and both provide channel conductance. In addition, an ohmic strip is formed between two gate lines of the gate. | 07-08-2010 |
| 20100035405 | Method for mounting a thinned semiconductor wafer on a carrier substrate - A method for mounting a thinned semiconductor wafer on a carrier substrate for further processing is disclosed. The method consists of a series of steps, which is based on providing a frame with a double-side tape to mount the thinned wafer on the carrier substrate. The frame is used to support the double-side tape and can be designed to fit the conventional production line for holding, picking and transferring wafers. The carrier substrate can be a sapphire substrate, a quartz substrate or other substrates that can sustain further processing, such as thermal treatments and/or chemical etchings. The method of the present invention not only prevents possible damages to the highly brittle chip after wafer thinning, but also fits the conventional production line for processing semiconductor wafers. | 02-11-2010 |
| 20090278171 | High linearity doped-channel FET - A high linearity doped-channel FET, comprises a substrate, a buffer layer, a channel layer and a cap layer stacked downwardly thereon. The cap layer has a source region, a drain region with a distance apart from the source region and a gate region formed by removing part of the cap layer between the source region and the drain region. A source electrode and a drain electrode are respectively formed on the source region and the drain region, and a gate electrode is formed on the gate region, wherein the source region and the drain region of the cap layer are respectively provided with an opening for forming a good ohmic contact between the source region and the drain region with the channel layer respectively. | 11-12-2009 |
| 20080220599 | Method of fabricating short-gate-length electrodes for integrated III-V compound semiconductor devices - A method of fabricating short-gate-length electrodes for integrated III-V compound semiconductor devices, particularly for integrated HBT/HEMT devices on a common substrate is disclosed. The method is based on dual-resist processes, wherein a first thin photo-resist layer is utilized for defining the gate dimension, while a second thicker photo-resist layer is used to obtain a better coverage on the surface for facilitating gate metal lift-off. The dual-resist method not only reduces the final gate length, but also mitigates the gate recess undercuts, as compared with those fabricated by the conventional single-resist processes. Furthermore, the dual-resist method of the present invention is also beneficial for the fabrication of multi-gate device with good gate-length uniformity. | 09-11-2008 |
