摘要:
An improvement in the method of fabricating on chip decoupling capacitors which help prevent L di/dt voltage droop on the power grid for high surge current conditions is disclosed. The inclusion of a hybrid metal/metal nitride top electrode/barrier provides for a low cost and higher performance option to strapping decoupling capacitors.
摘要:
On-chip decoupling capacitor structures, and methods of fabricating such decoupling capacitors are disclosed. On-chip decoupling capacitors help to reduce or prevent L di/dt voltage droop on the power grid for high surge current conditions. The inclusion of one or more decoupling capacitors on a chip, in close proximity to the power grid conductors reduces parasitic inductance and thereby provides improved decoupling performance with respect to high frequency noise. In one embodiment of the present invention, a capacitor stack structure is inserted between metal interconnect layers. Such a capacitor stack may consist of a bottom electrode/barrier; a thin dielectric material having a high dielectric constant; and a top electrode/barrier. In an alternative embodiment, the bottom electrode and/or bottom metal interconnect layer have three dimensional texture to increase the surface area of the capacitor. An illustrative method embodying the present invention, includes fabricating the on-chip decoupling capacitor stack structure and electrically connecting the capacitor to provide efficient capacitive de-coupling. In order to facilitate the removal of photoresist by an oxygen plasma process prior to exposing copper conductors during the capacitor stack etch, an Al hardmask can be used to protect the capacitor formed with Ta2O5 dielectric, or a W hardmask can be used to protect the capacitor formed with BST dielectric.
摘要翻译:公开了片上去耦电容器结构以及制造这种去耦电容器的方法。 片内去耦电容有助于在高浪涌电流条件下降低或防止电网上的L di / dt电压下降。 将一个或多个去耦电容器包含在靠近电力电网导体的芯片上减小了寄生电感,从而提供了相对于高频噪声的改进的去耦性能。 在本发明的一个实施例中,在金属互连层之间插入电容器堆叠结构。 这样的电容器堆叠可以由底部电极/屏障组成; 具有高介电常数的薄介电材料; 和顶部电极/屏障。 在替代实施例中,底部电极和/或底部金属互连层具有三维结构以增加电容器的表面积。 体现本发明的说明性方法包括制造片上去耦电容器堆叠结构并电连接电容器以提供有效的电容去耦合。 为了在电容器堆叠蚀刻期间在铜导体暴露之前通过氧等离子体工艺促进光致抗蚀剂的去除,可以使用Al硬掩模来保护由Ta 2 O 5形成的电容器 SUB>电介质或W硬掩模可用于保护由BST电介质形成的电容器。
摘要:
An apparatus including a capacitor formed between metallization layers on a circuit, the capacitor including a bottom electrode coupled to a metal layer and a top electrode coupled to a metal via wherein the capacitor has a corrugated sidewall profile. A method including forming an interlayer dielectric including alternating layers of dissimilar dielectric materials in a multilayer stack over a metal layer of a device structure; forming a via having a corrugated sidewall; and forming a decoupling capacitor stack in the via that conforms to the sidewall of the via.
摘要:
A semiconductor based structure containing substantially smoothed waveguides having a rounded surface is disclosed, as well as methods of fabricating such a structure. The substantially smoothed waveguides may be formed of waveguide materials such as amorphous silicon or stoichiometric silicon nitride. The substantially smoothed waveguides are formed with an isotropic wet etch combined with sonic energy.
摘要:
The apparatus introduces a second adjustable resonant point in a QMS at a frequency that is close to a multiple of the fundamental frequency by adjusting driving point impedance characteristics of the QMS. The apparatus measures the first and second resonant point of the QMS to account for changes in the operational characteristics of the QMS.
摘要:
A semiconductor device is described with a photodetector embedded within and a method of manufacturing the same. The photodetector may be formed above the conductive layers within the device and may detect transmitted light from the top side of the device. The process of manufacturing the device may include a damascene or a subtractive etch process.
摘要:
A method of protecting a sensitive layer from harsh chemistries. The method includes forming a first sensitive layer, forming a second layer upon the first layer, then forming a third layer over the second layer. The third layer is utilized as a mask during patterning of the second layer. During patterning, however, the second layer is only partially etched, thus leaving a buffer layer overlying the first layer. The third layer is completely removed while the buffer layer protects the first layer from the harsh chemicals that are utilized to remove the third layer. Then, the buffer layer is carefully removed down to the surface of the first layer.
摘要:
Optical waveguide devices having adjustable waveguide cladding wherein the waveguide cladding is adjustable by using an external control or stimulus to change an optical characteristic of the waveguide cladding, e.g., the refractive index of the cladding. Such waveguide devices may be designed to have certain features that are suitable for monolithically integrated opto-electronic devices and systems.
摘要:
A photosensitive device for enabling high speed detection of electromagnetic radiation. The device includes recessed electrodes for providing a generally homogeneous electric field in an active region. Carriers generated in the active region are detected using the recessed electrodes.