摘要:
Structures for reducing relative stress between HDP layer and passivation layer are proposed by the invention, where the HDP layer is formed by high density plasma and the passivation layer is a conventional passivation layer. The invention provides some structures that can be divided into two categories: one, a low stress passivation layer is directly formed on a HDP layer; another, a low stress layer is formed between passivation layer and HDP layer to reduce relative layer that between any two adjacent layers. Therefore, it is crystal-clear that possible structures of the invention comprise following varieties: First, a low stress passivation layer is located between a passivation layer and a HDP layer. Second, a lower stress passivation layer directly locates on a HDP layer. Third, a low stress layer is formed between a passivation layer and a HDP layer.
摘要:
A process for fabricating contact plugs for semiconductor IC devices. An insulating layer is formed over the surface of an IC substrate. The insulating layer is then patterned for forming contact vias revealing the surface of an electrically conductive region of the IC circuitry that requires electrical connections by the contact plugs. A glue (adhesive) layer is then formed over the sidewall surface inside the contact vias. The glue (adhesive) layer is densified by either a rapid thermal annealing or a plasma treatment in order to prevent the formation of voids when the plugs are formed. The internal space of the contact vias are then filled with an electrically conductive material to form the contact plugs. The surface of the device substrate is then polished to remove the electrically conductive material and glue layer covering the surface of the insulating layer until the insulating layer surface is exposed, and top surface of the formed contact plug is planarized flat with the surface of the insulating layer.
摘要:
A method for preventing the occurrence of poisoned trenches and vias in a dual damascene process that includes performing a densification process, such as an electron-beam process, on the surface of the exposed dielectric layer around the openings before the openings are filled with conductive material. The densified surface of the dielectric layer is able to efficiently prevent the occurrence of poisoned trenches and vias caused by the outgassing phenomena.
摘要:
A method of forming a conductive plug is disclosed. A device with a conductive region is formed on a semiconductor substrate. An insulating layer is formed on the semiconductor substrate. The insulating layer is etched to form a contact window which exposes the conductive region of the device. A diffusion barrier layer is formed on the exposed conductive region and the periphery of the contact window. A hydrogen plasma treatment is performed in a reaction chamber; and a conductive material is filled in the contact window, to form the conductive plug.
摘要:
An apparatus for detecting the position of a collimator in a sputter-processing chamber is disclosed in the present invention. A target holder is at the upper portion of the chamber and a target is attached to the bottom surface of the target holder. A substrate holder is at the underlying portion of the chamber and it is opposed to the target holder. A silicon wafer is putted on the substrate holder. Two supporters are on an inner surface of the housing of the chamber and are separated to oppose to each other, the supporters protrude the housing. A collimator is putted on the supporters and it is parallel to the surface of the target. Two sensors is attached on the under surface or the lateral surface of the supporters. The horizontal height of the sensors is lower than that of the collimator. When the collimator is heated and it distorts, the position of the collimator will change to enter into the available area of the sensors. Afterwards, an alarm will announce a notice to supervisors of the sputtering system.
摘要:
A method of preventing overpolishing in a chemical-mechanical polishing operation includes using a spin-on polymer material instead of spin-on glass as the local planarization material. The spin-on polymer layer is further used as a polishing stop layer so as to prevent damage to components due to overpolishing, because the polishing rate of the spin-on polymer layer in a chemical-mechanical polishing operation is, in general, lower than the polishing rate of the silicon dioxide layer formed using plasma enhanced chemical vapor deposition.
摘要:
A method of fabricating a trench isolation structure in a semiconductor devices. First, a mask layer is formed on a substrate and patterned. Then, a trench is formed in the substrate using the mask layer as a mask. An insulating layer is formed under the mask layer to fill the trench. The insulating layer is polished to expose a portion of the mask layer and an insulating plug is left in the trench. A RTP is performed to avoid mobile ions diffuse into the substrate. There are several operating conditions for the RTP. For example the operating temperature is ranged from about 600.degree. C. to about 1300.degree. C. The duration for performing the RTP is ranged from about 5 seconds to about 5 minutes. The operating gas can be selected from one of a group of N.sub.2, O.sub.2, or N.sub.2 O. Besides, before the RTP a cleaning step is performed using SC-1 or hydrogen fluoride (HF) solution as cleaning solution.
摘要:
A method for forming a barrier layer inside a contact in a semiconductor wafer is disclosed herein. The forgoing semiconductor wafer includes a dielectric layer on a silicon contained layer. A portion of the silicon contained layer is exposed by the contact. The method mentioned above includes the following steps.First, form a conductive layer on the topography of the semiconductor wafer by a method other than CVD to increase the ohmic contact to the exposed silicon contained layer. Thus a first portion of the conductive layer is formed on the dielectric layer, and a second portion of the conductive layer is formed on the exposed silicon contained layer. Next, remove the first portion of the conductive layer to expose the dielectric layer. Finally, use a chemical vapor deposition (CVD) method to form the barrier layer on the dielectric layer and the first portion of the conductive layer to prevent said silicon contained layer from exposure.
摘要:
A method for treating via sidewalls comprising the steps of providing a substrate having a number of metallic wires already formed; depositing a liner oxide layer; depositing an organic spin-on-glass layer; and depositing a second oxide layer. The second oxide layer is planarized by a chemical-mechanical polishing method. Photolithographic and etching methods, employing oxygen plasma treatment as well as a wet etching removal method are used to form vias above the metallic layers. A hydrogen plasma treatment is performed for the via sidewalls to prevent the occurrence of out-gassing and to obtain superior electrical properties. A titanium/titanium nitride film is deposited, and aluminium or tungsten is deposited into the vias and to form aluminium or tungsten plugs, thus completing the manufacturing process according to this invention. A semiconductor device formned by this method is also described.
摘要:
A method for effectively cleaning the slurry remnants left on a polishing pad after the completion of a chemical mechanical polish (CMP) process is provided. This method is able to substantially thoroughly clean away all of the slurry remnants left on the polishing pad. In the method of the invention, the first step is to prepare a cleaning agent which is a mixture of H.sub.2 O.sub.2, deionized water, an acid solution, and an alkaline solution mixed to a predetermined ratio. The cleaning agent is subsequently directed to a nozzle formed in the pad dresser. This allows the cleaning agent to be jetted forcibly onto the slurry remnants on the polishing pad so as to clean the slurry remnants away from the polishing pad. The cleaning agent can be provided with predetermined ratios for various kinds of slurries so that the cleaning agent can be adjusted to be either acid or alkaline in nature. This can allow an increase in the repellent force between the particles of the slurry remnants and the underlying polishing pad that is caused by the so-called zeta potential, thus allowing the slurry remnants to be more easily removed from the polishing pad.
摘要翻译:提供了在完成化学机械抛光(CMP)工艺之后有效地清洁留在抛光垫上的浆料残余物的方法。 该方法能够基本上彻底地清除留在抛光垫上的所有浆料残余物。 在本发明的方法中,第一步是制备一种清洗剂,它是以预定比例混合的H 2 O 2,去离子水,酸性溶液和碱性溶液的混合物。 随后将清洁剂引导到形成在修整器中的喷嘴。 这样可以将洗涤剂强制地喷射到抛光垫上的浆料残余物上,以清除离开抛光垫的浆料残余物。 可以为各种浆料提供预定比例的清洗剂,使清洗剂本质上可以调节为酸性或碱性。 这可以增加由所谓的ζ电位引起的浆料残留物的颗粒和下面的抛光垫之间的驱除力,从而使浆料残余物更容易从抛光垫上去除。