Abstract:
PROBLEM TO BE SOLVED: To speedily eliminate copper and to minimize the loss of copper in a patterned interconnected body without eliminating a metal layer and a dielectric layer at a lower side or corroding copper. SOLUTION: The chemical - mechanical polishing(CMP) slurry for polishing the layer of copper or that of the alloy of copper contains an etchant, an oxidation suppression agent, and an additive for adjusting the complexing between the copper and the oxidation suppression agent.
Abstract:
PROBLEM TO BE SOLVED: To obtain a CMP process which increases the removing speed of a liner for copper metallurgy composed of a metal having a high melting point, its alloy or compound, or both the metal and alloy or compound and, at the same time, can minimize the formation of recesses and erosion by removing the liner with slurry containing an oxidizing agent, a corrosion inhibitor, and a surface active agent. SOLUTION: The polishing speeds of a liner 20 and an insulator 10 are controlled so as to make the speeds faster than the polishing speed of copper 22. Namely, in order to make the condition for removing a Ta/TaN liner composed mainly of Ta from a semiconductor substrate which is passivated with silicon dioxide, the liner 20 is removed by CIVIP in acidic slurry containing an oxidizing agent, such as the hydrogen peroxide, a corrosion inhibitor, such as the demineralized water, BTA, etc., and a surface active agent, such as the Duponol SP, etc. Consequently, a CMP process which can increase the removing speed of the liner and, at the same time, can minimize the formation of recesses and erosion can be obtained.
Abstract:
PROBLEM TO BE SOLVED: To provide a low-k dielectric material with increased cohesive strength for use in electronic structures including interconnect and sensing structures. SOLUTION: The low-k dielectric material includes atoms of Si, C, O, and H in which a fraction of the C atoms are bonded as Si-CH 3 functional groups, and another fraction of the C atoms are bonded as Si-R-Si, wherein R is phenyl, -[CH 2 ] n -, (n is greater than or equal to 1), HC=CH, C=CH 2 , C≡C or a [S] n linkage, (n is as defined above). COPYRIGHT: (C)2006,JPO&NCIPI
Abstract translation:要解决的问题:提供具有增加的内聚强度的低k电介质材料,用于包括互连和感测结构的电子结构中。 解决方案:低k电介质材料包括Si,C,O和H的原子,其中C原子的一部分键合为Si-CH 3 S / S官能团,另一部分 的C原子键合为Si-R-Si,其中R是苯基, - (n大于或等于1) ,HC = CH,C = CH 2 SB>,C≡C或[S] n SB>键,(n如上所定义)。 版权所有(C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: TO provide a method for preparing an electrically connected copper pad having superior diffusing barrier characteristics and bonding characteristic. SOLUTION: The method for preparing an electrically connecting conductive pad comprises the steps of first preparing a copper pad surface 14 cleaned by an acid solution, than adhering a protective layer of a phosphorus or a boron-containing metal alloy to the surface of the pad, and then adhering an adhesive layer 18 of a noble metal onto the protective layer. In this case, a suitable thickness of the protective layer is in the range of 1,000 to about 10,000 Åor preferably about 3,000 to about 7,000 Å. The adhesive layer is formed of the noble metal, such as Au, Pt, Pd, Ag or the like and can be formed into a thickness of about 500 to about 4,000 Å or preferably about 1,000 to about 2,000 Å. Or before electrolessly adhering of the protective layer, a Pd nucleating layer may be adhered between the surface of the copper conductive pad and the protective layer.
Abstract:
PROBLEM TO BE SOLVED: To provide a conductive material having a conductive core region containing copper and an interface region, and to provide a manufacturing method of the conductive material. SOLUTION: The conductive material comprises a conductive core region containing copper, and one or more metal selected from iridium, osmium, and rhenium in terms of atomic percentage of 0.001 to 0.6, and an interface region. The interface region contains one or more metal in terms of at least 80 atomic percentage or more. In the interface region, a seed layer containing copper, and one or more metal selected from iridium, osmium, and rhenium is formed, and a conductive layer composed of copper is formed thereon. Then, by polishing the conductive layer, a surface material of a polished copper is constituted. Thus, the conductive material is formed by annealing the polished surface material of copper at a sufficient temperature for causing migration of one or more metals from the seed layer to the polished surface. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor device of high strength that lowers an effective dielectric constant k eff , maintains an inter-level vertical capacity in an interconnection at a low level and a manufacturing method of the same. SOLUTION: The method of manufacturing the device comprises a step for providing a structure having an insulating layer 120 of at least one interconnection 130 and a step for forming a sublithographic template mask 150 on the insulating layer. A sublithographic feature 135a is formed in the vicinity of at least one intereconnection by performing etching on the insulating layer through the sublithographic template mask using a selective etching step. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
A method for far back end of line (FBEOL) semiconductor device formation includes forming a terminal copper pad (104) in an upper level of a semiconductor wafer (106), forming an insulating stack (114) over the terminal copper pad, and patterning and opening a terminal via (116) within a portion of the insulating stack so as to leave a bottom cap layer of the insulating stack protecting the terminal copper pad. An organic passivation layer (126) is formed and patterned over the top of the insulating stack, and the bottom cap layer (118) over the terminal copper pad is removed. A ball limiting metallurgy (BLM) stack (128) is deposited over the organic passivation layer and terminal copper pad, and a solder ball connection (108) is formed on a patterned portion of the BLM stack.