摘要:
Provided is a polishing liquid including cerium oxide particles, an organic acid A, a polymer compound B having a carboxyl acid group or a carboxylate group, and water, wherein the organic acid A has at least one group selected from the group consisting of —COOM group, -Ph-OM group, —SO3M group and —PO3M2 group, pKa of the organic acid A is less than 9, a content of the organic acid A is 0.001 to 1 mass % with respect to the total mass of the polishing liquid, and a content of the polymer compound B is 0.01 to 0.50 mass % with respect to the total mass of the polishing liquid, and pH is in the range of 4.0 to 7.0.
摘要翻译:本发明提供一种包括氧化铈颗粒,有机酸A,具有羧酸基或羧酸酯基的高分子化合物B和水的抛光液,其中有机酸A具有至少一个选自-COOM 基团-Ph-OM基团,-SO 3 M基团和-PO 3 M 2基团,有机酸A的pKa小于9,有机酸A的含量相对于研磨液的总质量为0.001〜1质量% ,相对于研磨液的总质量,高分子化合物B的含量为0.01〜0.50质量%,pH为4.0〜7.0。
摘要:
Provided is a polishing liquid including cerium oxide particles, an organic acid A, a polymer compound B having a carboxyl acid group or a carboxylate group, and water, wherein the organic acid A has at least one group selected from the group consisting of —COOM group, -Ph-OM group, —SO3M group and —PO3M2 group, pKa of the organic acid A is less than 9, a content of the organic acid A is 0.001 to 1 mass % with respect to the total mass of the polishing liquid, and a content of the polymer compound B is 0.01 to 0.50 mass % with respect to the total mass of the polishing liquid, and pH is in the range of 4.0 to 7.0.
摘要翻译:本发明提供一种包括氧化铈颗粒,有机酸A,具有羧酸基或羧酸酯基的高分子化合物B和水的抛光液,其中有机酸A具有至少一个选自-COOM 基团-Ph-OM基团,-SO 3 M基团和-PO 3 M 2基团,有机酸A的pKa小于9,有机酸A的含量相对于研磨液的总质量为0.001〜1质量% ,相对于研磨液的总质量,高分子化合物B的含量为0.01〜0.50质量%,pH为4.0〜7.0。
摘要:
The present invention can provide a polishing liquid for CMP having good dispersion stability and a high polishing rate in polishing of interlayer insulating films and a polishing method. Disclosed a polishing liquid for CMP comprising: a medium; and colloidal silica particles dispersed in the medium, a blending amount of the colloidal silica particles being 2.0 to 8.0% by mass relative to 100% by mass of the polishing liquid, wherein the colloidal silica particles satisfy the following conditions (1) to (3): (1) a two-axis average primary particle diameter (R1) obtained from images of twenty arbitrarily selected colloidal silica particles observed by a scanning electron microscope is within the range of 35 to 55 nm; (2) a value S1/S0 obtained by dividing a specific surface area (S1) of a colloidal silica particle measured by BET method by a calculated specific surface area (S0) of a true sphere having the same particle diameter as the two-axis average primary particle diameter (R1) determined by (1) above is 1.20 or less; and (3) a ratio, association degree: RS/R1, of a secondary particle diameter (RS) of the colloidal silica particles measured with a dynamic light scattering particle size distribution analyzer and the two-axis average primary particle diameter (R1) determined by (1) above in the polishing liquid for CMP is 1.30 or less.
摘要:
Provided are a polishing slurry for metal films and a polishing method which restrain the generation of erosion and seams, and makes the flatness of a surface polished therewith or thereby high. The slurry and the method are a polishing slurry, for metal films, comprising abrasive grains, a methacrylic acid based polymer and water, and a polishing method using the slurry, respectively.
摘要:
Provided are a polishing slurry for metal films and a polishing method which restrain the generation of erosion and seams, and makes the flatness of a surface polished therewith or thereby high. The slurry and the method are a polishing slurry, for metal films, comprising abrasive grains, a methacrylic acid based polymer and water, and a polishing method using the slurry, respectively.
摘要:
The invention relates to a polishing slurry for CMP containing abrasive and a fang and seam restrainer, wherein the fang and seam restrainer is at least one selected from polycarboxylic acids, polycarboxylic acid derivatives, or carboxylic-acid-containing copolymers. According to this, provided is a polishing slurry for CMP which restrains a fang phenomenon or a seam phenomenon that an insulated film near wiring regions is excessively polished, thereby giving a high flatness to a polished face.
摘要:
A CMP polishing liquid being capable of using in a chemical mechanical polishing comprising of: a first chemical mechanical polishing step of polishing a conductive substance layer of a substrate having an interlayer insulation film containing convex and concave regions on a surface thereof, a barrier layer coating along the surface of the interlayer insulation film, and the conductive substance layer coating the barrier layer while filling the concave regions, and thus exposing the barrier layer in the convex regions; and a second chemical mechanical polishing step of exposing the interlayer insulation film in the convex regions by polishing the barrier layer exposed in the first chemical mechanical polishing step; characterized in that a difference (B)−(A) is 650 {acute over (Å)} or less, wherein the (A) is a polishing amount of the interlayer insulation film in a field area when the interlayer insulation film in the field area having a width of 1,000 μm or more of the interlayer insulation film region formed on the substrate is polished to a depth of 400 {acute over (Å)} or more; and the (B) is a polishing amount of the interlayer insulation film in a stripe-shaped patterned area having a total width of 1,000 μm or more wherein a wiring metal region having a width of 90 μm and the interlayer insulation film region having a width of 10 μm are aligned alternately on the substrate when the interlayer insulation film in the field area having the width of 1,000 μm or more of the interlayer insulation film region formed on the substrate is polished to a depth of 400 {acute over (Å)} or more.
摘要:
A starter driving semiconductor switch apparatus energizes and de-energizes a starter according to a command from an outside. A series circuit to which semiconductor switches are connected in series is provided between a battery serving as a power supply and the starter. The starter is energized by bringing all the semiconductor switches into conduction. A voltage or a current at a predetermined point in the series circuit is monitored to make a self-diagnosis on whether the starter is allowed to start and whether there is a failure in the semiconductor switches according to a monitor output. The starter driving semiconductor switch apparatus is thus expected to have a longer useful life by energizing the starter not by using mechanical contacts but by using semiconductor switches.
摘要:
Provided are an illumination optical system allowing light beams to be condensed and enter an illumination area at different angles from each other, color separating elements that separate colors of the light beams from the illumination optical systems, liquid crystal light valves that modulate the color lights to form image light for the right and the left eyes, a color combining element that combines the color light beams, a wavelength-selective polarization rotating element that rotates the polarization direction of a predetermined color light so as to align the polarization direction with that of a light beam of another color, and a projection lens that magnifies and projects images. The liquid crystal light valves are provided with an incident side microlens array that causes the light beams for the right and the left eyes to pass respectively through the right and the left eye image pixels, and an exit side microlens array that condenses the light that has passed through the pixels. The projection lens is provided with a polarized light separating element that causes the polarization directions of image light for the right and the left eyes to be orthogonal to each other. Using one projection-type display apparatus, a highly efficient stereoscopic image can be displayed with little flicker and cross talk of image light for the right eye and for the left eye.
摘要:
Stereoscopic vision glasses include a right-eye shutter and a left-eye shutter axisymmetric to each other with respect to a symmetric axis. Each of the right-eye shutter and the left-eye shutter includes an incident side polarization plate, an exit side polarization plate, and liquid crystal interposed therebetween. Each of the right-eye shutter and the left-eye shutter is opened or closed in accordance with an application voltage of the liquid crystal. The polarization axis of the incident side polarization plate of each of the right-eye shutter and the left-eye shutter is inclined with respect to the symmetric axis. A stereoscopic vision electronic apparatus includes a projection type display device displaying a right-eye image and a left-eye image in a time division manner by projecting first projected light and second projected light of which directions of polarization axes are different from each other; and the stereoscopic vision glasses.