H01B1/22

ACRYLIC CONDUCTIVE PASTE FOR SEMICONDUCTOR DEVICE AND METHODS
20220351876 · 2022-11-03 ·

An acrylic conductive paste is provided, based on 100 parts by weight, including: 30-84 parts of conductive particles, 15˜45 parts of acrylate, 0.5˜2.5 parts of adhesion promoter, 0.5˜3 parts of initiator. The conductive particles include three-dimensional dendritic conductive particles; and the adhesion promoter is a mixture of a silane coupling agent and a phosphate ester. The conductive paste of the present disclosure has good electrical conductivity, short curing time, strong adhesion, and can be used for a long-time room temperature operation. The present disclosure also provides a method for preparing the above-mentioned acrylic conductive paste, which is convenient for operation and industrial application; at the same time, it shows that the acrylic conductive paste of the present disclosure can be applied to semiconductor components for packaging a semiconductor device.

ACRYLIC CONDUCTIVE PASTE FOR SEMICONDUCTOR DEVICE AND METHODS
20220351876 · 2022-11-03 ·

An acrylic conductive paste is provided, based on 100 parts by weight, including: 30-84 parts of conductive particles, 15˜45 parts of acrylate, 0.5˜2.5 parts of adhesion promoter, 0.5˜3 parts of initiator. The conductive particles include three-dimensional dendritic conductive particles; and the adhesion promoter is a mixture of a silane coupling agent and a phosphate ester. The conductive paste of the present disclosure has good electrical conductivity, short curing time, strong adhesion, and can be used for a long-time room temperature operation. The present disclosure also provides a method for preparing the above-mentioned acrylic conductive paste, which is convenient for operation and industrial application; at the same time, it shows that the acrylic conductive paste of the present disclosure can be applied to semiconductor components for packaging a semiconductor device.

SOLVENTS AND SLURRIES COMPRISING A POLY(CARBOXYLIC ACID) BINDER FOR SILICON ELECTRODE MANUFACTURE

An silicon-containing electrode is formed by coating a silicon-containing slurry onto a conductive current collector. The slurry comprises a binder solution comprising a poly(carboxylic acid) binder dissolved in a mixed solvent system comprising an amide solvent of Formula I, as described herein, and a second solvent which can be water and/or an organic solvent. The binder preferably comprises poly(acrylic acid). The mixed solvent system comprises about 10 to about 99 vol % of the amide solvent of Formula I. The binder solution is utilized as a solvent for a slurry of silicon-containing particles for preparing the silicon-containing electrode. The slurries comprising the mixed solvent system have higher viscosity and are more stable than slurries containing the same concentrations of silicon particles, carbon particles, and binder in water as the sole solvent.

SOLVENTS AND SLURRIES COMPRISING A POLY(CARBOXYLIC ACID) BINDER FOR SILICON ELECTRODE MANUFACTURE

An silicon-containing electrode is formed by coating a silicon-containing slurry onto a conductive current collector. The slurry comprises a binder solution comprising a poly(carboxylic acid) binder dissolved in a mixed solvent system comprising an amide solvent of Formula I, as described herein, and a second solvent which can be water and/or an organic solvent. The binder preferably comprises poly(acrylic acid). The mixed solvent system comprises about 10 to about 99 vol % of the amide solvent of Formula I. The binder solution is utilized as a solvent for a slurry of silicon-containing particles for preparing the silicon-containing electrode. The slurries comprising the mixed solvent system have higher viscosity and are more stable than slurries containing the same concentrations of silicon particles, carbon particles, and binder in water as the sole solvent.

RADIAL SHAFT SEALING RING

A radial shaft sealing ring is designed to electrically conductively connect a shaft to a component which is stationary relative to the shaft. The radial shaft sealing ring has a supporting body and a sealing element attached thereto having a sealing portion which makes contact with the shaft. The material composition of the sealing element and/or a protective lip comprises at least one base material made from at least one polymer and one or more fillers, with at least one electrically conductive filler being provided.

RADIAL SHAFT SEALING RING

A radial shaft sealing ring is designed to electrically conductively connect a shaft to a component which is stationary relative to the shaft. The radial shaft sealing ring has a supporting body and a sealing element attached thereto having a sealing portion which makes contact with the shaft. The material composition of the sealing element and/or a protective lip comprises at least one base material made from at least one polymer and one or more fillers, with at least one electrically conductive filler being provided.

ELECTROCONDUCTIVE PASTE

The present invention provides a conductive paste which leaves less fine undissolved matter when dissolved in an organic solvent and thus can be easily filtrated, which has excellent printability, and which can exhibit excellent surface smoothness after printing. Provided is a conductive paste used for forming an electrode of a multilayer ceramic capacitor, the conductive paste containing: a polyvinyl acetal resin; an organic solvent; and a conductive powder, the polyvinyl acetal resin having a wave number A (cm.sup.−1) of a peak within a range of 3,100 to 3,700 cm.sup.−1 in an IR absorption spectrum measured using an infrared spectrophotometer; and a hydroxy group content (mol %), the wavenumber A of the peak and the hydroxy group content satisfying relations of the following formulas (1) and (2):


[(3,470−A)/Hydroxy group content]≤5.0  (1)


(3,470−A)≤150  (2)

wherein A is a wavenumber which is lower than 3,470 cm.sup.−1 and at which a transmittance a (%) satisfying [100−(100−X)/2] is exhibited, where X (%) is s minimum transmittance of the peak within the wavenumber range of 3,100 to 3,700 cm.sup.−1.

ELECTROCONDUCTIVE PASTE

The present invention provides a conductive paste which leaves less fine undissolved matter when dissolved in an organic solvent and thus can be easily filtrated, which has excellent printability, and which can exhibit excellent surface smoothness after printing. Provided is a conductive paste used for forming an electrode of a multilayer ceramic capacitor, the conductive paste containing: a polyvinyl acetal resin; an organic solvent; and a conductive powder, the polyvinyl acetal resin having a wave number A (cm.sup.−1) of a peak within a range of 3,100 to 3,700 cm.sup.−1 in an IR absorption spectrum measured using an infrared spectrophotometer; and a hydroxy group content (mol %), the wavenumber A of the peak and the hydroxy group content satisfying relations of the following formulas (1) and (2):


[(3,470−A)/Hydroxy group content]≤5.0  (1)


(3,470−A)≤150  (2)

wherein A is a wavenumber which is lower than 3,470 cm.sup.−1 and at which a transmittance a (%) satisfying [100−(100−X)/2] is exhibited, where X (%) is s minimum transmittance of the peak within the wavenumber range of 3,100 to 3,700 cm.sup.−1.

METHOD FOR PRODUCING TRANSPARENT CONDUCTING FILM
20220344072 · 2022-10-27 · ·

Provided is a transparent conducting film containing metal nanowires, the conducting film having a preferable optical property, electrical property, and having almost no in-plane resistance anisotropy.

A method for producing a transparent conducting film provided with a conducting layer containing a metal nanowire and a binder resin, comprising steps of: preparing a coating liquid containing the metal nanowire and the binder resin, and coating the coating liquid on one main face of a transparent substrate, the coating step being performed by a bar-coater with a bar which has a bar surface constituted by a material having a friction coefficient of 0.05 to 0.45, wherein when the coating liquid is coated on one main face of the transparent substrate by the bar, a relative moving velocity (coating velocity) V (mm/sec) of the transparent substrate relative to the bar satisfies 2000≥V≥350, a groove formed on the bar has a pitch (P) and a depth (H) which satisfy a ratio P/H of 9 to 30, and on the bar surface, the groove is formed to be inclined in a way so that an angle between the longitudinal direction of the bar and a direction that the groove is formed is in a range of 60° to 88°.

METHOD FOR PRODUCING TRANSPARENT CONDUCTING FILM
20220344072 · 2022-10-27 · ·

Provided is a transparent conducting film containing metal nanowires, the conducting film having a preferable optical property, electrical property, and having almost no in-plane resistance anisotropy.

A method for producing a transparent conducting film provided with a conducting layer containing a metal nanowire and a binder resin, comprising steps of: preparing a coating liquid containing the metal nanowire and the binder resin, and coating the coating liquid on one main face of a transparent substrate, the coating step being performed by a bar-coater with a bar which has a bar surface constituted by a material having a friction coefficient of 0.05 to 0.45, wherein when the coating liquid is coated on one main face of the transparent substrate by the bar, a relative moving velocity (coating velocity) V (mm/sec) of the transparent substrate relative to the bar satisfies 2000≥V≥350, a groove formed on the bar has a pitch (P) and a depth (H) which satisfy a ratio P/H of 9 to 30, and on the bar surface, the groove is formed to be inclined in a way so that an angle between the longitudinal direction of the bar and a direction that the groove is formed is in a range of 60° to 88°.