Abstract:
The present invention provides a structure of a printed circuit board and a manufacturing method thereof. The method includes: (a) forming a circuit pattern on an insulating layer in which a seed layer is formed; (b) embedding the circuit pattern into the insulating layer by a press method; and (c) removing the seed layer. According to the present invention, a fine pattern may be formed without occurring alignment problem by forming a circuit pattern directly on an insulating layer and reliability of the formed fine pattern may be increased by performing a process of embedding protruded circuits into the insulating layer. In addition, possibility of inferior circuit occurring due to ion migration between adjacent circuits may be reduced by performing over-etching a circuit layer to be lower than a surface of the insulating layer during the etching process of removing a seed layer.
Abstract:
A method for fabricating a large-area nanoscale pattern includes: forming multilayer main thin films isolated by passivation layers; patterning a first main thin film to form a first main pattern; forming a first spacer pattern with respect to the first main pattern; and forming a second main pattern by transferring the first spacer pattern onto a second main thin film. By using multilayer main thin films isolated by different passivation films, spacer lithography capable of reducing a pattern pitch can be repetitively performed, and the pattern pitch is repetitively reduced without shape distortion after formation of micrometer-scale patterns, thereby forming nanometer-scale fine patterns uniformly over a wide area.
Abstract:
The present invention provides a structure of a printed circuit board and a manufacturing method thereof. The method includes: (a) forming a circuit pattern on an insulating layer in which a seed layer is formed; (b) embedding the circuit pattern into the insulating layer by a press method; and (c) removing the seed layer. According to the present invention, a fine pattern may be formed without occurring alignment problem by forming a circuit pattern directly on an insulating layer and reliability of the formed fine pattern may be increased by performing a process of embedding protruded circuits into the insulating layer. In addition, possibility of inferior circuit occurring due to ion migration between adjacent circuits may be reduced by performing over-etching a circuit layer to be lower than a surface of the insulating layer during the etching process of removing a seed layer.
Abstract:
Disclosed herein is a semiconductor chip, including: a first substrate having a concave formed on one surface thereof and an opening formed on a bottom surface of the concave; a second substrate contacting the other surface of the first substrate; and a semiconductor chip mounted in the concave.
Abstract:
A structure of a printed circuit board and a method of manufacturing the same are provided. The manufacturing method includes a first step of forming at least one connecting bump on first circuit patterns and forming a first insulating layer to form an inner circuit board, a second step of processing a second insulating layer with a metal seed layer formed thereon using a mold to form second circuit patterns so as to construct an outer circuit board, and a third step of aligning the inner circuit board and the outer circuit board with each other and laminating the inner circuit board and the outer circuit board. Accordingly, a structure of a high-density high-reliability printed circuit board having a circuit embedded in an insulating layer can be provided. A seed layer forming process for forming an outmost circuit can be removed by using an insulating layer combined with a seed layer. In addition, a conductive structure in the form of a connecting bump is formed, and thus a complicated process of forming a via-hole and filling the via-hole with a conductive material is not required. Furthermore, a process of grinding the surface of the filled conductive material is removed so as to remarkably decrease a circuit error rate.
Abstract:
Provided is a wire grid polarizer and a backlight unit using the wire grid polarizer. The wire grid polarizer comprises a first grid layer thrilled on a substrate and provided with at least one of a first grid pattern, and a second grid layer formed on the first grid pattern and provided with at least one of a second grid pattern made of metal material wherein the first grid layer is made of high molecular substance having a lower refraction index than that of the substrate.According to the present invention, by forming a first grid pattern on a substrate using a high molecular substance layer and by forming a metal grid pattern on the first grid pattern, transmission rates of respective wavelengths depending on light angles of incident light are controlled and thereby minimizing color variations depending on view angle.
Abstract:
The stackable semiconductor chip includes a semiconductor chip having pads on an upper surface thereof, and an adhesive formed on lateral surfaces of the semiconductor chip. A first insulation layer is formed over the upper surface of the semiconductor chip and the adhesive, and defines a plurality of through holes which expose the pads. Metal lines, formed on the first insulation layer, are connected to a respective one of the pads via a respective one of the through holes. A protective layer is formed on the metal lines and the first insulation layer. A plurality of stackable semiconductor chips are stacked by disposing double-sided adhesive between the stackable semiconductor chips. Then a plurality of external terminal pads are formed on one of the lateral surfaces of the stack of stackable semiconductor chips. Each external terminal pad is electrically connected to at least one of the metal lines in one of the stackable semiconductor chips. Next, a solder ball is formed on each of the plurality of external terminal pads to produce a stacked semiconductor chip package.
Abstract:
Provided is a method for manufacturing a printed circuit board. The method for manufacturing a printed circuit board includes preparing an insulation board, irradiating a laser onto a graytone mask to each a surface of the insulation board, thereby forming a circuit pattern groove and a via hole at the same time, and filling the circuit pattern groove and the via hole to form a buried circuit pattern and the via. Thus, the circuit pattern groove and the via hole may be formed using the graytone mask at the same time without perfolining a separate process for forming the via hole. Therefore, the manufacturing process may be simplified to reduce the manufacturing costs.
Abstract:
Provided are a wire grid polarizer and a backlight unit using the wire grid polarizer. The wire grid polarizer comprises a first grid layer formed on a substrate and provided with at least one of a first grid pattern, and a second grid layer formed on the first grid pattern and provided with at least one of a second grid pattern made of metal material wherein the first grid layer is made of high molecular substance having a lower refraction index than that of the substrate. By forming a first grid pattern on a substrate using a high molecular substance layer and by forming a metal grid pattern on the first grid pattern, transmission rates of respective wavelengths depending on light angles of incident light are controlled and thereby minimize color variations depending on view angle.
Abstract:
An embedded PCB, a multi-layer PCB using the embedded PCB, and a method of manufacturing the same are provided. The method of manufacturing an embedded PCB includes a first step of patterning an insulating layer on which a photoresist layer is formed using a laser such that parts of the insulating layer are selectively etched to form a circuit pattern region and a second step of filling the circuit pattern region with a plating material to form a circuit pattern. Accordingly, the method of manufacturing an embedded PCB can simultaneously or sequentially etch a photoresist layer and an insulating layer using a laser to form a circuit pattern so as to obtain a micro pattern and simplify a manufacturing process and achieve alignment accuracy in construction of a multi-layer PCB using the embedded PCB to thereby improve product reliability and yield.