Abstract: A substrate with an electronic component embedded therein includes: a core structure having a cavity; a metal layer disposed on a bottom surface of the cavity of the core structure; and an electronic component disposed on the metal layer in the cavity of the core structure. The substrate with the electronic component embedded therein has an excellent heat dissipation effect.

Abstract: A substrate with an electronic component embedded therein includes: a core structure having a cavity; a metal layer disposed on a bottom surface of the cavity of the core structure; and an electronic component disposed on the metal layer in the cavity of the core structure. The substrate with the electronic component embedded therein has an excellent heat dissipation effect.

Abstract: An electronic component embedded substrate includes a core structure including a first insulating body and core wiring layers and having a cavity and a stopper layer. An electronic component is disposed in the cavity. The stopper layer includes a first metal layer embedded in the first insulating body and having a portion of an inner surface exposed from the first insulating body, and a second metal layer disposed below the first metal layer and having at least a portion of an upper surface disposed as a bottom surface of the cavity. The cavity has an inner surface of the first metal layer and an inner surface of the first insulating body as a first wall surface and a second wall surface, respectively, and an inclination of the first wall surface is different from an inclination of the second wall surface.

Abstract: An electronic component embedded substrate includes a core structure including a first insulating body and core wiring layers and having a cavity and a stopper layer. An electronic component is disposed in the cavity. The stopper layer includes a first metal layer embedded in the first insulating body and having a portion of an inner surface exposed from the first insulating body, and a second metal layer disposed below the first metal layer and having at least a portion of an upper surface disposed as a bottom surface of the cavity. The cavity has an inner surface of the first metal layer and an inner surface of the first insulating body as a first wall surface and a second wall surface, respectively, and an inclination of the first wall surface is different from an inclination of the second wall surface.

Abstract: A printed circuit board includes: an insulating layer having a via hole formed therein; a single layer metal pad disposed in the insulating layer and having a center portion that is exposed by the via hole, the center portion of the pad having a higher roughness than peripheral portions of the pad; and a via formed in the via hole and connected to the center portion of the pad.

Abstract: A printed circuit board including: an insulating material; a metal layer stacked on a surface of the insulating material; and a via hole passing through the metal layer and the insulating material. The metal layer decreases in thickness in a region adjacent to the via hole, and an interface between the insulating material and the metal layer includes a region that is directed toward the via hole.

Abstract: A printed circuit board includes: an insulating layer having a via hole formed therein; a single layer metal pad disposed in the insulating layer and having a center portion that is exposed by the via hole, the center portion of the pad having a higher roughness than peripheral portions of the pad; and a via formed in the via hole and connected to the center portion of the pad.

Abstract: A printed circuit board including: an insulating material; a metal layer stacked on a surface of the insulating material; and a via hole passing through the metal layer and the insulating material. The metal layer decreases in thickness in a region adjacent to the via hole, and an interface between the insulating material and the metal layer includes a region that is directed toward the via hole.

Abstract: A chemically amplified photoresist composition is provided which includes: a solute including a novolac resin with an acid decomposable protecting group, a photoacid generator, and an organic solvent.

Abstract: A photoresist composition includes a binder resin, a photo acid generator, an acryl resin having four different types of monomers, and a solvent.

Abstract: A photoresist composition is provided. The photoresist composition includes an alkali-soluble resin; a photosensitizer containing a first compound that contains a diazonaphthoquinone represented by Formula 1 and a second compound that contains a diazonaphthoquinone represented by Formula 2; and a solvent. and R1 is selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 4 carbons, an alkenyl group having 2 to 4 carbons, a cycloalkyl group having 3 to 8 carbons, and an aryl group having 6 to 12 carbons, and R2 is selected from the group consisting of Cl, F, Br, and I.

Abstract: A photoresist composition includes from about 20% to about 50% by weight of a polymer, from about 0.5% to about 1.5% by weight of a photo-acid generator, from about 0.01% to about 0.5% by weight of a photo absorber and the remainder includes an organic solvent. Also provided is a method of forming a fine pattern including forming a thin film on a substrate; forming a photoresist pattern by using a photoresist composition that includes from about 20% to about 50% by weight of a polymer, from about 0.5% to about 1.5% by weight of a photo-acid generator, from about 0.01% to about 0.5% by weight of a photo absorber and a remainder comprising an organic solvent; and patterning the thin film by using the photoresist pattern as an etch-stop layer to form a fine pattern.

Abstract: A photoresist composition and method of forming pattern using the same are provided. The photoresist composition contains an alkali-soluble novolac resin, a photosensitizer including a compound of Chemical Formula 1, and a solvent.

Abstract: A photoresist composition is provided. The photoresist composition includes an alkali-soluble resin; a photosensitizer containing a first compound that contains a diazonaphthoquinone represented by Formula 1 and a second compound that contains a diazonaphthoquinone represented by Formula 2; and a solvent. and R1 is selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 4 carbons, an alkenyl group having 2 to 4 carbons, a cycloalkyl group having 3 to 8 carbons, and an aryl group having 6 to 12 carbons, and R2 is selected from the group consisting of Cl, F, Br, and I.

Abstract: A photoresist composition includes a binder resin, a photo acid generator, an acryl resin having four different types of monomers, and a solvent.

Abstract: A photoresist composition includes about 100 parts by weight of resin mixture including novolak resin and acryl resin and about 10 parts to about 50 parts by weight of naphthoquinone diazosulfonic acid ester. A weight-average molecular weight of the novolak resin is no less than about 30,000. A weight-average molecular weight of the acryl resin is no less than about 20,000. The acryl resin makes up about 1% to about 15% of the total weight of the resin mixture. When a photoresist film formed using the photoresist composition is heated, a profile variation of the photoresist composition is relatively small. Therefore, a residual photoresist film has a uniform thickness, and a short circuit and/or an open defect in a TFT substrate may be reduced.

Abstract: A photoresist composition includes a binder resin, a photo acid generator, an acryl resin having four different types of monomers, and a solvent.

Abstract: A photoresist composition includes a novolac resin, a benzophenone photosensitizer and an ethylidyne tris phenol photosensitizer, and an organic solvent. Thus, a micropattern having a higher resolution than the resolution of an exposure apparatus is formed to decrease an amount of exposure and/or exposure time, thereby improving manufacturing reliability and productivity.

Abstract: A photoresist composition includes 5% to 50% by weight of an alkali-soluble resin, 0.5% to 30% by weight of a quinone diazide compound, 0.1% to 15 % by weight of a curing agent, and a remainder of an organic solvent. A method of forming a metal pattern includes coating a photoresist composition on a base substrate having a metal layer, and forming a first photoresist film. The photoresist composition includes 5% to 50% by weight of an alkali-soluble resin, 0.5% to 30% by weight of a quinone diazide compound, 0.1% to 15% by weight of a curing agent, and a remainder of an organic solvent. The first photoresist film is patterned, and forms a first photo pattern. The base substrate having the first photo pattern is heated, and forms a first baked pattern. The metal layer is patterned using the first baked pattern, and forms a metal pattern.

Abstract: A photoresist composition includes a binder resin, a photo acid generator, an acryl resin having four different types of monomers, and a solvent.