摘要:
A method of manufacturing a board on chip package including laminating a dry film on a carrier film, one side of which is laminated by a thin metal film; patterning the dry film in accordance with a circuit wire through light exposure and developing process, and forming a solder ball pad and a circuit wire; removing the dry film; laminating an upper photo solder resist excluding a portion where the solder ball pad is formed; etching the thin metal film formed on a portion where the upper photo solder resist is not laminated; mounting a semiconductor chip on the solder ball pad by a flip chip bonding; molding the semiconductor chip with a passivation material; removing the carrier film and the thin metal film; and laminating a lower photo solder resist under the solder ball pad. The board on chip package provides a high density circuit since a circuit pattern is formed using a seed layer.
摘要:
The present invention relates to an attach paste composition for a semiconductor package. The attach paste composition for a semiconductor package includes a mixed resin, or a blend of an elastic resin and an epoxy resin as a basic resin. At this time, preferably the basic resin includes 50 to 95 weight % of the elastic resin and 5 to 50 weight % of the epoxy resin. The present invention enables a conventional semiconductor packaging method using a die adhesive to eliminate a pre-drying process performed after application of a die adhesive through screen printing and a thermal hardening process performed after an encapsulation process, maintains the properties of the die adhesive, ensures reliability of semiconductor products, and realizes a simple process.
摘要:
Disclosed is a novel group of compounds having a general structure of anthracene body substituted with at least one thiophenyl group, which can be further substituted with various substituent groups. These new compounds are generally compatible with organic electroluminescence. Also disclosed are organic electroluminescent devices and method of making the same. The organic electroluminescent devices include at least one of the compounds in various layers thereof. Organic electroluminescent devices employing the new compounds in their light-emitting layers show outstanding stability.
摘要:
A method of manufacturing a printed circuit board is disclosed, in which a cavity is formed for embedding a component, which includes: providing a core board, in which an inner circuit is buried; forming a first via in the core board for interlayer conduction; selectively forming a first photoresist in a position on the core board in correspondence with a position of the cavity; stacking a first build-up layer, on which a first outer circuit is formed, on the core board; and selectively removing the first build-up layer in correspondence with the position of the cavity and removing the first photoresist. Utilizing the method, a board can be manufactured with greater precision, as the thickness tolerance of the cavity may be obtained by controlling the thickness of the photoresist, and the overall thickness of the board can be controlled by controlling the height of the cavity.
摘要:
Disclosed is a novel group of compounds having a general structure of anthracene body substituted with at least one thiophenyl group, which can be further substituted with various substituent groups. These new compounds are generally compatible with organic electroluminescence. Also disclosed are organic electroluminescent devices and method of making the same. The organic electroluminescent devices include at least one of the compounds in various layers thereof. Organic electroluminescent devices employing the new compounds in their light-emitting layers show outstanding stability.
摘要:
The present invention relates to a novel chrysene derivative and an organic electronic device using the same. A chrysene according to the present invention may act as a hole injection, hole transport, electron injection and transport, or light emitting material in an organic light emitting device and an organic electronic device, and in particular, may be used alone as a light emitting host or a dopant.
摘要:
Disclosed is a method of manufacturing a printed circuit board. The method of manufacturing a printed circuit board having a via for interlayer connection can include forming a circuit pattern on one side of a carrier, pressing one side of the carrier into one side of the insulator, removing the carrier, forming a hole penetrating through the insulator by processing one end of the circuit pattern, and forming a conductive material inside the hole to have the conductive material correspond to the via.
摘要:
The present invention relates to a novel anthracene derivative, a method for preparation thereof, and an organic electronic device using the same. The anthracene derivative according to the present invention can function as a hole injecting, hole transporting, electron injecting, electron transporting, or light emitting in an organic electronic device including an organic light emitting device, and in particular, used alone as a light emitting, or as a host or dopant in a host/dopant system. The organic electronic device according to the present invention exhibits excellent characteristics in terms of efficiency, drive voltage, life time, and stability.
摘要:
The present invention relates to a novel diamine derivative, a method for preparation thereof, and an organic electronic device using the same. The diamine derivative according to the present invention can serve as a hole injecting, hole transporting, electron injecting, electron transporting, or light emitting material in an organic electronic device including an organic light emitting device. Particularly, it can be used as a light emitting material as used alone, and also serve as a light emitting host, or a light emitting dopant, in particular, a blue light emitting dopant. The organic electronic device according to the present invention exhibits excellent characteristics in terms of efficiency, drive voltage, life time, and stability.
摘要:
A flat panel display integrated with a touch screen panel. The connecting patterns, which connect adjacent first sensing cells and adjacent second sensing cells are formed on the same level of the lower surface of the upper substrate of the flat panel display of the same material as metal patterns formed around the edge of the touch screen panel, and by arranging the connecting patterns not to cross each other. The flat panel display panel can also be integrated with a touch screen having improved visibility by forming the touch screen panel on the upper substrate of the flat panel display such that connecting patterns are formed in the regions between the pixels.