Abstract:
Disclosed herein is a fluorescent light source including an yttria layer. Specifically, the current invention provides a fluorescent light source having high quality and a long lifetime, which can prevent a decrease in initial luminance of a fluorescent light source, including a fluorescent lamp, and resist the radiation of ultraviolet light and the permeation of mercury, which are the causes of deterioration of the fluorescent light source, so as not to decrease the luminance in proportion to the lighting time of the fluorescent light source, thus assuring both initial luminance properties and luminance properties after use for a long period of time. Such a fluorescent light source includes glass, a fluorescent material layer, and an absorbing layer composed mainly of yttria particles formed between the glass and the fluorescent material layer or on the inner surface of the fluorescent material layer. In addition, an yttria coating composition used in the fluorescent light source and a method of fabricating the fluorescent light source using the composition are also provided.
Abstract:
Disclosed herein is a colorless and transparent antibiotic material including silver and a method of preparing the same. Specifically, the current invention pertains to a method of preparing a colorless and transparent antibiotic material including silver (Ag), which includes a) reacting a salt including a silver ion (Ag+) with a salt including a sulfate anion, to prepare a silver (Ag)-sulfate complex; and b) diluting the silver (Ag)-sulfate complex prepared in a) with water, and to an antibiotic material prepared using the method. Further, the current invention pertains to an antibiotic material including silver, which is harmless to the human body and exhibits disinfecting and antibiotic activities, and as well, is colorless and transparent and does not easily form colored oxides, unlike conventional silver-based antibiotic materials, and to a method of preparing such an antibiotic material. Thus, the colorless and transparent antibiotic material of this invention can be widely applied to manufacture industrial goods, such as non woven fabrics, packaging materials, etc., living goods, such as clothes, bedclothes, etc., and fiber goods.
Abstract:
The present invention relates to conductive metal nano particles and an nano-metal ink comprising the same, and more particularly, conductive metal nano particles comprising a metal and a hydrocarbon containing a carboxyl group, a production method thereof, a nano-metal ink comprising the conductive nano particles and a method for preparing printed circuit board using the nano-metal ink. According to the present invention, it is possible to laminate both the production of copper clad laminate (CCL) to bond a copper foil to a film and lithography process and simplify the production process by directly printing a wiring on a resin film in a single process and considerably reduce the manufacture cost and produce highly integrated and highly effective printed circuit board through miniaturization of line width in the printed circuit board. According to the present invention, in formation of a wiring on a flexible printed circuit board (FPCB) used in electronic appliances and electrical equipment such as mobile phones, PDA, notebook computers and the like or a wiring of a general appliance, the printed circuit board (PCB) or flexible printed circuit board (FPCB), metal nano-particles for forming the wiring is prepared, the metal nano-particles are converted into ink, which is then printed. The printed circuit board(PCB) or flexible printed circuit board IBPCB) prepared by a novel method is applied to electric and electronic appliances for industrial, official or house hold.