Abstract:
본원은 염화물을 포함한 실리케이트계 형광체를 알칼리성 물질로 처리하는 것을 포함하는, 염화물계 또는 산화물계 형광체 분말의 제조 방법 및 이에 의하여 제조된 염화물계 또는 산화물계 형광체 분말에 관한 것으로서, 염화물을 이용한 강력한 산화 또는 환원시키는 것을 통해 희토류 금속이 첨가된 형광체의 발광강도를 증가시키고 상대적으로 낮은 온도에서 보다 안정하게 환원된 형광체 및 이의 제조방법을 제공할 수 있다.
Abstract:
알칼리 토금속염, 희토류 금속염, 3 족 금속염, 및 과량의 4 족 원소의 산화물 전구체를 포함하는 혼합 용액을 수득하는 것; 및 상기 혼합 용액에 셀룰로오스를 첨가한 후 열처리 하는 것을 포함하는 형광체의 제조 방법, 및 상기 방법에 의하여 제조되는 형광체에 관한 것이다.
Abstract:
The present invention relates to a chlorosilicate based fluorescent body containing rare-earth metals and a preparing method of the same, and specifically, to a chlorosilicate based fluorescent body containing rare-earth metals having an effect of emitting light in long wavelengths using large ion radius of chlorine elements, and a preparing method of the same. The obtained chlorosilicate based fluorescent body has a composition of M-Si-O-Cl, M-Si-B-O-Cl, M-Si-Al-O-Cl, or M-Si-P-O-Cl, wherein M is selected from the group consisting of alkali metal, alkali earth metal, transition metals, the rare-earth metal, and a combination thereof. [Reference numerals] (AA) Metal solution, water-soluble silicon compound(WSS); (BB) Immersion(cellulose); (CC) Stirring, grinding, and drying under the ultrasound; (DD) First sintering(150-400°C, air); (EE) Second sintering(500-1000°C, air); (FF) 700-1400°C, sintering under the reduction; (GG) Fluorescent body
Abstract:
The present invention relates to green phosphor, a method for manufacturing the same, and a white LED including the same. The green phosphor is represented in the below chemical formula 1. In the above chemical formula, M stands for metal chosen among Ba, Sr, Ca, Mg, and Zn, or a group combined from the same. Re includes more than one rare earth element chosen among the rare earth elements coated with boron. X is above 0.01 and below 0.3.
Abstract:
본원은, 브라운관, 발광 다이오드(LED), 플라즈마 디스플레이 패널PDP), 전계 방출 디스플레이(FED) 및 냉음극형광 램프(CCFL) 등과 같은 디스플레이용 및 램프용 발광기구에 사용할 수 있는 초미세입자의 SiO계(실리케이트계) 산화물 형광체 분말의 제조 방법에 관한 것으로서, 알칼리 금속 염, +2가 금속 또는 이들의 조합, 실리콘 화합물 및 희토류 금속 염을 포함하는 수용액을 고분자 물질에 함침시켜 전구체를 수득하고, 상기 전구체를 2단계로 소성함으로써 나노 크기 내지 서브 마이크로 크기의 SiO계 산화물 형광체 분말을 수득하는 것을 포함한다.
Abstract:
PURPOSE: A silicate-based oxide phosphor is provided to enable use as a fluorescent substance for a display or a lamp containing a cold cathode fluorescent lamp due to uniform particle size distribution and excellent luminous efficiency. CONSTITUTION: A method for preparing a silicate-based oxide phosphor comprises the steps of: impregnating an aqueous solution including alkali metal salt, divalent metal salt or combination thereof, silicon compound and rare earths metal salt, to a polymer; sintering the precursor in a furnace heated to the temperature of 400-1000 °C and again sintering the precursor in a reducing atmosphere to obtain SiO-based phosphor powder including alkali metal, +2 metal or combination thereof.
Abstract:
PURPOSE: YVO based fluorescent powder and a manufacturing method thereof are provided to secure the uniformity of particle distribution, and to use the powder for manufacturing display devices, and all kinds of lighting devices. CONSTITUTION: A manufacturing method of YVO based fluorescent powder comprises the following steps: impregnating a metal salt solution including yttrium and vanadium to a polymer material; calcinating the outcome from the previous step by inserting into a furnace heated into 500~1,000 deg C; sintering the outcome from the previous step by heating into 1,000~1,300 deg C; solution-processing the outcome with a basic solution.