OXIDE PHOSPHOR LIGHT EMITTING DEVICE AND DISPLAY DEVICE USING THE SAME

• Main Authors: YANG, JI SEOK, PARK, GWAN HOON, KWAK, YONG SEOK, PARK, UN BAE
• Format: Patent
• Language: English; Korean
• Published: 10.05.2018
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMISTRY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DYES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FREQUENCY-CHANGING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PAINTS; PHYSICS; POLISHES; SEMICONDUCTOR DEVICES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The present invention provides an oxide phosphor having excellent structural stability, excellent luminescence brightness in red, and a new crystal structure which is easy to enhance luminescence brightness, and a light emitting device and a display device using the same. The oxide phosphor according to the present invention comprises a matrix containing at least Li, Rb, Ge, and O and an activator dissolved in the matrix, wherein the activator may have at least one rare earth element selected from a group comprising Mn, Ce, Pr, Nd, Sm, Eu, Gd, Dy, Tb, Ho, Er, Tm and Yb. 본 발명은 구조 안정성이 우수하고 적색에서 발광 휘도가 우수하며, 발광 휘도의 개선에 용이한 새로운 결정구조를 갖는 산화물계 형광체와 이를 이용한 발광 장치 및 디스플레이 장치를 제공하는 것으로, 본 발명에 따른 산화물계 형광체는 적어도 Li, Rb, Ge, 및 O를 함유하는 모체와 모체에 고용된 부활제를 포함하며, 부활제는 Mn, Ce, Pr, Nd, Sm, Eu, Gd, Dy, Tb, Ho, Er, Tm 및 Yb으로 구성된 그룹으로부터 선택된 1종 이상의 희토류 원소를 가질 수 있다.