• 한국정보디스플레이학회:학술대회논문집
• /
• 2006.08a
• /
• pp.27-32
• /
• 2006

The present status and prospects for further development of thin-film electroluminescent (TFEL) devices using oxide phosphors are described. High-luminance oxide TFEL devices have been recently developed using a new combinatorial deposition technique featuring rf magnetron sputtering with a subdivided powder target. In addition, new flexible oxide TFEL devices have been fabricated on an oxide ceramic sheet and operated stably in air above $200^{\circ}C$.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2003.07a
• /
• pp.932-934
• /
• 2003

For the insulator of inorganic thin film electroluminescent (TFEL), devices AlON combined with TiON was used and it exhibits higher luminance than AlON as well as $Al_{2}O_{3}$ insulator. Furthermore, using AlON with TiON film show better stability and higher luminance than that with $TiO_{2}$ grown by conventional atomic layer deposition (ALD) for the application of the insulator of ZnS:Mn TFEL device.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2003.07a
• /
• pp.1075-1080
• /
• 2003

Design and fabrication process of a full inorganic electroluminescent microdislay based on aluminum / nanostructured porous silicon reverse biased light emitting Schottky diodes are discussing. Being of a solid state construction. this micro-display is cost-effective, thin and light in weight due to very simple device architecture. Its benefits include also super high resolution, wide viewing angles, fast response time and wide operating temperature range. The advantages of full integration of a LED-array and driving circuitry onto a Si-chip will be also discussed.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2002.08a
• /
• pp.743-745
• /
• 2002

We reported the possibility of color filtering of white method for achieving full-color displays using OELDs. Here, we fabricated white organic electroluminescent devices (OELDs) and drove moving images with a 384${/times}$160 pixel.

• Proceedings of the KIEE Conference
• /
• 2000.11c
• /
• pp.428-430
• /
• 2000

In this paper, the Flexible information display was implemented using AC powder electroluminescent device. ZnS:Cu and $BaTiO_3$ was used as a phosphor and dielectric respectively. The preparation of phosphor and dielectric layer was performed with screen printing. The implemented system of the Flexible information display was divided as following; EL display, driving circuit, software for driving. The properties of fabricated devices was measured with EL spectrum and brightness.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
• /
• v.20 no.2
• /
• pp.178-182
• /
• 2007

Electroluminescent (EL) devices based on organic thin films are considered to be one of the next generation of flat-panel displays. In this paper, we have investigated electro-luminescent (EL) characteristics of organic EL device using $Alq_{3}$, PBD as emitting material. Current and luminance can be seen that express a similar relativity in voltage and could know that luminance is expressing current relativity.

• Optical Science and Technology
• /
• v.4 no.2
• /
• pp.4-15
• /
• 2000

• Journal of the Microelectronics and Packaging Society
• /
• v.10 no.1
• /
• pp.1-5
• /
• 2003

The multi-layered OELDs(organic electroluminescent devices) were prepared on the patterened ITO (indium tin oxide)/glass substrates by the vacuum thermal evaporation method. The $Alq_3$ (tris-(8-hydroxyquinoline)aluminum) low molecule compound was used as the light emission layer. TPD(triphenyl-diamine) and $\alpha-NPD$ were used as the hole transport layer. CuPc (Copper phthalocyanine) was also used as the hole injection layers. In addition, QD2 (quinacridone2) organic material with $10\AA$ thickness was deposited in the $Alq_3$ emission layer to improve the luminance efficiency. The threshold voltage was about 7V for all devices. The luminance and efficiency of devices was improved by substitution the $\alpha-NPD$ for TPD as the hole as the hole transport layer. The luminance efficiency of the OELD sample with QD2 thin film in the $Alq_3$ emission layer was found to be 1.55 lm/W, which is about 8 times larger value compared to the sample without QD2 thin layer.

• Proceedings of the KIEE Conference
• /
• 2001.11a
• /
• pp.109-111
• /
• 2001

In this study, The cathode interface layer (CIL) was investigated using aromatic diamine derivatives. Cz-TPD (4,4'-biscarbazolyl (9)-biphenyl) used in the cathode interface layers is investigated emition charcaracteristics at the green organic electroluminescent devices TPD (N.N'-dyphenyl-N-N'-bis(3-methy phenyl)-1.1'-biphenyl-4.4'-diamine) as the hole transformer layer and $Alq_3$:tris (8-hydroxyquinoline) aluminium) as the electron transport layer and emiting layer maded use of the organic electroluminescent device. The Organic Electroluminescent Device with Ag, cathode and CIL of Cz-TPD(4,4'-biscarbazolyl(9)-biphenyl) showed good EL characteristics compare to a conventional Mg:Ag device and also an improved storage stability.[1] As the change in MgAg, Cz-TPD/Ag, Ag at the chthode, the electron and optical charcaracteriseics were investigated.

• Journal of the Korean Applied Science and Technology
• /
• v.16 no.2
• /
• pp.127-133
• /
• 1999

New electroluminescent materials base on anthracene chromophore, [9.10-bis(${\alpha}$-naph -thylethenyl) anthracene (${\alpha}$-BNA)] were newly synthesized. The anthracene derivatives with bulky substituent possessed high melting point and they gave stable amorphous films through vacuum - sublimation methods. Three types of electroluminescent devices were fabricated with double layer and triple layer structure : ITO/TPD/emission layer/MgAg, ITO/emission layer/ OXD-7 and ITO/ TPD/ emission layer/OXD-7/MgAg, respectively. In three types of devices with the emissive layer of ${\alpha}$-BNA, efficient orange electroluminescence was observed. In the triple layer device whit a emitting layer of 20 nm thickness , maximum luminance was about 10000 cd/ $m^2$ at an applied voltage of 10v and maximum external quantum efficiency was 1.0%.