摘要:
The present invention relates to a novel iridium complex into which carbazole-substituted pyridine derivatives and various substituents-substituted phenyl derivatives are introduced as main ligand and a electrophosphorescence diode containing the same as a dopant of a light-emitting layer. When the iridium complex according to the present invention is applied to an organic light-emitting diode, the heat-resistance property and the light-emitting property can be significantly improved as well as the light-emitting efficiency and the like can be significantly improved by doping the iridium complex compound into the light-emitting layer as compared to the conventional organic light-emitting diode.
摘要:
Provided is a nitride-based semiconductor light emitting device having increased efficiency and power characteristics and method of manufacturing the same. The method may include forming a sacrificial layer on a substrate, forming a passivation layer on the sacrificial layer, forming a plurality of masking dots of a metal nitride on the passivation layer, laterally epitaxially growing a nitride-based semiconductor layer on the passivation layer using the masking dots as masks, forming a semiconductor device on the nitride-based semiconductor layer, and wet etching the sacrificial layer to separate and/or remove the substrate from the semiconductor device.
摘要:
A thermotropic side-chain liquid crystal polymer and a ferroelectric liquid crystal display employing the same as an orientation layer are provided. The thermotropic side-chain liquid crystal can be advantageously synthesized and is soluble in general organic solvents, thus exhibiting good processability. Further, the ferroelectric liquid crystal display employing the thermotropic side-chain liquid crystal polymer has a uniform orientation layer rarely having defects and good contrast ratio and memory characteristics.
摘要:
Conducting polymeric side chain liquid crystals are prepared by incoporating liquid crystalline compounds in a main chain selected from the group consisting of acetylene derivatives and thiophene derivatives. The liquid crystal has conductivity and liquid crystallinity at the same time and is soluble in most organic solvents, giving good processability. The liquid crystals are advantageously used as a polymer membrane as well as an orientation layer.
摘要:
Exemplary embodiments of the present invention relate to an LED lamp including a substrate, a first LED, a second LED, a heat sink, and a transparent cover. The first LED is arranged on a first surface of the substrate. The second LED is arranged on a second surface of the substrate, the second surface being an opposite side of the substrate from the first surface. The heat sink has a mounting surface on which the substrate is arranged. The heat sink also has a reflection surface. The transparent cover covers the substrate, the first LED, and the second LED.
摘要:
An odor compound release device includes a support that is deformed when an external stimulus is applied, and when the external stimulus is not applied, restored to its original state. A plurality of spaces are located in the support, have upper portions closed by the support, and are to be filled with odor compounds, wherein the upper portions are opened or closed by deformation or restoration of the support due to the application of the external stimulus. A member that is located in the support or on a surface of the support and applies the external stimulus to the support.
摘要:
A thermoelectric material has a microstructure deformed by cryogenic impact. When the cryogenic impact is applied to the thermoelectric material, defects are induced in the thermoelectric material, and such defects increase phonon scattering, which results in enhanced figure of merit.
摘要:
An ultraviolet luminescent ink is printed to form a pattern containing uniformly dispersed quantum dots without aggregation. In addition, the ultraviolet luminescent ink is transparent under natural light, so that the pattern is not visually observed, but emits light only upon UV irradiation. Therefore, the ultraviolet luminescent ink is useful in introducing codes in security articles, such as passports and bank bills. The ultraviolet luminescent ink can be used in the manufacture of security articles, such as passports, securities, bank bills, identification cards and credit cards. A security system using the ultraviolet luminescent ink is also disclosed.
摘要:
A method of manufacturing a soluble conductive poly acetylene derivative represented by the following formula (I) including the steps of synthesizing a propargyl derivative by reacting a propargyl halogenide and an alkyne derivative and polymerizing the propargyl derivative in the presence of a transition metal catalyst. The thus obtained novel soluble conductive polymer can be used in a display device. ##STR1## (wherein, X is oxygen atom or sulfur atom, R.sub.1 and R.sub.2 are independently selected from the group consisting of hydrogen, C.sub.2 -C.sub.10 alkyl, C.sub.2 -C.sub.10 alkenyl; or when one of R.sub.1 and R.sub.2 is phenyl, the other is hydrogen or C.sub.1 -C.sub.10 alkyl, n is an integer between 50.about.200). The soluble conductive polymer of the present invention can be easily polymerized and has good stability and electrochromic characteristics when applied to display devices.