Abstract: A white organic light emitting device (WOLED) includes electroluminescence (EL) red and blue light emitting layers disposed inside a cavity and a non-electroluminescence (NEL) green light emitting unit disposed outside the cavity or on a region inside the cavity where there are no combinations of electrons and holes. The green light emitting unit adjusts a green spectrum by resonating greenish blue light in the cavity, or is disposed on a path through which red and blue light output from the cavity travels and adapted to absorb the blue light and emit green light. A photoeluminescence (PL) light emitting layer may be a capping layer covering the cavity. The capping layer functions as an optical path control layer controlling an optical path. A white spectrum is obtained by combining blue light and red light generated by EL and green generated by PL. This WOLED can operate at a low voltage.

Abstract: Provided is a white organic light emitting device (OLED). The white OLED includes a double cavity structure in which a first region and a second region are defined based on a transparent common electrode using a top emission method. A green phosphorescence or fluorescence emission layer is disposed in the first region, a blue fluorescence emission layer is disposed in the second region, a red emission layer is optionally disposed in the first region or the second region, and an optical path control layer (OPCL) for widening color gamut is disposed in a region in which green light and blue light are emitted so that color coordinates are not greatly changed due to a change in thickness of the OPCL and white light having good quality is obtained.

Abstract: A top-emitting or bottom-emitting OLED has a wide color gamut and reduces a variation in color with a viewing angle. The OLED includes a reflective electrode and a transmissive or semi-transmissive electrode disposed opposite each other; at least two organic emission layers (EMLs) interposed between the reflective electrode and the transmissive or semi-transmissive electrode; and an optical path control layer disposed on an outer surface of the transmissive or semi-transmissive electrode. A resonator is formed between the reflective electrode and the optical path control layer so a resonance mode of light extracted from the optical path control layer is a multi-resonance mode having at least two modes in a visible light region. A distance between the organic EMLs satisfies the condition of constructive interference between light beams emitted by the respective organic EMLs. A color display apparatus using the OLED are taught.

Abstract: An organic light emitting device (OLED) having increased light output efficiency and a wide color gamut, and a color display apparatus employing the OLED, includes: a substrate; a reflective electrode formed on the substrate; an organic light emitting layer formed on the reflective electrode; a semi-transparent or transparent electrode formed on the organic light emitting layer; and an optical path control layer formed on the semi-transparent or transparent electrode and formed of a light transmitting material. In the OLED, resonators are formed between the reflective electrode and the semi-transparent or transparent electrode, between the reflective electrode and the top surface of the optical path control layer, and between the top surface of the semi-transparent or transparent electrode and the top surface of the optical path control layer, respectively, therefore, as an optical mode output to the exterior of the optical path control layer, at least two multiple resonances are generated.

Abstract: A top emission type white organic light emitting device (OLED) has a high resolution and a wide color gamut, and a color display apparatus uses the same. The white OLED includes a substrate; a reflective electrode formed on the substrate; an organic light emitting layer formed on the reflective electrode; a semi-transparent electrode formed on the organic light emitting layer; and in the white OLED, a wavelength of a resonating mode determined by an optical thickness between the reflective electrode and semi-transparent electrode is shorter than a shortest wavelength in a visible light region of a white light spectrum generated in the organic light emitting layer.

Abstract: A white organic light emitting device (OLED) includes a pair of independent electrodes, a common electrode positioned between the independent electrodes, and a pair of white emission units respectively positioned at both sides of the common electrode in a mirror symmetry and emitting white light.

Abstract: A white organic light emitting device (OLED) includes an anode, a first phosphorescent layer including a first host material and a first dopant disposed on the anode, a blue fluorescence layer including a blue host material and a blue dopant disposed on the first phosphorescent layer, and a second phosphorescent layer including a second host material and a second dopant disposed on the blue fluorescence layer. In addition, a triplet energy of the blue host material of the blue fluorescence layer is greater than both of a triplet energy of the first dopant of the first phosphorescent layer and a triplet energy of the second dopant of the second phosphorescent layer.

Abstract: Provided is an organic tunneling p-n junction diode. The organic tunneling p-n junction diode includes an n-doped organic semiconductor layer and a p-doped organic semiconductor layer which are doped with extrinsic impurities. When either a reverse-bias voltage or a forward-bias voltage is applied, the organic tunneling p-n junction diode is turned off within a predetermined voltage range and has exponential voltage-current characteristics outside the predetermined voltage range.

Abstract: Provided is a white organic light emitting device and a display apparatus and a lighting apparatus that include the white organic light emitting device. The white organic light emitting device comprises an anode, a hole transport layer, a light emitting layer, an electron transport layer, and a cathode. The light emitting layer includes a red light emitting layer, a blue light emitting layer, and a green light emitting layer sequentially formed from the anode. A functional layer, which blocks an energy transfer and controls electron mobility between the light emitting layers, is formed between the red light emitting layer and the blue light emitting layer or between the blue light emitting layer and the green light emitting layer. The functional layer formed between the red light emitting layer and the blue light emitting layer has a thickness of 50 to 100 ?.

Abstract: A white organic light emitting device (OLED) includes an anode and a cathode spaced apart from each other; a blue light emitting layer, a green light emitting layer, and a red light emitting layer sequentially formed between the anode and the cathode; a first buffer layer formed between the blue light emitting layer and the green light emitting layer, and having a HOMO (highest occupied molecular orbital)-LOMO (lowest occupied molecular orbital) energy gap higher than or equal to that of the adjacent light emitting layers; and a second buffer layer formed between the green light emitting layer and the red light emitting layer, and having a LOMO energy level higher than that of the red light emitting layer.

Abstract: A white organic light emitting device and a display apparatus and a lighting apparatus including the same. The white organic light emitting device include an anode, a hole transporting layer, a light emitting layer, an electron transporting layer, a cathode, and at least one color stabilizing layer between the light emitting layer and the electron transporting layer.

Abstract: Provided is a biosensor that uses multiple organic light emitting diodes (OLEDs) as light sources. The biosensor includes a transparent substrate, a plurality of OLEDs which are disposed on a first surface of the transparent substrate and are electrically separated from each other, and a photo detector above the transparent substrate that receives light emitted from a specimen disposed on the transparent substrate, wherein the specimen is disposed on a region of a second surface which is a surface opposite to the first surface of the transparent substrate.

Abstract: Provided is an organic electro-luminescent display (OELD). The OELD includes: a plurality of unit pixels having an organic light emitting unit and a driving unit for driving the organic light emitting unit; and a substrate supporting the unit pixels, wherein the substrate has a non-planar portion corresponding to the light emitting unit and increasing a surface area, and the light emitting unit has a non-planar cross-sectional shape corresponding to the non-planar portion. The OELD has a concave portion or a convex portion for enlarging a surface such that the substantial area of an organic light emitting material increases. Thus, an effective light emission area increases in a pixel having a limited area and light emission of desired high brightness can be performed by a low driving voltage. A reduction in a driving voltage causes improvement in the durability of a pixel and the life span of the OELD is enlarged.

Abstract: Provided are a highly efficient phosphorescent organometallic complex and an organic electroluminescent (EL) device using the same. The organometallic complex can be used in the formation of an organic layer of the organic EL device, and can emit light in a red wavelength range as a highly efficient phosphorescent material. The organic EL device using the organometallic complex can exhibit high brightness and a low driving voltage.

Abstract: Provided are a compound represented by Formula 1 below and an organic light-emitting device including the same: wherein X is a C, Si, or Ge atom disubstituted with H or C1-60 organic groups, Ra-Rj are C1-60 organic groups, CY1 is a substituted or unsubstituted C5-C60 aromatic ring or a substituted or unsubstituted C2-C60 heteroaromatic ring, and n is 0 or 1. The use of the compound provides an organic light-emitting device having a low operating voltage and good efficiency and brightness.

Abstract: Provided are an organic light-emitting compound that is a diarylethene derivative represented by Formula 1, and an organic electroluminescent (EL) device using the organic light-emitting compound, and a method of manufacturing the organic EL device: where R1, Ar1, Ar2, Ar3, Ar4, Ar5, Ar6, k, l, m, and n are the same as defined in the specification. The organic light-emitting compound contains a cis-diarylethene group linked with an aliphatic ring, and thus crystallization of the organic light-emitting compound is unlikely to occur and the compound is highly soluble to organic solvents and easily provides liquid formulation with organic solvents. Thus, the organic light-emitting compound can easily be used in organic EL devices. An organic EL device manufactured using the compound can have a thermostable layer and thus has improved light-emitting properties in term of superior turn-on voltage, efficiency, color purity, etc.

Abstract: Provided are a high-efficiency phosphorescent multinuclear copper complex and an organic electroluminescent device using the complex. The multinuclear copper complex can be used to form an organic layer of an organic electroluminescent device, and the organic electroluminescent device using the complex can emit light in the yellow to red wavelength region of 560 nm to 630 nm as a high-efficiency photoluminescent material, and provides a high brightness and a low turn-on voltage.

Abstract: Provided are a high-efficiency, photoluminescent heteronuclear copper (I)-iridium (III) complex and an organic electroluminescent device using the complex. The photoluminescent heteronuclear copper (I)-iridium (III) complex can be used to form an organic layer of an organic electroluminescent device, can emit light of 590-630 nm as a high-efficiency, photoluminescent material, and provides a high brightness and a low turn-on voltage.

Abstract: Provided is mass spectroscopic method using electrospray ionization. The mass spectroscopic method by electrospray ionization includes analyzing an uncharged, non-basic and low polarity sample mixed with a polar solvent by using a salt as additives.

Abstract: The present invention relates to a synthetic catalyst of the following formula (A) which can selectively recognize and cleave a specific protein among a protein mixture, and to a method for selective cleavage of a target protein using the same: