40results about How to "Improved lifetime" patented technology

Azatriphenylene derivatives and their use in the electron-transporting layer of an electroluminescent device that comprises an anode, a spaced-apart cathode, and at least one electron-transporting layer disposed between the spaced-apart anode and cathode. Such EL devices provide lower drive voltage, improved power efficiency, and longer operational lifetime.

A semiconductor light emitting element of nitride compound semiconductors excellent in cleavability, heat radiation and resistance to leakage is made by epitaxially grow a nitride compound semiconductor layers on a substrate of sapphire, for example, and thereafter separating the substrate. For separating the substrate, there are a technique using a abruption mechanism susceptible to a stress such as a "lift-off layer" and a recesses on a substrate. A technique using laser light to cause a local dense heat stress at the abruption mechanism is effective. A nitride compound semiconductor obtained by separating the substrate may be used as a new substrate to epitaxially grow high-quality nitride compound semiconductors thereon.

An OLED device comprises a cathode, an anode, and has therebetween a light emitting layer comprising a phosphorescent emitter represented by Formula (I):LnM   (I)wherein each L is a cyclometallated ligand with at least one containing a coumarin group, M is Ir or Pt, and n is 3 when M is Ir and 2 when M is Pt. The invention also comprised the compound of formula (I).

The invention is directed towards an OLED device, comprising a first electrode, a second electrode, one or more organic layers formed between the first electrode and second electrode, at least one organic layer being a light-emitting layer; and a thin film encapsulation layer comprising either (a) at least one first layer of zinc oxide and at least one second layer of a second inorganic compound, or (b) a layer that is a mixture of zinc oxide and a second inorganic compound. The invention is also directed to a method of forming such an OLED device.

Luminescent polymers having doubly- or multiply-bridged biphenylene repeat units are provided, which are particularly suited as electroluminescent polymers. Monomers necessary for the synthesis of the multiply bridged biphenylene polymers are provided, as are electroluminescent devices utilizing these polymers.

An organic light emitting device includes a first electrode; a second electrode; an emissive layer disposed between the first electrode and the second electrode; a first hole injection layer disposed between the first electrode and the emissive layer; and a first electron transport layer disposed between the emissive layer and the second electrode. The hole injection layer includes a hole injecting material and a first compound made up of an element selected from the group consisting of Mo, Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, and B and an element selected from the group consisting of O, F, S, Cl, Se, Br, and I. The electron transport layer comprises an electron transporting material and a second compound, which is Li2O, MoO3, BaO, or B2O3.

An OLED including an anode; a cathode; a hole-injecting layer disposed over the anode, wherein the hole-injecting layer includes a first organic material with a reduction potential greater than −0.1 V and a lesser amount by volume of a second material with an oxidation potential less than 0.7 V, and wherein the second material does not include metal complexes; a hole-transporting layer disposed over the hole-injecting layer; a light-emitting layer disposed between the hole-transporting layer and the cathode; and an electron-transporting layer disposed between the light-emitting layer and the cathode.

An OLED device, comprising: a first electrode; a conductive protective electrode comprising a transparent conductive oxide layer wherein the conductive protective electrode is a hermetic layer having a thickness less than 100 nm; one or more organic layers formed between the first electrode and conductive protective electrode, at least one organic layer being a light-emitting layer; and a patterned auxiliary electrode in electrical contact with the conductive protective electrode.

An integrated circuit device. The device includes an address input(s) configured to receive address information from an address stream from an address command bus coupled to a host controller and an address output(s) configured to drive address information, and is coupled to a plurality of memory (DRAM) devices provided on a DIMM. The device has an address match table comprising a non-volatile memory device configured to store at least a revised address corresponding to a spare memory location and a bad address of at least one of the plurality of memory (DRAM) devices. The device has a control module configured to process and determine whether each address matches with a stored address in the address match table to identify the bad address and configured to replace the bad address with the revised address of the spare memory location.

Heterocyclic compounds, synthetic methods for preparing the same, and organic light-emitting display devices comprising the same are described. The subject heterocyclic compounds may comprise an aromatic ring or a heteroaromatic ring fused with a carbazole, dibenzothiophene, or dibenzofurane derivative, the compounds featuring rigid backbone structures with high glass transition temperatures and high melting points. The subject heterocyclic compounds may exhibit high electrical stability, improved charge transport ability, high heat resistance and improved light-emitting properties when used in organic light-emitting devices. Organic light-emitting display devices prepared according to the present invention exhibit lower driving voltages, increased luminescent efficiencies and longer lifetimes.

The prestressed flanged leaktight connection device comprises a first flange (130) presenting a first contact surface (111), a second flange (140) presenting a second contact surface (121) situated facing the first contact surface (111), a sealing gasket (160) received in a gasket housing (170) formed between the first and second contact surfaces and clamping elements (150) for clamping together the first and second flanges (130, 140). The first and second contact surfaces present a localized bearing zone (Z1) forming a dog situated in the vicinity of the sealing gasket (160). At least one (111) of the first and second contact surfaces presents, in the localized bearing zone (Z1) a surface of specified shape, e.g. conical, such that before tightening of the tightening elements (150), contact between the first and second flanges (130, 140) at the localized bearing zone (Z1) is limited to a fraction of the surface of the localized bearing zone (Z1), whereas after tightening of the tightening elements (150; 250) the contact is distributed evenly over all of the localized bearing zone (Z1).

An organic light emitting device includes an electron transport layer including an electron transport material and a metallic compound represented by Formula 1:Formula 1:XaYb wherein X is an alkaline metal, an alkaline earth metal, or a transition metal, and Y is one of a Group 7 element and an organic group C1-C20, and a is an integer within the range of 1 to 3, and b is an integer within the range of 1 to 3.

Luminescent polymers having sterically twisted arylene repeat units are provided, which are particularly suited as electroluminescent polymers. Monomers necessary for the synthesis of the sterically twisted polyarylene are provided, as are electroluminescent device utilizing these polymers.

An integrated circuit memory interface device coupled to a dynamic random access memory device is provided. The device includes an address match table. The address match table includes a plurality of first addresses. Each of the first addresses is associated with a memory cell having a refresh characteristic outside of a specification for a DRAM device. The device has a plurality of second addresses. Each of the second addresses is associated with a refresh characteristic within a specification of the DRAM device and outside of a predetermined refresh characteristic range characterized to eliminate accesses to memory cells not meeting the predetermined refresh characteristic range.

A dielectric ceramic composition comprises, a main component including barium titanate, a first subcomponent including MgO, a second subcomponent including sintering aids of SiO2 compound, a third subcomponent including at least one of V2O5, Nb2O5 and WO3, a fourth A subcomponent including RA oxide (note that, RA is at least one selected from Tb, Gd and Dy), a fourth B subcomponent including R oxide (note that, R is at least one selected from Ho, Y and Yb), and a fifth subcomponent including MnO or Cr2O3.

The invention relates to a multi-layered device and a method for making a multi-layered device. The method comprises the steps of determining a desired sequence of two or more polymers in a multi-layered device; for each of the two or more polymers in the desired sequence, identifying a solubility window in a solubility graph, and selecting a solvent based on the solubility window such that the solvent does not dissolve a preceding polymer in the desired sequence; depositing each of the two or more polymers from its selected solvent; and forming a multi-layered device having the two or more polymers in the desired sequence.

Luminescent polymers having sterically twisted arylene repeat units are provided, which are particularly suited as electroluminescent polymers. Monomers necessary for the synthesis of the sterically twisted polyarylene are provided, as are electroluminescent device utilizing these polymers.

Provided is a reticle used for forming a plurality of vias for connecting first wirings provided in a first wiring layer and second wirings provided in a second wiring layer formed above the first wiring layer. The first wirings and the second wirings are provided along one of a first direction and a second direction, and the first direction and the second direction perpendicularly cross each other. The reticle includes a plurality of via opening patterns for forming the plurality of vias. Each of the plurality of via opening patterns has a rectangular shape, and is arranged to cause each side of each of the via opening patterns to be diagonal with respect to the first direction and the second direction.

A coupled lamp driving device is described, comprising an alternating current (AC) power supply providing a sine-wave to two ends of each of a plurality of coupled transformers each having a primary side connected to each other at a primary side thereof and a secondary side; the plurality of coupled transformers connected to each other at the primary side thereof directing the sine-wave signal from the AC power supply to the two sides of the primary side of each of the coupled transformers and connected to an end of one of a plurality of lamps at one end of the secondary side thereof and connected to a reference level at the other end thereof, and the plurality of lamps each having the other end connected to a reference level. Since the primary sides of the coupled transformers are connected in series, a current flown on the primary side of each of the coupled transformers is equal to each other, respectively. Further, since the numbers of coils of the primary and secondary sides, respectively, are equal to each other, currents flown on the secondary side of each of the coupled transformers are also the same. Therefore, the luminance of each of the plurality of lamps can be maintained uniformly.

The present disclosure relates to an organic electroluminescent element, and more particularly to an organic electroluminescent element including a novel boron-based organic compound and anthracene-based organic compound in one or more organic layers included in the organic electroluminescent element. The present disclosure may provide an organic electroluminescent element, which is prevented from deterioration in color characteristics and has characteristics such as long lifetimes, as a result of using a host material having a specific structural formula despite having high polarity.

A compound represented by formula (1):wherein R1 to R7, R11 to R18, L1 to L3, a to c, n, and Ar are as defined in the description,provides an organic electroluminescence device having an emission efficiency and a device lifetime further improved.

The present invention provides an organic compound of following formula and an organic light emitting diode and an OLED device including the organic compound.

Provided is a method of preparing a lithium secondary battery which may simultaneously improve output characteristics and lifetime characteristics of the lithium secondary battery by preparing an electrode on which an SEI film is formed through a pretreatment process, putting an electrode assembly including the electrode in a battery case, and injecting an electrolyte thereinto.

An organic electroluminescent element including a light emitting layer containing a first host compound, a second host compound, and a phosphorescent metal complex disposed between a cathode and an anode, wherein the first and the second host compounds satisfy the requirements that: in comparison of emission bands of maximum emission intensity in fluorescence emission spectra of single films of the first host compound alone, the second host compound alone, and a mixture of the first and the second host compounds, a difference between a wavelength of a fluorescence emission end located on a longer wavelength side among fluorescence emission ends of the first host compound and the second host compound, and a wavelength of a fluorescence emission end of the mixture is −3 to 3 nm; and a LUMO energy level and a HOMO energy level of the first host compound and the second host compound satisfy specific relationships.