87results about How to "Long drive life" patented technology

Redundancy in storage arrays is used to extend the life of disk drives and conserve power. In an exemplary storage array, a group of storage devices includes y storage devices. Data and redundant information is distributed across the y devices to provide m levels of redundancy. “Spun down devices” are provided by spinning down a set of one or more of up to m of the y storage devices. Meanwhile, data transfers to and from the group of storage devices continue to be serviced. After a predetermined time, the currently spun down disks can be spun up, and new spun down devices are provided by spinning down another set of one or more of m of the y storage devices. An array may include several groups of storage devices, each having its own value for y and m.

The organic electroluminescence element includes an anode metal layer above a substrate. The anode metal layer comprises an inner region and an outer region. The inner region is adjacent to and different than the outer region. An upper surface of the inner region is lower than an upper surface of the outer region. A metal oxide layer is on the inner region of the metal anode layer. A hole transport layer is above the metal oxide layer and the inner region. The hole transport layer comprises a hole-transporting organic material. An organic luminescent layer is above the hole transport layer and the inner region. A cathode layer is above the organic luminescent layer and the inner region. The cathode layer injects electrons into the organic luminescent layer. An insulating layer is above the outer region of the anode metal layer.

Disclosed is an organic electroluminescent device (organic EL device) that is improved in luminous efficiency, sufficiently secures driving stability, and has a simple configuration. This organic EL device has a light-emitting layer between an anode and a cathode piled one upon another on a substrate and the said light-emitting layer contains a fused polycyclic compound in which seven or more rings are fused together as a host material. The aforementioned fused polycyclic compound has a structure formed by fusing two or more indole rings to a carbazole ring. A specific example thereof is the compound represented by the following formula.

The objection of invention is to provide a composition for organic electroluminescent element having a smaller amount of foreign substance. The invention is a composition for organic electroluminescent element, which is for forming at least one layer selected from the group consisting of a light emitting layer, a hole injection layer and a hole transportation layer, wherein the composition comprises an aromatic amine polymer having a weight average molecular weight of 3,000 to 1,000,000 and a solvent, and a Zn concentration in the composition is less than 0.5 ppm.

The invention belongs to the field of organic electroluminescent materials, and discloses a heterocyclic compound and use thereof. The heterocyclic compound provided by the invention has a structure of a formula (B) and has the advantages of serving as a blue-light or dark-blue-light luminescent material for an organic electroluminescent device and overcoming the defects of an existing blue-lightluminescent material; and the compound, as a luminescent material, has a closely matched hole-electron transmission rate, which is conducive to improving the luminescence efficiency of the material and device stability. In addition, the compound has extremely high bond dissociation energy, which is conducive to prolonging the driving life of a display device. Moreover, the compound has an extremely high radiative transition rate constant, which is conducive to prolonging the driving life of an organic light-emitting diode device.

A method for starting up a wind energy plant after an operation stoppage, wherein the wind energy plant has a gearbox in the drive train and an operation management which can control at least one operational variable significant for the strain of the gearbox B of the wind energy plant to a desired value B_Soll, wherein after the operation stoppage, the desired value B_Soll is limited by a maximum value B_Max, which is preset depending on a measured temperature of a gearbox component and/or of a lubricant for the gearbox.

The present invention relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent compound according to the present invention can produce an organic electroluminescent device having low driving voltage, excellent current and power efficiencies, and remarkably improved driving lifespan.

A harmonic drive includes a circular spline, a cup-shaped flex spline meshed with the circular spline, a wave generator including an bearing mounted in the cup-shaped flex spline, an elliptical wheel mounted in the bearing and a coupling connected to the elliptical wheel so that an oil storage chamber is defined between the wave generator and the cup-shaped flex spline, and one or multiple stirrers connected to the coupling of the wave generator and drivable by the coupling to carry the storage lubricating oil out of the oil storage chamber for lubricating the bearing of the wave generator and the meshed tooth surfaces between the circular spline and the cup-shaped flex spline.

Provided are elements arranged along a ring of a drive power transfer belt wound on pulleys of a belt-drive continuously variable transmission. Each element has a recess at one side of the element and a projection projecting from the other side to fit into the recess of the adjacent element. The projection has a first engagement portion provided at its base side such that a predetermined engagement gap is created on the radially outer side when the projection fits in the recess of the adjacent element, and a second engagement portion provided at the tip side of the projection and decreasing in diameter toward the tip of the projection from the first engagement portion. The gradient with which the diameter of the second engagement portion decreases is larger than the gradient with which the diameter of the first engagement portion decreases toward the tip of the projection.

The objective of the present invention is to provide: a novel iridium complex compound; an organic electroluminescent element which achieves an improved element service life by being produced with useof this compound; and a display device and a lighting device, each of which uses this organic electroluminescent element. The present invention relates to an iridium complex compound represented by formula (1).

First and second masts of a stacker crane are provided in a travelling vehicle main body to be spaced away from each other in an X-direction and extending in a Z-direction. First and second travel wheels are mounted to the travelling vehicle main body to be spaced away from each other in the X-direction, and roll on an upper surface of a lower guide rail. First and second drive wheel units are provided in the travelling vehicle main body to be spaced away from each other in the X direction. Each of the first and second drive wheel units includes a first drive wheel and a second drive wheel. The first drive wheel is in contact with a first side surface of the lower guide rail, and the second drive wheel is pivotably attached to the travelling vehicle main body and urged toward the first drive wheel so that the second drive wheel is in contact with a second surface of the lower guide rail.

An organic electroluminescent device, comprising an anode;

• • a cathode; and a light-emitting functional portion sandwiched between the anode and the cathode, the light-emitting functional portion including a light-emitting part, an electron injection and transport part, and a hole injection and transport part; the anode being in contact with a titanium oxide particle thin layer.

The invention discloses a derivative compound by taking the dibenzofuran as a skeleton core and an application of the derivative compound in OLED. The derivative is a derivative compound by taking the dibenzofuran carbazole as a skeleton core; the outside of the dibenzofuran carbazole is connected with a functional group through a C-C bond or C-N bond. After the derivative compound taking the dibenzofuran carbazole as a skeleton core is used on OLED, the efficiency and the service life can be increased and the driving life can be greatly improved.

Disclosed is an organic electroluminescent element which has high driving stability and long service life. The organic electroluminescent element can be produced at low cost by forming a light-emitting layer using a composition for light-emitting layer formation in a specific environment, said composition containing a solvent and a compound that has a specific structure. Specifically disclosed is a method for manufacturing an organic electroluminescent element that comprises a light-emitting layer between a first electrode and a second electrode that is formed so as to face the first electrode. The method for manufacturing an organic electroluminescent element is characterized by comprising a light-emitting layer formation step wherein a coating film is formed by a wet film-forming process using a composition for light-emitting layer formation in an environment having an oxygen concentration of 18-22% by volume, said composition containing a solvent and a compound that is represented by general formula (1) and has a molecular weight of not less than 400. (In general formula (1), Ar31 and Ar32 each independently represents a substituted aromatic hydrocarbon ring group or an aromatic heterocyclic group. In this connection, a compound represented by general formula (1) does not have a partial structure of a nitrogen atom-containing heterocycle.)

Provided is a polymer having a repeating unit represented by the following formula (1). In the formula, Ar1, Ar2, and Ar3 each independently represent an aromatic hydrocarbon group or aromatic heterocyclic group, which may optionally have a substituent group, and n represents an integer equal to 4 or greater. Multiple aromatic hydrocarbon groups and aromatic heterocyclic groups may be linked directly, or through linking groups.