37results about How to "Enhancing lifetime" patented technology

The present invention is an organic light emitting device (OLED) comprising an anode, a cathode and a luminescent region provided between the anode and the cathode. The luminescent region comprises an electron injection and transporting zone and at least one of a hole injection and transporting zone and a mixed charge transport layer. One or both of the electron injection and transporting zone and the mixed charge transporting layer comprises an azole compound represented by formula I and/or II. The provision of the novel azole compounds of the invention as electron transport materials within an organic electroluminescent device advantageously reduces power consumption and increases power conversion efficiency within the device and as such, are suitable for a variety of display applications.

A material for an organic EL device conatining a novel naphthacene derivative; a luminescent material containing a novel naphthacene derivative; and an organic electroluminescent device including one or more organic layers interposed between a cathode and an anode, and at least one layer of the organic layers containing a naphthacene derivative represented by the following formula (1) or (2).

An organic electroluminescent device including an anode (20), a cathode (80), and at least an emitting layer (50) and an electron-transporting layer (60) provided between the anode (20) and the cathode (80); the emitting layer (50) containing a host material which is a fluoranthene derivative represented by the following formula (1) and a dopant material which is an indenoperylene derivative:

wherein Ar is a substituted or unsubstituted aromatic group having 6 to 50 nucleus carbon atoms; and Rs are independently a hydrogen atom, substituted or unsubstituted aromatic group having 6 to 50 nucleus carbon atoms, or substituted or unsubstituted alkyl group having 1 to 50 carbon atoms.

Provided are a novel anthracene derivative and an organic light-emitting device using the same, and more particularly, an anthracene derivative having a core (e.g., an indenoanthracene core) where an anthracene moiety with excellent device characteristics is fused with a fluorene moiety or the like with excellent fluorescent properties, wherein an aryl group is introduced at the core, and an organic light-emitting device using the anthracene derivative, which is enhanced in efficiency, operating voltage, lifetime, etc.

The present invention relates to laundry machines, and, more particularly, to a safe laundry machine which enables a user to open/close a door easily, and can prevent an accident caused by opening/closing of the door from taking place.

The laundry machine includes a cabinet, a drum rotatably mounted in the cabinet, a door having a latch for being opened/closed selectively to expose an inside of the drum to an outside of the laundry machine, and a door switch assembly provided for enabling opening/closing of the door, wherein the door switch assembly includes a switch unit for making selective connection to the latch, and an opening operation unit spaced from the switch unit for the user to enable to disconnect the connection between the latch and the switch unit.

An organic light emitting device can include a first electrode and a second electrode, and a red emission layer, a green emission layer and a blue emission layer which are positioned between the first electrode and the second electrode. Each of the red emission layer, the green emission layer and the blue emission layer can be disposed in an entirety of a red sub-pixel area, a green sub-pixel area and a blue sub-pixel area. A distance between the first electrode and the second electrode in at least one of the red sub-pixel area, the green sub-pixel area and the blue sub-pixel area can be a first-order optical distance equal to λ/2n, where λ is a wavelength of light emitted from each of the sub-pixel areas, and n is an average refractive index of a plurality of organic material layers disposed between the first electrode and the second electrode.

A system and method for enhancing lifetime and throughput in a distributed wireless network is disclosed herein. The method may include sensing, by a first machine, different parameters of at least one neighboring machine; updating, by the first machine, at least one parameter of said first machine based on said sensed parameters of said neighboring machine; generating, by the first machine, a signed-graph on the basis of the updated parameter, wherein said generated graph comprises at least two nodes representing said updated parameter and at least one edge interconnecting said two nodes; iteratively updating, by the first machine, the at least one parameter at different time-scales until convergence is achieved; and communicating, by the first machine, inter-layer updates in individual layers of a transmission protocol stack of the first machine due to said update of at least one parameter.

An organic electroluminescent device including, a hole-transporting layer, an emitting layer and an electron-transporting layer in this order between an anode and a cathode, an emission spectrum having emission peaks when applying current for emission, the intensity (I_D) of the maximum emission peak among the emission peaks and the intensity (I_O) of another emission peak at a shorter wavelength than the wavelength of the maximum emission peak among the emission peaks satisfying the following formula (A),

I_O/I_D<1/50  (A).

Disclosed is a white organic light emitting device in which a lifetime of a device is enhanced. The white organic light emitting device includes a first emission part between a first electrode and a second electrode and a second emission part on the first emission part. At least one among the first and second emission parts includes an emission area control layer. The white organic light emitting device includes a first emission part between a first electrode and a second electrode, a second emission part on the first emission part, and a third emission part on the second emission part. At least one among the first to third emission parts includes an emission area control layer.

A position input system includes a touch screen, an active stylus and a driver. The driver transmits an uplink signal to the active stylus via the touch screen in a current touch period, the uplink signal containing timing information that informs the active stylus of timing of a next touch period in which the active stylus transmits a downlink signal to the driver via the touch screen. In another embodiment, the driver transmits an uplink signal to the active stylus via the touch screen in a current touch period of a current frame at a time different from a corresponding touch period of a previous frame.

Discussed is an organic light emitting display device. The organic light emitting display device can include a first emission part, a second emission part on the first emission part, and a first P-type charge generation layer between the first emission part and the second emission part. The first emission part includes a first hole transport layer, a first emission layer, and a first electron transport layer. The second emission part includes a second hole transport layer, a second emission layer, and a second electron transport layer. The second hole transport layer and the first P-type charge generation layer are disposed adjacent to each other. The second hole transport layer includes a first material and a second material. The first material has an absolute value of a HOMO energy level which can be greater than an absolute value of a LUMO energy level of the first P-type charge generation layer.

A lamp assembly includes two juxtaposed electric cords, and a plurality of lamps each mounted on the electric cords. Each of the lamps includes a lamp holder, and a lamp cover. The lamp cover has an inside formed with two receiving grooves. Thus, the distal ends of the electric cords are received in the receiving grooves of the lamp cover to prevent the distal ends of the electric cords from being exposed outwardly. In addition, the lamp cover has a periphery formed with a plurality of flattened edges to define a plurality of gaps between the lamp cover and the lamp holder to provide water draining and air ventilating effects.

The present invention provides a sulfone group-containing compound, an organic light emitting diode (OLED) device using the sulfone group-containing compound, and a method of fabricating the OLED device. The sulfone group-containing compound has formula as

wherein the bridging unit R is capable of connecting to three or more than three fluorene sulfur oxide units; and the unit R₁, R₂ and R₃ respectively connected to the fluorene sulfur oxide units are selected from alkyl chains, aromatic groups or heterocyclic groups. According to the present invention, the sulfone group-containing compound connects to three or more than three fluorene sulfur oxide units with a bridging unit to form a novel star-shaped molecular structure. The sulfone groups-containing compound combines electron affinity and transport properties of the fluorene sulfur oxide units and spatial characteristics of the star-shaped molecular structure, so that efficiency and lifetime of an OLED device using the same can be enhanced.

An organic light emitting diode (OLED) includes a first emitting material layer disposed adjacently to a first electrode and a second emitting material layer disposed adjacently to a second electrode. The first emitting material layer includes a first compound having high affinity to holes and a second compound of thermally activated delayed fluorescent material, and the second emitting material layer includes a fourth compound having high affinity to electrons and implementing triplet-triplet annihilation. Two emitting material layers having adjusted energy levels allow the OLED to lower its driving voltages and improve its luminous efficiency and luminous lifetime.

The present invention provides a light source heat-dissipation structure of a backlight module having: a light-source structure, the heat-dissipation base and a carrier. The light-source structure has leads, respectively. The heat-dissipation base has a supporting surface, an attachment surface and first through holes. The carrier has second through holes, and the carrier is attached to the attachment surface of the heat-dissipation base. The light-source structure is set on the supporting surface of the heat-dissipation base, and the leads of the light-source structure pass through the first through holes and the second through holes and then electrically connect with the carrier. Hence, the heat-dissipation base may directly support and thermally contact the light-source structure for relatively enhancing the heat-dissipation efficiency of the light-source structure.

The present disclosure relates to an organic light emitting diode that includes at least one emitting material layer including an anthracene-based host and a boron-based dopant, at least one electron blocking layer including an amine-based compound substituted with at least one polycyclic aryl group, and optionally at least one hole blocking layer including an azine-based compound or a benzimidazole-based compound. The organic light emitting diode has enhanced luminous efficiency as well as excellent luminous lifetime.

An organic light emitting diode (OLED) including at least one emitting material layer (EML) disposed two electrodes and comprising triazine-based delayed fluorescent material and boron-dipyrromethene-based fluorescent material and an organic light emitting device including the OLED is disclosed. The triazine-based delayed fluorescent material and the boron-dipyrromethene-based fluorescent material may be included in an identical EML or in adjacently disposed EMLs. The OLED can lower its driving voltage and improve its luminous efficiency by adjusting energy levels of the delayed fluorescent material and the fluorescent material.

The present disclosure relates to an organic light emitting diode that includes at least one emitting material layer including an anthracene-based host and a boron-based dopant, at least one electron blocking layer including an amine-based compound substituted with at least one fused aromatic or hetero aromatic ring, and optionally at least one hole blocking layer including an azine-based compound or a benzimidazole-based compound. The organic light emitting diode has enhanced luminous efficiency as well as excellent luminous lifetime.