33results about How to "Extended life span" patented technology

Provides herein are a compound capable of improving light emitting efficiency, stability, and lifespan of the element, an organic element using the same, and an electric device for the same.

The present invention concerns a flexible, tubular device e.g. a bellows with an internal diameter up to 60 millimeters, said device comprising one or more corrugated convolutions ( 2 ), said convolutions having an overall bell-like shape with rounded top portions (T) and rounded bottom portions (B,B'). The novel aspects involve that the curvature of the outside surface of the convolutions ( 2 ) is numerically smaller at the top portions (T) than at the bottom portions (B,B'), said curvature being derived from a curve ( 6 ) defined as the intersection of the outside surface ( 4 ) of the device and a plane through the longitudinal axis ( 8 ) of the device, as well as they involve that the curvature of said curve changes sign only once at a change position (P,P') located between a top portion (T) and an adjacent bottom portion (B,B''), and that the length of a first section ( 7 ) on the curve ( 6 ) is at least 10% longer than the length of a second section ( 9 ) on the curve, said first section ( 7 ) extending from one change position (P) to an adjacent change position (P') via a top portion (T), and said second section ( 9 ) extending from one change position (P) to an adjacent change position (P') via a bottom portion (B,B'). This provides an improved design with increased durability due to increased flexibility at lower stresses, compared to the prior art.

A compound for an organic optoelectronic device represented by Chemical Formula 1wherein, in Chemical Formula 1, variables A, Y1 to Y4, X1, m, R1 to R4, L1 to L3, n1 to n3, Ar1 and Ar2 are described in the specification.

An organic light emitting diode (OLED) and a method of fabricating the same, in which an intermediate layer is formed between a first hole transport layer (HTL) and a second hole transport layer to facilitate supply of current to an emission layer (EML), thereby increasing the luminance and life span of the OLED. The OLED includes a first electrode, a hole injection layer (HIL) disposed on the first electrode, a first hole transport layer disposed on the hole injection layer, an intermediate layer disposed on the first hole transport layer, a second hole transport layer disposed on the intermediate layer, an emission layer disposed on the second hole transport layer, and a second electrode disposed on the emission layer.

An organic light-emitting device includes a substrate; a first electrode; a second electrode facing the first electrode; an organic layer disposed on the first electrode; and an emitting layer interposed between the organic layer and the second electrode. The concentration of inorganic impurities within the organic layer is 1000 ppb or less. The organic light-emitting device has high light-emitting efficiency, low driving voltage, high brightness, and long life span.

The present invention relates to a process for reducing heavy tail fraction formation and catalyst loss in a continuous hydroformylation process in which an olefin or olefin mixture is reacted with carbon monoxide and hydrogen in a reactor group (1) in the presence of a rhodium complex catalyst comprising at least one organobisphosphite ligand to produce an aldehyde. The process includes adding an epoxide to the reaction mixture and continuously or intermittently removing an early heavy tail fraction.

The invention relates to the technical field of mold processing, and discloses a laser spraying treatment method for the surface of a cold stamping mold. The surface coating and surface modification composite treatment technologies are used to change the shape, chemical composition, organizational structure and stress state of the mold surface, so as to improve the The role of mold quality and life, using laser spraying, using cermet material, the coating material has the characteristics of high reliability, good consistency, fast response, spraying cermet coating on the mold to strengthen its surface, It can improve its hardness, viscosity resistance, impact resistance, wear resistance and thermal fatigue resistance, and has a strong repairing effect.