Futaba Corporation

Futaba Denshi Kogyo K.k.

Shigeru Hieda

Hisamitsu Takahashi

Satoshi Tanaka

Yoshihisa Tsuruoka

Yukio Ogawa

Yoshihisa Yonezawa

Toshio Miyauchi

Youhei Fujimura

Yuji Saito

The present invention provides a water-trapping agent disposed inside a hermetically sealed container. The water-trapping agent comprises an organometallic compound as represented by Formula 1 as a drying agent component, and is obtained by a process comprising mixing the organometallic compound with organic solvent, and at least partially substituting the organic solvent with viscous replacement material: wherein R is selected from the group consisting of alkyl group, alkoxy group, alkenyl group, aryl group, cycloalkyl group, heterocyclic group and acyl group, M is a trivalent metal atom, and n is an integer of 1 or above.

Water-trapping agent and organoelectronic device comprising the same

A water-capturing or drying agent placed in a hermetically sealed field light emission device for maintaining stable light emission of the light emission device not susceptible to moisture and oxygen for long period of time. The drying agent comprises a compound of polymer formed by bonding M constituting a plurality of organometallic compounds wherein M is a trivalent metal atom with an oxygen molecule. The drying agent is placed in the hermetically sealed container, thereby protecting the field light emission device from being adversely affected by damage from trace amounts of moisture permeating from outside the hermetically sealed container and/or adhered to the inner surface thereof.

Drying agent and field light emission device using the same

A thin-profile organic EL device with a high degree of reliability is provided. The anode, the organic layer and the light transmissible-type cathode are laminated on the substrate and the inorganic water-barrier layer are laminated thereon, and then a UV rays-curable type water-capturing agent comprising a UV rays-curing agent and a water-absorbing agent is cured to bond to the sealing substrate instead of an adhesive layer. The UV rays-curing agent comprises an acrylic monomer, initiator and accelerator. The UV rays-curable type sealing agent is placed to the outer peripheral portion of the UV rays-curable type water-capturing agent to be cured. The emission of the organic layer is transmitted upward via the cathode, UV rays-curable type water-capturing agent and the sealing substrate. The UV rays-curable type water-capturing agent can be formed in a desired thickness and pattern by applying it and irradiating with UV-rays, thereby making it possible to produce a low-profile organic EL device in large quantities with a high degree of reliability and without damaging the organic layer which is not resistant to water.

Water-absorbing agent for organic EL device and organic EL device

A water-capturing agent capable of inhibiting the generation and growth of a darkspot and an organic EL device including the water-capturing agent are provided. The organic EL device uses the water-capturing agent comprising a compound illustrated by the chemical structural formula (1);wherein R and R' are independently a substituent selected from the group consisting of an alkyl group, aryl group, cycloalkyl group, alkoxy group, acyl group and heterocyclic group having an unsaturated bond and one or more of a hydrogen atom and a carbon atom, or a substituent formed by substituting at least one of a hydrogen atom of said group with a halogen atom, and a central atom M is a metal having coordination number of six.

Water-capturing agent and organic EL device

A novel water-scavenging agent of the present invention comprising a compound of formula (I) as a primary component can be dissolved in a polar solvent and coated by a screen printing method, and the inventive organic EL device comprising same can maintain stable luminescent characteristics for a prolonged time:wherein,

Water-scavenging agent for an organic electroluminescent device and organic electroluminescent device comprising same

An organic EL device having a drying medium capable of suppressing the growth of a dark spot equipped with a water-capturing medium layer for chemically capturing water placed on a water-capturing medium holding layer. The organic EL device is comprised of a sealed container having a glass substrate and a sealing cap bonded to the glass substrate. The sealed container is provided with a light emitting region formed on the substrate which is formed of organic EL material layers placed between a pair of opposite anode and cathode electrodes. The sealed container further includes a water-capturing medium holding layer provided on an inner surface of the container spaced apart from the light emitting region and a water-capturing medium holding layer.

Organic EL element

Drying agent

An organic EL element maintaining emission characteristics for long periods of time comprising: a laminate having a structure such that organic EL material layers are sandwiched between a pair of opposite electrodes; a sealed container into which is placed said laminate; and a drying member which is placed in said sealed container and prevents contamination of said organic EL material layers by moisture, wherein said drying member is formed of an organometallic compound. The organometallic compound adsorbs chemically water and functions as an adhering agent for other physical drying agents and chemical drying agents and has no adverse effect on the organic EL element and can prevent growth of a dark spot.

An organic EL device capable of ensuring reliable and easy insulation between electrodes during patterning of the electrodes. The organic EL device includes an organic EL layer including a luminous layer and arranged between anodes and cathodes, as well as electrode separation sections arranged so as to separate the anodes from each other while insulating them from each other. The electrode separation sections each include a plurality of insulating ribs juxtaposed to each other at predetermined intervals and arranged on the anodes or in proximity to a periphery of the,anodes. This permits the interval between the ribs juxtaposed to each other to prevent the material for the second electrodes from advancing through the top surface of the ribs to the side surface thereof, to thereby ensure positive insulation between the second electrodes.

Organic EL device and method for manufacturing same

An organic electroluminescent display device capable of permitting upper electrodes of a fine pattern to be formed and exhibiting increased durability. Ribs are spaced at predetermined intervals on transparent electrodes arranged in the form of a film on a lower transparent substrate. An organic layer is formed between each adjacent two of the ribs and an upper electrode is deposited all over the transparent electrodes. A portion of the upper electrode formed on each of the ribs is removed by scraping, rubbing or the like, resulting in the upper electrode being formed on only each of the organic layers. A cap layer may be provided on the upper electrode as required.

Growing community of inventors

Mobara, Japan

Shigeru Hieda