Dai Nippon Printing Co., Ltd.

Hiroyuki Shirogane

Masaru Kobayashi

Kenichi Kuba

Hirofumi Nakajima

Shinichi Handa

Toshihiko Takeda

Shigeru Morito

Masayuki Nagashima

Tsutomu Uchimi

A method for the formation of a luminescent layer having a uniform thickness in a desired pattern and an organic electroluminescent device that can realize high-quality display and is highly reliable. The luminescent layer is formed by providing a blanket having a resin film having a surface tension of not less than 35 dynes/cm as a surface layer and an ink for a luminescent layer, having a viscosity (ink temperature 23&#xb0; C.) in the range of 5 to 200 cP as measured at a shear rate of 100/sec, and containing a solvent having a surface tension of not more than 40 dynes/cm and a boiling temperature in the range of 150 to 250&#xb0; C., filling the ink into cells in a gravure form, allowing the blanket to receive the ink from the cells, and transferring the ink on the blanket onto a luminescent layer forming face.

Method for luminescent layer formation and organic electroluminescent device

Disclosed is an EL element in which the rigidity and thermal expansion of the whole EL element is homogeneous, the spacing between film substrates provided respectively on both sides of the EL element can be kept constant, and the whole EL element is flexible. The EL element comprises a first film substrate, an EL part, and a sealant layer, the EL part comprising a first electrode, an EL layer, and a second electrode and being provided on a part of a surface of the first film substrate, the sealant layer being provided to cover the EL part and to cover the EL part-free part of the surface of the first film substrate in such a manner that the sealant layer covering the EL part is contiguous with the sealant layer covering the EL part-free part of the surface of the first film substrate.

EL and display device having sealant layer

A printing unit includes a plurality of ink supply members for supplying inks different from each other to a printing area or printing area-like portion, and a plurality of detecting systems, each detecting an amount of the corresponding ink accumulated on the printing area or printing area-like portion. A control system controls the plurality of ink supply members to regulate an amount of ink supplied by each of the plurality of ink supply members so as to bring the amount of the corresponding ink accumulated into agreement with a predetermined value.

Printing unit and manufacturing line for manufacturing flexible organic EL display

A luminescence display panelincludes: a flexible transparent substrate; a transparent electrodeformed on the transparent substrate, over a luminescence region and a non-luminescence region; and auxiliary electrodesandformed on the transparent electrode, over the non-luminescence region. Electric insulation layers, andare formed over the non-luminescence region of the transparent electrode, so as to cover the auxiliary electrodesand. An organic luminescence partis formed on the transparent electrode, at least over the luminescence region. A rear electrodeis formed on the organic luminescence part

Luminescence display panel displaying a predetermined pattern

There is provided an electroconductive paste composition that can form a coating film having satisfactory thickness by single coating work. The electroconductive paste composition can form bumps having satisfactory height even by a smaller number of times of coating than that in the prior art technique. The electroconductive paste composition comprises a phenolic resin, a melamine resin, an electroconductive powder, a solvent, and a bump forming aid comprising a monohydric alcohol having a terminal methoxy group and having at least one ether bond. The electroconductive paste composition can be used in a printed wiring board.

Electroconductive paste composition and printed wiring board

The present invention is a method of manufacturing a light emitting display panel, which includes a laminated structure formed by laminating at least a flexible base layer, a first electrode layer, an EL layer, a second electrode layer and a flexible sealing layer in that order. The flexible base layer is provisionally attached to a rigid flat plate, and thereafter supplied to a main manufacturing step of the light emitting display panel. According to the feature, no significant unevenness in the thicknesses of layers formed on or above the flexible base layer is generated. Therefore, a light emitting display panel whose light emitting strength is uniform can be produced.

Method of manufacturing a light emitting display panel and a light emitting display panel

A printing unit include a plurality of ink supply members for supplying inks different from each other to a printing area or printing area-like portion, and a plurality of detecting systems, each detecting an amount of the corresponding ink accumulated on the printing area or printing area-like portion. A control system controls the plurality of ink supply members to regulate an amount of ink supplied by each of the plurality of ink supply members so as to bring the amount of the corresponding ink accumulated into agreement with a predetermined value

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Tokyo-to, Japan

Hiroyuki Shirogane