Joled Inc.

Panasonic Intellectual Property Management Co., Ltd.

Mitsubishi Paper Mills Limited

Jdi Design and Development G. K.

Masakazu Takata

Hirotaka Nanno

Tamotsu Horiuchi

Masashi Goto

Shinichiro Ishino

Noriyuki Matsusue

Hidetoshi Miura

Kenji Hyodo

Toshiyuki Akiyama

Kazuchiyo Takaoka

Mineki Hasegawa

Munetoshi Irisawa

Yoshie Takahashi

Yasuhiro Sekimoto

Muneharu Sato

Masanori Natsuka

Koichi Sumioka

Kenji Tsuda

Takaaki Kozai

Naoki Hisamatsu

Takeshi Kamiya

An organic EL element including an anode, a first functional layer including organic material, disposed above the anode, a second functional layer including organic material, disposed on and in contact with the first functional layer, a light emitting layer disposed on and in contact with the second functional layer, and a cathode disposed above the light emitting layer. A highest occupied molecular orbital (HOMO) level of the organic material of the second functional layer has an energy level at least 0.2 eV lower than that of a HOMO level of the organic material of the first functional layer, and film thickness of the second functional layer is 15 nm or less.

Organic EL element, organic EL panel, and organic EL element manufacturing method

A functional layer forming ink used in forming a functional layer of the self-luminous element by a printing method, the ink including functional material dissolved or dispersed in a mixed solvent including solvents having different boiling points. When one or more solvents are selected from the solvents of the mixed solvent in descending order of boiling point until a mass ratio of the selection to the mixed solvent is a defined ratio or more, the one or more solvents in the selection are included in a solvent group of solvents that have a contact angle of 5&#xb0; or less with respect to a defined resin material.

Functional layer forming ink and self-luminous element manufacturing method

An ink used in forming a functional layer of a self-luminous element by a printing method, the ink including a functional material and a mixed solvent. The mixed solvent includes solvents each having different vapor pressures. The functional material is dissolved or dispersed in the mixed solvent. A solvent that has a lowest vapor pressure among the solvents has a viscosity of at least 53 mPa&#xb7;s, and a viscosity of the mixed solvent is 15 mPa&#xb7;s or less.

There is provided a manufacturing method for an organic electroluminescent panel that includes an organic electroluminescent element for each sub-pixel. The manufacturing method includes an application step of recoating a first organic material layer and a second organic material layer, which include principal components common to each other, to manufacture the organic electroluminescent element. At the application step, after the first organic material layer is applied, an insolubilization process is performed for the first organic material layer to provide a change to a structure of molecules included in the first organic material layer, and the second organic material layer is applied to the first organic material layer after the insolubilization process is performed.

Manufacturing method for organic electroluminescent panel and organic electroluminescent panel

A light emitting device includes: a base substrate; banks extending in a direction along a surface of the base substrate; and light emitting elements extending along the direction in groove regions defined by the banks. Each light emitting element includes one or more functional layers between a pair of electrodes. Within at least one of the groove regions: a sub-bank extends along the one direction and has a height equal to or smaller than a height of the banks; for each of the one or more functional layers in the groove regions, portions of each of the one or more functional layers on each side of the sub-bank are made of a same material; and a thickness of the one or more functional layers is smaller than a height of the sub-bank.

Organic light emitting device and method for manufacturing same

An organic EL display panel includes plural streaks of first partition wallson the upper side of an underlying layerin such a manner that each of the plural streaks of the first partition wallsextends along a first direction, plural streaks of second partition wallsthat are on the upper side of the underlying layerin such a manner that each of the plural streaks of the second partition wallsextends along a second direction intersecting the first direction, and each have an upper surfaceat a position lower than upper surfacesof the first partition walls, and a light emitting layerformed along the first direction on the upper side of the underlying layerand in gapsbetween the first partition wallsadjacent to each other in such a manner as to get over the plural streaks of the second partition walls. An organic EL display panel in which luminance unevenness is suppressed is thereby obtained.

Organic EL display panel and organic EL display device

A display panel including a substrate; first, second, and third lower electrodes; first and second column banks; first, second, and third organic light-emitting layers; and an upper electrode. When a first ink for forming the first organic light-emitting layer, a second ink for forming the second organic light-emitting layer, and a third ink for forming the third organic light-emitting layer are applied, ink-separating capability of the first column bank for separating the first ink and the second ink is lower than ink-separating capability of the second column bank for separating the second ink and the third ink, and ink-separating capability depends on: (i) a height of the first and second column banks, or (ii) liquid repellency of the first column bank against the first ink and the second ink and liquid repellency of the second column bank against the second ink and the third ink.

Display panel and method for manufacturing same

An organic electroluminescent panel includes a plurality of pixels and a plurality of banks. The pixels each include a plurality of subpixels. The subpixels each include an organic electroluminescent element that includes a first electrode, a second electrode, and an organic material layer that is provided between the first electrode and the second electrode. The banks define each of the subpixels in each of the pixels. The organic electroluminescent element in each of the subpixels is provided in a gap between adjacent two of the banks, and the following relational expression is satisfied:&#x2264;0.00017140.01514290.2914286

Organic electroluminescent panel and luminescent unit

An organic light emitting device including: a base substrate; column banks extending in one direction along a surface of the base substrate; and light emitting elements extending along the one direction in groove regions defined by the column banks, wherein each of the light emitting elements has one or more functional layers sandwiched between a pair of electrodes, and within at least one of the groove regions: a sub-bank extends along the one direction and has a height equal to or smaller than a height of the column banks, and for each of the one or more functional layers therein, portions thereof on either side of the sub-bank are made of the same material.

A solution contains a functional material for constituting a function layer, and a solvent. The solvent contains a high-boiling-point solvent composed of one or more solvent components having a boiling point of not less than 200&#xb0; C. The high-boiling-point solvent has a viscosity of from 13 mPa&#xb7;s to 25 mPa&#xb7;s, inclusive, and a surface tension of from 33 mN/m to 37 mN/m, inclusive.

Solution for forming function layer contained in organic light emitting element and method for manufacturing organic light emitting element

An organic EL display panel includes plural streaks of first partition walls juxtaposed on the upper side of an underlying layer in such a manner that each of the plural streaks of the first partition walls extends along a first direction, plural streaks of second partition walls that are juxtaposed on the upper side of the underlying layer in such a manner that each of the plural streaks of the second partition walls extends along a second direction intersecting the first direction, and each have an upper surface at a position lower than upper surfaces of the first partition walls, and a light emitting layer formed along the first direction on the upper side of the underlying layer and in gaps between the first partition walls adjacent to each other in such a manner as to get over the plural streaks of the second partition walls.

A method of forming a hole transport layer in which an amount of ink per unit surface area to be applied to a plurality of groove regions is set so as to decrease in an order R, G, B. Prior to applying the ink, a nozzle head is scanned across while applying only solvent to each of the groove regions. At this time, an amount of the solvent to be applied to the groove regions is set so as to increase in the order R, G, B.

Method for forming functional layer of organic light-emitting device and method for manufacturing organic light-emitting device

An ink jet device includes a plurality of ink jet heads each including an ink housing unit that houses therein ink, a pressure application unit that ejects a droplet of the ink by applying pressure to the ink, and a nozzle through which the droplet of the ink is ejected, wherein with respect to at least one of the plurality of ink jet heads, a preliminary drive operation and a main drive operation are performed, the preliminary drive operation is an operation of pushing the ink toward an outer edge of the nozzle to the extent that the droplet of the ink is not ejected through the nozzle, and the main drive operation is an operation of ejecting the droplet of the ink through the nozzle after performance of the preliminary drive operation.

Inkjet device, and method for manufacturing organic EL device

An ink jet device includes: an ink jet head including a nozzle through which ink droplet is ejected by applying voltage to piezoelectric element; and an ejection control unit controlling ink droplet ejection amount by varying voltage, voltage waveform of the voltage includes: preliminary vibration wave form part for preliminary drive operation of pushing ink toward outer edge of the nozzle to the extent that the droplet is not ejected; and main vibration waveform part for main drive operation of ejecting the droplet through the nozzle after the preliminary drive operation, the ejection control unit performs the preliminary and main drive operations according to the preliminary vibration waveform part and the main vibration waveform part, respectively, and proportion of displacement amount X of the voltage for the preliminary drive operation to displacement amount Y of the voltage for the main drive operation is set to 20%&#x2266;X/Y&#x2266;40%.

Inkjet device and manufacturing method for organic el device

An inkjet device includes an inkjet head having a pressure applier applying voltage to ink contained in a ink reservoir, by executing a standby drive operation of applying a standby oscillation to the ink and a main drive operation of applying a main oscillation to cause the ink to be discharged from nozzles, such that the start of main drive operation execution is within a period where the displacement in the standby oscillation is oriented toward the interior of the nozzles in order to produce interference between the standby oscillation.

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Tokyo, Japan

Masakazu Takata