Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Joled Inc.

Diepex Co., Ltd.

Takayuki Takeuchi

Kenji Harada

Seiji Nishiyama

Takahiro Komatsu

Satoru Ohuchi

Shinya Fujimura

Norishige Nanai

Hirofumi Fujita

Kei Sakanoue

Yasuhiko Horio

Yoshiaki Tsukamoto

Hiroyuki Hase

Masumi Hattori

Nobuaki Kambe

Jun Terao

Norihisa Mino

Ryuuta Yamada

Tetsuro Kondoh

Yasuo Kitaoka

Osamu Inoue

Hiroshi Kawano

Takahiro Kawashima

Tohru Saitoh

Naohide Wakita

Kenichi Nendai

Munenori Fujimura

Koichi Kugimiya

Shuichiro Yamaguchi

Kenji Iijima

Sadayoshi Hotta

Kazunori Komori

Hiromi Tokunaga

Kengo Shiiba

Emiko Kawahara

Tomohiro Okuzawa

Toshifumi Satoh

Hitoshi Uchi

Hirotaka Furukawa

Masahiro Yamaoka

A pressed crease-forming member includes a strip-shaped member having a crease-forming portion formed with three or a larger-than-three odd number of ribs extending in the longitudinal direction of the strip-shaped member with one of the ribs located at the widthwise center of the crease-forming portion and each half of the remaining even number of ribs arranged on either side of the center rib. At least the top of the center rib, namely, the rib located at the widthwise center of the crease-forming portion, is chamfered. Grooves are formed between the adjacent ribs. The ribs are arranged such that the tops of the ribs are formed, as a whole, into a convex shape. The bottom of each groove is recessed beyond the tops of the ribs on both sides of the groove.

Pressed crease-forming member

An organic electroluminescence display panel includes a thin-film transistor layer above a substrate. A planarizing film is above the thin-film transistor layer with contact holes being formed in the planarizing film. A bank is above the planarizing film. The bank includes openings arranged in rows and columns that define regions for forming organic electroluminescence elements. Each opening is between a pair of adjacent concaves in one of the columns. The concaves are formed in an upper surface of the bank and sunken into the contact holes. The upper surface of the bank has repellency. A light-emitting layer is formed in each opening by ejecting drops of an ink from nozzles of an inkjet head into the openings while moving the inkjet head relative to the substrate. The nozzles further eject drops of the ink into the concaves when above the concaves for ejecting the drops of the ink through every nozzle.

Organic EL display panel and method of manufacturing the same

A display panel where, within at least one aperture, an inter-layer insulation layer includes a planar region having a planar surface and a protruding region having a protruding surface relative to the planar region located wherever two or more of a gate electrode, a drain electrode, a source electrode, a first power supply signal wiring, and a second power supply signal wiring intersect, and an insulation film covers at least part of the protruding region and does not cover at least part of the planar region.

Display panel having an inter-layer insulation layer with planar and protruding regions

An organic EL element comprises: an anode; a cathode; a functional layer including at least a light-emitting layer; a hole injection layer disposed between the anode and the functional layer; and a bank. The hole injection layer contains tungsten oxide. Tungsten atoms constituting the tungsten oxide include both tungsten atoms with a valence of six and tungsten atoms with a valence less than six. The hole injection layer includes a crystal of the tungsten oxide. A particle diameter of the crystal is on an order of nanometers. The hole injection layer has a recessed portion whose inner side surface has an upper edge that is one of (i) aligned with part of a lower edge of the bank, the part being in contact with the light-emitting layer, and (ii) in contact with a bottom surface of the bank.

Organic electroluminescence element and method of manufacturing thereof

An organic light-emitting element comprising: an anode; a cathode; banks; a functional layer between the anode and the cathode; and a hole injection layer between the anode and the functional layer. The functional layer includes one or more sublayers including a light-emitting sublayer defined by the banks and that contains an organic material. The hole injection layer comprises tungsten oxide, includes an occupied energy level that is approximately 1.8 electron volts to approximately 3.6 electron volts lower than a lowest energy level of a valence band of the hole injection layer in terms of a binding energy, has a surface facing the functional layer, and has a recessed structure such that a portion of the surface overlapping with the light-emitting sublayer is located closer to the anode than other portions. The recessed structure has a recessed portion whose inner surface is in contact with the functional layer.

Organic electroluminescence element

An organic light-emitting element comprising: an anode; a cathode; banks; a functional layer between the anode and the cathode; and a hole injection layer between the anode and the functional layer. The functional layer includes at least a light-emitting sublayer defined by the banks and that contains an organic material. The hole injection layer comprises tungsten oxide and includes a crystal of the tungsten oxide, whose particle diameter is on an order of nanometers. Tungsten atoms constituting the tungsten oxide include both tungsten atoms with a valence of six and tungsten atoms with a valence less than six. The hole injection layer has a surface facing the functional layer, and a portion of the surface overlapping with the light-emitting sublayer is located closer to the anode than other portions, thereby forming a recessed structure having a recessed portion whose inner surface is in contact with the functional layer.

In an organic EL element, a bank is formed on a hole injection layer so as to surround light-emitting layer. The hole injection layer is formed with a tungsten oxide thin film, and has, in an electronic state thereof, an occupied energy level 1.8 eV to 3.6 eV lower than the lowest energy level of a valence band of the hole injection layer. The hole injection layer has a recessed portion in an upper surface thereof. An inner surface of the recessed portion is in contact with a functional layer (light-emitting layer). the inner side surface of the recessed portion includes an upper edge that is one of aligned with part of a lower edge of the bank, the part being in contact with the functional layer, and in contact with a bottom surface of the bank.

Organic EL element

An organic EL element comprises: an anode; a cathode; a functional layer that is disposed between the anode and the cathode and includes at least a light-emitting layer; a hole injection layer disposed between the anode and the functional layer; and a bank. The hole injection layer contains tungsten oxide, and has a recessed portion. A UPS spectrum of the hole injection layer, obtained from a UPS measurement, has a protrusion appearing near a Fermi surface and within a region corresponding to a binding energy range lower than a top of a valence band. The tungsten oxide contained in the hole injection layer satisfies a condition, determined from an XPS measurement, that a ratio in a number density of atoms other than tungsten atoms and oxygen atoms to the tungsten atoms does not exceed approximately 0.83.

Organic EL element, display device, and light-emitting device

A field-effect transistor includes a semiconductor layer () having a portion functioning as a channel region. The semiconductor layer () includes, as its constituent components, a plurality of electrically conductive microparticles (), organic semiconductor molecules () bonded to the microparticles () so as to link the microparticles to one another (), and cyclic molecules. Each of the organic semiconductor molecules () includes a &#x3c0;-electron conjugated chain as its main chain, and the &#x3c0;-electron conjugated chain is insulated by cyclic molecules.

Field effect transistor, method of manufacturing the same, and electronic device using the same

An organic EL element comprising: an anode; a cathode; banks; a functional layer between the anode and the cathode, the functional layer including one or more sublayers including a light-emitting sublayer, the light-emitting sublayer defined by the banks and containing an organic material; and a hole injection layer between the anode and the functional layer, wherein the hole injection layer comprises tungsten oxide. An Ultraviolet Photoelectron Spectroscopy (UPS) spectrum, obtained from a UPS measurement, has a protrusion appearing near a Fermi surface and within a region corresponding to a binding energy range lower than a top of a valence band. The tungsten oxide contained in the hole injection layer satisfies a condition, determined from an X-ray Photoelectron Spectroscopy (XPS) measurement, that a ratio in a number density of atoms other than tungsten atoms and oxygen atoms to the tungsten atoms does not exceed approximately 0.83.

Organic light-emitting elements each have the following structure: a transparent anode, a functional layer including a charge injection layer and an organic light-emitting layer, and a transparent cathode are layered on a substrate in the stated order; a bank defines a formation area of the organic light-emitting layer; the charge injection layer is a metal oxide layer formed by oxidizing an upper surface portion of the anode composed of the metal layer, and a portion of the charge injection layer that is positioned under the area is depressed so as to form a recess; and the upper peripheral edge of the recess is covered with a covering portion of the bank.

Light emitting element, method for manufacturing same, and light emitting device

Each of organic light-emitting elementsandincludes an anode, a functional layer including a hole-injection layer, a hole-transport layer and an organic light-emitting layer, and a cathode layered on a substrate in the stated order. Also, a bank defines a formation area of the organic light-emitting layer. Here, the hole-injection layer is a metal oxide layer formed by oxidizing an upper surface portion of the anode composed of the metal layer. Also, a portion of the hole-injection layer that is positioned under the area is depressed so as to form a recess, and upper peripheral edge of the recess is covered with a portion of the bank.

A light emitter and method for manufacturing a light emitter. The light emitter includes a first electrode, a charge injection transport layer, a light-emitting layer, and a second electrode that are layered in this order. At least the light-emitting layer is defined by bank. The charge injection transport layer includes a recessed portion having an inner bottom surface in contact with a bottom surface of the light-emitting layer and an inner side surface continuous with the inner bottom surface and in contact at least partly with a side surface of the light-emitting layer. The inner side surface has a lower edge continuous with the inner bottom surface, and an upper edge is aligned with a portion of a bottom periphery of the bank, the portion being in contact with the light-emitting layer or in contact with a bottom surface of the bank.

Light-emitting element including a charge injection transport layer having a recess portion for accumulating ink, and display device and method for manufacturing thereof

A light emitter and a method of manufacturing a light emitter. The light emitter includes a first electrode, a charge injection transport layer, a light-emitting layer, and a second electrode that are layered in this order. At least the light-emitting layer is defined by a bank that has at least one liquid-repellent surface. The charge injection transport layer is principally composed of a metal compound that is more liquid-philic than the surface of the bank. The charge injection transport layer includes a recessed structure so that in a region defined by the bank, the charge injection transport layer is lower than a bottom surface of the bank.

Light-emitting element including a charge injection transport layer that includes a dissolvable metal compound, and display device and method for manufacturing thereof

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Osaka, Japan

Takayuki Takeuchi