Patents by Inventor Kenichi Nendai
Kenichi Nendai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20170133443Abstract: An organic electroluminescent (EL) display panel which includes: a board; a plurality of planarizing films planarizing unevenness caused by a plurality of driver circuits; a plurality of first banks disposed on surfaces of the plurality of planarizing films; a plurality of anode films disposed between adjacent first banks among the plurality of first banks; and a plurality of second banks on upper portions of the plurality of first banks.Type: ApplicationFiled: November 9, 2016Publication date: May 11, 2017Applicants: JOLED INC., JAPAN DISPLAY INC.Inventor: Kenichi NENDAI
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Publication number: 20170084632Abstract: A display device including: a lead wiring layer pattern 207, made from metal, that extends outside a region 10A on a substrate in which a light-emitter is present; a passivation layer 216; a contact hole 216a in the passivation layer 216 outside the region 10A in a position over the lead wiring layer pattern 207 in plan view; a connecting wiring layer pattern 237 that is continuous across the passivation layer 216, an inner circumference of the contact hole 216a, and the lead wiring layer pattern 207 in the contact hole 216a; a sealing layer 217 covering a portion of the connecting wiring layer pattern 237 in the contact hole 216a; and an upper sealing layer pattern 219 covering the sealing layer pattern 217 that is above the connecting wiring layer pattern 237.Type: ApplicationFiled: April 23, 2015Publication date: March 23, 2017Inventors: Yasuharu SHINOKAWA, Kenichi NENDAI, Takashi OSAKO
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Publication number: 20170062479Abstract: A display device including: a lead wiring layer pattern 207, made from metal, that extends outside a light emission region on a substrate; a passivation layer 216 covering the lead wiring layer pattern, a contact hole 216a in the passivation layer outside the light emission region; a connecting wiring layer pattern 237 that is continuous across the passivation layer, an inner circumference of the contact hole, and the lead wiring layer pattern in the contact hole; an electrically-conductive sealing layer pattern 217 on the connecting wiring layer pattern, covering a portion of the connecting wiring layer pattern in the contact hole; an electrically-conductive upper sealing layer pattern 219 covering and in contact with a portion of the sealing layer pattern; and a contact prevention layer pattern 218, 236 between the electrically-conductive upper sealing layer pattern and a periphery of the sealing layer pattern.Type: ApplicationFiled: April 23, 2015Publication date: March 2, 2017Inventors: Yasuharu SHINOKAWA, Kenichi NENDAI, Takashi OSAKO
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Publication number: 20160351637Abstract: Light emitters are two-dimensionally disposed along a main surface of the substrate. The light emitters each include: a first electrode; an organic light-emitting layer; an intermediate layer; a charge transport layer; and a second electrode. Such layers are disposed in the stated order with the first electrode closest to the substrate. The intermediate layer contains a fluoride of an alkali metal or a fluoride of an alkaline earth metal. The charge transport layer contains an organic material doped with an alkali metal or an alkaline earth metal. The light emitters are partitioned from one another by first banks extending in one direction along the main surface of the substrate and second banks extending in a direction intersecting the one direction. Surface portions of the first banks facing the light emitters have greater liquid repellency than surface portions of the second banks facing the light emitters.Type: ApplicationFiled: February 13, 2015Publication date: December 1, 2016Applicant: JOLED INC.Inventors: Jun HASHIMOTO, Hideyuki SHIRAHASE, Kenichi NENDAI
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Publication number: 20160293681Abstract: An organic EL display panel including: a substrate; banks linearly extending along one direction above the substrate; pixel electrodes spaced away from one another along the one direction, in each of first and second spaces among spaces defined by the banks; a light-emitting layer covering each pixel electrode in each of the first and second spaces; and a sub-bank crossing the one direction at least in the first space, and when defining each light-emitting layer portion covering a pixel electrode as a light-emitting portion and defining each area between light-emitting portions adjacent in the one direction as a non-light-emitting portion, a positive integer N exists for which the following holds true: among Nth non-light-emitting portions counting from one side along the one direction, the Nth non-light-emitting portion in the first space has the sub-bank and the Nth non-light-emitting portion in the second space does not have the sub-bank.Type: ApplicationFiled: October 3, 2014Publication date: October 6, 2016Applicant: JOLED INC.Inventors: Yasuharu SHINOKAWA, Kenichi NENDAI, Hiroyoshi TAKEZAWA
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Publication number: 20160172424Abstract: An organic light-emitting device including a substrate, first electrodes, first banks extending in a first direction, second banks extending in a second direction, organic functional layers each including an organic light-emitting layer, and a second electrode. The second banks include an organic fluorine compound, and have portions intersecting with and disposed above the first banks. Each of the first banks includes an organic bank layer including an organic material and an inorganic bank layer disposed on the organic bank layer. For each of the first banks, an uppermost surface thereof is a surface of the inorganic bank layer included therein.Type: ApplicationFiled: December 9, 2015Publication date: June 16, 2016Applicant: JOLED INC.Inventors: Nobuto HOSONO, Kenichi NENDAI
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Publication number: 20160172423Abstract: An organic EL display panel including: a substrate; a first lower electrode and a second lower electrode disposed over the substrate with a gap therebetween in a first direction; a wall separating a space above the first lower electrode and a space above the second lower electrode from one another; organic light-emitting layers respectively disposed in the spaces; and an upper electrode extending over the organic light-emitting layers. The wall includes a first portion disposed over the gap and two second portions each of which is disposed over a different one of the first lower electrode and the second lower electrode. The first portion is between the two second portions in the first direction, and at least a part of a bottom face of the first portion is positioned higher than a bottom face of the second portion.Type: ApplicationFiled: December 8, 2015Publication date: June 16, 2016Applicant: JOLED INC.Inventor: Kenichi NENDAI
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Patent number: 9356252Abstract: An electronic device includes a substrate, a first conductive layer disposed over the substrate, an organic insulating layer, including an organic material, disposed over the first conductive layer and having an aperture exposing a portion of the first conductive layer, a second conductive layer, which is metallic, covering a top face of the organic insulating layer, an inner circumferential face that faces the aperture in the organic insulating layer, and the exposed portion of the first conductive layer, and an intermediate layer that includes an oxide or a nitride, disposed only between the second conductive layer and the inner circumferential face that faces the aperture in the organic insulating layer. The first conductive layer and the second conductive layer are in contact at the bottom face of the aperture in the organic insulating layer.Type: GrantFiled: January 10, 2013Date of Patent: May 31, 2016Assignee: JOLED INC.Inventors: Yuuki Abe, Kenichi Nendai, Shuhei Yada, Kou Sugano
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Publication number: 20160133869Abstract: A display device including: a substrate; first and second lower electrodes disposed with a gap therebetween; a partition wall containing resin material; first and second organic functional layers; and an upper electrode. The bottom face of the partition wall includes a first portion and two second portions. A height difference between the first portion and the second portion is no more than 30% of a height difference between the first portion and a maximum height point of a top face of the partition wall. The second portions each have a width no more than 20% of an overall width of the partition wall. The first portion corresponds to a part of the partition wall corresponding to the gap. The second portions respectively correspond to parts of the partition wall covering a portion of the first lower electrode and a portion of the second lower electrode.Type: ApplicationFiled: November 9, 2015Publication date: May 12, 2016Applicant: JOLED INC.Inventor: Kenichi NENDAI
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Patent number: 9153791Abstract: An organic EL display panel offering improved luminance includes: a substrate; pixel electrodes arranged in rows and columns; an insulating film coating the confronting edges of pixel electrodes adjacent in a column direction; banks each elongated in the column direction over a gap between pixel electrodes adjacent in the row direction; a hole transport layer in a gap between the banks; an organic light-emitting layer over the hole transport layer; and a common electrode over the organic light-emitting layer. Light is emitted from a first light-emitting portion and second light-emitting portions of the light-emitting layer. The first light-emitting portion is a portion above the pixel electrodes excluding where the insulating film is disposed. The second light-emitting portions are portions above both the pixel electrodes and the insulating film.Type: GrantFiled: December 22, 2011Date of Patent: October 6, 2015Assignee: JOLED INCInventors: Kaori Akamatsu, Kenichi Nendai, Seiji Nishiyama, Naoko Mizusaki
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Patent number: 9123682Abstract: A light-emission device includes a substrate and a G light-emission layer; an R light-emission layer, a B light-emission layer, and a wiring layer made of metal that are each arranged above the substrate. Each of the G light-emission layer, the R light-emission layer, and the B light-emission layer contains light-emission material. An amount of heat that the B light-emission layer generates upon light emission is greater than an amount of heat that the G light-emission layer generates upon light emission. Further, the B light-emission layer directly faces the wiring layer at a facing edge portion.Type: GrantFiled: April 17, 2013Date of Patent: September 1, 2015Assignee: JOLED INC.Inventors: Naoko Mizusaki, Kenichi Nendai
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Patent number: 9111892Abstract: A organic EL display panel includes an inter-layer insulation film, a pixel electrode, auxiliary wiring, a partition layer, an organic light-emitting layer, and a common electrode. The inter-layer insulation film has at least one paired concave portion and non-concave portion disposed in a region over the auxiliary wiring, a top face of the concave portion being concave with respect to a top face of the non-concave portion, and the auxiliary wiring includes a part over the concave portion and a part over the non-concave portion, a top face of the part over the concave portion being concave with respect to a top face of the part over the non-concave portion.Type: GrantFiled: November 20, 2012Date of Patent: August 18, 2015Assignee: JOLED INC.Inventors: Kenichi Nendai, Takashi Osako, Naoko Mizusaki
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Patent number: 9103017Abstract: An organic display panel having a high luminance, and including an organic light emitting element that includes a bottom electrode, a hole-injection layer, an organic light emitting layer, and a top electrode layered in the stated order on a substrate. The bottom electrode is composed of a material that is aluminum, silver, or an alloy including at least one of aluminum and silver. The hole-injection layer contains an oxide of a transition metal. The organic light emitting element further includes a mixed oxidized thin film interposed between and in contact with the bottom electrode and the hole-injection layer, the mixed oxidized thin film being composed of an oxidized mixture of the same material as the material in the bottom electrode and the same transition metal as the transition metal in the hole-injection layer.Type: GrantFiled: November 7, 2012Date of Patent: August 11, 2015Assignee: JOLED INC.Inventors: Yuuki Abe, Kenichi Nendai, Naoko Mizusaki
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Patent number: 9089036Abstract: A light-emitting device comprises a substrate, a light-emitting layer, a wire formed on the substrate and supplying electric power to the light-emitting layer; a transition metal oxide layer formed on the substrate and over the wire; a bank formed on the transition metal oxide layer defining an opening over the wire; an interception layer formed on a portion of the transition metal oxide layer that is exposed through the opening and intercepting migrating fluorine; an organic layer formed on the interception layer and doped with an alkali metal; and an electrode formed on the organic layer, electrically connected to the wire via the organic layer, the interception layer, and the transition metal oxide layer, and providing the electric power supplied by the wire to the organic layer.Type: GrantFiled: November 8, 2012Date of Patent: July 21, 2015Assignee: JOLED INCInventors: Takuya Satoh, Kenichi Nendai
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Patent number: 9006718Abstract: A organic EL display panel and similar are provided so as to constrain a gradual increase in contact resistance between a common electrode and a power supply layer. In a panel including a substrate, a pixel electrode, a power supply layer formed with separation from the pixel electrode, a resin partition layer having an aperture over the power supply layer and over the pixel electrode, an organic light-emitting layer, a functional layer in contact with the organic light-emitting layer in the aperture and electrically connected to the power supply layer, and a common electrode, an inorganic film is disposed between the functional layer and side walls of an opening for the aperture over the power supply layer in the resin partition layer.Type: GrantFiled: July 5, 2012Date of Patent: April 14, 2015Assignee: Panasonic CorporationInventors: Naoko Mizusaki, Kenichi Nendai
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Publication number: 20150076455Abstract: A light-emission device includes a substrate and a G light-emission layer; an R light-emission layer, a B light-emission layer, and a wiring layer made of metal that are each arranged above the substrate. Each of the G light-emission layer, the R light-emission layer, and the B light-emission layer contains light-emission material. An amount of heat that the B light-emission layer generates upon light emission is greater than an amount of heat that the G light-emission layer generates upon light emission. Further, the B light-emission layer directly faces the wiring layer at a facing edge portion.Type: ApplicationFiled: April 17, 2013Publication date: March 19, 2015Inventors: Naoko Mizusaki, Kenichi Nendai
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Patent number: 8981361Abstract: A hole injection layer and a second electrode are both formed to be continuous above a first electrode and above an auxiliary wiring. The hole injection layer contains a tungsten oxide. An 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, and the tungsten oxide 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 0.83.Type: GrantFiled: November 18, 2011Date of Patent: March 17, 2015Assignee: Panasonic CorporationInventors: Satoru Ohuchi, Takahiro Komatsu, Ryuuta Yamada, Hirofumi Fujita, Shinya Fujimura, Seiji Nishiyama, Kenichi Nendai, Kou Sugano, Shuhei Yada
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Publication number: 20150001517Abstract: An electronic device includes a substrate, a first conductive layer disposed over the substrate, an organic insulating layer, including an organic material, disposed over the first conductive layer and having an aperture exposing a portion of the first conductive layer, a second conductive layer, which is metallic, covering a top face of the organic insulating layer, an inner circumferential face that faces the aperture in the organic insulating layer, and the exposed portion of the first conductive layer, and an intermediate layer that includes an oxide or a nitride, disposed only between the second conductive layer and the inner circumferential face that faces the aperture in the organic insulating layer. The first conductive layer and the second conductive layer are in contact at the bottom face of the aperture in the organic insulating layer.Type: ApplicationFiled: January 10, 2013Publication date: January 1, 2015Inventors: Yuuki Abe, Kenichi Nendai, Shuhei Yada, Kou Sugano
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Publication number: 20140346484Abstract: A organic EL display panel includes an inter-layer insulation film, a pixel electrode, auxiliary wiring, a partition layer, an organic light-emitting layer, and a common electrode. The inter-layer insulation film has at least one paired concave portion and non-concave portion disposed in a region over the auxiliary wiring, a top face of the concave portion being concave with respect to a top face of the non-concave portion, and the auxiliary wiring includes a part over the concave portion and a part over the non-concave portion, a top face of the part over the concave portion being concave with respect to a top face of the part over the non-concave portion.Type: ApplicationFiled: November 20, 2012Publication date: November 27, 2014Applicant: Panasonic CorporationInventors: Kenichi Nendai, Takashi Osako, Naoko Mizusaki
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Patent number: 8884276Abstract: Provided is organic EL display panel and an organic EL display apparatus that can be driven at a low voltage and that exhibit excellent light-emitting efficiency. Included are a substrate, a first electrode, an auxiliary wiring, a hole injection layer, a functional layer, and a second electrode. The hole injection layer and the second electrode are formed to be continuous above the first electrode and above the auxiliary wiring. The second electrode and the auxiliary wiring are electrically connected by the hole injection layer in an organic EL display panel. The hole injection layer is a metal oxide film, and metal atoms constituting the metal oxide include both metal atoms at a maximum valence thereof and metal atoms at a valence less than the maximum valence. The metal oxide film includes a metal oxide crystal with a particle diameter on the order of nanometers.Type: GrantFiled: October 25, 2012Date of Patent: November 11, 2014Assignee: Panasonic CorporationInventors: Takahiro Komatsu, Satoru Ohuchi, Ryuuta Yamada, Hirofumi Fujita, Shinya Fujimura, Seiji Nishiyama, Kenichi Nendai, Kou Sugano, Shuhei Yada