Patents by Inventor Shohgo Yamauchi
Shohgo Yamauchi 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).
-
Patent number: 8951646Abstract: A layered structure including a first electrode and a second electrode, a light-emitting layer or a charge separation layer between the first electrode and the second electrode, and a layer containing a conjugated polymer compound between the light-emitting layer or the charge separation layer and the first electrode, wherein the conjugated polymer compound contains a repeating unit selected from the group consisting of a repeating unit of formula (1).Type: GrantFiled: March 5, 2009Date of Patent: February 10, 2015Assignee: Sumitomo Chemical Company, LimitedInventors: Masanobu Tanaka, Kenta Tanaka, Shohgo Yamauchi, Hideyuki Higashimura
-
Patent number: 8895961Abstract: A polymer light emitting element having a large light releasing surface, a high light emitting efficiency and a long life, a polymer light emitting display device and planar light source, as well as a method for manufacturing the polymer light emitting element are provided. The polymer light emitting element is characterized by comprising a first electrode, a second electrode and a light emitting layer provided between the first electrode and the second electrode and containing a polymer compound, wherein the second electrode is composed of three layers, a first layer, a second layer and a third layer arranged in this order viewed from the light emitting layer, and at least one of materials contained in the second layer has a reducing action on at least one of materials contained in the first layer, and the visible light transmittance of the third layer is 40% or more.Type: GrantFiled: December 25, 2008Date of Patent: November 25, 2014Assignee: Sumitomo Chemical Company, LimitedInventor: Shohgo Yamauchi
-
Publication number: 20140077189Abstract: An organic light-emitting device comprises an anode; a hole injection layer in contact with the anode; a light-emitting layer over the hole injection layer; and a cathode over the light-emitting layer, wherein the hole injection layer comprises an organic semiconductor material doped with a partially fluorinated fullerene such as C60. The dopant is present in the range of about 0.1-20 wt %, optionally 0.1-5 wt %. The organic semiconductor is preferably a polymer comprising repeat units of formula (I): wherein Ar1 and Ar2 in each occurrence are independently selected from optionally substituted aryl or heteroaryl groups; n is greater than or equal to 1, preferably 1 or 2; R is H or a substituent; any of Ar1, Ar2 and R may be linked by a direct bond or linking group; and x and y are each independently 1, 2 or 3.Type: ApplicationFiled: April 2, 2012Publication date: March 20, 2014Applicants: SUMITOMO CHEMICAL COMPANY LIMITED, CAMBRIDGE DISPLAY TECHNOLOGY LIMITEDInventors: Thomas Kugler, Richard Wilson, Sarah M. Tyler, Shohgo Yamauchi, Masato Shakutsui, Tadashi Goda, Norihito Ito
-
Publication number: 20130033173Abstract: The problem to be solved of the present invention is to improve luminance level of a polymer light-emitting device even when it is driven at a low voltage. Means for solving the problem is a polymer light-emitting device comprising a cathode, an anode, and a functional layer containing a polymer compound and a light-emitting layer containing an organic polymer light-emitting compound arranged between the cathode and the anode, wherein the cathode comprises a first electrode layer and a second electrode layer in this order from the light-emitting layer side, the first electrode layer comprises a first material and a second material, the first material comprises a material which contains one or more compounds selected from the group consisting of sodium fluoride, potassium fluoride, cesium fluoride, rubidium fluoride and a carbonate of an alkaline earth metal, and the second material comprises a substance which has a reduction action on the first material.Type: ApplicationFiled: January 13, 2011Publication date: February 7, 2013Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventor: Shohgo Yamauchi
-
Publication number: 20120211729Abstract: The problem to be solved of the present invention is to provide a polymer light-emitting device having a long luminance half-decay lifetime.Type: ApplicationFiled: July 7, 2010Publication date: August 23, 2012Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventor: Shohgo Yamauchi
-
Publication number: 20110006294Abstract: Disclosed is a layered structure including a first electrode and a second electrode, a light-emitting layer or a charge separation layer between the first electrode and the second electrode, and a layer containing a conjugated polymer compound between the light-emitting layer or the charge separation layer and the first electrode, wherein the conjugated polymer compound contains a repeating unit selected from the group consisting of a repeating unit represented by formula (1): wherein Ar1 represents a divalent aromatic group, R1 represents a substituent group having a group represented by formula (2), Ar1 may have a substituent group other than R1, and n1 represents an integer of 1 or more; -(R2)c1-(Q1)n2-Y1(M1)a1(Z1)b1??(2) wherein R2 represents a divalent aromatic group which may have a substituent group, Q1 represents a divalent organic group which may have a substituent group, Y1 represents a carbocation, an ammonium cation, a phosphonyl cation or a sulfonyl cation, M1 represents F?, Cl?, Br?, I?,Type: ApplicationFiled: March 5, 2009Publication date: January 13, 2011Applicant: Sumitomo Chemical Company, LimitedInventors: Masanobu Tanaka, Kenta Tanaka, Shohgo Yamauchi, Hideyuki Higashimura
-
Publication number: 20100270544Abstract: A polymer light emitting element having a large light releasing surface, a high light emitting efficiency and a long life, a polymer light emitting display device and planar light source, as well as a method for manufacturing the polymer light emitting element are provided. The polymer light emitting element is characterized by comprising a first electrode, a second electrode and a light emitting layer provided between the first electrode and the second electrode and containing a polymer compound, wherein the second electrode is composed of three layers, a first layer, a second layer and a third layer arranged in this order viewed from the light emitting layer, and at least one of materials contained in the second layer has a reducing action on at least one of materials contained in the first layer, and the visible light transmittance of the third layer is 40% or more.Type: ApplicationFiled: December 25, 2008Publication date: October 28, 2010Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventor: Shohgo Yamauchi
-
Publication number: 20100187518Abstract: A method for producing an organic light emitting device having an anode, a layer containing an electron accepting organic compound, a hole transporting layer containing an organic compound, a light emitting layer containing a macromolecular compound, and a cathode in this order, the layer containing the electron accepting organic compound being in contact with the anode and the hole transporting layer, wherein the layer containing the electron accepting organic compound is formed by producing a film by using a composition comprising the electron accepting organic compound and an organic solvent, and then melting the film.Type: ApplicationFiled: July 9, 2008Publication date: July 29, 2010Applicant: Sumitomo Chemical Company, LimitedInventors: Shohgo Yamauchi, Masataka Iwasaki
-
Patent number: 6587604Abstract: An optical semiconductor device includes an optical modulator and an optical detector formed integrally on a common substrate to form an optical integrated circuit, wherein an optical beam spot conversion part is provided also integrally on the common substrate so as to connect an output end of the optical modulator and an input end of the optical detector.Type: GrantFiled: September 26, 2001Date of Patent: July 1, 2003Assignee: Fujitsu Quantum Devices, Ltd.Inventor: Shohgo Yamauchi
-
Publication number: 20020038900Abstract: An optical semiconductor device includes an optical modulator and an optical detector formed integrally on a common substrate to form an optical integrated circuit, wherein an optical beam spot conversion part is provided also integrally on the common substrate so as to connect an output end of the optical modulator and an input end of the optical detector.Type: ApplicationFiled: September 26, 2001Publication date: April 4, 2002Applicant: FUJITSU QUANTUM DEVICES LIMITEDInventor: Shohgo Yamauchi