Patents by Inventor Yuji Hamada

Yuji Hamada 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: 10170730
    Abstract: A vacuum evaporation device, a vacuum evaporation method, and an organic light-emitting display panel are provided. The vacuum evaporation device comprises at least a first evaporation chamber. The first evaporation chamber includes at least one first organic material evaporation source and at least one first metal evaporation source. The at least one first organic material evaporation source is configured to evaporate a first organic material, and the at least one first metal evaporation source is configured to evaporate a first metal material. The at least one first organic material evaporation source and the at least one first metal evaporation source are controlled to perform evaporation simultaneously to generate blend doping of a first organic material and a first metal material on a substrate disposed within the first evaporation chamber.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: January 1, 2019
    Assignees: SHANGHAI TIANMA AM-OLED CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Yuji Hamada, Jinghua Niu, Wei He, Honggang Yan, Lei Lv, Xiangcheng Wang
  • Publication number: 20180358416
    Abstract: An organic light-emitting structure is described herein. The organic light emitting structure includes a first light-emitting unit, a second light-emitting unit, a third light-emitting unit, and a fourth light-emitting unit. An emission wavelength of the first light-emitting unit, an emission wavelength of the second light-emitting unit, an emission wavelength of the third light-emitting unit, and an emission wavelength of the fourth light-emitting unit successively increase. Each of a luminous efficiency of the second light-emitting unit, and a luminous efficiency of the third light-emitting unit is greater than each of a luminous efficiency of the first light-emitting unit and a luminous efficiency of the fourth light-emitting unit. The color gamut range of the organic light-emitting structure is increased, the color saturation of the light-emitting device is improved, and quantity of colors is increased, so that the development trend of color reproducibility for the display devices can be satisfied.
    Type: Application
    Filed: October 18, 2017
    Publication date: December 13, 2018
    Inventor: Yuji HAMADA
  • Publication number: 20180358417
    Abstract: An organic light-emitting structure is described. The organic light-emitting structure includes a first light-emitting unit, a second light-emitting unit, a third light-emitting unit, and a fourth light-emitting unit. Each of the first light-emitting unit, the second light-emitting unit, the third light-emitting unit, and the fourth light-emitting unit comprises a first electrode, a second electrode, and an organic laminated body placed between the first electrode and the second electrode. One of the first electrode and the second electrode is a translucent electrode. At least one light-emitting unit is a fluorescent light-emitting unit. The color gamut range of the organic light-emitting structure is increased, the color saturation of the light-emitting device is improved, and quantity of colors is increased, so that the development trend of color reproducibility for the display devices can be satisfied.
    Type: Application
    Filed: October 18, 2017
    Publication date: December 13, 2018
    Inventor: Yuji HAMADA
  • Patent number: 10062862
    Abstract: The present disclosure provides an OLED display panel, an electronic device, and a manufacturing method. The OLED display panel comprises a substrate, a first electrode, a light-emitting function layer, and a second electrode including Ag or a metal alloy containing Ag. When the second electrode is made of the metal alloy containing Ag, a content of Ag in the second electrode is more than a sum of contents of all other elements in the second electrode.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: August 28, 2018
    Assignees: SHANGHAI TIANMA AM-OLED CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Yuji Hamada, Zhihong Lei, Jinghua Niu, Xiangcheng Wang, Wei He, Chen Liu, Qing Zhu
  • Patent number: 10050219
    Abstract: An organic light-emitting display panel and an organic light-emitting display device are provided. The organic light-emitting display panel includes: a first electrode, a first light-emitting layer, a second light-emitting layer and a second electrode that are stacked in turn. The ratio of the hole mobility to the electron mobility of the first light-emitting layer is greater than or equal to 102, and the ratio of the electron mobility to the hole mobility of the second light-emitting layer is greater than or equal to 102.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: August 14, 2018
    Assignees: Shanghai Tianma AM-OLED Co., Ltd., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Zhihong Lei, Jinghua Niu, Yuji Hamada, Lei Lv
  • Patent number: 10050088
    Abstract: An organic light-emitting diode (OLED) display panel and an OLED display device are provided. The OLED display panel comprises a first substrate; a first electrode layer disposed on the first substrate and including a plurality of first electrodes; a first hole transport layer disposed on a surface of the first electrode layer far away from the first substrate, and including a plurality of hole transport units, wherein the plurality of hole transport units are arranged in correspondence with the plurality of first electrodes respectively; a plurality of light-emitting devices disposed on a surface of the first hole transport layer far away from the first electrode layer, wherein the plurality of the light-emitting devices are arranged in correspondence with the plurality of hole transport units respectively, and the hole transport units corresponding to the light-emitting devices of two different colors have different mobility; and a second electrode layer.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: August 14, 2018
    Assignees: SHANGHAI TIANMA AM-OLED CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Xiangcheng Wang, Jinghua Niu, Wei He, Yuji Hamada, Chen Liu
  • Publication number: 20180198098
    Abstract: The disclosure discloses an organic light-emitting display panel, a method for adjusting color temperature thereof, and a display device, and the organic light-emitting display panel includes: an underlying substrate, and a plurality of light-emitting elements arranged on the underlying substrate; each of the light-emitting elements includes a first electrode, a first light-emitting layer, a second electrode, a second light-emitting layer, and a third electrode arranged on the underlying substrate in that order in a light exit direction of the organic light-emitting display panel, where a wavelength of emitted light from the first light-emitting layer is greater than a wavelength of emitted light from the second light-emitting layer; and the first electrode, the second electrode, and the third electrode are connected respectively with different voltage signal terminals.
    Type: Application
    Filed: March 5, 2018
    Publication date: July 12, 2018
    Inventors: Shuang CHENG, Jinghua NIU, Xiangcheng WANG, Yuji HAMADA, Angran ZHANG, Run YANG
  • Publication number: 20180190940
    Abstract: An organic light emitting display device and an organic light emitting display apparatus are provided. The organic light emitting display device includes a first electrode and a second electrode disposed opposite to each other, a light emitting layer positioned between the first electrode and the second electrode, and a capping layer positioned on a surface of a side of the second electrode far away from the light emitting layer, the capping layer is formed as a single layer or superposition of a plurality of layers, the at least one layer of the capping layer is a composite layer, and the composite material of the composite layer comprises an organic material and a metal dopant.
    Type: Application
    Filed: June 8, 2017
    Publication date: July 5, 2018
    Applicants: Shanghai Tianma AM-OLED Co., Ltd., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Yinhe Liu, Wei He, Xiangcheng Wang, YUJI HAMADA, Jinghua Niu, Qing Zhu
  • Publication number: 20180165525
    Abstract: In the present invention, a traveling lane on which a vehicle is traveling is estimated by a traveling lane estimator based on map information, current position information of the vehicle, and white line information on a white line that divides a road on which the vehicle travels. The traveling lane estimator estimates the traveling lane based on a traveling lane probability of each of lanes, which is obtained based on a line type of the white line, a traveling lane probability of each of the lanes, which is obtained based on whether or not a lane adjacent to the traveling lane is present, and a traveling lane probability of each of the lanes, which is obtained based on a lane on which the vehicle traveled when the traveling lane was estimated previously.
    Type: Application
    Filed: June 15, 2015
    Publication date: June 14, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yuji HAMADA, Masahiko IKAWA, Masatoshi FUJII, Norihiro NISHIUMA
  • Publication number: 20180166509
    Abstract: The application discloses an organic light-emitting diode for a display panel. The organic light-emitting diode includes an anode, a cathode, at least two emitting layers arranged between the anode and the cathode, and a charge generation layer arranged between every two adjacent emitting layers, wherein the charge generation layer includes a first layer unit and a second layer unit which are arranged in sequence, the first layer unit includes a hole injection material and a P-type semiconductor material doped in the hole injection material, and the second layer unit includes an electron transport material and ytterbium doped in the electron transport material, wherein a volume concentration of ytterbium doped in the electron transport material ranges from 1% to 5%.
    Type: Application
    Filed: February 7, 2018
    Publication date: June 14, 2018
    Inventors: Huihui MA, Xiangcheng WANG, Yuji HAMADA, Jinghua NIU
  • Publication number: 20180138252
    Abstract: An organic light-emitting display panel, a fabrication method thereof, and a display apparatus are provided. The organic light-emitting display panel comprises a substrate; a plurality of blocking structures disposed on the substrate, wherein a blocking structure has a first surface facing the substrate and an opposing second surface far away from the substrate; a plurality of first electrodes, wherein a first electrode is configured between adjacent blocking structures; an organic functional film layer covering at least one of the plurality of first electrodes and the plurality of blocking structures, wherein the organic functional film layer includes a light-emitting layer; and a degradation region disposed in a portion of the second surface of the blocking structure, wherein the degradation region degrades a carrier transportation in a portion of the organic functional film layer in which the portion of the organic functional film layer covers the degradation region.
    Type: Application
    Filed: January 12, 2018
    Publication date: May 17, 2018
    Inventors: Shuang CHENG, Jinghua NIU, Xiangcheng WANG, Yuji HAMADA
  • Publication number: 20180033996
    Abstract: Disclosed are an organic light-emitting display panel and an organic light-emitting display device. The organic light-emitting display panel comprises: a substrate, a second electrode, a light-emitting layer, a first hole transport layer and a first electrode that are successively laminated, wherein, the materials of both the first electrode and the second electrode are silver or silver-containing metallic materials, the material of the first hole transport layer is a conductive material doped with a P-type semiconductor material and a P-type semiconductor material layer is set between the first hole transport layer and the first electrode.
    Type: Application
    Filed: September 27, 2017
    Publication date: February 1, 2018
    Inventors: Xiangcheng WANG, Jinghua NIU, Yuji HAMADA, Wei HE, Wanming HUA, Shuang CHENG
  • Publication number: 20180013087
    Abstract: The present disclosure relates to an OLED display panel. With the OLED display panel, a higher luminous efficiency is achieved by selecting a thermally activated delayed fluorescent material for doping into an organic light emitting layer and applying a compound having a specific energy level to match, thereby the luminous efficiency of an organic photo electronic device is improved.
    Type: Application
    Filed: September 22, 2017
    Publication date: January 11, 2018
    Inventors: Xiangcheng WANG, Yuji HAMADA, Jinghua NIU, Chen LIU
  • Publication number: 20180013098
    Abstract: An organic light-emitting display panel and an organic light-emitting display device are disclosed, wherein the organic light-emitting display panel includes: a substrate, a cathode, a first auxiliary functional structure, a light-emitting structure and an anode that are successively laminated; wherein, the material of both the anode and the cathode is silver or a silver-containing metallic material, and a micro-cavity structure is formed between the cathode and the anode; the first auxiliary functional structure includes at least one of an electron injection layer, an electron transport layer and a hole blocking layer, and the first auxiliary functional structure is multiplexed as a micro-cavity length adjusting structure.
    Type: Application
    Filed: September 6, 2017
    Publication date: January 11, 2018
    Inventors: Xiangcheng WANG, Jinghua NIU, Yuji HAMADA, Shuang CHENG, Wei HE, Wanming HUA
  • Publication number: 20170358768
    Abstract: The present disclosure relates to an OLED display panel, comprising a first electrode and a second electrode, a light emitting layer and a first auxiliary light emitting layer disposed between the first electrode and the second electrode, the first auxiliary light emitting layer is disposed between the light emitting layer and the second electrode, wherein the first auxiliary light emitting layer includes at least a first electron-type auxiliary light emitting layer, wherein the first electron-type auxiliary light emitting layer includes a host material and a metal element doped in the host material; the host material has at least one pyridyl group and an aromatic group conjugated to the at least one pyridyl group; and the glass transition temperature of the host material is ?90° C. The present disclosure can improve the luminous efficiency and lifetime of an organic photoelectronic device and reduce its voltage by using this method.
    Type: Application
    Filed: August 9, 2017
    Publication date: December 14, 2017
    Applicant: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Ying LIU, Xiangcheng WANG, Hongyang REN, YUJI HAMADA, Wei HE, Chen LIU, Jie LI
  • Publication number: 20170346032
    Abstract: An OLED display panel is provided. The OLED display panel comprises a first electrode; an opposite second electrode; and a plurality of stacking layers sandwiched between the first electrode and the second electrode. The plurality of stacking layers at least comprises a first auxiliary light-emitting layer and a light-emitting layer sequentially disposed on the first electrode. The first auxiliary light-emitting layer comprises a host material and a dopant material, and the dopant material comprises a compound of the following chemical formula (I): where n is an integer equal to or larger than 1, X1, X2 and Xn+2 each independently has a chemical structure of R? is selected from any one of a substituted aryl group and a substituted heteroaryl group, and a substituent in the substituted aryl group and a substituent in the substituted heteroaryl group each includes at least one electron acceptor group.
    Type: Application
    Filed: August 15, 2017
    Publication date: November 30, 2017
    Inventors: Huihui MA, Xiangcheng WANG, Hongyang REN, Jie LI, Yuji HAMADA, Wei HE, Chen LIU
  • Publication number: 20170338422
    Abstract: The present disclosure relates to an electron transport material having a structure represented by formula (I). The present disclosure enhances the glass transition temperature of the material by way of increasing the molecular weight thereof through modifying phenanthroline, without influencing the electron transport property of the material. A novel type of electron transport material having a glass transition temperature of more than 100° C. is designed by the present disclosure. The compound provided by the present disclosure is used as an electron transport material, i.e. as an electron transport layer; and the compound is doped with metals for use as an electron injection layer, thereby improving the efficiency of an OLED device and reducing the operation voltage.
    Type: Application
    Filed: August 9, 2017
    Publication date: November 23, 2017
    Inventors: Miao WANG, Xiangcheng WANG, Ying LIU, Yuji HAMADA, Jinghua NIU
  • Publication number: 20170330918
    Abstract: The present disclosure relates to a hole transporting material having a structure of formula (I). The present disclosure provides a hole transporting material having at least one fluorenyl ring and having one non-hydrogen substituent on at least one benzene ring in the formula and being capable of obtaining a suitable mobility rate without occurrence of crosstalk between pixels. And the hole transporting material provided by the present disclosure is capable of satisfying the requirements on mask cleaning with solubility (in NMP solvent).
    Type: Application
    Filed: August 2, 2017
    Publication date: November 16, 2017
    Inventors: Xiangcheng WANG, Wei He, Ying Liu, Jinghua Niu, Yuji Hamada
  • Publication number: 20170317308
    Abstract: The present invention relates to an OLED display panel comprising a first electrode, and a first hole transporting layer, a second hole transporting layer, and an electron transporting layer stacked on the first electrode, and a second electrode formed; at least two light emitting units are provided on the second hole transporting layer; the electron transporting layer covers the light emitting units; the material of the electron transporting layer fills the gap(s) between adjacent light emitting units; the first hole transporting layer comprises a hole transporting material which has a hole mobility of 9×10?5-5×104 cm2/V·S, and a solubility of 10 g/L or more in a cleaning solvent at 25° C. The present invention utilizes a hole transporting material having a specific hole mobility as a common hole transporting layer, avoiding crosstalks between different pixels.
    Type: Application
    Filed: July 17, 2017
    Publication date: November 2, 2017
    Inventors: Xiangcheng WANG, Chen LIU, Wei HE, Jinghua NIU, Yuji HAMADA, Ying LIU
  • Publication number: 20170309861
    Abstract: Embodiment of the present disclosure discloses an organic light emitting display device and apparatus, the organic light emitting display device includes a first electrode and a second electrode disposed opposite to each other, a light emitting layer positioned between the first electrode and the second electrode, and a cap layer positioned on a side surface of the second electrode facing away from the light emitting layer, wherein the cap layer includes at least two composite layers, the refractive index of the composite layer of the at least two composite layers closer to the second electrode is greater than that of the other composite layer further away from the second electrode in the range of wavelength of 400 nm to 700 nm.
    Type: Application
    Filed: July 3, 2017
    Publication date: October 26, 2017
    Applicants: SHANGHAI TIANMA AM-OLED CO., LTD., TIANMA MICRO-ELECTRONICS CO.,LTD.
    Inventors: Xiangcheng WANG, Shuang CHENG, Jinghua NIU, YUJI HAMADA, Wei HE