Multicolor Organic Light-emitting Device (oled) (epo) Patents (Class 257/E51.022)
  • Patent number: 10283569
    Abstract: A tandem organic light-emitting diode, an array substrate and a display device are provided. The tandem organic light-emitting diode includes an anode (10), a hole transport layer (11), a first light-emitting layer (12), a first charge generation layer (13), a second charge generation layer (14), a third charge generation layer (15), a second light-emitting layer (16), an electron transport layer (17) and a cathode (18) which are sequentially laminated, wherein the first charge generation layer (13) is an N-type bulk heterojunction, the second charge generation layer (14) is a PN junction type bulk heterojunction, and the third charge generation layer (15) is a P-type bulk heterojunction. The array substrate includes a plurality of the above tandem organic light-emitting diodes and the display device includes the above array substrate. The tandem organic light-emitting diode provided herein can be applied in a display device for reducing power consumption.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: May 7, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Wentao Bi
  • Patent number: 10263044
    Abstract: A tandem organic light-emitting diode, an array substrate and a display device are provided. The tandem organic light-emitting diode includes an anode, a hole transport layer, a first light-emitting layer, a first charge generation layer, a second charge generation layer, a third charge generation layer, a fourth charge generation layer, a second light-emitting layer, an electron transport layer and a cathode which are sequentially laminated, wherein the first charge generation layer is an N-type bulk heterojunction, the second charge generation layer and the third charge generation layer are both PN junction type bulk heterojunctions, a proportion of the P-type organic material in the second charge generation layer is greater than that of the N-type organic material, a proportion of the P-type organic material in the third charge generation layer is less than that of the N-type organic material, and the fourth charge generation layer is a P-type bulk heterojunction.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: April 16, 2019
    Assignee: BOE Technology Group Co., Ltd.
    Inventor: Wentao Bi
  • Patent number: 10236466
    Abstract: According to one embodiment, an organic light emitting device is described including a first light emitting unit, a second light emitting unit and a charge generation layer wherein the second light emitting unit is stacked over the first light emitting unit and is connected to the first light emitting unit by means of the charge generation layer and wherein the charge generation layer includes an electron transport layer, a transition metal oxide layer arranged over the electron transport layer and a diffusion suppressing layer arranged between the electron transport layer and the transition metal oxide layer to separate the electron transport layer from the transition metal oxide layer.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: March 19, 2019
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Xiaowei Sun, Hilmi Volkan Demir, Swee Tiam Tan, Yongbiao Zhao
  • Patent number: 10153462
    Abstract: The present invention provides a manufacturing method of a flexible OLED display panel, in which multiple loops of inorganic barrier walls are first formed on a rigid base plate such that the multiple loops of inorganic barrier walls respectively and circumferentially encloses a plurality of panel areas on the rigid base plate so that when an organic material film is then coated on the rigid base plate and the multiple loops of inorganic barrier walls in a manner of covering the entirety of surface thereof, the multiple loops of inorganic barrier walls provide an effect of division to allow a plurality of flexible backings to be respectively formed on the plurality of panel areas of the rigid base plate. Afterwards, a laser lift off technique is applied to remove the plurality of flexible backings from the rigid base plate to thus obtain a plurality of flexible OLED display panels.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: December 11, 2018
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Wei Yu
  • Patent number: 9040963
    Abstract: Provided is an organic light emitting device. The organic light emitting device comprising a first light emitting part on a substrate, emitting a first light of a first wavelength, wherein the first light emitting part includes a transparent first electrode, a first organic light emitting layer, and a transparent second electrode sequentially stacked on the substrate, a second light emitting part on the first light emitting part, emitting a second light of a second wavelength, wherein the second light emitting part includes a transparent third electrode, a second organic light emitting layer, and a reflective fourth electrode sequentially stacked on the first light emitting part, and a fluorescent material disposed at least one between the substrate and the first light emitting part, and between the first light emitting part and second light emitting part.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: May 26, 2015
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jeong Ik Lee, Chul Woong Joo, Jun-Han Han, Joo Hyun Hwang, Nam Sung Cho, Jin Woo Huh, Jaehyun Moon, Seung Koo Park, Jin Wook Shin, Doo-Hee Cho, Hye Yong Chu
  • Patent number: 9040961
    Abstract: An organic light emitting diode (OLED) display includes a substrate main body, a plurality of organic light emitting elements on the substrate main body, a column spacer on the substrate main body and between two or more of the plurality of organic light emitting elements, and an encapsulation thin film covering at least one of the organic light emitting elements and having regions divided by the column spacer.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: May 26, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Tae-Jin Kim
  • Patent number: 9035286
    Abstract: A color light-emitting diode using a blue light component to produce red light and green light is disclosed. A blue-light emitting material is provided between a cathode layer and an anode layer for emitting the blue light component. A light re-emitting layer has a first material in a first diode section arranged to produce a red light component in response to the blue light component, and a second material in a second diode section arranged to produce a green light component in response to the blue light component. A transparent material in a third diode section allows part of the blue light component to transmit through. The anode layer is partitioned into three electrode portions separately located in the three diode sections, so that the red, green and blue light components in the diode sections can be separately controlled.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: May 19, 2015
    Assignee: AU Optronics Corporation
    Inventors: Kuei-Bai Chen, Chia-Hao Li, Chen-Hsien Liao
  • Patent number: 9029903
    Abstract: A light emitting diode package including a package body with a cavity, a plurality of light emitting diode (LED) chips in the cavity, a plurality of wires connected to the plurality of LED chips, and a plurality of lead frames in the package body, wherein the lead frames comprise a first lead frame electrically connected to a first electrode of a first LED chip, a second lead frame electrically connected to a second electrode of the first LED chip and a second electrode of a second LED chip, a third lead frame electrically connected to a first electrode of the second LED chip, and fourth lead frame electrically connected to a second electrode of a third LED chip. Further, ends of the lead frames are exposed outside of the package body and penetrate the package body, and the first electrodes are P electrodes and the second electrodes are N electrodes.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: May 12, 2015
    Assignee: LG Innotek Co., Ltd.
    Inventor: Won-Jin Son
  • Patent number: 9024303
    Abstract: An OLED display and associated methods, including a substrate; a first electrode; a second electrode; and an organic emission layer between the first and second electrodes, the organic emission layer including first-third organic emission layers, wherein the third organic emission layer is commonly disposed on the first electrode in the first-third subpixels, the first organic emission layer is in the first subpixel, the second organic emission layer is on the third organic emission layer in the first to third subpixels, an intermediate layer is between the first organic emission layer and the third organic emission layer in the first subpixel and between the second organic emission layer and the third organic emission layer in the second subpixel, and a HTL is between the first organic emission layer and the intermediate layer in the first subpixel and between the second organic emission layer and the intermediate layer in the second subpixel.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: May 5, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Woo Park, Myung-Jong Jung, Sung-Woo Cho, Hyung-Tag Lim
  • Patent number: 9006009
    Abstract: In an organic light emitting diode (OLED) display device and a method for fabricating the same, OLED pixels are patterned through a photolithography process, so a large area patterning can be performed and a fine pitch can be obtained, and an organic compound layer can be protected by forming a buffer layer of a metal oxide on an upper portion of the organic compound layer or patterning the organic compound layer by using a cathode as a mask, improving device efficiency. In addition, among red, green, and blue pixels, two pixels are patterned through a lift-off process and the other remaining one is deposited to be formed without patterning, the process can be simplified and efficiency can be increased.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: April 14, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Young-Mi Kim, Jong-Geun Yoon, Joon-Young Heo, Han-Sun Park, Eui-Doo Do, Yeon-Kyeong Lee, Dae-Hyun Kim, Jong-Sik Shim
  • Patent number: 9000426
    Abstract: A method of manufacturing an organic light-emitting display device includes providing a substrate which comprises thin-film transistors (TFTs), and forming a planarization layer over the substrate. The planarization layer comprises a first planarization portion and a plurality of second planarization portions. The method further includes forming a plurality of first electrodes over the planarization layer, forming an organic light-emitting layer over each of the first electrodes, and forming a second electrode over the organic light-emitting layer. The forming of the planarization layer includes forming the first planarization portion which defines a plurality of first openings and forming one of the second planarization portions in each of the first openings.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: April 7, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Kenji Takii
  • Patent number: 8994043
    Abstract: Disclosed is a light-emitting element comprising a plurality of light-emitting units which are separated from one another by a charge generation layer. The light-emitting units each have a light-emitting layer which is featured by a stack of two layers. Each of the two layers includes a host material and a phosphorescent material where the phosphorescent material in one of the two layers is blue emissive while the phosphorescent material in the other of the two layers exhibits a maximum emission peak in a range from 500 nm to 700 nm. The phosphorescent material exhibiting a maximum emission peak in a range from 500 nm to 700 nm may be different from light-emitting unit to light-emitting unit. An additive may be included in at least one of the two layers so that an exciplex is formed with the host material.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: March 31, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi Seo, Nobuharu Ohsawa
  • Patent number: 8994027
    Abstract: A thin film transistor (TFT) array substrate includes a TFT including an active layer, a gate electrode, a source electrode, a drain electrode, a first gate insulating layer and a second gate insulating layer formed between the active layer and the gate electrode, and an interlayer insulating layer formed between the gate electrode and the source electrode and the drain electrode; a pixel electrode formed in an opening of the interlayer insulating layer, the pixel electrode including transparent conductive oxide; a translucent electrode formed in a region corresponding to the pixel electrode, between the first gate insulating layer and the second gate insulating layer; and a capacitor including a lower electrode formed from the same layer as the active layer, and an upper electrode formed from the same layer as the translucent electrode.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: March 31, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Dae-Woo Lee
  • Patent number: 8994010
    Abstract: An organic light-emitting display device and a method of manufacturing the organic light-emitting display device are provided. The organic light-emitting display device includes a plurality of pixels each including: a first region including a light-emitting region for emitting light, a first electrode and an emission layer covering the first electrode being located in the light-emitting region; and a second region including a transmissive region for transmitting external light through the display device. The display device also includes: a third region between the pixels; a first auxiliary layer in the first and third regions; a second electrode on the first auxiliary layer in the first and third regions; a second auxiliary layer covering the second electrode and located in the first and second regions and not in the third region; and a third electrode on the second electrode in the third region.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: March 31, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun-Ho Choi, Jin-Koo Chung, Seong-Min Kim
  • Patent number: 8995022
    Abstract: An ink jet process is used to deposit a material layer to a desired thickness. Layout data is converted to per-cell grayscale values, each representing ink volume to be locally delivered. The grayscale values are used to generate a halftone pattern to deliver variable ink volume (and thickness) to the substrate. The halftoning provides for a relatively continuous layer (e.g., without unintended gaps or holes) while providing for variable volume and, thus, contributes to variable ink/material buildup to achieve desired thickness. The ink is jetted as liquid or aerosol that suspends material used to form the material layer, for example, an organic material used to form an encapsulation layer for a flat panel device. The deposited layer is then cured or otherwise finished to complete the process.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: March 31, 2015
    Assignee: Kateeva, Inc.
    Inventors: Eliyahu Vronsky, Nahid Harjee
  • Patent number: 8987019
    Abstract: A method of manufacturing an opto-electric device is disclosed, comprising the steps of providing a substrate (10), overlying a first main side of the substrate with an electrically interconnected open shunting structure (20), embedding the electrically interconnected open shunting structure in a transparent layer (30), removing the substrate from the embedded electrically interconnected open shunting structure, depositing a functional layer structure (40) over a free surface (31) formed after removal of the substrate.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: March 24, 2015
    Assignee: Koninklijke Philips N.V.
    Inventors: Antonius Maria Bernardus van Mol, Joanne Sarah Wilson, Chia-Chen Fan, Herbert Lifka, Edward Willem Albert Young, Hieronymus A.J.M. Andriessen
  • Patent number: 8987714
    Abstract: An organic light emitting diode display includes a p-doped layer that can obtain high efficiency at low-voltage driving and low current and prevent leakage current by differentially forming the p-doped layer for each pixel.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: March 24, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ja-Hyun Im, Ji-Hwan Yoon, Byung-Hoon Chun, Jung-Min Moon, Tae-Kwang Sung
  • Patent number: 8987716
    Abstract: There is provided an organic light-emitting diode (OLED) display device, including: a first substrate on which a plurality of sub-pixel areas are defined; a plurality of first electrodes in the plurality of sub-pixel areas, respectively; and a plurality of light-emitting layers over the plurality of first electrodes and corresponding to the plurality of sub-pixel areas, respectively; wherein at least one of the plurality of light-emitting layers extends to a neighboring sub-pixel area among the plurality of sub-pixel areas, and has an occupied area in the neighboring sub-pixel area.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: March 24, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Se-Hee Lee, Sun-Kap Kwon
  • Patent number: 8980441
    Abstract: An organic electroluminescent device is provided and includes: a cathode; an anode; and a light-emitting layer between the cathode and the anode. The light-emitting layer includes a compound represented by formula (1). In formula (1), L represents a linking group; A1, A2, A3, A4, A5, A6, A7, A8, A9, and A10 each independently represent a carbon atom or a nitrogen atom, provided that at least two of A1, A5, A6, and A10 each represent a carbon atom having R?; R? represents a substituent having a carbon atom at a bonding position thereof; a plurality of Rs each independently represent a substituent; m represents an integer; and n represents an integer of 2 to 10.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: March 17, 2015
    Assignee: UDC Ireland Limited
    Inventor: Tetsu Kitamura
  • Patent number: 8975624
    Abstract: The present application discloses OEL display panel including OEL board including organic emission elements situated in respective emission regions compartmentalized by confining wall, and black matrix facing OEL board. The black matrix is provided with openings, each of which allows passage of light from each of the organic emission elements. Organic emission elements include first organic emission element with organic emission layer for emitting light in first emission color, and second organic emission element with organic emission layer for emitting light in second emission color different from first emission color. Openings include first opening corresponding to first organic emission element, and second opening corresponding to second organic emission element. First organic emission element has lower emission efficiency than second organic emission element does. Thermal conductivity is higher around first opening than second opening.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: March 10, 2015
    Assignee: Panasonic Corporation
    Inventors: Hiroyuki Yamakita, Kenichi Masumoto
  • Patent number: 8969883
    Abstract: The present invention discloses a light device and a fabrication method thereof. An object of the present invention is to provide the light device and the fabrication method thereof an electric/thermal/structural stability is obtained, and a P-type electrode and an N-type electrode can be simultaneously formed. In order to achieve the above object, the inventive light device includes: a GaN-based layer; a high concentration GaN-based layer formed on the GaN-based layer; a first metal-Ga compound layer formed on the high concentration GaN-based layer; a first metal layer formed on the first metal-Ga compound layer; a third metal-Al compound layer formed on the first metal layer; and a conductive oxidation preventive layer formed on the third metal-Al compound layer.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: March 3, 2015
    Assignee: LG Innotek Co., Ltd.
    Inventors: Sung Ho Choo, Ja Soon Jang
  • Patent number: 8969855
    Abstract: An organic light emitting device includes, a base part, patterned first electrodes on the base part, conductive material layers spaced apart from the patterned first electrodes and between the first electrodes, pixel defining layers between the patterned first electrodes, the pixel defining layers overlapping only a portion of upper surfaces of the conductive material layers, light emitting layers on the first electrodes, and a second electrode on the light emitting layers.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: March 3, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Won-Kyu Kwak
  • Patent number: 8956898
    Abstract: The fabrication method for an organic EL device according to the invention includes: forming a third insulating layer on a first insulating layer; removing the third insulating layer in a first pixel region by etching the third insulating layer; forming a second insulating layer that has different thicknesses in a first pixel and a second pixel and has a flat first surface by forming a precursor insulating layer to continuously cover a first reflection film and a second reflection film and then planarizing an upper surface of the precursor insulating layer; and forming a first pixel electrode and a second pixel electrode on the first surface of the second insulating layer. The first insulating layer is slower in the rate at which the layer is removed by etching than the third insulating layer.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: February 17, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Hisakatsu Sato, Satoshi Murata
  • Patent number: 8957411
    Abstract: An object is to improve reliability of a light-emitting device. A light-emitting device has a driver circuit portion including a transistor for a driver circuit and a pixel portion including a transistor for a pixel over one substrate. The transistor for the driver circuit and the transistor for the pixel are inverted staggered transistors each including an oxide semiconductor layer in contact with part of an oxide insulating layer. In the pixel portion, a color filter layer and a light-emitting element are provided over the oxide insulating layer. In the transistor for the driver circuit, a conductive layer overlapping with a gate electrode layer and the oxide semiconductor layer is provided over the oxide insulating layer. The gate electrode layer, a source electrode layer, and a drain electrode layer are formed using metal conductive films.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: February 17, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Junichiro Sakata, Masayuki Sakakura, Yoshiaki Oikawa, Kenichi Okazaki, Hotaka Maruyama
  • Patent number: 8952360
    Abstract: An organic light-emitting display apparatus includes a substrate, a first electrode on the substrate; an intermediate layer on the first electrode, the intermediate layer including an organic light-emitting layer; a second electrode on the intermediate layer, a first inorganic encapsulating layer on the second electrode, the first inorganic encapsulating layer defining a first groove formed therein; a first organic encapsulating layer that is in the first groove defined by the first inorganic encapsulating layer, the first organic encapsulating layer not extending beyond the first groove, and a second inorganic encapsulating layer on the first organic encapsulating layer.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: February 10, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Hun Oh, Gyoo-Chul Jo
  • Patent number: 8952370
    Abstract: An organic light emitting display panel includes a first pixel and a second pixel respectively disposed in first and second light emitting areas. A portion of a first hole transport layer and a portion of a first light emitting layer of the first pixel are disposed in the second light emitting area. The portions of the first hole transport layer and the first light emitting layer overlap a second hole transport layer and a second light emitting layer, which are successively stacked. The second hole transport layer and the second light emitting layer block holes and electrons from moving to the portion of the first light emitting layer.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: February 10, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae Jung Kim, Joon Young Park, Hongkyun Ahn
  • Patent number: 8946735
    Abstract: A pixel structure of electroluminescent display panel has a first sub-pixel region, a second sub-pixel region and a third sub-pixel region. The pixel structure of electroluminescent display panel includes a first organic light-emitting layer and a second organic light-emitting layer. The first organic light-emitting layer, which includes a first organic light-emitting material, is disposed at least in the first sub-pixel region and the second sub-pixel region. The second organic light-emitting layer, which includes a second organic light-emitting material and a third organic light-emitting material, is disposed at least in the second sub-pixel region and the third sub-pixel region. The first organic light-emitting layer and the second organic light-emitting layer overlap in the second sub-pixel region. The first sub-pixel region and the third sub-pixel region have different cavity lengths.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: February 3, 2015
    Assignee: AU Optronics Corp.
    Inventors: Meng-Ting Lee, Miao-Tsai Chu
  • Patent number: 8946684
    Abstract: A light-emitting device includes: an organic layer which is interposed between a first electrode and a second electrode and in which a first light-emitting layer and a second light-emitting layer emitting light of single colors or two or more different colors in a visible wavelength region are sequentially included at mutually separated positions in that order in a direction from the first electrode to the second electrode; a first reflective interface which is provided on the side of the first electrode so as to reflect light emitted from the first light-emitting layer and the second light-emitting layer to be emitted from the side of the second electrode; and a second reflective interface and a third reflective interface which are sequentially provided on the side of the second electrode at mutually separated positions in that order in a direction from the first electrode to the second electrode.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: February 3, 2015
    Assignee: Sony Corporation
    Inventors: Toshihiro Fukuda, Jiro Yamada, Yohei Ebihara
  • Patent number: 8941133
    Abstract: An organic light-emitting display apparatus and a method of manufacturing the same. The organic light-emitting display apparatus includes a substrate; a first passivation layer formed on the substrate; at least one of color filters formed on the first passivation layer; an overcoat layer that covers the color filter; a second passivation layer that is formed on the first passivation layer and surrounds the overcoat layer; a first electrode formed on the second passivation layer; a second electrode facing the first electrode; and an organic layer disposed between the first electrode and the second electrode.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: January 27, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Doo-Hwan Kim, Il-Hwa Hong, Sang-Ha Park
  • Patent number: 8941096
    Abstract: By introducing new concepts into a structure of a conventional organic semiconductor element and without using a conventional ultra thin film, an organic semiconductor element is provided which is more reliable and has higher yield. Further, efficiency is improved particularly in a photoelectronic device using an organic semiconductor. Between an anode and a cathode, there is provided an organic structure including alternately laminated organic thin film layer (functional organic thin film layer) realizing various functions by making an SCLC flow, and a conductive thin film layer (ohmic conductive thin film layer) imbued with a dark conductivity by doping it with an acceptor and a donor, or by the like method.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: January 27, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tetsuo Tsutsui, Hiroko Yamazaki, Satoshi Seo
  • Patent number: 8933471
    Abstract: An organic EL panel includes reflective electrodes, a transparent electrode, organic light-emitting layers, and functional layers that are each provided between a corresponding one of the reflective electrodes and a corresponding one of the respective organic light-emitting layers. The film thicknesses of the respective functional layers of R, G, and B colors are each 60 nm or less such that a local maximum of light-emitting efficiency for a corresponding color is exhibited, and are substantially equal to each other. The optical distances between the respective organic light-emitting layers of the R, G, and B colors and the respective reflective electrodes are each 100 nm or less, and are substantially equal to each other.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: January 13, 2015
    Assignee: Panasonic Corporation
    Inventors: Keiko Kurata, Noriyuki Matsusue, Kazuhiro Yoneda
  • Patent number: 8928013
    Abstract: An organic electroluminescence device includes a first electrode, a second electrode located on a light extraction side and having a metal film, and an organic compound layer provided between the first electrode and the second electrode and including an emission layer. In addition, a first inorganic protective layer is in direct contact with the second electrode and has a specified thickness.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: January 6, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yojiro Matsuda
  • Patent number: 8921839
    Abstract: A method is provided for fabricating an organic light emitting device (OLED) with a spherical back mirror. The method forms a spherical curvature in the substrate and deposits a metal film overlying the spherical curvature, forming a spherical back mirror. A transparent isolation layer is formed overlying the spherical back mirror having a planar top surface. A transparent first electrode layer is formed overlying the isolation layer, and a transparent second electrode layer is formed overlying the first electrode layer. A stack is interposed between the first and second electrode layers. The stack is made up of an electron transport layer adjacent the cathode, a light-emitting (electron injection) layer adjacent to the electron transport layer, a hole transport layer adjacent to the light-emitting layer, and a hole injection layer adjacent to the hole transport layer. The order of the stack layering is dependent which electrode is the anode.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: December 30, 2014
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Jingyu Zhang, Ken Hoshino
  • Patent number: 8907332
    Abstract: An organic light emitting display device includes a substrate including first, second and third sub-pixel regions, a first electrode formed in each of the first sub-pixel region, the second sub-pixel region, and the third sub-pixel region of the substrate, a first light emitting layer formed on the first electrode of each of the first sub-pixel region, the second sub-pixel region, and the third sub-pixel region, spacer layers formed on the first light emitting layer of the first sub-pixel region and the second sub-pixel region and including a material of the first light emitting layer, a second light emitting layer formed on the spacer layer of the first sub-pixel region, a third light emitting layer formed on the spacer layer of the second sub-pixel region, and a second electrode formed on the first light emitting layer, the second light emitting layer, and the third light emitting layer.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: December 9, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Myoung Ye, Ha-Jin Song, Byeong-Wook Yoo, Bum-Suk Lee, Ji-Young Kwon
  • Patent number: 8907358
    Abstract: A pixel in the panel includes sub-pixels 100a, 100b, and 100c. Bank 105a separates organic light-emitting layer of sub-pixel 100a and organic light-emitting layer of a sub-pixel of a pixel that is adjacent to sub-pixel 100a. Bank 105d separates organic light-emitting layer of sub-pixel 100c and organic light-emitting layer of a sub-pixel of a pixel that is adjacent to sub-pixel 100c. Bank 105b separates organic light-emitting layer of sub-pixel 100a and organic light-emitting layer of sub-pixel 100b. Bank 105c separates organic light-emitting layer of sub-pixel 100b and organic light-emitting layer of sub-pixel 100c. Inclination angle ?cb of sidewall 105cb of bank 105c located on the side of sub-pixel 100c is set to be larger than other inclination angles ?aa, ?ba, ?bb, ?cc and ?dc.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: December 9, 2014
    Assignee: Panasonic Corporation
    Inventor: Hideaki Matsushima
  • Patent number: 8901549
    Abstract: The present invention provides an organic light emitting diode touch display panel including a substrate, a plurality of first electrodes and a plurality of second electrodes disposed on the substrate, a plurality of light emitting layers, a plurality of dielectric layers, a plurality of first electrode stripes, and a plurality of second stripes. Each light emitting layer is disposed on each first electrode, and each dielectric layer is disposed on each second electrode. Each first electrode stripe is disposed on the light emitting layers in each row, and each second electrode stripe is disposed on the dielectric layers in each row. Each first electrode, each light emitting layer and each first electrode stripe form an organic light emitting diode, and each second electrode, each dielectric layer and each second electrode stripe form a touch sensing capacitor.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: December 2, 2014
    Assignee: HannStar Display Corp.
    Inventors: Chien-Hsiang Huang, Kun-Hua Tsai, Jun-Shih Chung, Chun-Hsi Chen
  • Patent number: 8895969
    Abstract: A white organic light emitting device, with improved color shift characteristics and improved efficiency according to viewing angle changes by controlling conditions for designing an optical path in organic material layers between a cathode and an anode or adjusting interior or exterior thicknesses of the organic material layers, has a structure including a first electrode and layers between the first electrode and a second electrode satisfies an optical path condition represented by the following equation n a ? d a ? + ? j ? ? n j w ? d j w ? = 1.85 ? 2.15 with respect to emissions of the first and second stacks, where ? is an emission peak wavelength of the first stack or the second stack, na and da are a refractive index and a thickness of a transparent electrode selected from the first and second electrode, and nw and dw are a refractive index and a thickness of any one of the layers disposed between the first electrode and the second electrode, respectively.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: November 25, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Hwa-Kyung Kim, Sung-Hoon Pieh, Jae-II Song, Sung-Jae Ko
  • Patent number: 8890135
    Abstract: Provided is an organic light emitting display device, including a substrate, an insulating layer on the substrate, and a display element layer on the insulating layer, in which the insulating layer includes one or more low refractive layers and one or more high refractive layers.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: November 18, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gee-Bum Kim, Jae-Ik Lim, Won-Sang Park, Min-Woo Kim
  • Patent number: 8884316
    Abstract: A first method comprises providing a plurality of organic light emitting devices (OLEDs) on a first substrate. Each of the OLEDs includes a transmissive top electrode. The plurality of OLEDs includes a first portion of OLEDs and a second portion of OLEDs that is different from the first portion. The first method further includes depositing a first capping layer over at least the first portion of the plurality of OLEDs such that the first capping layer is optically coupled to at least the first portion of the plurality of OLEDs. A second capping layer is deposited over at least the second portion of the plurality of OLEDs such that the second capping layer is optically coupled to the second portion of the plurality of OLEDs but not the first portion of the plurality of OLEDs.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: November 11, 2014
    Assignee: Universal Display Corporation
    Inventors: Michael S. Weaver, Michael Hack
  • Patent number: 8878164
    Abstract: The invention relates to an organic light-emitting diode, known under the abbreviation OLED, and to a method for the production of such an organic light-emitting diode. According to the invention, an OLED or organic light-emitting diode having an emitter layer (5) is produced, said emitter layer emitting white light in particular. The emitter layer (5) is arranged within a lossy, optical resonator. The optical path length between the two reflecting layers of the resonator determines the color of the light emitting from the optical resonator and, consequently, from the light-emitting diode. In order to be able to create a variety of colors, there must be different optical path lengths between the two reflecting surfaces. The correspondingly different distances can be produced in only one work step, in contrast to the prior art, by a photolithographic method.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: November 4, 2014
    Assignee: Universitaet zu Koeln
    Inventors: Malte Gather, Klaus Meerholz
  • Patent number: 8878171
    Abstract: An organic light emitting display device includes first and second electrodes facing each other on a substrate, a first stack including a first hole transport layer, a second hole transport layer, a first emitting layer, and a first electron transport layer, the layers being sequentially stacked on the first electrode, a second stack including a third hole transport layer, a fourth hole transport layer, a second emitting layer including at least two hosts and a single dopant and having at least three emitting areas, and a second electron transport layer, the layers being sequentially stacked between the first stack and the second electrode, wherein the second emitting layer includes a first emitting area including a material of the fourth hole transport layer, a second emitting area including a material of the second electron transport layer, and a third emitting area including the at least two hosts.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: November 4, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Jeong-Haeng Heo, Jae-Man Lee, Gwi-Jeong Cho, So-Yeon Ahn
  • Patent number: 8871545
    Abstract: A method is provided for forming a multi-color OLED device that includes providing a substrate, coating the substrate with a fluorinated photoresist solution to form a first photo-patternable layer and exposing it to produce a first pattern of exposed fluorinated photoresist material and a second pattern of unexposed fluorinated photoresist material, developing the photo-patternable layer with a fluorinated solvent to remove the second pattern of unexposed fluorinated photoresist material without removing the first pattern of exposed fluorinated photoresist material, depositing a first organic light-emitting material over the substrate to form a first organic light-emitting layer for emitting a first color of light and applying the first pattern of exposed fluorinated photoresist material to control the removal of a portion of the first organic light-emitting layer.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: October 28, 2014
    Assignees: Orthogonal, Inc., Cornell University
    Inventors: Jin-Kyun Lee, Alexander Zakhidov, John DeFranco
  • Patent number: 8866133
    Abstract: A display device includes, on a substrate, light emitting elements each formed by sequentially stacking a first electrode layer, an organic layer including a light emission layer, and a second electrode layer and arranged in first and second directions which cross each other, a drive circuit including drive elements that drive light emitting elements, and a wiring extending in the first direction, and an insulating layer disposed in a gap region sandwiched by the light emitting elements neighboring in the second direction and having a recess or a projection. The wiring is disposed in an overlap region overlapping with the recess or the projection in the insulating layer in a thickness direction, in the gap region, and the second electrode layers in the light emitting elements neighboring in the second direction are separated from each other by the recess or the projection in the insulating layer.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: October 21, 2014
    Assignee: Sony Corporation
    Inventor: Hiroshi Sagawa
  • Patent number: 8865486
    Abstract: The present application relates to a method for fabricating an organic light emitting display device, comprising: forming a drive thin film transistor on a substrate at a non-light emission region; forming a protective layer on the substrate; forming a color filter on the protective layer; forming a planarizing layer on a protective layer including the color filter; selectively removing the protective layer and the light compensating layer to form a first drain contact hole which exposes a drain electrode of the drive thin film transistor; forming a light compensating layer on the planarizing layer to have a second drain contact hole which exposes the first contact hole, and a dummy hole to expose the planarizing layer; and forming an organic light emitting element on the light compensating layer to be in contact with the drain electrode through the first and second drain contact holes.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: October 21, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Jun-Jung Kim, Hee-Suk Pang
  • Patent number: 8860050
    Abstract: Provided is a hybrid light emitting device. The hybrid light emitting device may include the first light emitting part on the substrate, the capping layer, and the second light emitting part. The first light emitting part may emit light having a first wavelength, and the first light emitting part may include a first electrode, an organic emitting layer, and a second electrode sequentially disposed. A second light emitting part may generate light having a second wavelength. A capping layer may be disposed between the organic emitting layer and the second light emitting part. The capping layer may reflect light having the first wavelength and transmit light having the second wavelength.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: October 14, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jun-Han Han, Jeong Ik Lee, Chul Woong Joo, Jin Woo Huh, Jaehyun Moon, Seung Koo Park, Joon Tae Ahn, Boong Joon Lee, Nam Sung Cho, Doo-Hee Cho, Joo Hyun Hwang, Jin Wook Shin, Hye Yong Chu
  • Patent number: 8853678
    Abstract: An organic EL element includes a substrate 20, a lower electrode 21, an upper electrode 26, and an organic layer 22. The organic layer 22 is provided between the upper and lower electrodes 21, 26. The upper and lower electrodes 21, 26 and the organic layer 22 are stacked on the substrate 20. A hole injection layer 23 and a light emitting layer 24 in the organic layer 22 are formed by using an electrospray method, and have a film-like structure in which fine particles are continuously bonded together.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: October 7, 2014
    Assignees: Sharp Kabushiki Kaisha, Fuence Co., Ltd.
    Inventors: Hideki Uchida, Emi Yamamoto, Kazuya Nitta, Yasumasa Nakamura
  • Patent number: 8847210
    Abstract: An organic light emitting diode (OLED) display includes: a substrate; a first electrode on the substrate; a first emission layer on the first electrode; a second emission layer on the first emission layer; a second electrode on the second emission layer; and a light emitting assistance layer selectively positioned between the first emission layer and the second emission layer.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: September 30, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee-Joo Ko, Se-Jin Cho, Chang-Ho Lee, Il-Soo Oh, Hyung-Jun Song, Jin-Young Yun, Bo-Ra Lee, Young-Woo Song, Jong-Hyuk Lee, Sung-Chul Kim
  • Patent number: 8841670
    Abstract: An organic light emitting display apparatus includes a substrate; a thin film transistor which is disposed over the substrate; a first electrode which is disposed over the substrate and electrically connected to the thin film transistor; a passivation layer which covers the thin film transistor and contacts a predetermined region of an upper surface of the first electrode; an intermediate layer which is disposed over the first electrode, includes an organic emission layer, and contacts a predetermined region of the passivation layer; and a second electrode which is disposed over the intermediate layer.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: September 23, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seong-Hyun Jin, Seong-Ho Kim
  • Patent number: 8841672
    Abstract: A display unit with which lowering of long-term reliability of a transistor is decreased is provided. The display unit includes a display section having a plurality of organic EL devices with light emitting color different from each other and a plurality of pixel circuits that are singly provided for every said organic EL device for every pixel. The pixel circuit has a first transistor for writing a video signal, a second transistor for driving the organic EL device based on the video signal written by the first transistor, and a retentive capacity, and out of the first transistor and the second transistor, a third transistor provided correspondingly to a second organic EL device adjacent to a first organic EL device is arranged farther from the first organic EL device than a first retentive capacity provided correspondingly to the second organic EL device out of the retentive capacity.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: September 23, 2014
    Assignee: Sony Corporation
    Inventors: Takayuki Taneda, Tetsuro Yamamoto, Katsuhide Uchino
  • Patent number: 8841666
    Abstract: In an aspect, a display device including: a substrate; a thin film transistor formed on the substrate, and comprising an active layer formed of an oxide semiconductor; a passivation layer formed on the thin film transistor; and a hydrogen blocking layer positioned between the active layer and the passivation layer is provided.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: September 23, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeong-Hwan Kim, Kyung-Hye Kim, Joo-Sun Yoon